CN106938881A - A kind of processing system and method for carbonaceous solids discarded object - Google Patents

A kind of processing system and method for carbonaceous solids discarded object Download PDF

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Publication number
CN106938881A
CN106938881A CN201710132977.2A CN201710132977A CN106938881A CN 106938881 A CN106938881 A CN 106938881A CN 201710132977 A CN201710132977 A CN 201710132977A CN 106938881 A CN106938881 A CN 106938881A
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China
Prior art keywords
sludge
unit
waste heat
pyrolysis
incinerator
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CN201710132977.2A
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Inventor
倪建军
杨震
江晶亮
池国镇
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Shanghai Boiler Works Co Ltd
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Shanghai Boiler Works Co Ltd
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Priority to CN201710132977.2A priority Critical patent/CN106938881A/en
Publication of CN106938881A publication Critical patent/CN106938881A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/10Treatment of sludge; Devices therefor by pyrolysis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/18Treatment of sludge; Devices therefor by thermal conditioning
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/001Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00Feeding or distributing other fuel to combustion apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2200/00Pretreatment and supply of solid fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2201/00Pretreatment of solid fuel
    • F23K2201/20Drying
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/40Valorisation of by-products of wastewater, sewage or sludge processing

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Treatment Of Sludge (AREA)
  • Gasification And Melting Of Waste (AREA)

Abstract

The invention provides a kind of processing system of carbonaceous solids discarded object, predrying unit is stored including sludge, sludge stores predrying unit connection drying sludge unit, drying sludge unit connects pyrolyzing sludge unit and combustion gas burning and waste heat recovery unit, the connection combustion gas burning of pyrolyzing sludge unit and waste heat recovery unit.The present invention uses self-heating type thermal decomposition gasification system, and gas phase and solid phase are separately handled, and by three step process sludge such as mechanical dehydration, drying and dehydrating and pyrolytic gasification, realize the innoxious of sludge, minimizing, recycling and stabilisation.Heat carries heat by sludge and realizes self-balancing in itself in system, when sewage sludge quality is poor, in the case that calorific value is relatively low, increases coke pyrolysis reactor to realize the heat balance of system.The system fully achieves the clean environment firendly processing of the carbonaceous solids discarded object such as sludge Wu dioxin emission and dust emission problem, and application prospect is very wide.

Description

A kind of processing system and method for carbonaceous solids discarded object
Technical field
The present invention relates to the processing system and method for a kind of carbonaceous solids discarded object such as sludge, belong to solid waste processing Technical field.
Background technology
In recent decades, the quickening with our national urbanization process and the high speed development of social economy, municipal drainage The construction of infrastructure has been made significant headway, and municipal sewage networking rate is improved constantly.National urban wastewater treatment firm is produced About 1,300,000 tons/year of dewatered sludge, and increased with every year about 10% speed., will if municipal sewage is all handled Produce 8,400,000 tons/year of dewatered sludge amount.Due to containing substantial amounts of poisonous and harmful substances in Sewage Plant biological sludge, easily trigger two Secondary pollution problem.Therefore, how by yield is huge, complicated component sludge passes through scientific disposal, stabilizing it, minimizing, Innoxious, recycling, it has also become the problem that China or even whole world environment circle are paid close attention to jointly.China municipal sludge processing disposal by Enough attention is not affected by long-term, treatment facility is built serious delayed.According to the investigation of Chinese environmental ERC, each Plant in method of disposal, agricultural to account for 44.8%, land landfill accounts for 31%, and other disposal account for 10.5%, separately have about 13.7% municipal sludge has just been come back in nature without any processing.
At present, the processing mode of municipal sludge is mainly the conventional meanses such as landfill, row sea, burning.Landfill, because sludge is A kind of complicated mixture, the inside contains many harmful substances, and after time length, the harmful substance in sludge can soak at leisure Thoroughly among soil, so as to cause seriously to destroy to soil property.Row sea, can be to ocean if the improper direct row sea of Treatment of Sludge The living resources such as fish cause serious pollution, destroy the ecological environment of ocean, making the resource of ocean cannot effectively utilize, Even catastrophic consequence.Burn, due to containing a large amount of harmful substances in sludge, and burning is carried out under aerobic environment Combustion reaction, while catalyst of the heavy metal contained in sludge but also as reaction, so inevitable in combustion process Meeting produce substantial amounts of harmful substance, such as nitrogen oxides, sulfur dioxide and dioxin-like chemical, so as to be caused to ecological environment Secondary pollution.
In summary, the process problem of the solid waste rubbish such as sludge has become increasingly serious and sent out as limitation city health The key factor of exhibition, how sludge to be stabilized, minimizing, innoxious, recycling it is very urgent.The application will be carried Go out the new technology system and its application method of a kind of solid waste garbage harmless recycling treatment such as sludge.
The content of the invention
The technical problem to be solved in the present invention is:Make full use of the calorific value of solid waste rubbish in itself to carry out self to decompose, not Produce secondary pollution, calorific value itself is not high be not enough to be formed energy circulation balance when, using additional minimum energy, thrown minimum On the premise of money and operating cost, energy supplement is carried out in most environmentally friendly mode, complete solid waste rubbish clean environment firendly conversion or Utilize, be fully solved the generation of the secondary pollutions such as heavy metal, bioxin.
In order to solve the above-mentioned technical problem, the technical scheme is that providing a kind of processing system of carbonaceous solids discarded object System, it is characterised in that:Predrying unit is stored including sludge, sludge stores predrying unit connection drying sludge unit, sludge Drying unit connects pyrolyzing sludge unit and combustion gas burning and waste heat recovery unit, the connection combustion gas of pyrolyzing sludge unit burn with it is remaining Heat recovery units.
Preferably, the sludge, which stores predrying unit, includes warehouse of sludge, and warehouse of sludge connects sludge by bucket elevator Tank, sludge tank connection emchanically centrifugal separation dewaterer;The outfall of emchanically centrifugal separation dewaterer and warehouse of sludge it is clear Clear liquid drainage is connected with sewage pump.
Preferably, the drying sludge unit includes drying drum, and the hot water and steam outlet of waste heat boiler connects drying drum, The sludge stores the sludge outlet connection drying drum of predrying unit, the recirculation water steam outlet connection waste heat of drying drum Boiler.
Preferably, the combustion gas burning includes incinerator, the drying gas floss hole of the drying drum with waste heat recovery unit Incinerator is connected, the low-temperature flue gas outlet connection air preheater high temperature side entrance of the waste heat boiler, air preheater is low Warm side entrance is air intake, air preheater low temperature side outlet connection incinerator.
Preferably, the pyrolyzing sludge unit includes pyrolysis reactor, the sludge outlet connection pyrolysis of the drying drum The reactant entrance of reactor, the flue gas discharge opening point two-way of the incinerator, connects the thermal source inlet of pyrolysis reactor all the way, The thermal source outlet flue gas of another road and pyrolysis reactor sends into the waste heat boiler by removing waste heat boiler pipeline together;Pyrolysis is anti- The thermal source outlet of device is answered to connect the waste heat boiler;The pyrolysis gaseous state product outlet connection cyclone separator of pyrolysis reactor, The gas discharge outlet of cyclone separator connects the incinerator;The pyrolysis solid product outlet connecting secondary of pyrolysis reactor is returned Receive processing equipment.
Preferably, also including when system capacity can not realize self-balancing, the energy for providing energy as auxiliary thermal source is auxiliary Help unit.
It is highly preferred that the energy auxiliary unit include coke pyrolysis reactor, coke pyrolysis reactor connection described in go Exhaust-heat boiler flue gas pipeline;The coke pyrolysis gas outlet of coke pyrolysis reactor connects the incinerator.
Present invention also offers a kind of processing method of carbonaceous solids discarded object, it is characterised in that:Using above-mentioned carbon containing The processing system of solid waste, step is:
Step 1:Sludge in warehouse of sludge is promoted in sludge tank by bucket elevator, the sludge feeding machinery in sludge tank Centrifugal dewatering machine is dehydrated, and water content in sludge is down to less than 60% from 80%~90%;
Step 2:Sludge feeding drying drum after dehydration is dried, and the moisture in sludge is reduced to less than 25%;
Step 3:Dried sludge feeding pyrolysis reactor carries out most of organic matter in pyrolytic reaction, removing sludge and waved Hair point;The residue of pyrolytic reaction generation goes secondary utilization by water Quench;
Step 4:Feeding incinerator is burned after the pyrolysis gas ash disposal of pyrolytic reaction generation, is burned the heat smoke produced and is gone pyrolysis Reactor is as indirect type heat exchange thermal source, and the partial fume removes waste heat boiler after pyrolysis reactor outflow, for producing hot water Steam;
Step 5:Drying drum uses the hot water and steam to carry out indirect type drying to sludge for thermal source, and what drying drum came out returns Flowing water steam sends into waste heat boiler;The flue gas that waste heat boiler is produced delivers to air preheater heating air, after air themperature lifting Deliver to incinerator burning.
Preferably, the operation temperature of the drying drum is 140~160 DEG C;
The pyrolysis reactor operation temperature is 550~650 DEG C;
The operation temperature of the incinerator is 900~1100 DEG C;
The incinerator burns the heat smoke produced and goes pyrolysis reactor to be exchanged heat thermal source as indirect type, the partial fume from The temperature of pyrolysis reactor outflow is 650~750 DEG C;
The pressure of the hot water and steam of the waste heat boiler is that 0.5~0.8MPa, temperature are 150~200 DEG C;
What the waste heat boiler was produced delivers to the flue-gas temperature of air preheater for 350~450 DEG C;
The hot air temperature for delivering to incinerator of the air preheater outlet is more than 300 DEG C.
Preferably, when sludge calorific value as little as system can not produce the pyrolysis gas of enough calorific values by pyrolyzing sludge, burn Stove combustion product gases temperature and flow, which do not reach, to be dried and the required total amount of heat of pyrolysis, is now started energy auxiliary unit and is provided auxiliary heat Amount.
The present invention uses self-heating type thermal decomposition gasification system, and gas phase and solid phase are separately handled, and pass through mechanical dehydration, drying and dehydrating With three step process sludge such as pyrolytic gasification, the innoxious of sludge, minimizing, recycling and stabilisation are realized.It is hot in system Amount carries heat by sludge and realizes self-balancing in itself, and when sewage sludge quality is poor, in the case that calorific value is relatively low, increase coke pyrolysis is anti- Device is answered to realize the heat balance of system.The system fully achieves sludge etc. and contained Wu dioxin emission and dust emission problem The clean environment firendly processing of carbon solid waste, application prospect is very wide.
Stable and reliable operation of the present invention, it is easy to maximization amplification, environmental protection and energy saving, compared with prior art, with following beneficial Effect:
(1) present invention uses self-heated pyrolysis reaction principle, realizes Treatment of Sludge gas, solid separation, sludge residue all with Low slag form discharge, with a certain amount of carbon residue, can be utilized as the raw material secondary recovery of activated carbon;
(2) present invention uses pyrolysis gas independent burning system, and gas phase is fully converted to CO by high temperature incineration process2And H2O, A small amount of sulfide is completely converted into SOx, and no bioxin is produced, and produced heat smoke is for warm needed for internal anhydro drying and pyrolysis Amount, system capacity realizes self-balancing, and capacity usage ratio is higher;
(3) pyrolysis reaction temperature of the present invention is carried out below 650 DEG C, during completely avoid the generation and analysis of bioxin Go out, realize sewage sludge harmlessness cleaning treatment.
Brief description of the drawings
The processing system schematic diagram for the carbonaceous solids discarded object that Fig. 1 provides for the present embodiment;
Description of reference numerals:
1- sludge streams;2- warehouse of sludge;3- bucket elevators;4- sludge tanks;5- emchanically centrifugal separation dewaterers;6- sewage; 7- clarified solutions;8- drying drums;9- air preheaters;10- air;11- waste heat boilers;12- discharges flue gas;13- hot-airs;14- Low-temperature flue gas;15- backflow water vapours;16- dries discharge gas;17- hot water and steams;18- incinerator burners;19- removes waste heat boiler Flue gas pipeline;Pyrolysis gas after 20- ash disposal;21- incinerators;22- pyrolysis reactors;23- removes pyrolysis smoke;24- collects sewage stream; 25- is pyrolyzed solid product;26- is pyrolyzed gaseous products;27- cyclone separators;28- removes coke reactor flue gas;29- coke is pyrolyzed Reactor;30- coke;31- coke pyrolysis gas;32- sewage pumps.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, people in the art Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited Scope.
The processing system schematic diagram for the carbonaceous solids discarded object that Fig. 1 provides for the present embodiment, described carbonaceous solids are discarded The processing system of thing stores predrying unit, drying sludge unit, pyrolyzing sludge unit, combustion gas burning and waste heat recovery by sludge Unit and energy auxiliary unit etc. are constituted.
Described sludge stores predrying unit and taken off including warehouse of sludge 2, bucket elevator 3, sludge tank 4, emchanically centrifugal separation Water dispenser 5, warehouse of sludge 2 connects sludge tank 4, the connection emchanically centrifugal separation of sludge tank 4 dewaterer 5 by bucket elevator 3.Sludge stream 1 sludge entered in warehouse of sludge 2, warehouse of sludge 2 is promoted in sludge tank 4 by bucket elevator 3, and the sludge in sludge tank 4 enters Enter emchanically centrifugal separation dewaterer 5, emchanically centrifugal separation dewaterer 5 make in sludge water content from 80%~90% be down to 60% with Under, the sewage 6 removed will go after-treatment by sewage pump 32.Clarified solution 7 in warehouse of sludge 2 is also fed into sewage pump 32, The discharge of sewage pump 32 collects sewage stream 24.
Described drying sludge unit includes drying drum 8, the feeding drying drum 8 of hot water and steam 17 of waste heat boiler 11.Machinery Dehydration is dried in sludge feeding drying drum 8 after centrifugal dewatering machine 5 is dehydrated, 150 DEG C or so of the operation in drying drum Dried under temperature conditionss, drying drum 8 uses hot water and steam 17 to carry out indirect type drying to sludge for thermal source, makes the moisture in sludge Less than 25% is reduced to by 60%.The feeding waste heat boiler 11 of backflow water vapour 15 that drying drum 8 comes out.
Described combustion gas burning includes incinerator 21, the row of drying that the drying process of drying drum 8 is produced with waste heat recovery unit Deflation 16 all send incinerator 21 to carry out burning disposal.The feeding air preheater 9 of low-temperature flue gas 14 that waste heat boiler 11 is discharged, with The air 10 of air inlet preheater 9 exchanges heat, and air 10 forms hot-air 13 after exchanging heat and sends into burning by incinerator burner 18 Stove 21, low-temperature flue gas 14 forms discharge flue gas 12 and discharged after exchanging heat.
Described pyrolyzing sludge unit includes pyrolysis reactor 22, the dried sludge of drying drum 8 feeding pyrolysis reactor 22, high temperature pyrolysis processing is carried out to sludge by pyrolysis reactor 22;The pyrolysis smoke 23 that goes that incinerator 21 is produced sends into heat Reactor 22 is solved, pyrolysis reactor 22 goes pyrolysis smoke 23 as heat carrier, sludge is entered using what the burning of incinerator 21 was produced The revolution pyrolysis of row indirect type.Pyrolysis gaseous products 26 send cyclone separator 27, are pyrolyzed after the ash disposal after the separation of cyclone separator 27 Gas 20 send incinerator 21 to burn;Incinerator 21 is burned in the high-temperature flue gas that pyrolysis gas 20 after ash disposal produces 1000 DEG C, high-temperature flue gas Partial heat (going pyrolysis smoke 23 to carry in Fig. 1) (is gone remaining as the heat of pyrolysis reactor 22, remainder heat in Fig. 1 Heat boiler flue gas pipeline 19 is carried) hot water and steam 17 for producing high temperature is reclaimed by waste heat boiler 11, hot water and steam 17 is as dry The thermal source of dry drum 8.Being pyrolyzed solid product 25 can secondary recovery processing utilization by water Quench.
Described energy auxiliary unit is mainly used in the system heating preheating of start-up, and relatively low in sludge calorific value In the case of, system capacity provides up energy self-balancing when can not realize self-balancing as auxiliary thermal source.It is anti-using coke pyrolysis Device 29 is answered, to go the heat smoke (removing coke reactor flue gas 28 in Fig. 1) that exhaust-heat boiler flue gas pipeline 19 is attracted to be participated in for thermal source The pyrolytic gasification reaction of coke 30, in 800 DEG C of -900 DEG C of generation pyrolytic reactions, makes combustible component CO, CH in flue gas4、H2Improve More than 50%;The coke pyrolysis gas 31 of generation send incinerator 21 to burn.
By taking the self-heating type thermal decomposition gasification process system for handling 200 tons of sludge quantity (wet basis) in a set of day as an example.Sludge is conventional Municipal sludge.The design parameter of pyrolytic reaction device is as follows:
Feed sludge is aqueous:85%;
Sludge is aqueous after mechanical dehydration:60%;
Sludge is aqueous after drying:25%;
Air preheater outlet air temperature:305℃;
Operating pressure:Normal pressure;
Operation temperature:150 DEG C of drying drum, is pyrolyzed 620 DEG C of drum;
Sludge dry base heat value:20000kJ/kg;
Contain about 65% organic matter and 35% inorganic matter in sludge;
Waste heat boiler produces water vapour 0.69MPa, 170 DEG C of temperature;
980 DEG C of flue-gas temperature after burning.
After processing
Carbon containing low slag calorific value:9000kJ/kg, sells for activated carbon raw material;
320 DEG C of smog discharge temperature;
Low solid impurity particle:2-5mm, loose structure.
System capacity realizes self-balancing, without starting coke pyrolysis reactor.
It can be drawn from data above, the present invention is ensured using the gasification design of self-heating pyrolyzing sludge in sludge calorific value Under the premise of can realize and complete clean conversion processing using dirty heat itself, without external heat source, while only sludge institute in itself The discharge of moisture content, no dust emission, total system realizes gas, solid separate type processing, and the secondary dirt such as bioxin and dust is not produced Dye.Compared to conventional sludge fluidized combustion processing mode, saving energy consumption more than 10%, dioxin emission value is reduced to 5%, dust Discharge is reduced to 10%.
In summary, the present invention has obvious technological innovation advantage, it is adaptable to focusing on for municipal sludge, real Existing recycling, innoxious, stabilisation and minimizing, substitute the technologies such as original Sludge landfill, burning and compost.

Claims (10)

1. a kind of processing system of carbonaceous solids discarded object, it is characterised in that:Predrying unit, sludge storage are stored including sludge Predrying unit connects drying sludge unit, drying sludge unit connection pyrolyzing sludge unit and combustion gas burning and waste heat recovery list Member, the connection combustion gas burning of pyrolyzing sludge unit and waste heat recovery unit.
2. a kind of processing system of carbonaceous solids discarded object as claimed in claim 1, it is characterised in that:The sludge storage is pre- Drying unit includes warehouse of sludge (2), and warehouse of sludge (2) connects sludge tank (4), sludge tank (4) connection machine by bucket elevator (3) Tool centrifugal dewatering machine (5);The outfall of emchanically centrifugal separation dewaterer (5) and the clarified solution row of warehouse of sludge (2) Outlet is connected with sewage pump (32).
3. a kind of processing system of carbonaceous solids discarded object as claimed in claim 1, it is characterised in that:The drying sludge list Member includes drying drum (8), and the hot water and steam outlet connection drying drum (8) of waste heat boiler (11), the sludge storage is predrying The sludge outlet connection drying drum (8) of unit, the recirculation water steam outlet connection waste heat boiler (11) of drying drum (8).
4. a kind of processing system of carbonaceous solids discarded object as claimed in claim 3, it is characterised in that:The combustion gas burn with Waste heat recovery unit includes incinerator (21), the drying gas floss hole connection incinerator (21) of the drying drum (8), the waste heat Low-temperature flue gas outlet connection air preheater (9) high temperature side entrance of boiler (11), air preheater (9) low temperature side entrance is Air intake, air preheater (9) low temperature side outlet connection incinerator (21).
5. a kind of processing system of carbonaceous solids discarded object as claimed in claim 4, it is characterised in that:The pyrolyzing sludge list Member includes pyrolysis reactor (22), and the sludge outlet of the drying drum (8) connects the reactant entrance of pyrolysis reactor (22), The flue gas discharge opening of the incinerator (21) point two-way, connects the thermal source inlet of pyrolysis reactor (22), another road and heat all the way The thermal source outlet flue gas of solution reactor (22) sends into the waste heat boiler (11) by removing waste heat boiler pipeline (19) together;Pyrolysis The thermal source outlet of reactor (22) connects the waste heat boiler (11);The pyrolysis gaseous state product outlet of pyrolysis reactor (22) connects Cyclone separator (27) is connect, the gas discharge outlet of cyclone separator (27) connects the incinerator (21);Pyrolysis reactor (22) Pyrolysis solid product outlet connecting secondary recycling equipment.
6. a kind of processing system of carbonaceous solids discarded object as claimed in claim 5, it is characterised in that:Also include working as system energy When amount can not realize self-balancing, the energy auxiliary unit of energy is provided as auxiliary thermal source.
7. a kind of processing system of carbonaceous solids discarded object as claimed in claim 6, it is characterised in that:The energy auxiliary is single Member include coke pyrolysis reactor (29), coke pyrolysis reactor (29) connection described in remove exhaust-heat boiler flue gas pipeline (19);It is burnt The coke pyrolysis gas outlet of charcoal pyrolysis reactor (29) connects the incinerator (21).
8. a kind of processing method of carbonaceous solids discarded object, it is characterised in that:Using as described in any one of claim 5~7 The processing system of carbonaceous solids discarded object, step is:
Step 1:The inner sludge of warehouse of sludge (2) is promoted in sludge tank (4) by bucket elevator (3), the sludge in sludge tank (4) Emchanically centrifugal separation dewaterer (5) dehydration is sent into, water content in sludge is down to less than 60% from 80%~90%;
Step 2:Sludge feeding drying drum (8) after dehydration is dried, and the moisture in sludge is reduced to less than 25%;
Step 3:Dried sludge feeding pyrolysis reactor (22) carries out most of organic matter in pyrolytic reaction, removing sludge and waved Hair point;The residue of pyrolytic reaction generation goes secondary utilization by water Quench;
Step 4:Feeding incinerator (21) is burned after the pyrolysis gas ash disposal of pyrolytic reaction generation, is burned the heat smoke produced and is gone pyrolysis Reactor (22) removes waste heat boiler (11) as indirect type heat exchange thermal source, the partial fume after pyrolysis reactor (22) outflow, For producing hot water and steam (17);
Step 5:Drying drum (8) uses the hot water and steam (17) to carry out indirect type drying to sludge for thermal source, and drying drum (8) goes out The backflow water vapour feeding waste heat boiler (11) come;It is empty that the flue gas that waste heat boiler (11) is produced delivers to air preheater (9) heating Gas, delivers to incinerator (21) burning after air themperature lifting.
9. a kind of processing method of carbonaceous solids discarded object as claimed in claim 8, it is characterised in that:
The operation temperature of the drying drum (8) is 140~160 DEG C;
Pyrolysis reactor (22) operation temperature is 550~650 DEG C;
The operation temperature of the incinerator (21) is 900~1100 DEG C;
The incinerator (21) burns the heat smoke produced and removes pyrolysis reactor (22) as indirect type heat exchange thermal source, the part cigarette The temperature that gas flows out from pyrolysis reactor (22) is 650~750 DEG C;
The pressure of the hot water and steam (17) of the waste heat boiler (11) is that 0.5~0.8MPa, temperature are 150~200 DEG C;
What the waste heat boiler (11) produced delivers to the flue-gas temperature of air preheater (9) for 350~450 DEG C;
The hot air temperature for delivering to incinerator (21) of air preheater (9) outlet is more than 300 DEG C.
10. a kind of processing method of carbonaceous solids discarded object as claimed in claim 8, it is characterised in that:When sludge calorific value is low When the pyrolysis gas of enough calorific values can not be produced by pyrolyzing sludge to system, incinerator combustion product gases temperature and flow do not reach dry Total amount of heat needed for dry and pyrolysis, now starts energy auxiliary unit and provides supplemental heat.
CN201710132977.2A 2017-03-07 2017-03-07 A kind of processing system and method for carbonaceous solids discarded object Pending CN106938881A (en)

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CN107721112A (en) * 2017-11-21 2018-02-23 湖北加德科技股份有限公司 Municipal sludge desiccation pyrolytic gasification is controlled oneself CIU
CN107940468A (en) * 2017-12-16 2018-04-20 江西正拓新能源科技股份有限公司 A kind of waste recovery systems of graphite cathode material
CN108249720A (en) * 2018-03-13 2018-07-06 山东金孚环境工程有限公司 A kind of method that mechanical dehydration coupling desiccation pyrolysis prepares sludge carbon
CN108409082A (en) * 2018-04-10 2018-08-17 广东国阳动力环保股份有限公司 A kind of sludge dewatering and harmlessness disposing group technology
CN109485228A (en) * 2018-12-19 2019-03-19 福建中庚环境技术有限公司 A kind of synergic processing process that sludge is combined with rubbish
CN109945210A (en) * 2019-02-01 2019-06-28 九洲环境科技(天津)有限公司 A kind of sludge object with heat energy recycle mutually separates Equipment for Heating Processing and method
CN112879924A (en) * 2021-02-08 2021-06-01 北京凯盛建材工程有限公司 Sludge treatment system and treatment method
CN114538728A (en) * 2022-04-19 2022-05-27 北京汇潮云集科技有限公司 Sludge treatment system and sludge treatment method
CN114838342A (en) * 2022-05-06 2022-08-02 西安交通大学 Coal gangue grading quality-divided pyrolysis decarbonization and waste heat gradient utilization system and operation method
CN115403231A (en) * 2022-09-01 2022-11-29 昆明明书科技有限公司 Flexible mummification production line of super supercritical low carbon heat source of mud
CN116948667A (en) * 2023-08-21 2023-10-27 武汉天源环保股份有限公司 Carbonization anaerobic pyrolysis process and system for solid waste

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CN107721112A (en) * 2017-11-21 2018-02-23 湖北加德科技股份有限公司 Municipal sludge desiccation pyrolytic gasification is controlled oneself CIU
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CN108249720B (en) * 2018-03-13 2020-06-16 山东金孚环境工程有限公司 Method for preparing sewage peat by mechanical dehydration coupled drying pyrolysis
CN108249720A (en) * 2018-03-13 2018-07-06 山东金孚环境工程有限公司 A kind of method that mechanical dehydration coupling desiccation pyrolysis prepares sludge carbon
CN108409082A (en) * 2018-04-10 2018-08-17 广东国阳动力环保股份有限公司 A kind of sludge dewatering and harmlessness disposing group technology
CN109485228A (en) * 2018-12-19 2019-03-19 福建中庚环境技术有限公司 A kind of synergic processing process that sludge is combined with rubbish
CN109945210A (en) * 2019-02-01 2019-06-28 九洲环境科技(天津)有限公司 A kind of sludge object with heat energy recycle mutually separates Equipment for Heating Processing and method
CN109945210B (en) * 2019-02-01 2024-04-05 九洲环境科技(天津)有限公司 Sludge phase separation heat treatment equipment and method with heat energy recycling function
CN112879924A (en) * 2021-02-08 2021-06-01 北京凯盛建材工程有限公司 Sludge treatment system and treatment method
CN114538728A (en) * 2022-04-19 2022-05-27 北京汇潮云集科技有限公司 Sludge treatment system and sludge treatment method
CN114838342A (en) * 2022-05-06 2022-08-02 西安交通大学 Coal gangue grading quality-divided pyrolysis decarbonization and waste heat gradient utilization system and operation method
CN115403231A (en) * 2022-09-01 2022-11-29 昆明明书科技有限公司 Flexible mummification production line of super supercritical low carbon heat source of mud
CN116948667A (en) * 2023-08-21 2023-10-27 武汉天源环保股份有限公司 Carbonization anaerobic pyrolysis process and system for solid waste

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