CN110157455A - Continous way rubbish anoxybiotic pyrolysis installation, refuse pyrolysis coupling station boiler power generator and technique - Google Patents
Continous way rubbish anoxybiotic pyrolysis installation, refuse pyrolysis coupling station boiler power generator and technique Download PDFInfo
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- CN110157455A CN110157455A CN201910413942.5A CN201910413942A CN110157455A CN 110157455 A CN110157455 A CN 110157455A CN 201910413942 A CN201910413942 A CN 201910413942A CN 110157455 A CN110157455 A CN 110157455A
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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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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/04—Using steam or condensate extracted or exhausted from steam engine plant for specific purposes other than heating
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Abstract
The invention belongs to technical field of waste treatment more particularly to a kind of continous way rubbish anoxybiotic pyrolysis installations, refuse pyrolysis coupling station boiler power generator and technique.Continous way rubbish anoxybiotic pyrolysis installation includes feeder unit, fluidized bed pyrolysis furnace body, gas-solid separating device, dust-extraction unit, combustion gas air-introduced machine, material-returning device and material return blower.It is further included station boiler, steam turbine and generator that refuse pyrolysis, which couples station boiler power generator in addition to including refuse pyrolysis plant all devices,.The device of the invention and technique have many advantages, such as whole anoxybiotic, without dioxin, pyrolysis combustion gas utilization efficiency is high, has no adverse effects to boiler and flying dust.
Description
Technical field
The invention belongs to technical field of waste treatment more particularly to a kind of devices for coupling refuse pyrolysis with power station power generation
And technique.
Background technique
In recent years, with the improvement of people's living standards, the quickening of urbanization process, the discharge amount of municipal refuse increase rapidly
Add, various garbage processing technique comes into being.Wherein, the big, volume reduction with garbage disposal scale due to waste incineration and generating electricity technology
The features such as rate is big, energy utilization efficiency is high becomes the mainstream technology of current garbage disposal.But rubbish during the burning process can
Generate a large amount of dioxin, dioxin is strong carcinogen, in the extremely difficult degradation of nature, and dioxin due to property it is special, nothing
Method realizes on-line monitoring, and testing cost is expensive, causes the supervision of burning power plant dioxin emission to exist in name only, separately
Outer waste incineration and generating electricity can generate a large amount of chlorinated products and flying dust, to generate to Power Station Boiler Heating Surface and flying dust quality bad
It influences, or even influences the safe and stable operation of coal unit.In comparison, refuse pyrolysis technology is a kind of more environmentally friendly rubbish
Rubbish treatment process, but such pyrolysis installation equally exists many limitations, for example stability is poor, efficiency is lower, equipment amplification is tired
Difficulty etc..
At the same time, with the reform and adjustment of national energy structure, the annual utilization hours of domestic coal-burning power plant are innovated repeatly
It is low, serious resources idle is caused, so biomass pyrogenation gasification coupling station boiler generation technology is also field of garbage disposal
One of new trend.
Summary of the invention
The technical problem to be solved by the present invention is to mention insufficient and defect to overcome, provide in background above technology
A kind of continous way rubbish anoxybiotic pyrolysis installation, including feeder unit, fluidized bed pyrolysis furnace body, gas-solid separating device, dedusting dress
It sets, combustion gas air-introduced machine, material-returning device and material return blower；The fluidized bed pyrolysis furnace body feed inlet is connected with feeder unit,
The gas outlet end of fluidized bed pyrolysis furnace body is connected with the gas-solid separating device arrival end, fluidized bed pyrolysis furnace body
Returning charge arrival end in bottom is connected with the material-returning device；The bottom solid outlet end of the gas-solid separating device and the returning charge
Device is connected, and the gas outlet end of the gas-solid separating device is connected with the arrival end of the dust-extraction unit；Dust-extraction unit
Gas outlet end be connected with the combustion gas air-introduced machine；The combustion gas air-introduced machine passes through material return blower and first via pipeline and institute
It states material-returning device to be connected, be connected by the second road pipeline with the gas access end of fluidized bed pyrolysis furnace body bottom.
The main thought of the technical solution by gas-solid separating device, dust-extraction unit and is returned by combustion gas air-introduced machine and pipeline
Material device, fluidized bed pyrolysis furnace body are connected, and fluidizing agent, the material-returning device that fluidized bed pyrolysis furnace body is needed need
High-temperature flue gas or high-temperature flue gas and the gaseous mixture of combustion gas after the fuel gas buring generated in returning charge medium device replace, simultaneously
There is provided heat source for system pyrolysis, realize and anoxybiotic pyrolysis is carried out to rubbish using fluidized bed class equipment, prevented oxygen and entered be
System is internal, so as to avoid the generation of dioxin during garbage utilization, while compared to conventional spam pyrolysis plant for,
Be pyrolyzed it is more efficient, system operation it is more stable；Dust-extraction unit is arranged simultaneously can collect not by gas-solid separating device separation
Carbon residue.
As a preferred embodiment of the above technical solution, fluidized bed pyrolysis furnace body bottom is taper.The reason of being designed at this
It is that the fluidizing agent of the invention used for the flue gas or gaseous mixture after fuel gas buring, so tolerance slightly has deficiency, and will flow
Changing bed pyrolysis oven body bottom portion to be designed as taper is to realize that rubbish is good in furnace to improve pyrolysis oven bottom fluidization speed
Fluidisation.
As a preferred embodiment of the above technical solution, the positive pressure feeder unit includes raw material feed bin, level-one hopper, second level material
Bucket, reducing pressure feeding spiral；The raw material feed bin, level-one hopper, second level hopper, reducing pressure feeding spiral are from top to bottom in order successively
It is connected, the raw material feed bin and level-one hopper junction are provided with 1# sealing valve；The junction of level-one hopper and second level hopper
It is provided with 2# sealing valve；Level-one hopper is also connected with relief valve, 1# equalizer valve, high-order level-sensing device and low level level-sensing device, second level material
Bucket is also connected with 2# equalizer valve and second level hopper pressure table, and the reducing pressure feeding spiral is set with fluidized bed pyrolysis furnace body junction
It is equipped with water-cooling jacket, relief valve is connect with pressure release surge tank.
Above-mentioned positive pressure feeder unit can be real by three hoppers of setting, three sealing valves and a high position, low level level-sensing device
The automatic continuous charging of existing device, while by being filled with inert gas and being arranged that there are two equalizer valves and reducing pressure feeding spiral to protect
The positive pressure inside feeder unit is demonstrate,proved, avoids air from entering inside device, while being also prevented from fluidized bed pyrolysis furnace body internal gas
Anti-channeling enters in feeder unit.
As a preferred embodiment of the above technical solution, it between the gas-solid separating device and combustion gas air-introduced machine, is connected in turn
Gas heat-exchanger, dry type chlorine purifier and high temperature filtration device, the gas heat-exchanger gas access end and gas-solid separating device gas
Outlet end is connected, which is connected with combustion gas air-introduced machine.
The purpose that gas heat-exchanger is arranged is to reduce fuel gas temperature, conducive to follow-up system combustion gas dechlorination and fuel gas transmission.
High temperature filtration device and dry type chlorine purifier, which is arranged, can collect in the flying dust generated during refuse pyrolysis and removing combustion gas
Chlorine reduces the flying dust and chlorinated products for going to station boiler system, to avoid to Power Station Boiler Heating Surface and boiler fly ash
Quality generates adverse effect.
As a preferred embodiment of the above technical solution, second between the combustion gas air-introduced machine and the fluidized bed pyrolysis furnace body
Gas combustion chamber is additionally provided on the pipeline of road.
The purpose that gas combustion chamber is arranged is that the Some gases generated to system burn, by generated heat
It is transported in fluidized bed pyrolysis furnace body and material-returning device, the pyrolysis for rubbish in furnace provides heat, to realize in isolating oxygen
The stable operation of fluidized bed pyrolysis furnace body under conditions of gas.
The high-temperature flue gas or high-temperature fuel gas generated after adiabatic combustion Indoor Combustion is conveyed as a preferred embodiment of the above solution,
Pipeline with flue gas gaseous mixture is internal insulation structure.
Gas combustion chamber is heat insulating construction as a preferred embodiment of the above solution, be may be designed as with fluidized bed pyrolysis furnace body
Integral structure.
The present invention also provides a kind of continous way rubbish anoxybiotic pyrolysis coupling station boiler power generator, including appoint among the above
Continous way rubbish anoxybiotic pyrolysis installation and station boiler, steam turbine, generator in technical solution of anticipating, the station boiler
It is connected by gas pipeline with combustion gas air-introduced machine, is connected by jet chimney with steam turbine；The steam turbine and generator
It is connected.
The advantage of the optimal technical scheme is to can make full use of the high-temp combustion environment of station boiler, efficiency power generation dress
It sets, perfect environmental protection facility, realizes efficient, the environmentally friendly utilization of refuse pyrolysis combustion gas.As a preferred embodiment of the above technical solution, described
Steam turbine also passes through pipeline and is connected with the heat transferring medium entrance of gas heat-exchanger.The purpose designed at this is, utilizes steamer
Machine steam extraction is pyrolyzed the combustion gas of generation to cool down, and tar is avoided to be precipitated in gas heat-exchanger；Meanwhile for cooling steam through firing
After the heating of gas heat exchanger, and its thermal energy can be utilized again as the case may be, improve the energy utilization efficiency of device.
As a preferred embodiment of the above technical solution, it is provided with gas outlet valve on the pressure release surge tank, the gas vent
Valve at pipeline and station boiler fuel gas buring by being connected.The advantage designed at this is to discharge in charging gear
Out have the gas of pollution be introduced into station boiler burning together processing, improve the feature of environmental protection of device.
Station boiler power generator is coupled according to above-mentioned continous way refuse pyrolysis, the present invention proposes that a kind of continous way rubbish is exhausted
Oxygen pyrolysis coupling station boiler electrification technique, comprising the following steps:
(1) first fluidized bed pyrolysis furnace body is added through a feeder unit in garbage waste and bed material needed for preparatory technology, bed material,
Fluidized bed pyrolysis furnace body is added through feeder unit after pretreatment in garbage waste；
(2) garbage waste is pyrolyzed after fluidized bed pyrolysis furnace body is added, and generates rubbish carbon residue and combustion gas, and combustion gas carries
Carbon residue enter a gas-solid separating device, described in solid material after being separated by gas-solid separating device is returned to by a material-returning device
Fluidized bed pyrolysis furnace body the reaction was continued, not by gas-solid separating device separate carbon residue be collected by a dust-extraction unit；
Combustion gas is sent to gas heat-exchanger by pipeline；
(3) in removing flue gas chlorine is sent into a dry type chlorine purifier after combustion gas is cooling in the gas heat-exchanger, then through height
Warm filter goes to combustion gas air-introduced machine after further removing the flying dust carried in combustion gas；
(4) combustion gas is handled through combustion gas air-introduced machine pressurization tri- tunnel Hou Fen: being sent to gas combustion chamber burning all the way, is generated
High-temperature fuel gas or high-temperature flue gas and the gaseous mixture of combustion gas be sent to fluidized bed pyrolysis furnace body and provide heat source cocurrent for refuse pyrolysis
Change medium；It is sent to combustion gas coupling station boiler generator unit all the way and carries out coupling combustion power generation；All the way after material return blower is pressurizeed
The material-returning device is sent to as returning charge medium；
In the coupling combustion power generation process, combustion gas is first passed through a station boiler coupling combustion and generates steam, and pushes one
Steam turbine power generation extracts steam from steam turbine and is sent to the cooling combustion gas of gas heat-exchanger, completes the steam of heat exchange according to the actual situation
Flexible utilization.
As the preferred of above-mentioned technique, the device of feeder unit described in step (1) include: raw material feed bin, level-one hopper,
Second level hopper and reducing pressure feeding spiral；The raw material feed bin, level-one hopper, second level hopper, reducing pressure feeding spiral are pressed from top to bottom
Sequence, which is sequentially connected, to be connect；
When feed:
A. the raw material feed bin is first added raw materials into, it is spare；
B. when the raw material material position in level-one hopper is lower, the low level level-sensing device being arranged by level-one feed hopper bottom is expected
The low alarm in position, is then shut off the 2# sealing valve for connecting the level-one hopper and second level hopper；
C. open the relief valve that is arranged on level-one hopper, level-one hopper pressure release to normal pressure, open connection raw material feed bin and
The 1# sealing valve of level-one hopper send raw material to level-one hopper from raw material feed bin；
D. the alarm of material position height is carried out by the high-order level-sensing device being arranged at the top of level-one hopper, is then shut off 1# sealing valve, beats
The 1# equalizer valve set on level-one hopper is opened up, closes 1# equalizer valve when being pressurized to slightly above second level hopper pressure；
E. 2# sealing valve is opened, raw material is sent into second level hopper by level-one hopper, it then will be former by reducing pressure feeding spiral
Material is delivered to fluidized bed pyrolysis furnace body；
F. above-mentioned steps are repeated when the low level level-sensing device is alarmed.
As the preferred of above-mentioned technique, the positive pressure feeder unit is pressurized operation, is sealed using inert gas
And pressurising；Required bed material is added also by positive pressure feeder unit, and 2# equalizer valve is kept when the positive pressure feeder unit day-to-day operation
It is normally opened, maintain second level hopper pressure to be higher than fluidized bed pyrolysis furnace body pressure, pressure difference maintains 0-1000pa, and 2# equalizer valve is by flowing
Change the pressure difference chain control between bed pyrolysis furnace body and second level hopper, its aperture is automatically adjusted according to pressure difference.
As the preferred of above-mentioned technique, 300-450 DEG C of vapor (steam) temperature of the extracted steam from turbine output, the dry type chlorine purifier
Reaction zone temperature >=320 DEG C, air distribution excess air coefficient≤1 of gas combustion chamber, fuel gas buring room temperature are 800-1200 DEG C.
As the preferred of above-mentioned technique, the broken biologic garbage, organic solid waste, medical waste granularity≤
10cm, moisture content≤40%；Pressure is -500-2000pa at fluidized bed pyrolysis furnace body feed(raw material)inlet；Fluidized bed pyrolysis furnace sheet
Body pyrolysis temperature is 500-800 DEG C；Gas flow rate is 4-15m/s in fluidized bed pyrolysis furnace body；The gas-solid separating device pair
Separative efficiency≤25% of recycle stock partial size < 0.8mm；The bed material partial size is 0.5-2.5mm；Combustion gas in gas heat-exchanger
Outlet temperature is 350-500 DEG C.
Compared with the prior art, the advantages of the present invention are as follows:
1, the present invention selects recirculating fluidized bed pyrolysis oven to be pyrolyzed rubbish, the fuel gas buring generated using refuse pyrolysis
The fluidizing agent and heat source of high-temperature fuel gas and smoke mixture or high-temperature flue gas as pyrolysis oven afterwards, without drawing from external system
Enter air；Meanwhile being fed using continous way positive pressure feeder unit, it is sealed using inert gas and pressurising.The two combines real
Showed and the anoxybiotic of rubbish be pyrolyzed using recirculating fluidized bed, generated during rubbish heat utilization without dioxin, equipment operation efficiently,
Stablize.
2, the present invention is collected the flying dust generated during refuse pyrolysis using high-temperature filter, de- using dry type chlorine purifier
Except the chlorine in combustion gas, reduce the flying dust and chlorinated products for going to station boiler system, to avoid to Power Station Boiler Heating Surface
And boiler fly ash quality generates adverse effect.
3, station boiler coupling combustion is sent in the combustion gas that present system generates, and makes full use of the high temperature that station boiler is stable
Burning situation, efficient generating apparatus, perfect environmental protecting device realize efficient, the environmentally friendly utilization of refuse pyrolysis combustion gas.
4, the present invention realizes the cooling of biological fuel gas using extracted steam from turbine, it is therefore prevented that analysis of the tar in gas heat-exchanger
Out, while combustion gas sensible heat is recycled, the steam for completing heat exchange can be according to practical flexible utilization.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of continous way rubbish anoxybiotic pyrolysis coupling station boiler power generator of the present invention.
Marginal data:
1, relief valve；2,1# equalizer valve；3,2# equalizer valve；4, raw material feed bin；5,1# sealing valve；6, high-order level-sensing device；7,
Level-one hopper；8, low level level-sensing device；9,2# sealing valve；10, second level hopper；11, second level hopper pressure table；12,3# sealing valve；
13, pyrolysis furnace feed inlet pressure gauge；14, reducing pressure feeding spiral；15, water-cooling jacket；16, fluidized bed pyrolysis furnace body；17, gas-solid
Separator；18, dust-extraction unit；19, gas heat-exchanger；20, dry type chlorine purifier；21, high temperature filtration device；22, combustion gas air inducing
Machine；23, material return blower；24, gas combustion chamber；25, material-returning device；26, flue gas processing device；27, boiler induced-draft fan；28, cigarette
Chimney；29, station boiler；30, steam turbine；31, generator；32, pressure release surge tank.
Specific embodiment
To facilitate the understanding of the present invention, the present invention is made below in conjunction with Figure of description and preferred embodiment more complete
Face meticulously describes, but the protection scope of the present invention is not limited to the following specific embodiments.
It should be strongly noted that when to be described as " be fixed on, be fixed in, be connected to or be connected to " another for a certain element
When on element, it can be directly fixed, affixed, connection or is connected on another element, be also possible to by connecting among other
Fitting is indirectly fixed, affixed, connects or is connected on another element.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art
It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention
Protection scope.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city
Field is commercially available or can be prepared by existing method.
Embodiment 1:
If Fig. 1 refuse pyrolysis coupling station boiler generating device structure schematic diagram shown in, the device include relief valve 1,
1# equalizer valve 2,2# equalizer valve 3, raw material feed bin 4,1# sealing valve 5, high-order level-sensing device 6, level-one hopper 7；Low level level-sensing device 8,2#
Sealing valve 9, second level hopper 10, second level hopper pressure table 11,3# sealing valve 12, pyrolysis furnace feed inlet pressure gauge 13, reducing feed
Spiral 14, water-cooling jacket 15, fluidized bed pyrolysis furnace body 16, gas-solid separating device 17, dust-extraction unit 18, gas heat-exchanger 19,
Dry type chlorine purifier 20, high temperature filtration device 21, combustion gas air-introduced machine 22, material return blower 23, gas combustion chamber 24, material-returning device 25,
Flue gas processing device 26, boiler induced-draft fan 27, chimney 28, station boiler 29, steam turbine 30, generator 31, pressure release surge tank 32.
Wherein raw material feed bin 4,1# sealing valve 5, level-one hopper 7,2# sealing valve 9, second level hopper 10,3# sealing valve 12, different
Diameter pressure feeding spiral 14 is sequentially connected in order from top to bottom to be connect, and level-one hopper 7 is also connected with relief valve 1,1# equalizer valve 2, a high position
Level-sensing device 6, low level level-sensing device 8, second level hopper 10 are also connected with 2# equalizer valve 3 and second level hopper pressure table 11, and reducing is fed spiral shell
Rotation 14 is provided with water-cooling jacket 15 with the continuous place of fluidized bed pyrolysis furnace body 16, and relief valve 1 is connect with pressure release surge tank 32, pressure release
32 gas vent of surge tank is connected with station boiler 29.Fluidized bed pyrolysis furnace body 16 also respectively with gas-solid separating device 17,
Fluidized air blower, gas combustion chamber 24 are connected with material-returning device 25, and 17 bottom of gas-solid separating device is connected with material-returning device 25,
Top is connected with dust-extraction unit 18, and gas heat-exchanger 19 is connected with dust-extraction unit 18 and steam turbine 30, dry type chlorine purifier 20
It is connected with gas heat-exchanger 19 and high temperature filtration device 21, high temperature filtration device 21 is distinguished by combustion gas air-introduced machine 22 and pipeline
It is connected with station boiler 29, gas combustion chamber 24 and material return blower 23.Station boiler 29 respectively with flue gas processing device 26 and
Steam turbine 30 is connected, and flue gas processing device 26 is also connected by boiler induced-draft fan 27 with chimney 28, steam turbine 30 and power generation
Machine 31 is connected with gas heat-exchanger 19.
Embodiment 2:
It is quasi- using a kind of continous way rubbish anoxybiotic pyrolysis coupling station boiler electrification technique of device described in embodiment 1
Standby required raw material and bed material, bed material partial size 0.5-2mm are first added in fluidized bed pyrolysis furnace body 16 through feeder unit；Selected original
Material is house refuse, and spare, granularity≤5cm of raw material, moisture content after pretreatment in raw material feed bin 4 are added after being pre-processed
≤ 25%.When low level level-sensing device 8 is alarmed, 2# sealing valve 9 is closed；Then relief valve 1 is opened, 7 pressure release of level-one hopper is beaten to normal pressure
1# sealing valve 5 is opened, raw material is sent from raw material feed bin 4 to level-one hopper 7；1# sealing valve is closed after the alarm of high-order level-sensing device 6
5,1# equalizer valve 2 is opened, inert gas is filled with, level-one hopper 7 starts pressurising, pass when being pressurized to slightly above 10 pressure of second level hopper
Close 1# equalizer valve 2；Then 2# sealing valve 9 is opened, raw material is sent by level-one hopper 7 to second level hopper 10, is then given by reducing
Expect spiral 14 by feedstock transportation into fluidized bed pyrolysis furnace body 16.Wherein, the inert gas being filled with is nitrogen.Reducing is fed spiral shell
Rotation 14 maintains 200Pa, second level hopper 10 and fluidized bed pyrolysis furnace body 16 with 16 junction pressure of fluidized bed pyrolysis furnace body
The difference of pressure maintains 100Pa.Gas after pressure release is sent to boiler burning after surge tank buffers.
Rubbish is pyrolyzed after fluidized bed pyrolysis furnace body 16 is added, and pyrolysis in-furnace temperature is 650 DEG C, fluidized bed pyrolysis furnace
Gas flow rate is 4.5m/s in ontology 16, and pyrolysis generates rubbish carbon residue and combustion gas, and the carbon residue that combustion gas carries is by gas-solid separating device
After 17 collect, returning to fluidized bed pyrolysis furnace body 16 by material-returning device 25, the reaction was continued, and gas-solid separating device 17 is to material grain
Separative efficiency of the diameter less than 0.8mm is 20%, is not collected, is fired by dust-extraction unit 18 by the carbon residue that gas-solid separating device 17 is collected
Gas is sent to gas heat-exchanger 19 after dust-extraction unit 18.
Chlorine in removing flue gas, dry type are sent into dry type chlorine purifier 20 in combustion gas after being cooled to 400 DEG C in gas heat-exchanger 19
Temperature is 370 DEG C in chlorine purifier 20, then goes to combustion gas after high temperature filtration device 21 further removes the flying dust carried in combustion gas
Air-introduced machine 22；Combustion gas is handled through the pressurization of combustion gas air-introduced machine 22 tri- tunnel Hou Fen: it is sent to gas combustion chamber 24 all the way and burns, control
24 inner air-distributing excess coefficient of gas combustion chamber is 0.9, and temperature is 950 DEG C in gas combustion chamber 24, the high-temperature fuel gas for generation of burning
Fluidized bed pyrolysis furnace body 16, which is sent to, with flue gas provides heat source, fluidizing agent for refuse pyrolysis；Be sent to all the way station boiler 29 into
The power generation of row coupling combustion；Material-returning device 25 is sent to as returning charge medium after the pressurization of material return blower 23 all the way.
Combustion gas produces steam in 29 coupling combustion of station boiler, and pushing turbine 30 generates electricity, and extracts 350 DEG C from steam turbine 30
Steam be sent to the cooling combustion gas of gas heat-exchanger 19, the vapor (steam) temperature after completing heat exchange is 400 DEG C, is sent into steam reheat system and uses
It generates electricity in steam turbine 30, the flue gas that station boiler 29 generates passes through boiler induced-draft fan 27 after the processing of flue gas processing device 26
It is discharged by chimney 28.
Embodiment 3:
It is quasi- using a kind of continous way rubbish anoxybiotic pyrolysis coupling station boiler electrification technique of device described in embodiment 1
Standby required raw material and bed material, selected raw material are medical waste, above-mentioned raw materials are sorted, be crushed etc. raw material is added after pre-processing
Spare in feed bin 4, the granularity of raw material is≤8cm after being crushed, and moisture content is≤30%.Bed material partial size 0.5-2.5mm.Low level material
When 8 alarm of meter of position, 2# sealing valve 9 is closed；Then relief valve 1 is opened, 1# sealing valve 5 is opened in 7 pressure release of level-one hopper to normal pressure,
Raw material is sent from raw material feed bin 4 to level-one hopper 7；1# sealing valve 5 is closed after the alarm of high-order level-sensing device 6, opens 1# pressurising
Valve 2 is filled with inert gas, and level-one hopper 7 starts pressurising, closes 1# equalizer valve 2 when being pressurized to slightly above 10 pressure of second level hopper；
Then 2# sealing valve 9 is opened, raw material is sent by level-one hopper 7 to second level hopper 10, it then will be former by reducing pressure feeding spiral 14
Material is delivered in fluidized bed pyrolysis furnace body 16.Wherein, the inert gas being filled with is nitrogen, reducing pressure feeding spiral 14 and fluidized bed
Pyrolysis 16 junction pressure of furnace body maintains 400Pa, and the difference of 16 pressure of second level hopper 10 and fluidized bed pyrolysis furnace body maintains
In 250Pa.Gas after pressure release is sent to boiler burning after surge tank buffers.
Rubbish is pyrolyzed after fluidized bed pyrolysis furnace body 16 is added, and pyrolysis in-furnace temperature is 700 DEG C, and pyrolysis generates rubbish
Carbon residue and combustion gas return to fluidized bed pyrolysis by material-returning device 25 after the carbon residue that combustion gas carries is collected by gas-solid separating device 17
The reaction was continued for furnace body 16, and separative efficiency of the gas-solid separating device 17 to material particular diameter less than 0.8mm is 25%, not by gas-solid point
It is collected from the carbon residue that device 17 is collected by dust-extraction unit 18, gas heat-exchanger 19 is sent in combustion gas after dust-extraction unit 18.
Chlorine in removing flue gas, dry type are sent into dry type chlorine purifier 20 in combustion gas after being cooled to 420 DEG C in gas heat-exchanger 19
Temperature is 380 DEG C in chlorine purifier 20, then goes to combustion gas after high temperature filtration device 21 further removes the flying dust carried in combustion gas
Air-introduced machine 22；Combustion gas is handled through the pressurization of combustion gas air-introduced machine 22 tri- tunnel Hou Fen: it is sent to gas combustion chamber 24 all the way and burns, control
24 inner air-distributing excess coefficient of gas combustion chamber temperature in 0.8, gas combustion chamber 24 is 1000 DEG C, the high-temperature fuel gas for generation of burning
Fluidized bed pyrolysis furnace body 16, which is sent to, with flue gas provides heat source, fluidizing agent for refuse pyrolysis；Be sent to all the way station boiler 29 into
The power generation of row coupling combustion；Material-returning device 25 is sent to as returning charge medium after the pressurization of material return blower 23 all the way.
Combustion gas produces steam in 29 coupling combustion of station boiler, and pushing turbine 30 generates electricity, and extracts 400 DEG C from steam turbine 30
Steam be sent to the cooling combustion gas of gas heat-exchanger 19, the vapor (steam) temperature for completing heat exchange is 480 DEG C, is sent into steam reheat system and is used for
Steam turbine 30 generate electricity, station boiler 29 generate flue gas by flue gas processing device 26 processing after, by boiler induced-draft fan 27 by
Chimney 28 is discharged.
Claims (10)
1. a kind of continous way rubbish anoxybiotic pyrolysis installation, it is characterised in that: including feeder unit, fluidized bed pyrolysis furnace body
(16), gas-solid separating device (17), dust-extraction unit (18), combustion gas air-introduced machine (22), material-returning device (25) and material return blower (23)；
Fluidized bed pyrolysis furnace body (16) feed inlet is connected with feeder unit, the gas vent of fluidized bed pyrolysis furnace body (16)
End is connected with the gas-solid separating device (17) arrival end, the bottom returning charge arrival end of fluidized bed pyrolysis furnace body (16) and institute
Material-returning device (25) is stated to be connected；The bottom solid outlet end of the gas-solid separating device (17) and the material-returning device (25) phase
Connection, the gas outlet end of gas-solid separating device (17) are connected with the arrival end of the dust-extraction unit (18)；Dust-extraction unit
(18) gas outlet end is connected with the combustion gas air-introduced machine (22)；Combustion gas air-introduced machine (22) passes through material return blower (23) and the
Pipeline is connected with the material-returning device (25) all the way, passes through the gas of the second road pipeline and fluidized bed pyrolysis furnace body (16) bottom
Body arrival end is connected.
2. continous way rubbish anoxybiotic pyrolysis installation according to claim 1, it is characterised in that: the feeder unit includes original
Expect feed bin (4), level-one hopper (7), second level hopper (10), reducing pressure feeding spiral (14)；The raw material feed bin (4), level-one hopper
(7), second level hopper (10), reducing pressure feeding spiral (14) are sequentially connected in order connect from top to bottom, the raw material feed bin (4) and one
Grade hopper (7) junction is provided with 1# sealing valve (5)；It is close that the junction of level-one hopper (7) and second level hopper (10) is provided with 2#
It seals valve (9)；Level-one hopper (7) is also connected with relief valve (1), 1# equalizer valve (2), high-order level-sensing device (6) and low level level-sensing device
(8), second level hopper (10) is also connected with 2# equalizer valve (3) and second level hopper pressure table (11), the reducing pressure feeding spiral (14)
It is provided with water-cooling jacket (15) with fluidized bed pyrolysis furnace body (16) junction, relief valve (1) is connect with pressure release surge tank (32).
3. continous way rubbish anoxybiotic pyrolysis installation according to claim 1, it is characterised in that: in the gas-solid separating device
(17) between the combustion gas air-introduced machine (22), gas heat-exchanger (19), dry type chlorine purifier (20) and high temperature are also connected in turn
Filter device (21), gas heat-exchanger (19) the gas access end are connected with gas-solid separating device (17) gas outlet end, should
High temperature filtration device (21) gas outlet end is connected with combustion gas air-introduced machine (22).
4. continous way rubbish anoxybiotic pyrolysis installation described in any one of -3 according to claim 1, it is characterised in that: the combustion
Gas combustion chamber (24) are additionally provided on the second road pipeline between gas air-introduced machine (22) and fluidized bed pyrolysis furnace body (16).
5. a kind of continous way rubbish anoxybiotic pyrolysis coupling station boiler power generator, it is characterised in that: including in claim 1-4
Continous way rubbish anoxybiotic pyrolysis installation described in any one and station boiler (29), steam turbine (30) and generator (31),
The station boiler (29) is connected by gas pipeline with combustion gas air-introduced machine (22), and jet chimney and the steam turbine (30) are passed through
It is connected；The steam turbine (30) is connected with generator (31).
6. continous way rubbish anoxybiotic pyrolysis coupling station boiler power generator according to claim 5, it is characterised in that: described
It is also connected between gas-solid separating device (17) and combustion gas air-introduced machine (22) gas heat-exchanger (19), the steam turbine (30) passes through
Pipeline is connected with the gas heat-exchanger (19) heat transferring medium entrance.
7. a kind of continous way rubbish anoxybiotic pyrolysis coupling station boiler electrification technique, it is characterised in that: the technique includes following
Step:
(1) garbage waste and bed material needed for preparatory technology, bed material are first added a fluidized bed through a feeder unit and are pyrolyzed furnace body
(16), fluidized bed pyrolysis furnace body (16) are added through feeder unit after pretreatment in garbage waste；
(2) garbage waste is added the fluidized bed pyrolysis furnace body (16) and is pyrolyzed afterwards, generates rubbish carbon residue and combustion gas, combustion gas
The carbon residue of carrying enters a gas-solid separating device (17), passes through a returning charge by the solid material after gas-solid separating device (17) separation
Device (25) returns to the fluidized bed pyrolysis furnace body (16), and the reaction was continued, the carbon residue not separated by gas-solid separating device (17)
It is collected by a dust-extraction unit (18)；Combustion gas after separation is sent to a gas heat-exchanger (19) by pipeline；
(3) chlorine in removing flue gas is sent into a dry type chlorine purifier (20) after combustion gas is cooling in the gas heat-exchanger (19),
Combustion gas air-introduced machine (22) are gone to after high-temperature filter (21) further removes the flying dust carried in combustion gas again；
(4) combustion gas is handled through combustion gas air-introduced machine (22) pressurization tri- tunnel Hou Fen: it is sent to a gas combustion chamber (24) burning all the way,
It is refuse pyrolysis that the high-temperature fuel gas or high-temperature flue gas of generation and the gaseous mixture of combustion gas, which are sent to the fluidized bed pyrolysis furnace body (16),
There is provided heat source and as fluidizing agent；It is sent to combustion gas coupling station boiler generator unit all the way and carries out coupling combustion power generation；All the way
The material-returning device (25) are sent to as returning charge medium after material return blower (23) pressurization；
In the coupling combustion power generation process, combustion gas is passed through a station boiler (29) coupling combustion and generates steam, and pushes a vapour
Turbine (30) power generation extracts steam from steam turbine (30) and is sent to the gas heat-exchanger (19) cooling combustion gas.
8. continous way rubbish anoxybiotic pyrolysis coupling station boiler electrification technique according to claim 7, it is characterised in that: institute
Stating feeder unit in step (1) includes being sequentially connected the raw material feed bin (4) connect, level-one hopper (7), second level in order from top to bottom
Hopper (10) and reducing pressure feeding spiral (14)；
When feed:
A. the raw material feed bin (4) is first added raw materials into, it is spare；
B. when the raw material material position in level-one hopper (7) is lower, pass through the low level level-sensing device (8) of level-one hopper (7) bottom setting
The low alarm of material position is carried out, the 2# sealing valve (9) for connecting the level-one hopper (7) and second level hopper (10) is then shut off；
C. the relief valve (1) being arranged on level-one hopper (7) is opened, connection raw material material is opened in level-one hopper (7) pressure release to normal pressure
The 1# sealing valve (5) in storehouse (4) and level-one hopper (7) send raw material to level-one hopper (7) from raw material feed bin (4)；
D. the alarm of material position height is carried out by the high-order level-sensing device (6) being arranged at the top of level-one hopper (7), is then shut off 1# sealing valve
(5), the 1# equalizer valve (2) being arranged on level-one hopper (7) is opened, closes 1# when being pressurized to slightly above second level hopper (10) pressure
Equalizer valve (2)；
E. 2# sealing valve (9) are opened, raw material is sent into second level hopper (10) by level-one hopper (7), spiral shell is then fed by reducing
(14) are revolved by feedstock transportation to fluidized bed pyrolysis furnace body (16)；
F. above-mentioned steps are repeated when the low level level-sensing device (8) is alarmed.
9. continous way rubbish anoxybiotic pyrolysis coupling station boiler electrification technique according to claim 8, it is characterised in that: institute
Stating feeder unit is operation under positive pressure, is sealed using inert gas and pressurising；2# pressurising when the feeder unit day-to-day operation
Valve (3) maintains a normally open, and second level hopper (10) pressure is maintained to be higher than fluidized bed pyrolysis furnace body (16) pressure, and pressure difference maintains 0-
1000Pa, 2# equalizer valve (3) are by the pressure difference chain control between fluidized bed pyrolysis furnace body (16) and second level hopper, according to pressure difference
Automatically adjust its aperture.
10. continous way rubbish anoxybiotic pyrolysis coupling station boiler electrification technique according to claim 8, it is characterised in that:
Pressure is -500-2000Pa, fluidized bed pyrolysis furnace body (16) pyrolysis at fluidized bed pyrolysis furnace body (16) feed(raw material)inlet
Temperature is 500-800 DEG C；Fluidized bed pyrolysis furnace body (16) interior gas flow rate is 4-15m/s；The bed material partial size is 0.5-
3mm；Gas outlet temperature is 350-500 DEG C in the gas heat-exchanger (19)；Dry type chlorine purifier (20) reaction zone temperature
≥320℃；Air distribution excess air coefficient≤1 of the gas combustion chamber (24), gas combustion chamber's (24) temperature are 800-1200
℃。
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| CN201910413942.5A CN110157455B (en) | 2019-05-17 | 2019-05-17 | Continuous garbage anaerobic pyrolysis device, garbage pyrolysis coupling power generation device and technology |
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