CN214307102U - Special dense-dilute combustion low-emission natural gas combustor for asphalt stirring equipment - Google Patents
Special dense-dilute combustion low-emission natural gas combustor for asphalt stirring equipment Download PDFInfo
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- CN214307102U CN214307102U CN202022901112.8U CN202022901112U CN214307102U CN 214307102 U CN214307102 U CN 214307102U CN 202022901112 U CN202022901112 U CN 202022901112U CN 214307102 U CN214307102 U CN 214307102U
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Abstract
The utility model discloses a special dense-dilute combustion low-emission natural gas burner for asphalt mixing equipment, which comprises a burner shell, the burner shell is of a hollow shell structureThe inner cavity of the combustor shell is provided with a strong combustion chamber and an air inlet chamber, and the air inlet chamber is connected with an air supply outlet of the first air supply system and used for conveying air into the combustor shell; the combustor is characterized in that a natural gas nozzle is fixedly connected to the middle of the air inlet chamber, a premixing chamber is arranged in the middle of an inner cavity of the combustor shell, an air inlet pipe is fixedly connected to the center of the natural gas nozzle, a weak combustion chamber is fixedly connected to the left end of the premixing chamber, a first vortex plate is fixedly connected to the joint of the premixing chamber and the weak combustion chamber, a fuel gas spraying pipe communicated with the premixing chamber is connected to the outer wall of the premixing chamber, and one end, far away from the premixing chamber, of the fuel gas spraying pipe penetrates through a first supporting plate and faces the strong combustion chamber. The utility model makes CO and NOxThe emission is reduced, and the gas consumption is reduced.
Description
The technical field is as follows:
the utility model relates to a combustor technical field, concretely relates to special dense-dilute burning of pitch agitated vessel hangs down emission type natural gas burner.
Background art:
the burner is a general term for a device for ejecting fuel and air in a certain manner to perform mixed combustion. The combustor is an important core part of asphalt road pavement material heating and stirring equipment in the road construction industry. Since the country is built in China, the energy sources adopted by the combustor are from coal, diesel oil and heavy oil to the existing natural gas, the requirement for environmental protection is improved, and CO and NO contained in combustion tail gasXThe number of compounds, etc. must be reduced.
The natural gas burner is a combustion device taking natural gas as fuel. Natural gas belongs to high-cleanness energy, but harmful compounds CO and NO are still generated in the combustion processXParticularly, the amount of CO produced in low-temperature combustion is large, and the amount of CO produced in high-temperature combustion is reduced; and NOXThe amount of the formed gas is small in the low-temperature combustion and large in the high-temperature combustion. So that most natural gas burners in recent years contain NO despite a low CO content in the exhaust gasesXThe common phenomenon is that the current natural gas burner production enterprises face the technical problem which needs to be solved urgently.
The utility model has the following contents:
the utility model aims at solving the technical problem and providing a special dense-dilute combustion low-emission natural gas burner for asphalt mixing equipment.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
a special dense-dilute combustion low-emission natural gas burner for asphalt mixing equipment comprises a burner shell, a strong combustion chamber, a weak combustion chamber, a flame spraying pipe, a first supporting plate, a first vortex plate, a premixing chamber, a second supporting plate, a second vortex plate, a natural gas supply system, a natural gas pipe, a natural gas nozzle and an air inlet chamber, wherein the burner shell is of a hollow shell structure, the strong combustion chamber and the air inlet chamber are arranged in the inner cavity of the burner shell, the air inlet chamber is positioned on the right side of the burner shell, and the air inlet chamber is connected with an air supply outlet of the first air supply system and used for conveying air into the burner shell; the natural gas nozzle is fixedly connected to the middle of the air inlet chamber, a natural gas pipe is fixedly connected to the outer wall of the natural gas nozzle, the natural gas pipe penetrates through the burner shell and is connected with a natural gas supply system, and the natural gas supply system is connected with an external natural gas source; a premixing chamber is arranged in the middle of the inner cavity of the combustor shell, a second supporting plate is fixedly connected to the outer wall of the premixing chamber and fixedly connected to the inner wall of the combustor shell, the premixing chamber is fixedly connected to the inner wall of the combustor shell through the second supporting plate, and an air channel is formed between the premixing chamber and the combustor shell; one end of the premixing chamber, which is close to the air inlet chamber, is fixedly connected with a second vortex plate, and the second vortex plate is positioned on the outer side of the natural gas nozzle; the center of the natural gas nozzle is fixedly connected with an air inlet pipe, the tail end of the air inlet pipe extends out of the combustor shell and is connected with a second air supply system, the second air supply system is connected with an air source, and the natural gas nozzle is used for ejecting air input by the air inlet pipe and natural gas input by a natural gas pipe in an umbrella shape towards the direction of the premixing chamber;
the left end of the premixing chamber is fixedly connected with a weak combustion chamber, a first vortex plate is fixedly connected at the joint of the premixing chamber and the weak combustion chamber, a first supporting plate is fixedly connected to the outer side of the weak combustion chamber, the first supporting plate is fixedly connected to the inner wall of the combustor shell, a separation cavity channel is formed between the weak combustion chamber and the combustor shell, a strong combustion chamber is arranged on the left side of the combustor shell, and the strong combustion chamber is located on the left side of the weak combustion chamber; the outer wall of the premixing chamber is connected with a fuel injection pipe communicated with the premixing chamber, and one end, far away from the premixing chamber, of the fuel injection pipe penetrates through the first supporting plate and faces the strong combustion chamber.
Further, the first scroll plate and the second scroll plate are of a spiral structure. The first scroll plate and the second scroll plate are used for rotationally dispersing passing gas.
Further, the natural gas supply system comprises a gas control valve, a filter and a natural gas conveying pipe, wherein the gas control valve and the filter are connected in series on the natural gas conveying pipe.
Furthermore, the first air supply system and the second air supply system comprise a fan, an air door, a silencer and a cylinder body, and the fan, the air door and the silencer are connected in series on the cylinder body.
The relevant size and material selection of the structure of each part in the embodiment can be obtained by matching with limited experiments under the conditions of different types of equipment (yield, gas pressure, gas flow, pressure of a fan and gas flow).
The utility model provides a pair of special dense-dilute combustion low-emission natural gas burner of asphalt mixing equipment has following beneficial effect: the heating system for the asphalt stirring equipment solves the contradiction in the production that NO is generated at a high-temperature stage in the combustion process of natural gas and CO, NO and the like are generated at different temperature stages, and the combustor disclosed by the application adopts two-stage setting of concentration and dilution and circulating combustion of flue gas to enable CO and NO to be generatedXThe emission is reduced, the gas consumption is reduced, the emission of harmful gases is reduced, and the energy is saved.
Description of the drawings:
the following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings:
fig. 1 is a schematic structural view of a low-emission natural gas burner for dense-dilute combustion dedicated for asphalt mixing equipment provided by the present invention;
fig. 2 is the utility model provides a gas circulation schematic diagram in the special dense-dilute combustion low-emission natural gas combustor of pitch agitated vessel.
The reference numbers in the figures illustrate: 1. a burner housing; 101. a strong combustion chamber; 2. a weak combustion chamber; 3. injecting a combustion gas pipe; 4. a first support plate; 5. a first scroll plate; 6. a premixing chamber; 7. a second support plate; 8. a second scroll plate; 9. a natural gas supply system; 91. a natural gas pipe; 10. a natural gas nozzle; 11. an air inlet pipe; 102. an air intake chamber; A. a first air stream; B. a second air stream; C. a third air stream; D. a natural gas stream.
The specific implementation mode is as follows:
it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as up-down-left-right-front-back … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components in a specific posture (as shown in the drawings) -motion situation, etc., and if the specific posture is changed, the directional indicator is changed accordingly, and the connection may be a direct connection or an indirect connection.
As shown in fig. 1, a special dense-dilute combustion low-emission natural gas burner for asphalt mixing equipment comprises a burner shell 1, a strong combustion chamber 101, a weak combustion chamber 2, a fuel injection pipe 3, a first support plate 4, a first vortex plate 5, a premixing chamber 6, a second support plate 7, a second vortex plate 8, a natural gas supply system 9, a natural gas pipe 91, a natural gas nozzle 10 and an air inlet chamber 102, wherein the burner shell 1 is of a hollow shell structure, the strong combustion chamber 101 and the air inlet chamber 102 are arranged in the inner cavity of the burner shell 1, the air inlet chamber 102 is located on the right side of the burner shell 1, and the air inlet chamber 102 is connected with an air supply outlet of the first air supply system and used for conveying air into the burner shell 1; the middle part of the air inlet chamber 102 is fixedly connected with a natural gas nozzle 10, the outer wall of the natural gas nozzle 10 is fixedly connected with a natural gas pipe 91, the natural gas pipe 91 penetrates through the burner shell 1 and is connected with a natural gas supply system 9, and the natural gas supply system 9 is connected with an external natural gas source; a premixing chamber 6 is arranged in the middle of the inner cavity of the combustor shell 1, a second support plate 7 is fixedly connected to the outer wall of the premixing chamber 6, the second support plate 7 is fixedly connected to the inner wall of the combustor shell 1, the premixing chamber 6 is fixedly connected to the inner wall of the combustor shell 1 through the second support plate 7, and an air channel is formed between the premixing chamber 6 and the combustor shell 1; one end of the premixing chamber 6 close to the air inlet chamber 102 is fixedly connected with a second vortex plate 8, and the second vortex plate 8 is positioned outside the natural gas nozzle 10; an air inlet pipe 11 is fixedly connected to the center of the natural gas nozzle 10, the tail end of the air inlet pipe 11 extends out of the burner shell 1 and is connected with a second air supply system, the second air supply system is connected with an air source, and the natural gas nozzle 10 is used for ejecting air input by the air inlet pipe 11 and natural gas input by the natural gas pipe 91 to the direction of the premixing chamber 6 in an umbrella shape;
the left end of the premixing chamber 6 is fixedly connected with a weak combustion chamber 2, the joint of the premixing chamber 6 and the weak combustion chamber 2 is fixedly connected with a first vortex plate 5, the outer side of the weak combustion chamber 2 is fixedly connected with a first supporting plate 4, the first supporting plate 4 is fixedly connected to the inner wall of the combustor shell 1, a separation cavity channel is formed between the weak combustion chamber 2 and the combustor shell 1, the left side of the combustor shell 1 is provided with a strong combustion chamber 101, and the strong combustion chamber 101 is positioned on the left side of the weak combustion chamber 2; the outer wall of the premixing chamber 6 is connected with a fuel injection pipe 3 communicated with the premixing chamber 6, and one end, far away from the premixing chamber 6, of the fuel injection pipe 3 penetrates through the first supporting plate 4 and faces the strong combustion chamber 101.
Specifically, the first scroll plate 5 and the second scroll plate 8 are of a spiral structure. The first scroll plate 5 and the second scroll plate 8 serve to rotationally disperse the passing gas.
Specifically, the natural gas supply system 9 includes a gas control valve, a filter, and a natural gas delivery pipe, and the gas control valve and the filter are connected in series to the natural gas delivery pipe.
Specifically, the first air supply system and the second air supply system comprise a fan, an air door, a silencer and a cylinder, and the fan, the air door and the silencer are connected in series on the cylinder.
In the utility model, as shown in fig. 2, the natural gas flow D and the third air flow C are sprayed out from the premixing chamber 6 through the natural gas nozzle 10 and are mixed with the second air flow B passing through the second vortex plate 8, and the mixed gas passes through the first vortex plate 5 againEntering a weak combustion chamber 2 for first-stage combustion, setting the coefficient of combustion air in the first stage to be less than 1, and setting nitrogen oxide NO as the concentration of oxygen and the combustion temperature are lowerXThe generated first-stage combustion smoke and residual gas are sprayed to the strong combustion chamber 101, and the first air which flows through the cavity between the premixing chamber 6, the weak combustion chamber 2 and the burner shell 1 and enters the strong combustion chamber 101 and the mixed gas sprayed from the gas spraying pipe 3 are combined to form second-stage high-temperature combustion; the first-stage combustion and the second-stage high-temperature combustion adopt flue gas circulation, thereby effectively reducing nitrogen oxide NOXThe generation temperature (weak combustion chamber 2) and the effective temperature (strong combustion chamber 101) for burning the compounds such as carbon, nitrogen and the like are increased, thereby realizing the reduction of the emission of harmful gases and saving energy.
The relevant size and material selection of the structure of each part in the embodiment can be obtained by matching with limited experiments under the conditions of different types of equipment (yield, gas pressure, gas flow, pressure of a fan and gas flow).
The utility model discloses the type detects closed-loop control through agitated vessel thermometer flue in the implementation process, realizes feedback such as nitrogen oxide, carbon monoxide, operation, adjusts the air supply proportion of fan in first air supply system and the second air supply system, but accurate control harmful gas's emission.
The foregoing shows and describes the general principles, essential features, and features of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the description of the above embodiments and the description is only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications are all within the scope of the present invention as claimed. The scope of the invention is to be protected by the following claims and their equivalents.
Claims (4)
1. The utility model provides a special dense-dilute burning of pitch agitated vessel low discharge type natural gas combustor which characterized in that: the combustor comprises a combustor shell (1), a strong combustion chamber (101), a weak combustion chamber (2), a fuel injection pipe (3), a first supporting plate (4), a first vortex plate (5), a premixing chamber (6), a second supporting plate (7), a second vortex plate (8), a natural gas supply system (9), a natural gas pipe (91), a natural gas nozzle (10) and an air inlet chamber (102), wherein the combustor shell (1) is of a hollow shell structure, the strong combustion chamber (101) and the air inlet chamber (102) are arranged in the inner cavity of the combustor shell (1), the air inlet chamber (102) is located on the right side of the combustor shell (1), and the air inlet chamber (102) is connected with an air supply outlet of the first air supply system and used for conveying air into the combustor shell (1); the natural gas nozzle (10) is fixedly connected to the middle of the air inlet chamber (102), a natural gas pipe (91) is fixedly connected to the outer wall of the natural gas nozzle (10), the natural gas pipe (91) penetrates through the burner shell (1) and is connected with a natural gas supply system (9), and the natural gas supply system (9) is connected with an external natural gas source; a premixing chamber (6) is arranged in the middle of the inner cavity of the combustor shell (1), a second supporting plate (7) is fixedly connected to the outer wall of the premixing chamber (6), the second supporting plate (7) is fixedly connected to the inner wall of the combustor shell (1), the premixing chamber (6) is fixedly connected to the inner wall of the combustor shell (1) through the second supporting plate (7), and an air channel is formed between the premixing chamber (6) and the combustor shell (1); one end of the premixing chamber (6) close to the air inlet chamber (102) is fixedly connected with a second vortex plate (8), and the second vortex plate (8) is positioned on the outer side of the natural gas nozzle (10); the center of the natural gas nozzle (10) is fixedly connected with an air inlet pipe (11), the tail end of the air inlet pipe (11) extends out of the combustor shell (1) and is connected with a second air supply system, the second air supply system is connected with an air source, and the natural gas nozzle (10) is used for ejecting air input by the air inlet pipe (11) and natural gas input by the natural gas pipe (91) in an umbrella shape towards the direction of the premixing chamber (6);
the left end of the premixing chamber (6) is fixedly connected with the weak combustion chamber (2), the joint of the premixing chamber (6) and the weak combustion chamber (2) is fixedly connected with a first vortex plate (5), the outer side of the weak combustion chamber (2) is fixedly connected with a first supporting plate (4), the first supporting plate (4) is fixedly connected to the inner wall of the combustor shell (1) and enables the weak combustion chamber (2) and the combustor shell (1) to form a separation cavity channel, the left side of the combustor shell (1) is provided with a strong combustion chamber (101), and the strong combustion chamber (101) is located on the left side of the weak combustion chamber (2); the outer wall of the premixing chamber (6) is connected with a fuel gas spraying pipe (3) communicated with the premixing chamber (6), and one end, far away from the premixing chamber (6), of the fuel gas spraying pipe (3) penetrates through the first supporting plate (4) and faces the strong combustion chamber (101).
2. The special dense-dilute combustion low-emission natural gas burner for the asphalt mixing plant as claimed in claim 1, wherein: the first scroll plate (5) and the second scroll plate (8) are of spiral structures.
3. The special dense-dilute combustion low-emission natural gas burner for the asphalt mixing plant as claimed in claim 1, wherein: the natural gas supply system (9) comprises a gas control valve, a filter and a natural gas conveying pipe, wherein the gas control valve and the filter are connected in series on the natural gas conveying pipe.
4. The special dense-dilute combustion low-emission natural gas burner for the asphalt mixing plant as claimed in claim 1, wherein: the first air supply system and the second air supply system comprise a fan, an air door, a silencer and a cylinder body, and the fan, the air door and the silencer are connected in series on the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022901112.8U CN214307102U (en) | 2020-12-03 | 2020-12-03 | Special dense-dilute combustion low-emission natural gas combustor for asphalt stirring equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022901112.8U CN214307102U (en) | 2020-12-03 | 2020-12-03 | Special dense-dilute combustion low-emission natural gas combustor for asphalt stirring equipment |
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| CN214307102U true CN214307102U (en) | 2021-09-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116182160A (en) * | 2023-02-27 | 2023-05-30 | 大唐辽源发电厂 | Intelligent low-nitrogen staged combustor based on data monitoring and control system thereof |
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2020
- 2020-12-03 CN CN202022901112.8U patent/CN214307102U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116182160A (en) * | 2023-02-27 | 2023-05-30 | 大唐辽源发电厂 | Intelligent low-nitrogen staged combustor based on data monitoring and control system thereof |
| CN116182160B (en) * | 2023-02-27 | 2023-08-08 | 大唐辽源发电厂 | Intelligent low-nitrogen staged combustor based on data monitoring and control system thereof |
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