CN102322633A - Pure-oxygen pulverized coal entraining combustor - Google Patents
Pure-oxygen pulverized coal entraining combustor Download PDFInfo
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- CN102322633A CN102322633A CN201110274344A CN201110274344A CN102322633A CN 102322633 A CN102322633 A CN 102322633A CN 201110274344 A CN201110274344 A CN 201110274344A CN 201110274344 A CN201110274344 A CN 201110274344A CN 102322633 A CN102322633 A CN 102322633A
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- oxygen
- pulverized coal
- flue gas
- central
- circumferential weld
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Abstract
The invention relates to a pure-oxygen pulverized coal entraining combustor, which comprises a pulverized coal nozzle arranged at the middle part of a combustor block, a pulverized coal feeding flue gas channel, a plurality of circular seam oxygen guns arranged at the circumference of the pulverized coal nozzle, a circular seam oxygen chamber connected to the outer ends of the plurality of circular seam oxygen guns, a central oxygen gun arranged in the pulverized coal flue gas channel and a circular seam oxygen inlet arranged on the central oxygen gun and communicated with the circular seal oxygen chamber. The length of flame of the combustor can be adjusted by adjusting flow adjusting valves on a central oxygen pipeline and a circular seam oxygen pipeline. Pulverized coal-containing flue gas is sprayed out from the pulverized coal flue gas channel, the central oxygen is sprayed out from the central oxygen gun positioned in the center of the pulverized coal flue gas channel, the pulverized coal flue gas and the central oxygen are premixed and burnt to form a stable root flame, therefore the fuel can be saved by 35 percent, the flue gas amount can be reduced by 70 percent, and nitric oxides contained in the flue gas are avoided.
Description
Technical field
The present invention relates to a kind of burner, especially a kind of coal powder pure oxygen of industrial furnace that is applicable to entrainments burner.
Background technology
The coal burner of industrial furnace mainly is made up of coal dust spout, a wind passage that feeds the coal dust spout and the secondary air channel of a wind passage outer ring at present; All be combustion adjuvant and powder feeding medium with the air; Adopt a wind powder feeding, wind, secondary wind are combustion-supporting, though can play combustion-supporting effect; But real combustion adjuvant only accounts for the oxygen of combustion air volume 21% in the Actual combustion process, and all the other 79% are mainly nitrogen.The nitrogen that accounts for combustion air volume 79% is heated to the fuel that fire box temperature needs labor from environment temperature, and this part nitrogen will be with fume emission in air, so the discharge capacity of the consumption of fuel and flue gas is very big.And part nitrogen will generate harmful discharged nitrous oxides in air with oxygen in combustion process, and this will cause certain destruction to environment.
Summary of the invention
Technical problem: the object of the invention overcomes the weak point in the prior art, provides a kind of coal powder pure oxygen simple in structure, that reduce smoke discharge amount to entrainment burner.
Technical scheme: coal powder pure oxygen of the present invention entrainments burner; Comprise the coal dust spout that is located at the burner block middle part; Feed the powder feeding exhaust gases passes in the coal dust spout, be provided with a plurality of circumferential weld oxygen lances around the said powder feeding exhaust gases passes, a plurality of circumferential weld oxygen lances outer end is connected with circumferential weld oxygen room; Be provided with the central oxygen air gun in the described powder feeding exhaust gases passes, the central oxygen air gun is provided with the circumferential weld oxygen intake that is connected with circumferential weld oxygen room; Described a plurality of circumferential weld oxygen lance is 2～4.
Beneficial effect: owing to adopted technique scheme, be combustion adjuvant with the pure oxygen, circulating flue gas is the powder feeding medium; Flame propagation velocity is obviously accelerated; The length of flame shortens during than air-breathing, and is consistent during with air-breathing with length in order to guarantee flame profile, and coal powder pure oxygen entrainments center oxygen and the circumferential weld oxygen of burner with very high flow velocity ejection; The mixed zone of coal dust and oxygen is elongated, reach the purpose of elongating flame.Through regulating center oxygen and circumferential weld oxygen pipeline flow control valve, can adjust the length of burner flame.Containing the powder flue gas sprays from the powder feeding exhaust gases passes; Central oxygen contains powder flue gas and center oxygen premixed combustion by the central oxygen air gun ejection that is positioned at powder feeding exhaust gases passes center, forms stable root flame; Entrainment combustion technology through pure oxygen; Part oxygen is sprayed at a high speed from many circumferential weld oxygen lances that powder feeding exhaust gases passes outer periphery is uniformly distributed with, entrainment inner flue gas of the stove, so that coal powder pure oxygen entrainments the temperature field and the field of flow of burner is very even; Reduced the ignition temperature of burner nozzle; And the required oxygen of aftercombustion, form and form stable flame behind strong shearing, stretching, the stirring action with containing powder flue gas jet, can not cause burner hearth refractory lining hot-spot, scaling loss.Effect is remarkable aspect energy-saving and emission-reduction, and is capable of saving fuel 35%, reduces exhaust gas volumn 70%, avoids containing in the flue gas nitrogen oxide.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure: 1-powder feeding exhaust gases passes, 2-center oxygen intake, 3-circumferential weld oxygen intake, 4-circumferential weld oxygen room, 5-central oxygen air gun, 6-burner block, 7-circumferential weld oxygen lance, 8-coal dust spout.
The specific embodiment
Below in conjunction with accompanying drawing one embodiment of the present of invention are done further to describe:
As shown in Figure 1, coal powder pure oxygen of the present invention entrainments burner, mainly is made up of powder feeding exhaust gases passes 1, central oxygen air gun 5, circumferential weld oxygen room 4, circumferential weld oxygen lance 7, burner block 6.The middle part of burner block 6 is provided with coal dust spout 8; Powder feeding exhaust gases passes 1 feeds in the coal dust spout 8; Be provided with 2～4 circumferential weld oxygen lances 7 around the powder feeding exhaust gases passes 1; 2～4 circumferential weld oxygen lance 7 outer ends are connected with circumferential weld oxygen room 4, are provided with the central oxygen air gun 5 that oxygen intake 2 gets into from the center in the powder feeding exhaust gases passes 1, and central oxygen air gun 5 is provided with the circumferential weld oxygen intake 3 that is connected with circumferential weld oxygen room 4.
The operation principle and the course of work: contain the powder flue gas from 1 ejection of powder feeding exhaust gases passes, the central oxygen air gun 5 ejection center oxygen through powder feeding exhaust gases passes 1 make to contain powder flue gas and center oxygen premixed combustion, form stable root flame.Many the circumferential weld oxygen lances 7 that are uniformly distributed with from powder feeding exhaust gases passes 1 outer periphery spray circumferential weld oxygen at a high speed; Entrainment inner flue gas of the stove; Thereby reduced the ignition temperature of burner nozzle; And the required oxygen of aftercombustion, and contain powder flue gas jet and form and form stable flame behind strong shearing, stretching, the stirring action.Central oxygen tolerance and circumferential weld amount of oxygen can be regulated respectively through the flow control valve that is located at central oxygen air pipe and circumferential weld oxygen pipeline.
Claims (2)
1. a coal powder pure oxygen entrainments burner; Comprise the coal dust spout (8) that is located at burner block (6) middle part; Feed the powder feeding exhaust gases passes (1) in the coal dust spout (8); It is characterized in that: be provided with a plurality of circumferential weld oxygen lances (7) around the said powder feeding exhaust gases passes (1); A plurality of circumferential weld oxygen lances (7) outer end is connected with circumferential weld oxygen room (4), is provided with central oxygen air gun (5) in the described powder feeding exhaust gases passes (1), and central oxygen air gun (5) is provided with the circumferential weld oxygen intake (3) that is connected with circumferential weld oxygen room (4).
2. coal powder pure oxygen according to claim 1 entrainments burner, it is characterized in that: described a plurality of circumferential weld oxygen lances (7) are 2～4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110274344A CN102322633A (en) | 2011-09-16 | 2011-09-16 | Pure-oxygen pulverized coal entraining combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110274344A CN102322633A (en) | 2011-09-16 | 2011-09-16 | Pure-oxygen pulverized coal entraining combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102322633A true CN102322633A (en) | 2012-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110274344A Pending CN102322633A (en) | 2011-09-16 | 2011-09-16 | Pure-oxygen pulverized coal entraining combustor |
Country Status (1)
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| CN (1) | CN102322633A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528057A (en) * | 2013-11-06 | 2014-01-22 | 王立臣 | Pulverized coal oxygen-rich combustor |
| CN106402866A (en) * | 2016-11-14 | 2017-02-15 | 安德森热能科技（苏州）有限责任公司 | Pure oxygen combustor with changeable flame shapes and method for changing flame shapes |
| CN107300170A (en) * | 2017-08-11 | 2017-10-27 | 云汇环保科技南通有限公司 | A kind of fine coal all-oxygen combustion device on smelting kiln |
| CN108061301A (en) * | 2018-01-23 | 2018-05-22 | 上海云汇环保科技有限公司 | A kind of novel steel ladle baking burner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1061910A (en) * | 1996-08-21 | 1998-03-06 | Daido Steel Co Ltd | Pulverized coal burner for powder thermal-spraying |
| US20090280442A1 (en) * | 2008-05-05 | 2009-11-12 | American Air Liquide Inc. | Device And Method Of Combusting Solid Fuel With Oxygen |
| CN101169243B (en) * | 2006-10-24 | 2010-10-27 | 气体产品与化学公司 | Pulverized solid fuel burner |
| CN201803364U (en) * | 2010-05-28 | 2011-04-20 | 华中科技大学 | Compact type oxygen-enriched combustor |
-
2011
- 2011-09-16 CN CN201110274344A patent/CN102322633A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1061910A (en) * | 1996-08-21 | 1998-03-06 | Daido Steel Co Ltd | Pulverized coal burner for powder thermal-spraying |
| CN101169243B (en) * | 2006-10-24 | 2010-10-27 | 气体产品与化学公司 | Pulverized solid fuel burner |
| US20090280442A1 (en) * | 2008-05-05 | 2009-11-12 | American Air Liquide Inc. | Device And Method Of Combusting Solid Fuel With Oxygen |
| CN201803364U (en) * | 2010-05-28 | 2011-04-20 | 华中科技大学 | Compact type oxygen-enriched combustor |
Non-Patent Citations (1)
| Title |
|---|
| 吴黎明等: "富氧燃烧技术的研究发展与分析", 《锅炉技术》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528057A (en) * | 2013-11-06 | 2014-01-22 | 王立臣 | Pulverized coal oxygen-rich combustor |
| CN103528057B (en) * | 2013-11-06 | 2015-10-21 | 王立臣 | Coal dust oxygen-enriched burner |
| CN106402866A (en) * | 2016-11-14 | 2017-02-15 | 安德森热能科技（苏州）有限责任公司 | Pure oxygen combustor with changeable flame shapes and method for changing flame shapes |
| CN107300170A (en) * | 2017-08-11 | 2017-10-27 | 云汇环保科技南通有限公司 | A kind of fine coal all-oxygen combustion device on smelting kiln |
| CN108061301A (en) * | 2018-01-23 | 2018-05-22 | 上海云汇环保科技有限公司 | A kind of novel steel ladle baking burner |
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Application publication date: 20120118 |