CN109205992A - Biological sludge heating and pyrohydrolysis system and technique - Google Patents
Biological sludge heating and pyrohydrolysis system and technique Download PDFInfo
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- CN109205992A CN109205992A CN201811268027.3A CN201811268027A CN109205992A CN 109205992 A CN109205992 A CN 109205992A CN 201811268027 A CN201811268027 A CN 201811268027A CN 109205992 A CN109205992 A CN 109205992A
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- 239000010802 sludge Substances 0.000 title claims abstract description 327
- 238000010438 heat treatment Methods 0.000 title claims abstract description 142
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 73
- 238000003860 storage Methods 0.000 claims abstract description 54
- 230000029087 digestion Effects 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 15
- 238000009283 thermal hydrolysis Methods 0.000 claims abstract 41
- 239000007788 liquid Substances 0.000 claims description 31
- 239000012141 concentrate Substances 0.000 claims description 26
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 20
- 238000009792 diffusion process Methods 0.000 claims description 19
- 230000007062 hydrolysis Effects 0.000 claims description 14
- 238000006460 hydrolysis reaction Methods 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000003895 organic fertilizer Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 59
- 238000012546 transfer Methods 0.000 abstract description 53
- 238000012545 processing Methods 0.000 abstract description 25
- 230000008901 benefit Effects 0.000 abstract description 12
- 230000000593 degrading effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000026676 system process Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 49
- 239000000126 substance Substances 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000010586 diagram Methods 0.000 description 11
- 238000010025 steaming Methods 0.000 description 10
- 230000015556 catabolic process Effects 0.000 description 8
- 238000006731 degradation reaction Methods 0.000 description 8
- 238000007701 flash-distillation Methods 0.000 description 8
- 150000003384 small molecules Chemical class 0.000 description 8
- 244000005700 microbiome Species 0.000 description 7
- 239000007921 spray Substances 0.000 description 7
- 150000007524 organic acids Chemical class 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000003416 augmentation Effects 0.000 description 4
- 239000005446 dissolved organic matter Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 150000002894 organic compounds Chemical class 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 235000013399 edible fruits Nutrition 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000004093 laser heating Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229920002521 macromolecule Polymers 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000002525 ultrasonication Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
本发明公开了一种生物污泥加热与热水解系统及工艺，该系统包括依次用管道首尾连通的物料预热器、物料输送泵、一级蒸汽喷射器、物料储存器、进料泵、热水解反应器、出料泵、蒸汽闪蒸器和泄压阀，以及用于对热水解反应器中生物污泥进行加热的二级蒸汽喷射器。该工艺采用上述系统进行加热和热水解。本发明生物污泥加热与热水解系统具有传热效果好、物料受热均匀性好、蒸汽消耗量小、加热时间短、连续操作稳定性好等优点，能够广泛用于降解生物污泥，有着很好的应用价值和应用前景。本发明生物污泥加热与热水解系统工艺具有工艺简单、操作方便、处理成本低、处理效率高、处理效果好等优点，有利于提高生物污泥的利用率以及扩大厌氧消化的应用范围。
The invention discloses a biological sludge heating and thermal hydrolysis system and process. The system comprises a material preheater, a material conveying pump, a first-stage steam ejector, a material storage, a feeding pump, Thermal hydrolysis reactor, discharge pump, steam flasher and pressure relief valve, and secondary steam ejector for heating biological sludge in the thermal hydrolysis reactor. The process uses the system described above for heating and thermal hydrolysis. The biological sludge heating and thermal hydrolysis system of the invention has the advantages of good heat transfer effect, good heating uniformity of materials, small steam consumption, short heating time, good continuous operation stability, etc., and can be widely used for degrading biological sludge. Very good application value and application prospects. The biological sludge heating and thermal hydrolysis system process of the invention has the advantages of simple process, convenient operation, low processing cost, high processing efficiency, good processing effect, etc., and is beneficial to improve the utilization rate of biological sludge and expand the application range of anaerobic digestion .
Description
Technical field
The invention belongs to biological sludge recycling treatment field, it is related to a kind of biological sludge heating and pyrohydrolysis system and work
Skill.
Background technique
With the continuous development of society and economy the yield of the biological sludges such as biogas residue, activated sludge is increasing.Currently,
The pretreated research hotspot of biological sludge include high-temperature-hot-water solution, biological acidification hydrolysis, high temperature and pressure oxidation, ultrasonication,
High temperature homogeneous, ozone chemistry processing etc., wherein the characteristics of high-temperature-hot-water solution technology is that biological sludge is warmed to 150-180 DEG C,
To achieve the purpose that destroy flocculation structure, destroy cell wall tissue and degradation part macromolecular substances.Due to high-temperature-hot-water solution energy
Solid particle and macromolecular substances difficult to degrade be in enough bio-sludge degradings to increase the content of organic acid and dissolved organic matter,
In this, as the preposition preprocessing process of anaerobic digestion, is conducive to the gas production for increasing anaerobic digestion and reduces the production for consuming biogas residue
Output, thus high-temperature-hot-water solution technology is used for the preposition pretreatment of anaerobic digestion.
Existing sludge hot hydrolysis system mainly includes intermittent pyrohydrolysis system (such as CAMBI (health is green) product), continuous vertical
Formula baffle plate pyrohydrolysis system (such as Veolia Exelys product) and hot oil tubular heating system (such as Ovivo water
LysoTherm product), wherein the most extensive as the intermittent pyrohydrolysis systematic difference of representative using CAMBI.With CAMBI product
For, intermittent pyrohydrolysis system includes preheating pulp tank, hot water solution reaction kettle and pressure release flash tank, and main flow includes will
Dry solid content is pumped into preheating pulp tank for the dewatered sludge of 16-18% and is preheated to 90-100 DEG C, and it is anti-to be then pumped into pyrohydrolysis
It answers kettle to be heated to 165 DEG C, and reacts at this temperature 20-30 minutes, sludge is sent into the cooling of pressure release flash tank after the reaction was completed
To 100 DEG C, temperature needed for continuing cool to anaerobic digestion later.But intermittent pyrohydrolysis system and technique there are still with
Lower shortcoming: it is passed through steam preheating in the preheating pulp tank of big volume, since dewatered sludge dry solid is at concentrations up to 16-
18%, being heated evenly property of sludge is poor in heating process, and heat transfer efficiency is low, so as to cause heating the time required to long, steam consumption
Amount is big；The pyrohydrolysis process of CAMBI product needs to realize continuous operation using multiple hot water solution reaction kettles, exist program-controlled
The problems such as system is complicated, equipment input cost is high.Using Veolia Exelys product as the vertical continuous baffle plate pyrohydrolysis system of representative
System mainly by installing baffle plate in Vertical Heat hydrolysis reactor, and promotes effect by steam and realizes sludge in pyrohydrolysis
Reactor internal circulation flow, to reach the required reaction time (about 20min), due to the mobility of high solids content sludge and mixed
Conjunction property is all poor, causes the technology when handling high solids content sludge, heat transfer efficiency is low, heating uniformity is poor, steam consumption
Amount is high, continuous operation stability is poor.If reducing sewage sludge solid concentration, mud handling capacity and processing energy consumption can be obviously increased, is led
Cause processing cost higher.Hot oil tubular heating system (such as Ovivo water LysoTherm product) is using oily heat pipe-type heating
Device heats sludge, as the viscosity of high solids content sludge is big and poor fluidity and leads to lower heat transfer efficiency, thus
Increase the manufacture and operating cost of equipment.It can be seen that equipment employed in existing high-temperature-hot-water solution technology is in processing Gao Gu
Generally existing following problems when body content sludge: heat-transfer effect is poor, material uneven heating is even, steam consumption is big, heating time is long,
It is poor to operate continuously stability, and thus leads to equipment input cost height, processing cost height, poor processing effect.In addition,
The biological sludges such as activated sludge are pre-processed using existing high-temperature-hot-water solution equipment and technique in actual application, then
High-temperature-hot-water solution treated product is subjected to anaerobic digestion, whole gas production can not be significantly improved, this is primarily due to existing
There are pyrohydrolysis equipment and technique to be difficult to the hardly degraded organic substance in the biological sludges such as hydrolysing activity sludge, and these are difficult to degrade organic
Object is difficult to effectively degrade in existing anaerobic digestion process, so as to cause the reduction of anaerobic digestion rate, imitates the degradation of anaerobic digestion
Fruit and whole gas production are bad.The presence of the above problem limits the application effect and application range of anaerobic digestion techniques, very
Be unfavorable for biological sludge be effectively treated and recycling recycle, the due value of biological sludge can not be played.Therefore, such as
What, which is effectively improved the above problem, obtains that a kind of heat-transfer effect is good, being heated evenly property of material is good, steam consumption is small, heating time
Short, the continuous operation good pyrohydrolysis device of stability and the pyrohydrolysis method that matches for improve the utilization rate of biological sludge with
And the application range of expansion anaerobic digestion is of great significance.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, provide a kind of heat-transfer effect is good, material by
Biological sludge heating and the pyrohydrolysis system that thermal uniformity is good, steam consumption is small, heating time is short, continuous operation stability is good
And technique.
In order to solve the above technical problems, the present invention uses following technical scheme.
A kind of heating of biological sludge and pyrohydrolysis system, the biological sludge heating and pyrohydrolysis system include successively with managing
The material preheater of road head and the tail connection, material-handling pump, level-one steam jet ejector, material storage storage, feed pump, pyrohydrolysis reaction
Device, discharging pump, steam flash vessel and relief valve；The biological sludge heating further includes for anti-to pyrohydrolysis with pyrohydrolysis system
Answer the second steam injector that biological sludge is heated in device.
Above-mentioned biological sludge heating and pyrohydrolysis system, further improved, the second steam injector includes outer
Set steam pipeline and the external steam injection pipe of at least one, one end of the external steam injection pipe and external steam pipeline
Connection, the other end are connected to pyrohydrolysis reactor；The pyrohydrolysis reactor is in horizontally disposed cylindrical structure, the pyrohydrolysis
Spiral deflector, oblique deflector, vertical deflector or partition board are equipped in reactor.
Above-mentioned biological sludge heating and pyrohydrolysis system, further improved, the second steam injector includes interior
Steam pipeline is set, one end of the built-in steam pipeline is installed in the side of pyrohydrolysis reactor, and the other end extend into heat
The inside of hydrolysis reactor；The built-in steam pipeline is equipped with steam jetting hole.
Above-mentioned biological sludge heating and pyrohydrolysis system, further improved, the built-in steam pipeline rotary type
It is installed in the side of pyrohydrolysis reactor；The built-in steam pipeline and pyrohydrolysis reactor are externally connected to for rotating
The power mechanism of built-in steam pipeline；The power mechanism includes motor and driving wheel group, and the motor passes through driving wheel group
Drive built-in steam pipeline rotation.
Above-mentioned biological sludge heating and pyrohydrolysis system, it is further improved, it is connected on the built-in steam pipeline
There is at least one steam diffuser；The side wall of the steam diffuser is equipped with steam diffusion hole.
Above-mentioned biological sludge heating and pyrohydrolysis system, further improved, the built-in steam pipeline is equipped with
Helical feed plate.
Above-mentioned biological sludge heating and pyrohydrolysis system, further improved, the built-in fixed dress of steam pipeline
Set on the side of pyrohydrolysis reactor；The pyrohydrolysis reactor is in horizontally disposed cylindrical structure, the pyrohydrolysis reactor
Interior to be equipped at least one piece of partition board, the partition board is located at the top of built-in steam pipeline.
Above-mentioned biological sludge heating and pyrohydrolysis system, further improved, the built-in fixed dress of steam pipeline
Set on the side of pyrohydrolysis reactor, at least one steam diffuser, the steam are communicated on the built-in steam pipeline
The side wall of diffuser is equipped with steam diffusion hole.
Above-mentioned biological sludge heating and pyrohydrolysis system, further improved, the built-in fixed dress of steam pipeline
Set on the side of pyrohydrolysis reactor, the built-in steam pipeline is equipped with helical feed plate.
As a general technical idea, described the present invention also provides a kind of heating of biological sludge and pyrohydrolysis technique
Biological sludge heating carries out heating and pyrohydrolysis, packet with pyrohydrolysis system using above-mentioned biological sludge heating with pyrohydrolysis technique
Include following steps:
S1, the biological sludge in material preheater is preheated；
S2, the biological sludge after preheating in step S1 is continuously conveyed to level-one steam jet ejector using material-handling pump
In, level-one heating is carried out to biological sludge using high steam, gained biological sludge is stored in material storage storage；
S3, biological sludge in material storage storage is continuously conveyed into pyrohydrolysis reactor using feed pump, is utilized simultaneously
High steam is continuously conveyed into pyrohydrolysis reactor and carries out second level heating to biological sludge by second steam injector, and heat occurs
Hydrolysis；
S4, the feed liquid in step S3 after pyrohydrolysis is continuously conveyed into steam flash vessel using discharging pump, is led to simultaneously
It crosses control relief valve to flash the feed liquid in steam flash vessel, obtains low-pressure steam and pyrohydrolysis concentrate, gained low pressure
Steam is back in step S1 for preheating to the biological sludge in material preheater, is discharged into outside gained pyrohydrolysis concentrate
Row subsequent processing completes the processing to biological sludge.
Above-mentioned biological sludge heating and pyrohydrolysis technique, it is further improved, in the step S1, the biological sludge
For biogas residue and/or activated sludge.
Above-mentioned biological sludge heating and pyrohydrolysis technique, further improved, in the step S4, the pyrohydrolysis is dense
The subsequent processing of contracting liquid uses any one following mode；
Mode one: being cooled to 35 DEG C~55 DEG C for pyrohydrolysis concentrate, and progress level-one is sent into level-one anaerobic digester to detest
Oxygen digestion；
Mode two: being cooled to 35 DEG C~55 DEG C for pyrohydrolysis concentrate, and progress second level is sent into secondary anaerobic digester to detest
Oxygen digestion；
Mode three: pyrohydrolysis concentrate is separated by solid-liquid separation, and obtained solid is used as organic fertilizer after being dehydrated, being dried,
Gained liquid is sent as the raw material for producing biogas to level-one anaerobic digester or secondary anaerobic digester.
Compared with the prior art, the advantages of the present invention are as follows:
(1) the present invention provides a kind of heating of biological sludge and pyrohydrolysis system, including successively with pipeline head and the tail connection
Material preheater, material-handling pump, level-one steam jet ejector, material storage storage, feed pump, pyrohydrolysis reactor, discharging pump, steaming
Vapour flash vessel and relief valve, and the second steam injector for being heated to biological sludge in pyrohydrolysis reactor.This
In invention, biological sludge heating is equipped with level-one steam jet ejector with pyrohydrolysis system, is steamed high pressure using level-one steam jet ejector
Vapour is sufficiently mixed with biological sludge, carries out level-one heating to biological sludge using the heat of high steam, being capable of augmentation of heat transfer effect
Fruit enables biological sludge to be heated rapidly to 100 DEG C or so, can reduce steam consumption, advantageously reduces processing cost, and will
High steam and biological sludge are mixed, and mixed effect can be strengthened, i.e. level-one steam jet ejector can be obviously improved biology
Mixing efficiency and heat transfer efficiency between sludge and steam reduce heating time and steam consumption.Biological sludge heating and heat
Hydrolysis system is equipped with material storage storage, for storing the biological sludge after the heating of level-one steam jet ejector, and the material storing
Device occupied area is smaller.On this basis, biological sludge heating is additionally provided with pyrohydrolysis system for pyrohydrolysis reactor
Middle biological sludge carries out the second steam injector of second level heating, specially utilizes second steam injector to pyrohydrolysis reactor
In be continuously conveyed high steam to biological sludge carry out second level heating, not only can use high steam heat reinforce to biology
The heating effect of sludge makes the heat-transfer effect of biological sludge more preferably, so that biological sludge be enable to be rapidly achieved needed for pyrohydrolysis
Temperature makes the biological sludge abundant pyrohydrolysis, and the high pressure steaming sprayed into using high speed within a short period of time in pyrohydrolysis reactor
Vapour also can enhanced biological sludge mixed effect, reduction is stirred required energy, is conducive to enhance heated equal of biological sludge
Even property, to enhance pyrohydrolysis effect, while the high steam that high speed sprays into can also promote biological sludge in pyrohydrolysis reactor
Flowing, and the especially refractory organic compounds of the organic substance in biological sludge are efficiently finally hydrolyzed into organic acid and molten
The small-molecule substance that solution property organic matter etc. can be efficiently used by microorganism, reaching improves pyrohydrolysis effect, reduces processing cost
The purpose of.In addition, biological sludge heating is equipped with feed pump and discharging pump with pyrohydrolysis system, by feed pump and discharging pump
It is controlled, can effectively control the input quantity and output quantity of biological sludge in pyrohydrolysis reactor, be conducive to improve continuous add
Heat, the stability of pyrohydrolysis and flash distillation, and be conducive to improve treatment effeciency.Biological sludge heating of the present invention has with pyrohydrolysis system
Have the advantages that heat-transfer effect is good, being heated evenly property of material is good, steam consumption is small, heating time is short, continuous operation stability is good,
It can be widely applied for bio-sludge degrading (such as biogas residue, activated sludge), and can be realized effective degradation to biological sludge, have
Application value and application prospect well.
(2) the present invention also provides a kind of heating of biological sludge and pyrohydrolysis technique, dirty using the biology of aforementioned present invention
Mud heating carries out heating and pyrohydrolysis with pyrohydrolysis system, and intermittent operation and continous way operation can be realized, have technique
It is simple and convenient to operate, the advantages that processing cost is low, treatment effeciency is high, high treating effect, is conducive to the utilization for improving biological sludge
Rate and the application range for expanding anaerobic digestion.
Detailed description of the invention
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described.
Fig. 1 is the structural schematic diagram of biological sludge heating and pyrohydrolysis system in the embodiment of the present invention 1.
Fig. 2 is the structural schematic diagram of biological sludge heating and pyrohydrolysis system in the embodiment of the present invention 2.
Fig. 3 is the structural schematic diagram of pyrohydrolysis reactor in the embodiment of the present invention 2.
Fig. 4 is the structural schematic diagram of biological sludge heating and pyrohydrolysis system in the embodiment of the present invention 3.
Fig. 5 is the structural schematic diagram of pyrohydrolysis reactor in the embodiment of the present invention 3.
Fig. 6 is the structural schematic diagram of biological sludge heating and pyrohydrolysis system in the embodiment of the present invention 4.
Fig. 7 is the structural schematic diagram of biological sludge heating and pyrohydrolysis system in the embodiment of the present invention 5.
Fig. 8 is the structural schematic diagram of biological sludge heating and pyrohydrolysis system in the embodiment of the present invention 6.
Fig. 9 is the structural schematic diagram of biological sludge heating and pyrohydrolysis system in the embodiment of the present invention 7.
Figure 10 is the structural schematic diagram of biological sludge heating and pyrohydrolysis system in the embodiment of the present invention 8.
Figure 11 is the structural schematic diagram of biological sludge heating and pyrohydrolysis system in the embodiment of the present invention 9.
Marginal data:
1, material preheater；2, material-handling pump；3, level-one steam jet ejector；4, material storage storage；5, feed pump；6, hot
Hydrolysis reactor；61, spiral deflector；62, oblique deflector；63, vertical deflector；64, partition board；65, material inlet；
66, material outlet；7, second steam injector；71, external steam pipeline；72, external steam injection pipe；73, built-in steam
Delivery pipe；74, steam jetting hole；75, power mechanism；751, motor；752, driving wheel group；753, bearing；76, steam is spread
Pipe；77, steam diffusion hole；78, helical feed plate；8, discharging pump；9, steam flash vessel；10, relief valve；A, high steam；b,
Biological sludge, c, pyrohydrolysis concentrate.
Specific embodiment
Below in conjunction with Figure of description and specific preferred embodiment, the invention will be further described, but not therefore and
It limits the scope of the invention.
Embodiment 1
A kind of heating of biological sludge and pyrohydrolysis system, as shown in Figure 1, including that material successively with pipeline head and the tail connection is pre-
Hot device 1, material-handling pump 2, level-one steam jet ejector 3, material storage storage 4, feed pump 5, pyrohydrolysis reactor 6, discharging pump 8,
Steam flash vessel 9 and relief valve 10, and further include the second level steaming for being heated to biological sludge in pyrohydrolysis reactor 6
Vapour injector 7.
In the present embodiment, second steam injector 7 includes external steam pipeline 71 and the external steam injection of at least one
Pipe 72, one end of external steam injection pipe 72 are connected to external steam pipeline 71, and the other end is connected to pyrohydrolysis reactor 6.
In the present embodiment, pyrohydrolysis reactor 6 is in horizontally disposed cylindrical structure, and biological sludge passes through feed pump 5 from heat
The material inlet 65 of hydrolysis reactor 6 enters in pyrohydrolysis reactor 6, passes through after the completion of pyrohydrolysis from the discharging of material outlet 66
Discharging pump 8 is delivered in steam flash vessel 9.
In the present embodiment, by control feed pump 5 and discharging pump 8, so that it is dirty effectively to control biology in pyrohydrolysis reactor 6
The input quantity and output quantity of mud, while biological sludge can be driven to exist by the high steam sprayed in external steam injection pipe 72
Transfer in pyrohydrolysis reactor 6.
In the present embodiment, a is high steam, and b is biological sludge, and c is pyrohydrolysis concentrate.
In the present embodiment, biological sludge is preheated in material preheater 1, and will be preheated by material-handling pump 2
Biological sludge afterwards is continuously conveyed into level-one steam jet ejector 3.In 3 mesohigh steam of level-one steam jet ejector and biological sludge
It is sufficiently mixed, and level-one heating is carried out to biological sludge using the heat of high steam in mixed process, after gained heating
Biological sludge is stored in material storage storage 4.The biological sludge in material storage storage 4 is continuously conveyed to heat using feed pump 5
In hydrolysis reactor 6, while high steam is continuously sprayed into pyrohydrolysis reactor 6 by second steam injector 7, utilizes height
It presses the heat of steam to carry out second level heating to biological sludge, so that biological sludge is faster reached pyrohydrolysis required temperature, and high speed is sprayed
The high steam entered also can be such that the biological sludge in pyrohydrolysis reactor 6 is vigorously stirred, so that biological sludge be enable to exist
Pyrohydrolysis required temperature is sufficiently mixed and is rapidly achieved in short period, and final biological sludge is completed in pyrohydrolysis reactor 6
Pyrohydrolysis.The residence time of pressure and biological sludge in pyrohydrolysis reactor 6 is controlled by discharging pump 8.After the completion of pyrohydrolysis,
The feed liquid after pyrohydrolysis is continuously conveyed into steam flash vessel 9 by discharging pump 8, and steam is dodged by control relief valve 10
Feed liquid in steaming pot 9 is flashed, and the gas-liquid in feed liquid is efficiently separated, wherein flash distillation gained low-pressure steam passes through relief valve 10
It is continuously conveyed into material preheater 1 for being preheated to biological sludge, gained pyrohydrolysis concentrate is from 9 bottom of steam flash vessel
Portion's discharge, is handled by corresponding subsequent treatment process, to realize the continuous processing to biological sludge.
In the present embodiment, biological sludge heating is equipped with level-one steam jet ejector 3 with pyrohydrolysis system, using level-one steam
High steam and biological sludge are sufficiently mixed by injector 3, carry out level-one heating to biological sludge using the heat of high steam,
Can augmentation of heat transfer effect, so that biological sludge is heated rapidly to 100 DEG C or so, steam consumption can be reduced, be conducive to drop
Reduction process cost, and high steam and biological sludge are mixed, mixed effect, i.e. level-one steam jet ejector 3 can be strengthened
The mixing efficiency and heat transfer efficiency that can be obviously improved between biological sludge and steam reduce heating time and steam consumption.It should
Biological sludge heating is equipped with material storage storage 4 with pyrohydrolysis system, for storing the biology after the heating of level-one steam jet ejector 3
Sludge, and 4 occupied area of material storage storage is smaller.On this basis, biological sludge heating is additionally provided with pyrohydrolysis system
Second steam injector 7 for being heated to biological sludge in pyrohydrolysis reactor 6 is specially sprayed using second steam
High steam is continuously conveyed into pyrohydrolysis reactor 6 and carries out second level heating to biological sludge for device 7, wherein second steam injector
7 include external steam pipeline 71 and the external steam injection pipe 72 of at least one, passes through external steam pipeline 71 and at least one
High steam high speed is injected in pyrohydrolysis reactor 6 by the external steam injection pipe 72 of root, not only can use high steam
Heat reinforces making the heating effect of biological sludge the heat-transfer effect of biological sludge more preferably, to keep biological sludge quick
Reach pyrohydrolysis required temperature, promotes the biological sludge abundant pyrohydrolysis, and utilization within a short period of time in pyrohydrolysis reactor 6
High speed spray into high steam also can enhanced biological sludge mixed effect, reduction be stirred required energy, be conducive to enhance
The heated uniformity of biological sludge, to enhance pyrohydrolysis effect, while the high steam that high speed sprays into can also promote biological dirt
Mud pyrohydrolysis reactor 6 flowing, and it is finally that the especially refractory organic compounds of the organic substance in biological sludge are efficient
Ground is hydrolyzed into the small-molecule substance that organic acid and dissolved organic matter etc. can be efficiently used by microorganism, reaches improvement pyrohydrolysis
Effect reduces the purpose of processing cost.In addition, biological sludge heating is equipped with feed pump 5 and discharging pump 8 with pyrohydrolysis system,
By controlling feed pump 5 and discharging pump 8, can effectively control in pyrohydrolysis reactor 6 input quantity of biological sludge and
Output quantity is conducive to the stability for improving laser heating, pyrohydrolysis and flash distillation, and is conducive to improve treatment effeciency.The present invention is raw
The heating of object sludge is with pyrohydrolysis system with heat-transfer effect is good, being heated evenly property of material is good, steam consumption is small, heating time
It is short, continuous operation stability it is good the advantages that, can be widely applied for bio-sludge degrading (such as biogas residue, activated sludge), and can
It realizes effective degradation to biological sludge, there is good application value and application prospect.
Embodiment 2
A kind of heating of biological sludge and pyrohydrolysis system, as shown in Figures 2 and 3, including successively with the object of pipeline head and the tail connection
Expect preheater 1, material-handling pump 2, level-one steam jet ejector 3, material storage storage 4, feed pump 5, pyrohydrolysis reactor 6, discharging
Pump 8, steam flash vessel 9 and relief valve 10, and further include for being heated to biological sludge in pyrohydrolysis reactor 6 two
Grade steam jet ejector 7.
In the present embodiment, second steam injector 7 includes external steam pipeline 71 and the external steam injection of at least one
Pipe 72, one end of external steam injection pipe 72 are connected to external steam pipeline 71, and the other end is connected to pyrohydrolysis reactor 6.
In the present embodiment, pyrohydrolysis reactor 6 is in horizontally disposed cylindrical structure, is equipped with spiral in pyrohydrolysis reactor 6
Deflector 61.In the present embodiment, into the biological sludge in pyrohydrolysis reactor 6 by the guide function of spiral deflector 61,
Being heated evenly property of material is improved, and improves transmission effect of the biological sludge in pyrohydrolysis reactor 6, so as to improve life
The treatment effeciency of object sludge.
In the present embodiment, biological sludge enters pyrohydrolysis from the material inlet 65 of pyrohydrolysis reactor 6 by feed pump 5
In reactor 6, it is delivered in steam flash vessel 9 after the completion of pyrohydrolysis from the discharging of material outlet 66 by discharging pump 8.
In the present embodiment, by control feed pump 5 and discharging pump 8, so that it is dirty effectively to control biology in pyrohydrolysis reactor 6
The input quantity and output quantity of mud, while biological sludge can be driven to exist by the high steam sprayed in external steam injection pipe 72
Transfer in pyrohydrolysis reactor 6.
In the present embodiment, a is high steam, and b is biological sludge, and c is pyrohydrolysis concentrate.
Embodiment 3
A kind of heating of biological sludge and pyrohydrolysis system, as shown in Figures 4 and 5, including successively with the object of pipeline head and the tail connection
Expect preheater 1, material-handling pump 2, level-one steam jet ejector 3, material storage storage 4, feed pump 5, pyrohydrolysis reactor 6, discharging
Pump 8, steam flash vessel 9 and relief valve 10, and further include for being heated to biological sludge in pyrohydrolysis reactor 6 two
Grade steam jet ejector 7.
In the present embodiment, second steam injector 7 includes external steam pipeline 71 and the external steam injection of at least one
Pipe 72, one end of external steam injection pipe 72 are connected to external steam pipeline 71, and the other end is connected to pyrohydrolysis reactor 6.
In the present embodiment, pyrohydrolysis reactor 6 is in horizontally disposed cylindrical structure, is equipped in pyrohydrolysis reactor 6 oblique
Deflector 62.In the present embodiment, into the biological sludge in pyrohydrolysis reactor 6 by the guide function of oblique deflector 62,
It can be improved heat transfer efficiency of the biological sludge in pyrohydrolysis reactor 6, being heated evenly property of biological sludge improved, to improve life
The pyrohydrolysis efficiency of object sludge.
In the present embodiment, biological sludge enters pyrohydrolysis from the material inlet 65 of pyrohydrolysis reactor 6 by feed pump 5
In reactor 6, it is delivered in steam flash vessel 9 after the completion of pyrohydrolysis from the discharging of material outlet 66 by discharging pump 8.
In the present embodiment, by control feed pump 5 and discharging pump 8, so that it is dirty effectively to control biology in pyrohydrolysis reactor 6
The input quantity and output quantity of mud, while biological sludge can be driven to exist by the high steam sprayed in external steam injection pipe 72
Transfer in pyrohydrolysis reactor 6.
In the present embodiment, a is high steam, and b is biological sludge, and c is pyrohydrolysis concentrate.
Embodiment 4
A kind of heating of biological sludge and pyrohydrolysis system, as shown in fig. 6, including that material successively with pipeline head and the tail connection is pre-
Hot device 1, material-handling pump 2, level-one steam jet ejector 3, material storage storage 4, feed pump 5, pyrohydrolysis reactor 6, discharging pump 8,
Steam flash vessel 9 and relief valve 10, and further include the second level steaming for being heated to biological sludge in pyrohydrolysis reactor 6
Vapour injector 7.
In the present embodiment, second steam injector 7 includes external steam pipeline 71 and the external steam injection of at least one
Pipe 72, one end of external steam injection pipe 72 are connected to external steam pipeline 71, and the other end is connected to pyrohydrolysis reactor 6.
In the present embodiment, pyrohydrolysis reactor 6 is in horizontally disposed cylindrical structure, is equipped in pyrohydrolysis reactor 6 vertical
Deflector 63.In the present embodiment, into the biological sludge in pyrohydrolysis reactor 6 by the guiding function of oblique vertical deflector 63
Can, it can be improved heat transfer efficiency of the biological sludge in pyrohydrolysis reactor 6, being heated evenly property of biological sludge improved, to mention
The pyrohydrolysis efficiency of high biological sludge.
In the present embodiment, pyrohydrolysis reactor 6 is in horizontally disposed cylindrical structure.Biological sludge is entered by feed pump 5
Into pyrohydrolysis reactor 6, passes through discharging pump 8 after the completion of pyrohydrolysis and be delivered in steam flash vessel 9.
In the present embodiment, by control feed pump 5 and discharging pump 8, so that it is dirty effectively to control biology in pyrohydrolysis reactor 6
The input quantity and output quantity of mud, while biological sludge can be driven to exist by the high steam sprayed in external steam injection pipe 72
Transfer in pyrohydrolysis reactor 6.
In the present embodiment, a is high steam, and b is biological sludge, and c is pyrohydrolysis concentrate.
Embodiment 5
A kind of heating of biological sludge and pyrohydrolysis system, as shown in fig. 7, comprises the material successively with pipeline head and the tail connection is pre-
Hot device 1, material-handling pump 2, level-one steam jet ejector 3, material storage storage 4, feed pump 5, pyrohydrolysis reactor 6, discharging pump 8,
Steam flash vessel 9 and relief valve 10, and further include the second level steaming for being heated to biological sludge in pyrohydrolysis reactor 6
Vapour injector 7.
In the present embodiment, second steam injector 7 includes built-in steam pipeline 73, one end of built-in steam pipeline 73
It is installed in the side of pyrohydrolysis reactor 6, the other end extend into the inside of pyrohydrolysis reactor 6, on built-in steam pipeline 73
Equipped with steam jetting hole 74.
In the present embodiment, built-in steam pipeline 73 is fixed at the side of pyrohydrolysis reactor 6.Pyrohydrolysis reactor
6 be in horizontally disposed cylindrical structure, partition board 64 is equipped in pyrohydrolysis reactor 6, it is defeated that partition board 64 is located at built-in steam
The top of pipe 73 is sent, and the lower section between two pieces of partition boards 64 is equipped with steam jetting hole 74.It is more by being arranged in the present embodiment
Pyrohydrolysis reactor 6 is divided into several smaller spaces by a partition board 64, simultaneously because under between two pieces of partition boards 64
Side is equipped with steam jetting hole 74, it is thus possible to further increase the being heated evenly property of feed liquid and heat transfer speed in pyrohydrolysis reactor 6
Rate, so that feed liquid be made more rapidly and effectively to complete pyrohydrolysis reaction.
In the present embodiment, biological sludge is entered in pyrohydrolysis reactor 6 by feed pump 5, is passed through after the completion of pyrohydrolysis
Discharging pump 8 is delivered in steam flash vessel 9.
In the present embodiment, by control feed pump 5 and discharging pump 8, so that it is dirty effectively to control biology in pyrohydrolysis reactor 6
The input quantity and output quantity of mud, while biological sludge can be driven in hot water by the high steam sprayed in steam jetting hole 74
Solve the transfer in reactor 6.
In the present embodiment, a is high steam, and b is biological sludge, and c is pyrohydrolysis concentrate.
Embodiment 6
A kind of heating of biological sludge and pyrohydrolysis system, as shown in figure 8, including that material successively with pipeline head and the tail connection is pre-
Hot device 1, material-handling pump 2, level-one steam jet ejector 3, material storage storage 4, feed pump 5, pyrohydrolysis reactor 6, discharging pump 8,
Steam flash vessel 9 and relief valve 10, and further include the second level steaming for being heated to biological sludge in pyrohydrolysis reactor 6
Vapour injector 7.
In the present embodiment, second steam injector 7 includes built-in steam pipeline 73, one end of built-in steam pipeline 73
It is installed in the side of pyrohydrolysis reactor 6, the other end extend into the inside of pyrohydrolysis reactor 6, on built-in steam pipeline 73
Equipped with steam jetting hole 74.
In the present embodiment, built-in steam pipeline 73 is fixed at the side of pyrohydrolysis reactor 6.Built-in steam conveying
At least one steam diffuser 76 is communicated on pipe 73, the side wall of steam diffuser 76 is equipped with steam diffusion hole 77.This implementation
In example, built-in steam pipeline 73 is connected to 76 oblique 45 ° of steam diffuser, since pyrohydrolysis reactor 6 is in horizontally disposed
Cylindrical structure, steam diffuser 76 is distributed in biological sludge, is sprayed at this time by steam diffusion hole 77 into biological sludge
High steam is uniformly heated biological sludge to further enhance the heat-transfer effect of biological sludge, is uniformly distributed simultaneously
Steam diffusion hole 77 can be improved the mass transfer effect of biological sludge, so that the hardly degraded organic substance in biological sludge be made more to increase
It is hydrolyzed into the small-molecule substance that can be utilized by microorganism to effect.
In the present embodiment, pyrohydrolysis reactor 6 is in horizontally disposed cylindrical structure.Biological sludge is entered by feed pump 5
Into pyrohydrolysis reactor 6, passes through discharging pump 8 after the completion of pyrohydrolysis and be delivered in steam flash vessel 9.
In the present embodiment, by control feed pump 5 and discharging pump 8, so that it is dirty effectively to control biology in pyrohydrolysis reactor 6
The input quantity and output quantity of mud, while can be driven by the high steam sprayed in steam jetting hole 74 and steam diffusion hole 77
Transfer of the biological sludge in pyrohydrolysis reactor 6.
In the present embodiment, a is high steam, and b is biological sludge, and c is pyrohydrolysis concentrate.
Embodiment 7
A kind of heating of biological sludge and pyrohydrolysis system, as shown in figure 9, including that material successively with pipeline head and the tail connection is pre-
Hot device 1, material-handling pump 2, level-one steam jet ejector 3, material storage storage 4, feed pump 5, pyrohydrolysis reactor 6, discharging pump 8,
Steam flash vessel 9 and relief valve 10, and further include the second level steaming for being heated to biological sludge in pyrohydrolysis reactor 6
Vapour injector 7.
In the present embodiment, second steam injector 7 includes built-in steam pipeline 73, one end of built-in steam pipeline 73
It is installed in the side of pyrohydrolysis reactor 6, the other end extend into the inside of pyrohydrolysis reactor 6, on built-in steam pipeline 73
Equipped with steam jetting hole 74.
In the present embodiment, built-in steam pipeline 73 is fixed at the side of pyrohydrolysis reactor 6, built-in steam conveying
Pipe 73 is equipped with helical feed plate 78.In the present embodiment, by being equipped with helical feed plate 78, benefit on built-in steam pipeline 73
With the guiding role of helical feed plate 78, the being heated evenly property and heat transfer of feed liquid in pyrohydrolysis reactor 6 can be further improved
Rate, so that feed liquid be made more rapidly and effectively to complete pyrohydrolysis reaction.
In the present embodiment, pyrohydrolysis reactor 6 is in horizontally disposed cylindrical structure.Biological sludge is entered by feed pump 5
Into pyrohydrolysis reactor 6, passes through discharging pump 8 after the completion of pyrohydrolysis and be delivered in steam flash vessel 9.
In the present embodiment, by control feed pump 5 and discharging pump 8, to effectively control what pyrohydrolysis reactor 6 was imported and exported
Pressure difference drives helical feed plate 78 to rotate by pressure difference, and then biological sludge is pushed to turn in pyrohydrolysis reactor 6
It moves, while can also drive biological sludge in pyrohydrolysis reactor 6 by the high steam sprayed in steam jetting hole 74
Transfer.
In the present embodiment, a is high steam, and b is biological sludge, and c is pyrohydrolysis concentrate.
Embodiment 8
A kind of heating of biological sludge and pyrohydrolysis system, as shown in Figure 10, including successively with the material of pipeline head and the tail connection
Preheater 1, material-handling pump 2, level-one steam jet ejector 3, material storage storage 4, feed pump 5, pyrohydrolysis reactor 6, discharging pump
8, steam flash vessel 9 and relief valve 10, and further include the second level for being heated to biological sludge in pyrohydrolysis reactor 6
Steam jet ejector 7.
In the present embodiment, second steam injector 7 includes built-in steam pipeline 73, one end of built-in steam pipeline 73
It is installed in the side of pyrohydrolysis reactor 6, the other end extend into the inside of pyrohydrolysis reactor 6, on built-in steam pipeline 73
Equipped with steam jetting hole 74.
In the present embodiment, built-in 73 rotary type of steam pipeline is installed in the side of pyrohydrolysis reactor 6, and built-in steam is defeated
Send pipe 73 in the power mechanism 75 of pyrohydrolysis reactor 6 being externally connected to for rotating built-in steam pipeline 73, wherein moving
Force mechanisms 75 include that motor 751, driving wheel group 752 and the bearing 753 set on 6 end of pyrohydrolysis reactor, motor 751 pass through biography
Driving wheel group 752 is connected to built-in steam pipeline 73, drives built-in steam conveying in the support lower driving wheel group 752 of bearing 753
Pipe 73 rotates.In the present embodiment, built-in steam pipeline 73 can be in 6 inner rotation of pyrohydrolysis reactor, during rotation
High steam is constantly sprayed into using the steam jetting hole 74 being arranged on built-in steam pipeline 73, biological sludge is stirred
It mixes, the heat-transfer effect of biological sludge can not only be improved, can also improve the mass transfer effect of biological sludge, to enable biological sludge
It is enough more quickly to reach pyrohydrolysis temperature, and further promote pyrohydrolysis efficiency and pyrohydrolysis effect.
In the present embodiment, built-in steam pipeline 73 is communicated at least one steam diffuser 76, steam diffuser 76
Side wall is equipped with steam diffusion hole 77, and the angle between built-in steam pipeline 73 and steam diffuser 76 is 45 °, i.e., will be built-in
Steam pipeline 73 is connected to 76 oblique 45 ° of steam diffuser.In the present embodiment, since pyrohydrolysis reactor 6 is in horizontally disposed
Cylindrical structure, steam diffuser 76 is distributed in biological sludge, is sprayed at this time by steam diffusion hole 77 into biological sludge
High steam is uniformly heated biological sludge to further enhance the heat-transfer effect of biological sludge, is uniformly distributed simultaneously
Steam diffusion hole 77 can be improved the mass transfer effect of biological sludge, so that the hardly degraded organic substance in biological sludge be made more to increase
It is hydrolyzed into the small-molecule substance that can be utilized by microorganism to effect.Particularly, in the present embodiment, built-in steam pipeline 73 can be
6 inner rotation of pyrohydrolysis reactor is right using the steam diffuser 76 being arranged on built-in steam pipeline 73 during rotation
Biological sludge is stirred, and the steam jetting hole 74 and steaming by being arranged on built-in steam pipeline 73 during rotation
The steam diffusion hole 77 being arranged on vapour diffuser 76 constantly sprays into high steam, can not only improve the heat transfer effect of biological sludge
Fruit, can also improve the mass transfer effect of biological sludge, to enable biological sludge more quickly to reach pyrohydrolysis temperature, in turn
More efficiently the especially refractory organic compounds pyrohydrolysis of the organic substance in biological sludge is had at organic acid and dissolubility
The small-molecule substance that machine object etc. can be efficiently used by microorganism.
In the present embodiment, pyrohydrolysis reactor 6 is in horizontally disposed cylindrical structure.Biological sludge is entered by feed pump 5
Into pyrohydrolysis reactor 6, passes through discharging pump 8 after the completion of pyrohydrolysis and be delivered in steam flash vessel 9.
In the present embodiment, by control feed pump 5 and discharging pump 8, so that it is dirty effectively to control biology in pyrohydrolysis reactor 6
The input quantity and output quantity of mud can also be given birth to by the high steam driving sprayed in steam jetting hole 74 and steam diffusion hole 77
Transfer of the object sludge in pyrohydrolysis reactor 6 can also be existed by the rotate driving biological sludge of built-in steam pipeline 73
Transfer in pyrohydrolysis reactor 6.
In the present embodiment, a is steam, and b is biological sludge, and c is pyrohydrolysis concentrate.
In the present embodiment, biological sludge is preheated in material preheater 1, and will be preheated by material-handling pump 2
Biological sludge afterwards is continuously conveyed into level-one steam jet ejector 3.In 3 mesohigh steam of level-one steam jet ejector and biological sludge
It is sufficiently mixed, and level-one heating is carried out to biological sludge using the heat of high steam in mixed process, after gained heating
Biological sludge is stored in material storage storage 4.The biological sludge in material storage storage 4 is continuously conveyed to heat using feed pump 5
In hydrolysis reactor 6, while high steam is continuously sprayed into pyrohydrolysis reactor 6 by second steam injector 7, utilizes height
It presses the heat of steam to carry out second level heating to biological sludge, so that biological sludge is faster reached pyrohydrolysis required temperature, and high speed is sprayed
The high steam entered also can be such that the biological sludge in pyrohydrolysis reactor 6 is vigorously stirred, while built-in steam pipeline 73
Rotation can also enhance the heating effect and mass transfer effect of biological sludge, thus enable biological sludge within a short period of time sufficiently
Pyrohydrolysis required temperature is mixed and is rapidly achieved, final biological sludge completes pyrohydrolysis in pyrohydrolysis reactor 6.Pyrohydrolysis is anti-
The residence time of pressure and biological sludge in device 6 is answered to be controlled by discharging pump 8.It, will be hot by discharging pump 8 after the completion of pyrohydrolysis
Feed liquid after hydrolysis is continuously conveyed into steam flash vessel 9, and by control relief valve 10 to the feed liquid in steam flash vessel 9 into
Row flash distillation, efficiently separates the gas-liquid in feed liquid, wherein flash distillation gained low-pressure steam is continuously conveyed by relief valve 10 to material
For preheating to biological sludge in preheater 1, gained pyrohydrolysis concentrate is discharged from 9 bottom of steam flash vessel, passes through phase
The subsequent treatment process answered is handled, to realize the continuous processing to biological sludge.
In the present embodiment, biological sludge heating is equipped with level-one steam jet ejector 3 with pyrohydrolysis system, using level-one steam
High steam and biological sludge are sufficiently mixed by injector 3, carry out level-one heating to biological sludge using the heat of high steam,
Can augmentation of heat transfer effect, so that biological sludge is heated rapidly to 100 DEG C or so, steam consumption can be reduced, be conducive to drop
Reduction process cost, and high steam and biological sludge are mixed, mixed effect, i.e. level-one steam jet ejector 3 can be strengthened
The mixing efficiency and heat transfer efficiency that can be obviously improved between biological sludge and steam reduce heating time and steam consumption.It should
Biological sludge heating is equipped with material storage storage 4 with pyrohydrolysis system, for storing the biology after the heating of level-one steam jet ejector 3
Sludge, and 4 occupied area of material storage storage is smaller.On this basis, biological sludge heating is additionally provided with pyrohydrolysis system
For carrying out the second steam injector 7 of second level heating to biological sludge in pyrohydrolysis reactor 6, second steam is specially utilized
High steam is continuously conveyed into pyrohydrolysis reactor 6 and carries out second level heating to biological sludge for injector 7, and wherein second steam sprays
Emitter 7 includes built-in steam pipeline 73 and the steam jetting hole 74 being located on built-in steam pipeline 73, passes through built-in steam
High steam high speed is injected in pyrohydrolysis reactor 6 by delivery pipe 73 and steam jetting hole 74, not only can use high pressure steaming
The heat of vapour reinforces the heating effect to biological sludge, makes the heat-transfer effect of biological sludge more preferably, to enable biological sludge
It is rapidly achieved pyrohydrolysis required temperature, makes the biological sludge abundant pyrohydrolysis, and benefit within a short period of time in pyrohydrolysis reactor 6
With high speed spray into high steam also can enhanced biological sludge mixed effect, reduction be stirred required energy, be conducive to increase
The heated uniformity of strong biological sludge, to enhance pyrohydrolysis effect, while the high steam and built-in steam that high speed sprays into
The rotation of delivery pipe 73 also can promote biological sludge in the flowing of pyrohydrolysis reactor 6, and finally will be organic in biological sludge
Substance especially refractory organic compounds are efficiently hydrolyzed into organic acid and dissolved organic matter etc. can be effectively sharp by microorganism
Small-molecule substance, reaching improves pyrohydrolysis effect, reduces the purpose of processing cost.In addition, biological sludge heating and heat
Hydrolysis system, which is equipped with feed pump 5 and discharging pump 8, can effectively control hot water by controlling feed pump 5 and discharging pump 8
The input quantity and output quantity for solving biological sludge in reactor 6 are conducive to the stability for improving laser heating, pyrohydrolysis and flash distillation,
And be conducive to improve treatment effeciency.With heat-transfer effect, good, material is heated with pyrohydrolysis system for biological sludge heating of the present invention
The advantages that even property is good, steam consumption is small, heating time is short, continuous operation stability is good can be widely applied for degradation biological dirt
Mud (such as biogas residue, activated sludge), and can be realized effective degradation to biological sludge, there are good application value and application
Prospect.
Embodiment 9
A kind of heating of biological sludge and pyrohydrolysis system, as shown in figure 11, including successively with the material of pipeline head and the tail connection
Preheater 1, material-handling pump 2, level-one steam jet ejector 3, material storage storage 4, feed pump 5, pyrohydrolysis reactor 6, discharging pump
8, steam flash vessel 9 and relief valve 10, and further include the second level for being heated to biological sludge in pyrohydrolysis reactor 6
Steam jet ejector 7.
In the present embodiment, second steam injector 7 includes built-in steam pipeline 73, one end of built-in steam pipeline 73
It is installed in the side of pyrohydrolysis reactor 6, the other end extend into the inside of pyrohydrolysis reactor 6, on built-in steam pipeline 73
Equipped with steam jetting hole 74.
In the present embodiment, built-in 73 rotary type of steam pipeline is installed in the side of pyrohydrolysis reactor 6, and built-in steam is defeated
Send pipe 73 in the power mechanism 75 of pyrohydrolysis reactor 6 being externally connected to for rotating built-in steam pipeline 73, wherein moving
Force mechanisms 75 include that motor 751, driving wheel group 752 and the bearing 753 set on 6 end of pyrohydrolysis reactor, motor 751 pass through biography
Driving wheel group 752 is connected to built-in steam pipeline 73, drives built-in steam conveying in the support lower driving wheel group 752 of bearing 753
Pipe 73 rotates.In the present embodiment, built-in steam pipeline 73 can be in 6 inner rotation of pyrohydrolysis reactor, during rotation
Steam is constantly sprayed into using the steam jetting hole 74 being arranged on built-in steam pipeline 73, biological sludge is stirred, no
It only can be improved the heat-transfer effect of biological sludge, can also improve the mass transfer effect of biological sludge, to enable biological sludge more
Add and quickly reach pyrohydrolysis temperature, and further promotes pyrohydrolysis efficiency and pyrohydrolysis effect.
In the present embodiment, by being equipped with helical feed plate 78 on built-in steam pipeline 73, helical feed plate 78 is utilized
Guiding role, can be further improved the being heated evenly property and rate of heat transfer of feed liquid in pyrohydrolysis reactor 6, to make feed liquid
More rapidly and effectively complete pyrohydrolysis reaction.At the same time, in the present embodiment, built-in steam pipeline 73 can be in pyrohydrolysis
6 inner rotation of reactor has 78 pairs of biologies of helical feed plate using what is be arranged on built-in steam pipeline 73 during rotation
Sludge is stirred, and is constantly sprayed by the steam jetting hole 74 being arranged on built-in steam pipeline 73 during rotation
High steam can not only improve the heat-transfer effect of biological sludge, can also improve the mass transfer effect of biological sludge, to make biology
Sludge can more quickly reach pyrohydrolysis temperature, and then more efficiently that the organic substance in biological sludge is especially difficult
The small-molecule substance that degradation of organic substances matter pyrohydrolysis can be efficiently used at organic acid and dissolved organic matter etc. by microorganism.
In the present embodiment, pyrohydrolysis reactor 6 is in horizontally disposed cylindrical structure.Biological sludge is entered by feed pump 5
Into pyrohydrolysis reactor 6, passes through discharging pump 8 after the completion of pyrohydrolysis and be delivered in steam flash vessel 9.
In the present embodiment, by control feed pump 5 and discharging pump 8, to effectively control what pyrohydrolysis reactor 6 was imported and exported
Pressure difference drives transfer of the biological sludge in pyrohydrolysis reactor 6 by pressure difference, can also pass through 74 He of steam jetting hole
Transfer of the high steam driving biological sludge sprayed in steam diffusion hole 77 in pyrohydrolysis reactor 6, can also be by interior
Set transfer of the rotate driving biological sludge of steam pipeline 73 in pyrohydrolysis reactor 6.
In the present embodiment, a is high steam, and b is biological sludge, and c is pyrohydrolysis concentrate.
Embodiment 10
A kind of heating of biological sludge and pyrohydrolysis technique, using the biological sludge heating and pyrohydrolysis system in embodiment 9
Heating and pyrohydrolysis are carried out to biological sludge, specially operated using continous way, comprising the following steps:
S1, to the biological sludge (biological sludge be activated sludge, in municipal sewage plant) in material preheater 1
It is preheated.
S2, the biological sludge after preheating in step S1 is delivered in level-one steam jet ejector 3 using material-handling pump 2,
High steam is sufficiently mixed with biological sludge in level-one steam jet ejector 3, and biological sludge is carried out using high steam
Level-one heating, gained biological sludge are stored in material storage storage 4.
S3, the biological sludge in material storage storage 4 is continuously conveyed into pyrohydrolysis reactor 6 using feed pump 5, simultaneously
High steam is continuously conveyed into pyrohydrolysis reactor 6 using second steam injector 7, second level heating is carried out to biological sludge,
It is rapidly achieved biological sludge temperature pyrohydrolysis temperature (180 DEG C), it is anti-that pyrohydrolysis occurs in pyrohydrolysis reactor 6 for biological sludge
It answers.In the step, effective control to pyrohydrolysis process pressure, temperature and residence time is realized by control discharging pump 8.
S4, the feed liquid in step S3 after pyrohydrolysis is continuously conveyed into steam flash vessel 9 using discharging pump 8, simultaneously
The feed liquid in steam flash vessel 9 is flashed by controlling relief valve 10, obtains low-pressure steam and pyrohydrolysis concentrate, gained
Low-pressure steam is back in step S1 for preheating to the biological sludge in material preheater 1, gained pyrohydrolysis concentrate
Outlet carries out subsequent processing, completes the continuous processing to biological sludge.
In the present embodiment, biological sludge add twice using level-one steam jet ejector 3 and second steam injector 7
Heat makes the biological sludge in pyrohydrolysis reactor 6 quickly and effectively complete pyrohydrolysis, while passing through control feed pump 5, discharging
Pump 8 and relief valve 10 can make the feed liquid in steam flash vessel 9 quickly and effectively complete to flash, and keep the gas-liquid in feed liquid effective
Separation, to realize the continuous processing to biological sludge.
In the present embodiment, flash distillation gained pyrohydrolysis concentrate can be carried out subsequent by following any following methods in step S4
Processing.
Mode one: being cooled to 35 DEG C~55 DEG C for pyrohydrolysis concentrate, and progress level-one is sent into level-one anaerobic digester to detest
Oxygen digestion.
Mode two: being cooled to 35 DEG C~55 DEG C for pyrohydrolysis concentrate, and progress second level is sent into secondary anaerobic digester to detest
Oxygen digestion.
Mode three: pyrohydrolysis concentrate is separated by solid-liquid separation, and obtained solid is used as organic fertilizer after being dehydrated, being dried,
Gained liquid is sent as the raw material for producing biogas to level-one anaerobic digester or secondary anaerobic digester.
In summary, biological sludge heating of the present invention is steamed with pyrohydrolysis system equipped with level-one steam jet ejector 3 and second level
Vapour injector 7, wherein level-one steam jet ejector 3 with biological sludge by mixing using high steam and can add rapidly biological sludge
Heat realizes the primary heating (level-one heating) of biological sludge to 100 DEG C or so.On this basis, second steam injector 7 utilizes
High steam continues to enable biological sludge to be sufficiently mixed within a short period of time simultaneously to biological sludge reheating (second level heating)
It is rapidly achieved pyrohydrolysis required temperature, and by changing the connection side between second steam injector 7 and pyrohydrolysis reactor 6
Formula optimizes the incorporation way of high steam, can effectively control the residence time of biological sludge in pyrohydrolysis reactor 6, protects
Card pyrohydrolysis reaction is completed in a relatively short time.Biological sludge heating i.e. of the present invention is sprayed with level-one steam in pyrohydrolysis system
The collective effect of device 3 and second steam injector 7 can be obviously improved mixing and heat transfer between biological sludge and high steam
Efficiency, while the usage amount of heating required time and high steam can be also substantially reduced, convert biological sludge quickly and effectively
For the small-molecule substance that can be used effectively, reaching improves pyrohydrolysis effect, reduces the purpose of processing cost.Meanwhile the present invention
In also optimize the structure of pyrohydrolysis reactor 6, be arranged by the position of optimization steam injection pipe and nozzle or in reactor
The modes such as partition board 64 reinforce spraying into high steam to the agitation effects of biological sludge, with augmentation of heat transfer efficiency, further
Improve heating uniformity and pyrohydrolysis effect.In addition, biological sludge of the present invention heating be equipped in pyrohydrolysis system feed pump 5 and
Discharging pump 8 can effectively control the input quantity of biological sludge in pyrohydrolysis reactor 6 by control feed pump 5 and discharging pump 8
And output quantity, be conducive to the stability for improving laser heating, pyrohydrolysis and flash distillation.It can be seen that biological sludge heating of the present invention
With pyrohydrolysis system with heat-transfer effect is good, being heated evenly property of material is good, steam consumption is small, heating time is short, continuous operation
The advantages that stability is good can be widely applied for degradable organic pollutant (such as biogas residue, activated sludge), and can be realized to organic
Effective degradation of pollutant especially persistent organic pollutants has good application value and application prospect, meanwhile, this hair
The heating of bright biological sludge and pyrohydrolysis system be able to solve heat-transfer effect existing in the prior art is poor, material uneven heating is even,
The problems such as steam consumption is big, heating time is long, continuous operation stability is poor.Biological sludge heating of the present invention and pyrohydrolysis technique,
Heating is carried out with pyrohydrolysis system using the heating of above-mentioned biological sludge and pyrohydrolysis is able to achieve intermittent operation and continous way is grasped
Make, has many advantages, such as that simple process, easy to operate, processing cost is low, treatment effeciency is high, pyrohydrolysis effect is good, be conducive to improve
The utilization rate of biological sludge and the application range for expanding anaerobic digestion.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form.Though
So the present invention is disclosed as above with preferred embodiment, and however, it is not intended to limit the invention.It is any to be familiar with those skilled in the art
Member, in the case where not departing from Spirit Essence of the invention and technical solution, all using in the methods and techniques of the disclosure above
Appearance makes many possible changes and modifications or equivalent example modified to equivalent change to technical solution of the present invention.Therefore,
Anything that does not depart from the technical scheme of the invention are made to the above embodiment any simple according to the technical essence of the invention
Modification, equivalent replacement, equivalence changes and modification, all of which are still within the scope of protection of the technical scheme of the invention.
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| CN109626784A (en) * | 2019-02-26 | 2019-04-16 | 广西大学 | A kind of anticlogging sludge continuous thermal hydrolysis system |
| CN110723877A (en) * | 2019-11-27 | 2020-01-24 | 浙江绿治环保技术有限公司 | Adjustable reducing pipe sludge continuous thermal hydrolysis device |
| CN110734210A (en) * | 2019-11-27 | 2020-01-31 | 浙江绿治环保技术有限公司 | Thermal hydrolysis method of kinds of sludge |
| CN110902996A (en) * | 2019-11-27 | 2020-03-24 | 湖州中环水务有限责任公司 | Sludge pyrohydrolysis system |
| CN112609764A (en) * | 2020-12-23 | 2021-04-06 | 长沙理工大学 | A dredging robot sewage system |
| CN114558879A (en) * | 2022-03-29 | 2022-05-31 | 北京洁绿环境科技股份有限公司 | Kitchen waste pyrohydrolysis device and method |
| CN114703234A (en) * | 2022-03-29 | 2022-07-05 | 北京洁绿环境科技股份有限公司 | Kitchen waste treatment and resource utilization method and system |
| CN117049760A (en) * | 2023-08-17 | 2023-11-14 | 大庆亿莱检验检测技术服务有限公司 | Biological method oily sludge treatment control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109626784A (en) * | 2019-02-26 | 2019-04-16 | 广西大学 | A kind of anticlogging sludge continuous thermal hydrolysis system |
| CN110723877A (en) * | 2019-11-27 | 2020-01-24 | 浙江绿治环保技术有限公司 | Adjustable reducing pipe sludge continuous thermal hydrolysis device |
| CN110734210A (en) * | 2019-11-27 | 2020-01-31 | 浙江绿治环保技术有限公司 | Thermal hydrolysis method of kinds of sludge |
| CN110902996A (en) * | 2019-11-27 | 2020-03-24 | 湖州中环水务有限责任公司 | Sludge pyrohydrolysis system |
| CN110734210B (en) * | 2019-11-27 | 2022-06-03 | 浙江绿治环保技术有限公司 | Thermal hydrolysis method of sludge |
| CN112609764A (en) * | 2020-12-23 | 2021-04-06 | 长沙理工大学 | A dredging robot sewage system |
| CN112609764B (en) * | 2020-12-23 | 2022-01-28 | 长沙理工大学 | A dredging robot sewage system |
| CN114558879A (en) * | 2022-03-29 | 2022-05-31 | 北京洁绿环境科技股份有限公司 | Kitchen waste pyrohydrolysis device and method |
| CN114703234A (en) * | 2022-03-29 | 2022-07-05 | 北京洁绿环境科技股份有限公司 | Kitchen waste treatment and resource utilization method and system |
| CN117049760A (en) * | 2023-08-17 | 2023-11-14 | 大庆亿莱检验检测技术服务有限公司 | Biological method oily sludge treatment control system |
| CN117049760B (en) * | 2023-08-17 | 2024-03-19 | 大庆亿莱检验检测技术服务有限公司 | Biological method oily sludge treatment control system |
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