CN201170547Y - Oxygenation combustion-supporting device for fire coal electrification boiler of circulating fluid bed - Google Patents
Oxygenation combustion-supporting device for fire coal electrification boiler of circulating fluid bed Download PDFInfo
- Publication number
- CN201170547Y CN201170547Y CNU200720158963XU CN200720158963U CN201170547Y CN 201170547 Y CN201170547 Y CN 201170547Y CN U200720158963X U CNU200720158963X U CN U200720158963XU CN 200720158963 U CN200720158963 U CN 200720158963U CN 201170547 Y CN201170547 Y CN 201170547Y
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- Prior art keywords
- oxygen enrichment
- oxygen
- combustion
- carrier pipe
- furnace
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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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model relates to an oxygenation combustion-supporting device that is used for a cycling fluidized bed coal power generation furnace, and comprises a filter (1), a blower (2), a membrane separator (3), a pump (4) and a dehumidifier (5), wherein, a pre-heating device (6) is arranged behind the dehumidifier (5); an oxygen-enrichment conveying pipe is arranged inside the pre-heating device (6); the input end of the conveying pipe is connected with the outlet of the dehumidifier (5); an oxygen-enrichment nozzle (7) is arranged at the output end port of the conveying pipe. The device delivers the oxygen enrichment into the hearth by the way of the secondary wind, so that the integral or partial oxygen content inside the furnace can be increased, and the integral air surplus coefficient inside the furnace can be reduced, and the heat loss caused by the large surplus coefficient of the air inside the furnace can be effectively reduced, and the smoke exhaustion temperature can be reduced; at the same time, because of the increasing rich oxygen, the ignition condition can be improved, so that the combustion can be performed completely, thereby guaranteeing the environmental protection effect while saving the coal.
Description
Technical field
The utility model belongs to boiler auxiliary combustion equipment, is specially the oxygenation combustion-supporting apparatus that is used for the circulating fluidized bed combustion coal electricity generation boiler.
Background technology
CFBB is efficient, a low clean burning technology of polluting that grows up the nearly more than ten years, because of it devices such as distinctive gas-solid separator, returning charge circulation has been installed at combustor exit, makes its burning of dynamic Control with low temperature; At a high speed, technical characterstics such as high concentration, heat, quality and Momentum Transfer process, also have many advantages such as energy-saving and environmental protection simultaneously.Because of advantages such as it have that efficiency of combustion height, coal adaptability are wide, noxious gas emission concentration is low in the flue gas, load regulation range big, lime-ash can fully utilize; under current increasingly serious energy scarcity and environmental protection requirement; obtained development rapidly at home and abroad; commercialization is to large scale development.
The after-flame degree of fuel is very high in the CFBB, and well behaved in theory burning in circulating fluid bed boiler efficient can reach more than 90～95%.Actual efficiency is difficult to arrive the level of design, exists certain energy-saving potential but for various reasons.The analysis showed that one oxygen deprivation core space is arranged at burner hearth secondary wind top, this be owing to secondary wind penetrate the not good result who makes oxygen can not arrive burner hearth middle part of diffusion effect, fine grain burning has produced negative effect for core space for this.Practice shows, and is when the gas oxygen tolerance of boiler combustion reaches 25% when above, energy-conservation up to 20%; The boiler startup heating-up time shortens 1/2-2/3.
Summary of the invention
In order to overcome the deficiency of existing boiler combustion technology, the utility model provides a kind of oxygenation combustion-supporting apparatus that is used for the circulating fluidized bed combustion coal electricity generation boiler, this device is sent into burner hearth with oxygen enrichment in the mode of secondary wind, increase in the stove oxygen content in whole or in part, reduce integrated air coefficient of excess in the stove, effectively reduce since coefficient of excess air when big the air coefficient of surplus heat is taken away, reduce exhaust gas temperature.Because the increase of oxygen enrichment can improve the condition of catching fire, burning has also guaranteed the effect of environmental protection fully when economizing on coal.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of oxygenation combustion-supporting apparatus that is used for the circulating fluidized bed combustion coal electricity generation boiler, comprise the filter, blower fan, membrane separator, pump, the moisture eliminator that connect in turn, behind moisture eliminator, be connected with preheating device, be provided with the oxygen enrichment carrier pipe in the preheating device, the input of carrier pipe connects the outlet of moisture eliminator, the output port of carrier pipe is connected with the oxygen enrichment nozzle.
The above-mentioned oxygenation combustion-supporting apparatus that is used for the circulating fluidized bed combustion coal electricity generation boiler, preheating device is for being provided with the oxygen enrichment carrier pipe in the scum pipe of boiler; The oxygen enrichment carrier pipe is located in the secondary air channel after preheating device output, and the two forms the form of tube-in-tube oxygen enrichment is sent in the burner hearth; The oxygen enrichment carrier pipe is located in the bottom secondary air channel; Front wall, back wall are provided with three oxygen enrichment carrier pipes at least.
Design feature of the present utility model and beneficial effect show: because the increase of oxygen enrichment can improve the condition of catching fire, burning has also guaranteed the effect of environmental protection fully when economizing on coal.
The pre-heating system that is provided with effectively reduce since coefficient of excess air when big the air coefficient of surplus heat is taken away, reduce exhaust gas temperature; Both cool off slag, alleviated the burden of boiler slag-cooling machine, made full use of heat waste again, also reached the requirement of heating oxygen enrichment.
Oxygen-enriched combustion technology can not only make separated and collected CO and treatment S O carry out easily, can also reduce NOX discharging, is a kind of novel clean combustion technology that can the discharging of Comprehensive Control pollution that caused by coal burning thing.
Description of drawings
Fig. 1 is the schematic diagram of the utility model structure.
The specific embodiment
As shown in Figure 1, the 1st, filter, the 2nd, blower fan, the 3rd, membrane separator, the 4th, pump, the 5th, moisture eliminator, the 6th, preheating device, the 7th, oxygen enrichment nozzle.
A kind of oxygenation combustion-supporting apparatus that is used for the circulating fluidized bed combustion coal electricity generation boiler, comprise the filter 1, blower fan 2, membrane separator 3, pump 4, the moisture eliminator 5 that connect in turn, behind moisture eliminator 5, be connected with preheating device 6, be provided with the oxygen enrichment carrier pipe in the preheating device 6, the input of carrier pipe connects the outlet of moisture eliminator 5, the output port of carrier pipe is connected with oxygen enrichment nozzle 7.
The above-mentioned oxygenation combustion-supporting apparatus that is used for the circulating fluidized bed combustion coal electricity generation boiler, preheating device 6 is for being provided with the oxygen enrichment carrier pipe in the scum pipe of boiler.
The oxygen enrichment carrier pipe is located in the secondary air channel after preheating device 6 outputs, and the two forms the form of tube-in-tube oxygen enrichment is sent in the burner hearth; The oxygen enrichment carrier pipe is located in the bottom secondary air channel, and front wall is provided with five air-supply points, the back wall is provided with six air-supply points.The oxygen enrichment nozzle adopts heat-resisting nozzle, and for guaranteeing the oxygen enrichment penetration power, blast is greater than secondary blast and furnace pressure.
Claims (4)
1, a kind of oxygenation combustion-supporting apparatus that is used for the circulating fluidized bed combustion coal electricity generation boiler, comprise the filter (1), blower fan (2), membrane separator (3), pump (4), the moisture eliminator (5) that connect in turn, it is characterized in that: behind moisture eliminator (5), be connected with preheating device (6), preheating device is provided with the oxygen enrichment carrier pipe in (6), and the input of carrier pipe connects the outlet of moisture eliminator (5), the output port of carrier pipe is connected with oxygen enrichment nozzle (7).
2, the oxygenation combustion-supporting apparatus that is used for the circulating fluidized bed combustion coal electricity generation boiler according to claim 1 is characterized in that: preheating device (6) is for being provided with the oxygen enrichment carrier pipe in the scum pipe of boiler.
3, the oxygenation combustion-supporting apparatus that is used for the circulating fluidized bed combustion coal electricity generation boiler according to claim 2 is characterized in that: the oxygen enrichment carrier pipe is located in the secondary air channel after preheating device (6) output, and the two forms the form of tube-in-tube oxygen enrichment is sent in the burner hearth.
4, the oxygenation combustion-supporting apparatus that is used for the circulating fluidized bed combustion coal electricity generation boiler according to claim 3 is characterized in that: the oxygen enrichment carrier pipe is located in the bottom secondary air channel; Front wall, back wall are provided with three oxygen enrichment carrier pipes at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720158963XU CN201170547Y (en) | 2007-12-17 | 2007-12-17 | Oxygenation combustion-supporting device for fire coal electrification boiler of circulating fluid bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720158963XU CN201170547Y (en) | 2007-12-17 | 2007-12-17 | Oxygenation combustion-supporting device for fire coal electrification boiler of circulating fluid bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201170547Y true CN201170547Y (en) | 2008-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720158963XU Expired - Fee Related CN201170547Y (en) | 2007-12-17 | 2007-12-17 | Oxygenation combustion-supporting device for fire coal electrification boiler of circulating fluid bed |
Country Status (1)
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| CN (1) | CN201170547Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588996A (en) * | 2012-03-07 | 2012-07-18 | 上海锅炉厂有限公司 | Oxygen-enriched combustion system |
| CN102628590A (en) * | 2012-03-20 | 2012-08-08 | 广东电网公司电力科学研究院 | Biomass circulating fluidized bed direct combustion apparatus |
| CN102927566A (en) * | 2012-11-15 | 2013-02-13 | 辽宁省电力有限公司电力科学研究院 | Correcting method for secondary air quantity curve of conventional boiler after local oxygen-enriched combustion transformation |
-
2007
- 2007-12-17 CN CNU200720158963XU patent/CN201170547Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588996A (en) * | 2012-03-07 | 2012-07-18 | 上海锅炉厂有限公司 | Oxygen-enriched combustion system |
| CN102588996B (en) * | 2012-03-07 | 2015-02-18 | 上海锅炉厂有限公司 | Oxygen-enriched combustion system |
| CN102628590A (en) * | 2012-03-20 | 2012-08-08 | 广东电网公司电力科学研究院 | Biomass circulating fluidized bed direct combustion apparatus |
| CN102628590B (en) * | 2012-03-20 | 2014-09-17 | 广东电网公司电力科学研究院 | Biomass circulating fluidized bed direct combustion apparatus |
| CN102927566A (en) * | 2012-11-15 | 2013-02-13 | 辽宁省电力有限公司电力科学研究院 | Correcting method for secondary air quantity curve of conventional boiler after local oxygen-enriched combustion transformation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20100118 |