CN109052889A - Indirect heating packaged type industrial sludge continuous pyrolysis method and carbonizing plant - Google Patents
Indirect heating packaged type industrial sludge continuous pyrolysis method and carbonizing plant Download PDFInfo
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- CN109052889A CN109052889A CN201810522570.5A CN201810522570A CN109052889A CN 109052889 A CN109052889 A CN 109052889A CN 201810522570 A CN201810522570 A CN 201810522570A CN 109052889 A CN109052889 A CN 109052889A
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- 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
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- 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
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- 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
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- Treatment Of Sludge (AREA)
Abstract
A kind of indirect heating packaged type industrial sludge continuous pyrolysis method carbonizing plant, the process flow of this method includes: supplying step, moisture evaporation step, medium temperature desiccation step, high temperature cabonization step, temperature and pressure set-up procedure, cooling treatment step, oil gas condensation step, oil recovery step, exhaust gas polishing steps, exhaust gas discharges online detecting step and PM particulate matter monitors step on-line, carries out laser heating to sludge on the move using indirect stepped heating method.The invention has the advantages that technology equipment is moveable continuous pyrolysis carbide furnace, industrial sludge can directly be driven at the scene that it is generated, integrated dehydration, desiccation, continuous high-temperature are pyrolyzed the method for the technique being integrated and the comprehensive solution of a complete industrial sludge harmless treatment and resource utilization.
Description
Technical field
The present invention relates to a kind of pair of industrial sludge, oily sludge, pickling sludge, paper mill sludge, chemical sludge, Aluminum are red
Mud, biochemical sludge containing radioactivity, rare-earth tailing etc. and heave metals trace elements, radioactive element be in be mixed into having under state
Machine, inorganic nature sludge carry out safe and reliable harmless treatment, and will be mixed into inorganic matter therein, organic matter on this basis
It realizes and re-uses as resource, so as to provide a kind of safer, safe industrial sludge source harmless treatment
Method and its continuous carbonizing plant.
Background technique
It is well known that solid waste pyrolysis is the thermal instability using organic matter, it is heated under anaerobic or anoxia condition
The process of decomposition.Pyrolytic process organic matter occurs chemical breakdown and obtains gaseous state, liquid or solid combustible substance.
Most classical definition: J.Jones(Stanford the Research Institute, SRI of Stanford Research Institute) it mentions
Out: " under conditions of not being passed through oxygen, vapor or the carbon monoxide of heating into reactor, being made by indirect heating carbon containing
Thermochemical Decomposition occurs for organic matter, generates the process of fuel (gas, liquid and carbon black) ".He thinks through part combustion and pyrolysis
Product directly to provide the case where pyrolysis institute's calorific requirement, it should be known as part burning (Partial-combustion) or anoxic combustion
It burns (starved-air-combustion).
Pyrolysis is a kind of traditional production technology, is widely used in adding for the fuel such as timber, coal, heavy oil, oil shale
Work processing, has there is very long history.The initial stage seventies, pyrolysis are applied to municipal solid waste, solid waste warp
Cross not only available fuel and chemical products convenient for storage and transport, and institute under the high temperature conditions after this pyrolysis processing
Obtained breeze can also constitute hard and crisp inert solid product with inorganic matters certain in material and heavy metal component, keep its subsequent
Landfill stabilization operation can be safer and advantageously carry out.
With the development of modern industry, pyrolysis processing has become a kind of promising solid waste treatment method
One of.It can handle municipal refuse, and sludge, waste plastics, the industry such as scrap rubber and agricultural waste, radioactive waste etc. exist
The interior organic solid waste with certain energy.
Industrial sludge include petrochemical industry, coal chemical industry, printing and dyeing, smelting, metal-processing industry, chemicals manufacturing industry, paper-making industry,
The sludge that the processing and manufacturings such as non-ferrous metal mining, electronics, fur tanning and related industry chain Industrial Wastewater Treatment station generate.It is raw
With poisonous and hazardous chemical component in waste water caused by during producing, belong to danger wastes.
The burning disposal that previous danger wastes such as industrial sludge etc. is taken is a kind of universal hazardous waste processing side
Method.Although the burning disposal for being considered as " mode of harmless treatment " for a long time be with high-temperature oxydation decomposition of dangerous waste,
Also new pollutant is produced while minimizing, the generation of these pollutants is influenced to include waste sheet by Various Complex factor
The restriction of the property of body, incineration treatment technology, incinerator, reaction condition, controlled level etc..Although incineration treatment technology energy
It effectively realizes the minimizing of waste, but increases the discharge of carbon dioxide simultaneously, in order to avoid new secondary pollution, discard
The burning of object carries out reducing end discharge and the update of facility, therefore substantially increases the processing cost of waste.
Indirect heating packaged type continuous pyrolysis carbide furnace of the invention, can drive into industrial sludge its generate scene,
The technique and its equipment that integrated dehydration, desiccation, continuous high-temperature pyrolysis are integrated can effectively realize that industrial sludge source is innoxious
Processing disposition.It breaks through the technical field at present and policy manages various bottlenecks.Realizing that industrial sludge source is innoxious
Realize that the highly efficient regeneration of recycling utilizes while processing disposition.
Summary of the invention
In order to solve the shortcoming of conventional art, an object of the present invention is to provide a kind of moving for indirect heating
Formula continuous pyrolysis carbide furnace can drive into industrial sludge at the scene that it is generated, and integrated dehydration, desiccation, continuous high-temperature pyrolysis are
The method of the technique of one
It is a further object to provide a moveable continuous pyrolysis carbide furnaces, can drive into industrial sludge in its generation
Scene, the system equipment and be completely directed to industrial sludge, oil-containing that integrated dehydration, desiccation, continuous high-temperature pyrolysis are integrated
Sludge, pickling sludge, paper mill sludge, chemical sludge, Aluminum red mud, biochemical sludge containing radioactivity, rare-earth tailing etc. and a huge sum of money
Belong to microelement, radioactive element is in the organic and inorganic property sludge being mixed under state and carries out safe and reliable harmless treatment
Solution.
And inorganic matter therein will be mixed on this basis, organic matter is realized as resource and is re-used, so as to
A kind of safer, safe industrial sludge source method for innocent treatment and its continuous carbonizing plant are provided.
To achieve the above object, the technical solution used in the present invention is:
A kind of indirect heating packaged type industrial sludge continuous pyrolysis method, which is characterized in that the process flow of this method includes:
Supplying step, moisture evaporation step, medium temperature desiccation step, high temperature cabonization step, temperature and pressure set-up procedure, cooling treatment step, oil
Gas condensing steps, oil recovery step, exhaust gas polishing steps, exhaust gas discharge online detecting step and PM particulate matter on-line monitoring step
Suddenly, laser heating is carried out to sludge on the move using indirect stepped heating method.
80 DEG C -200 DEG C of the temperature of the moisture evaporation step；The temperature of the medium temperature desiccation step is 210 DEG C-
400 DEG C, the temperature of the carburising step is 410 DEG C -700 DEG C, and the temperature of the cooling treatment step is lower than 200 DEG C.
The supplying step: various complex material industry or chemical sludge are transported to down by mechanic conveyor
One step；
The moisture evaporation step: the waste heat after desiccation is carried out to the moisture of sludge on the move to sludge using next step
Carry out continuous evaporation removal；
The medium temperature desiccation step: waste heat carries out sludge in movement of advancing after being thermally decomposed using next step to sludge
Continous way desiccation；
The high temperature cabonization step: using the method for indirect heating, heating energy source can be electric energy, combustion gas, fuel oil but unlimited
In the above energy thermal energy by using the conveying device of sludge as heat-conducting medium, continous way heat biography is carried out to sludge in movement of advancing
It leads, and thermal decomposition process is carried out to the high-melting-point high-molecular compound in sludge in the state that is mixed into, obtain carbon material；
The cooling treatment step: gradually cooling treatment is carried out to the charcoal element in movement of advancing；
The temperature and pressure set-up procedure: to sludge in movement of advancing carry out continous way heat transfer, the temperature in thermal decomposition process into
Row on-line monitoring is simultaneously adjusted to intracavitary temperature and pressure is pyrolyzed in real time, and by making to be pyrolyzed intracavitary holding using injection nitrogen
Anaerobic state；
The exhaust gas polishing steps: using repeatedly used induction type electric heating filter as emission-control equipment centering
The gas of warm desiccation step discharge is handled, and processing mode includes:
Mode 1: when processing for petrochemical industry sludge, coal chemical industry sludge etc., by repeatedly used induction type electric heating
Filter setting are as follows: starting operating status, filter utilize induction type, microwave, high frequency waves, intermediate wave, high frequency but be not limited to
The fluid or gas for stating induction type are by the heating means of formula, and moment is by the particulate matter of uncombusted complicated easily coking by being lower than 100
DEG C channel in burning to 650 DEG C or more；
Mode 2: when for the processing such as Treatment of Metal Surface pickling sludge, paper mill sludge, since the gas componant of discharge is relatively pure
Only, repeatedly used induction type electric heating filter setting are as follows: power-off stationary state；By uncombusted ash content, particulate matter etc.
It is interim plug filter after, by the on-line monitoring of gas pressure, filter after being replaced and cleaned when needing to clear up, clearly
Washing method: filter is powered, and by being warming up to lower than 100 DEG C to 650 DEG C or more, uncombusted coking is burnt and is removed；
Repeatedly used induction type electric heating filter is in use, terminally positioned online dust monitoring instrument, it is ensured that row up to standard
It puts；
The oil gas condensation step: the oil gas condensation of oil-containing in above-mentioned gas-liquid recycling step is subjected to oil recovery, after condensation
Gas send back in exhaust gas polishing steps utilize repeatedly used induction type electric heating filter carry out final disposal；
The exhaust gas caustic scrubbing step: the waste heat after desiccation is carried out to the moisture of sludge in movement of advancing to sludge using middle warm area
It carries out in continous way removal process, alkali cleaning purification is carried out to the volatile organic compounds carried in the vapor of moisture evaporation step
Qualified discharge afterwards.
The on-line checking step includes:
(1), GPS satellite positioning is provided to the on-line checking data step of the real time monitoring forewarning management of mobile target.
(2), the on-line checking data step of GPS satellite localizing environment pollution monitoring early warning monitoring remote video is provided.
The temperature and pressure set-up procedure, in the progress of the sludge in moving continous way heat transfer of advancing, thermal decomposition process
Temperature carries out on-line monitoring and adjusts in real time to intracavitary temperature and pressure is pyrolyzed.
The carbonizing plant of a kind of indirect heating packaged type industrial sludge continuous pyrolysis method described in implementation, feature exist
In the packaged type continuous pyrolysis carbide furnace including indirect heating can drive into industrial sludge at the scene that it is generated, integrate de-
Water, desiccation, continuous high-temperature are pyrolyzed the process function being integrated, including following device:
Conveying device: various complex material industry or chemical sludge are conveyed by mechanic conveyor；Conveying device
It can be scraper plate conveying, oar blade type conveying, single screw conveying, double-screw type conveying but be not limited to the above mechanical mode of movement
Conveying；
Moisture vaporising device: the waste heat after desiccation is carried out to sludge using middle warm area, the moisture of sludge in movement of advancing is connected
Continuous formula removal；
Medium temperature desiccation apparatus: waste heat carries out continuous dry to sludge in movement of advancing after being thermally decomposed using high-temperature region to sludge
Change；
Carbonizing plant: using the method for indirect heating, heating energy source can be electric energy, combustion gas, fuel oil but be not limited to the above energy
Thermal energy continous way heat transfer is carried out to sludge in movement of advancing by using the conveying device of sludge as heat-conducting medium, and to dirt
Thermal decomposition process is carried out in the high-melting-point high-molecular compound for the state that is mixed into mud, obtains carbon material；
Emission-control equipment: repeatedly used induction type electric heating filter is used；
Cooling treatment device: cooling treatment is carried out to the carbon materials come out after the pyrolysis of high temperature cabonization device；Avoid carbon materials
The excessively high risk for encountering air and burning of temperature；
Oil-gas condenser: the oil gas condensation of oil-containing in above-mentioned gas-liquid recyclable device is subjected to oil recovery, condensed gas is sent
It returns in emission-control equipment and carries out final disposal using repeatedly used induction type electric heating filter；
Exhaust gas alkaline cleaner: the waste heat after desiccation is carried out to the moisture of sludge in movement of advancing to sludge using medium temperature desiccation apparatus
During carrying out continous way removal, it is net that alkali cleaning is carried out to the volatile organic compounds carried in the vapor of moisture evaporation step
Qualified discharge after change.
The invention has the advantages that technology equipment is moveable continuous pyrolysis carbide furnace, industry can be directly driven into
The method for the technique that sludge is integrated at the scene that it is generated, integrated dehydration, desiccation, continuous high-temperature pyrolysis and one are completely
The comprehensive solution of industrial sludge harmless treatment and resource utilization.
The present invention can integrated dehydration to industrial sludge, desiccation, continuous high-temperature be pyrolyzed the system being integrated, for work
Industry sludge, oily sludge, pickling sludge, paper mill sludge, chemical sludge, Aluminum red mud, biochemical sludge containing radioactivity, rare-earth tailing
Deng and heave metals trace elements, radioactive element be in the organic and inorganic property sludge that is mixed under state carry out it is safe and reliable
Harmless treatment and to treated carbon material it is sorted after available re-using；With the method phase of previous burning
Than generated sludge can be handled timely daily.
Detailed description of the invention
Fig. 1 is the flow chart of the method for the present invention；
Fig. 2 is the composition schematic diagram of apparatus of the present invention.
Description of symbols: 1, sludge path, 2, high-temperature flue gas path, 3, low temperature combustion gas path 4, cooling water the circulation path
Diameter, 5, plus nitrogen path, 7, gas-liquid recycle path, 8, steam path, 10, sludge inlet, 11, the exhanst gas outlet of B1,12, B1
Steam (vapor) outlet, 13, the sludge outlet of B1,14, the smoke inlet of B1,15, the sludge inlet of B2,16, the main heat source outlet of B2,
17, the steam (vapor) outlet of B2,18, the main heat source entrance of B2,19, the sludge outlet of B2,20, the sludge inlet of B3,21, the steam of B3
Outlet, 22, the sludge outlet of B3,23 and 24, the sludge inlet and sludge outlet of cooling treatment device, 25, the main heat source of B3 goes out
Mouthful, A, sludge conveyer, B, burner (main heat source), C, cooling treatment device, D, generating set, E, emission-control equipment,
G, oil-gas condenser, H, exhaust gas alkaline cleaner, I, on-Line Monitor Device, J, condensed fluid storage tank；K, wastewater treatment equipment, L,
Cooling water circulating device, M, calorific value compensating combustor (supplemental heat source), N, nitrogen making machine, P, pressure gauge, Q, oxygen sensor, T, temperature
Spend sensor, W, sludge metering device, B1, moisture vaporising device, B2, medium temperature desiccation apparatus, B3, high temperature cabonization device.
Specific embodiment
Of the invention further to illustrate description combined with specific embodiments below, the advantages and features of the present invention will be with retouching
It states and apparent.But examples are merely exemplary for these, and it is not intended to limit the scope of the present invention in any way.This field skill
Art personnel should be understood that without departing from the spirit and scope of the invention can details and shape to technical solution of the present invention
Formula is modified or is replaced, but these modifications and replacement are fallen within the protection scope of the present invention.
System of the invention is constituted and process flow is as shown in figure Fig. 1 and Fig. 2, in which:
A kind of packaged type continuous pyrolysis carbide furnace of indirect heating can drive into industrial sludge at the scene that it is generated, integrate de-
The previous continuity carbonization pyrolysis equipment of the method effective solution of technique that water, desiccation, continuous high-temperature pyrolysis are integrated
The excessive industrial sludge that cannot be introduced into of volume is in the deficiency at the scene that it is generated.Such as publication number: 201210126763.1 pairs
The method and device thereof system of radioactive waste progress radioactivity removal[4]。
Moisture vaporising device B1, medium temperature desiccation apparatus B2 and high temperature cabonization device B3 of the invention is mounted on same rack
On, moisture vaporising device B1 and the structure of medium temperature desiccation apparatus B2 are essentially identical, including are located at horizontal direction (or slightly tilting)
The roller that can be rotated, the roller outer peripheral surface be equipped with helical blade, for driving sludge to be axially moveable.It is steamed in moisture
The outside of transmitting apparatus B1 and medium temperature desiccation apparatus B2 are equipped in interlayer (path passed through for main heat source path 2), (center in roller
Hole) added by way of the various heating sources such as the combustion gas, fuel oil or the induction type electric heating that are generated by calorific value compensating combustor M
Heat.And high temperature cabonization device B3 does not have interlayer, main heat source passes through the centre bore of roller, is equipped in the left end of high temperature cabonization device B3
Burner B is main heating source；It is equipped with calorific value compensating combustor M in the right end of medium temperature desiccation apparatus B2, as supplemental heat source, when
Start calorific value compensating combustor M when heat content needed for burner B is not able to satisfy system.The main heat source that burner B is generated is through excessively high
The centre of the drum hole of warm carbonizing plant B3, from outlet 25, output enters the main heat source entrance 18 of medium temperature desiccation apparatus B2, in
Enter the interlayer of moisture vaporising device B1 after the heating interlayer of warm desiccation apparatus B2 from the entrance 14 of 16 and B1 of outlet, and from B1's
Exhanst gas outlet 11 is discharged.The energy consumption as needed for moisture vaporising device B1 and medium temperature desiccation apparatus B2 is higher, heated in order to increase
Area, so using inside and outside Bidirectional heating.
The present invention at work, industrial sludge by sludge conveyer A convey and by sludge metering device W metering after, from
Sludge inlet 10 is evaporated moisture removal into moisture vaporising device B1, and evaporating temperature is 80 DEG C -210 DEG C；Used heat
Can utilize medium temperature desiccation apparatus B2(middle warm area) waste heat (dirt from the top medium temperature desiccation apparatus B2 after desiccation is carried out to sludge
Mud entrance 15 enters in the sludge outlet 13 of the lower end moisture vaporising device B1) to dirty in movement of advancing in moisture vaporising device B1
The moisture of mud carries out continous way removal.
Then desiccation is carried out to sludge by medium temperature desiccation apparatus B2, the temperature of medium temperature desiccation is 210 DEG C -400 DEG C；Institute
The use of thermal energy is to utilize the high-temperature region high temperature cabonization device B3() sludge is thermally decomposed after waste heat it is (right from high temperature cabonization device B3
The thermal energy outlet 25 at end enters in the thermal energy entrance 18 of the lower end medium temperature desiccation apparatus B2) it is transported to advancing in medium temperature desiccation apparatus B2
Sludge carries out continous way desiccation step in dynamic.Sludge outlet 19 of the sludge on the right side of the lower end medium temperature desiccation apparatus B2 by desiccation
Into the sludge inlet 20 of following high temperature cabonization device B3, high temperature cabonization processing is carried out.
Cooling back installation C in Fig. 2 carries out cooling treatment to the carbon materials come out after high temperature cabonization device B3 pyrolysis,
To avoid there is the excessively high risk for encountering air and burning of carbon materials temperature.Cooling water pump L and water tank are passed through in cooling path 4
Connection introduces external water source as cooling water.
The steam of two steam (vapor) outlets 17 discharge above medium temperature desiccation apparatus B2 recycles path 7 along gas-liquid and oil gas is cold
Condenser G connection, and separation and recovery is implemented to liquefied substance and gas；Oil-gas condenser G is by the oil gas condensation of oil-containing in above-mentioned gas-liquid
Oil recovery is carried out, condensed gas is sent back in emission-control equipment E, is filtered using repeatedly used induction type electric heating
Device (returning emission-control equipment E) device carries out final disposal.The processing of gas-liquid does not influence the sludge continuity movement in traveling,
The sludge being dried carries out high temperature thermal decomposition in high temperature pyrolysis device B3, and the temperature of high temperature thermal decomposition is 410 DEG C -700 DEG C；
Generated thermal decomposition gas is discharged from the thermal energy of high temperature pyrolysis device B3 right end outlet 25 in high temperature pyrolysis device B3, and edge
High-temperature flue gas path 2 be connected with the thermal energy entrance 18 of the lower end medium temperature desiccation apparatus B2 above carry out the utilization of waste heat ladder.
For above-mentioned thermal energy stepped utilization method, industrial sludge implementation is evenly heated in order to realize, and guarantee to heat
It is with the designing points of the homogeneity on thermal decomposition time, moisture vaporising device B1, the moisture in industrial sludge is gone
While except processing, it is necessary to which what is gone out entrained by considering in the control and boil-off gas of the reasonable distribution and evaporation water temperature of the thermal efficiency waves
The online processing of hair property organic matter VOCs.
For example, since the moisture vaporising device B1 thermal energy for carrying out staged heating to sludge is derived from high temperature pyrolysis
Device B3, medium temperature desiccation apparatus B2 successively decrease the waste heat to get off.For moisture vaporising device B1, sludge 80 DEG C -210 DEG C it
Between heated, thus can remove the moisture in industrial sludge；The lower limit temperature of heating is arranged at 80 DEG C, if deposited in sludge
In alcohol substance, then this critical-temperature is exactly the minimum temperature that material alcohol starts evaporation.Ceiling temperature setting exists
210 DEG C then allowed for be mingled in volatile organic matter therein (VOCs volatile organic matter refer at room temperature saturation steam
Air pressure is greater than 70.91Pa, organic compound of the boiling point less than 260 DEG C under room temperature) thermal decomposition initial temperature problem, this temperature
The be just below hot boiling temperature of volatile organic matter.Therefore, (such as petrochemical industry in the higher sludge of the content of organics of processing
Sludge, coal chemical industry sludge etc.) it need to be to the removal of vapor progress alkali cleaning formula volatile organic matter VOCs.
For high temperature pyrolysis device B3, following problems have been fully taken into account in design, it may be assumed that will be mixed into industrial sludge
In the high-molecular compounds such as volatile organic matter be using by nitrogen it is carried out thermal decomposition process and by industrial sludge into
Row separation of vaporization, the designing points of the technical equipment are in view of being mixed into diversified organic matter or band in industrial sludge
There is radioactive substance, produces carbon material by carrying out thermal decomposition process to it using nitrogen；Radioactive isotope is gone
Except radioactive basic principle: " caesium " is most active in alkali metal in radioactive element, and vigorous reaction can occur with oxygen, raw
At a variety of caesium oxides.In humid air, the heat of oxidation is enough that caesium is made to melt and burn.Caesium is not reacted with nitrogen, but in height
It can be closed with hydrogenation under temperature, generate quite stable hydride.Caesium can occur with water it is violent react, fill water if caesium is put into
Sink in, will explode at once.Even and temperature can occur fiercely to react generation hydrogen, hydrogen as low as -116 DEG C of ice
Cesium oxide, the cesium hydroxide of generation are that "dead" alkali hydroxide neutral and alkali is strongest.Stable halogen is also produced with halogen
Compound, this is because its ionic radius feature brought greatly.It is similar that same otheralkali metal can also occur for caesium and organic matter
Reaction, but it is more active[6]。
The designing points one of high temperature thermal decomposition step are to radioactive substance, and caesium, iodine, radon, tritium etc. are implemented under the condition of high temperature
Vaporization process removes its radioactivity；The designing points of above-mentioned material cooling step are, by manufactured under anaerobic state
Carbon material solidifies radioactivity in carbon materials, it is made to reduce volume to the greatest extent.Center group, Commission of Science, Technology and Industry for National Defence's core
Research and practice extensively and profoundly have been done in terms of the processing of solid radiation waste by technical research institute etc.[7]。
For high temperature pyrolysis device B3, industrial sludge is heated between 410 DEG C -700 DEG C, getting rid of height
The industrial sludge of molecular compound is separated into charcoal element and other compositions.It heats why lower limit temperature is 410 DEG C, is because of work
Other inorganic matters other than organic matter in industry sludge, which have once arrived this temperature, will take place ingredient separation, and upper limit temperature
Spending us to be heated temperature setting at 700 DEG C is for following consideration: the temperature (boiling point) that radioactive substance caesium vaporizes
It is 671 DEG C, if there are also if Residual water, even when wherein remaining has the chlorine such as sodium chloride (NaCl), potassium chloride (KCl)
Compound ingredient is also unlikely to that ingredient breakdown occurs at a temperature of 700 DEG C.In the concerned process steps before high temperature pyrolysis step B3,
The composition of industrial sludge is only inorganic matter and carbon material, and is deposited in the pyrolysis chamber where carbon material as long as no oxygen
Then the boiling point of metal substance is when at 1000 DEG C or more, the boiling point of carbon material is then at 3000 DEG C or more；Set by us
Condition allow for maintaining the correlation properties of various substances, and the vapourizing temperature of only caesium is 671 DEG C, therefore we are heating
Temperature setting is 700 DEG C.
Temperature and pressure adjustment of the invention is to detect oxygen content and temperature sensing in pyrolysis step cavity by oxygen sensor Q
Device T detects the intracorporal temperature of (B1-B3) chamber, and being injected into the cavity of thermal decomposition using the nitrogen that nitrogen making machine N is produced is pyrolysis
It is remained in cavity in the atmosphere of anaerobic state, and in the temperature range of safety.Be in above-mentioned high temperature evaporation device
It is residual in material cooling device cavity when conveying device A and carbon material through reaching 700 DEG C of high temperature are delivered to cooling chamber
Depositing thermal decomposition gas will acutely heat up, and occur in violent thermal expansion and cavity acute variation of air pressure etc. in order to prevent no
Sharp phenomenon is provided with temperature and pressure regulating device；Moreover, material cooling device is lower than the temperature requirement of high temperature carbon material
It 50 DEG C, also completely can be to avoid oxidation reaction, reduction reaction occurs, by the circular flow of internal coolant so that it is guaranteed that its is cold
But function.In addition, the pyrolysis cavity temperature of sludge staged heating is then monitored by temperature sensor, and use the power on
The mode of start-stop burner adjusts temperature.
The more specific situation of the present invention is as follows: being carried out continuously using indirect heating to the sludge in movement of advancing
Formula heating evaporation moisture device, the entrance of medium temperature desiccation apparatus and high temperature pyrolysis carbonizing plant, outlet and all in-out ends
Rotation have to be prepared by the lesser founding materials of coefficient of thermal expansion with static engaging portion (founding materials can be cast iron, cast steel,
Graphite, ceramics etc.) but it is not limited to above-mentioned material, to improve the intracavitary closing level of each pyrolysis, therefore must to its pressed surface
It must implement precise finiss by the method for machining.
For the explosion-proof of above-mentioned medium temperature desiccation apparatus B2 and high temperature pyrolysis device B3, be using setting move it is vehicle-mounted
The nitrogen to extract from air is automatically controlled in the corollary apparatus nitrogen making machine group of formula carbonization system, is then injected into each add
Heat is intracavitary, and is the foundation started or stoped implemented to whole system at the oxygen content Data Detection of nitrogen by air displacement,
To guarantee the safe operation of system.
For the discharge of total system exhaust gas, it can be supervised by GPS satellite localizing environment pollution monitoring early warning wireless remote
Control on-line checking data terminal, can be provided for the prepared monitoring system of local environment administrative department it is true and reliable
Line examinations data, to ensure exhaust gas qualified discharge.
Claims (5)
1. a kind of indirect heating packaged type industrial sludge continuous pyrolysis method, which is characterized in that the process flow packet of this method
Include: supplying step, moisture evaporation step, medium temperature desiccation step, high temperature cabonization step, temperature and pressure set-up procedure, cooling treatment step,
Oil gas condensation step, oil recovery step, exhaust gas polishing steps, exhaust gas discharge online detecting step and PM particulate matter on-line monitoring
Step carries out laser heating to sludge on the move using indirect stepped heating method.
2. indirect heating packaged type industrial sludge continuous pyrolysis method as described in claim 1, which is characterized in that described
80 DEG C -200 DEG C of the temperature of moisture evaporation step；The temperature of the medium temperature desiccation step is 210 DEG C -400 DEG C, the carbon
The temperature for changing step is 410 DEG C -700 DEG C, and the temperature of the cooling treatment step is lower than 200 DEG C.
3. indirect heating packaged type industrial sludge continuous pyrolysis method as described in claim 1, which is characterized in that
The supplying step: various complex material industry or chemical sludge are transported in next step by mechanic conveyor
Suddenly；
The moisture evaporation step: the waste heat after desiccation is carried out to the moisture of sludge on the move to sludge using next step
Carry out continuous evaporation removal；
The medium temperature desiccation step: waste heat carries out sludge in movement of advancing after being thermally decomposed using next step to sludge
Continous way desiccation；
The high temperature cabonization step: using the method for indirect heating, heating energy source can be electric energy, combustion gas, fuel oil but unlimited
In the above energy thermal energy by using the conveying device of sludge as heat-conducting medium, continous way heat biography is carried out to sludge in movement of advancing
It leads, and thermal decomposition process is carried out to the high-melting-point high-molecular compound in sludge in the state that is mixed into, obtain carbon material；
The cooling treatment step: gradually cooling treatment is carried out to the charcoal element in movement of advancing；
The temperature and pressure set-up procedure: to sludge in movement of advancing carry out continous way heat transfer, the temperature in thermal decomposition process into
Row on-line monitoring is simultaneously adjusted to intracavitary temperature and pressure is pyrolyzed in real time, and by making to be pyrolyzed intracavitary holding using injection nitrogen
Anaerobic state；
The exhaust gas polishing steps: using repeatedly used induction type electric heating filter as emission-control equipment centering
The gas of warm desiccation step discharge is handled, and processing mode includes:
Mode 1: when processing for petrochemical industry sludge, coal chemical industry sludge etc., by repeatedly used induction type electric heating
Filter setting are as follows: starting operating status, filter utilize induction type, microwave, high frequency waves, intermediate wave, high frequency but be not limited to
The fluid or gas for stating induction type are by the heating means of formula, and moment is by the particulate matter of uncombusted complicated easily coking by being lower than 100
DEG C channel in burning to 650 DEG C or more；
Mode 2: when for the processing such as Treatment of Metal Surface pickling sludge, paper mill sludge, since the gas componant of discharge is relatively pure
Only, repeatedly used induction type electric heating filter setting are as follows: power-off stationary state；By uncombusted ash content, particulate matter etc.
It is interim plug filter after, by the on-line monitoring of gas pressure, filter after being replaced and cleaned when needing to clear up, clearly
Washing method: filter is powered, and by being warming up to lower than 100 DEG C to 650 DEG C or more, uncombusted coking is burnt and is removed；
Repeatedly used induction type electric heating filter is in use, terminally positioned online dust monitoring instrument, it is ensured that row up to standard
It puts；
The oil gas condensation step: the oil gas condensation of oil-containing in above-mentioned gas-liquid recycling step is subjected to oil recovery, after condensation
Gas send back in exhaust gas polishing steps utilize repeatedly used induction type electric heating filter carry out final disposal；
The exhaust gas caustic scrubbing step: the waste heat after desiccation is carried out to the moisture of sludge in movement of advancing to sludge using middle warm area
It carries out in continous way removal process, alkali cleaning purification is carried out to the volatile organic compounds carried in the vapor of moisture evaporation step
Qualified discharge afterwards.
4. indirect heating packaged type industrial sludge continuous pyrolysis method as described in claim 1, which is characterized in that described
On-line checking step includes:
(1), GPS satellite positioning is provided to the on-line checking data step of the real time monitoring forewarning management of mobile target；
(2), the on-line checking data step of GPS satellite localizing environment pollution monitoring early warning monitoring remote video is provided；
The temperature and pressure set-up procedure, to the sludge progress continous way heat transfer in movement of advancing, the temperature in thermal decomposition process
It carries out on-line monitoring and is adjusted in real time to intracavitary temperature and pressure is pyrolyzed.
5. a kind of carbonizing plant for implementing indirect heating packaged type industrial sludge continuous pyrolysis method described in claim 1,
It is characterised in that it includes the packaged type continuous pyrolysis carbide furnace of indirect heating, can drive into industrial sludge and show what it was generated
, integrated dehydration, desiccation, continuous high-temperature are pyrolyzed the process function being integrated, including following device:
Conveying device: various complex material industry or chemical sludge are conveyed by mechanic conveyor；Conveying device
It can be scraper plate conveying, oar blade type conveying, single screw conveying, double-screw type conveying but be not limited to the above mechanical mode of movement
Conveying；
Moisture vaporising device: the waste heat after desiccation is carried out to sludge using middle warm area, the moisture of sludge in movement of advancing is connected
Continuous formula removal；
Medium temperature desiccation apparatus: waste heat carries out continuous dry to sludge in movement of advancing after being thermally decomposed using high-temperature region to sludge
Change；
Carbonizing plant: using the method for indirect heating, heating energy source can be electric energy, combustion gas, fuel oil but be not limited to the above energy
Thermal energy continous way heat transfer is carried out to sludge in movement of advancing by using the conveying device of sludge as heat-conducting medium, and to dirt
Thermal decomposition process is carried out in the high-melting-point high-molecular compound for the state that is mixed into mud, obtains carbon material；
Emission-control equipment: repeatedly used induction type electric heating filter is used；
Cooling treatment device: cooling treatment is carried out to the carbon materials come out after the pyrolysis of high temperature cabonization device；Avoid carbon materials
The excessively high risk for encountering air and burning of temperature；
Oil-gas condenser: the oil gas condensation of oil-containing in above-mentioned gas-liquid recyclable device is subjected to oil recovery, condensed gas is sent
It returns in emission-control equipment and carries out final disposal using repeatedly used induction type electric heating filter；
Exhaust gas alkaline cleaner: the waste heat after desiccation is carried out to the moisture of sludge in movement of advancing to sludge using medium temperature desiccation apparatus
During carrying out continous way removal, it is net that alkali cleaning is carried out to the volatile organic compounds carried in the vapor of moisture evaporation step
Qualified discharge after change.
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