CN104654817A - Process for generating high-temperature clean air by using tail gas after biomass thermal gas combustion - Google Patents
Process for generating high-temperature clean air by using tail gas after biomass thermal gas combustion Download PDFInfo
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- CN104654817A CN104654817A CN201510074014.2A CN201510074014A CN104654817A CN 104654817 A CN104654817 A CN 104654817A CN 201510074014 A CN201510074014 A CN 201510074014A CN 104654817 A CN104654817 A CN 104654817A
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Abstract
The invention discloses a process for generating high-temperature clean air by using tail gas after biomass thermal gas combustion, and aims at utilizing biomass for producing clean wind. The process sequentially comprises the following process steps for achieving the goal: a, biomass fuel is fed into a biomass gasification furnace; b, the gasification furnace produces clean hot gas through pyrolysis and gasification, and the clean hot gas enters a special biomass burner; c, a hot air furnace utilizes the tail gas generated after the combustion of the hot gas of the special biomass burner for realizing the heat exchange on normal temperature air, high-temperature clean wind hot air lower than 900 DEG C is formed and enters a kiln furnace, and processes of paper making drying and the like are realized; d, waste gas of the kiln furnace is subjected to heat exchange through an air heat exchanger, the air is heated to 200 DEG C to 500 DEG C, then, the hot air is mixed with normal temperature air, and the mixed air is used as matched combustion supporting air and is introduced into the special biomass burner. The process provided by the invention is suitable for industries such as glass, ceramics, casting, food and paper making.
Description
Technical field
The present invention relates to Biomass Energy Utilization field, is a kind of the fuel gas buring after biomass briquette gasification, and the tail gas after burning is produced the technique of high temperature clean air after heat exchange again.
Background technology
Gasification technology be a kind of using agriculture and forestry organic waste material, wood leftover material etc. three refuse as raw material, pyrolysis or gasification mode is utilized to produce the technology of the clean combustion gas of high temperature, this combustion gas can be widely used in the combustion heating of the container such as boiler, various different smelting furnace, oven dry kiln, tunnel type insulation kiln, glowing furnace, pyrolysis oven, is applicable to the industries such as glass, pottery, casting, food, papermaking.Air (waste gas or gas) discharge after biomass fuel gas firing can reach the Industrial Stoves pollutant atmospheric emission standard of the industries such as boiler atmospheric emission standards in 2014 and pottery, aluminium, copper in 2010.Biomass fuel is environmental protection regenerative resource, it is the green energy resource that the whole world is widelyd popularize, in combustion can near " zero-emission "---namely without deslagging, smokelessly, without CO2 emission, the standard coal that biomass fuel per ton is alternative 0.7 ton-0.9 ton is the effective way reducing atmospheric greenhouse gas discharging.Prior art is biomass fuel Thorough combustion, the tail gas after burning is utilized to realize operation, due to many industry fields to ignition temperature require high while to burning after tail gas cleanliness factor also have requirement for height standard, for papermaking stoving process, iff biomass fuel or gasification after fuel gas buring after tail gas for it, its hot exhaust gas cleanliness factor standard is undesirable, and paper can present black patches.Existing technique is all utilize combustion of natural gas to produce high temperature clean air, and not only cost is high to use natural gas, and can not regenerate and destroy contaminated environment.
Summary of the invention
The object of patent of the present invention is not enough for prior art, and provide a kind of novel biomass gasifying burning process of High-efficient Production high temperature clean air, the present invention comprises the following steps successively:
A. biomass fuel is sent to biomass gasifying furnace;
B. gasification furnace pyrolysis gas is dissolved clean hot combustion gas and blast living beings burner special;
C. hot-blast stove produces the tail gas of 800 DEG C-1200 DEG C by normal temperature air heat exchange after utilizing the hot fuel gas buring of living beings burner special, the clean air that formation temperature reaches less than 900 DEG C high temperature blasts kiln, realizes the technique such as the insulation of metal or quenching, the baking of pottery and the oven dry of papermaking; The EGT of hot-blast stove 150 DEG C-200 DEG C, directly enters air;
D. kiln discharges waste gas that maximum temperature reaches 700 DEG C through air heat exchanger heat exchange heating normal temperature air to 200 DEG C-500 DEG C, then these 200 DEG C of-500 DEG C of hot-airs mix with normal temperature air, introduce living beings burner special again, use as the hot air distribution of living beings burner special.Hot exhaust gas after burning enters after hot air furnace heat exchange can by the designing requirement temperature below air-lift unit to 900 DEG C, the EGT after air heat exchanger heat exchange 150 DEG C-200 DEG C, in line enter air.
Living beings described above are wooden class leftover pieces, stalk, wooden chaff etc... agriculture and forestry discarded object.
Beneficial effect: 1, this technique is on the basis of existing gasification of biomass pyrolysis, improve the exhaust temperature after burning, and set up clean air generating means, the industry field that living beings can be made like this to apply can be more various and broad, also reduce the dependence to a fossil energy, what can be described as the clean energy resource of a new generation mainly promotes the use technology; 2, this technique is provided with waste gas utilization technique, makes full use of the heat energy of biomass gasification fired generation.
Accompanying drawing explanation
Accompanying drawing 1 is the process chart of patent of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, patent of the present invention is further described.
In the drawings, patent of the present invention primarily of biomass gasifying furnace 1, living beings burner special 2, hot-blast stove 3, the equipment such as kiln 4 and air heat exchanger 5 forms.
Patent of the present invention in turn includes the following steps enforcement:
A. send biomass fuel to biomass gasifying furnace 1, described living beings are wooden class leftover pieces, stalk and wooden chaff etc... agriculture and forestry discarded object.
B. gasification furnace 1 pyrolysis gas is dissolved clean hot combustion gas and blast living beings burner special 2.
C. 800 DEG C of-1200 DEG C of tail gas producing after utilizing the hot fuel gas buring of living beings burner special 2 of hot-blast stove 3 are by after normal temperature air heat exchange, the clean hot air forming less than 900 DEG C blasts kiln 4 and realizes the techniques such as the insulation of metal or quenching, the baking of pottery and the oven dry of papermaking, avoids black patches appears in stainless steel, pottery, paper phenomenon in production technology:
D. kiln discharges waste gas that maximum temperature reaches 700 DEG C through air heat exchanger heat exchange heating normal temperature air to 200 DEG C-500 DEG C, then these 200 DEG C of-500 DEG C of hot-airs mix with normal temperature air, introduce living beings burner special 2 again, use as the hot air distribution of living beings burner special, hot exhaust gas after burning enters after hot air furnace heat exchange can by the designing requirement temperature below air-lift unit to 900 DEG C, this processing step makes tail gas recycle, and greatly improves biomass gasification fired thermal efficiency; EGT after air heat exchanger 5 heat exchange 150 DEG C-200 DEG C, can in line enter air, thermal pollution and environmental protection and energy saving requirement can be avoided.
The high temperature clean air that the present invention produces is except except heating kiln, can adopting identical technique to heat various smelting furnace, glowing furnace and pyrolysis oven etc. and complete various different technique.This invention can widely use in the processing industry of glass, pottery, casting, food and papermaking.
Claims (2)
1. after utilizing biomass thermal fuel gas buring, tail gas produces a technique for high temperature clean air, it is characterized in that, comprises following process steps successively:
A. biomass fuel is sent to biomass gasifying furnace;
B. gasification furnace pyrolysis gas dissolves clean hot combustion gas and enters living beings burner special;
C. 800 DEG C of-1200 DEG C of high-temperature tail gas producing after utilizing the hot fuel gas buring of living beings burner special of hot-blast stove are by normal temperature air heat exchange, the high temperature clean air that formation temperature reaches less than 900 DEG C blasts kiln, realizes the techniques such as the insulation of metal or quenching, the baking of pottery and the oven dry of papermaking; The waste gas of hot-blast stove 150 DEG C-200 DEG C, directly enters air;
D. kiln discharges waste gas that maximum temperature reaches 700 DEG C through air heat exchanger heat exchange heating normal temperature air to 200 DEG C-500 DEG C, then these 200 DEG C of-500 DEG C of hot-airs mix with normal temperature air, introduce living beings burner special again, as the use of the hot air distribution of living beings burner special, after the hot exhaust gas after burning enters hot air furnace heat exchange, the design temperature of air-lift unit less than 900 DEG C can be required temperature; EGT after air heat exchanger heat exchange 150 DEG C-200 DEG C, in line enter air.
2. according to claim 1ly utilize tail gas after biomass thermal fuel gas buring to produce high temperature clean air technique, it is characterized in that described living beings are the .. agriculture and forestry discarded objects such as wooden leftover pieces, stalk, wooden chaff.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510074014.2A CN104654817A (en) | 2015-02-04 | 2015-02-04 | Process for generating high-temperature clean air by using tail gas after biomass thermal gas combustion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510074014.2A CN104654817A (en) | 2015-02-04 | 2015-02-04 | Process for generating high-temperature clean air by using tail gas after biomass thermal gas combustion |
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| CN104654817A true CN104654817A (en) | 2015-05-27 |
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| CN201510074014.2A Pending CN104654817A (en) | 2015-02-04 | 2015-02-04 | Process for generating high-temperature clean air by using tail gas after biomass thermal gas combustion |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006089628A (en) * | 2004-09-24 | 2006-04-06 | Ishikawajima Harima Heavy Ind Co Ltd | Gasification furnace apparatus |
| CN202501449U (en) * | 2011-07-14 | 2012-10-24 | 天津盛世新源能源科技有限公司 | A special-purpose combustor for biomasses |
| CN203295464U (en) * | 2013-03-29 | 2013-11-20 | 合肥德博生物能源科技有限公司 | Biomass gasification drying system |
| CN104073297A (en) * | 2014-06-19 | 2014-10-01 | 广东正鹏生物质能源科技有限公司 | Integrated system for purifying biomass fuel gas and recycling combustion tail gas waste heat |
| CN203949519U (en) * | 2014-06-19 | 2014-11-19 | 广东正鹏生物质能源科技有限公司 | A kind of biological fuel gas Industrial Stoves combustion system with flue gas waste heat-recovering |
-
2015
- 2015-02-04 CN CN201510074014.2A patent/CN104654817A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006089628A (en) * | 2004-09-24 | 2006-04-06 | Ishikawajima Harima Heavy Ind Co Ltd | Gasification furnace apparatus |
| CN202501449U (en) * | 2011-07-14 | 2012-10-24 | 天津盛世新源能源科技有限公司 | A special-purpose combustor for biomasses |
| CN203295464U (en) * | 2013-03-29 | 2013-11-20 | 合肥德博生物能源科技有限公司 | Biomass gasification drying system |
| CN104073297A (en) * | 2014-06-19 | 2014-10-01 | 广东正鹏生物质能源科技有限公司 | Integrated system for purifying biomass fuel gas and recycling combustion tail gas waste heat |
| CN203949519U (en) * | 2014-06-19 | 2014-11-19 | 广东正鹏生物质能源科技有限公司 | A kind of biological fuel gas Industrial Stoves combustion system with flue gas waste heat-recovering |
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Application publication date: 20150527 |
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| WD01 | Invention patent application deemed withdrawn after publication |