CN109163330A - A kind of domestic garbage pyrolysis gasification process system, processing method and electricity generation system - Google Patents
A kind of domestic garbage pyrolysis gasification process system, processing method and electricity generation system Download PDFInfo
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- CN109163330A CN109163330A CN201811175928.8A CN201811175928A CN109163330A CN 109163330 A CN109163330 A CN 109163330A CN 201811175928 A CN201811175928 A CN 201811175928A CN 109163330 A CN109163330 A CN 109163330A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/02—Arrangements of regenerators
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of domestic garbage pyrolysis gasification process system, processing method and electricity generation systems, the processing system includes the rotary kiln gasification unit being sequentially communicated, fluidized bed reformer unit and clean unit, the rotary kiln gasification unit includes rotary kiln, and the feed end of the rotary kiln is equipped with feeding mechanism；The fluidized bed reformer unit includes the fluidized bed reformer being connected to rotary kiln discharge end, the pyrolysis gas outlet of the fluidized bed reformer is communicated with air preheater, the air inlet duct of air preheater is equipped with combustion fan, the air outlet slit pipe of air preheater is connected to fluidized bed reformer, and the pyrolysis gas outlet pipe of air preheater is connected to the air inlet of clean unit；Fluidized bed reformer unit is equipped with feeder；It further include pyrolysis gas cycling element.The present invention advantageously reduces the generation of consumer waste incineration pollutant, and non-environmental-pollution, energy efficiency of heating- utilization is high, more efficiently realization the innoxious of domestic rubbish disposal, minimizing, recycling.
Description
Technical field
The present invention relates to a kind of domestic garbage pyrolysis gasification process system, processing method and electricity generation systems, belong to life rubbish
Rubbish processing technology field.
Background technique
Currently, there is application of city life garbage high-moisture, complicated component, calorific value to change characteristic greatly, rubbish processing to be harmless
Mode mainly have Waste sorting recycle, landfill, compost, burning and pyrolytic gasification etc..According to the 2016 of State Statistics Bureau's publication
Year urban construction statistical yearbook, China year refuse production is about 200,460,000 tons, and wherein amount of landfill is 118,660,000 tons, burning amount
It is 73,780,000 tons, 4,290,000 tons of other treating capacities.
Consumer waste filling and embedding is still the major way of China's garbage disposal.Garbage loading embeading processing need to occupy a large amount of soil
Resource, harmful components will cause more serious pollution to environment such as air, water body, soil in rubbish.
Domestic garbage burning electricity generation can accomplish that garbage bulk is reduced as current fast-developing trash processing way
90%, Mass lost 70%-80%, the heat for burning generation can be used for generating electricity, can be realized the innoxious of garbage disposal, minimizing,
The purpose of recycling, but rubbish is to carry out violent oxidation under excess air conditions to burn, and flue gas output is big, contains in rubbish
The hypertoxic pollutant that chlorine organic will also generate dioxin etc. and be difficult to decompose, therefore, when incineration treatment of garbage need to configure complicated
Flue gas treating process system, operation processing cost is high, is relatively more suitable for that MSW heating value is higher, day garbage treatment quantity is compared with big city
The domestic garbage was harmlessly treated in town.
Domestic garbage pyrolysis gasification is that the renewable sources of energy new technology of fuel gas, the utilization of resources to rubbish are recycled from rubbish
Rate is high, and dioxin production quantity is low.At present refuse pyrolysis gasification technology mainly have fixed bed gasification technology, fluidized gasification technology,
The two-step method gasification technology of rotary kiln gasification technology, tubular reactor and fixed-bed gasification furnace.Wherein: fixed bed gasification technology is deposited
In the deficiency that pyrolysis gas tar content is high, refuse moisture content requirement is low.Fluidized gasification technology needs to carry out brokenly there are rubbish
The deficiencies of pretreatments such as broken, classification, pyrolysis gas tar content is high.There are clinker clinker ignition loss height, tar for rotary kiln gasification technology
The deficiencies of content is high.There is furnace rubbish and divided in the two-step method gasification technology of tubular reactor and fixed-bed gasification furnace
It picks, moisture content requires low, content of organics to require the deficiencies of high, system stability is poor.
In face of harmless treatment the shortcomings of the prior art of house refuse, researching and developing one kind can adapt to existing life
Work garbage property, without secondary pollution, giving energy by burning refuse efficiency of heating- utilization is high, system run all right technology is very important.
Summary of the invention
It is an object of the present invention to provide one kind to overcome deficiency existing for existing domestic garbage pyrolysis gasification technology
Domestic garbage pyrolysis gasification process system, processing method and electricity generation system, to reduce dioxin output, reduce pyrolysis gas tar
Amount reduces clinker clinker ignition loss, improves giving energy by burning refuse efficiency of heating- utilization, improves system run all right.
In order to solve the above-mentioned technical problem, technical scheme is as follows:
A kind of domestic garbage pyrolysis gasification process system, including be sequentially communicated rotary kiln gasification unit, fluidized bed reformer unit
And clean unit,
The rotary kiln gasification unit includes rotary kiln, and the feed end of the rotary kiln is equipped with feeding mechanism；
The fluidized bed reformer unit includes the fluidized bed reformer being connected to rotary kiln discharge end, the fluidized bed reformer
Pyrolysis gas outlet is communicated with air preheater, and the air inlet duct of air preheater is equipped with combustion fan, air preheater
Air outlet slit pipe is connected to fluidized bed reformer, and the pyrolysis gas outlet pipe of air preheater is connected to the air inlet of clean unit；
Fluidized bed reformer is equipped with the feeder for adding catalyst；
It further include pyrolysis gas cycling element, the air inlet of the pyrolysis gas cycling element is connected to the feed end of rotary kiln, pyrolysis gas
The gas outlet of cycling element is connected to the bottom of fluidized bed reformer.
The feeding mechanism includes trash repository and pusher, and the feed inlet of pusher is connected to trash repository, and pusher goes out
Material mouth is connected to the feed end of rotary kiln.
The feed end of the rotary kiln is higher than discharge end, gradient 1-5%.
The air preheater is accumulation of heat typed high temperature air preheater.
The fluidized bed reformer unit further includes high-temperature separator, and the air inlet and fluidized bed of the high-temperature separator are reformed single
The pyrolysis gas outlet connection of member, the gas outlet of high-temperature separator are connected to the pyrolysis gas inlet tube of air preheater, separating at high temperature
The discharge port of device is connected to fluidized bed reformer.
The pyrolysis gas cycling element includes interconnected dust-precipitator and circulating fan.
The clean unit includes successively interconnected bagroom and air-introduced machine.
A kind of electricity generation system, including domestic garbage pyrolysis gasification process system as described above and gas electricity generator, it is described
The gas outlet of clean unit is connected to gas electricity generator.In this way, electric energy can be converted by the chemical energy in pyrolysis gas, economy is brought
Benefit.
Preferably, air accumulator is equipped between the gas electricity generator and pyrolytic gasification processing system, to store pyrolysis gas.
A kind of domestic garbage pyrolysis gasification process method, using domestic garbage pyrolysis gasification process system as described above into
Row, includes the following steps:
House refuse is sent into rotary kiln by feeding mechanism, the revolving speed for controlling rotary kiln is 1-5r/min；
Rotary kiln is introduced by the part high temperature pyrolysis gas that pyrolysis gas cycling element generates fluidized bed reformer unit, so that revolution
Domestic garbage pyrolysis gasification in kiln, obtains Low Temperature Thermal and clinker；Period, the pressure at rotary kiln discharge end are -50Pa
~-200Pa；
Low Temperature Thermal is all passed through in fluidized bed reformer by pyrolysis gas cycling element as fluidized wind, during which, control
It is 8kPa ~ 15kPa that Low Temperature Thermal, which is passed through wind pressure,；
Clinker is directly discharged into fluidized bed reformer；
Catalyst is added into fluidized bed reformer by feeder, control fluidized bed reformer fire box temperature is 850-1050
DEG C, so that clinker and Low Temperature Thermal catalytic pyrolysis or combustion decomposition, obtain high temperature pyrolysis gas；Wherein, the additive amount of catalyst
2-8% for the house refuse quality being sent into rotary kiln；
After part high temperature pyrolysis gas are sent into air preheater, with air heat-exchange, pyrolysis gas is sent into clean unit processing, it will be pre-
Air after heat is sent into fluidized bed reformer.
Further, the temperature for controlling pyrolysis gas in air preheater pyrolysis gas outlet pipe is lower than 180 DEG C, air preheater
The temperature of air outlet slit inner air tube is greater than 550 DEG C.
By controlling combustion air intake, Low Temperature Thermal and clinker may make to carry out anoxic in fluidized bed reformer
Under the conditions of catalytic reforming cracking generate high temperature pyrolysis gas.
The catalyst includes at least one of lime stone and dolomite, it is preferable that the partial size of catalyst is less than 8mm.
In the present invention, the high temperature pyrolysis gas generated in fluidized bed reformer, a part enters rotary kiln, as rotary kiln heat
The heat source of gasification is solved, rotary kiln is supplied without additional energy source, is conducive to improve efficiency of energy utilization；In rotary kiln, pyrolysis gas with
Material forms reverse movement, is conducive to sufficiently exchange heat, and promotes pyrolytic gasification efficiency；Led in advance by the air of fluidized bed reformer
Air preheater preheating is crossed, high temperature pyrolysis gas waste heat is effectively utilized, and may make fluidized bed reformation reaction in furnace more abundant,
It reduces pyrolysis gas tar content, reduce clinker clinker ignition loss.
Compared with prior art, beneficial effects of the present invention are as follows:
(1) rotary kiln is carried out coupling utilization with fluidized bed reformer, is conducive to complicated component, moisture height, calorific value and changes greatly
House refuse carry out pyrolytic gasification harmless treatment, system is applied widely.
(2) house refuse reforms two-step pretreatment by pyrolytic gasification and cracking, and the pyrolysis gas calorific value of generation is higher, and tar contains
It measures low, convenient for the comprehensive utilization of pyrolysis gas, improves the stability of system operation, reliability.
(3) generation that can reduce dioxin in domestic garbage was harmlessly treated reduces the discharge of pollutant, and clinker heat
Burn decrement rate is low, and the energy efficiency of heating- utilization of system is high.
Detailed description of the invention
Fig. 1 is the building-block of logic of the electricity generation system of the first embodiment of the invention.
Fig. 2 is the structural schematic diagram of the electricity generation system of the first embodiment of the invention.
Specific embodiment
Below with reference to embodiment, the present invention will be described in detail.It should be noted that in the absence of conflict, the present invention
In embodiment and embodiment in feature can be combined with each other.For sake of convenience, hereinafter such as occur "upper", "lower", " left side ",
" right side " printed words only indicate consistent with the upper and lower, left and right direction of attached drawing itself, do not play restriction effect to structure.
As depicted in figs. 1 and 2, a kind of domestic garbage pyrolysis gasification process system, including the rotary kiln gasification being sequentially communicated
Unit 100, fluidized bed reformer unit 200 and clean unit 400,
The rotary kiln gasification unit 100 includes rotary kiln 103, and the feed end of the rotary kiln 103 is equipped with feeding mechanism；
The fluidized bed reformer unit 200 includes the fluidized bed reformer 201 being connected to 103 discharge end of rotary kiln, the fluidisation
The pyrolysis gas outlet of bed reformer 201 is communicated with air preheater 206, and the air inlet duct 208 of air preheater 206 is equipped with
The air outlet slit pipe 209 of combustion fan 205, air preheater 206 is connected to fluidized bed reformer 201, air preheater 206
Pyrolysis gas outlet pipe 210 is connected to the air inlet of clean unit；Fluidized bed reformer 201 is equipped with the feed for adding catalyst
Mechanism；
It further include pyrolysis gas cycling element 300, the air inlet of the pyrolysis gas cycling element 300 is connected to the feed end of rotary kiln,
The gas outlet of pyrolysis gas cycling element 300 is connected to the bottom of fluidized bed reformer 201.
The feeding mechanism includes trash repository 101 and pusher 102, and the feed inlet of pusher is connected to trash repository, pusher
The discharge port of machine is connected to the feed end of rotary kiln.The feeder includes catalyst feed bin 203 and batcher 204, feed
The feed inlet of machine is connected to catalyst feed bin, and the discharge port of batcher is connected to fluidized bed reformer.
The feed end of the rotary kiln 103 is higher than discharge end, gradient 2%.
The air preheater 206 is accumulation of heat typed high temperature air preheater.
The fluidized bed reformer unit 200 further includes high-temperature separator 202, the air inlet and fluidized bed of the high-temperature separator
The pyrolysis gas outlet of reformer unit 200 is connected to, the gas outlet of high-temperature separator 202 and the pyrolysis gas entrance of air preheater 206
Pipe 211 is connected to, and the discharge port of high-temperature separator 202 is connected to fluidized bed reformer 201.
The pyrolysis gas cycling element 300 includes interconnected dust-precipitator 301 and circulating fan 302.The dust-precipitator
301 be rotoclone collector.
The clean unit includes successively interconnected bagroom 401 and air-introduced machine 402.
The rotary kiln is revolution gasification furnace.
A kind of electricity generation system is connected to including domestic garbage pyrolysis gasification process system as described above and with clean unit
Gas electricity generator 502.
When power generation, house refuse is stored in trash repository 101, by pusher 102 that the rubbish in trash repository 101 is uniform
It pushing to rotary kiln 103 and measures the rubbish quality of feeding, rotary kiln 103 is 2% inclination arrangement by gradient, and import end position is high,
Export that end position is low, the revolving speed for controlling rotary kiln is 1 ~ 5 rev/min, and rubbish is in rotary kiln 103 from input end to outlet end
Mobile, the residence time is 60 ~ 90 minutes, and fluidized bed reformer 201 generates high temperature pyrolysis gas, and temperature is 850 DEG C ~ 1050 DEG C,
High temperature pyrolysis gas are flowed from the outlet end of rotary kiln 103 to input end, and rubbish and high temperature pyrolysis gas are inversely transported in rotary kiln 103
Dynamic, rotary kiln temperature is 450 DEG C ~ 650 DEG C, and under high temperature pyrolysis gas effect pyrolytic gasification reaction occurs for rubbish, generation it is low
Warm is vented one's spleen and clinker, and the main component of Low Temperature Thermal is carbon monoxide, hydrogen, methane, carbon dioxide, nitrogen, Shao Liangjiao
Oil, dust, temperature are 150 DEG C ~ 250 DEG C.
Wherein, the Low Temperature Thermal produced in rotary kiln 103 is all after 301 dedusting of dust-precipitator, into circulating fan
302 boost to 10kPa ~ 12kPa, are all sent into fluidized bed reformer 201 and are used as fluidized wind.
Wherein, the clinker produced in rotary kiln 103 enters fluidized bed reformer 201 from the outlet of rotary kiln 103；Catalyst material
Catalyst in storehouse 203 uses dolomite, and dolomite quality meets YB/T5278-2007 " dolomite " furnace refractory dolomite
The standard of chemical component, partial size be 0 ~ 8mm, by batcher 204 according to mass ratio be rubbish: dolomite=100:4 ratio
Dolomite feed is sent to fluidized bed reformer 201, clinker and dolomite mixture are under the action of Low Temperature Thermal, in stream
Change state；It is sent into fluidized bed reformer 201 by the high temperature air that air preheater 206 is preheating to 550 DEG C ~ 650 DEG C, passes through tune
The high temperature air amount that section is sent into fluidized bed reformer 201 makes Low Temperature Thermal partially burn under anoxic conditions, maintains fluidisation
Temperature is 850 DEG C ~ 1050 DEG C in bed reformer 201, and tar occurs to crack reforming reaction under the catalytic action of dolomite, significantly
Tar content in pyrolysis gas is reduced, 850 DEG C ~ 1050 DEG C of high temperature pyrolysis gas are generated；Clinker also further burns, and reduces clinker heat
Burn decrement rate, and fluidized bed reformer 201 is discharged by scum pipe 207.
Wherein, 850 DEG C ~ 1050 DEG C high temperature pyrolysis gas main components that fluidized bed reformer 201 generates are carbon monoxide, hydrogen
Gas, methane, carbon dioxide, nitrogen, dust, micro tar enter back into accumulation of heat by 202 separate section dust of high-temperature separator
Formula high-temperature air preheater 206, high temperature pyrolysis gas transfer heat to the air from combustion fan 205, high temperature pyrolysis air cooling
But to 160 DEG C ~ 170 DEG C, air is heated to 550 DEG C ~ 650 DEG C, and combustion fan wind pressure is 8kPa ~ 10kPa.
Wherein, 160 DEG C ~ 170 DEG C of the medium temperature pyrolysis gas that air preheater 206 comes out passes through 401 dedusting of bagroom,
Air-introduced machine 402 boosts, and air-introduced machine uses variable frequency adjustment, controls rotary kiln exit position dimension by adjusting 402 revolving speed of air-introduced machine
Holding negative pressure is -50Pa ~ -200Pa.
Wherein, purification pyrolysis gas enters air accumulator 501, is generated electricity by gas electricity generator 502, realizes the efficient benefit of pyrolysis gas
With.Air accumulator 501 and gas electricity generator 502 form pyrolysis gas and utilize system 500, realize resource utilization.
Rotary kiln couple using domestic garbage was harmlessly treated is carried out, with revolution with fluidized bed reformer by the present invention
The pyrolysis gas that kiln gasification furnace generates all is used as the fluidized wind of fluidized bed reformer, and the cracking for realizing pyrolysis gas is reformed, favorably
In the calorific value for improving pyrolysis gas, tar content is significantly reduced, the generation of dioxin is reduced, effectively improves the energy of house refuse
Efficiency of heating- utilization reduces the discharge of pollutant.
The content that above-described embodiment illustrates should be understood as that these embodiments are only used for being illustrated more clearly that the present invention, without
For limiting the scope of the invention, after the present invention has been read, those skilled in the art are to various equivalent forms of the invention
Modification each fall within the application range as defined in the appended claims.
Claims (10)
1. a kind of domestic garbage pyrolysis gasification process system, which is characterized in that including the rotary kiln gasification unit being sequentially communicated
(100), fluidized bed reformer unit (200) and clean unit (400),
The rotary kiln gasification unit (100) includes rotary kiln (103), and the feed end of the rotary kiln (103) is equipped with charger
Structure；
The fluidized bed reformer unit (200) includes the fluidized bed reformer (201) being connected to rotary kiln (103) discharge end, institute
The pyrolysis gas outlet for stating fluidized bed reformer (201) is communicated with air preheater (206), and the air of air preheater (206) enters
Mouth pipe (208) is equipped with combustion fan (205), the air outlet slit pipe (209) and fluidized bed reformer of air preheater (206)
(201) it is connected to, the pyrolysis gas outlet pipe (210) of air preheater (206) is connected to the air inlet of clean unit；Fluidized bed is reformed
Furnace (201) is equipped with the feeder for adding catalyst；
It further include pyrolysis gas cycling element (300), the air inlet of the pyrolysis gas cycling element (300) and the feed end of rotary kiln connect
Logical, the gas outlet of pyrolysis gas cycling element (300) is connected to the bottom of fluidized bed reformer (201).
2. domestic garbage pyrolysis gasification process system according to claim 1, which is characterized in that the feeding mechanism includes
Trash repository (101) and pusher (102), the feed inlet of pusher are connected to trash repository, the discharge port of pusher and rotary kiln
Feed end connection.
3. domestic garbage pyrolysis gasification process system according to claim 1, which is characterized in that the rotary kiln (103)
Feed end be higher than discharge end, gradient 1-5%.
4. domestic garbage pyrolysis gasification process system according to claim 1, which is characterized in that the air preheater
It (206) is accumulation of heat typed high temperature air preheater.
5. domestic garbage pyrolysis gasification process system according to claim 1, which is characterized in that the fluidized bed is reformed single
First (200) further include high-temperature separator (202), the air inlet of the high-temperature separator and the pyrolysis of fluidized bed reformer unit (200)
Gas outlet, the gas outlet of high-temperature separator (202) are connected to the pyrolysis gas inlet tube (211) of air preheater (206), high
The discharge port of warm separator (202) is connected to fluidized bed reformer (201).
6. domestic garbage pyrolysis gasification process system according to claim 1, which is characterized in that the pyrolysis gas circulation is single
First (300) include interconnected dust-precipitator (301) and circulating fan (302).
7. domestic garbage pyrolysis gasification process system according to claim 1-6, which is characterized in that the purification
Unit includes successively interconnected bagroom (401) and air-introduced machine (402).
8. a kind of electricity generation system, which is characterized in that at the described in any item domestic garbage pyrolysis gasifications of such as claim 1-7
Reason system and gas electricity generator (502), the gas outlet of the clean unit are connected to gas electricity generator.
9. a kind of domestic garbage pyrolysis gasification process method, which is characterized in that using such as the described in any item lifes of claim 1-7
Refuse pyrolysis gasification process system living carries out, and includes the following steps:
House refuse is sent into rotary kiln by feeding mechanism, the revolving speed for controlling rotary kiln is 1-5r/min；
Revolution is introduced by the part high temperature pyrolysis gas that pyrolysis gas cycling element (300) generates fluidized bed reformer unit (200)
Kiln obtains Low Temperature Thermal and clinker so that the domestic garbage pyrolysis in rotary kiln gasifies；Period, at rotary kiln discharge end
Pressure is -50Pa ~ -200Pa；
Low Temperature Thermal is all passed through in fluidized bed reformer (201) by pyrolysis gas cycling element (300) and is used as fluidized wind,
Period, it is 8kPa ~ 15kPa that control Low Temperature Thermal, which is passed through wind pressure,；
Clinker is directly discharged into fluidized bed reformer (201)；
Catalyst is added into fluidized bed reformer (201) by feeder, controls fluidized bed reformer (201) fire box temperature
It is 850-1050 DEG C, so that clinker and Low Temperature Thermal catalytic pyrolysis or combustion decomposition, obtain high temperature pyrolysis gas；Wherein, it is catalyzed
The additive amount of agent is the 2-8% for the house refuse quality being sent into rotary kiln；
Part high temperature pyrolysis gas are sent into air preheater (206), after air heat-exchange, pyrolysis gas is sent at clean unit
Air after preheating is sent into fluidized bed reformer (201) by reason.
10. domestic garbage pyrolysis gasification process method according to claim 9, which is characterized in that the catalyst includes
At least one of lime stone and dolomite, it is preferable that the partial size of catalyst is less than 8mm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260324A (en) * | 2019-06-05 | 2019-09-20 | 李跃飞 | Multi-Layer and Multi-Cavity refuse pyrolysis gasification furnace and its application complete processing system of rubbish |
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| CN111473334B (en) * | 2020-04-21 | 2021-02-19 | 佛山领成环境科技有限公司 | Be applied to burning furnace that burns of industry field of giving up useless admittedly |
| CN111704923A (en) * | 2020-06-22 | 2020-09-25 | 北京克林泰尔环保科技有限公司 | Cracking method of tire rubber for inhibiting generation of dioxin |
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