CN108751628A - A kind of processing method converting sludge to biomass fuel - Google Patents
A kind of processing method converting sludge to biomass fuel Download PDFInfo
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- CN108751628A CN108751628A CN201810440706.8A CN201810440706A CN108751628A CN 108751628 A CN108751628 A CN 108751628A CN 201810440706 A CN201810440706 A CN 201810440706A CN 108751628 A CN108751628 A CN 108751628A
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- sludge
- cooling
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- temperature
- filter device
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- 239000010802 sludge Substances 0.000 title claims abstract description 156
- 238000003672 processing method Methods 0.000 title claims abstract description 20
- 239000002028 Biomass Substances 0.000 title claims abstract description 19
- 239000000446 fuel Substances 0.000 title claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 58
- 238000001914 filtration Methods 0.000 claims abstract description 30
- 238000001035 drying Methods 0.000 claims abstract description 24
- 230000018044 dehydration Effects 0.000 claims abstract description 17
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 17
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 238000003763 carbonization Methods 0.000 claims description 38
- 239000010865 sewage Substances 0.000 claims description 35
- 239000003610 charcoal Substances 0.000 claims description 27
- 238000000197 pyrolysis Methods 0.000 claims description 20
- 238000012546 transfer Methods 0.000 claims description 18
- 239000002120 nanofilm Substances 0.000 claims description 13
- 238000004332 deodorization Methods 0.000 claims description 12
- 239000010801 sewage sludge Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 5
- 230000000813 microbial effect Effects 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 7
- 239000002245 particle Substances 0.000 description 5
- 239000003337 fertilizer Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002361 compost Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000361919 Metaphire sieboldi Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/46—Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
-
- 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
-
- 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
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/02—Multi-step carbonising or coking processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/14—Features of low-temperature carbonising processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/16—Features of high-temperature carbonising processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/02—Combustion or pyrolysis
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/08—Drying or removing water
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The present invention relates to a kind of processing methods converting sludge to biomass fuel, which is characterized in that includes the following steps：（1）Sludge pretreatment；（2）Mechanical dehydration；（3）Drying sludge；（4）Sludge is carbonized；（5）Cooling storage；Filtering accuracy is high, impurity is few, moisture content is low, quality of finished product good, efficient, realization maximum resource utilization, while realizing the can be recycled of environment.
Description
Technical field
The present invention relates to a kind of processing method more particularly to a kind of processing methods converting sludge to biomass fuel.
Background technology
In recent years, increasingly deep with the strategy of sustainable development, people's is increasingly obtained to the trans-utilization of sludge
Pay much attention to, to realize that the recycling to sludge, innoxious, minimizing are handled, is had taken up in the prior art just like burning, carbon
The practicable method such as change, compost, building materials；Meanwhile the existing soil resource in China because environmental pollution it is just increasingly worse, and gardens
Market, flowers market are but increasingly burning hot, thus for afforestation fertilizer, flower cultivation fertilizer and agricultural irrigation fertilizer
The demand of material is increasingly strong.
In the prior art for the processing method of sludge in the utilization of resources, environmental protection, cost-effective, feasibility etc.
Overall balance is all cannot achieve, burning, carbonization, the mode of building materials are real in the utilization of resources, environmental protection, feasibility etc.
Showed a degree of balance, but technical sophistication, operating cost it is high, using limited, be suitble to area that are fairly developed economically to use, and
By sludge manure by the way of compost, while reasonable control cost, can be truly realized turns waste into wealth, by sludge system
At Nutrition Soil, the harmless utilization of cycle of sludge is realized.
In the prior art for converting sludge to the processing method of biomass fuel, earthworm excrement is relatively mostly used as organic fertilizer
Material, generally requires to occupy a large amount of soils, according to the difference of Treatment stations scale, it is also necessary to certain complementary industrial land is configured,
It all has higher requirements to environment, temperature and humidity simultaneously.
Invention content
The technical problem to be solved by the present invention is to：In order to overcome the deficiencies in the prior art and defect, the present invention to carry
A kind of processing method converting sludge to biomass fuel is supplied, filtering accuracy is high, impurity is few, moisture content is low, final product quality
It is good, efficient, realize maximum resource utilization, while realizing the Ke Xunhuanliyong of environment.
The technical solution adopted by the present invention to solve the technical problems is：A kind of place converting sludge to biomass fuel
Reason method, which is characterized in that include the following steps：
（1）Sludge pretreatment：Sludge is passed sequentially through into the first filter device, the second filter device and third filter device, with sieve
Except the impurity in sludge, by sewage sludge storage after filtering in storage basin；
（2）Mechanical dehydration：By sludge after mechanical deep dehydration, the moisture percentage in sewage sludge of 80% or more former moisture content is down to 45%,
The sewage collecting of discharge is converged into sewage treatment plant to continue with；
（3）Drying sludge：Dewatered sludge is sent into drying sludge stove and is dried；
（4）Sludge is carbonized：Sludge after drying is sent into Sludge carbonization furnace, and passes through four heating carbonisations successively, and
Finally obtain pyrolysis oil and sludge base charcoal；
（5）Cooling storage：After sludge base charcoal is cooled to suitable temperature by cooling equipment, in dry ventilated environment
Pack storage；Pyrolysis oil is preserved by being sent into special container low temperature seal after cooling pipe.
Further, the quantity of first filter device is less than the quantity of second filter device but more than described the
The quantity of three filter devices, the quantity of second filter device are more than the quantity of the third filter device, first mistake
Filter device filtering accuracy be less than second and third filter device precision, described second and third filter device filtering accuracy
It is identical.
Further, the storage basin bottom is coated with molecular film, several through-holes is provided on the molecular film, in molecule
Below film one layer of tank is provided between storage basin bottom.
Further, screen-bowl centrifuge is selected in the mechanical dewatering stage, and contained according to required sludge
Water rate presets separating factor, semi-cone angle and the screen slot width of the screen-bowl centrifuge.
Further, the sewage being discharged after mechanical dehydration is also needed to before converging into sewage treatment plant by detection
The sewage being discharged after mechanical dehydration is detected acid-base property and content of beary metal in sewage by step by detection device, with
Sewage treatment plant is facilitated to determine different sewage water treatment methods according to the difference of acid-base property and content of beary metal in sewage.
Further, in sludge drying step, the dry sludge completed is pressed from both sides out by special fixture and is sent into sludge carbonization
In stove, the special fixture is covered with protective film, while drying sludge furnace bottom after the dry sludge completed of gripping in upper surface
Portion is provided with to stretch the sludge scrap collecting plate taken out.
Further, four heating carbonisation includes：
Warm：Sludge carbonization in-furnace temperature is increased to 150 ~ 250 DEG C, is forced into 2 ~ 5MPa so that is unseasoned complete
Sludge further realizes drying, further decreases moisture content；
Low-temperature carbonization：Sludge carbonization in-furnace temperature is increased to 250 ~ 350 DEG C, and is forced into 10MPa；
High temperature cabonization：Stop pressurization, and sludge carbonization in-furnace temperature will be increased to 550 ~ 750 DEG C；
Medium temperature is consolidated：Between being maintained at 400 ~ 500 DEG C by the sludge constant temperature of high temperature cabonization, pyrolysis oil and sludge are finally obtained
Base charcoal.
Further, after the sludge carbonization, before cooling store, it is also necessary to deodorization is carried out by deodorization step,
Described in pyrolysis oil carry out deodorization by adsorbing cage, activated carbon arrange in caged is provided in adsorbing cage, the sludge base is given birth to
Object charcoal realizes deodorization by adding appropriate ER BIO complex microbial communities.
Further, the cooling equipment includes input unit, cooling tower and output device, and the sludge after carbonization is logical
Input unit is crossed to be sent in cooling tower, it is to be cooled that cooling tower is sent out by output device after the completion, wherein set in cooling tower
It is equipped with the transfer passage arranged in the shape of a spiral, input unit is located at the top of helical form transfer passage, and output device is located at spiral
The lower section of shape transfer passage, and several temperature sensors are evenly arranged with along helical form transfer passage in cooling tower, work as spiral shell
Sludge base charcoal on rotation shape transfer passage is automatically reminded to outworker after being cooled to preset suitable temperature, and simultaneously
Start transfer passage and the cooling sludge base charcoal completed is sent into output device, while sludge base charcoal to be cooled being sent
Enter cooling tower.
Further, the cooling pipe is connected with each other by multiple straight pipelines and the integrated molding of U-tube road, in institute
The peripheral surface for stating straight pipeline and U-tube road is respectively arranged with cooling device, in the outlet of the cooling pipe and special container
Between be additionally provided with flow regulator for adjust pyrolysis oil stream amount, in special container being provided with temperature measuring equipment is used for
The pyrolysis oil temperature being collected into after detection is cooling.
The beneficial effects of the invention are as follows：
（1）Using multiple filtration process, respectively by coarse filtration, fine filtering and after filtering eventually, filter effect is further increased, while can have
Effect avoids filtering unsmooth problem caused by due to one of filter device is blocked；
（2）Storage basin bottom is coated with molecular film, is provided with several through-holes on molecular film, below molecular film with storage basin bottom
Between be provided with one layer of tank so that in storage basin sludge just in advance realize be dehydrated, further decrease moisture percentage in sewage sludge, together
When the sludge that is collected into of tank can periodically recycle participation and handle next time, realize can be recycled, realize the utilization of resources most
Bigization；
（3）The sewage being discharged after mechanical dehydration is also needed to before converging into sewage treatment plant by detecting step, will be through
The sewage being discharged after mechanical dehydration is crossed by acid-base property and content of beary metal in detection device detection sewage, is on the one hand convenient for dirt
Water treatment plant makes the sewage disposal scheme for being suitble to the sewage in advance, and another invention also allows for enterprise and shifts to an earlier date after the dehydration is completed
Respective handling is made to reach discharge standard to sewage；
（4）The dry sludge completed is pressed from both sides out by special fixture and is sent into Sludge carbonization furnace, and special fixture has been dried in gripping
At sludge after, be covered with protective film in upper surface, while avoiding sludge fragmentation from being scattered, sludge protected not reabsorb outside water
Point, while drying sludge furnace bottom is provided with for stretching the sludge scrap collecting plate taken out, is produced for collecting in drying process
Raw sludge clast realizes the Ke Xunhuanliyong of sludge, realizes maximum resource utilization；
（5）By the process of four heating carbonizations, realizes the process that sludge preheating, low temperature, high temperature and medium temperature are consolidated, further carry
High sludge carbonation rate and carbonization quality.
（6）The different types of cooling, the cooling procedure of sludge base charcoal are used for pyrolysis oil and sludge base charcoal
It is provided with helical form transfer passage, and several temperature sensors are evenly arranged with along helical form transfer passage in cooling tower,
Cooling precision is high, feeding and the outflow of sludge base charcoal are automatically controlled by the testing result of temperature sensor, automates journey
Degree is high；Pyrolysis oil is cooled down using cooling pipe, good cooling results.
Description of the drawings
Fig. 1 is a kind of step flow chart for the processing method converting sludge to biomass fuel of the present invention.
Specific implementation mode
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention.
As shown in Figure 1, a kind of processing method converting sludge to biomass fuel, which is characterized in that including following step
Suddenly：
（1）Sludge pretreatment：Sludge is passed sequentially through into the first filter device, the second filter device and third filter device, with sieve
Except the impurity in sludge, by sewage sludge storage after filtering in storage basin；
（2）Mechanical dehydration：By sludge after mechanical deep dehydration, the moisture percentage in sewage sludge of 80% or more former moisture content is down to 45%,
The sewage collecting of discharge is converged into sewage treatment plant to continue with；
（3）Drying sludge：Dewatered sludge is sent into drying sludge stove and is dried；
（4）Sludge is carbonized：Sludge after drying is sent into Sludge carbonization furnace, and passes through four heating carbonisations successively, and
Finally obtain pyrolysis oil and sludge base charcoal；
（5）Cooling storage：After sludge base charcoal is cooled to suitable temperature by cooling equipment, in dry ventilated environment
Pack storage；Pyrolysis oil is preserved by being sent into special container low temperature seal after cooling pipe.
Specifically, the quantity of the first filter device is less than the quantity of second filter device but is filtered more than the third
The quantity of device, the quantity of second filter device are more than the quantity of the third filter device, first filter device
Filtering accuracy be less than second and third filter device precision, described second is identical with the filtering accuracy of third filter device,
First filter device is substantially carried out coarse filtration work, to filter out the impurity of larger particles present in sludge, generally large particle
Impurity by naked eyes it can be seen directly that thus can manually be picked out in early period, because without setting excessive first
Filter device, but effectively avoid filtering unsmooth problem, the first filtering dress caused by due to one of filter device is blocked
It sets and should be greater than 1；Second filter device is substantially carried out fine filtering work, to filter out the impurity of smaller particle present in sludge,
The impurity of generally large particle is by visually can be seen directly that thus can manually be picked out in early period, and smaller particle
Impurity mix to not easily pass through to visually observe in sludge and find out, while small volume is not easy to be picked out, thus needs to set
It is to be used for that quantity the second filter devices more compared with the first filter device, which are set, to ensure filtering accuracy, the effect of third filter device
Benefit filter is carried out to sludge after the completion of coarse filtration and fine filtering, thus while ensureing filtering accuracy, does not need to be arranged excessively
Third filter device；Using multiple filtration process, respectively by coarse filtration, fine filtering and after filtering eventually, filter effect is further increased, together
When can effectively avoid because one of filter device be blocked due to caused by filter unsmooth problem.
Specifically, storage basin bottom is coated with molecular film, several through-holes is provided on the molecular film, below molecular film
One layer of tank is provided between storage basin bottom, the moist part in sludge enters molecular film by the through-hole on molecular film
In the tank of lower section so that sludge is just realized and is dehydrated in advance in storage basin, further decreases moisture percentage in sewage sludge, while water storage
The sludge that pond is collected into can periodically recycle participation and handle next time, realize Ke Xunhuanliyong, realization maximum resource utilization.
Specifically, screen-bowl centrifuge is selected in mechanical dewatering stage, and pre- according to required moisture percentage in sewage sludge
Separating factor, semi-cone angle and the screen slot width of the screen-bowl centrifuge are first set, separating factor is higher, dehydrating effect
Better, semi-cone angle is smaller, and solid content is lower in centrifugate, loss amount of the screen slot widths affect material in centrifugate；Sedimentation
Perforated basket centrifuge can realize filter effect again while dehydration, to further increase filtering accuracy.
Specifically, the sewage being discharged after mechanical dehydration also needs to walk by detection before converging into sewage treatment plant
Suddenly, the sewage being discharged after mechanical dehydration is detected into acid-base property and content of beary metal in sewage, a side by detection device
The sewage disposal scheme for being suitble to the sewage is made in face in advance convenient for sewage treatment plant, and another invention also allows for enterprise and is being dehydrated
Respective handling is made to reach discharge standard to sewage in advance at rear.
Specifically, in sludge drying step, the dry sludge completed is pressed from both sides out by special fixture and is sent into Sludge carbonization furnace
In, the special fixture is covered with protective film, while drying sludge furnace bottom after the dry sludge completed of gripping in upper surface
It is provided with for stretching the sludge scrap collecting plate taken out, while avoiding sludge fragmentation from being scattered, protects sludge not reabsorb outer
Boundary's moisture, while drying sludge furnace bottom is provided with for stretching the sludge scrap collecting plate taken out, for collecting drying process
The sludge clast of middle generation realizes the Ke Xunhuanliyong of sludge, realizes maximum resource utilization.
Specifically, four heating carbonisations include：
Warm：Sludge carbonization in-furnace temperature is increased to 150 ~ 250 DEG C, is forced into 2 ~ 5MPa so that is unseasoned complete
Sludge further realizes drying, further decreases moisture content；
Low-temperature carbonization：Sludge carbonization in-furnace temperature is increased to 250 ~ 350 DEG C, and is forced into 10MPa；
High temperature cabonization：Stop pressurization, and sludge carbonization in-furnace temperature will be increased to 550 ~ 750 DEG C；
Medium temperature is consolidated：Between being maintained at 400 ~ 500 DEG C by the sludge constant temperature of high temperature cabonization, pyrolysis oil and sludge are finally obtained
Base charcoal.
It realizes the process that sludge preheating, low temperature, high temperature and medium temperature are consolidated, is evaporated in warm not complete in drying process
The moisture being lost in entirely, while improving the environment to heat up for follow-up carbonization；Sludge carbon is realized during low-temperature carbonization and high temperature cabonization
Change slave low temperature to high temperature temperature-rise period, and medium temperature consolidate then by after high temperature cabonization sludge carry out constant temperature preserve one section when
Between, and promote be not carbonized the sludge being fully finished continue realize carbonization, to further increase sludge carbonation rate and carbonization quality.
Specifically, after sludge carbonization, before cooling store, it is also necessary to deodorization is carried out by deodorization step, wherein described
Pyrolysis oil carries out deodorization by adsorbing cage, and the activated carbon arranged in caged is provided in adsorbing cage, and the sludge base charcoal is logical
It crosses and adds appropriate ER BIO complex microbial communities realization deodorization, ER BIO complex microbial communities have strength decomposing organic matter
The effect of matter, fast decoupled stink, can effectively improve deodorizing effect using ER BIO complex microbial communities.
Specifically, cooling equipment includes input unit, cooling tower and output device, and the sludge after carbonization passes through input
Device is sent in cooling tower, and by output device cooling tower is sent out after the completion of to be cooled, is wherein provided in cooling tower and is in
The transfer passage of helical arrangement, input unit are located at the top of helical form transfer passage, and output device is located at helical form conveying
The lower section in channel, and several temperature sensors are evenly arranged with along helical form transfer passage in cooling tower, when helical form is defeated
It is automatically reminded to outworker after sending the sludge base charcoal on channel to be cooled to preset suitable temperature, and is started simultaneously defeated
It send channel that the cooling sludge base charcoal completed is sent into output device, while sludge base charcoal to be cooled being sent into and is cooled down
Tower.
Specifically, cooling pipe is connected with each other by multiple straight pipelines and the integrated molding of U-tube road, in the straight
The peripheral surface in pipeline and U-tube road is respectively arranged with cooling device, between the outlet and special container of the cooling pipe also
Be provided with flow regulator for adjust be pyrolyzed oil stream amount, be provided in special container temperature measuring equipment be used for detect it is cold
But the pyrolysis oil temperature being collected into afterwards.
The different types of cooling, the cooling procedure of sludge base charcoal is used to be arranged for pyrolysis oil and sludge base charcoal
There is helical form transfer passage, and several temperature sensors are evenly arranged with along helical form transfer passage in cooling tower, it is cooling
Precision is high, feeding and the outflow of sludge base charcoal, high degree of automation are automatically controlled by the testing result of temperature sensor；
Pyrolysis oil is cooled down using cooling pipe, good cooling results
It is enlightenment with above-mentioned desirable embodiment according to the present invention, through the above description, relevant staff completely may be used
Without departing from the scope of the technological thought of the present invention', to carry out various changes and amendments.The technical model of this invention
It encloses and is not limited to the contents of the specification, it is necessary to which its technical scope is determined according to right.
Claims (10)
1. a kind of processing method converting sludge to biomass fuel, which is characterized in that include the following steps：
（1）Sludge pretreatment：Sludge is passed sequentially through into the first filter device, the second filter device and third filter device, with sieve
Except the impurity in sludge, by sewage sludge storage after filtering in storage basin；
（2）Mechanical dehydration：By sludge after mechanical deep dehydration, the moisture percentage in sewage sludge of 80% or more former moisture content is down to 45%,
The sewage collecting of discharge is converged into sewage treatment plant to continue with；
（3）Drying sludge：Dewatered sludge is sent into drying sludge stove and is dried；
（4）Sludge is carbonized：Sludge after drying is sent into Sludge carbonization furnace, and passes through four heating carbonisations successively, and
Finally obtain pyrolysis oil and sludge base charcoal；
（5）Cooling storage：After sludge base charcoal is cooled to suitable temperature by cooling equipment, in dry ventilated environment
Pack storage；Pyrolysis oil is preserved by being sent into special container low temperature seal after cooling pipe.
2. a kind of processing method converting sludge to biomass fuel according to claim 1, it is characterised in that：It is described
The quantity of first filter device is less than the quantity of second filter device but the quantity more than the third filter device, described
The quantity of second filter device is more than the quantity of the third filter device, and the filtering accuracy of first filter device is less than the
Two and third filter device precision, described second is identical with the filtering accuracy of third filter device.
3. a kind of processing method converting sludge to biomass fuel according to claim 1, it is characterised in that：It is described
Storage basin bottom is coated with molecular film, is provided with several through-holes on the molecular film, below molecular film with storage basin bottom it
Between be provided with one layer of tank.
4. a kind of processing method converting sludge to biomass fuel according to claim 1, it is characterised in that：It is described
Screen-bowl centrifuge is selected in mechanical dewatering stage, and the sedimentation filtration is preset according to required moisture percentage in sewage sludge
Separating factor, semi-cone angle and the screen slot width of formula centrifugal dehydrator.
5. a kind of processing method converting sludge to biomass fuel according to claim 4, it is characterised in that：By
The sewage being discharged after mechanical dehydration is also needed to before converging into sewage treatment plant by detecting step, will be after mechanical dehydration
The sewage of discharge detects acid-base property and content of beary metal in sewage by detection device, to facilitate sewage treatment plant according to sewage
In acid-base property and the difference of content of beary metal determine different sewage water treatment methods.
6. a kind of processing method converting sludge to biomass fuel according to claim 1, it is characterised in that：Sludge
In drying steps, the dry sludge completed is pressed from both sides out by special fixture and is sent into Sludge carbonization furnace, and the special fixture is pressing from both sides
After taking the dry sludge completed, it is covered with protective film in upper surface, while drying sludge furnace bottom is provided with and is taken out for stretching
Sludge scrap collecting plate.
7. a kind of processing method converting sludge to biomass fuel according to claim 1, it is characterised in that：It is described
Four times heating carbonisation includes：
Warm：Sludge carbonization in-furnace temperature is increased to 150 ~ 250 DEG C, is forced into 2 ~ 5MPa so that is unseasoned complete
Sludge further realizes drying, further decreases moisture content；
Low-temperature carbonization：Sludge carbonization in-furnace temperature is increased to 250 ~ 350 DEG C, and is forced into 10MPa；
High temperature cabonization：Stop pressurization, and sludge carbonization in-furnace temperature will be increased to 550 ~ 750 DEG C；
Medium temperature is consolidated：Between being maintained at 400 ~ 500 DEG C by the sludge constant temperature of high temperature cabonization, pyrolysis oil and sludge are finally obtained
Base charcoal.
8. a kind of processing method converting sludge to biomass fuel according to claim 1, it is characterised in that：It is described
After sludge carbonization, before cooling store, it is also necessary to deodorization is carried out by deodorization step, wherein the pyrolysis oil passes through adsorbing cage
Deodorization is carried out, the activated carbon arranged in caged is provided in adsorbing cage, the sludge base charcoal is by adding appropriate ER BIO
Complex microbial community realizes deodorization.
9. a kind of processing method converting sludge to biomass fuel according to claim 1, it is characterised in that：It is described
Cooling equipment includes input unit, cooling tower and output device, and the sludge after carbonization is sent to cooling by input unit
In tower, cooling tower sent out by output device after the completion of to be cooled, be wherein provided in cooling tower arrange in the shape of a spiral it is defeated
Channel, input unit is sent to be located at the top of helical form transfer passage, output device is located at the lower section of helical form transfer passage, and cold
But several temperature sensors are evenly arranged with along helical form transfer passage in tower, when the sludge base on helical form transfer passage
Charcoal is automatically reminded to outworker after being cooled to preset suitable temperature, and starts transfer passage simultaneously and completed cooling
Sludge base charcoal be sent into output device, while by sludge base charcoal to be cooled be sent into cooling tower.
10. a kind of processing method converting sludge to biomass fuel according to claim 1, it is characterised in that：Institute
It states cooling pipe to be connected with each other by multiple straight pipelines and the integrated molding of U-tube road, in the straight pipeline and U-tube road
Peripheral surface be respectively arranged with cooling device, be additionally provided with flow-rate adjustment between the outlet and special container of the cooling pipe
Device is provided with temperature measuring equipment for detecting the heat being collected into after cooling for adjusting pyrolysis oil stream amount in special container
Solve oil temperature.
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| CN114517104A (en) * | 2020-11-19 | 2022-05-20 | 中国石油化工股份有限公司 | Oily sludge-based biochar and preparation method and application thereof |
| CN116354749A (en) * | 2023-04-10 | 2023-06-30 | 江苏小田园艺科技有限公司 | A method for making nutrient soil from sludge |
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