CN101560410B - Counter flow type biomass gasification furnace - Google Patents

Counter flow type biomass gasification furnace Download PDF

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Publication number
CN101560410B
CN101560410B CN 200910116780 CN200910116780A CN101560410B CN 101560410 B CN101560410 B CN 101560410B CN 200910116780 CN200910116780 CN 200910116780 CN 200910116780 A CN200910116780 A CN 200910116780A CN 101560410 B CN101560410 B CN 101560410B
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CN
China
Prior art keywords
fuel gas
furnace
chamber
combustion
combustion gas
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Expired - Fee Related
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CN 200910116780
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Chinese (zh)
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CN101560410A (en
Inventor
马培勇
唐志国
孟抒
邢献军
吴正仓
林其钊
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ANHUI XIYANG YANGXI NEW ENERGY AND TECHNOLOGY Co Ltd
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ANHUI XIYANG YANGXI NEW ENERGY AND TECHNOLOGY Co Ltd
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Priority to CN 200910116780 priority Critical patent/CN101560410B/en
Publication of CN101560410A publication Critical patent/CN101560410A/en
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Publication of CN101560410B publication Critical patent/CN101560410B/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/16Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
    • Y02E20/18Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]

Abstract

The invention belongs to the technical field of biomass energy utilization and particularly relates to a device for using biomass to prepare fuel gas. The furnace comprises a furnace door, a grate, anair inlet, a furnace cover, a storage bin, a fuel gas primary outlet, a fuel gas collection chamber, a combustion chamber, a fuel gas secondary outlet, a reduction chamber, a fuel gas tertiary outlet , an ash bin and a furnace wall. The furnace is characterized in that the sides of the storage bin and the reduction chamber form the fuel gas collection chamber together with the furnace wall and thefuel gas is led not to pass through a combustion zone but directly to a reduction zone. As the fuel gas does not pass through the combustion zone and does not mix and combust with the air in the comb ustion zone, the present technical difficulty of easy burn of downdraft is solved; besides, with the fuel gas passing through the reduction zone, tar contained in the fuel gas can be further converted, thus reducing the tar content in the biomass fuel gas and improving the inversion rate and the thermal value of the fuel gas simultaneously. The counter flow type biomass gasification furnace has the advantages of small resistance, high conversion rate, easy gas production, low tar content and the like, can be used for producing fuel gas through various biomasses such as straw, rice hulls, saw dust, peanut shells and the like, and is applicable to rural families.

Description

Counter flow type biomass gasification furnace
Technical field:
The invention belongs to the biomass energy utilization technologies field, particularly adopt biomass to prepare the device of combustion gas.
Background technology:
Biomass gasification technology can solve the problem of environmental pollution that the rural energy utilising efficiency is low, the improper disposal of residue stalk causes to a great extent.At present, biomass gasifying furnace has two types of fixed bed, fluidized-beds.Wherein, fixed-bed gasification furnace because of its have simple in structure, make easy, cheap, processing ease, be applicable to advantages such as bulk and macrobead raw material.Fixed-bed gasification furnace mainly contains two kinds of updraft type and lower suction types.For the updraft type vapourizing furnace, it is slow to have an aerogenesis, and the tar of generation is many, burn easily empty, built on stilts, filler shortcoming such as waste time and energy.The existence of tar has many-sided disadvantageous effect to gasification, and at first it has reduced gasification efficiency, and the energy of the coal-tar middle oil product that gasifies generally accounts for 5~15% of total energy; This part energy is when low temperature, to be difficult to be utilized with inflammable gas; Major part is wasted, and secondly tar is condensed into liquid state when low temperature, and easy and water, coke etc. combine; Stifled air duct makes the equipment for gasification operation that difficulty take place.In addition, the tar that is condensed into fine drop is difficult to burn than gas, when burning, is easy to generate particles such as carbon black, utilizes equipment damage quite serious to combustion gas.So to the tar that gasification produces, take way usually: one adds refining plant, as, Chinese patent ZL200320114184.1 biomass gasifying furnace, ZL200520050543.0 biomass gasifying furnace tar purifying device; Or adopt the lower suction type vapourizing furnace, and combustion gas and tar that pyrolysis is produced pass through high temperature combustion zone and reduction zone, make tar cracking under hot conditions, become inflammable gas, like Chinese patent ZL98243726.9, and the lower suction type biomass gasifying furnace.Yet the updraft type vapourizing furnace adds refining plant and has caused manufacturing cost to improve relatively.The lower suction type vapourizing furnace will pass through laryngeal structure because of the combustion gas that produces, and produces a large amount of gases in this zone simultaneously; Gas flow rate increases, and has solid materials in the passage, and the gas flow resistance increases; Consumed power increases; And causing pyrolysis zone pressure to increase, top opening for feed sealing difficulty is prone to smolder; Simultaneously; Because of the inflammable gas that generates passes through the combustion zone; If furnace binding design is unreasonable or material performance changes or throat's material stops up and causes the top material not to be prone to grill thoroughly during the supply combustion zone with air distribution, to conditional request harshnesses such as furnace binding design and air distribution, material performances.
Summary of the invention:
In order to overcome present the problems referred to above; The present invention changes the structure of existing fixed bed updraft type and lower suction type vapourizing furnace; Design a kind of novel counter flow type biomass gasification furnace, when having both the advantage of updraft type and lower suction type vapourizing furnace, can effectively reduce the problem that both exist.Counter flow type biomass gasification furnace of the present invention comprises fire door, fire grate, and air, bell, feed bin, combustion gas once exports, combustion gas collection chamber, combustion chamber, gas secondary outlet, reduction chamber, three outlets of combustion gas, grey storehouse, furnace wall; Characteristic is that the side and the furnace wall of feed bin, reduction chamber forms the combustion gas collection chamber, makes combustion gas without the combustion zone, directly to the reduction zone.
The invention has the beneficial effects as follows: because of combustion gas without the combustion zone, can with the burning of the air mixed of combustion zone, solved the technical barrier that present lower suction type is prone to grill thoroughly; And combustion gas can make the tar that contains in the combustion gas further transform through the reduction zone, reduced the coal-tar middle oil content of biological fuel gas, improved transformation efficiency and fuel gases calorific value simultaneously.Counter flow type biomass gasification furnace of the present invention possesses advantages such as resistance is little, transformation efficiency is high, aerogenesis is easy, tar content is low.
Description of drawings:
Fig. 1 is a counter flow type biomass gasification furnace synoptic diagram of the present invention.
Fig. 2 is a counter flow type biomass gasification furnace fire grate synoptic diagram of the present invention.
1 is fire door, and 2 is fire grate, and 3 is the combustion chamber, and 4 is air, and 5 is bell; 6 is feed bin, and 7 once export for combustion gas, and 8 are the combustion gas collection chamber, and 9 be water conservancy diversion heat conduction screw-blade, and 10 is that gas secondary exports; 11 are the reduction chamber, and 12 are three outlets of combustion gas, and 13 is grey storehouse, and 14 is the furnace wall.
Embodiment:
Further specify the embodiment of biomass high-temperature vapourizing furnace of the present invention below in conjunction with accompanying drawing.
Counter flow type biomass gasification furnace of the present invention is as shown in Figure 1, comprises fire door 1, fire grate 2, combustion chamber 3, air 4; Bell 5, feed bin 6, combustion gas once exports 7, combustion gas collection chamber 8, water conservancy diversion heat conduction screw-blade 9; Gas secondary outlet 10, reduction chamber 11, three outlets 12 of combustion gas, grey storehouse 13, furnace wall 14; Combustion gas once exports 7, gas secondary outlet 10 is respectively in the side of feed bin 6, reduction chamber 11; The side of feed bin 6, reduction chamber 11 and furnace wall 14 form combustion gas collection chamber 8; Water conservancy diversion heat conduction screw-blade 9 is welded on 3 sides, combustion chamber, is positioned at combustion gas collection chamber 8; Feed bin 6 side direction walls have a plurality of combustion gas and once export 7; Reduction chamber 11 side direction walls have a plurality of gas secondary outlets 10.
During use, at first open bell 5, in feed bin 6, drop into biomass solid fuel; Adopt lighter for ignition to light a fire from the below; Seal with bell 5,1 pair of vapourizing furnace of fire door then, and simultaneously from air 4 bubbling airs, incomplete combustion takes place in biomass solid fuel in combustion chamber 3; Biomass pyrolytic in the feed bin 6 produces combustion gas; Once export 7 from combustion gas and be expelled in the combustion gas collection chamber 8, after water conservancy diversion heat conduction screw-blade 9 and combustion chamber 3 heat exchange, be expelled to reduction chamber 11 from gas secondary outlet 10; Tar in the combustion gas is carried out the pyrolysis reduction, be delivered to the user from three outlets 12 of combustion gas then.When not using biomass gasifying furnace, open fire door 1, remove the gred, also can be when operation, the slagging-off while feeding in raw material.

Claims (4)

1. counter flow type biomass gasification furnace comprises fire door (1), fire grate (2), combustion chamber (3); Air (4), bell (5), feed bin (6), combustion gas once exports (7); Combustion gas collection chamber (8), water conservancy diversion heat conduction screw-blade (9), gas secondary outlet (10), reduction chamber (11); Three outlets of combustion gas (12), grey storehouse (13), furnace wall (14); Combustion gas once exports (7), gas secondary outlet (10) respectively in the side of feed bin (6), reduction chamber (11); Water conservancy diversion heat conduction screw-blade (9) is welded on side, combustion chamber (3), is positioned at combustion gas collection chamber (8); It is characterized in that: side and furnace wall (14) of feed bin (6), reduction chamber (11) form combustion gas collection chamber (8).
2. counter flow type biomass gasification furnace as claimed in claim 1 is characterised in that feed bin (6) side direction wall has a plurality of combustion gas and once exports (7).
3. counter flow type biomass gasification furnace as claimed in claim 1 is characterised in that reduction chamber (11) side direction wall has a plurality of gas secondary outlets (10).
4. counter flow type biomass gasification furnace as claimed in claim 1 is characterised in that water conservancy diversion heat conduction screw-blade (9) is welded on the side of combustion chamber (3), is positioned at combustion gas collection chamber (8).
CN 200910116780 2009-05-14 2009-05-14 Counter flow type biomass gasification furnace Expired - Fee Related CN101560410B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200910116780 CN101560410B (en) 2009-05-14 2009-05-14 Counter flow type biomass gasification furnace

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Application Number Priority Date Filing Date Title
CN 200910116780 CN101560410B (en) 2009-05-14 2009-05-14 Counter flow type biomass gasification furnace

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CN101560410B true CN101560410B (en) 2012-08-29

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101812327B (en) * 2010-04-22 2012-11-21 哈尔滨工业大学 Down-draught type biomass gasifier for secondarily cracking tar
CN102777890B (en) * 2012-08-16 2014-06-25 合肥工业大学 Biomass fuel boiler
CN110499191B (en) * 2019-09-03 2020-10-02 厦门大学 Middle part is given vent to anger downdraft biomass gasification stove

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4452611A (en) * 1982-05-24 1984-06-05 Richey Clarence B Downdraft channel biomass gasifier
CN2380569Y (en) * 1998-12-07 2000-05-31 殷建新 Low-suction type organism-gasifying furnace
CN1528656A (en) * 2003-10-16 2004-09-15 中国科学院广州能源研究所 Method and apparatus for catalytic preparation of hydrogen by biomass down-draft gasifying stove
CN2714964Y (en) * 2004-07-06 2005-08-03 辛思学 Biomass gas producer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4452611A (en) * 1982-05-24 1984-06-05 Richey Clarence B Downdraft channel biomass gasifier
CN2380569Y (en) * 1998-12-07 2000-05-31 殷建新 Low-suction type organism-gasifying furnace
CN1528656A (en) * 2003-10-16 2004-09-15 中国科学院广州能源研究所 Method and apparatus for catalytic preparation of hydrogen by biomass down-draft gasifying stove
CN2714964Y (en) * 2004-07-06 2005-08-03 辛思学 Biomass gas producer

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