CN105273731A - Biomass pyrolysis gas/charcoal co-production device and process - Google Patents
Biomass pyrolysis gas/charcoal co-production device and process Download PDFInfo
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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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
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Abstract
The invention discloses a biomass pyrolysis gas/charcoal co-production device and process. The co-production device comprises a fluidized bed gas burner, a pyrolysis gasification auger, a vapor discharge system, a charging device, a gas-charcoal separation device, a high-temperature gas booster fan, an air preheater and other equipment. The production process comprises the steps that biomass materials are conveyed into the pyrolysis gasification auger for pyrolysis and gasification reaction; in the reaction process, water vapor generated at the drying layer is discharged through the vapor discharge system, charcoal generated after pyrolysis and gasification and high-temperature biomass gas with a low heating value are separated through the separation device to obtain high-quality charcoal, and a part of the generated high-temperature biomass gas with the low heating value is output into the fluidized bed gas burner for reaction; meanwhile, bed materials are fluidified to supply heat to the pyrolysis gasification auger so as to keep the pyrolysis and gasification reaction continuous. By the adoption of the process, the method is advanced, production equipment is simple and reliable, the yield rate of charcoal from biomass is high, and the production effect is good.
Description
Technical field
The invention belongs to biomass utilization technologies field, be specifically related to a kind of biomass pyrolytic coproduction combustion gas/charcoal device and technique.
Background technology
Along with day by day highlighting of global energy and environmental problem, new energy development becomes a urgent task.Biomass, as a kind of clean energy, are similar to zero to the clean quantity discharged of the carbonic acid gas of air.In biomass, the content of nitrogen, sulphur is extremely low, when carrying out Energy conversion oxynitride and sulfide emission all very low.Devoting Major Efforts To Developing biomass fuel resource, contributes to improving the energy structure of China based on fossil oil, reduces the discharge of sulfide and oxynitride, not only can alleviate Greenhouse effect, can also reduce the content of carbonic acid gas in air.China's biomass fuel aboundresources, the biomass resource total amount that the whole nation can be used as energy utilization is about 4.6 hundred million tons of standard coals every year, but only make use of 2,200 ten thousand tons of standard coals at present, utilization ratio is less than 5%, and major part still adopts the means process such as burning, landfill seriously polluted.
Biomass pyrogenation gasification burning Poly-generation technology is by volatile matter and fixed carbon feature dimerous based on biomass combustibleconstituents, adopt decoupling zero reactive mode, fixed carbon transforms into high-quality biological charcoal, and volatile matter transforms into combustion gas and then burning obtains heat energy or electric energy.Biomass pyrogenation gasification burning Poly-generation technology can significantly improve the economy of biomass economy project, day by day comes into one's own.In dissimilar charcoal, the wooden class raw material of bamboo obtains bamboo charcoal and deep processing becomes gac; Rice husk class raw material to obtain after rice hull carbon for steel mill's lagging material or carries out deep processing and obtain gac and nano-scale silicon crystals; Stalk raw materials obtains straw charcoal and then makes high added value charcoal base composite fertilizer, and after Different treatments, charcoal all can realize high value applications.But, multiple links such as China's biomass collection, transport are all comparatively extensive, in addition the characteristic of biomass itself causes available biomass and has high-moisture, low heat value, overbasic feature, air is adopted to cause charcoal yield low as the pyrolytic gasification technique of vaporized chemical, economic benefit is bad, and when biomass material high-moisture, gasification is unstable.Therefore, high-moisture, low heat value, high alkalinity biomass can be adapted in the urgent need to exploitation, and the biomass multi-production technology that gasification environment is controlled, charcoal yield is high.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of production cost is low, adaptability to raw material is wide biomass pyrolytic coproduction combustion gas/charcoal device and production technique thereof are provided.
A kind of biomass pyrolytic coproduction combustion gas/charcoal device, comprise fluidized bed combustion gas burning furnace, pyrolytic gasification auger is provided with in the body of heater of fluidized bed combustion gas burning furnace, the entrance end of pyrolytic gasification auger is provided with feeding device, exit end is provided with charcoal air separation, charcoal air separation is connected to the ingress of high-temperature fuel gas booster fan, the exit end of high-temperature fuel gas booster fan respectively pipeline is connected on fluidized bed combustion gas burning furnace and biological fuel gas transfer line, fluidized bed combustion gas burning furnace sidewall is provided with bed material feeding device and reactant exports, the bottom of fluidized bed combustion gas burning furnace is provided with air compartment, reactant outlet is connected with the entrance end of tripping device, tripping device offers exhanst gas outlet and particulate matter outlet, exhanst gas outlet is connected on air preheater, air preheater connects discharge pipe, air preheater side is also connected with gas blower, opposite side is connected with the air compartment bottom fluidized bed combustion gas burning furnace.
Further describing as technique scheme:
Described pyrolytic gasification auger is also provided with steam-dump system, steam-dump system comprises pipeline and is connected to steam induced draft fan on pyrolytic gasification auger, be arranged on the variable valve on above-mentioned pipeline, and be arranged on the temperature monitor on fluidized bed combustion gas burning furnace furnace wall.
Further describing as technique scheme:
Air distribution plate is provided with in described air compartment.
Further describing as technique scheme:
Slag discharging device is provided with bottom described fluidized bed combustion gas burning furnace.
A production technique for biomass pyrolytic coproduction combustion gas/charcoal, adopts a kind of biomass pyrolytic coproduction combustion gas/charcoal device to produce, comprises the following steps:
(1), in pyrolytic gasification auger, biomass material is added by feeding device;
(2), in fluidized bed combustion gas burning furnace, bed material is added by bed material feeding device;
(3), fluidized bed combustion gas burning furnace is run, the heat obtained that burns is passed to pyrolytic gasification auger by bed material and pyrolytic gasification auger outside surface frictional impact by fluidized bed combustion gas burning furnace, biomass material continues, through pyrolytic gasification auger conveying pyrolysis, gasification, to generate high-temperature biomass gas and charcoal; Raw material is separated through charcoal air separation with charcoal by high-temperature biomass gas in pyrolytic gasification auger, and isolated biomass charcoal is collected; Isolated high-temperature biomass gas enters high-temperature fuel gas booster fan, high-temperature biomass gas output is supplied to other devices by biological fuel gas transfer line and uses or store by high-temperature fuel gas booster fan, and high-temperature biomass gas is inputted fluidized-bed fuel gas buring stove;
(4), gas blower and air preheater is run, air is sent into air preheater by gas blower, the high temperature air exported from air preheater sends into fluidized bed combustion gas burning furnace, high temperature air fully contacts with bed material in fluidized bed combustion gas burning furnace with high-temperature biomass gas, stable burning under the surface catalysis of bed material, the heat of burning passes to pyrolytic gasification auger by bed material and pyrolytic gasification auger outside surface frictional impact, and form biomass pyrolysis gasification provides energy; The high-temperature flue gas that burning produces, through charcoal air separation, isolates particulate matter wherein, and isolated particle is discharged from particulate matter outlet; Isolated high-temperature flue gas is disposed to air preheater preheated air by exhanst gas outlet, and the low-temperature flue gas produced after preheated air carries out fume treatment and discharge by discharge pipe.
Further describing as technique scheme:
Wherein, the water content of biomass material is not higher than 50%, and biomass size is not more than 10cm.
Further describing as technique scheme:
Wherein, pyrolytic gasification auger discharge of steam temperature is 80-160 DEG C.
Further describing as technique scheme:
Wherein, in pyrolytic gasification auger, temperature is 500 ~ 750 DEG C.
Further describing as technique scheme:
Wherein, the temperature of fluidized bed combustion gas burning furnace is 600 ~ 850 DEG C, and in stove, fluidizing velocity is 2 ~ 5m/s, and air preheating temperature is 200 ~ 600 DEG C.
Further describing as technique scheme:
Wherein, bed material is the material of the resistance to grinding machine particle of band catalyticcombustion effect, and comprise quartz sand, alumina balls, pyroceramic, particle diameter is 0.5 ~ 5mm.
Pyrolysis, gasification reaction is there is by the present invention in biomass material in pyrolytic gasification auger, produce biomass charcoal and high-temperature biomass gas, the reaction process of biomass is controlled by the velocity of rotation of adjustment pyrolytic gasification auger, simultaneously by monitoring, in steam generation region by discharge of steam, substantially increase biological fuel gas calorific value; Fluidized bed combustion gas burning furnace is sent in the combustion gas of part biological matter, the bed material such as the quartz sand added in bed, alumina balls, pyroceramic reduce the activation energy of biological fuel gas and tar, realize the warm air catalysis stable burning heat release of low heat value biological flue gas and feeding, utilize the bed material after fluidisation to be to obtain very large heat transfer coefficient in pyrolytic gasification auger outside surface frictional impact process simultaneously, achieve heat fully to be conducted heat to pyrolytic gasification auger heat by fluid-bed combustion furnace, ensure the energy needed for biomass pyrogenation gasification, system capacity is self-supporting; Processing method is advanced, and be applicable to all biomass comprising high humidity, high-alkali low heat value, production unit is simple and reliable, and gasification and pyrolysis reaction occurs in suboxide environment, and it is high that biomass obtain charcoal rate, and productivity effect is good.
Accompanying drawing explanation
Fig. 1 is the structural representation of biomass pyrolytic coproduction combustion gas/charcoal device in the present invention.
Embodiment
See Fig. 1, a kind of biomass pyrolytic coproduction combustion gas/charcoal device, comprise fluidized bed combustion gas burning furnace 1, pyrolytic gasification auger 2 is provided with in the body of heater of fluidized bed combustion gas burning furnace 1, the entrance end of pyrolytic gasification auger 2 is provided with feeding device 3, exit end is provided with charcoal air separation 4, charcoal air separation 4 is connected to the ingress of high-temperature fuel gas booster fan 5, the exit end of high-temperature fuel gas booster fan 5 respectively pipeline is connected on fluidized bed combustion gas burning furnace 1 and biological fuel gas transfer line 6, fluidized bed combustion gas burning furnace 1 sidewall is provided with bed material feeding device 101 and exports 102 with reactant, the bottom of fluidized bed combustion gas burning furnace 1 is provided with air compartment 103, reactant outlet 102 is connected with the entrance end of tripping device 7, tripping device 7 offers exhanst gas outlet 701 and particulate matter outlet 702, exhanst gas outlet 701 is connected on air preheater 8, air preheater 8 connects discharge pipe 9, air preheater 8 side is also connected with gas blower 10, opposite side is connected with the air compartment 103 bottom fluidized bed combustion gas burning furnace 1.
Its operational process is, the heat obtained that burns is passed to pyrolytic gasification auger 2 by bed material and pyrolytic gasification auger outside surface frictional impact by fluidized bed combustion gas burning furnace 1, biomass material continues to carry pyrolysis, gasification through pyrolytic gasification auger 2, generates high-temperature biomass gas and charcoal.Raw material is separated through charcoal air separation 4 with charcoal by high-temperature biomass gas in pyrolytic gasification auger 2, and isolated biomass charcoal is collected; Isolated high-temperature biomass gas enters high-temperature fuel gas booster fan 5, high-temperature fuel gas booster fan 5 exports and connects biological fuel gas transfer line 6 and fluidized bed combustion gas burning furnace 1, and high-temperature biomass gas exports and is supplied to the use of other devices or stores by biological fuel gas transfer line 6.
Air is sent into air preheater 8 by gas blower 10, and the high temperature air exported from air preheater 8 sends into fluidized bed combustion gas burning furnace 1.High temperature air fully contacts with bed material in fluidized bed combustion gas burning furnace 1 with high-temperature biomass gas, stable burning under the surface catalysis of bed material.The heat of burning passes to pyrolytic gasification auger 2 by bed material and pyrolytic gasification auger outside surface frictional impact, and form biomass pyrolysis gasification provides energy.The high-temperature flue gas that burning produces, through charcoal air separation 4, isolates particulate matter wherein, and isolated particle is discharged from particulate matter outlet 702; Isolated high-temperature flue gas is disposed to air preheater 8 preheated air by exhanst gas outlet 701.The low-temperature flue gas produced after preheated air carries out fume treatment and discharge by discharge pipe 9.
In the present embodiment, pyrolytic gasification auger 2 is also provided with steam-dump system, steam-dump system comprises pipeline and is connected to steam induced draft fan 201 on pyrolytic gasification auger 2, be arranged on the variable valve 202 on above-mentioned pipeline, and be arranged on the temperature monitor 203 on fluidized bed combustion gas burning furnace 1 furnace wall.In heating artifact matter, free water and Bound moisture evaporate, and by selectively unlocking variable valve 202 after temperature monitor 203, are discharged by steam through steam induced draft fan 201.Object is, by the water vapor produced in biomass drying process being discharged in time, improves biological fuel gas quality.
In the present embodiment, in air compartment 103, be provided with air distribution plate 104.Object is, in the feeding fluidized bed combustion gas burning furnace 1 of the even air after air preheater 8 can being heated, is convenient to complete reaction efficiently.
In the present embodiment, bottom fluidized bed combustion gas burning furnace 1, be provided with slag discharging device 105.Object is, after fluidized bed combustion gas burning furnace 1 reaction can be collected easily, and the waste residue of appearance.
Adopt this device to the production technique of biomass pyrolytic coproduction combustion gas/charcoal, comprise the following steps:
(1), in pyrolytic gasification auger 2, biomass material is added by feeding device 3;
(2), in fluidized bed combustion gas burning furnace 1, bed material is added by bed material feeding device 101;
(3), fluidized bed combustion gas burning furnace 1 is run, the heat obtained that burns is passed to pyrolytic gasification auger 2 by bed material and pyrolytic gasification auger 2 outside surface frictional impact by fluidized bed combustion gas burning furnace 1, biomass material continues to carry pyrolysis, gasification through pyrolytic gasification auger 2, generates high-temperature biomass gas and charcoal; Raw material is separated through charcoal air separation 4 with charcoal by high-temperature biomass gas in pyrolytic gasification auger 2, and isolated biomass charcoal is collected; Isolated high-temperature biomass gas enters high-temperature fuel gas booster fan 5, high-temperature biomass gas output is supplied to other devices by biological fuel gas transfer line 6 and uses or store by high-temperature fuel gas booster fan 5, and high-temperature biomass gas is inputted fluidized-bed fuel gas buring stove 1;
(4), gas blower 10 and air preheater 8 is run, air is sent into air preheater 8 by gas blower 10, the high temperature air exported from air preheater 8 sends into fluidized bed combustion gas burning furnace 1, high temperature air fully contacts with bed material in fluidized bed combustion gas burning furnace 1 with high-temperature biomass gas, stable burning under the surface catalysis of bed material, the heat of burning passes to pyrolytic gasification auger 2 by bed material and pyrolytic gasification auger outside surface frictional impact, and form biomass pyrolysis gasification provides energy; The high-temperature flue gas that burning produces, through charcoal air separation 4, isolates particulate matter wherein, and isolated particle is discharged from particulate matter outlet 702; Isolated high-temperature flue gas is disposed to air preheater 8 preheated air by exhanst gas outlet 701, and the low-temperature flue gas produced after preheated air carries out fume treatment and discharge by discharge pipe 9.
Wherein, the water content of biomass material is not higher than 50%, and biomass size is not more than 10cm.
Wherein, pyrolytic gasification auger 2 discharge of steam temperature is 80-160 DEG C, to ensure that steam is separated out, improves biological fuel gas calorific value.
Wherein, in pyrolytic gasification auger 2, temperature is 500 ~ 750 DEG C, and low temperature pyrogenation gasifies, and avoid basic metal precipitation and cause corrosion, the temperature that the basic metal such as K, Na are separated out in a large number, more than 750 DEG C, effectively reduces the corrosion utilizing equipment to cause to follow-up combustion gas.
Wherein, the temperature of fluidized bed combustion gas burning furnace 1 is 600 ~ 850 DEG C, and in stove, fluidizing velocity is 2 ~ 5m/s, and air preheating temperature is 200 ~ 600 DEG C.
Wherein, bed material is the material of resistance to grinding machine particle, and comprise quartz sand, alumina balls, pyroceramic etc. and have reduction biological fuel gas and the katalysis of tar reaction activity, not easily broken high-temperature resistant particle, particle diameter is 0.5 ~ 5mm.Bed material particle improves the efficiency of roasting kiln to pyrolytic gasification auger 2 septate heat transfer.Bed material particle adds fluidized bed combustion gas burning furnace 1 bottom by bed material feeding device 601, form stabilization fluid bed emulsion zone territory, by the control of bed material grain graininess and intensity, avoid bed material particle to be carried out fluidized bed combustion gas burning furnace 1 by combustion gas, furnace gas speed is 2 ~ 5m/s.
Embodiment 1
By moisture 25%, particle diameter 3cm wooden unit is added in pyrolytic gasification auger 2 by feeding device 3.Pyrolytic gasification auger 2 is by biomass continus convergence, in heating artifact matter, free water and Bound moisture evaporate, by recording temperature after temperature monitor 203, (T1 is 80 DEG C, T2 is 120 DEG C, T3 is 140 DEG C) selectively unlocking variable valve 202 (after T2 variable valve), steam is discharged through steam induced draft fan 201.Biomass material continues to carry pyrolysis through pyrolytic gasification auger 2, gasification generates high-temperature biomass gas and charcoal.Be separated through charcoal air separation 4 with charcoal by high-temperature biomass gas in pyrolytic gasification auger 2 at raw material, isolated biomass charcoal is collected, biomass charcoal fixed carbon content 80.7%; Specific surface area 195m
2/ g, isolated high-temperature biomass gas enters high-temperature fuel gas booster fan 5, high-temperature fuel gas booster fan 5 exports and connects biological fuel gas transfer line 6 and fluidized bed combustion gas burning furnace 1, and high-temperature biomass gas exports by biological fuel gas transfer line 6, gas heating value 5700KJ/Nm
3.Air is sent into air preheater 8 by gas blower 10, and the high temperature air 420 DEG C exported from air preheater 8 sends into fluidized bed combustion gas burning furnace 1.In fluidized bed combustion gas burning furnace 1, bed material is 1.5mm Ceramic Balls, high temperature air and high-temperature biomass gas Thorough combustion in fluidized bed combustion gas burning furnace 1, temperature 750 DEG C in fluidized bed combustion gas burning furnace 1, gas flow rate 3m/s.The heat of burning passes to pyrolytic gasification auger 2, temperature 680 DEG C in pyrolytic gasification auger 2.The high-temperature flue gas that burning produces, through tripping device 7, isolates particulate matter wherein, and isolated particle is discharged from tripping device particulate matter outlet 702; Isolated high-temperature flue gas is disposed to air preheater 8 preheated air by exhanst gas outlet 701.The low-temperature flue gas produced after preheated air carries out fume treatment and discharge by discharge pipe 9.
Embodiment 2
By moisture 15%, particle diameter 2cm rice husk is added in pyrolytic gasification auger 2 by feeding device 3.Pyrolytic gasification auger 2 is by biomass continus convergence, in heating artifact matter, free water and Bound moisture evaporate, by recording temperature after temperature monitor 203, (T1 is 110 DEG C, T2 is 140 DEG C, T3 is 160 DEG C) selectively unlocking variable valve 202 (after unlatching T1 variable valve), steam is discharged through steam induced draft fan 201.Biomass material continues to carry pyrolysis through pyrolytic gasification auger 2, gasification generates high-temperature biomass gas and charcoal.Be separated through charcoal air separation 4 with charcoal by high-temperature biomass gas in pyrolytic gasification auger 2 at raw material, isolated biomass charcoal is collected, biomass charcoal fixed carbon content 46.8%, specific surface area 218m
2/ g; Isolated high-temperature biomass gas enters high-temperature fuel gas booster fan 5, high-temperature fuel gas booster fan 5 exports and connects biological fuel gas transfer line 6 and fluidized bed combustion gas burning furnace 1, high-temperature biomass gas exports by biological fuel gas transfer line 6, gas heating value 4960KJ/Nm
3.Air is sent into air preheater 8 by gas blower 10, and the high temperature air 410 DEG C exported from air preheater 8 sends into fluidized bed combustion gas burning furnace 1.In fluidized bed combustion gas burning furnace 1, bed material is 5mm pyroceramic, high temperature air and high-temperature biomass gas Thorough combustion in fluidized bed combustion gas burning furnace 1, temperature 670 DEG C in fluidized bed combustion gas burning furnace 1, gas flow rate 3.5m/s.The heat of burning passes to pyrolytic gasification auger 2, temperature 625 DEG C in pyrolytic gasification auger 2.The high-temperature flue gas that burning produces, through tripping device 7, isolates particulate matter wherein, and isolated particle is discharged from tripping device particulate matter outlet 702; Isolated high-temperature flue gas is disposed to air preheater 8 preheated air by exhanst gas outlet 701.The low-temperature flue gas produced after preheated air carries out fume treatment and discharge by discharge pipe 9.
Embodiment 3
By moisture 33%, particle diameter 8cm bamboo block is added in pyrolytic gasification auger 2 by feeding device 3.Pyrolytic gasification auger 2 is by biomass continus convergence, in heating artifact matter, free water and Bound moisture evaporate, by recording temperature after temperature monitor 203, (T1 is 60 DEG C, T2 is 102 DEG C, T3 is 120 DEG C) selectively unlocking variable valve 202 (after unlatching T3 variable valve), steam is discharged through steam induced draft fan 201.Biomass material continues to carry pyrolysis through pyrolytic gasification auger 2, gasification generates high-temperature biomass gas and charcoal.Be separated through charcoal air separation 4 with charcoal by high-temperature biomass gas in pyrolytic gasification auger 2 at raw material, isolated biomass charcoal is collected, biomass charcoal fixed carbon content 82.3%, specific surface area 195m
2/ g; Isolated high-temperature biomass gas enters high-temperature fuel gas booster fan 5, high-temperature fuel gas booster fan 5 exports and connects biological fuel gas transfer line 6 and fluidized bed combustion gas burning furnace 1, high-temperature biomass gas exports by biological fuel gas transfer line 6, gas heating value 5820KJ/Nm
3.Air is sent into air preheater 8 by gas blower 10, and the high temperature air 415 DEG C exported from air preheater 8 sends into fluidized bed combustion gas burning furnace 1.In fluidized bed combustion gas burning furnace 1, bed material is 4mm alumina balls, high temperature air and high-temperature biomass gas Thorough combustion in fluidized bed combustion gas burning furnace 1, temperature 730 DEG C in fluidized bed combustion gas burning furnace 1, gas flow rate 4m/s.The heat of burning passes to pyrolytic gasification auger 2, temperature 655 DEG C in pyrolytic gasification auger 2.The high-temperature flue gas that burning produces, through tripping device 7, isolates particulate matter wherein, and isolated particle is discharged from tripping device particulate matter outlet 702; Isolated high-temperature flue gas is disposed to air preheater 8 preheated air by exhanst gas outlet 701.The low-temperature flue gas produced after preheated air carries out fume treatment and discharge by discharge pipe 9.
Technique of the present invention is as from the foregoing:
Biomass technical analysis angle, can be divided into volatile matter and fixed carbon two portions, in order to obtain high-quality biological charcoal, most ideal response state be by as far as possible under the condition of anoxic heating biological matter make biomass pyrolytic, gasification, avoid the loss of fixed carbon.
The energy pyrolysis that the septate heat transfer that in the present invention, biomass pass through high-temperature flue gas in fluidized bed combustion gas burning furnace in pyrolytic gasification auger transmits, gasification.Do not add vaporized chemical in pyrolysis, gasification, reaction occurs in relatively airtight space, and in biomass, fixed carbon loss is minimum.The water vapor produced is discharged by pyrolysis, gasification reaction initial stage, substantially increases the calorific value of biological fuel gas.The high-temperature biological department of fuel gas that pyrolytic gasification produces is divided into into the burning of fluidized-bed fuel gas buring stove, and the high temperature of burning for biomass pyrogenation gasification in pyrolytic gasification auger provides energy, ensures pyrolysis, the carrying out continually and steadily of gasification reaction by heat exchange between wall; Major part biological fuel gas is exported by biological fuel gas transfer line, and be supplied to other devices and use or store, system efficiency is high.
In the higher situation of biomass material moisture content, the biological fuel gas calorific value that gasification produces only has about 2000kJ/Nm3, adopts conventional combustion manner to burn.Utilize biological fuel gas to be the hot combustion gas feature of more than 400 DEG C in the present invention, directly hot combustion gas is passed into the fluidized bed combustion gas burning furnace of band catalyticcombustion effect bed material, pass into the high temperature air of preheating simultaneously, realize the thorough after-flame of fuel gas with low heat value.The energy that fuel gas with low heat value burning produces is used in pyrolytic gasification auger with high heat transfer coefficient and is absorbed by air preheater, improves system efficiency.
The above is only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. biomass pyrolytic coproduction combustion gas/charcoal device, it is characterized in that: comprise fluidized bed combustion gas burning furnace, pyrolytic gasification auger is provided with in the body of heater of fluidized bed combustion gas burning furnace, the entrance end of pyrolytic gasification auger is provided with feeding device, exit end is provided with charcoal air separation, charcoal air separation is connected to the ingress of high-temperature fuel gas booster fan, the exit end of high-temperature fuel gas booster fan respectively pipeline is connected on fluidized bed combustion gas burning furnace and biological fuel gas transfer line, fluidized bed combustion gas burning furnace sidewall is provided with bed material feeding device and reactant exports, the bottom of fluidized bed combustion gas burning furnace is provided with air compartment, reactant outlet is connected with the entrance end of tripping device, tripping device offers exhanst gas outlet and particulate matter outlet, exhanst gas outlet is connected on air preheater, air preheater connects discharge pipe, air preheater side is also connected with gas blower, opposite side is connected with the air compartment bottom fluidized bed combustion gas burning furnace.
2. a kind of biomass pyrolytic coproduction combustion gas/charcoal device according to claim 1, it is characterized in that: described pyrolytic gasification auger is also provided with steam-dump system, steam-dump system comprises pipeline and is connected to steam induced draft fan on pyrolytic gasification auger, be arranged on the variable valve on above-mentioned pipeline, and be arranged on the temperature monitor on fluidized bed combustion gas burning furnace furnace wall.
3. a kind of biomass pyrolytic coproduction combustion gas/charcoal device according to claim 1 and 2, is characterized in that: be provided with air distribution plate in described air compartment.
4. a kind of biomass pyrolytic coproduction combustion gas/charcoal device according to claim 1 and 2, is characterized in that: be provided with slag discharging device bottom described fluidized bed combustion gas burning furnace.
5. a production technique for biomass pyrolytic coproduction combustion gas/charcoal, adopts a kind of biomass pyrolytic coproduction combustion gas/charcoal device to produce, it is characterized in that: comprise the following steps:
(1), in pyrolytic gasification auger, biomass material is added by feeding device;
(2), in fluidized bed combustion gas burning furnace, bed material is added by bed material feeding device;
(3), fluidized bed combustion gas burning furnace is run, the heat obtained that burns is passed to pyrolytic gasification auger by bed material and pyrolytic gasification auger outside surface frictional impact by fluidized bed combustion gas burning furnace, biomass material continues, through pyrolytic gasification auger conveying pyrolysis, gasification, to generate high-temperature biomass gas and charcoal; Raw material is separated through charcoal air separation with charcoal by high-temperature biomass gas in pyrolytic gasification auger, and isolated biomass charcoal is collected; Isolated high-temperature biomass gas enters high-temperature fuel gas booster fan, high-temperature biomass gas output is supplied to other devices by biological fuel gas transfer line and uses or store by high-temperature fuel gas booster fan, and high-temperature biomass gas is inputted fluidized-bed fuel gas buring stove;
(4), gas blower and air preheater is run, air is sent into air preheater by gas blower, the high temperature air exported from air preheater sends into fluidized bed combustion gas burning furnace, high temperature air fully contacts with bed material in fluidized bed combustion gas burning furnace with high-temperature biomass gas, stable burning under the surface catalysis of bed material, the heat of burning passes to pyrolytic gasification auger by bed material and pyrolytic gasification auger outside surface frictional impact, and form biomass pyrolysis gasification provides energy; The high-temperature flue gas that burning produces, through charcoal air separation, isolates particulate matter wherein, and isolated particle is discharged from particulate matter outlet; Isolated high-temperature flue gas is disposed to air preheater preheated air by exhanst gas outlet, and the low-temperature flue gas produced after preheated air carries out fume treatment and discharge by discharge pipe.
6. the production technique of a kind of biomass pyrolytic coproduction combustion gas/charcoal according to claim 5, is characterized in that: the water content of described biomass material is not higher than 50%, and biomass size is not more than 10cm.
7. the production technique of a kind of biomass pyrolytic coproduction combustion gas/charcoal according to claim 5 or 6, is characterized in that: described pyrolytic gasification auger discharge of steam temperature is 80-160 DEG C.
8. the production technique of a kind of biomass pyrolytic coproduction combustion gas/charcoal according to claim 5 or 6, is characterized in that: in described pyrolytic gasification auger, temperature is 500 ~ 750 DEG C.
9. the production technique of a kind of biomass pyrolytic coproduction combustion gas/charcoal according to claim 5 or 6, it is characterized in that: the temperature of described fluidized bed combustion gas burning furnace is 600 ~ 850 DEG C, in stove, fluidizing velocity is 2 ~ 5m/s, and air preheating temperature is 200 ~ 600 DEG C.
10. the production technique of a kind of biomass pyrolytic coproduction combustion gas/charcoal according to claim 5 or 6, it is characterized in that: described bed material is the material of the resistance to grinding machine particle of band catalyticcombustion effect, comprise quartz sand, alumina balls, pyroceramic, particle diameter is 0.5 ~ 5mm.
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| CN201510812456.2A CN105273731B (en) | 2015-11-19 | 2015-11-19 | A kind of biomass pyrolytic coproduction combustion gas/biology charcoal producing technique |
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| CN106281377A (en) * | 2016-09-30 | 2017-01-04 | 赵理 | Biomass continuous pyrolysis generator |
| CN106801862A (en) * | 2017-03-15 | 2017-06-06 | 张守军 | A kind of carbon-containing fuel efficient burning coupled electricity-generation method |
| CN107033973A (en) * | 2017-05-26 | 2017-08-11 | 中国林业科学研究院林产化学工业研究所 | A kind of inside and outside hot integral biomass revolution pyrolytic gasification equipment and application |
| CN109134151A (en) * | 2018-10-16 | 2019-01-04 | 合肥德博生物能源科技有限公司 | A kind of fluidized bed biomass carbon prepares charcoal base organic fertilizer recycling device and method |
| CN109628157A (en) * | 2018-12-11 | 2019-04-16 | 华中科技大学 | A kind of continuous biomass pyrolysis gasifying device and method |
| CN115197727A (en) * | 2022-08-12 | 2022-10-18 | 昆明理工大学 | Treatment method and treatment device for repairing contaminated soil through biomass pyrolysis and carbonization |
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| CN115197727A (en) * | 2022-08-12 | 2022-10-18 | 昆明理工大学 | Treatment method and treatment device for repairing contaminated soil through biomass pyrolysis and carbonization |
| CN115197727B (en) * | 2022-08-12 | 2024-01-16 | 昆明理工大学 | Treatment method and treatment device for restoring polluted soil by biomass pyrolysis and carbonization |
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