CN2534472Y

CN2534472Y - Fine coal powder and natural gas two purpose burner

Info

Publication number: CN2534472Y
Application number: CN 02214059
Authority: CN
Inventors: 姜政华; 山姆·斯切尔; 于建华
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-12
Filing date: 2002-04-12
Publication date: 2003-02-05
Anticipated expiration: 2012-04-12

Abstract

The utility model discloses an fine coal powder and a natural gas dual purpose combustor matching the industrial boiler and the industrial furnace. The utility model is comprises an enclosure (8), a combustion supporting air inlet (1), a rear cover (7), a burner brick (14), an air distribution device (11). A wind regulating damper (2) is arranged on the combustion supporting air inlet (1). A fine coal powder burner (10) is arranged in the enclosure (8). The fine coal powder burner (10) is fixed on the rear cover (7). The fine coal powder burner (10) comprises a fine coal powder inlet header (20). A combustion supporting air inlet head (22) is arranged on the outer side of the fine coal powder inlet head (20). A fine coal powder sprinkling head (21) is arranged on the fine coal powder inlet head (20) on the front end of the fine coal powder burner (10). A fine coal powder inlet (5) and a combustion supporting air inlet (4) are arranged at the rear part of the fine coal powder burner (10), which are individually connected to the fine coal powder inlet head (20) and the combustion supporting air inlet head (22). The rear part of the combustion supporting air inlet head (22) is sealed. The particularity lies in that a nature gas burner (12) is arranged on outer side of the fine coal powder burner (10). The utility model is a fine coal powder and a nature gas dual purpose combustor with replacing fuel, stable and reliable combustion, high combustion efficiency, wide application scope and long service life, which reduces the operation cost.

Description

Meticulous coal dust, natural gas dual burner

(1) technical field

The utility model relates to the boiler combustion technology field, and what be that a kind of boiler uses specifically is the burner of raw material with meticulous coal dust, natural gas.

(2) background technology

Meticulous coal dust is to put thermal coal (raw coal) into container changes into the 9-37 micron grain size with the high pressure draught grounds travel coal dust, the pulverized-coal fired boiler that existing power plant is used, be that coal is worn into 74-297 millimeter coal dust in advance, with air in coal burner is sent into stove, under the burner hearth suspended state, burn, for big Capacity Power Plant Boilers more than the 410T/H, coal-powder boiler almost is present unique combustion system, but every generating plant pulverized coal boiler, all need be equipped with complicated system coal dust equipment and the system of a cover, not only cost is very high, and the operation power consumption is also big, the operating cost height, maintenance load is also big, because of the Industrial Boiler tonnage little, therefore limited the application of coal-powder boiler in Industrial Boiler, add that coal dust only stops about 2 seconds in burner hearth, for making coal dust after-flame in stove, it is very thin that coal dust must grind, and boiler furnace will have the volume of enough burner hearths, coal dust is burning fully, boiler volume is bigger than same capability coal-burning boiler, thereby present Industrial Boiler to be used as coal-powder boiler be inappropriate, in addition, existing boiler is wanted refuelling in combustion process be impossible, thereby the replaceable fuel used of a kind of suitable Industrial Boiler, flameholding is reliable, the efficiency of combustion height, long service life, energy savings, can reduce the meticulous coal dust of boiler cost, the natural gas dual burner was not seen at present.

(3) summary of the invention

The purpose of this utility model is intended to overcome the deficiency of above-mentioned prior art, and the replaceable fuel, the flameholding that provide a kind of suitable Industrial Boiler to use are reliable, efficiency of combustion is high, long service life, energy savings, the meticulous coal dust that can reduce the boiler cost, natural gas dual burner, have mainly solved the problem that existing Industrial Boiler is not suitable for being used as meticulous coal-powder boiler and meticulous coal dust, natural gas dual-purpose stove.

In order to achieve the above object, the utility model is achieved in that meticulous coal dust, the natural gas dual burner, it comprises housing 8, combustion air inlet 1, establish bonnet 7 at the rear portion of housing 8, establish burner block 14 in the front portion of housing 8, air register 11 is established at the middle part of housing 8, establish air register 2 at combustion air 1 position that enters the mouth, establish meticulous coal dust burner 10 in housing 8 inside, meticulous coal dust burner 10 is fixed on the bonnet 7, meticulous coal dust burner 10 comprises meticulous coal powder entrance pipe 20, meticulous coal powder entrance pipe 20 peripheral hardware combustion air inlet tubes 22, on the meticulous coal powder entrance pipe 20 of the front end of meticulous coal dust burner 10, establish meticulous coal dust shower nozzle 21, meticulous coal dust burner 10 afterbodys are established meticulous coal powder entrance 5 and combustion air inlet 4, respectively with meticulous coal powder entrance pipe 20, combustion air inlet tube 22 communicates, the tail seal of combustion air inlet tube 22, and its special character is described meticulous coal dust burner 10 peripheral hardware natural gas burners 12.

To achieve these goals, meticulous coal dust described in the utility model, natural gas dual burner, its natural gas burner 12 comprises pipe 16 in the combustion gas shunting, pipe 16 peripheral hardware combustion gas shunting outer tube 15 in the combustion gas shunting, combustion gas shunting outer tube 15 afterbodys are established gas inlet 3, manage blue 17 on the gas inlet 3, combustion gas shunting outer tube 15 rear ends seal with sealing ring 18, establish gas jet orifice head 19 on the combustion gas shunting outer tube 15, establish gas jet orifice 23 on the gas jet orifice head 19, gas jet orifice 23 is two circles, and angle is arranged, and establishes flame holder 13 on combustion gas shunting outer tube 15.

In order to achieve the above object, meticulous coal dust described in the utility model, natural gas dual burner, its meticulous coal dust shower nozzle 21 adopts spiral nozzle; On combustion gas shunting outer tube 15, establish spiral-flow type air register 9; Establishing wind apparatus 6 on bonnet 7 is slidingly connected with combustion gas isocon 16, and can drive spiral-flow type air register 9 and slide on combustion gas isocon 16; Its flame holder (13) adopts not wide axial blade formula; Its air register (11) adopts Venturi tube.

Meticulous coal dust described in the utility model, natural gas dual burner, compared with the prior art has following good effect: 1, the burner that unites two into one and assemble by meticulous coal dust burner and natural gas burner, meticulous coal dust and natural gas can be pressed arbitrary proportion mixed combustion, meticulous coal dust and natural gas can burn separately again, and can be at burning course of work refuelling, efficiency of combustion height; 2, because air register adopts Venturi tube, not only can reduce the resistance of air, also can utilize its pressure reduction signal to measure the wind speed air quantity, be convenient to air and meticulous coal dust ratio and regulate, realize low oxygen combustion, reduce coefficient of excess air; 3, meticulous coal dust burner adopts spiral nozzle, and secondary wind is rotated strongly, makes that the burner radianting capacity is strong, burning velocity is fast; 4, because burner adopts the fine setting wind apparatus, make secondary wind through the spiral-flow type air register, can change meticulous discharge angle or secondary wind swirl strength, the flame length, the thickness that make are adjustable, can obtain difform torch, make burning reach optimum condition; 5, in the spiral-flow type air register, adopted not wide axial blade formula flame holder, made air current flow even, made flameholding reliable; 6, but long service life, efficiency of combustion high energy savings, operating maintenance maintain simply, can reduce the boiler operatiopn cost, alleviate fireman's labour intensity.

(4) description of drawings

Fig. 1---structural representation of the present utility model;

Fig. 2---the partial enlarged drawing of natural gas burner of the present utility model;

The cut-away view of Fig. 3---Fig. 2;

Fig. 4---the partial enlarged drawing of meticulous coal dust burner of the present utility model;

The cut-away view of Fig. 5---Fig. 4.

(5) specific embodiment

In order to understand better and to implement, provide specific embodiment below in conjunction with accompanying drawing and further specify the meticulous coal dust of the utility model, natural gas dual burner.

Realize example: referring to Fig. 1,2,3,4,5, process housing 8, offer combustion air inlet 1 on the top of housing 8, at the combustion air 1 position fixed installation air register 2 that enters the mouth with foundry goods; Process meticulous coal powder entrance pipe 20, its afterbody central tube is meticulous coal powder entrance 5, fixedly mount meticulous coal dust shower nozzle 21 at its front end, shower nozzle 21 is a spiral nozzle in the meticulous coal dust, at meticulous coal powder entrance pipe 20 peripheral hardware combustion air inlet tubes 22, its tail seal, offer combustion air inlet 4 at combustion air inlet tube 22 afterbodys, form meticulous coal burner 10, pipe 16 in combustion air inlet tube 22 peripheral hardware combustion gas shunting, establish combustion gas shunting outer tube 15 in the combustion gas shunting on the pipe 16, on combustion gas shunting outer tube 15, offer gas inlet 3, gas inlet 3 places fixed installation flange 17, the tail end of combustion gas shunting outer tube 15 seals with sealing ring 18, at combustion gas shunting outer tube 15 front ends gas jet orifice head 19 is installed, offer gas jet orifice 23 on the gas jet orifice head 19, gas jet orifice 23 is two circles, and angle is arranged, shower nozzle position fixed installation flame holder 13 at combustion gas shunting outer tube 15, flame holder 13 adopts not wide axial blade formula, form natural gas burner 12, spiral-flow type air register 9 is slidingly installed on combustion gas shunting outer tube 15, spiral-flow type air register 9 can be shunted on the outer tube 15 in combustion gas and slide, with the meticulous coal dust that assembles, the dual-purpose burner of natural gas is fixedly mounted on the manufactured bonnet 7, fixed installation air distribution device 6 on bonnet 7, and be slidingly connected with combustion gas shunting outer tube 15, can drive spiral-flow type air register 9 slides on combustion gas shunting outer tube 15, bonnet 7 is fixedly mounted on the housing 8, at the middle part of housing 8 fixed installation air register 11, air register 11 adopts Venturi tube, at the front end of housing 8 burner block 14 is installed at last.

When efficient meticulous coal burner described in the utility model is worked, meticulous coal dust or natural gas are imported by interior pipe or combustion gas current divider under a wind with certain pressure drives, at exit and spiral nozzle, gas jet orifice head and combustion air intersect, form rotation materialization stream meticulous coal dust and natural gas driven rotary, secondary wind with certain pressure is through forming the materialization stream of strong rotation behind the rotary air register, meet at exit and meticulous coal dust or natural gas, this flammable mixture with strong rotation of very big centrifugal action, along the Venturi tube air register through the burner block diffusion into the surface, the burning while mixing, form adjustable open and flat shape flame, for making the flame stabilization burning, is furnished with flame holder.

Claims

1, meticulous coal dust, the natural gas dual burner, it comprises housing (8), combustion air inlet (1), establish bonnet (7) at the rear portion of housing (8), establish burner block (14) in the front portion of housing (8), air register (11) is established at the middle part of housing (8), establish air register (2) at combustion air inlet (1) position, establish meticulous coal dust burner (10) in housing (8) inside, meticulous coal dust burner (10) is fixed on the bonnet (7), meticulous coal dust burner (10) comprises meticulous coal powder entrance pipe (20), meticulous coal powder entrance pipe (20) peripheral hardware combustion air inlet tube (22), on the meticulous coal powder entrance pipe (20) of the front end of meticulous coal dust burner (10), establish meticulous coal dust shower nozzle (21), meticulous coal dust burner (10) afterbody is established meticulous coal powder entrance (5) and combustion air inlet (4), respectively with meticulous coal powder entrance pipe (20), combustion air inlet tube (22) communicates, the tail seal of combustion air inlet tube (22) is characterized in that described meticulous coal dust burner (10) peripheral hardware natural gas burner (12).

2, by the described meticulous coal dust of claim 1, the natural gas dual burner, it is characterized in that described natural gas burner (12) comprises pipe (16) in the combustion gas shunting, pipe (16) peripheral hardware combustion gas shunting outer tube (15) in the combustion gas shunting, combustion gas shunting outer tube (15) afterbody is established gas inlet (3), manage orchid (17) on the gas inlet (3), combustion gas shunting outer tube (15) rear end seals with sealing ring (18), establish gas jet orifice head (19) on the combustion gas shunting outer tube (15), establish gas jet orifice (23) on the gas jet orifice head (19), gas jet orifice (23) is two circles, and angle is arranged, on combustion gas shunting outer tube (15), establish flame holder (13).

3,, it is characterized in that establishing spiral-flow type air register (9) on the described combustion gas shunting outer tube (15) by described meticulous coal dust, the natural gas dual burner of claim 2.

4,, it is characterized in that described meticulous coal dust shower nozzle (21) adopts spiral nozzle by described meticulous coal dust, the natural gas dual burner of claim 1 or 2 or 3.

5, press claim 1 or 2 or 3 described meticulous coal dusts, natural gas dual burner, it is characterized in that upward establishing wind apparatus (6) of described bonnet (7), be slidingly connected with combustion gas shunting outer tube (15), and can drive spiral-flow type air register (9) in upward slip of combustion gas shunting outer tube (15).

6, by the described meticulous coal dust of claim 4, natural gas dual burner, it is characterized in that upward establishing wind apparatus (6) of described bonnet (7), be slidingly connected with combustion gas shunting outer tube (15), and can drive spiral-flow type air register (9) in upward slip of combustion gas shunting outer tube (15).

7,, it is characterized in that described flame holder (13) adopts not wide axial blade formula by the described meticulous coal dust of claim 2, natural gas dual burner.

8,, it is characterized in that described air register (11) adopts Venturi tube by the described meticulous coal dust of claim 1, natural gas dual burner.