CN215765137U - Safety burner for ultralow-emission low-concentration gas - Google Patents
Safety burner for ultralow-emission low-concentration gas Download PDFInfo
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- CN215765137U CN215765137U CN202121464621.7U CN202121464621U CN215765137U CN 215765137 U CN215765137 U CN 215765137U CN 202121464621 U CN202121464621 U CN 202121464621U CN 215765137 U CN215765137 U CN 215765137U
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Abstract
The utility model discloses a safe combustion device for ultralow-emission low-concentration gas, which comprises a pipeline: the pipeline is sequentially provided with an adjusting valve, an automatic quick cut-off valve, a three-way pipe, a dry flame arrester and a conical cavity with holes from left to right, the end part of the pipeline is provided with a combustion cylinder, the pipeline is provided with an automatic control system, the conical cavity with holes is positioned in the combustion cylinder, a high-temperature-resistant alloy fiber braided fabric is arranged in the conical cavity with holes, an ignition device is arranged in front of the pipeline and the conical cavity with holes, the end part of the three-way pipe is provided with a purging fan, and a check valve is arranged between the purging fan and the three-way pipe; the automatic control system consists of an automatic control cabinet, a pressure sensor positioned in front of the regulating valve and the automatic quick cut-off valve, and a methane concentration sensor positioned between the three-way pipe and the dry flame arrester. The research and development of the ultralow-emission low-concentration gas safe combustion device can fill the blank that the low-concentration gas cannot be directly combusted and utilized, and thoroughly solve the problem that the low-concentration gas cannot be directly combusted and utilized.
Description
Technical Field
The utility model relates to the technical field of low-concentration gas treatment, in particular to a safe combustion device for ultralow-emission low-concentration gas.
Background
China 'coal mine safety regulations' stipulate: when the concentration of the gas extracted from the coal mine is lower than 30%, the gas cannot be directly combusted as gas, so that the combustion of the low-concentration gas is always a forbidden area.
Most of gas extracted from coal mines in China is low-concentration gas, and is directly discharged to the air because the gas cannot be combusted and utilized at present, so that not only is a large amount of resources and energy wasted for a long time, but also the methane in the extracted gas is serious greenhouse gas, the greenhouse gas effect of the methane is 21 times of that of carbon dioxide, the greenhouse effect is aggravated by directly discharging a large amount of gas, and the quality of the atmospheric environment is seriously damaged. If the evacuated low-concentration gas is directly combusted and utilized, on one hand, the evacuated low-concentration gas can replace high-quality resources such as coal, natural gas and electric energy, the development of circular economy is promoted, and the sustainable development power of enterprises is improved. The low-concentration gas is directly combusted and then converted into harmless CO2 and H2O, the emission of greenhouse gases is greatly reduced, and meanwhile, the content of NOx in the flue gas discharged after the low-concentration gas is combusted is less than or equal to 30mg/m3, so that obvious environmental benefits are generated. In order to thoroughly change the current situation that low-concentration gas cannot be stably combusted and the emission is ultralow, a safe combustion device for ultralow-emission low-concentration gas is developed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides the ultralow-emission low-concentration gas safe combustion device, which can directly and stably combust low-concentration gas pumped and discharged from a coal mine, comprehensively utilizes the low-concentration gas or exhausts the gas after destruction, changes waste into valuable, turns harm into benefit, destroys methane, reduces greenhouse gas emission, and meets the strictest environmental requirements; the successful research and development of the technology can greatly reduce the direct evacuation of the low-concentration gas in the coal mine; the application of the technology greatly promotes the energy conservation and emission reduction work of the coal mine, and also realizes the sustainable development of energy, economy and environment.
In order to solve the technical problems, the utility model provides the following technical scheme: ultralow emission low concentration gas safety combustion device includes the pipeline:
the pipeline is sequentially provided with an adjusting valve, an automatic quick cut-off valve, a three-way pipe, a dry flame arrester and a conical cavity with holes from left to right, a combustion cylinder is arranged at the end part of the pipeline, an automatic control system is arranged on the pipeline, the conical cavity with holes is positioned in the combustion cylinder, a braided fabric is arranged in the conical cavity with holes, an ignition device is arranged in front of the pipeline and the conical cavity with holes, a purging fan is arranged at the bottom of the three-way pipe, and a check valve is arranged between the purging fan and the three-way pipe;
the automatic control system consists of an automatic control cabinet, a pressure sensor positioned in front of the regulating valve and the automatic quick cut-off valve, a methane concentration sensor positioned between the three-way pipe and the dry flame arrester, a temperature sensor positioned in the combustion cylinder and two flame sensors.
As a preferable technical scheme of the utility model, one flame sensor is arranged at one port of the dry flame arrester, which is close to the three-way pipe, and the other flame sensor is arranged above the ignition device in the combustion cylinder.
As a preferred technical scheme of the utility model, the automatic control cabinet is respectively and electrically connected with the regulating valve and the automatic quick cut-off valve.
As a preferable technical scheme of the utility model, the conical cavity with the holes is made of stainless steel.
As a preferable technical scheme of the utility model, the braided fabric is made of multiple layers of high-temperature-resistant alloy fiber materials.
As a preferred technical scheme of the utility model, an air filter is installed at the input end of the blowing fan.
In a preferred embodiment of the present invention, the ignition device is composed of two sets of igniters.
As a preferred technical scheme of the utility model, the automatic control cabinet is respectively and electrically connected with the pressure sensor, the methane concentration sensor, the temperature sensor and the flame sensor.
Compared with the prior art, the utility model can achieve the following beneficial effects:
1. the research and development of the safe combustion device for the ultralow-emission low-concentration gas fills the blank that the low-concentration gas cannot be directly combusted and utilized, and thoroughly solves the problem that the low-concentration gas cannot be directly combusted and utilized; the utility model can directly and stably burn the low-concentration gas pumped and discharged by the coal mine, comprehensively utilize the low-concentration gas or exhaust the gas after destruction, change waste into valuable, turn harm into benefit, destroy methane, reduce greenhouse gas emission and meet the strictest environmental requirements;
2. the research and development of the ultralow-emission low-concentration gas safe combustion device can greatly reduce the direct evacuation of the low-concentration gas in a coal mine; the application of the technology greatly promotes the energy conservation and emission reduction work of the coal mine, and also realizes the sustainable development of energy, economy and environment;
3. according to measurement and calculation, the heat supply cost of coal mine enterprises is reduced by more than 70%, and the economic benefit is obvious;
4. the effective utilization of the low-concentration gas can greatly reduce the emission of methane, greatly reduce the pollution to the atmospheric environment and obtain obvious environmental benefits.
Drawings
Fig. 1 is a schematic diagram of the work flow structure of the present invention.
Wherein: 1. purging the fan; 2. a check valve; 3. adjusting a valve; 4. a dry flame arrestor; 5. a conical cavity with holes; 6. a woven fabric; 7. a combustion can; 8. an ignition device; 9. an automatic control cabinet; 10. an automatic quick cut-off valve; 11. an air filter; 12. a three-way pipe; 13. a pipeline.
Detailed Description
The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example (b):
as shown in fig. 1, the safety combustion device for ultralow-emission low-concentration gas comprises a pipeline 13:
the pipeline 13 is sequentially provided with an adjusting valve 3, an automatic quick cut-off valve 10, a three-way pipe 12, a dry fire arrestor 4 and a perforated conical cavity 5 from left to right, the end part of the pipeline 13 is provided with a combustion cylinder 7, the pipeline 13 is provided with an automatic control system, the perforated conical cavity 5 is positioned inside the combustion cylinder 7, a braided fabric 6 is arranged inside the perforated conical cavity 5, an ignition device 8 is arranged in front of the pipeline 13 and the perforated conical cavity 5, the bottom of the three-way pipe 12 is provided with a purging fan 1, and a check valve 2 is arranged between the purging fan 1 and the three-way pipe 12; possible residual gas in the device pipeline 13 is thoroughly removed before the burner is started, so that the safety of the whole operation process of the combustion device is ensured; when a fault occurs, the automatic quick cut-off valve 10 is used for cutting off the transmission path of the low-concentration gas to the combustor and cutting off the supply of fuel; when the burner is in backfire or deflagration, flame is prevented from being conveyed to the fuel supply side, the safety of upstream facilities is protected, and particularly the safe operation of a low-concentration gas conveying system and a gas drainage station is ensured.
The automatic control system consists of an automatic control cabinet 9, a pressure sensor positioned in front of the regulating valve 3 and the automatic quick cut-off valve 10, a methane concentration sensor positioned between the three-way pipe 12 and the dry flame arrester 4, a temperature sensor positioned in the combustion cylinder 7 and two flame sensors; the automatic control cabinet 9 is matched with multiple monitoring control facilities of a methane concentration sensor, a pressure sensor, a temperature sensor and a flame sensor, so that the safe and stable combustion of low-concentration gas is ensured, and the NOx emission concentration meets the environmental protection requirement; on the basis of safe and stable combustion of low-concentration gas by the device, the concentration of NOx in the discharged flue gas meets the most strict limit requirement of being less than or equal to 30mg/m 3;
before low-concentration gas is conveyed, a purging fan 1 is used for thoroughly purging the interior of a combustion device; the low-concentration gas firstly passes through an automatic quick cut-off valve 10, then enters a dry type flame arrester 4, and then enters a stainless steel band pore conical cavity 5, the low-concentration gas enters a combustion surface layer of a multilayer alloy fiber braided fabric 6 through pores on the cavity, an ignition device 8 ignites the low-concentration gas after being started, the low-concentration gas is stably combusted on the surface of the fiber braided fabric 6, and the content of NOx in the generated smoke is less than or equal to 30mg/m 3; the low-concentration gas has complete safety and guarantee measures under the comprehensive measures of an automatic quick cut-off valve 10, a dry flame arrester 4, an automatic control system and various detection facilities, and the low-concentration gas is quickly combusted at low temperature on the surface of the alloy fiber braided fabric, so that the control, safety, stability, quick combustion and ultralow nitrogen combustion of the low-concentration gas are ensured; the safety guarantee facility effectively prevents the low-concentration gas from backfiring, flameout and deflagration during combustion.
In other embodiments, one flame sensor is located at a port of the dry flame arrestor 4 near the tee 12, and the other flame sensor is located inside the barrel 7 above the ignitor 8; the flame sensor located on one side, close to the three-way pipe 12, of the dry flame arrester 4 can detect whether the tempering phenomenon occurs inside the pipeline 13, and the flame sensor located inside the combustion cylinder 7 can detect whether the detonation phenomenon occurs inside the combustion cylinder 7.
In other embodiments, the automatic control cabinet 9 is electrically connected with the regulating valve 3 and the automatic quick cut-off valve 10 respectively; make automatic control cabinet 9 be connected as a whole with governing valve 3, automatic quick cut-off valve 10, be convenient for cooperate a plurality of sensors control governing valve 3 and automatic quick cut-off valve 10's switching.
In other embodiments, the conical cavity 5 with holes is made of stainless steel; the supporting multilayer soft alloy fiber braided fabric 6 is in a conical shape, and low-concentration gas penetrates through small holes and is uniformly distributed on the surface of the multilayer alloy fiber braided fabric 6.
In other embodiments, the braid 6 is made of multiple layers of high temperature resistant alloy fiber materials; the low-concentration gas is uniformly and stably combusted on the surface of the regular alloy fiber braided fabric 6 to form short-cluster flame, the combustion speed is high, the retention time is short, the combustion temperature is low, the generation opportunity of thermal NOx is shortened, the NOx emission is low, and the requirement of ultralow nitrogen emission is met.
In other embodiments, the input end of the purge fan 1 is provided with an air filter 11; can filter dust, sand grain in the air, guarantee to sweep 1 inside entering abundant, clear air of fan.
In other embodiments, the ignition device 8 is constituted by two sets of igniters; two sets of igniters work simultaneously, pulse discharge is adopted, and the igniter is high in ignition intensity, high in ignition speed and high-temperature resistant.
In other embodiments, the automatic control cabinet 9 is electrically connected with the pressure sensor, the methane concentration sensor, the temperature sensor and the flame sensor respectively; the automatic control cabinet 9 and a plurality of sensors are connected into a whole.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. Ultralow emission low concentration gas safety burner, including pipeline (13), its characterized in that:
the pipeline (13) is sequentially provided with a regulating valve (3), an automatic quick cut-off valve (10), a three-way pipe (12), a dry type flame arrester (4) and a perforated conical cavity (5) from left to right, the end part of the pipeline (13) is provided with a combustion barrel (7), an automatic control system is arranged on the pipeline (13), the perforated conical cavity (5) is positioned inside the combustion barrel (7), a braided fabric (6) is arranged inside the perforated conical cavity (5), an ignition device (8) is arranged in front of the pipeline (13) and the perforated conical cavity (5), the bottom of the three-way pipe (12) is provided with a purging fan (1), and a check valve (2) is arranged between the purging fan (1) and the three-way pipe (12);
the automatic control system consists of an automatic control cabinet (9), a pressure sensor positioned in front of the regulating valve (3) and the automatic quick cut-off valve (10), a methane concentration sensor positioned between the three-way pipe (12) and the dry flame arrester (4), a temperature sensor positioned inside the combustion cylinder (7) and two flame sensors.
2. The ultra-low discharge low-concentration gas safety combustion device according to claim 1, wherein: one flame sensor is arranged at one port of the dry flame arrester (4) close to the three-way pipe (12), and the other flame sensor is arranged above the ignition device (8) in the combustion barrel (7).
3. The ultra-low discharge low-concentration gas safety combustion device according to claim 1, wherein: the automatic control cabinet (9) is respectively electrically connected with the regulating valve (3) and the automatic quick cut-off valve (10).
4. The ultra-low discharge low-concentration gas safety combustion device according to claim 1, wherein: the conical cavity (5) with the holes is made of stainless steel.
5. The ultra-low discharge low-concentration gas safety combustion device according to claim 1, wherein: the braided fabric (6) is made of multiple layers of high-temperature-resistant alloy fiber materials.
6. The ultra-low discharge low-concentration gas safety combustion device according to claim 1, wherein: and an air filter (11) is installed at the input end of the blowing fan (1).
7. The ultra-low discharge low-concentration gas safety combustion device according to claim 1, wherein: the ignition device (8) is composed of two sets of igniters.
8. The ultra-low discharge low-concentration gas safety combustion device according to claim 1, wherein: and the automatic control cabinet (9) is respectively and electrically connected with the pressure sensor, the methane concentration sensor, the temperature sensor and the flame sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121464621.7U CN215765137U (en) | 2021-06-30 | 2021-06-30 | Safety burner for ultralow-emission low-concentration gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121464621.7U CN215765137U (en) | 2021-06-30 | 2021-06-30 | Safety burner for ultralow-emission low-concentration gas |
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| Publication Number | Publication Date |
|---|---|
| CN215765137U true CN215765137U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121464621.7U Active CN215765137U (en) | 2021-06-30 | 2021-06-30 | Safety burner for ultralow-emission low-concentration gas |
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| Country | Link |
|---|---|
| CN (1) | CN215765137U (en) |
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2021
- 2021-06-30 CN CN202121464621.7U patent/CN215765137U/en active Active
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