CN108003937A - A kind of apparatus and method of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal - Google Patents

A kind of apparatus and method of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal Download PDF

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Publication number
CN108003937A
CN108003937A CN201810014241.XA CN201810014241A CN108003937A CN 108003937 A CN108003937 A CN 108003937A CN 201810014241 A CN201810014241 A CN 201810014241A CN 108003937 A CN108003937 A CN 108003937A
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Prior art keywords
charcoal
biomass
gas
combustion
direct
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CN201810014241.XA
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Inventor
苏玉臻
张守军
赵成武
鲁万宝
胡鹏
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Hefei Debo Bioenergy Science & Technology Co Ltd
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Hefei Debo Bioenergy Science & Technology Co Ltd
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Priority to CN201810014241.XA priority Critical patent/CN108003937A/en
Publication of CN108003937A publication Critical patent/CN108003937A/en
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72Other features
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72Other features
    • C10J3/82Gas withdrawal means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C1/00Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air
    • F23C1/04Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air lump and gaseous fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING 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
    • F23L9/00Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/02Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air above the fire
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00Details of gasification processes
    • C10J2300/09Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0903Feed preparation
    • C10J2300/0909Drying
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00Details of gasification processes
    • C10J2300/09Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0913Carbonaceous raw material
    • C10J2300/0916Biomass

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Combustion Of Fluid Fuel (AREA)

Abstract

The present invention provides a kind of apparatus and method of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal, including:Charcoal gas combined production device, the charcoal gas combined production device side is equipped with biomass material warehouse, raw material detection device is equipped with the biomass material warehouse, the charcoal gas combined production device side is equipped with biomass direct-combustion boiler burner hearth, the biological fuel gas outlet that charcoal gas combined production device produces is connected with the middle part combustion gas spout and middle and lower part combustion gas spout of biomass direct-combustion boiler burner hearth, collection charcoal device is equipped with the downside of the charcoal gas combined production device, the biomass carbon that charcoal gas combined production device is produced is collected by collection charcoal device.Biomass material by being divided into two classes for being adapted to gasification and being only suitable for direct combustion by the present invention, realize the Multi-class propagation and value cascade utilization of biomass, the diversification of biomass product and high-valued is realized, and the exchanges of mass and energy between charcoal gas combined production device and direct-combustion boiler further increases biomass comprehensive utilization ratio.

Description

A kind of apparatus and method of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal
Technical field
The present invention relates to biomass energy technical field of comprehensive utilization, is specially a kind of biomass direct-combustion boiler coupled biological matter The apparatus and method of gasification coproduction charcoal.
Background technology
The biomass resources such as China's rice husk, stalk, wood chip enrich, as it is renewable, can the accumulating energy be gradually subject to government With the attention of scientific research personnel.Biomass direct-fired technology develops comparative maturity, and the state that on December 1st, 2006 goes into operation can 30 megawatts of Dan County Biomass direct combustion power generation project is first, China biomass direct combustion power generation project, has pulled open domestic large scale biomass power generation production The prelude of industry development.Direct-combustion boiler is wider to biomass accommodation, applicable various biomass materials, and processing is also more simple It is single, but direct-combustion boiler parameter is low, product is single, and ash content carbon is big, and the performance of enterprises is low.Though gasification of biomass Poly-generation technology Start late, in recent years, under the continuous exploratory development of numerous scientific research personnel and the support of national policy, quickly sent out Exhibition.The gasification of biomass Poly-generation project that the existing many in the country is currently running and builds.Come out by gasification of biomass Poly-generation The value of biomass carbon is high, acts not only as the raw material of the high-quality charcoal such as activated carbon, quick burning charcoal, and because of its good microcosmic knot Structure and physicochemical property, can be as the raw material of production charcoal base manure, soil conditioner and slow-release fertilizer;Gasification of biomass is main in China With using low moisture, high heating value, high ash melting point, the biomass (such as sawdust, rice husk etc.) of good fluidity are raw material, other raw materials It is easy to cause that gasification of biomass is unstable, in gasification the problems such as slagging, device can not be run steadily in the long term.
Therefore, it is necessary to a kind of rational biomass economy pattern, the utilization of popularity, raw material that raw material utilizes can be improved Rate, can also realize the diversification, high-valued of biomass product.
The content of the invention
Technical problem solved by the invention is to provide a kind of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal Apparatus and method, to solve the problems mentioned in the above background technology.
Technical problem solved by the invention is realized using following technical scheme:A kind of biomass direct-combustion boiler coupling life The device of gasification substance coproduction charcoal, including:Charcoal gas combined production device, the charcoal gas combined production device side are equipped with biomass material storehouse Storehouse, is equipped with raw material detection device in the biomass material warehouse, the charcoal gas combined production device side is equipped with biomass direct-fired pot Stove burner hearth, the biological fuel gas outlet that charcoal gas combined production device produces and the middle part combustion gas spout of biomass direct-combustion boiler burner hearth and in Combustion gas spout in lower part connects, and collection charcoal device, the biology that charcoal gas combined production device is produced are equipped with the downside of the charcoal gas combined production device Matter charcoal is collected by collection charcoal device.
Further, the biomass material warehouse is equipped with charcoal gas coproduction material outlet, direct-combustion boiler material outlet, charcoal Gas coproduction material outlet is equipped with raw material stoving device, and direct-combustion boiler material outlet is connected to biomass direct-combustion boiler burner hearth.
Further, exhaust pipe is equipped with the upside of the biomass direct-combustion boiler burner hearth, superheater is equipped with exhaust pipe, it is described Exhaust pipe tail end is connected to chimney, and air-introduced machine is connected to by the exhaust pipe tail end side, and a boiler exhaust gas part connects through air-introduced machine The raw material stoving device of charcoal gas combined production device is connected to, remaining exhaust gas flow direction chimney.
Further, the raw material detection device includes industrial analysis instrument and sorting unit, by biomass material storehouse The raw material in storehouse is detected, and filters out the raw material for the coproduction charcoal that suitably gasifies, and the raw material for being not suitable for gasification coproduction charcoal will be fed into direct combustion Boiler combustion.
Further, the middle part combustion gas spout and middle and lower part combustion gas spout are equipped with flow control valve, and 20%~80% Biological fuel gas enter hearth combustion from middle and lower part gas injection mouth, effectively promote the burning of burner hearth bottom biomass into Journey, reduces the phosphorus content in lime-ash;Remaining biological fuel gas enters hearth combustion from middle part gas injection mouth so that middle and upper part The flue gas of burner hearth is in reducing atmosphere, not only allows the NOx generated to be reduced, but also inhibits the generation of new NOx.
Further, the biomass direct-combustion boiler burner hearth bottom is equipped with an air inlet, biomass direct-combustion boiler burner hearth Top side is equipped with overfire air port, carries out the staged air distribution of boiler combustion, reduces burning velocity and temperature in combustion zone Level, avoids the generation of thermal NO x;And the reducing atmosphere region produced can reduce NOx and the suppression in flue gas The generation of new NOx.The arrangement of Secondary Air, realizes and combustible component in flue gas is burnt.
Further, heat radiation plate is additionally arranged above the combustion gas spout of the middle and lower part of the biomass direct-combustion boiler burner hearth, Heat radiation plate and the angle in furnace wall face are 20 °~60 °, its radiant heat produced promotes the burning of burner hearth bottom biomass, and Flowing to flue gas will not cause big influence, and certain firm effect is also functioned to burner hearth body construction.
A kind of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal method, comprises the following steps:
(1) raw material in biomass material warehouse is detected with primary industry analyzer, wherein fixed carbon and ash content Ratio >=1 raw material can sort out be sent into charcoal gas combined production device carry out gasification coproduction charcoal, remaining be sent into direct-combustion boiler burning;
(2) biomass material and the First air that excess air coefficient is 0.5~1.1 are sent into direct-combustion boiler and burn, The Secondary Air that burner hearth overfire air port configuration excess air coefficient is 0.1~0.4 is fully burnt;
(3) it is adapted to after the raw material of gasification coproduction charcoal gasifies through charcoal gas combined production device, most fixed carbon in raw material, The biomass carbon that a small amount of volatile matter and ash content are formed is collected after row's charcoal device discharge charcoal gas combined production device, charcoal gas connection Production device produce 20%~80% biological fuel gas burn into burner hearth, remaining biological fuel gas be passed through burner hearth into Row burning;
(4) biomass material and biological fuel gas burn in boiler furnace, and boiler part tail gas is sent to charcoal through air-introduced machine The drying unit of gas combined production device, dries the raw material that will enter charcoal gas combined production device, remaining exhaust gas flow direction chimney.
Compared with prior art, the beneficial effects of the invention are as follows:The present invention improves the popularity that biomass material utilizes, Pass through the Multi-class propagation and value that are divided into two classes for being adapted to gasification and being only suitable for direct combustion, realize biomass biomass material Cascade utilization, realizes the diversification of biomass product and high-valued, and the material between charcoal gas combined production device and direct-combustion boiler Biomass comprehensive utilization ratio is further increased with energy exchange.
Biological fuel gas is passed through burner hearth from combustion gas spout in the present invention, contributes to catching fire and firing for burner hearth bottom biomass Cinder, reduces the phosphorus content in lime-ash;Biological fuel gas is passed through burner hearth from combustion gas spout so that burner hearth flue gas is in reproducibility gas Atmosphere, can not only allow the NOx generated to be reduced, and inhibit the generation of new NOx;The arrangement of overfire air port, promotes Combustible component burns in flue gas.
The radiant heat that the heat radiation plate that the present invention adds above the combustion gas spout of direct combustion burner hearth middle and lower part produces helps Catching fire and burn in furnace bottom biomass, also has burner hearth body construction certain firm effect;The tail gas of direct-combustion boiler is to charcoal The drying of gas combined production device raw material, reduces moisture when raw material enters stove, thus reduces charcoal gas combined production device to initial feed The requirement of moisture.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the heat radiation plate structure diagram of the present invention.
Embodiment
In order to make the implement technical means of the present invention, creation characteristic, reached purpose and effect easy to understand, tie below Conjunction is specifically illustrating, and the present invention is further explained.
As shown in Figure 1 and Figure 2, a kind of device of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal, including:Charcoal gas Combined production device 4, the charcoal gas combined production device side are equipped with biomass material warehouse 1, original are equipped with the biomass material warehouse 1 Expect detection device 2,4 side of charcoal gas combined production device is equipped with biomass direct-combustion boiler burner hearth 9, what charcoal gas combined production device 4 produced Biological fuel gas outlet is connected with the middle part combustion gas spout 7 and middle and lower part combustion gas spout 8 of 9 burner hearth of biomass direct-combustion boiler burner hearth, The downside of charcoal gas combined production device 4 is equipped with collection charcoal device 5, and the biomass carbon that charcoal gas combined production device is produced is by collection charcoal device 5 Collect.
Specifically, the biomass material warehouse 1 is equipped with charcoal gas coproduction material outlet, direct-combustion boiler material outlet, charcoal Gas coproduction material outlet is equipped with raw material stoving device, and direct-combustion boiler material outlet is connected to biomass direct-combustion boiler burner hearth 9.
Specifically, the upside of biomass direct-combustion boiler burner hearth 9 is equipped with exhaust pipe, superheater 11, institute are equipped with exhaust pipe State exhaust pipe tail end and be connected to chimney 13, air-introduced machine 12 is connected to by the exhaust pipe tail end side, a boiler exhaust gas part is through drawing Wind turbine 12 is connected to the raw material stoving device 3 of charcoal gas combined production device, remaining exhaust gas flow direction chimney 13.
Specifically, the raw material detection device 2 includes industrial analysis instrument and sorting unit, by biomass material warehouse Raw material be detected, filter out suitably gasify coproduction charcoal raw material, be not suitable for gasify coproduction charcoal raw material will be fed into direct combustion pot Stove burns.
Specifically, the middle part combustion gas spout 7 and middle and lower part combustion gas spout 8 are equipped with flow control valve, 20%~80% Biological fuel gas enter hearth combustion from middle and lower part gas injection mouth 8, effectively promote the burning of burner hearth bottom biomass into Journey, reduces the phosphorus content in lime-ash;Remaining biological fuel gas enters hearth combustion from middle part gas injection mouth 7 so that on The flue gas of portion's burner hearth is in reducing atmosphere, not only allows the NOx generated to be reduced, but also inhibits the generation of new NOx.
Specifically, 9 bottom of biomass direct-combustion boiler burner hearth is equipped with an air inlet, biomass direct-combustion boiler burner hearth 9 Top side is equipped with overfire air port 6, carries out the staged air distribution of boiler combustion, reduces the burning velocity and temperature in combustion zone Level, avoids the generation of thermal NO x;And the reducing atmosphere region produced can reduce NOx and the suppression in flue gas The generation of new NOx.The arrangement of Secondary Air, realizes and combustible component in flue gas is burnt.
Specifically, the top of combustion gas spout 8 of the middle and lower part of the biomass direct-combustion boiler burner hearth 9 is additionally arranged heat radiation plate 10, heat radiation plate and the angle in furnace wall face are 20 °~60 °, its radiant heat produced promotes the burning of burner hearth bottom biomass, And the flowing to flue gas will not cause big influence, and certain firm effect is also functioned to burner hearth body construction.
A kind of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal method, comprises the following steps:
(1) raw material in biomass material warehouse 1 is detected with primary industry analyzer, wherein fixed carbon and ash content Ratio >=1 raw material can sort out be sent into charcoal gas combined production device carry out gasification coproduction charcoal, remaining be sent into direct-combustion boiler burning;
(2) biomass material and the First air that excess air coefficient is 0.5~1.1 are sent into direct-combustion boiler and burn, Burner hearth overfire air port 6 configures the Secondary Air that excess air coefficient is 0.1~0.4 and is fully burnt;
(3) it is adapted to after the raw material of gasification coproduction charcoal gasifies through charcoal gas combined production device, most fixed carbon in raw material, The biomass carbon that a small amount of volatile matter and ash content are formed is collected after row's charcoal device discharge charcoal gas combined production device, charcoal gas connection 20%~80% biological fuel gas that production device 4 produces burns into burner hearth, remaining biological fuel gas is passed through burner hearth Burn;
(4) biomass material and biological fuel gas burn in boiler furnace, and boiler part tail gas is sent to through air-introduced machine 12 The drying unit 3 of charcoal gas combined production device, dries the raw material that will enter charcoal gas combined production device, remaining exhaust gas flow direction cigarette Chimney 13.
Embodiment 1:Raw material is rice straw and bamboo chip, and two kinds of biomass fixed carbons and ash content are detected using feedstock analysis instrument Ratio, wherein, the ratio of rice straw fixed carbon and ash content is 0.91, and the ratio of bamboo chip fixed carbon and ash content is 10.1.By screening, The First air that rice straw is sent into direct-combustion boiler with air coefficient is 0.85 burns.Bamboo chip moisture after the drying of boiler exhaust gas For 28%, it is then fed into charcoal gas combined production device and gasifies, be collected into 15% bamboo chip charcoal of about bamboo chip raw material weight, charcoal The biological fuel gas that gas combined production device produces is sent to direct-combustion boiler and burns, and has 60% biological fuel gas from lower furnace portion Fuel gas inlet enter hearth combustion, there is the fuel gas inlet of 40% biological fuel gas in the middle part of burner hearth to enter hearth combustion, stove Thorax top is passed through the Secondary Air that air coefficient is 0.3, and a part of tail gas that boiler combustion produces is sent to charcoal gas combined production device stokehold Feed hopper is to raw material stoving.After testing, boiler produces ash content carbon about 3%, and tail gas NOx content is 113mg/Nm3, compared to original Direct-combustion boiler, in the ash content carbon and tail gas after biological fuel gas coupling direct-combustion boiler the content of NOx reduce by 22% respectively, 15%.
Embodiment 2:Raw material is leaf, wheat stalk, wood chip, and the fixation of three kinds of biomass is detected using feedstock analysis instrument The ratio of charcoal and ash content, wherein, leaf, wheat stalk, the ratio of the fixed carbon of wood chip and ash content are respectively 0.8,0.92,9.5. By screening, leaf and the First air that wheat stalk is sent into direct-combustion boiler with air coefficient is 0.9 burn.Wood chip passes through pot Moisture is 25% after the drying of furnace exhaust gas, is then fed into charcoal gas combined production device and gasifies, is collected into about bamboo chip raw material weight 14% wood chip charcoal of amount, the biological fuel gas that charcoal gas combined production device produces are sent to direct-combustion boiler and burn, and have 50% Biological fuel gas enters hearth combustion from the fuel gas inlet of lower furnace portion, there is the combustion gas of 50% biological fuel gas in the middle part of burner hearth Entrance enters hearth combustion, and upper furnace is passed through the Secondary Air that air coefficient is 0.3, and a part of tail gas that boiler combustion produces is sent into To charcoal gas combined production device front-furnace feeding storehouse to raw material stoving.After testing, which produces ash content carbon about 4%, and tail gas NOx contains Measure as 108mg/Nm3, compared to former direct-combustion boiler, in the ash content carbon and tail gas after biological fuel gas coupling direct-combustion boiler The content of NOx reduces by 20%, 18% respectively.
The basic principles, main features and the advantages of the invention have been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the present invention by appended claims and Its equivalent thereof.

Claims (8)

1. a kind of device of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal, including:Charcoal gas combined production device, its feature exist In:The charcoal gas combined production device side is equipped with biomass material warehouse, and raw material detection dress is equipped with the biomass material warehouse Put, the charcoal gas combined production device side is equipped with biomass direct-combustion boiler burner hearth, and the biological fuel gas that charcoal gas combined production device produces goes out Mouth is connected with the middle part combustion gas spout and middle and lower part combustion gas spout of biomass direct-combustion boiler burner hearth, on the downside of the charcoal gas combined production device Equipped with collection charcoal device, the biomass carbon that charcoal gas combined production device is produced is collected by collection charcoal device.
2. a kind of device of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal according to claim 1, its feature It is:The biomass material warehouse is equipped with charcoal gas coproduction material outlet, direct-combustion boiler material outlet, and charcoal gas coproduction raw material goes out Mouth is equipped with raw material stoving device, and direct-combustion boiler material outlet is connected to biomass direct-combustion boiler burner hearth.
3. a kind of device of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal according to claim 1, its feature It is:Exhaust pipe is equipped with the upside of the biomass direct-combustion boiler burner hearth, superheater is equipped with exhaust pipe, the exhaust pipe tail end connects Chimney is connected to, air-introduced machine is connected to by the exhaust pipe tail end side, a boiler exhaust gas part is connected to charcoal gas coproduction through air-introduced machine The raw material stoving device of device, remaining exhaust gas flow direction chimney.
4. a kind of device of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal according to claim 1, its feature It is:The raw material detection device includes industrial analysis instrument and sorting unit, by being carried out to the raw material in biomass material warehouse Detection, filters out the raw material for the coproduction charcoal that suitably gasifies, and the raw material for being not suitable for gasification coproduction charcoal will be fed into direct-combustion boiler burning.
5. a kind of device of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal according to claim 1, its feature It is:The middle part combustion gas spout and middle and lower part combustion gas spout are equipped with flow control valve, 20%~80% biological fuel gas Enter hearth combustion from middle and lower part gas injection mouth, effectively promote the flame mechanism of burner hearth bottom biomass, reduce lime-ash In phosphorus content;Remaining biological fuel gas enters hearth combustion from middle part gas injection mouth so that the flue gas of middle and upper part burner hearth is in Reducing atmosphere, not only allows the NOx generated to be reduced, but also inhibits the generation of new NOx.
6. a kind of device of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal according to claim 1, its feature It is:The biomass direct-combustion boiler burner hearth bottom is equipped with an air inlet, and biomass direct-combustion boiler upper furnace side is equipped with Overfire air port, carries out the staged air distribution of boiler combustion, reduces burning velocity and temperature levels in combustion zone, avoids heat The generation of power type NOx;And the reducing atmosphere region produced can reduce the NOx in flue gas and suppress the generation of new NOx, The arrangement of Secondary Air, realizes and combustible component in flue gas is burnt.
7. a kind of device of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal according to claim 1, its feature It is:Heat radiation plate, heat radiation plate and stove are additionally arranged above the combustion gas spout of the middle and lower part of the biomass direct-combustion boiler burner hearth The angle of wall is 20 °~60 °, its radiant heat produced promotes the burning of burner hearth bottom biomass, and to the flowing of flue gas Big influence will not be caused, certain firm effect is also functioned to burner hearth body construction.
A kind of coproduction charcoal method 8. biomass direct-combustion boiler coupled biological matter gasifies, it is characterised in that:Comprise the following steps:
(1) raw material in biomass material warehouse is detected with primary industry analyzer, wherein the ratio of fixed carbon and ash content The raw material of value >=1 can sort out feeding charcoal gas combined production device and carry out gasification coproduction charcoal, remaining is sent into direct-combustion boiler burning;
(2) biomass material and the First air that excess air coefficient is 0.5~1.1 are sent into direct-combustion boiler and burn, in burner hearth The Secondary Air that overfire air port configuration excess air coefficient is 0.1~0.4 is fully burnt;
(3) it is adapted to after the raw material of gasification coproduction charcoal gasifies through charcoal gas combined production device, it is most fixed carbon in raw material, a small amount of Volatile matter and ash content formed biomass carbon through row charcoal device discharge charcoal gas combined production device after be collected, the coproduction of charcoal gas dress 20%~80% biological fuel gas for putting generation burns into burner hearth, remaining biological fuel gas is passed through burner hearth and is fired Burn;
(4) biomass material and biological fuel gas burn in boiler furnace, and boiler part tail gas is sent to charcoal gas through air-introduced machine and joins The drying unit of device is produced, the raw material that will enter charcoal gas combined production device is dried, remaining exhaust gas flow direction chimney.
CN201810014241.XA 2018-01-08 2018-01-08 A kind of apparatus and method of biomass direct-combustion boiler coupled biological matter gasification coproduction charcoal Withdrawn CN108003937A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108826274A (en) * 2018-08-24 2018-11-16 合肥德博生物能源科技有限公司 A kind of conveying of biological fuel gas and low nitrogen oxide burning device and method
CN109735371A (en) * 2019-02-13 2019-05-10 浙江大学 A kind of biomass circulating fluidized bed direct-combustion boiler and its with gasification furnace coupled electricity-generation co-producing active carbon system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108826274A (en) * 2018-08-24 2018-11-16 合肥德博生物能源科技有限公司 A kind of conveying of biological fuel gas and low nitrogen oxide burning device and method
CN109735371A (en) * 2019-02-13 2019-05-10 浙江大学 A kind of biomass circulating fluidized bed direct-combustion boiler and its with gasification furnace coupled electricity-generation co-producing active carbon system

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Application publication date: 20180508