CN2501564Y - Apparatus by bio-matter pyrolytic gas refiring denitration - Google Patents
Apparatus by bio-matter pyrolytic gas refiring denitration Download PDFInfo
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- CN2501564Y CN2501564Y CN 01266278 CN01266278U CN2501564Y CN 2501564 Y CN2501564 Y CN 2501564Y CN 01266278 CN01266278 CN 01266278 CN 01266278 U CN01266278 U CN 01266278U CN 2501564 Y CN2501564 Y CN 2501564Y
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- gasification furnace
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- powder boiler
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- 239000000843 powder Substances 0.000 claims abstract description 36
- 238000000197 pyrolysis Methods 0.000 claims abstract description 13
- 238000002309 gasification Methods 0.000 claims description 37
- 239000002028 Biomass Substances 0.000 claims description 14
- 239000006200 vaporizer Substances 0.000 claims description 14
- 239000000446 fuel Substances 0.000 claims description 9
- 210000004894 snout Anatomy 0.000 claims description 6
- 239000012774 insulation material Substances 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 20
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000002817 coal dust Substances 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model relates to a denitration device through the re-burning of biologic pyrolysis gas, which belongs to the NOx burning technical field, solving the denitration function by using biologic pyrolysis gas which is not used in the prior technique. The device mainly comprises a gasifying furnace, a coal powder furnace, and the connection therebetween, the air inlet pipe of the gasifying furnace is communicated with the tail flue of the coal powder furnace, the air outlet pipe of the gasifying furnace is communicated with the hearth of the coal powder furnace. The utility model is reliable and easy, the structure is reasonable, the denitration device will not be restricted by the regional resources, which can be widely extended and applied.
Description
(1) technical field
The utility model relates to the device that utilizes denitration by refueling pyrolysis gas of biomass, belongs to the low NOx combusting technology field.
(2) background field
Coal dust firing is the important source that forms discharged nitrous oxides, and the denitration rate of the burner of low NOx generally is lower than 50%, therefore can not satisfy the environmental requirement of increasingly stringent.The denitration rate of firing method can reach 70% again, but mainly adopts natural gas abroad at present aspect denitration by refueling.The China's natural gas resource mainly is distributed in western part, so the denitration of east and coastal area development natural gas reburning is restricted.U.S. FW company develops biomass gasifying furnace in Finland, it is as an attached bed of coal-powder boiler, and the gasification furnace port of export communicates with the coal-powder boiler bottom, and pyrolysis gas burns at the coal-powder boiler flame kernel, its objective is the processing living beings, do not utilize the denitration function of biomass pyrolytic gas.
(3) technical scheme
The utility model provides a kind of device with denitration by refueling pyrolysis gas of biomass, and it is rational in infrastructure, realizes high denitration efficiency.
The designed a kind of device with denitration by refueling pyrolysis gas of biomass of the utility model mainly by gasification furnace, coal-powder boiler and between connect and compose, gasification furnace is made of vaporizer, intake stack, blower fan, charging aperture, cyclone separator, returning charge dipleg, ash discharge flood dragon cage and wind pipe, charging aperture and ash discharge flood dragon cage are communicated with vaporizer, blower fan is installed in the intake stack, the top of vaporizer is communicated in the cyclone separator, the returning charge dipleg is communicated with cyclone separator with the vaporizer bottom, gasification furnace is covered with insulation material outward; Coal-powder boiler is made of burner hearth and burner, flue and heat exchanger therein, deduster, air-introduced machine and chimney, divide three zones in the burner hearth, be primary zone, reducing zone, burning-out zone, burner is positioned at the place, primary zone, there is the reburning fuel spout burner hearth reducing zone, burner hearth burning-out zone place has the after-flame wind snout, and the wind pipe of gasification furnace is communicated with by the reducing zone of the reburning fuel spout on the coal-powder boiler with stove powder stove; The intake stack that is communicated with gasification furnace is connected with the back-end ductwork of coal-powder boiler again.
This device is when using, the coal-powder boiler partial fume enters in the gasification furnace by the blower fan in the intake stack, in this and the living beings generation pyrolytic gasification reaction that enters gasification furnace from biomass feed inlet, the pyrolytic gasification gas that forms is through behind the cyclone separator, enter the coal-powder boiler burner hearth by the wind pipe that is connected with gasification furnace and the reburning fuel spout of coal-powder boiler burner hearth, the living beings that do not have reaction to finish are back in the vaporizer of gasification furnace by cyclone separator and returning charge dipleg again.And in coal-powder boiler, after the gas that contains NOx that the primary zone burning forms enters the reducing zone, react with pyrolytic gasification gas and to form the gas contain N2, after this gas enters burning-out zone, since there is the part air to enter this district by the after-flame wind snout, therefore do not burn pyrolysis gas and coal dust further burning completely in this district, and the flue gas of heat carries out heat exchange through superheater, economizer, air preheater respectively,, under the effect of air-introduced machine, discharge through chimney after deduster purifies.
The advantage that the utility model is had compared with the prior art is:
1, utilize existing abundant biomass resource, not influencing substantially under the condition of the original combustion position of coal-powder boiler, effectively reduce the discharging of nitrogen oxide, the discharge capacity that can reduce nitrogen oxide is more than 80%;
2, be easy to existing boiler is transformed, and not limited by regions resources;
3, this device is convenient and easy, reliable on technology is implemented.
The utility model mainly is applicable to pulverized-coal fired boiler, is particularly suitable for large medium-size boiler, has broad application prospects.
(4) description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
(5) specific embodiment
Embodiment
A kind of device with denitration by refueling pyrolysis gas of biomass as shown in Figure 1, 2, it mainly comprises gasification furnace 2, coal-powder boiler 20, superheater, back-end ductwork 19, deduster 15 and air-introduced machine 16.Gasification furnace 2 is mainly used in the generation pyrolysis gas of biomass, it mainly comprises vaporizer 21, intake stack 17, blower fan 6, the charging aperture 1 of living beings, cyclone separator 3, returning charge dipleg 4, ash discharge flood dragon cage 5 and wind pipe 22, vaporizer 21 is the core component of gasification furnace, the one side has charging aperture 1, the bottom has ash discharge flood dragon cage 5, vaporizer 21 is connected with cyclone separator 3, the cyclone separator upper end is connected with coal-powder boiler 20 by wind pipe 22, the lower end passes in the vaporizer 21 by returning charge dipleg 4, blower fan 6 is installed in the intake stack 17, and intake stack 17 is connected vaporizer 21 with back-end ductwork 19.Among the primary zone A in coal-powder boiler 20 burner hearths 18 burner 7 is installed, has reburning fuel spout 8 in the B of reducing zone, have after-flame wind snout 9 in burning-out zone C, wind pipe 22 is connected with reburning fuel spout 8 on the coal-powder boiler 20.In the superheater that coal-powder boiler 20 tops pass to coal-powder boiler is communicated with, superheater comprises pendant superheater 10, high temperature convection superheater 11 and low temperature convection superheater 12, superheater is connected with back-end ductwork 19, economizer 13, air preheater 14 are installed in the back-end ductwork 19, back-end ductwork 19 is connected with deduster 15, and deduster 15 is communicated with the chimney that leads to atmosphere by air-introduced machine 16.Be covered with adiabator layer 23 in the outside of gasification furnace 2.
The combustion method that this device adopted is: (1) coal dust is to burn among the A of primary zone by burner hearth 18 bottoms that burner 7 enters coal-powder boiler 20, forms the gas that contains NOx, and the excess air coefficient in this district is 1.0-1.2; (2) with the flue gas in the coal-powder boiler back-end ductwork 19 as air, living beings are carried out pyrolytic gasification reaction in the gasification furnace 2 of recirculating fluidized bed, the excess air coefficient of reducing zone B is 0.8-0.9; (3) pyrolysis gas sprays into the reducing zone B of the middle and upper part of coal-powder boiler burner hearth 18 by wind pipe 22, and imperfect combustion forms hydrocarbon and forms N with the NO reaction that forms from the burning of coal-powder boiler bottom
2(4) the after-flame wind snout 9 from B top, reducing zone sprays into air, and making does not have the completing combustion of the hydrocarbon of completing combustion, and this zone forms burning-out zone C, and the excess air coefficient among the described burning-out zone C is 1.0-1.2.
In implementation process, the effect of flue gas by blower fan 6 enter gasification furnace 2 and with the living beings generation pyrolytic gasification reaction that enters gasification furnace 2 by biomass feed inlet, after the pyrolytic gasification gas that forms separates through cyclone separator 3, enter coal-powder boiler burner hearth 18 by reburning fuel spout 8, the living beings that do not have reaction to finish are recirculated into circle fluidized-bed gasification furnace 2 by cyclone separator 3 and returning charge dipleg 4; Coal dust enters among the coal-powder boiler burner hearth 18 primary zone A by burner 7, formation contains the gas of NOx and reacts in the B of reducing zone with pyrolytic gasification gas, the part air enters coal-powder boiler burner hearth 18 by after-flame wind snout 9, completing combustion in burning-out zone C, flue gas is respectively through superheater 10, high temperature convection superheater 11, and low temperature convection superheater 12, economizer 13, air preheater 14, deduster 15, air-introduced machine 16 are to chimney.Wherein gasification furnace 2 external application adiabator layers 23 can guarantee the necessary temperature of biomass pyrogenation gasification.On-the-spot living beings generally contain than juicy, and living beings do not need first drying, directly enter in the gasification furnace 2, participate in gasification after the water evaporates, form hydrocarbon.Gasification furnace 2 required air are the flue gas of coal-powder boiler back-end ductwork 19, and uniform temperature is arranged in the flue gas, and oxygen content is few simultaneously, guarantee the carrying out of pyrolytic gasification.
In the combustion process in coal-powder boiler 20, the caloric value of main fuel coal dust accounts for 80%-85%, and from the biological pyrolysis matter gas comprises caloric value 15%-20% of gasification furnace 2.
Adopt said apparatus can effectively reduce the discharging of NOx; the denitration rate is reached more than 80%; and not limit by regions resources; utilize visible biomass material to reach everywhere and reduce pollution; the purpose of protection environment; can be under the situation existing boiler being transformed cheaply, with compliance with environmental protection requirements, this device has popularization, use value widely thus.
Claims (1)
1. device with denitration by refueling pyrolysis gas of biomass, it mainly by gasification furnace, coal-powder boiler and between connect and compose, gasification furnace is made of vaporizer, intake stack, blower fan, charging aperture, cyclone separator, returning charge dipleg, ash discharge flood dragon cage and wind pipe, charging aperture and ash discharge flood dragon cage are communicated with vaporizer, and blower fan is installed in the intake stack; The top of vaporizer is communicated in the cyclone separator, and the returning charge dipleg is communicated with cyclone separator with the vaporizer bottom, and the gasification furnace outside is covered with insulation material; Coal-powder boiler mainly is made of burner hearth and burner, flue and heat exchanger therein, deduster, air-introduced machine and chimney, divide three zones in the burner hearth, be primary zone, reducing zone, burning-out zone, burner is positioned at the place, primary zone, there is the reburning fuel spout burner hearth reducing zone, burner hearth burning-out zone place has the after-flame wind snout, it is characterized in that: the wind pipe of gasification furnace is communicated with by the reducing zone of the reburning fuel spout on the coal-powder boiler with stove powder stove; The intake stack that is communicated with gasification furnace is connected with the back-end ductwork of coal-powder boiler again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01266278 CN2501564Y (en) | 2001-10-31 | 2001-10-31 | Apparatus by bio-matter pyrolytic gas refiring denitration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01266278 CN2501564Y (en) | 2001-10-31 | 2001-10-31 | Apparatus by bio-matter pyrolytic gas refiring denitration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2501564Y true CN2501564Y (en) | 2002-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01266278 Expired - Fee Related CN2501564Y (en) | 2001-10-31 | 2001-10-31 | Apparatus by bio-matter pyrolytic gas refiring denitration |
Country Status (1)
| Country | Link |
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| CN (1) | CN2501564Y (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295460C (en) * | 2004-07-22 | 2007-01-17 | 华中科技大学 | Device and method for w shape flame boiler completely burning |
| CN101544898A (en) * | 2008-03-26 | 2009-09-30 | 顾利平 | Improved biomass gasification furnace |
| 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 |
| CN101915419A (en) * | 2010-07-05 | 2010-12-15 | 华北电力大学 | Biomass gasified gas re-burning mode and system for coal-fired fluidized bed |
| CN101050853B (en) * | 2007-04-03 | 2011-01-12 | 哈尔滨工业大学 | Method for reducing nitrogen oxide of powder coal boiler mixed burning gas fuel |
| CN101975393A (en) * | 2010-10-26 | 2011-02-16 | 上海交通大学 | Biomass gasification reburning nozzle system for industrial boiler |
| CN102062393A (en) * | 2011-01-06 | 2011-05-18 | 西安交通大学 | Cyclone burning method and device for reburning fuel in cyclone drum for denitration |
| CN102317689A (en) * | 2008-09-26 | 2012-01-11 | 气体产品与化学公司 | Convective section combustion |
| CN102369396A (en) * | 2008-09-26 | 2012-03-07 | 气体产品与化学公司 | Process temperature control in oxy/fuel combustion system |
| CN102748768A (en) * | 2012-06-28 | 2012-10-24 | 郭丰亮 | Biomass dust removal heat exchanger |
| CN102777891A (en) * | 2012-07-19 | 2012-11-14 | 无锡华光锅炉股份有限公司 | Furnace combustion structure for reducing NOx (nitrogen oxide) discharge |
| CN103604117A (en) * | 2013-11-04 | 2014-02-26 | 武汉和信益科技有限公司 | Multi-grade high-efficiency low-nitrogen combustion method and multi-grade high-efficiency low-nitrogen combustion system for circulating fluidized bed boiler |
| CN105318323A (en) * | 2015-11-03 | 2016-02-10 | 广西桂晟新能源科技有限公司 | Method for applying biomass gasification gas in coal combustion process |
| CN107084386A (en) * | 2017-03-16 | 2017-08-22 | 广东正鹏生物质能源科技有限公司 | A kind of integrated gasification fired boiler system of biomass |
| CN107255269A (en) * | 2017-06-07 | 2017-10-17 | 国电科学技术研究院 | Station boiler system and station boiler integrate the method that gasification of biomass afterburning improves afterbody cigarette temperature |
| CN109966915A (en) * | 2019-03-29 | 2019-07-05 | 北京国电龙源环保工程有限公司 | A kind of gasification of biomass coupling coal-burning boiler full load SCR denitration system and process |
| CN110173695A (en) * | 2019-04-29 | 2019-08-27 | 同济大学 | A method of inhibiting NO_x formation in meat meal tankage pyrolysis devolatilization divided combustion |
| CN111006207A (en) * | 2019-12-09 | 2020-04-14 | 华中科技大学 | Biomass fluidized bed direct combustion system and denitration method thereof |
| CN112664979A (en) * | 2020-12-28 | 2021-04-16 | 华北电力大学 | Cooking range |
| CN112892206A (en) * | 2021-03-23 | 2021-06-04 | 四川大学 | Biomass fast pyrolysis and pyrolysis gas combustion flue gas denitration coupling method and device |
-
2001
- 2001-10-31 CN CN 01266278 patent/CN2501564Y/en not_active Expired - Fee Related
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295460C (en) * | 2004-07-22 | 2007-01-17 | 华中科技大学 | Device and method for w shape flame boiler completely burning |
| CN101050853B (en) * | 2007-04-03 | 2011-01-12 | 哈尔滨工业大学 | Method for reducing nitrogen oxide of powder coal boiler mixed burning gas fuel |
| CN101544898A (en) * | 2008-03-26 | 2009-09-30 | 顾利平 | Improved biomass gasification furnace |
| CN102369396A (en) * | 2008-09-26 | 2012-03-07 | 气体产品与化学公司 | Process temperature control in oxy/fuel combustion system |
| CN102369396B (en) * | 2008-09-26 | 2015-04-01 | 气体产品与化学公司 | Process temperature control in oxy/fuel combustion system |
| CN102317689A (en) * | 2008-09-26 | 2012-01-11 | 气体产品与化学公司 | Convective section combustion |
| 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 |
| CN101865451B (en) * | 2010-05-24 | 2012-05-09 | 叶力平 | Biomass high-temperature flue gas gasification combination coal burning boiler and low-pollution combustion method thereof |
| CN101915419A (en) * | 2010-07-05 | 2010-12-15 | 华北电力大学 | Biomass gasified gas re-burning mode and system for coal-fired fluidized bed |
| CN101915419B (en) * | 2010-07-05 | 2012-05-30 | 华北电力大学 | Biomass gasified gas re-burning mode and system for coal-fired fluidized bed |
| CN101975393A (en) * | 2010-10-26 | 2011-02-16 | 上海交通大学 | Biomass gasification reburning nozzle system for industrial boiler |
| CN102062393A (en) * | 2011-01-06 | 2011-05-18 | 西安交通大学 | Cyclone burning method and device for reburning fuel in cyclone drum for denitration |
| CN102062393B (en) * | 2011-01-06 | 2012-11-28 | 西安交通大学 | Cyclone burning method and device for reburning fuel in cyclone drum for denitration |
| CN102748768A (en) * | 2012-06-28 | 2012-10-24 | 郭丰亮 | Biomass dust removal heat exchanger |
| CN102777891A (en) * | 2012-07-19 | 2012-11-14 | 无锡华光锅炉股份有限公司 | Furnace combustion structure for reducing NOx (nitrogen oxide) discharge |
| CN103604117A (en) * | 2013-11-04 | 2014-02-26 | 武汉和信益科技有限公司 | Multi-grade high-efficiency low-nitrogen combustion method and multi-grade high-efficiency low-nitrogen combustion system for circulating fluidized bed boiler |
| CN103604117B (en) * | 2013-11-04 | 2015-12-30 | 武汉和信益科技有限公司 | The efficient low nitrogen burning method of the multiple classification of CFBB and combustion system |
| CN105318323A (en) * | 2015-11-03 | 2016-02-10 | 广西桂晟新能源科技有限公司 | Method for applying biomass gasification gas in coal combustion process |
| CN107084386A (en) * | 2017-03-16 | 2017-08-22 | 广东正鹏生物质能源科技有限公司 | A kind of integrated gasification fired boiler system of biomass |
| CN107255269A (en) * | 2017-06-07 | 2017-10-17 | 国电科学技术研究院 | Station boiler system and station boiler integrate the method that gasification of biomass afterburning improves afterbody cigarette temperature |
| CN109966915A (en) * | 2019-03-29 | 2019-07-05 | 北京国电龙源环保工程有限公司 | A kind of gasification of biomass coupling coal-burning boiler full load SCR denitration system and process |
| CN110173695A (en) * | 2019-04-29 | 2019-08-27 | 同济大学 | A method of inhibiting NO_x formation in meat meal tankage pyrolysis devolatilization divided combustion |
| CN111006207A (en) * | 2019-12-09 | 2020-04-14 | 华中科技大学 | Biomass fluidized bed direct combustion system and denitration method thereof |
| CN112664979A (en) * | 2020-12-28 | 2021-04-16 | 华北电力大学 | Cooking range |
| CN112892206A (en) * | 2021-03-23 | 2021-06-04 | 四川大学 | Biomass fast pyrolysis and pyrolysis gas combustion flue gas denitration coupling method and device |
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