CN202008139U - Lignite cyclone burner - Google Patents

Lignite cyclone burner Download PDF

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Publication number
CN202008139U
CN202008139U CN 201120050214 CN201120050214U CN202008139U CN 202008139 U CN202008139 U CN 202008139U CN 201120050214 CN201120050214 CN 201120050214 CN 201120050214 U CN201120050214 U CN 201120050214U CN 202008139 U CN202008139 U CN 202008139U
Authority
CN
China
Prior art keywords
wind
interior
burner
airduct
cyclone
Prior art date
Application number
CN 201120050214
Other languages
Chinese (zh)
Inventor
张彦军
路野
于强
栾世健
胡凌峰
王通
杨秀军
于龙
Original Assignee
哈尔滨锅炉厂有限责任公司
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 哈尔滨锅炉厂有限责任公司 filed Critical 哈尔滨锅炉厂有限责任公司
Priority to CN 201120050214 priority Critical patent/CN202008139U/en
Application granted granted Critical
Publication of CN202008139U publication Critical patent/CN202008139U/en

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Abstract

The utility model relates to a lignite cyclone burner. Partial boiler cyclone burners have the problems of high NOx emission, nozzle coking, primary wind pipe abrasion and the like. In order to avoid the condition that serious coking causes the failure in realizing larger graded combustion and further results into higher NOx emission, the product is provided. The product comprises a central wind pipe (1), the outer side of the center wind pipe is sleeved with a primary wind pipe (2), a pulverized coal concentrator (3) is mounted on the inner side of the primary wind pipe, the outer side of the primary wind pipe is connected with a burner front plate (4), an inner secondary wind box (5), an adjustable inner secondary wind cyclone (6), an inner secondary wind pipe (16) and an outer secondary wind flaring (7), and the inner secondary wind pipe is connected with the adjustable inner secondary wind cyclone and an outer secondary wind pipe (17). The product is used for the cyclone burner of a lignite coiler.

Description

The brown coal turbulent burner

Technical field:

Utility model relates to a kind of brown coal turbulent burner that is used for boiler combustion system.

Background technology:

Part boiler turbulent burner exists NOx discharging height, spout coking, a problem such as airduct wearing and tearing., can not realize turbulent burner that bigger fractional combustion causes the higher phenomenon of NOx discharging thereby existing serious coking.

Summary of the invention:

The purpose of utility model provides a kind of brown coal turbulent burner, life-span height, flame stabilization, has guaranteed near burner throat place stable flame.

Above-mentioned purpose realizes by following technical scheme:

The brown coal turbulent burner, its composition comprises: central air hose, once airduct is overlapped in the described central air hose outside, pulverized coal concentrator is equipped with in a described airduct inboard, the described airduct outside connects burner header board, interior secondary air box, adjustable interior secondary wind cyclone, interior secondary air channel and the enlarging of outer secondary wind, and described interior secondary air channel connects adjustable outer secondary wind cyclone and outer secondary air channel.

Described brown coal turbulent burner, the outer wall of described central air hose is installed wearing layer, and described central air hose one end has steady combustion tooth and Venturi tube, and described airduct one end has steady combustion ring and the enlarging of interior secondary wind.

Described brown coal turbulent burner, a described airduct comprises the coal powder entrance elbow, a described airduct inwall and described coal powder entrance elbow interior wall all have wearing layer, the secondary air box upper end has interior secondary windshield plate in described, the adjusting lever of secondary windshield plate passes the position that the burner panel is also externally adjusted baffle plate in described, described outer secondary wind is by the swirl strength of the outer secondary wind of connecting rod adjustment of adjustable outer secondary wind cyclone, and the swirl strength of interior secondary wind is then adjusted by the axial location of regulating cyclone.

Beneficial effect:

1. utility model has flameholding, and the low-load combustion-stabilizing ability is strong, the efficiency of combustion height, and NOx discharges advantages such as low, can prevent the spout coking effectively.Has good development prospect.This burner will achieve the desired result.

The utility model breeze airflow cooperates with interior secondary wind, outer secondary wind, has guaranteed keeping a stable flame near the burner throat place.

Every burner of utility model also has one center wind.With stabilize oil flame, prevent oily flame impingement central air hose and oil burner cyclone to an amount of center wind of burner central supply, also play the effect that prevents the burner coking simultaneously.

Utility model has high-abrasive material at central air hose outer wall and an airduct inwall, and improve several times its service life than before.An elegance direct current, so wind of burner inlet elbow adopts not iso-diameter elbow and has wear-resistant material layer.Owing to be space structure, design and manufacturing are all relatively more difficult.This structure is initiative.

Utility model is at electricity market coal requirement, the vortex burner that exploitation is fit to the burning brown coal has not only solved the problem that domestic power plant uses brown coal, and further widened the scope of application of vortex burner coal, have good and economic, adaptability and market potential, be domestic initiation, product advanced in the world.

. in brown coal turbulent burner of the present utility model, the air of burning is divided into four strands, i.e. wind, interior secondary wind, outer secondary wind and a center wind.One time wind is provided by primary air fan, enters and carries coal dust in the coal pulverizer, forms the primary wind and powder mixture, sends into burner hearth through burner inlet elbow and an airduct.Middle front part at a close burner hearth of airduct is provided with pulverized coal concentrator, before entering burner hearth at breeze airflow it is concentrated.Breeze airflow cooperates with interior secondary wind, outer secondary wind, has guaranteed keeping a stable flame near the burner throat place.

Be positioned at the bellows on the water-cooling wall before and after the burner hearth, in each burner is supplied with secondary wind with outside secondary wind.

Interior secondary wind and outer secondary wind enter burner hearth by concentric circular passage in the burner in the different phase of burning, and help the reduction of NOx total amount and the after-flame of fuel.The interior secondary windshield plate of burner is in order to the ratio of the secondary air flow of regulating each burner.The adjusting lever of baffle plate passes the position that the burner panel can be adjusted baffle plate at combustor external.Outer secondary wind and interior secondary wind produce necessary rotation by cyclone separately.The outer secondary wind of burner can be adjusted the swirl strength of outer secondary wind by connecting rod.The swirl strength of interior secondary wind is then adjusted by the axial location of regulating cyclone.

Description of drawings:

Accompanying drawing 1 is the structural representation of this product.

Accompanying drawing 2 is right views of accompanying drawing 1.

The specific embodiment:

Embodiment 1:

A kind of brown coal turbulent burner, its composition comprises: central air hose 1, once airduct 2 is overlapped in the described central air hose outside, pulverized coal concentrator 3 is equipped with in a described airduct inboard, the described airduct outside connects burner header board 4, interior secondary air box 5, adjustable interior secondary wind cyclone 6, interior secondary air channel 16 and outer secondary wind enlarging 7, and described interior secondary air channel connects adjustable outer secondary wind cyclone and outer secondary air channel 17.

Embodiment 2:

Embodiment 1 described brown coal turbulent burner, described central air hose 2 one ends have air port, center 11, and the described central air hose other end has center wind inlet 12, and the outer wall of described central air hose is installed high-abrasive material.Described central air hose 1 one ends are equipped with steady combustion tooth 8 and Venturi tube 9, and described airduct 2 one ends are equipped with steady combustion ring 10 and interior secondary wind enlarging 7.

Embodiment 3:

Embodiment 1 described brown coal turbulent burner, a described airduct comprise coal powder entrance elbow and a wind inlet, and a described airduct inwall and described coal powder entrance elbow interior wall all have wear-resistant material layer.

Embodiment 4:

Embodiment 1 described brown coal turbulent burner, described adjustable outer secondary wind cyclone has outer overfire air port 13 and interior overfire air port 14.

Embodiment 5:

Embodiment 1 described brown coal turbulent burner, secondary windshield plate 15 is equipped with in described secondary air box upper end.

Claims (3)

1. brown coal turbulent burner, its composition comprises: central air hose, it is characterized in that: once airduct is overlapped in the described central air hose outside, pulverized coal concentrator is equipped with in a described airduct inboard, the described airduct outside connects burner header board, interior secondary air box, adjustable interior secondary wind cyclone, interior secondary air channel and the enlarging of outer secondary wind, and described interior secondary air channel connects adjustable outer secondary wind cyclone and outer secondary air channel.
2. brown coal turbulent burner according to claim 1, it is characterized in that: the outer wall of described central air hose is installed wearing layer, described central air hose one end has steady combustion tooth and Venturi tube, and described airduct one end has steady combustion ring and the enlarging of interior secondary wind.
3. brown coal turbulent burner according to claim 1 and 2, it is characterized in that: a described airduct comprises the coal powder entrance elbow, a described airduct inwall and described coal powder entrance elbow interior wall all have wearing layer, the secondary air box upper end has interior secondary windshield plate in described, and the adjusting lever of described interior secondary windshield plate passes the burner panel and externally adjusts the position of baffle plate.
CN 201120050214 2011-02-28 2011-02-28 Lignite cyclone burner CN202008139U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120050214 CN202008139U (en) 2011-02-28 2011-02-28 Lignite cyclone burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120050214 CN202008139U (en) 2011-02-28 2011-02-28 Lignite cyclone burner

Publications (1)

Publication Number Publication Date
CN202008139U true CN202008139U (en) 2011-10-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201120050214 CN202008139U (en) 2011-02-28 2011-02-28 Lignite cyclone burner

Country Status (1)

Country Link
CN (1) CN202008139U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102102872A (en) * 2011-02-28 2011-06-22 哈尔滨锅炉厂有限责任公司 Lignite rotational flow combustor
CN103206711A (en) * 2013-03-20 2013-07-17 洛阳腾节炉业科技有限公司 Heat accumulating type double-volute flat flame burner nozzle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102102872A (en) * 2011-02-28 2011-06-22 哈尔滨锅炉厂有限责任公司 Lignite rotational flow combustor
CN102102872B (en) * 2011-02-28 2015-10-07 哈尔滨锅炉厂有限责任公司 Brown coal turbulent burner
CN103206711A (en) * 2013-03-20 2013-07-17 洛阳腾节炉业科技有限公司 Heat accumulating type double-volute flat flame burner nozzle
CN103206711B (en) * 2013-03-20 2015-09-16 洛阳腾节炉业科技有限公司 The two snail flat flame burner of a kind of heat accumulating type

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111012

Termination date: 20160228

CF01 Termination of patent right due to non-payment of annual fee