CN201306716Y

CN201306716Y - Coke-oven gas ignition burner

Info

Publication number: CN201306716Y
Application number: CNU2008201543471U
Authority: CN
Inventors: 邱志勇
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2008-10-22
Filing date: 2008-10-22
Publication date: 2009-09-09
Anticipated expiration: 2018-10-22

Abstract

The utility model discloses a coke-oven gas ignition burner which comprises a gas pipeline, a combustion nozzle, an inflamer outer-tube, a combustion stabilization cylinder, a primary air flow regulating cylinder and an electronic igniter. An ignition ejector nozzle is arranged at the front end of the gas pipeline; the combustion nozzle taking the shape of a circular cone is welded at the head of the gas pipeline; the gas pipeline is sleeved in the inflamer outer-tube; a plurality of air throughflow holes are formed on a tube body of the inflamer outer-tube; a plurality of evenly distributed secondary air uniform flow holes are formed on the combustion stabilization cylinder fixed on the inflamer outer-tube through a bolt; the inflamer outer-tube is sleeved in the primary air flow regulating cylinder; the primary air flow regulating cylinder is provided with an adjusting handle, and a plurality of primary air regulating ports corresponding to the air throughflow holes on the inflamer outer-tube are formed on the primary air flow regulating cylinder; and an ignition electrode of the electronic igniter is positioned above the ignition ejector nozzle of the gas pipeline. The coke-oven gas ignition burner can fully utilizes various gases in an iron work during the smelting manufacturing process, thereby reducing the exhaust to atmosphere.

Description

The coke-stove gas start-up burner

Technical field

The utility model relates to coke-stove gas start-up burner in a kind of industrial combustion boiler, particularly a kind of coke-stove gas start-up burner that makes low-heat value gas smooth combustion.

Background technology

At present, in coking by coke oven, blast furnace ironmaking and the pneumatic steelmaking production process of each iron and steel metallurgy enterprise, can produce coke-stove gas, blast furnace gas and coal gas of converter, along with the expansion of iron and steel enterprise's scale and the raising of production capacity, the coal gas amount that steel smelting procedure produces is more and more.Because the combustion heat value of various coal gas height is different, its combustion characteristics exists than big-difference.Coke-stove gas calorific value height can independent smooth combustion.Converter and blast furnace gas are owing to be subjected to the influence of smelting technique and manufacturing condition, its calorific value is low, and exist the fluctuation unstable situation, low-heat value gas can not direct-fire and independent smooth combustion, need light a fire and mix a certain proportion of high heating value gas with high heating value gas could smooth combustion, otherwise low-heat value gas causes energy waste and environmental pollution because the instability of burning can only reduce use amount or directly diffuses to atmosphere.

How to realize the combustion stability of low-heat value gas; reduce the mixed combustion ratio of high heating value gas; optimize the economy of boiler gas consumption structure; improve the quantity combusted of low-heat value gas; reduce the amount of diffusing of low-heat value gas; protecting atmospheric environment, is one of key issue that need solve in the combustion technology of industrial combustion gas boiler now.

The measure that improves low-heat value gas combustion stability now mainly contains two kinds of methods: the one, light a fire with the natural gas or the coke-stove gas of high heating value, and mix to come smooth combustion with high heating value gas and low-heat value gas; The 2nd, low-calorie coal gas is carried out preheating improve its stability with pressurization.The former will guarantee the stability of burning, the requirement of natural gas or coke-stove gas is bigger, the latter need increase low-heat value gas preheating and pressurized equipment, the expense that drops into is bigger, and needs increase the consumption of electric energy, cause the production run cost to rise, in the industrial combustion boiler of iron and steel enterprise, promote the use of and have certain difficulty.

Summary of the invention

For addressing the above problem, the utility model provides a kind of coke-stove gas start-up burner, reaches to reduce the high heating value gas ratio, improves the purpose of the stability of boiler combustion.

For achieving the above object, coke-stove gas start-up burner of the present utility model, comprise: Gas Pipe 10, burner 20, burner outer tube 30, steady combustion tube 40, primary air flow are regulated tube 50 and ignition 60, and the front end of described Gas Pipe 10 is provided with igniting spout 11; Described burner 20 is conical, and it is welded on the head of described Gas Pipe 10, and described burner 20 is provided with a plurality of spouts 21; Described burner outer tube 30 is enclosed within on the described Gas Pipe 10, described burner outer tube 30 pipe shafts are provided with a plurality of air through flow holes 31, the pipe Inner Front End is provided with fixed mount 32, the rear end of described burner outer tube 30 is welded with adpting flange 70, and described Gas Pipe 10 is fixed on described fixed mount 32 and the adpting flange 70; Described steady combustion tube 40 is provided with the equal discharge orifice 41 of a plurality of equally distributed auxiliary airs, and described steady combustion tins 40 is fixed on the described burner outer tube 30 by bolt 42; Described primary air flow is regulated tube 50 and is enclosed within on the described burner outer tube 30, and it is provided with air through flow hole 31 corresponding primary air adjustment holes 51 on regulating handle 52 and a plurality of and described burner outer tube 30; Described ignition 60 is positioned at described burner outer tube 30, and it is fixed on described fixed mount 32 and the adpting flange 70, and its ignitor 61 is positioned at the top of the igniting spout 11 of described Gas Pipe 10.

A plurality of spouts 21 on the described burner 20 are evenly arranged on two concentric circles, and the axis of each spout has an identical anglec of rotation with the circular cone normal of this spout position.

Have a plurality of V-notch 43 on the outlet circumference of described steady combustion tube 40.

Described regulating handle 52 can be located on adpting flange 70 by bolt 53.

Coke-stove gas start-up burner of the present utility model is strengthened the mutual disturbance of combustion gas and air, has improved combustion gas and Air mixing ability, and the high heating value gas ratio of adding is reduced, and has improved the stability of boiler combustion.Coke-stove gas start-up burner of the present utility model is making full use of the various coal gas of steel plant in the smelting production process, reduce the use amount of high heating value gas, improve the use amount of low-heat value gas, optimize the economy of boiler gas consumption structure, reduced discharging simultaneously, helped better to reach the target of energy-saving and emission-reduction atmosphere.

Description of drawings

Fig. 1 is the structural representation of coke-stove gas start-up burner of the present utility model;

Fig. 2 is the left view of stabilizer among Fig. 1;

Fig. 3 is that the A-A of coke-stove gas start-up burner among Fig. 1 is to cutaway view;

Fig. 4 is that the B-B of coke-stove gas start-up burner among Fig. 1 is to cutaway view;

Fig. 5 looks enlarged diagram for the left side of burner among Fig. 1.

The specific embodiment

Fig. 1 is the structural representation of coke-stove gas start-up burner of the present utility model, and Fig. 2 is the left view of stabilizer among Fig. 1, Fig. 3 be the A-A of coke-stove gas start-up burner among Fig. 1 to cutaway view, Fig. 4 is that the B-B of coke-stove gas start-up burner among Fig. 1 is to cutaway view.Shown in Fig. 1～4, coke-stove gas start-up burner of the present utility model comprises: Gas Pipe 10, burner 20, burner outer tube 30, steady combustion tube 40, primary air flow are regulated tube 50 and ignition 60.

Gas Pipe 10 front ends are provided with igniting spout 11.Gas Pipe 10 is used to import coke-stove gas.

Burner 20 is conical, and it is welded on the head of described Gas Pipe 10, and burner 20 is provided with a plurality of spouts 21.

Burner outer tube 30 is enclosed within on the described Gas Pipe 10, described burner outer tube 30 pipe shafts are provided with a plurality of air through flow holes 31, the pipe Inner Front End is provided with fixed mount 32, the rear end of described burner outer tube 30 is welded with adpting flange 70, and described Gas Pipe 10 is fixed on described fixed mount 32 and the adpting flange 70.Adpting flange 70 is fixed on coke-stove gas start-up burner of the present utility model on the furnace wall support (not shown) of boiler.

Steady combustion tube 40 is fixed on the described burner outer tube 30 by bolt 42, and it is provided with the equal discharge orifice 41 of a plurality of equally distributed auxiliary airs.Steady combustion tube 40 has the high-temperature flue gas of crowding around effect, keeps the higher temperature in this zone, strengthens the stability of fuel gas with low heat value burning.Having a plurality of V-notch 43 on the outlet circumference of steady combustion tube 40, is to be out of shape for fear of being washed away by thermal-flame to burn out with thermal expansion.

The primary air flow is regulated tube 50 and is enclosed within on the described burner outer tube 30, it is provided with air through flow hole 31 corresponding primary air adjustment holes 51 on regulating handle 52 and a plurality of and described burner outer tube 30, and described regulating handle 52 can be located on adpting flange 70 by bolt 53.By rotate regulating handle 52 can primary air adjustment hole 51 and described burner outer tube 30 on the flow area of air through flow hole 31, thereby regulate the primary air flow.

Ignition 60 is positioned at described burner outer tube 30, and it is fixed on described fixed mount 32 and the adpting flange 70, and its ignitor 61 is positioned at the top of the igniting spout 11 of described Gas Pipe 10.

Coke-stove gas start-up burner of the present utility model in use, the air that the outside enters divides two parts to enter, part air through flow hole 31 on primary air adjustment hole 51 and described burner outer tube 30 enters in the burner outer tube 30, uses for 11 burnings of igniting spout; Another part is in the equal discharge orifice 41 of auxiliary air enters steady combustion tube 40, for burner 20 fuel gas burings.

Coke-stove gas enters from Gas Pipe 10, and a part is through 11 ejections of igniting spout, and by the spark ignition that ignition 60 starting ignition electrodes 61 produce, another part is met the flame combustion that igniting spout 11 is lighted through burner 20 ejections.The starting of ignition 60 starts and is controlled automatically by the external electrical device duration of ignition.

Fig. 5 looks enlarged diagram for the left side of burner among Fig. 1.As shown in the figure, a plurality of spouts 21 on the described burner 20 are evenly arranged on two concentric circles, and spout 21 diameters of inner ring and outer ring can be different, and the axis of each spout has an identical anglec of rotation with the circular cone normal of this spout position.Like this, the coke-stove gas that burner 20 is sprayed forms swirling eddy, promptly be the swirling flow shape, intersect with the air and the low-heat value gas of direct current, have the effect of entrainmenting surrounding air and other low-heat value gas, strengthen the mixing uniformity of various gas gases, shorten the burning time of fuel, combustion flame is short, and stability is strong; Because coal gas sprays from burner 20 with the form of rotating jet, spout 21 air velocities improve, and pressure reduction rises, and under the prerequisite that guarantees burner spout 21 pressure, the high heating value gas flow that needs can descend.

Claims

1, a kind of coke-stove gas start-up burner is characterized in that, comprising: Gas Pipe (10), burner (20), burner outer tube (30), steady combustion tube (40), primary air flow are regulated tube (50) and ignition (60),

The front end of described Gas Pipe (10) is provided with igniting spout (11);

Described burner (20) is conical, and it is welded on the head of described Gas Pipe (10), and described burner (20) is provided with a plurality of spouts (21);

Described burner outer tube (30) is enclosed within on the described Gas Pipe (10), described burner outer tube (30) pipe shaft is provided with a plurality of air through flow holes (31), the pipe Inner Front End is provided with fixed mount (32), the rear end of described burner outer tube (30) is welded with adpting flange (70), and described Gas Pipe (10) is fixed on described fixed mount (32) and the adpting flange (70);

Described steady combustion tube (40) is provided with the equal discharge orifices of a plurality of equally distributed auxiliary airs (41), and described steady combustion tube (40) is fixed on the described burner outer tube (30) by bolt (42);

Described primary air flow is regulated tube (50) and is enclosed within on the described burner outer tube (30), and it is provided with regulating handle (52) and a plurality of and described burner outer tube (30) is gone up the corresponding primary air adjustment hole of air through flow hole (31) (51);

Described ignition (60) is positioned at described burner outer tube (30), and it is fixed on described fixed mount (32) and the adpting flange (70), and its ignitor (61) is positioned at the top of the igniting spout (11) of described Gas Pipe (10).

2, coke-stove gas start-up burner as claimed in claim 1, it is characterized in that, a plurality of spouts (21) on the described burner (20) are evenly arranged on two concentric circles, and the axis of each spout has an identical anglec of rotation with the circular cone normal of this spout position.

3, coke-stove gas start-up burner as claimed in claim 1 is characterized in that, has a plurality of V-notch (43) on the outlet circumference of described steady combustion tube (40).

4, coke-stove gas start-up burner as claimed in claim 1 is characterized in that, described regulating handle (52) can pass through bolt (53) and go up the location at adpting flange (70).