CN101315189B

CN101315189B - Graded wind-adjusting low NOX multi-fuel combustion device

Info

Publication number: CN101315189B
Application number: CN2008100226110A
Authority: CN
Inventors: 王文举; 李鹏云
Original assignee: XUZHOU COMBUSTION CONTROL RESEARCH INSTITUTE Co Ltd
Current assignee: XUZHOU KERONG ENVIRONMENTAL RESOURCES CO., LTD.
Priority date: 2008-07-03
Filing date: 2008-07-03
Publication date: 2011-05-04
Anticipated expiration: 2028-07-03
Also published as: CN101315189A

Abstract

The invention relates to a multi-channel low NOx co-combustion burner. The burner comprises a tubular primary air pipe, a combustible gas pipe, a cold air pipe, a coal flow pipe, a secondary air pipe and a tertiary air pipe, which are sleeved and fixed coaxially and sequentially. A flame detector is arranged between the combustible gas pipe and the primary air pipe. A secondary air whirling blade and a tapered secondary air baffle are arranged between the secondary air pipe and the coal flow pipe. A screw rod regulating shaft is arranged on one side of the tapered secondary air baffle. A tertiary air flow regulating tube is sleeved outside the tertiary air pipe and has the same diameter as the tertiary air pipe. A tertiary air adjustable whirling blade is arranged between a tertiary air conical tube and the secondary air pipe. A screw rod regulating shaft is arranged on one side of the tertiary air adjustable whirling blade. The burner can burn oil, combustible gas and coal independently or at the same time, has high adaptability to coal qualities, ensures stable and complete combustion of fuels, minimizes the formation of NOx and reduces the discharge of harmful substances.

Description

The low NO of wind is transferred in classification xThe multifuel combustion burner

Technical field

The present invention relates to the burner of boiler, the low NO of wind is transferred in especially a kind of classification of combustion oil, combustion gas and three kinds of coal dusts or a certain fuel simultaneously _XThe multifuel combustion burner.

Background technology

At present, the boiler-burner of common model is because fuel is single, exist some defective on the structure, just can cause burning not thorough, insufficient, this not only wastes, and can discharge many harmful materials, because it is narrower to the adaptability of ature of coal, therefore bad adaptability to this, does not also have very good solution at present.

Summary of the invention

In order to solve the problem that some boilers exist, the invention provides a kind of classification and transfer the low NO of wind _XThe multifuel combustion burner, this burner is simultaneously combustion oil, combustion gas and three kinds of fuel of coal dust not only, and also can distinguish a certain fuel that burns separately, and is very wide very strong to the adaptability of ature of coal, it can make the more stable, more thorough, more abundant of fuel combustion, can effectively reduce emission of harmful substances.

The present invention solves the concrete scheme that its technical problem adopts: this burner is made up of airduct, secondary air channel, cool air hose, tertiary-air pipe, a secondary wind eddy flow impeller, tertiary air is adjustable eddy flow impeller, oil gun pipe, Gas Pipe, flame detector, coal pipe and igniter; It is characterized in that: this burner is fixedly formed by the order suit of an airduct, Gas Pipe, cool air hose, coal pipe, secondary air channel and each concentric of tertiary-air pipe of tubulose respectively; The oil gun Guan Youhou of tubulose is inserted into the port of an airduct forward, and concordant with port, is fixed on the place, axle center of an airduct; The tail end of cool air hose, airduct and Gas Pipe is connected with horizontal cool air hose flange, wind flange and Gas Pipe inlet flange respectively; Coal pipe is sleeved on the cool air hose periphery, and a quarter bend has been rolled at its rear portion, has formed the coal pipe inlet flange; One time airduct, Gas Pipe, cool air hose, coal pipe and secondary air channel are isometrical pipe; Between Gas Pipe and the airduct, flame detector is housed; Between secondary air channel and the coal pipe, secondary wind eddy flow impeller is housed, it can change over eddy flow wind to secondary wind and spray from spout; Outside the secondary air channel tail end, but the secondary windshield plate of tapering shape of a dish axially-movable is installed, its side has the screw mandrel regulating shaft, by this advance and retreat, can regulate its distance of airduct tail end mouth therewith, the size that can regulate secondary air flow; The tertiary-air pipe first half is the tertiary air Taper Pipe, latter half of is isometrical pipe, in isometrical pipe outer race isometrical tertiary air air quantity adjustable pipe is housed, one side of tertiary air air quantity adjustable pipe has the screw mandrel regulating shaft, by its side-to-side movement, the covering that drives the air inlet of tertiary air air quantity adjustable pipe is moved, and can regulate the size of tertiary air air quantity; Between tertiary air Taper Pipe and secondary air channel, the adjustable eddy flow impeller of tertiary air is installed, its side also is equipped with the screw mandrel regulating shaft, by this screw mandrel regulating shaft side-to-side movement, regulate the distance of the adjustable eddy flow impeller of tertiary air and tertiary air Taper Pipe wall, adjustable solar term flow the length and the size variation of eddy flow ratio, can control the admixture of eddy flow wind and wind, cooling air, change the position and the size of recirculating zone, reach and regulate flame profile and make burning keep stable purpose.

Its beneficial effect is: the low NO of wind is transferred in this classification _XThe multifuel combustion burner, not only simultaneously combustion oil, combustion gas and three kinds of fuel of coal dust, and also can distinguish a certain fuel that burns separately, also very wide very strong to the adaptability of ature of coal, simultaneously, also can make the more stable, more thorough, more abundant of fuel combustion, can effectively reduce NO _XGrowing amount, and reduce emission of harmful substances.

Description of drawings

The invention will be further described below in conjunction with drawings and the embodiments;

Accompanying drawing is a structural representation of the present invention;

Among the figure, 1. cool air hose flange, 1 '. once wind flange, 2. flame detector, 3. oil gun pipe, 4. Gas Pipe inlet flange, 5. coal pipe inlet flange, 6. secondary windshield plate, 7. tertiary air air quantity adjustable pipe, 8. secondary wind eddy flow impeller, the 9. adjustable eddy flow impeller of tertiary air, 10. an airduct, 11. Gas Pipe, 12. igniters, 13. coal pipes, 14. secondary air channels, 15. tertiary-air pipe, 16. cool air hoses, 17. tertiary air Taper Pipes, 18. the screw mandrel regulating shaft, 19. screw mandrel regulating shafts, 20. screw mandrel regulating shafts.

The specific embodiment

In the drawings, this burner is by airduct 10, secondary air channel 14, cool air hose 16, tertiary-air pipe 15, and secondary wind eddy flow impeller 8, tertiary air is adjustable eddy flow impeller 9, oil gun pipe 3, Gas Pipe 11, flame detector 2, coal pipe 13 and igniter 12 are formed; It is characterized in that: this burner is fixedly formed by the order suit of an airduct 10, Gas Pipe 11, cool air hose 16, coal pipe 13, secondary air channel 14 and tertiary-air pipe 15 each concentric of tubulose respectively; The oil gun pipe 3 of tubulose by after be inserted into the port of an airduct 10 forward, and concordant with port, be fixed on the place, axle center of an airduct 10; The tail end of cool air hose 16, airduct 10 and Gas Pipe 11 is connected with horizontal cool air hose flange 1, a wind flange 1 ' and a Gas Pipe inlet flange 4 respectively; Coal pipe 13 is sleeved on cool air hose 16 peripheries, and a quarter bend has been rolled at its rear portion, has formed coal pipe inlet flange 5; One time airduct 10, Gas Pipe 11, cool air hose 16, coal pipe 13 and secondary air channel 14 are isometrical pipe; Between Gas Pipe 11 and the airduct 10, flame detector 2 is housed; Between secondary air channel 14 and the coal pipe 13, around coal pipe 13, secondary wind eddy flow impeller 8 is housed, it can change over eddy flow wind to secondary wind and spray from spout; Outside secondary air channel 14 tail ends, but the secondary windshield plate 6 of tapering shape of a dish axially-movable is installed, its side has screw mandrel regulating shaft 19, by this advance and retreat, can regulate its distance of airduct tail end mouth therewith, the size that can regulate secondary air flow; Tertiary-air pipe 15 first halfs are tertiary air Taper Pipe 17, latter half of is isometrical pipe, in isometrical pipe outer race isometrical tertiary air air quantity adjustable pipe 7 is housed, one side of tertiary air air quantity adjustable pipe 7 has screw mandrel regulating shaft 20, by its side-to-side movement, the air inlet that drives tertiary air air quantity adjustable pipe 7 covers and moves the air quantity size that can regulate tertiary air; Between tertiary air Taper Pipe 17 and secondary air channel 14, the adjustable eddy flow impeller 9 of tertiary air is installed, its side also is equipped with screw mandrel regulating shaft 18, by this screw mandrel regulating shaft 18 side-to-side movement, regulate the distance of the adjustable eddy flow impeller 9 of tertiary air and tertiary air Taper Pipe 17 walls, the length and the size of adjustable solar term stream eddy flow ratio can be controlled the admixture of eddy flow wind and wind, cooling air, change the position and the size of recirculating zone, reach and regulate flame profile and make burning keep stable purpose.

In the drawings, this burner is combustion oil, combustion gas and coal dust simultaneously, and a certain fuel also can burn separately.

Claims

1. the low NO of wind is transferred in classification _XThe multifuel combustion burner, this burner is by an airduct (10), secondary air channel (14), cool air hose (16), tertiary-air pipe (15), and secondary wind eddy flow impeller (8), tertiary air is adjustable eddy flow impeller (9), oil gun pipe (3), Gas Pipe (11), flame detector (2), coal pipe (13) and igniter (12) are formed; It is characterized in that: this burner is fixedly formed by the order suit of an airduct (10), Gas Pipe (11), cool air hose (16), coal pipe (13), secondary air channel (14) and each concentric of tertiary-air pipe (15) of tubulose respectively; The oil gun pipe (3) of tubulose by after be inserted into the port of an airduct (10) forward, and concordant with port, be fixed on the place, axle center of an airduct (10); The tail end of cool air hose (16), an airduct (10) and Gas Pipe (11) is connected with horizontal cool air hose flange (1), a wind flange (1 ') and Gas Pipe inlet flange (4) respectively; Coal pipe (13) is sleeved on cool air hose (16) periphery, and a quarter bend has been rolled at its rear portion, has formed coal pipe inlet flange (5); An airduct (10), Gas Pipe (11), cool air hose (16), coal pipe (13) and secondary air channel (14) are isometrical pipe; Between a Gas Pipe (11) and the airduct (10), flame detector (2) is housed; Between secondary air channel (14) and the coal pipe (13), around coal pipe (13), secondary wind eddy flow impeller (8) is housed, outside secondary air channel (14) tail end, but the secondary windshield plate (6) of the tapering shape of a dish axially-movable is installed, and its side has screw mandrel regulating shaft (19); Tertiary-air pipe (15) first half is tertiary air Taper Pipe (17), and latter half of is isometrical pipe, in isometrical pipe outer race isometrical tertiary air air quantity adjustable pipe (7) is housed, and a side of tertiary air air quantity adjustable pipe (7) has screw mandrel regulating shaft (20); Between tertiary air Taper Pipe (17) and secondary air channel (14), the adjustable eddy flow impeller of tertiary air (9) is installed, its side also is equipped with screw mandrel regulating shaft (18).