CN203116087U - Biomass pyrolysis double-fluidized-bed ignition system - Google Patents
Biomass pyrolysis double-fluidized-bed ignition system Download PDFInfo
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- CN203116087U CN203116087U CN2013201079632U CN201320107963U CN203116087U CN 203116087 U CN203116087 U CN 203116087U CN 2013201079632 U CN2013201079632 U CN 2013201079632U CN 201320107963 U CN201320107963 U CN 201320107963U CN 203116087 U CN203116087 U CN 203116087U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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Abstract
The utility model belongs to the technical field of new power station boiler ignition methods, and particularly relates to a biomass pyrolysis double-fluidized-bed ignition system. The system is composed of a reaction device and a boiler ignition device. The reaction device is composed of a combustor, a smoke-gas separator, a first material returning valve, a pyrolyzing apparatus, a second material returning valve, a combustion gas separator, a heat auger and a high-temperature combustion gas fan. The boiler ignition device comprises a boiler combustor, a hearth and a combustion gas igniter. According to the biomass pyrolysis double-fluidized-bed ignition system, high-temperature biomass combustion gas enters the hearth to be combusted through combustion gas of the igniter on the lowest layer of a boiler, coal powder from the combustor is ignited after the combustion gas is combusted to reach the combustion temperature of the coal powder, and therefore the goal of boiler ignition is achieved. The biomass pyrolysis double-fluidized-bed ignition system can provide high-temperature combustion gas for an ignition stage of a high-capacity coal powder fired boiler of a power station, a traditional mode of oil ignition is replaced, and the problem of energy crisis is solved.
Description
Technical field
The utility model belongs to station boiler igniting new method technical field, the particularly double-fluidized-bed ignition system of a kind of biomass pyrolytic.
Background technology
The at present big main sparking mode of Capacity Power Plant Boilers has grease gun igniting and plasma ignition.Big Capacity Power Plant Boilers tradition adopts the direct combusting heavy oil igniting of oil gun, and plasma ignition is the new technology that develops in recent years.
Present sparking mode mainly contains:
(1) mode of grease gun igniting adopts the igniting of the direct combusting heavy oil of oil gun, and fuel consumption is very big, 400 tons of the annual igniting of 300 MW unit boilers oil consumptions, and 600 a MW unit boilers igniting once needs 300 tons of oil consumptions.
(2) plasma ignition is to utilize plasma generator that air ionization is the yin, yang particle, and produces high-temperature electric arc betwixt, thus the firing technique of direct firing coal-dust.The mode of plasma ignition is relatively poor to the adaptability of coal, still has certain difficulty when lighting the lower meager coal of volatile matter and colm.
China is large agricultural country, and biomass resource is abundanter, and the annual only output of 4 biolobic material resources such as agricultural crop straw, fuel wood, animal wastes and house refuse just is equivalent to 7.8 hundred million tons of mark coal energy, China's total energy consumption in 2000 reach 50% more than.Therefore how effectively to utilize living beings to cause people's attention gradually.
There is following problem in present biomass pyrolytic equipment:
(1) the semicoke density of biomass pyrolytic formation is light, and seldom a part enters in the burning bed with the bed material, and major part is carried discharge by combustion gas, has caused and has polluted and waste.Therefore, need from combustion gas, separate semicoke, send back in the burner.
(2) adopt water vapour as fluidizing reagent in the Chang Yong pyrolysis apparatus, the conversion ratio of water vapour reduces system effectiveness less than 10%, and the steam of wasting water.
(3) in two returning charge valves, owing to existing of the dipleg that forms with moving bed, make the fluidizing agent of returning charge valve need higher pressure (greater than 50 kPa), the pressure of high-temperature fuel gas (being not more than 10 kPa) does not satisfy, thereby can not be as the fluidizing agent of returning charge valve.
The utility model content
At the prior art deficiency, the utility model provides a kind of biomass pyrolytic double-fluidized-bed ignition system.
The double-fluidized-bed ignition system of a kind of biomass pyrolytic, it is made up of reaction unit and ignition of the boiler device;
The outlet on burner top is connected with smoke separator in its reaction unit, and exhanst gas outlet is established on described smoke separator top, and the lower end is connected with the upper entrance of pyrolysis apparatus by the first returning charge valve; The lower part outlet of described pyrolysis apparatus links to each other with the entrance of burner bottom by the second returning charge valve; The outlet on pyrolysis apparatus top is connected with degassing chamber; The upper end of degassing chamber is gas outlet, and the lower end links to each other with the bottom entrance of burner by hot screw feeder; Gas outlet is divided into two branch roads, and wherein a branch road is connected with the bottom of pyrolysis apparatus by the high-temperature fuel gas blower fan; The bottom of described burner arranges air intake, and the bottom of the described first returning charge valve and the second returning charge valve arranges steam entry;
Boiler is arranged 3 ~ 5 layers of boiler-burner in the ignition of the boiler device, be separately positioned on the front-back wall water-cooling wall of burner hearth, 4 ~ 8 boiler-burners are set respectively on the front-back wall water-cooling wall of every layer of burner hearth, wherein on undermost each boiler-burner a gas igniter are set all;
The orlop boiler-burner is apart from 3 ~ 4 meters of boiler furnace hoppers, and the spacing between each layer boiler-burner is 2.5 ~ 3.5 meters, and the spacing in every layer of boiler-burner between each boiler-burner is 3.5 ~ 4.5 meters;
Another branch road of gas outlet links to each other with the undermost burner of boiler in the ignition of the boiler device in the reaction unit.
The beneficial effects of the utility model are:
The utility model adopts biological fuel gas to carry out the new method of big Capacity Power Plant Boilers igniting, adopts higher calorific value (12 MJ/Nm
3~ 15 MJ/Nm
3) biological fuel gas, to big Capacity Power Plant Boilers igniting, the double-fluidized-bed reactor assembly of biomass pyrolytic adopts unique double-fluidized-bed structure, pyrolysis apparatus adopts high-temperature fuel gas as fluidizing agent, can obtain the combustion gas of high heating value, make high-temperature fuel gas and use for big Capacity Power Plant Boilers igniting by the ignition of the boiler device.The utility model can provide high-temperature fuel gas for power plant in the big capacity pulverized coal boiler ignition stage, replaces the mode of traditional oil drop fire, solves the energy-intensive problem.
Description of drawings
Fig. 1 is the utility model reaction unit structural representation;
Fig. 2 is the utility model ignition device structure schematic diagram;
Fig. 3 is the utility model igniter A-A face vertical view;
Number in the figure: 1-burner; The 2-smoke separator; The 3-first returning charge valve; The 4-pyrolysis apparatus; The 5-second returning charge valve; The 6-degassing chamber; The hot screw feeder of 7-; 8-high-temperature fuel gas blower fan; The 9-gas igniter; The 10-boiler-burner; The 11-burner hearth.
The specific embodiment
The utility model provides the double-fluidized-bed ignition system of a kind of biomass pyrolytic and method of work thereof, below in conjunction with the drawings and specific embodiments the utility model is described further.
The double-fluidized-bed ignition system of a kind of biomass pyrolytic, it is made up of reaction unit and ignition of the boiler device;
The outlet on burner 1 top is connected with smoke separator 2 in its reaction unit, and exhanst gas outlet is established on described smoke separator 2 tops, and the lower end is connected with the upper entrance of pyrolysis apparatus 4 by the first returning charge valve 3; The lower part outlet of described pyrolysis apparatus 4 links to each other with the entrance of burner 1 bottom by the second returning charge valve 5; The outlet on pyrolysis apparatus 4 tops is connected with degassing chamber 6; The upper end of degassing chamber 6 is gas outlet, and the lower end links to each other with the bottom entrance of burner 1 by hot screw feeder 7; Gas outlet is divided into two branch roads, and wherein a branch road is connected with the bottom of pyrolysis apparatus 4 by high-temperature fuel gas blower fan 8; The bottom of described burner 1 arranges air intake, and the bottom of the described first returning charge valve 3 and the second returning charge valve 5 arranges steam entry;
Boiler is arranged 3 ~ 5 layers of boiler-burner 10 in the ignition of the boiler device, be separately positioned on the front-back wall water-cooling wall of burner hearth 11,4 ~ 8 boiler-burners 10 are set respectively on the front-back wall water-cooling wall of every layer of burner hearth 11, wherein on undermost each boiler-burner 10 gas igniter 9 are set all;
Orlop boiler-burner 10 is apart from 3 ~ 4 meters of boiler furnace hoppers, and the spacing between each layer boiler-burner 10 is 2.5 ~ 3.5 meters, 3.5 ~ 4.5 meters of the spacings in every layer of boiler-burner between each boiler-burner;
Another branch road of gas outlet links to each other with the undermost burner 10 of boiler in the ignition of the boiler device in the reaction unit.
The method of work of the double-fluidized-bed reactor ignition system of a kind of biomass pyrolytic, its concrete scheme is as follows:
The living beings feed enters from the bottom of burner 1, and after air burning, the semicoke that obtains and flue gas enter smoke separator 2 and separate, and semicoke sinks to entering in the pyrolysis apparatus 4 by the first returning charge valve 3, and flue gas is discharged from smoke separator 2 top exhanst gas outlets.The pyrolysis in pyrolysis apparatus of living beings feed and semicoke, the fraction semicoke is taken in the combustion gas of generation out of, and enters degassing chamber 6; Another part not biological material of complete reaction is sent burner 1 back to by the second returning charge valve 5 and is recycled.In degassing chamber 6, the sinking of the semicoke of solid is sent back in the burner 1 by hot screw feeder 7 and is recycled, and combustion gas is sent from degassing chamber 6 top gas pipelines.In the first returning charge valve 3 and the second returning charge valve 5, feed the hyperthermia and superheating water vapour, as the fluidizing agent of two returning charge valves.Send back in the pyrolysis apparatus 4 by high-temperature fuel gas blower fan 8 from the combustion gas part that gas pipeline is sent, as the fluidizing agent of pyrolysis apparatus 4.The high temperature biological fuel gas enters burner hearth 11 internal combustion by boiler orlop igniter gas gun 9, and fuel gas buring reaches the coal dust of lighting after the ignition temperature of coal dust to come out from boiler-burner 10, thereby reaches the purpose of ignition of the boiler.
400 ℃ of conveyings of high temperature are adopted in combustion gas, can utilize the high temperature sensible heat of biological fuel gas.
The combustion gas volume flow of every boiler-burner 10 utilizations is 4000 m
3/ h.
The utility model adopts biological fuel gas to carry out the new method of big Capacity Power Plant Boilers igniting, adopts higher calorific value (12 MJ/Nm
3~ 15 MJ/Nm
3) biological fuel gas, to big Capacity Power Plant Boilers igniting, the double-fluidized-bed reactor assembly of biomass pyrolytic adopts unique double-fluidized-bed structure, pyrolysis apparatus adopts high-temperature fuel gas as fluidizing agent, can obtain the combustion gas of high heating value, make high-temperature fuel gas and use for big Capacity Power Plant Boilers igniting by the ignition of the boiler device.The utility model can provide high-temperature fuel gas for power plant in the big capacity pulverized coal boiler ignition stage, replaces the mode of traditional oil drop fire, solves the energy-intensive problem.
Claims (1)
1. double-fluidized-bed ignition system of biomass pyrolytic, it is characterized in that: this system is made up of reaction unit and ignition of the boiler device;
The outlet on burner in its reaction unit (1) top is connected with smoke separator (2), and exhanst gas outlet is established on described smoke separator (2) top, and the lower end is connected with the upper entrance of pyrolysis apparatus (4) by the first returning charge valve (3); The lower part outlet of described pyrolysis apparatus (4) links to each other with the entrance of burner (1) bottom by the second returning charge valve (5); The outlet on pyrolysis apparatus (4) top is connected with degassing chamber (6); The upper end of degassing chamber (6) is gas outlet, and the lower end links to each other with the bottom entrance of burner (1) by hot screw feeder (7); Gas outlet is divided into two branch roads, and wherein a branch road is connected with the bottom of pyrolysis apparatus (4) by high-temperature fuel gas blower fan (8); The bottom of described burner (1) arranges air intake, and the bottom of the described first returning charge valve (3) and the second returning charge valve (5) arranges steam entry;
Boiler arranges 3 ~ 5 layers of boiler-burner (10) in the ignition of the boiler device, be separately positioned on the front-back wall water-cooling wall of burner hearth (11), 4 ~ 8 boiler-burners (10) are set respectively on the front-back wall water-cooling wall of every layer of burner hearth (11), wherein on undermost each boiler-burner (10) gas igniter (9) are set all;
Orlop boiler-burner (10) is apart from 3 ~ 4 meters of boiler furnace hoppers, and the spacing between each layer boiler-burner (10) is 2.5 ~ 3.5 meters, and the spacing in every layer of boiler-burner (10) between each boiler-burner (10) is 3.5 ~ 4.5 meters;
Another branch road of gas outlet links to each other with the undermost burner of boiler (10) in the ignition of the boiler device in the reaction unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201079632U CN203116087U (en) | 2013-03-07 | 2013-03-07 | Biomass pyrolysis double-fluidized-bed ignition system |
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| CN2013201079632U CN203116087U (en) | 2013-03-07 | 2013-03-07 | Biomass pyrolysis double-fluidized-bed ignition system |
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| CN203116087U true CN203116087U (en) | 2013-08-07 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148513A (en) * | 2013-03-07 | 2013-06-12 | 华北电力大学（保定） | Biomass pyrolysis double fluidized bed ignition system and working method thereof |
| CN106746470A (en) * | 2017-02-09 | 2017-05-31 | 中国石油大学(华东) | A kind of oily sludge drying and incinerating integrated processing technique |
| CN107739630A (en) * | 2017-11-21 | 2018-02-27 | 浙江大学 | A kind of Biomass Gasification in Circulating Fluidized Bed device |
| CN108506928A (en) * | 2018-04-16 | 2018-09-07 | 中国计量大学 | A kind of non-oil ignition system and method for circulating fluidized bed combustion coal boiler |
| CN109611831A (en) * | 2017-12-14 | 2019-04-12 | 湘潭锅炉有限责任公司 | A kind of lignite destructive distillation circulating fluidized bed boiler |
-
2013
- 2013-03-07 CN CN2013201079632U patent/CN203116087U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148513A (en) * | 2013-03-07 | 2013-06-12 | 华北电力大学（保定） | Biomass pyrolysis double fluidized bed ignition system and working method thereof |
| CN106746470A (en) * | 2017-02-09 | 2017-05-31 | 中国石油大学(华东) | A kind of oily sludge drying and incinerating integrated processing technique |
| CN106746470B (en) * | 2017-02-09 | 2020-09-11 | 中国石油大学(华东) | Oily sludge drying and burning integrated treatment process |
| CN107739630A (en) * | 2017-11-21 | 2018-02-27 | 浙江大学 | A kind of Biomass Gasification in Circulating Fluidized Bed device |
| CN109611831A (en) * | 2017-12-14 | 2019-04-12 | 湘潭锅炉有限责任公司 | A kind of lignite destructive distillation circulating fluidized bed boiler |
| CN108506928A (en) * | 2018-04-16 | 2018-09-07 | 中国计量大学 | A kind of non-oil ignition system and method for circulating fluidized bed combustion coal boiler |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20140307 |