CN105779009A - Biomass gasifying device, system and technology - Google Patents
Biomass gasifying device, system and technology Download PDFInfo
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- CN105779009A CN105779009A CN201610255265.5A CN201610255265A CN105779009A CN 105779009 A CN105779009 A CN 105779009A CN 201610255265 A CN201610255265 A CN 201610255265A CN 105779009 A CN105779009 A CN 105779009A
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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
- C10J3/46—Gasification of granular or pulverulent flues in suspension
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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
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
-
- 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
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
-
- 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
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- 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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0903—Feed preparation
- C10J2300/0906—Physical processes, e.g. shredding, comminuting, chopping, sorting
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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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0903—Feed preparation
- C10J2300/0909—Drying
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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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0916—Biomass
- C10J2300/092—Wood, cellulose
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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
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of biomass utilization, in particular to a biomass gasifying device, system and technology. The device comprises a gasifying reactor, a first cyclone separator, a second cyclone separator, a combustible gas combustion device and an ash discharge mechanism. The system comprises a drying device, a first conveying mechanism, a first storage warehouse, a second conveying mechanism, a second storage warehouse, a helical transporting device and the biomass gasifying device. The biomass gasifying device disclosed by the invention is fast in reactions and high in gasifying efficiency, and the obtained combustible gas can be directly used.
Description
Technical field
The present invention relates to biomass utilization technologies field, be specifically related to a kind of biomass gasification device, system and gasifying process.
Background technology
Under facing the background that Fossil fuel is exhausted, the strategy of sustainable development all seeking with recycling economy, the ecological economy for instructing, is adhered in the whole world.Biomass energy is a kind of desirably regenerative resource; owing to the clean discharge capacity of the carbon dioxide of air is similar to zero by combustion; from protection mankind's natural resources, ecological environment, it is possible to substantially effectively utilize biomass to be converted into the fuel of routine to replace fossil energy.
Biomass gasification technology is a kind of energy in biomass to be converted into combustible gas, the high-grade fuel gas generated both directly can use for producing, living, internal combustion engine or gas turbine power generation can also be passed through, carry out cogeneration of heat and power alliance, thus the high-efficiency cleaning realizing biomass utilizes.
The technology path that gasification of biomass adopts is of a great variety, can from different angles it be classified.Can be divided into pyrolytic gasification and reactive gasification according to combustion-gas jet test mechanism, latter of which can be subdivided into again the gasification of the mixture of air gasification, steam gasification, oxygen gasified, hydrogen and these gases thereof according to the difference of reaction atmosphere.Difference according to the gasification reactor adopted can be divided into again fixed bed gasification, fluidized gasification and entrained flow gasification.Reactive gasification is generally with timber, crops, house refuse for raw material or blended with coal dust, utilize air, pure oxygen, air/water steam or oxygen/water steam as gasifying agent, there is a series of thermal chemical reaction when high temperature, produce the process of the fuel gas being main component with CO, H2 or CH4.
The slurry factory of paper industry all can produce a large amount of by-product biomass every day---bark and wood flour, have a daily output of the slurry factory of 5000ADT/D according to statistics, if all using wood chip of autotomying, then producing bark and be about 2700t/d (65%MC), wood flour is about 1800t/d (55%MC).At present these biomass are all send into directly to burn in boiler, and value is low, also insufficient can cause environmental pollution because burning.Alkali collection workshop, pulp mill all can configure one or more limekiln production line simultaneously, and limekiln is pulp mill's consumption of fossil fuels the first rich and influential family.For 800t/d limekiln production line, consumption of fossil fuels heavy oil is about 130t/d, or natural gas is about 145000Nm3/d.
In consideration of it, overcome above defect of the prior art, it is provided that a kind of new biomass gasification device and gasifying process become the technical problem that this area is urgently to be resolved hurrily.
Summary of the invention
Present invention aims to the drawbacks described above of prior art, it is provided that a kind of biomass gasification device and gasifying process.
The purpose of the present invention can be realized by following technical measures:
A kind of biomass gasification device, compared with prior art, it is different in that, this device includes:
Gasification reactor, it has the reaction chamber that biomass carry out gasification reaction under the mixed-gas atmosphere of air atmosphere, oxygen atmosphere or air and steam, described reactor lower part offers material inlet and air outlet, and the top of described reactor is provided with combustible gas outlet；
Exported the first cyclone separator connected with described gasification reactor by combustible gas, it is for separating the solid impurity in combustible gas, and the bottom of described cyclone separator is connected with the bottom of described gasification reactor by a reflux pipe；And
With the second cyclone separator that described first cyclone separator is connected, it is for separating the solid impurity in combustible gas.
Preferably, this device also includes:
The combustible gas burner being connected with described second cyclone separator, described combustible gas burner internal pressure is less than gasification reactor internal pressure.
Preferably, described reaction chamber inwall is provided with the refractory layer formed by refractory material.
Preferably, described reactor bottom is provided with ash exhauster.
Preferably, described second cyclone separator top is connected to the first pipeline for discharging combustible gas, and the bottom of described second cyclone separator is connected to the second pipe for discharging flying dust.
Present invention also offers a kind of biomass gasification system, including:
Above-mentioned biomass gasification device；
For the drying device that biomass material is dried；
For storing the first storage warehouse of the biomass material that drying processes, it is connected with drying device by the first conveying mechanism；
For storing the second storage warehouse of heat carrier material；And
Being located at the helix transporting device of gasification reactor material inlet, it is for being delivered to the mixed material that the heat carrier material in the biomass material in the first storage warehouse and the second storage warehouse is formed in reactor.
Preferably, described first storage warehouse is connected with described helix transporting device by second conveyor structure.
Invention additionally provides a kind of biogas metallization processes, this technique comprises the steps:
It is mixed to form biomass material with wood flour after being pulverized by bark；
Biomass material is dried；
Undertaken gasifying to prepare fuel gas by the biomass material of drying；With
Gained fuel gas is carried out gas solid separation to remove solid impurity therein.
Preferably, in biomass material drying steps, the biomass material moisture content of drying is 10%～15%.
Preferably, in biomass material gasification step, gasification temperature is 700 DEG C～900 DEG C.
The biomass gasification device reaction of the present invention is fast, gasification efficiency is high, and gained combustible gas can directly use.
Accompanying drawing explanation
Fig. 1 is the structural representation of the biomass gasification device of the present invention.
Fig. 2 is the structural representation of the biomass gasification system of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
Hereinafter, reference accompanying drawing is more fully understood that many aspects of the present invention.Parts in accompanying drawing are not necessarily drawn to scale.Alternatively, it is preferred that emphasis is clearly demonstrate the parts of the present invention.Additionally, in some views in the accompanying drawings, identical accompanying drawing labelling indicates corresponding part.
" exemplary " or " illustrative " represents as example, example or explanation as used herein, the word.It is preferred or favourable for being described herein as that any embodiment of " exemplary " or " illustrative " is not necessarily to be construed as relative to other embodiment.All embodiments described below are illustrative embodiments, thering is provided these illustrative embodiments is that the scope of the present disclosure is defined by the claims so that those skilled in the art make and use embodiment of the disclosure and expect and be not limiting as the scope of the present disclosure.In other embodiments, describe in detail the feature known and method not obscure the present invention.For purpose described herein, term " on ", D score, "left", "right", "front", "rear", " vertically ", " level " with its derivative words by relevant for the invention directed with such as Fig. 1.And, have no intent to be subject to any theoretical restriction expressed or imply provided in technical field above, background technology, summary of the invention or detailed description below.Should also be clear that shown in the drawings and concrete device described in discussion below book and process are the simple examples embodiments of the inventive concept limited in the following claims.Therefore, the concrete size relevant to presently disclosed embodiment and other physical features are understood not to restrictive, unless claims are separately stated clearly.
Fig. 1 illustrates biomass gasification device 100, comprising: gasification reactor the 10, first cyclone separator the 20, second cyclone separator 30, combustible gas burner 40 and ash exhauster 50.
Wherein, gasification reactor 10 has reaction chamber 10a, and reactor 10 bottom offers material inlet 11 and air outlet 12 respectively, and the top of reactor is provided with combustible gas outlet 13.
Enter reactor from bottom after biomass material and heating carrier mixing, one air supply system carries gasifying gas (the mixing gas of air, oxygen or air and steam) by an outside blowing device to reactor, the mixture of biomass material and heating carrier is fluidization under blowing effect, and at high temperature dry rapidly, first there is pyrolysis, discharge hot pyrolysis gas, charcoal granule, tar, contact with gasifying gas, there is gas reforming reaction immediately, cracked gas is restructured as CO, H2、CH4、CO2、H2O、N2Combustible gas for main component.Composition and ratio thereof that combustible gas is final are relevant with the composition of gasifying gas, for instance, if containing steam in gasifying gas, hot pyrolysis gas can be restructured as the gas rich in hydrogen.In pelletized form or block, heat carrier material is known as again bed to heat carrier, generally can use limestone (CaCO3) or sand, heat carrier mixes with biomass material, the heat of absorption is passed to biomass material, heat transfer and the fluidization of biomass material can not only be ensured, it can also be ensured that ensure the stable operation of circle fluidized-bed gasification furnace when fuel quantity generation larger fluctuation.
The gasifying gas (air, oxygen or mixing water steam) that air supply system provides be the reaction for biomass material and the mixture making biomass material and heat carrier in reaction chamber 10a in fluidization, air supply system is generally made up of blower fan, airduct.The gasifying gas such as air can preheat as required.Such as, aerator is high pressure unit radial fan, and by grid, gasifying gas is sent into gasification reactor 10.Blower fan regulates air quantity by converter or by inlet baffle；Also the air through this blower fan is used when starting burner.In order to enable to stop rapidly air feed, blower fan airduct below is furnished with closable baffle plate.
Gasification reactor 10 can be gasification furnace, gasification (cracking and reformation) institute's calorific requirement is provided by the partial oxidation of biomass material, running does not need external heat, only need to burn light diesel with lighter when gasification starts, the reaction chamber 10a of preheating gasification reactor 10, creates conditions for biomass material gasification.Carrying out temperature control by regulating the mixing ratio of gasification wind supply quantity and biomass material and heat carrier, the reaction cavity temperature of gasification reactor remains unchanged substantially；The yield of combustible gas then is controlled to determine by the inlet of biomass material；Fluidised speed depends on the load of gasification reactor 10, and fluidizing velocity affects the dust content in combustible gas and the performance of cyclone separator at different levels.Gasifying gas enters in gasification reactor 10 by air distribution plate, and air distribution plate can ensure that mixed material is fluidization in reaction chamber 10a.
Ash exhauster 50 is to get rid of the ashes produced in gasification reactor 10, mainly comprising water-cooled ash discharge spiral, slip push-pull valve and ash silo.The thick ashes main component of gasification reactor 10 is siege material, fuel ashes and the impurity entered with fuel, and these ashes are discharged by the ash exhauster 50 bottom gasification furnace.
Biomass gasification device 100 can be configured to circle fluidized-bed gasification furnace, can change into combustible gas by circle fluidized-bed gasification furnace biomass material, and above-mentioned gasification furnace runs under positive pressure, and running temperature is 700～900 DEG C.
First cyclone separator 20 is connected with gasification reactor 10 by combustible gas outlet, and for separating the solid impurity in combustible gas, the bottom of the first cyclone separator 20 is connected with the bottom of gasification reactor 10 by a reflux pipe 21.Separating, from gasification reactor 10 combustible gas out, the solid particle (such as carbon granule, siege material and flying dust) carried combustion gas with the first cyclone separator 20, bottom the first cyclone separator 20, isolated solid particle sends gasification reactor back to by a reflux pipe 21.
Reflux pipe 21 may be constructed such that feed back lower limb, is a return duct being lined with refractory material, and one section is connected on the sidewall of the first cyclone separator 10 cone, and the other end is connected to the bottom of gasification reactor 10.
Second cyclone separator 30 is connected with the first cyclone separator 20, and it is for separating the solid impurity in combustible gas.Combustible gas to be finally admitted in the burner of limekiln by combustible gas air supply plant 40 and use, first cyclone separator 30 can reduce the flying dust accumulation in Calx cyclic production process to greatest extent, reclaim unreacted carbon granule and high temperature bed, purify the follow-up combustible gas that will enter limekiln burner.Second cyclone separator 30 can be the heavy separator having refractory lining, further, can pass through conveying worm cooling output from the second isolated flying dust of cyclone separator 30.
Combustible gas burner 40 internal pressure is less than gasification reactor 10 internal pressure, that is, combustible gas burner 40 is tiny structure environment relative to gasification reactor 10, pressure in gasification reactor 10 is 1-30Kpa (g), it is produced without being sent directly into combustible gas burner 40 through the high-temperature combustible gas of cooling by gasification by pressure differential, combustible gas burner 40 can be application stove or gasification furnace, such as, it can be boiler, limekiln, the pressure of combustible gas burner 40 is negative pressure 50-500Pa (g), compared with device of the prior art or system, eliminate combustible gas cooling step, tar removing step and ventilating device, improve combustible gas calorific value simultaneously.
Reaction chamber 10a inwall is provided with the refractory layer formed by refractory material.The reaction chamber 10a bottom of gasification reactor 10 is heat carrier and the fluid bed furnace bed of thick fuel carbon granule composition, and the mixture of biomass material and heat carrier formation enters in the reaction chamber 10a of gasification reactor 10 above above-mentioned fluid bed furnace bed.Ash exhauster 50 is located at the bottom of reactor 10.Second cyclone separator 30 top is connected to the first pipeline 31 for discharging combustible gas, and the bottom of the second cyclone separator 30 is connected to the second pipe 32 for discharging flying dust.
Biomass material and heat carrier carry out from the bottom of gasification reactor 10, and along with gasifying gas flows up in reaction chamber 10a, the combustible gas that gasification produces is discharged from the top of gasification reactor 10.
Fig. 2 illustrates biomass gasification system 200, and this system includes: drying device the 201, first conveying mechanism the 202, first storage warehouse 203, second conveyor structure the 205, second storage warehouse 204, helix transporting device 206 and biomass gasification device 100.
Wherein, drying device 201 is for being dried biomass material.First storage warehouse 203 is for storing the biomass material that drying processes, and it is connected with drying device 201 by the first conveying mechanism 202.Second storage warehouse 204 is used for storing heat carrier material.Helix transporting device 206 is located at the material inlet 11 of the gasification reactor 10 of biomass gasification device 100, and it is for being delivered to the mixed material that the heat carrier material in the biomass material in the first storage warehouse 203 and the second storage warehouse 204 is formed in reactor 10.
First storage warehouse 203 and the second storage warehouse 204 are equipped with apparatus for measuring charge level, and the consumption of heat carrier depends on the amount of biomass material and the service condition of gasification installation 100.In emergency circumstances, the traverse on helix transporting device 206 can isolate gasification installation and helix transporting device 206, it is prevented that the combustible gas in gasification installation enters into helix transporting device 206.
Further, the first storage warehouse 203 is connected with helix transporting device 206 by second conveyor structure 205.
Correspondingly, the embodiment of the present invention additionally provides a kind of biogas metallization processes, applies above-mentioned gasification installation 100 and gasification system 200 carries out gasification of biomass, and this technique comprises the steps:
It is mixed to form biomass material with wood flour after being pulverized by bark；
Biomass material is dried；
Undertaken gasifying to prepare fuel gas by the biomass material of drying；With
Gained fuel gas is carried out gas solid separation to remove solid impurity therein.
It is mixed to form in biomass material step with wood flour after bark is pulverized, first bark is sequentially carried out pulverizing, screening, storage, conveying: slurry factory in bark be usually in timber peeling operation produce, because size-reduced could being used for of the bigger need of bark particle diameter of peeling machine output is gasified.The bark received from peeling machine first has to, through self-cleaning electric magnetic iron remover, separate the ironware impurity in the middle of bark；Being then fed into bark shredder, broken particle diameter performs according to relevant criterion；Bark after pulverizing needs to sieve with riddle, and the earth impurity that to be eliminated as much as in bark more, the riddle interfacial gap 5mm of screening, the powder screened out can be sent to existing boiler combustion and utilize.As required can newly-built bark heap or melt pit store slow storehouse as bark temporarily.
The tiny wood flour (general particle diameter≤16mm) that slurry factory slicing workshop filters out, need not pulverize and sieve when being used for gasifying, as required newly-built wood flour storage silo.
Bark after pulverizing and wood flour are mixed, delivers to drying device 201 by conveying equipment.
In biomass material drying steps, the biomass material moisture content of drying is 10%～15%.
When drying system 201 is dried, owing to the moisture of bark and wood flour is generally about 45-65%, and dustiness is higher, dry run is susceptible to dust disaster, therefore (biomass temperature is less than 90 DEG C for the drying device suggestion use low-temperature drier of dried biomass, dryer inner temperature is less than 110 DEG C), biomass are dried to the moisture content of about 15%.Because needing the biological quality dried huge, it is recommended to use treating capacity is big, control belt drying machine simple, that power consumption is less (by adding hot-air, make hot-air through the material above conveyer belt, thus the biomass on dry and heating belt).
In biomass material gasification step, enter reactor from bottom after biomass material and heating carrier mixing, one air supply system carries gasifying gas (the mixing gas of air, oxygen or air and steam) by an outside blowing device to reactor, the mixture of biomass material and heating carrier is fluidization under blowing effect, and at high temperature dry rapidly, first there is pyrolysis, discharge hot pyrolysis gas, charcoal granule, tar, contact with gasifying gas, there is gas reforming reaction immediately, cracked gas is restructured as CO, H2、CH4、CO2、H2O、N2Combustible gas for main component.Composition and ratio thereof that combustible gas is final are relevant with the composition of gasifying gas, for instance, if containing steam in gasifying gas, hot pyrolysis gas can be restructured as the gas rich in hydrogen.Heat carrier is in pelletized form or block, generally can use limestone or sand, heat carrier mixes with biomass material, the heat of absorption is passed to biomass material, heat transfer and the fluidization of biomass material can not only be ensured, it can also be ensured that ensure the stable operation of circle fluidized-bed gasification furnace when fuel quantity generation larger fluctuation.Gasification temperature is 700 DEG C～900 DEG C.
Remove the combustible gas after solid impurity can directly use, for instance, combustible gas burner 40 is set, compared with device of the prior art or system, eliminates combustible gas cooling step, tar removing step and ventilating device, improve combustible gas calorific value simultaneously.Gained fuel gas is carried out gas solid separation and is completed by the first cyclone separator in above-mentioned gasification installation 100 and the second cyclone separator to remove solid impurity step therein.
Above-mentioned biogas metallization processes has the advantages that, associative list 1 and table 2:
Scale is big, and treating capacity is up to 40t/h, and domestic at present not have unit and enterprise to do so large-scale；
Gasification efficiency is high, and we can reach about 90% by gasification efficiency；
500-800 DEG C of high-temperature fuel gas is directly applied, thus general less than 200 DEG C of tar adiabatic condensation temperature, therefore the operation removing tar need not be set, and improve the calorific value of combustion gas；
During application, combustion gas is applied to combustion furnace by pressure effect and arranges blower fan at stove afterbody, controls the flow velocity of combustion gas to a certain extent.System common at present is all send into application system, complex process by reduction fuel gas temperature blower fan, has certain environment to pollute, reduces the utilization ratio of combustion gas.
Table 1 gasification reaction result
Table 2 combustible gas component list
| Combustible gas composition | Content range |
| CO vol-% | 9～16 |
| CO2Vol-% | 13～17 |
| H2Vol-% | 10～16 |
| H2O vol-% | 9～17 |
| CH4Vol-% | 2～5.5 |
| N2Vol-% | 34～50 |
| CXHYVol-% | 1～3 |
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (10)
1. a biomass gasification device, it is characterised in that this device includes:
Gasification reactor, it has the reaction chamber that biomass carry out gasification reaction under the mixed-gas atmosphere of air atmosphere, oxygen atmosphere or air and steam, described reactor lower part offers material inlet and air outlet, and the top of described reactor is provided with combustible gas outlet；
Exported the first cyclone separator connected with described gasification reactor by combustible gas, it is for separating the solid impurity in combustible gas, and the bottom of described cyclone separator is connected with the bottom of described gasification reactor by a reflux pipe；And
With the second cyclone separator that described first cyclone separator is connected, it is for separating the solid impurity in combustible gas.
2. slurry factory according to claim 1 biomass gasification device, it is characterised in that this device also includes:
The combustible gas burner being connected with described second cyclone separator, described combustible gas burner internal pressure is less than described gasification reactor internal pressure.
3. slurry factory according to claim 1 biomass gasification device, it is characterised in that described reaction chamber inwall is provided with the refractory layer formed by refractory material.
4. slurry factory according to claim 1 biomass gasification device, it is characterised in that described reactor bottom is provided with ash exhauster.
5. slurry factory according to claim 1 biomass gasification device, it is characterised in that described second cyclone separator top is connected to the first pipeline for discharging combustible gas, and the bottom of described second cyclone separator is connected to the second pipe for discharging flying dust.
6. a biomass gasification system, it is characterised in that this system includes:
Biomass gasification device described in any one of claim 1 to 5；
For the drying device that biomass material is dried；
For storing the first storage warehouse of the biomass material that drying processes, it is connected with drying device by the first conveying mechanism；
For storing the second storage warehouse of heat carrier material；And
Being located at the helix transporting device of gasification reactor material inlet, it is for being delivered to the mixed material that the heat carrier material in the biomass material in the first storage warehouse and the second storage warehouse is formed in reactor.
7. the biomass gasification system according to claim, it is characterised in that described first storage warehouse is connected with described helix transporting device by second conveyor structure.
8. a biogas metallization processes, it is characterised in that this technique comprises the steps:
It is mixed to form biomass material with wood flour after being pulverized by bark；
Biomass material is dried；
Undertaken gasifying to prepare fuel gas by the biomass material of drying；With
Gained fuel gas is carried out gas solid separation to remove solid impurity therein.
9. biogas metallization processes according to claim 8, it is characterised in that in biomass material drying steps, the biomass material moisture content of drying is 10%～15%.
10. biogas metallization processes according to claim 8, it is characterised in that in biomass material gasification step, gasification temperature is 700 DEG C～900 DEG C.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338075A (en) * | 2017-08-16 | 2017-11-10 | 华中科技大学 | A kind of system of gasification of biomass co-producing hydrogen and porous carbon materials |
| CN107711104A (en) * | 2017-09-24 | 2018-02-23 | 苏州雷度生物科技有限公司 | A kind of biomass material cuts carbonizing plant |
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| CN107711104A (en) * | 2017-09-24 | 2018-02-23 | 苏州雷度生物科技有限公司 | A kind of biomass material cuts carbonizing plant |
| CN109609197A (en) * | 2019-01-16 | 2019-04-12 | 中国石油大学(华东) | Biomass Gasification in Circulating Fluidized Bed and high temperature tar removing dedusting integration process |
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