CN215831910U - Low-nitrogen burner for burning low-heat value waste gas - Google Patents
Low-nitrogen burner for burning low-heat value waste gas Download PDFInfo
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- CN215831910U CN215831910U CN202121910222.9U CN202121910222U CN215831910U CN 215831910 U CN215831910 U CN 215831910U CN 202121910222 U CN202121910222 U CN 202121910222U CN 215831910 U CN215831910 U CN 215831910U
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Abstract
Aiming at the problems of untimely ignition, insufficient combustion, overproof tail gas emission and the like of the conventional low-heat-value waste gas burner, the utility model provides a low-nitrogen burner for combusting low-heat-value waste gas, which consists of an ignition gun (1), a waste gas inlet pipe (2), a primary air box (3), a secondary air box (4), swirl vanes (5), a tertiary air box (6), a heat storage ring (7) and a stable combustion cone (8); the burner effectively inhibits the generation of nitrogen oxides through measures such as staged combustion, adjustment of the amount of the back-burned flue gas, control of the temperature level of a combustion area and the like, and meanwhile, a stable ignition area and a stable temperature interval are formed after the heat storage ring is heated, so that timely ignition and stable combustion of waste gas are ensured.
Description
Technical Field
The utility model belongs to combustion equipment, and particularly relates to a low-nitrogen combustor for combusting low-heat-value waste gas.
Background
In the production process of the industries such as metallurgy, petrochemical industry, coal chemical industry, coal power and the like in China, various low-heat-value waste gases such as blast furnace gas, coke oven gas, refining waste gas, carbon black tail gas and the like can be generated, and along with the continuous improvement of the national energy-saving and environment-friendly standards, most of burners for burning the low-heat-value waste gases have the problems of untimely ignition, insufficient combustion, over-standard tail gas emission and the like.
Disclosure of Invention
The utility model aims to design and manufacture a low-nitrogen burner for burning low-heat value waste gas, so that the industrial low-heat value waste gas is fully combusted, and tail gas reaches the standard and is discharged, thereby saving energy of enterprises, reducing cost and achieving the aim of protecting the environment.
The utility model is realized by the following steps: the low-nitrogen burner for burning the low-heat-value waste gas consists of an ignition gun (1), a waste gas inlet pipe (2), a primary air box (3), a secondary air box (4), swirl vanes (5), a tertiary air box (6), a heat storage ring (7) and a stable combustion cone (8). Waste gas intake pipe (2) are arranged at combustor central point and are put, one-level bellows (3) have been arranged in proper order in the outside, second grade bellows (4) and tertiary bellows (6), burning torch (1) level is arranged in one-level bellows (3), swirl vane (5) are arranged between waste gas intake pipe (2) and one-level bellows (3), heat accumulation ring (7) are located one-level bellows (3) export, waste gas ignition position, surely fire cone (8) and arrange in heat accumulation ring (7) outside.
The ignition gun (1) adopts a high-energy ignition gun.
The waste gas inlet pipe (2) is made of seamless steel pipes, the periphery of the outlet end is provided with 3 waste gas outlet openings, and the diameter of the waste gas outlet openings is phi 6-phi 12.
The primary air box (3) is of a circular tube structure and axially supplies air.
The secondary air box (4) is of a circular tube structure and forms an annular air duct together with the primary air box.
The swirl vanes (5) are adjustable vanes, the number of the vanes is 8-16, and the angle of the vanes is 0-90 degrees.
The tertiary air box (6) is of a circular tube structure and axially supplies air.
The heat storage ring (7) is of a circular ring necking structure and is made of a fireproof heat storage material.
The stable combustion cone (8) is of a circular ring type flaring structure, rectangular ventilation grooves are uniformly distributed on the periphery of the cone, and the expansion angle is 30-45 degrees.
The working principle of the utility model is as follows: low heat value waste gas passes through the waste gas intake pipe and gets into the combustor, and waste gas passes through the burning torch ignition burning, and the required air of burning is sent into through one, two, tertiary bellows in grades, is connected with the back fire flue gas on the tertiary bellows, through hierarchical burning and the formation that can effectively restrain nitrogen oxide of adjusting back fire flue gas volume, forms stable regional and the temperature interval of catching fire after the heat accumulation ring heating, can guarantee in time catching fire and the stable burning of waste gas.
The utility model has the technical effects that: because the ignition area is provided with the heat storage ring, a stable ignition area can be formed, the temperature level of a combustion center is controlled, waste gas is ignited in time and is stably combusted, the first-stage air box can adjust the rotational flow strength by adjusting the angle of the rotational flow blades, hot air of the second-stage air box is controlled to be mixed into the combustion in time, the amount of the back-fire smoke in the third-stage air box is adjusted, and the generation of oxygen and nitrogen oxides can be effectively controlled by staged combustion and adjustment of the amount of the back-fire smoke.
Drawings
FIG. 1 is a schematic view of a low-nitrogen burner for burning low-heat value waste gas
1. Ignition gun 2, waste gas inlet pipe 3, primary air box 4 and secondary air box
5. The device comprises swirl vanes 6, a three-stage air box 7, a heat accumulation ring 8 and a stable combustion cone.
Detailed Description
The utility model will be further described with reference to the accompanying drawings in which: a waste gas inlet pipe (2) is arranged at the center of a burner, and a primary air box (3), a secondary air box (4) and a tertiary air box (6) are sequentially arranged on the outer side of the burner; the ignition gun (1) is horizontally arranged in the primary air box (3), and the ignition head is positioned in a small hole area of a waste gas outlet; the swirl vanes (5) are arranged between the waste gas inlet pipe (2) and the annular channel of the primary air box (3) and are used for adjusting the strength of swirl; the heat storage ring (7) is positioned at the outlet of the primary air box (3) and in a waste gas ignition area and is used for maintaining stable ignition temperature; the combustion stabilizing cone (8) is arranged on the outer side of the heat storage ring (7) and is used for adjusting the mixing and combustion stabilizing of the secondary air box and the primary air flue gas; all the air boxes are provided with air doors, and the air quantity and the smoke quantity can be adjusted.
The working procedures of the utility model are as follows: the low-heat value combustible waste gas enters the combustor through the air inlet pipe, the waste gas is sprayed out through the small holes at the outlet end, the waste gas is ignited by the ignition gun and then combusted, the air distribution quantity of the primary air box and the angle of the swirl blades are adjusted according to the size of the combustible waste gas, after the temperature of the heat storage ring area is stable, the waste gas quantity and the air distribution quantity are gradually increased, the stable combustion of the combustor is realized by adjusting the air quantity of the air boxes at all levels and the back-fire smoke gas quantity, and the nitrogen oxide is discharged after reaching the standard.
It should be noted that the above-mentioned embodiments enable one skilled in the art to more fully understand the present invention, and that modifications and equivalents can be made by those skilled in the art; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and within the scope thereof.
Claims (3)
1. The utility model provides a low nitrogen combustor of burning low heat value waste gas, comprises burning torch (1), waste gas intake pipe (2), one-level bellows (3), second grade bellows (4), whirl blade (5), tertiary bellows (6), heat accumulation ring (7), surely fire cone (8), its characterized in that: waste gas intake pipe (2) are arranged at combustor central point and are put, one-level bellows (3) have been arranged in proper order in the outside, second grade bellows (4) and tertiary bellows (6), burning torch (1) level is arranged in one-level bellows (3), swirl vane (5) are arranged between waste gas intake pipe (2) and one-level bellows (3), heat accumulation ring (7) are located one-level bellows (3) export, waste gas ignition position, surely fire cone (8) and arrange in heat accumulation ring (7) outside.
2. A low-nitrogen burner for combusting low-heating-value exhaust gases according to claim 1, characterized in that the heat accumulation ring (7) is of a circular ring-shaped necking structure and is made of a refractory heat accumulation material.
3. The low-nitrogen burner for burning the low-calorific-value waste gas as claimed in claim 2, wherein the combustion stabilizing cone (8) is of a circular flaring structure, rectangular ventilation grooves are uniformly distributed around the cone, and the expansion angle is 30-45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121910222.9U CN215831910U (en) | 2021-08-11 | 2021-08-11 | Low-nitrogen burner for burning low-heat value waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121910222.9U CN215831910U (en) | 2021-08-11 | 2021-08-11 | Low-nitrogen burner for burning low-heat value waste gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215831910U true CN215831910U (en) | 2022-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121910222.9U Active CN215831910U (en) | 2021-08-11 | 2021-08-11 | Low-nitrogen burner for burning low-heat value waste gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215831910U (en) |
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2021
- 2021-08-11 CN CN202121910222.9U patent/CN215831910U/en active Active
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