CN113503538A - Carbon black tail gas low-nitrogen combustor and using method thereof - Google Patents
Carbon black tail gas low-nitrogen combustor and using method thereof Download PDFInfo
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- CN113503538A CN113503538A CN202110840738.9A CN202110840738A CN113503538A CN 113503538 A CN113503538 A CN 113503538A CN 202110840738 A CN202110840738 A CN 202110840738A CN 113503538 A CN113503538 A CN 113503538A
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- tail gas
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- black tail
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/60—Devices for simultaneous control of gas and combustion air
Abstract
The invention relates to a carbon black tail gas low-nitrogen combustor and a using method thereof, and the combustor comprises a combustor body, wherein one end of the combustor body is provided with an inner flame tube and an outer flame tube, the inner flame tube is arranged in the outer flame tube, and a cavity between the outer flame tube and the inner flame tube forms an outer flame cavity; the other end of the burner body is a tail end; an ignition fuel channel is arranged in the burner body, one end of the ignition fuel channel is fixed in the inner flame tube, and the other end of the ignition fuel channel penetrates out of and is fixed at the tail end of the burner body; an electronic ignition gun assembly penetrates through the ignition fuel channel, two ends of the electronic ignition gun assembly respectively penetrate out of the ignition fuel channel, one end of the electronic ignition gun assembly is arranged in the inner flame tube, and an ignition electrode is arranged at one end of the tail end of the burner body; through the scheme of the invention, the emission value of nitrogen oxides in the flue gas can be effectively reduced, and compared with the existing combustor and the method thereof, the invention is more environment-friendly and has great market application and popularization values.
Description
Technical Field
The invention relates to a carbon black tail gas low-nitrogen combustor and a using method thereof, and belongs to the technical field of combustor design.
Background
The carbon black tail gas has higher combustion value, and the carbon black tail gas low-nitrogen combustor in the existing market can only ensure that the emission value of nitrogen oxides in the flue gas is controlled to 300-400 mg/m3Among the converted values, the emission value of the nitrogen oxides is relatively high, and the atmospheric environment is seriously influenced, so that people need to further reduce the emission value of the nitrogen oxides in the smoke.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a carbon black tail gas low-nitrogen combustor and a using method thereof, which can effectively reduce the emission value of nitrogen oxides in flue gas.
The invention aims to realize the low-nitrogen burner of the carbon black tail gas by the following technical scheme, which comprises a burner body and is characterized in that one end of the burner body is provided with an inner flame tube and an outer flame tube, the inner flame tube is arranged in the outer flame tube, and a cavity between the outer flame tube and the inner flame tube forms an outer flame cavity; the other end of the burner body is a tail end;
an ignition fuel channel is arranged in the burner body, one end of the ignition fuel channel is fixed in the inner flame tube, and the other end of the ignition fuel channel penetrates out of and is fixed at the tail end of the burner body; an ignition fuel ignition gun assembly penetrates through the ignition fuel channel, two ends of the ignition fuel ignition gun assembly respectively penetrate through the ignition fuel channel, one end of the ignition fuel ignition gun assembly is arranged in the inner flame tube, an ignition electrode connector is arranged at one end, located at the tail end of the combustor body, of the ignition fuel ignition gun assembly, and an ignition electrode is arranged at one end, located in the inner flame tube, of the ignition fuel ignition gun assembly;
the combustor body is also provided with an air channel, a mixing box and a circulating flue gas channel, and the air channel and the circulating flue gas channel are communicated with the mixing box; a gas diffusion disc and an air diffusion disc are arranged in the inner flame tube, and the air channel penetrates out of the mixing box and then is communicated with the gas diffusion disc and the air diffusion disc;
the burner body is also provided with an ignition fuel air channel and an ignition system outer sleeve, the ignition fuel air channel is communicated with the ignition system outer sleeve, one end of the ignition system outer sleeve is communicated with the ignition fuel air channel, and the other end of the ignition system outer sleeve is arranged in the inner flame tube;
the combustor body is also provided with a high-pressure air channel and an ethylene tar channel, the high-pressure air channel and the ethylene tar channel extend to the inner flame tube through the ethylene tar gun assembly, the front end of the ethylene tar gun assembly is provided with an ethylene tar gun oil nozzle, and the high-pressure air channel and the ethylene tar channel are communicated with the ethylene tar gun oil nozzle;
the combustor body is also provided with a carbon black tail gas central channel and a carbon black tail gas central channel nozzle, the carbon black tail gas central channel nozzle is arranged in the inner flame tube, and the carbon black tail gas central channel is communicated with the carbon black tail gas central channel nozzle;
the combustor body is also provided with a carbon black tail gas main channel and a carbon black tail gas main fuel spray pipe, the carbon black tail gas main fuel spray pipe is arranged in the outer flame pipe, and the carbon black tail gas main channel is communicated with the carbon black tail gas main fuel spray pipe;
the burner body is also provided with a carbon black tail gas low-nitrogen burner mounting plate for mounting the carbon black tail gas low-nitrogen burner on a hot blast stove of a carbon black tail gas production line.
The burner body is also provided with a fire observation tube, one end of the fire observation tube extends into the inner flame tube, the other end of the fire observation tube is provided with fire observation hole glass, and the fire observation hole glass is arranged at the end part of the fire observation tube through a fire observation hole flange; one end side edge of the fire observation pipe close to the fire observation hole glass is connected with a fire observation pipe cooling air channel, and the fire observation pipe cooling air channel is communicated with the fire observation pipe.
A high-pressure air valve is arranged on the high-pressure air channel;
an ethylene tar valve is arranged on the ethylene tar channel;
a carbon black tail gas main channel valve is arranged on the carbon black tail gas main channel;
an air valve of an ignition gun is arranged on the fire fuel air channel;
an ignition fuel ignition valve is arranged on the ignition fuel channel;
a carbon black tail gas central channel valve is arranged on the carbon black tail gas central channel;
and a valve of the main carbon black tail gas channel is arranged on the main carbon black tail gas channel.
An ignition gun bracket is arranged in the inner flame tube, and a high-pressure air channel, an ethylene tar channel, an ignition fuel channel and an ethylene tar oil gun oil nozzle are arranged on the ignition gun bracket;
an inner flame tube supporting tube is arranged on the burner body, and the inner flame tube is installed and fixed on the inner flame tube supporting tube.
The combustor body is provided with a lifting hook which is convenient for lifting the whole combustor.
The tail end of the combustor body is provided with a first flange and a second flange, and the ignition fuel channel, the high-pressure air channel and the ethylene tar channel penetrate out of the first flange and the second flange.
A use method of a carbon black tail gas low-nitrogen combustor is characterized by comprising the following steps:
step 1), mounting a carbon black tail gas low-nitrogen burner mounting plate on a carbon black tail gas production line hot blast stove, and placing an inner flame pipe and an outer flame pipe at one end of a burner body in a hearth of the carbon black tail gas production line hot blast stove;
step 2), connecting an air blower outside the air channel, starting the air blower, and enabling air to enter from the air channel and to exit from the gas diffusion disc and the air diffusion disc to enter the hearth;
step 3), opening an air valve of the ignition gun, and enabling air to enter from an ignition fuel air channel and to exit from an outer sleeve of the ignition system to enter a hearth;
step 4), feeding an ignition transformer, connecting an ignition electrode joint by a high-voltage wire, and generating electric sparks at the ignition electrode;
step 5), starting an ignition fuel ignition valve, wherein ignition fuel enters from an ignition fuel channel and is ignited by electric sparks generated by an electronic ignition gun assembly, and ignition flame is combusted in a hearth;
step 6), after the ignition is confirmed, turning off the electronic ignition;
step 7), opening an ethylene tar valve and a high-pressure air valve, wherein ethylene tar enters from an ethylene tar passage, high-pressure air enters from the high-pressure air passage, and the ethylene tar and the high-pressure air are atomized and sprayed out from an oil nozzle of an ethylene tar oil gun through an ethylene tar oil gun assembly and then are ignited by flame of ignition fuel of the ignition fuel gun assembly; burning ethylene tar flame in a hearth till the furnace temperature is over 800 ℃;
step 8), opening a valve of a carbon black tail gas central channel, allowing the carbon black tail gas to enter from the carbon black tail gas central channel and be sprayed out from a nozzle of the carbon black tail gas central channel, and igniting the carbon black tail gas of the central channel by flame of ethylene tar to burn in a hearth;
opening a valve of a main channel of the carbon black tail gas, allowing the carbon black tail gas to enter from the main channel of the carbon black tail gas, and spraying from a main fuel spray pipe of the carbon black tail gas to be ignited and combusted in a hearth;
the flame generated by the central nozzle of the carbon black tail gas contacts with the air from the gas diffusion disc and the air diffusion disc to support combustion, the air is sufficient, the combustion is concentrated oxygen combustion, the temperature of the combustion flame is high, the surplus air is diffused outwards, the combustion is continuously supported by the fuel of the main fuel spray pipe of the carbon black tail gas, and the air amount is reduced and the combustion is light oxygen combustion;
the concentration of nitrogen oxides in carbon black tail gas combustion smoke is reduced from 900-1100 mg/m3 to 300-400 mg/m3 during ordinary combustion through thick and light combustion of the carbon black tail gas;
step 9), closing the ethylene tar valve and the high-pressure air valve;
step 10), adjusting the burning of the carbon black tail gas low-nitrogen combustor to normal working condition load according to production requirements;
step 11), detecting the content of the flue gas, recording the contents of O2 and NO, paying attention to the content of CO, and adjusting the proportion of air and carbon black tail gas to ensure that the fuel is fully combusted;
step 12), communicating the flue gas generated in the hearth with a circulating flue gas channel through a pipeline; a smoke external circulation pipeline valve is arranged on the circulation smoke channel, the smoke external circulation pipeline valve is opened, part of smoke generated in the hearth enters from the circulation smoke channel, is mixed with air entering from the air channel in a mixing box, and then enters a flame field from the gas diffusion disc and the air diffusion disc;
therefore, part of flue gas generated by combustion is reintroduced into the combustion area, the flow rate of flue gas circulation is adjusted, and the concentration of nitrogen oxides in the flue gas is reduced to the minimum under the condition that the combustor is fully combusted and the working condition is met, wherein the nitrogen oxides in the flue gas can be basically controlled to be below 100mg/m 3.
The burner body is provided with a fire observation tube, one end of the fire observation tube extends into the inner flame tube, the other end of the fire observation tube is provided with fire observation hole glass, the fire observation hole glass is arranged at the end part of the fire observation tube through a fire observation hole flange, and the combustion condition in the hearth can be observed through the fire observation hole glass and the fire observation tube;
the one end side that the fire observation pipe is close to the glass of fire observation hole is connected with and sees firetube cooling air passageway, sees firetube cooling air passageway and sees the firetube to link up, during the use, blows in the fire observation pipe through seeing the firetube cooling air passageway with external cooling air, effectively avoids burning heat in the furnace chamber to flow back to the glass of fire observation hole through seeing the firetube and causes the damage of seeing firehole glass, plays the effect that reduces the pipe temperature of seeing the firetube of seeing firehole glass one end.
The method is advanced and scientific, and compared with the prior art, the carbon black tail gas low-nitrogen combustor in the current market can ensure that the emission value of nitrogen oxides in flue gas is controlled to be 300-400 mg/m3 (reduced value), while the emission value of the nitrogen oxides in the carbon black tail gas low-nitrogen combustor through the scheme of the invention is controlled to be below 100mg/m3 (reduced value), which belongs to the best level at home at present, so that the emission value of the nitrogen oxides in the flue gas is effectively reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the left side of FIG. 1;
FIG. 3 is a schematic diagram of the right side structure of FIG. 1;
in the figure: 1 ethylene tar oil gun nozzle, 2 ignition electrode, 3 inner flame tube, 4 gas diffusion disk, 5 carbon black tail gas central channel nozzle, 6 air diffusion disk, 7 carbon black tail gas main fuel spray pipe, 8 outer flame tube, 9 ignition electrode, 10 carbon black tail gas low nitrogen burner mounting plate, 11 ignition gun bracket, 12 flame tube support tube, 13 lifting hook, 14 carbon black tail gas main channel, 20 fire observation tube, 22 fire observation tube cooling air channel, 23 fire observation hole glass, 24 fire observation hole flange, 25 first flange, 26 second flange, 27 high pressure air channel, 28 ethylene tar channel, 29 ignition electrode, 30 ignition fuel channel, 31 ignition system outer sleeve, 32 ignition fuel air channel, 33 carbon black tail gas central channel, 35 mixing box, 36 air channel, 37 circulating smoke channel, 38 ignition fuel gun assembly and 39 ethylene tar oil gun assembly.
Detailed Description
The invention is further explained in the following with reference to the drawings and the description of the drawings.
A carbon black tail gas low-nitrogen combustor comprises a combustor body, wherein one end of the combustor body is provided with an inner flame tube 3 and an outer flame tube 8, the inner flame tube 3 is arranged in the outer flame tube 8, and a cavity between the outer flame tube 8 and the inner flame tube 3 forms an outer flame cavity; the other end of the burner body is a tail end.
An ignition fuel channel 30 is arranged in the burner body, one end of the ignition fuel channel 30 is fixed in the inner flame tube 3, and the other end of the ignition fuel channel 30 penetrates out and is fixed at the tail end of the burner body; an ignition fuel ignition gun assembly 38 penetrates through the ignition fuel channel 30, two ends of the ignition fuel ignition gun assembly 38 respectively penetrate through the ignition fuel channel 30, one end of an ignition electrode 2 is arranged in the inner flame tube 3, and an ignition electrode connector 29 is arranged at one end of the tail end of the burner body.
The burner body is also provided with an air channel 36, a mixing box 35 and a circulating flue gas channel 37, and the air channel 36 and the circulating flue gas channel 37 are communicated with the mixing box 35; the inner flame tube 3 is internally provided with a gas diffusion disc 4 and an air diffusion disc 6, and the air channel 36 penetrates out of the mixing box 35 and then is communicated with the gas diffusion disc 4 and the air diffusion disc 6.
The burner body is also provided with an ignition fuel air channel 32 and an ignition system outer sleeve 31, the ignition fuel air channel 32 is communicated with the ignition system outer sleeve 31, one end of the ignition system outer sleeve 31 is communicated with the ignition fuel air channel 32, and the other end is arranged in the inner flame tube 3.
The burner body is also provided with a high-pressure air channel 27 and an ethylene tar channel 28, the high-pressure air channel 27 and the ethylene tar channel 28 extend to the inner flame tube 3, the inner flame tube 3 is internally provided with an ethylene tar gun oil nozzle 1, and the high-pressure air channel 27 and the ethylene tar channel 28 are communicated with the ethylene tar gun oil nozzle 1.
Still set up carbon black tail gas central channel 33, carbon black tail gas central channel spout 5 on the combustor body, carbon black tail gas central channel spout 5 is installed in interior flame tube 3, and carbon black tail gas central channel 33 link up with carbon black tail gas central channel spout 5.
Still set up carbon black tail gas main entrance 14, carbon black tail gas main fuel spray tube 7 on the combustor body, carbon black tail gas main fuel spray tube 7 is installed in outer flame tube 8, and carbon black tail gas main entrance 14 link up with carbon black tail gas main fuel spray tube 7.
Still set up on the combustor body and be used for installing carbon black tail gas low-nitrogen burner in the carbon black tail gas low-nitrogen burner mounting panel 10 on dress carbon black tail gas production line hot-blast furnace.
The burner body is also provided with a fire observation tube 20, one end of the fire observation tube 20 extends into the inner flame tube 3, the other end is provided with fire observation hole glass 23, and the fire observation hole glass 23 is arranged at the end part of the fire observation tube 20 through a fire observation hole flange 24; one end side of the fire observation tube 20 close to the fire observation hole glass 23 is connected with a fire observation tube cooling air channel 22, and the fire observation tube cooling air channel 22 is communicated with the fire observation tube 20.
Further, a high pressure air valve is installed on the high pressure air passage 27. The ethylene tar passage 28 is provided with an ethylene tar valve. And a valve of the main carbon black tail gas channel is arranged on the main carbon black tail gas channel 14. The air valve of the ignition gun is arranged on the fire fuel air channel 32. An ignition fuel ignition valve is mounted on the ignition fuel passage 30. A carbon black tail gas central channel valve is arranged on the carbon black tail gas central channel 33; and a valve of the main carbon black tail gas channel is arranged on the main carbon black tail gas channel 14.
When in use, the method comprises the following steps:
step 1), mounting a carbon black tail gas low-nitrogen burner mounting plate 10 on a carbon black tail gas production line hot blast stove, and placing an inner flame pipe 3 and an outer flame pipe 8 at one end of a burner body in a hearth of the carbon black tail gas production line hot blast stove;
step 2), connecting an air blower outside the air channel 36, starting the air blower, and enabling air to enter from the air channel 36 and to exit from the gas diffusion disc 4 and the air diffusion disc 6 to enter the hearth; for the cooling protection of the ignition fuel ignition gun assembly 38 and the ethylene tar oil gun assembly;
step 3), opening an air valve of the ignition gun, and enabling air to enter from an ignition fuel air channel 32 and to exit from an outer sleeve 31 of the ignition system to enter a hearth;
step 4), feeding an ignition transformer, connecting an ignition electrode joint 29 by a high-voltage wire, and generating electric sparks at the ignition electrode 2;
step 5), starting an ignition fuel ignition valve, wherein ignition fuel enters from an ignition fuel channel 30 and is ignited by electric sparks generated by an ignition electrode 2, and ignition flame is combusted in a hearth;
step 6), after the ignition is confirmed, turning off the electronic ignition;
step 7), opening an ethylene tar valve and a high-pressure air valve, wherein ethylene tar enters from an ethylene tar passage 28, high-pressure air enters from a high-pressure air passage 27, and the ethylene tar and the high-pressure air are atomized and sprayed out from an oil nozzle of an ethylene tar oil gun through an ethylene tar oil gun assembly and are ignited by flame of ignition fuel of an ignition fuel ignition gun assembly 38; burning ethylene tar flame in a hearth till the furnace temperature is over 800 ℃;
step 8), opening a valve of a carbon black tail gas central channel, allowing the carbon black tail gas to enter from the carbon black tail gas central channel 33 and to be sprayed out from a nozzle 5 of the carbon black tail gas central channel, and igniting the carbon black tail gas of the central channel by flame of ethylene tar to burn in a hearth;
then opening a valve of the main channel of the carbon black tail gas, enabling the carbon black tail gas to enter from the main channel 14 of the carbon black tail gas, and be sprayed out from the main fuel spray pipe 7 of the carbon black tail gas to be ignited and combusted in the hearth;
flame generated by the carbon black tail gas central nozzle firstly contacts with the gas diffusion disc 4 and the air diffusion disc (6 to support combustion, the air is sufficient and is rich in oxygen combustion, the temperature of the combustion flame is high, the surplus air is diffused outwards and continues to support combustion for the main fuel spray pipe 7 of the carbon black tail gas, and the air quantity is reduced and is light oxygen combustion;
the concentration of nitrogen oxides in carbon black tail gas combustion smoke is reduced from 900-1100 mg/m3 to 300-400 mg/m3 during ordinary combustion through thick and light combustion of the carbon black tail gas;
step 9), closing the ethylene tar valve and the high-pressure air valve;
step 10), adjusting the burning of the carbon black tail gas low-nitrogen combustor to normal working condition load according to production requirements;
step 11), detecting the content of the flue gas, recording the contents of O2 and NO, paying attention to the content of CO, and adjusting the proportion of air and carbon black tail gas to ensure that the fuel is fully combusted;
step 12), communicating the flue gas generated in the hearth with a circulating flue gas channel 37 through a pipeline; a smoke external circulation pipeline valve is arranged on the circulation smoke channel 37, the smoke external circulation pipeline valve is opened, smoke generated in the hearth enters from the circulation smoke channel 37, is mixed with air entering from the air channel 36 in the mixing box 35, and then enters a flame field from the gas diffusion disc 4 and the air diffusion disc 6;
therefore, the flue gas generated by combustion is reintroduced into the combustion area, the flow rate of flue gas circulation is adjusted, the concentration of nitrogen oxides in the flue gas is reduced to the minimum under the condition that the combustor is fully combusted and the working condition is met, and at the moment, the nitrogen oxides in the flue gas can be basically controlled to be below 100mg/m 3.
The burner body is provided with a fire observation tube 20, one end of the fire observation tube 20 extends into the inner flame tube 3, the other end of the fire observation tube is provided with fire observation hole glass 23, the fire observation hole glass 23 is arranged at the end part of the fire observation tube 20 through a fire observation hole flange 24, and the combustion condition in the hearth can be observed through the fire observation hole glass 23 and the fire observation tube 20; the side edge of one end of the fire observation pipe 20 close to the fire observation hole glass 23 is connected with the fire observation pipe cooling air channel 22, the fire observation pipe cooling air channel 22 is communicated with the fire observation pipe 20, and when the fire observation pipe cooling air channel is used, external cooling air is blown into the fire observation pipe 20 through the fire observation pipe cooling air channel 22, so that the damage to the fire observation hole glass 23 caused by the backflow of combustion heat in a hearth to the fire observation hole glass 23 through the fire observation pipe 20 is effectively avoided, and the effect of reducing the temperature of the fire observation pipe 20 at one end of the fire observation hole glass 23 is achieved.
An ignition gun bracket 11 is arranged in the inner flame tube 3, and a high-pressure air channel 27, an ethylene tar channel 28, an ignition fuel channel 30 and an ethylene tar oil gun oil nozzle 1 are arranged on the ignition gun bracket 11; the burner body is provided with an inner flame tube supporting tube 12, and the inner flame tube 3 is installed and fixed on the inner flame tube supporting tube 12. The combustor body is provided with a lifting hook 13 which is convenient for lifting the whole combustor. The tail end of the burner body is provided with a first flange 25 and a second flange 26, and an ignition fuel channel 30, a high-pressure air channel 27 and an ethylene tar channel 28 penetrate out of the first flange 25 and the second flange 26.
Claims (8)
1. A carbon black tail gas low-nitrogen combustor comprises a combustor body and is characterized in that one end of the combustor body is provided with an inner flame tube (3) and an outer flame tube (8), the inner flame tube (3) is arranged in the outer flame tube (8), and a cavity between the outer flame tube (8) and the inner flame tube (3) forms an outer flame cavity; the other end of the burner body is a tail end;
an ignition fuel channel (30) is arranged in the burner body, one end of the ignition fuel channel (30) is fixed in the inner flame tube (3), and the other end of the ignition fuel channel penetrates out of and is fixed at the tail end of the burner body; an ignition fuel ignition gun assembly (38) penetrates through the ignition fuel channel (30), two ends of the ignition fuel ignition gun assembly (38) penetrate out of the ignition fuel channel (30) respectively, one end of the ignition gun assembly (38) is arranged in the inner flame tube (3), an ignition electrode connector (29) is arranged at one end of the tail end of the burner body, and an ignition electrode (2) is arranged at one end of the ignition gun assembly (38) in the inner flame tube (3);
the combustor body is also provided with an air channel (36), a mixing box (35) and a circulating flue gas channel (37), and the air channel (36) and the circulating flue gas channel (37) are communicated with the mixing box (35); a gas diffusion disc (4) and an air diffusion disc (6) are arranged in the inner flame tube (3), and an air channel (36) penetrates out of the mixing box (35) and then is communicated with the gas diffusion disc (4) and the air diffusion disc (6);
the burner body is also provided with an ignition fuel air channel (32) and an ignition system outer sleeve (31), the ignition fuel air channel (32) is communicated with the ignition system outer sleeve (31), one end of the ignition system outer sleeve (31) is communicated with the ignition fuel air channel (32), and the other end of the ignition system outer sleeve is arranged in the inner flame tube (3);
the burner body is also provided with a high-pressure air channel (27) and an ethylene tar channel (28), the high-pressure air channel (27) and the ethylene tar channel (28) extend to the inner flame tube (3) through an ethylene tar gun assembly (39), the front end of the ethylene tar gun assembly (39) is provided with an ethylene tar gun nozzle (1), and the high-pressure air channel (27) and the ethylene tar channel (28) are communicated with the ethylene tar gun nozzle (1);
the burner body is also provided with a carbon black tail gas central channel (33) and a carbon black tail gas central channel nozzle (5), the carbon black tail gas central channel nozzle (5) is arranged in the inner flame tube (3), and the carbon black tail gas central channel (33) is communicated with the carbon black tail gas central channel nozzle (5);
the combustor body is also provided with a carbon black tail gas main channel (14) and a carbon black tail gas main fuel spray pipe (7), the carbon black tail gas main fuel spray pipe (7) is arranged in the outer flame pipe (8), and the carbon black tail gas main channel (14) is communicated with the carbon black tail gas main fuel spray pipe (7);
the burner body is also provided with a carbon black tail gas low-nitrogen burner mounting plate (10) for mounting the carbon black tail gas low-nitrogen burner on a hot blast stove of a carbon black tail gas production line.
2. The carbon black tail gas low-nitrogen burner as claimed in claim 1, wherein a fire observation tube (20) is further arranged on the burner body, one end of the fire observation tube (20) extends into the inner flame tube (3), the other end of the fire observation tube is provided with fire observation hole glass (23), and the fire observation hole glass (23) is mounted at the end part of the fire observation tube (20) through a fire observation hole flange (24); one end side edge of the fire observation tube (20) close to the fire observation hole glass (23) is connected with a fire observation tube cooling air channel (22), and the fire observation tube cooling air channel (22) is communicated with the fire observation tube (20).
3. A carbon black tail gas low-nitrogen burner as claimed in claim 1, wherein a high-pressure air valve is provided on the high-pressure air passage (27);
an ethylene tar valve is arranged on the ethylene tar passage (28);
a main carbon black tail gas channel valve is arranged on the main carbon black tail gas channel (14);
an air valve of an ignition gun is arranged on the fire fuel air channel (32);
an ignition fuel ignition valve is arranged on the ignition fuel channel (30);
a carbon black tail gas central channel valve is arranged on the carbon black tail gas central channel (33);
and a carbon black tail gas main channel valve is arranged on the carbon black tail gas main channel (14).
4. The carbon black tail gas low-nitrogen burner as claimed in claim 1, wherein an ignition gun support (11) is arranged in the inner flame tube (3), and the high-pressure air channel (27), the ethylene tar channel (28), the ignition fuel channel (30) and the ethylene tar oil gun nozzle (1) are arranged on the ignition gun support (11);
an inner flame tube supporting tube (12) is arranged on the burner body, and the inner flame tube (3) is fixedly arranged on the inner flame tube supporting tube (12).
5. A carbon black tail gas low-nitrogen burner as claimed in claim 1, wherein the burner body is provided with a lifting hook (13) for conveniently lifting the whole burner.
6. The carbon black tail gas low-nitrogen burner as claimed in claim 1, wherein a first flange (25) and a second flange (26) are mounted at the tail end of the burner body, and an ignition fuel channel (30), a high-pressure air channel (27) and an ethylene tar channel (28) penetrate out of the first flange (25) and the second flange (26).
7. A use method of a carbon black tail gas low-nitrogen combustor is characterized by comprising the following steps:
step 1), mounting a carbon black tail gas low-nitrogen burner mounting plate (10) on a carbon black tail gas production line hot blast stove, and placing an inner flame pipe (3) and an outer flame pipe (8) at one end of a burner body in a hearth of the carbon black tail gas production line hot blast stove;
step 2), connecting an air blower outside the air channel (36), starting the air blower, enabling air to enter from the air channel (36), and enabling the air to exit from the gas diffusion disc (4) and the air diffusion disc (6) to enter the hearth;
step 3), opening an air valve of an ignition gun, and enabling air to enter from an ignition fuel air channel (32) and to exit from an outer sleeve (31) of an ignition system to enter a hearth;
step 4), feeding an ignition transformer, connecting an ignition electrode joint (29) through a high-voltage wire, and generating electric sparks on the ignition electrode (2);
step 5), starting an ignition fuel ignition valve, wherein ignition fuel enters from an ignition fuel channel (30) and is ignited by electric sparks generated by the electronic ignition gun assembly (2), and ignition flame is combusted in a hearth;
step 6), after the ignition is confirmed, turning off the electronic ignition;
step 7), opening an ethylene tar valve and a high-pressure air valve, wherein ethylene tar enters from an ethylene tar passage (28), high-pressure air enters from a high-pressure air passage (27), and the ethylene tar and the high-pressure air are atomized and sprayed out from an ethylene tar oil gun nozzle (1) through an ethylene tar oil gun assembly (39) and then are ignited by flame of ignition fuel of an ignition fuel ignition gun assembly (38); burning ethylene tar flame in a hearth till the furnace temperature is over 800 ℃;
step 8), opening a valve of a carbon black tail gas central channel, allowing the carbon black tail gas to enter from the carbon black tail gas central channel (33) and to be sprayed out from a nozzle (5) of the carbon black tail gas central channel, and igniting the carbon black tail gas of the central channel by flame of ethylene tar to burn in a hearth;
then opening a valve of the main channel of the carbon black tail gas, enabling the carbon black tail gas to enter from the main channel (14) of the carbon black tail gas, and be sprayed out from the main fuel spray pipe (7) of the carbon black tail gas to be ignited and combusted in the hearth;
flame generated by the carbon black tail gas central nozzle firstly contacts with air from the fuel gas diffusion disc (4) and the air diffusion disc (6) to support combustion, the air is sufficient and is rich in oxygen for combustion, the temperature of the combustion flame is high, the surplus air is diffused outwards and continues to support combustion for the fuel of the main fuel spray pipe (7) of the carbon black tail gas, and the air quantity is reduced and is light oxygen for combustion;
the concentration of nitrogen oxides in the carbon black tail gas combustion flue gas during ordinary combustion is from 900-1100 mg/m through the thick and thin combustion of the carbon black tail gas3Reduce the concentration to 300-400 mg/m3；
Step 9), closing the ethylene tar valve and the high-pressure air valve;
step 10), adjusting the burning of the carbon black tail gas low-nitrogen combustor to normal working condition load according to production requirements;
step 11), detecting the content of the flue gas, recording the contents of O2 and NO, paying attention to the content of CO, and adjusting the proportion of air and carbon black tail gas to ensure that the fuel is fully combusted;
step 12), communicating the flue gas generated in the hearth with a circulating flue gas channel (37) through a pipeline; a smoke external circulation pipeline valve is arranged on the circulation smoke channel (37), the smoke external circulation pipeline valve is opened, part of smoke generated in the hearth enters from the circulation smoke channel (37), is mixed with air entering from the air channel (36) in a mixing box (35), and then enters a flame field from the gas diffusion disc (4) and the air diffusion disc (6);
thereby reintroducing part of flue gas generated by combustion into the combustion area, adjusting the flow rate of flue gas circulation, and reducing the concentration of nitrogen oxide in the flue gas to the minimum under the condition that the combustor fully combusts and meets the working condition, wherein the nitrogen oxide in the flue gas can be basically controlled to 100mg/m3The following.
8. The use method of the carbon black tail gas low-nitrogen burner as claimed in claim 7, wherein a fire observation tube (20) is arranged on the burner body, one end of the fire observation tube (20) extends into the inner flame tube (3), the other end is provided with a fire observation hole glass (23), the fire observation hole glass (23) is mounted at the end part of the fire observation tube (20) through a fire observation hole flange (24), and the combustion condition in the hearth can be observed through the fire observation hole glass (23) and the fire observation tube (20);
the side edge of one end, close to the fire observation hole glass (23), of the fire observation pipe (20) is connected with the fire observation pipe cooling air channel (22), the fire observation pipe cooling air channel (22) is communicated with the fire observation pipe (20), when the cooling air device is used, external cooling air is blown into the fire observation pipe (20) through the fire observation pipe cooling air channel (22), the damage to the fire observation hole glass (23) caused by the fact that combustion heat in a hearth flows back to the fire observation hole glass (23) through the fire observation pipe (20) is effectively avoided, and the effect of reducing the temperature of the fire observation pipe (20) at one end of the fire observation hole glass (23) is achieved.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117606241A (en) * | 2024-01-18 | 2024-02-27 | 山西安仑化工有限公司 | Carbon black reaction furnace capable of switching oil gun on line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117606241A (en) * | 2024-01-18 | 2024-02-27 | 山西安仑化工有限公司 | Carbon black reaction furnace capable of switching oil gun on line |
| CN117606241B (en) * | 2024-01-18 | 2024-04-12 | 山西安仑化工有限公司 | Carbon black reaction furnace capable of switching oil gun on line |
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