CN103881754A - Efficient biomass gasification and coal-fired power generating boiler combined power generating method - Google Patents

Efficient biomass gasification and coal-fired power generating boiler combined power generating method Download PDF

Info

Publication number
CN103881754A
CN103881754A CN201410109758.9A CN201410109758A CN103881754A CN 103881754 A CN103881754 A CN 103881754A CN 201410109758 A CN201410109758 A CN 201410109758A CN 103881754 A CN103881754 A CN 103881754A
Authority
CN
China
Prior art keywords
coal
power generating
biomass
furnace
fuel gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410109758.9A
Other languages
Chinese (zh)
Other versions
CN103881754B (en
Inventor
何培红
沈冶
阎维平
黎泽元
常平
胡志波
伍焕婷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Energy Group Changyuan Power Co.,Ltd.
Original Assignee
GUODIAN CHANGYUAN HUBEI BIOMASS GASIFICATION TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GUODIAN CHANGYUAN HUBEI BIOMASS GASIFICATION TECHNOLOGY Co Ltd filed Critical GUODIAN CHANGYUAN HUBEI BIOMASS GASIFICATION TECHNOLOGY Co Ltd
Priority to CN201410109758.9A priority Critical patent/CN103881754B/en
Publication of CN103881754A publication Critical patent/CN103881754A/en
Application granted granted Critical
Publication of CN103881754B publication Critical patent/CN103881754B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/129Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Abstract

The invention provides an efficient biomass gasification and coal-fired power generating boiler combined power generating method comprising the steps of feeding a biomass into a gasification furnace through a feeding machine, meanwhile, feeing hot air from an air preheater at the tail end of a coal-fired power generating boiler into the gasification furnace, carrying out heat exchange on high-temperature fuel gas through heat exchange equipment, transferring part of heat to condensed water, and bringing the heat to a deaerator of a coal-fired generator set, wherein the high-temperature fuel gas is generated by the gasification furnace; feeding cooled high-temperature fuel gas into a 1500-1600 DEG C high temperature region from a pulverized coal combustion nozzle at the topmost layer of the coal-fired power generating boiler to a burn-out wind layer at the high temperature of 400-450 DEG C after being boosted through an induced draft fan so as to combust. By using the efficient biomass gasification and coal-fired power generating boiler combined power generating method, the comprehensive efficiency of biomass gasification power generation is increased, the investment and operation costs of a turbo generator set or a gas generator set and a power transmission and distribution system are reduced, the traditional efficient power generating assembly is sufficiently utilized, and the dosage of petrified coal is reduced while the requirement for stable and full power generation is ensured.

Description

The efficient combination electricity-generating method of gasifying biomass and coal-fired electric generation furnace
Technical field
The present invention relates to biomass energy comprehensive utilization technique field, specifically the efficient combination electricity-generating method of a kind of gasifying biomass and coal-fired electric generation furnace.
Background technology
China is large agricultural country, and agricultural crop straw output is about 700,000,000 tons/year, occupies first place in the world.At present, the main application of China's stalk is papermaking, feed, the life in the countryside energy (using as fuel), and some is used for going back Tian Zaofei, and remaining stalk goes out of use or burns." waste " that becomes " use is little " but must dispose; the annual summer harvest and when the autumn and winter; always there is a large amount of stalks such as wheat, corn to burn in field; a large amount of heavy smogs are produced; not only become the bottleneck problem of rural environmental protection; even become the arch-criminal of bringing disaster to town environment, become the new source of Rural Plane Source Pollution.
Along with expanding economy, primary energy source supply growing tension, has been subject to attention as the renewable biomass energy storing and transporting, but because it has the features such as density is low, distribution is wide, water ratio fluctuation is large, cause its fortune cost of harvesting and storing high, utilising efficiency is low, can not utilize on a large scale always.
Though biomass direct combustion power generation is obtained significant progress, deslagging carbon content is too high, and biomass utilization ratio is not high, and efficiency is on the low side.The gasifying biomass efficiency of biomass fixed-bed gasifying electricity generation is also difficult to break through 70% efficiency, and, because above-mentioned two kinds of modes all need to configure generated energy turbine driven set less than normal or fuel gas generation unit, its overall efficiency is lower, for this reason, state electricity Chang Yuan Hubei gasifying biomass Science and Technology Ltd. once testing and in supercritical thermal power boiler, biomass pulverized after directly into stove multifuel combustion, find still cannot solve the excessive problem of biomass slag carbon amount in deslagging or flying dust, and the negative impact and the contained basic metal of biomass itself that have produced thus the large slag for comprehensive utilization of flying dust have brought hidden danger to electricity generation boiler.Applicant turns to and seeks high-efficiency gasification in conjunction with above-mentioned situation, efficiently utilizes the research and development of combustion gas.
Summary of the invention
The invention provides the efficient combination electricity-generating method of a kind of gasifying biomass and coal-fired electric generation furnace, improve the overall efficiency of Biomass Gasification & Power Generation, and with respect to current single biomass power plant, investment and the operation cost of turbine driven set or fuel gas generation unit and electrical power trans mission/distribution system are reduced, make full use of existing efficient power generation assembly, in ensureing steady full sending out, subtract the consumption that has fallen petrochemical industry coal.
The technical solution adopted in the present invention is as follows:
An efficient combination electricity-generating method for gasifying biomass and coal-fired electric generation furnace, biomass are sent into vapourizing furnace through feed gearbox, and the hot blast simultaneously coming from the air preheater of coal-fired electric generation furnace end is also sent into vapourizing furnace, and biomass produce high-temperature fuel gas at vapourizing furnace; The high-temperature fuel gas that vapourizing furnace produces, through heat-exchange equipment heat exchange, is passed to condensed water by heat and is taken back the deoxygenator in coal-fired electric generation furnace; High-temperature fuel gas is cooled to after 400~450 DEG C through heat-exchange equipment, sends into coal-fired electric generation furnace the superiors coal dust fire and chew to the high-temperature zone of 1500-1600 DEG C that burns stratification of wind interval and burn after induced draft fan boosts.
The efficient combination electricity-generating method of gasifying biomass as above and coal-fired electric generation furnace, utilizes the air preheater heating and gasifying air of coal-fired electric generation furnace end, while arriving vapourizing furnace, is 300-320 DEG C.
The present invention is organic joint of gasification with biomass by dynamical supercritical generating unit, not only improve the overall efficiency of Biomass Gasification & Power Generation, and with respect to current single biomass power plant, investment and the operation cost of turbine driven set or fuel gas generation unit and electrical power trans mission/distribution system are reduced, make full use of existing efficient power generation assembly, in ensureing steady full sending out, subtract the consumption that has fallen petrochemical industry coal, the energy utilization that is beneficial to thus national general is planned to more rational future development.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the efficient combination electricity-generating method of gasifying biomass of the present invention and coal-fired electric generation furnace.
In figure: 1-vapourizing furnace, 2-heat-exchange equipment, 3-induced draft fan, 4-coal-fired electric generation furnace, 5-air preheater.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described.
Please refer to Fig. 1, the device that the efficient combination electricity-generating method of gasifying biomass of the present invention and coal-fired electric generation furnace adopts has: vapourizing furnace 1, heat-exchange equipment 2, induced draft fan 3, coal-fired electric generation furnace 4 and air preheater 5.
Biomass are sent into vapourizing furnace 1 through feed gearbox, and the while is also sent into vapourizing furnace 1 from the hot blast of the air preheater 5 of coal-fired electric generation furnace 4 ends, and biomass carry out producing high-temperature fuel gas after the air gasification under high temperature in vapourizing furnace 1.By utilizing the air preheater 5 heating and gasifying air of coal-fired electric generation furnace 4 ends, while arriving vapourizing furnace 1, be 300-320 DEG C, be conducive to make full use of the flue gas afterheat of thermal power plant, can improve the wide model (the water ratio scope of biomass being relaxed) of biomass water ratio, reduce the amount of oxidation of biomass in gasification installation, make biomass be converted into more expeditiously inflammable gas, have the Hydrogen Energy of golf calorific value in the gasification reaction that is used in biomass complexity to produce.
The high-temperature fuel gas that vapourizing furnace 1 produces is through heat-exchange equipment 2 heat exchange, the heat of high-temperature fuel gas is passed to condensed water and takes back the deoxygenator of coal-fired electric generation furnace 4, high-temperature fuel gas is cooled to after 400~450 DEG C like this, sends into coal-fired electric generation furnace 4 the superiors' coal dust fire and chew to the high-temperature zone of 1500-1600 DEG C that burns stratification of wind interval and burn after induced draft fan 3 boosts.Suitably absorb heat with the high-temperature fuel gas that oiler feed produces vapourizing furnace 1, make combustion gas drop to suitable temperature (400~450 DEG C), this part combustion gas sensible heat utilizes with feedwater heat absorption, has reduced coal quantity of boiler.Owing to adopting high temperature to be conveyed into stove mode (being about to 400~450 DEG C of biomass gasification burnings sends in coal-fired electric generation furnace 4), make the inevitable tar byproduct of gasifying biomass enter the high-temperature zone that can make the perfect combustion of tar gas short period of time in electricity generation boiler in gaseous state mode completely, the utilization of heat that biomass coke tar is taken and the sensible heat utilization of combustion gas are improved, reduce tar treatment facility, make gasification installation system more succinct, investment, operation, maintenance cost is fallen, the a series of sewage that bring because of tar processing are evaded, sump oil, unpleasant gas purging, ensure environment cleaning, meet environmental requirement, in addition, still have the meticulous flying dust of trace in the combustion gas after dedusting, after these flying dusts enter high-temperature zone, its flammable carbon on the low side is fallen in promptly perfect combustion.
The present invention carries outside the combustion heating of sensible heat, self combustion gas composition combustion gas by the special position of sending into, also the part coal dust in coal-fired electric generation furnace 4 is carried out combustion-supporting, coal dust unburned carbon loss is declined, also reducing gas coal combustion being produced has carried out oxidation heating to be processed, coal dust loss of the inadequacy burning for chemistry mechanics reason is declined, not only combustion gas sensible heat and combustibles heat supply have reduced coal consumption, also promote the generating efficiency of coal-powder boiler, and reduce measure because meeting NOX, also reduce measuring containing NOX of electricity generation boiler furnace outlet.
The present invention utilizes the air preheater 5 of coal-fired electric generation furnace 4 afterbodys to add warm air as gasifying medium, reduce biomass amount of oxidation, aerogenesis combustibles is raise and calorific value raising, and therefore controlled the funnel temperature of electricity generation boiler, improved the efficiency of electricity generation boiler, in addition, current overcritical coal fired power generation unit boiler, in the majority with opposed firing turbulent burner decoration form, the present invention determines suitable height and the width position from the non-air feed district of electricity generation boiler, high temperature (400~450 DEG C) biomass gasification burning is sent in stove, and configure the appropriate hot blast that air preheater 5 provides, not only ensure firing again of input combustion gas, and the coal dust suspension combustion of former boiler is strengthened, the reducing gas such as CO that its burn-out degree and burning are produced obtains further oxidation and utilizes, ensure that combustion gas enters stove and coal dust firing do not produced and impacted, contrary combustion gas has not only ensured that mixing is combustion-supporting after entering stove, also bring into play the effect that strengthening coal dust burns.Carrying out detailed analysis of experiments through professional heat energy Testing & Research Institute determines, this combustion gas pass into and air distribution mode makes the biomass of the actual generation of electricity generation boiler substitute petrochemical industry mark coal amount higher than the 2:1 of theoretical upper limit, the present invention complete the calorific value of biomass own alternative in, by combustion-supporting to coal dust in stove, the actual degree that has approached 1:1 of measuring that substitutes.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any belong to those skilled in the art the present invention disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.

Claims (2)

1. the efficient combination electricity-generating method of a gasifying biomass and coal-fired electric generation furnace, it is characterized in that: biomass are sent into vapourizing furnace (1) through feed gearbox, the hot blast simultaneously coming from the air preheater (5) of coal-fired electric generation furnace (4) end is also sent into vapourizing furnace (1), and biomass carry out producing high-temperature fuel gas after the air gasification under high temperature in vapourizing furnace (1); The high-temperature fuel gas that vapourizing furnace (1) produces, through heat-exchange equipment (2) heat exchange, is passed to condensed water by the heat of high-temperature fuel gas and is taken back the deoxygenator in coal-fired electric generation furnace (4); High-temperature fuel gas is cooled to after 400~450 DEG C through heat-exchange equipment (2), sends into coal-fired electric generation furnace (4) the superiors coal dust fire and chew to the high-temperature zone of 1500-1600 DEG C that burns stratification of wind interval and burn after induced draft fan (3) boosts.
2. the efficient combination electricity-generating method of gasifying biomass as claimed in claim 1 and coal-fired electric generation furnace, it is characterized in that: utilizing air preheater (5) the heating and gasifying air of coal-fired electric generation furnace (4) end, is 300-320 DEG C while arriving vapourizing furnace (1).
CN201410109758.9A 2014-03-24 2014-03-24 The efficient combination electricity-generating method of gasifying biomass and coal-fired electric generation furnace Active CN103881754B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410109758.9A CN103881754B (en) 2014-03-24 2014-03-24 The efficient combination electricity-generating method of gasifying biomass and coal-fired electric generation furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410109758.9A CN103881754B (en) 2014-03-24 2014-03-24 The efficient combination electricity-generating method of gasifying biomass and coal-fired electric generation furnace

Publications (2)

Publication Number Publication Date
CN103881754A true CN103881754A (en) 2014-06-25
CN103881754B CN103881754B (en) 2015-09-09

Family

ID=50950893

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410109758.9A Active CN103881754B (en) 2014-03-24 2014-03-24 The efficient combination electricity-generating method of gasifying biomass and coal-fired electric generation furnace

Country Status (1)

Country Link
CN (1) CN103881754B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104560218A (en) * 2014-12-18 2015-04-29 广东正鹏生物质能源科技有限公司 Biomass gasifier/industrial gas boiler combined high-efficiency heating system
CN106122944A (en) * 2016-07-25 2016-11-16 杭州燃油锅炉有限公司 A kind of pulverized-coal fired boiler
CN106221816A (en) * 2016-09-19 2016-12-14 北京中电联发科技有限公司 The combustion gas of molding biomass combustion generation and the system and method for coal dust mixed power generation
CN109054905A (en) * 2018-08-31 2018-12-21 哈尔滨锅炉厂有限责任公司 Negative pressure fire coal coupled biological matter gasification power generation system and the method for carrying out conversion electric energy

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101158312A (en) * 2007-09-14 2008-04-09 武汉力人投资有限公司 Power generation method using biomass
JP2009132785A (en) * 2007-11-29 2009-06-18 Yanmar Co Ltd Biomass gasification system
CN101865451A (en) * 2010-05-24 2010-10-20 叶力平 Biomass high-temperature flue gas gasification combination coal burning boiler and low-pollution combustion method thereof
CN101906996A (en) * 2010-07-20 2010-12-08 华北电力大学(保定) Cogeneration system by firing coil assisted by biomass and solar energy
CN102010757A (en) * 2010-11-15 2011-04-13 华北电力大学(保定) Method for generating power by gasifying integrated straws in supercritical coal-fired generator set
CN203114358U (en) * 2013-01-06 2013-08-07 华北电力大学(保定) Coal-firing mixing power-generating system assisted by biomass energy

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101158312A (en) * 2007-09-14 2008-04-09 武汉力人投资有限公司 Power generation method using biomass
JP2009132785A (en) * 2007-11-29 2009-06-18 Yanmar Co Ltd Biomass gasification system
CN101865451A (en) * 2010-05-24 2010-10-20 叶力平 Biomass high-temperature flue gas gasification combination coal burning boiler and low-pollution combustion method thereof
CN101906996A (en) * 2010-07-20 2010-12-08 华北电力大学(保定) Cogeneration system by firing coil assisted by biomass and solar energy
CN102010757A (en) * 2010-11-15 2011-04-13 华北电力大学(保定) Method for generating power by gasifying integrated straws in supercritical coal-fired generator set
CN203114358U (en) * 2013-01-06 2013-08-07 华北电力大学(保定) Coal-firing mixing power-generating system assisted by biomass energy

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104560218A (en) * 2014-12-18 2015-04-29 广东正鹏生物质能源科技有限公司 Biomass gasifier/industrial gas boiler combined high-efficiency heating system
CN104560218B (en) * 2014-12-18 2016-12-07 广东正鹏生物质能源科技有限公司 A kind of biomass gasifying furnace and the efficient heating system of industrial combustion gas unified boiler
CN106122944A (en) * 2016-07-25 2016-11-16 杭州燃油锅炉有限公司 A kind of pulverized-coal fired boiler
CN106221816A (en) * 2016-09-19 2016-12-14 北京中电联发科技有限公司 The combustion gas of molding biomass combustion generation and the system and method for coal dust mixed power generation
CN109054905A (en) * 2018-08-31 2018-12-21 哈尔滨锅炉厂有限责任公司 Negative pressure fire coal coupled biological matter gasification power generation system and the method for carrying out conversion electric energy

Also Published As

Publication number Publication date
CN103881754B (en) 2015-09-09

Similar Documents

Publication Publication Date Title
CN103881754B (en) The efficient combination electricity-generating method of gasifying biomass and coal-fired electric generation furnace
CN105368499A (en) Process for cogenerating electricity, charcoal and heat through updraft type fixed-bed gasified power generation of lumpy biomass
CN203718752U (en) Smokeless combustion furnace capable of using both straw and marsh gas
CN106047416B (en) Multifunctional gasification furnace and combined cycle energy system
CN204829985U (en) Multipurpose biomass combustion power generation facility
CN207094629U (en) Biomass centralized power generation device
CN207276565U (en) A kind of gasification of biomass and waste incineration coupled system
CN207674430U (en) A kind of recirculating fluidized bed gasification coupling coal unit peaking generation system
CN206739278U (en) A kind of biomass comprehensive energy utilization system
CN201225195Y (en) Biological stalk gasification combined circulation power generation system
CN203513603U (en) Biomass power generating system
CN109666513A (en) A kind of gasification of biomass and waste incineration coupled system
CN108048138B (en) Biomass graded conversion and coal-fired boiler coupling power generation method and system based on medium-low temperature double fluidized beds
CN206940809U (en) Biological fuel gas and Thermal generation unit coupled electricity-generation system
CN206514278U (en) A kind of rice husk stalk concentrates efficiency power generation steam generator system
CN206449647U (en) The clean energy resource of coal unit and biomass gasification technology multiple coupling utilizes system
CN206157106U (en) Shaping biomass fuel unites coal -fired generating unit's power generation system
CN206768039U (en) A kind of biomass gasifying furnace of cogeneration of heat and power
CN205782978U (en) The boiler that straw burns with domestic garbage mixing
CN202229394U (en) Energy-saving emission-reducing fire tube boiler with stock bin
CN201954528U (en) Secondary combustion and discharge device for slag and smoke dust of biomass direct combustion generating boiler
CN215370046U (en) Gas turbine combined heat and power supply device
CN210314137U (en) Biomass coupling power generation device of thermal power plant
CN208090703U (en) A kind of dry arranging device of generating power with biomass combustion boiler slag
CN210163394U (en) Biomass coupling power generation system of thermal power plant

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20140625

Assignee: Hangzhou Juneng Boiler Co., Ltd.

Assignor: GUODIAN CHANGYUAN HUBEI BIOMASS GASIFICATION TECHNOLOGY CO., LTD.

Contract record no.: 2016420000008

Denomination of invention: Efficient biomass gasification and coal-fired power generating boiler combined power generating method

Granted publication date: 20150909

License type: Common License

Record date: 20160406

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20140625

Assignee: Guodian Longyuan Environment Protection Engrg. Co., Ltd., Beijing

Assignor: GUODIAN CHANGYUAN HUBEI BIOMASS GASIFICATION TECHNOLOGY CO., LTD.

Contract record no.: 2017420000021

Denomination of invention: Efficient biomass gasification and coal-fired power generating boiler combined power generating method

Granted publication date: 20150909

License type: Common License

Record date: 20170905

EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20140625

Assignee: Wuhan Wu pan Energy Engineering Co., Ltd.

Assignor: GUODIAN CHANGYUAN HUBEI BIOMASS GASIFICATION TECHNOLOGY CO., LTD.

Contract record no.: 2018420000003

Denomination of invention: Efficient biomass gasification and coal-fired power generating boiler combined power generating method

Granted publication date: 20150909

License type: Common License

Record date: 20180404

EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20140625

Assignee: Harbin Boiler Company Limited

Assignor: GUODIAN CHANGYUAN HUBEI BIOMASS GASIFICATION TECHNOLOGY CO., LTD.

Contract record no.: 2018420000014

Denomination of invention: Efficient biomass gasification and coal-fired power generating boiler combined power generating method

Granted publication date: 20150909

License type: Common License

Record date: 20180604

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20211025

Address after: 430077 national energy building, No. 63, Xudong street, Hongshan District, Wuhan City, Hubei Province

Patentee after: National Energy Group Changyuan Power Co.,Ltd.

Address before: 448040 No. 80 Bai Lu Road, Jingmen, Hubei

Patentee before: GUODIAN CHANGYUAN HUBEI BIOMASS GASIFICATION TECHNOLOGY Co.,Ltd.