CN211551649U - Low-concentration gas heat source pry - Google Patents
Low-concentration gas heat source pry Download PDFInfo
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- CN211551649U CN211551649U CN201922456272.3U CN201922456272U CN211551649U CN 211551649 U CN211551649 U CN 211551649U CN 201922456272 U CN201922456272 U CN 201922456272U CN 211551649 U CN211551649 U CN 211551649U
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Abstract
The utility model provides a low-concentration gas heat source pry, which comprises a shell, an air supply system, a plurality of heat source pry reaction chambers and an electric arc exciter, wherein the lower part in the shell is provided with the heat source pry reaction chambers, the heat source pry reaction chambers are internally provided with catalytic reaction beds, and the upper parts of the heat source pry reaction chambers are provided with oxidation gas outlets; the electric arc exciter is installed inside the shell and located at an oxidation gas outlet of the heat source prying reaction chamber, the gas supply system comprises a vent pipe communicated with the coal mine gas extraction system, a vent regulating valve is arranged on the vent pipe, a plurality of branch pipes are arranged at the tail ends of the vent pipe, the branch pipes are connected with the corresponding heat source prying reaction chamber pipelines, and directional oxidation valves are installed on the branch pipes. The device can utilize gas with the concentration of more than 5 percent on the premise of not needing an external heat source, and has high economical efficiency.
Description
Technical Field
The utility model belongs to the technical field of colliery gas utilizes, especially, relate to a low concentration gas heat source sled.
Background
The gas control is an important guarantee for the safety production of coal mines, along with the continuous development of the technology, the coal mine gas is gradually used as a resource for development and utilization, and in the prior art, the gas with the emission concentration of more than 8 percent has a mature utilization technology and is mainly concentrated on civil sales and industrial power generation. The utilization technology of the gas with the concentration of below 8 percent is not mature, and although the ventilation air methane oxidation technology can be utilized to a certain extent, the ventilation air methane oxidation technology has the defects of poor adaptability, secondary pollution, high operation cost, large investment and the like, so that the ventilation air methane oxidation technology is difficult to widely popularize; under the condition that the gas cannot be utilized, most mines can directly empty the gas with low concentration, so that not only is the resource waste caused, but also the methane in the gas can pollute the atmospheric environment.
Disclosure of Invention
An object of the utility model is to provide a low concentration gas heat source sled, the device can utilize the gas more than 5% of concentration under the prerequisite that need not the external heat source, and the economic nature is high.
In order to achieve the above purpose, the technical scheme of the utility model is that: a low-concentration gas heat source pry comprises a shell, an air supply system, a plurality of heat source pry reaction chambers and an electric arc exciter,
the upper part of the shell is provided with an air outlet, the lower part of the shell is provided with a plurality of heat source prying reaction chambers, the outer walls of the heat source prying reaction chambers are provided with heat insulation layers, catalytic reaction beds are arranged in the heat source prying reaction chambers, and the upper parts of the heat source prying reaction chambers are provided with oxidation air outlets;
the electric arc exciter is arranged in the shell and is positioned at an oxidation gas outlet of the heat source prying reaction chamber,
the gas supply system comprises an emptying pipe communicated with the coal mine gas extraction system, an emptying adjusting valve is arranged on the emptying pipe, a plurality of branch pipes are arranged at the tail ends of the emptying pipe, the branch pipes are connected with corresponding heat source prying reaction chamber pipelines, and directional oxidation valves are installed on the branch pipes.
The mixing device is a sealed box body, and a pipeline communicated with a natural gas source is arranged on the box body.
The coal mine gas extraction system is characterized by further comprising a safe conveying device, wherein the safe conveying device is arranged between the emptying regulating valve of the emptying pipe and the coal mine gas extraction system and comprises an explosion-proof device, an explosion-suppression device and a water-seal fire-retardant explosion-release device.
The device also comprises an NOx inhibitor which is arranged at the tail end of the emptying pipe and used for mixing gas and air to inhibit the generation of NOx.
The oxidation flame retardant device is a pipeline wound on the branch pipe, and the pipeline is connected with the air pump and used for exchanging heat of gas in the branch pipe.
The front end of the air inlet of the NOX inhibitor is provided with a dehydrator.
The utility model discloses heat source sled, simple structure, the self-consuming energy is low, and area is little is convenient for the moving as a whole, simultaneously the utility model discloses heat source sled need not use other energy to establish oxidation temperature field in advance under normal atmospheric temperature, and does not use heat enrichment equipment, takes out gas with the low concentration more than 5% and takes out and transform into the high temperature hot gas flow that is higher than 900 ℃ in hot sled, and the high temperature gas of production can be used to fields such as heating, electricity generation, refrigeration.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, the low-concentration gas heat source pry comprises a gas supply system, a heat source pry body,
the heat source prying body comprises a shell 1, a plurality of heat source prying reaction chambers 2 and an electric arc exciter 3, an air outlet 11 is formed in the upper portion of the shell 1, the heat source prying reaction chambers 2 are mounted on the lower portion in the shell, a heat insulation layer is arranged on the outer wall of each heat source prying reaction chamber, a catalytic reaction bed 21 is mounted in each heat source prying reaction chamber 2, and an oxidation air outlet 22 is formed in the upper portion of each heat source prying. The arc exciter 3 is arranged in the shell and is positioned at the oxidation gas outlet of the heat source prying reaction chamber.
The gas supply system comprises a vent pipe 4 communicated with the coal mine gas extraction system, a vent regulating valve 41 is arranged on the vent pipe 4, and an explosion-proof device, an explosion-suppressing device and a water seal fire-retarding explosion-releasing device are arranged on a pipeline between the vent regulating valve 41 and the coal mine gas extraction system; the rear side of the emptying regulating valve 41 is connected with a mixing device 42, the mixing device 42 is a sealed box body, a pipeline communicated with a natural gas source is arranged on the box body, when the gas quantity of an extraction system is insufficient, natural gas and the extracted gas can be mixed in time for use, and the stable and reliable operation of a heat source prying heating system is ensured; the rear side pipeline of the mixing device is connected with an NOX inhibitor 43 which is used for mixing gas and air to inhibit the generation of NOX; the air inlet of the NOX suppressor is provided with a dehydrator, the air outlet is connected with a plurality of branch pipes 44 through pipelines, the branch pipes 44 are connected with the corresponding heat source pry reaction chamber 2 through pipelines, and the branch pipes 44 are provided with directional oxidation valves 43.
The device also comprises an oxidation flame retardant device 45 which is a pipeline wound on the branch pipe, and the pipeline is connected with an air pump and used for exchanging heat of gas in the branch pipe. The heat flow of more than or equal to 200 ℃ and possible heat sources are blocked again and returned to the branch pipe. The reaction heat of the low-concentration gas heat source pry is formed into a step working mode, the temperature close to the air inlet end is the lowest, the temperature in the oxidation flame retardant device is not higher than 100 ℃, and the safety of a low-concentration gas inlet pipe system can be ensured.
The principle of the device of the invention is as follows: the method comprises the steps of introducing methane mixed gas with the concentration of more than 4% into a heat source prying reaction chamber at positive pressure (more than 3 kpa), enabling gas to seep to an oxidation gas outlet of the heat source prying reaction chamber through a catalytic bed in the heat source prying reaction chamber, exciting and burning the gas at one time by electric arcs, obtaining an excitation energy source (the excitation state is short in time), starting oxidation reaction, accumulating heat energy, entering a self-maintenance oxidation state to continuously work, and leading out hot air from an air outlet of a shell at negative pressure. The utility model discloses heat source sled methane destroys the rate and is greater than or equal to 99%, and the heat release after the low temperature combustion of catalysis simultaneously is equivalent with the heat release of normal atmospheric temperature oxidation combustion, that is to say can not produce oxynitride.
Claims (6)
1. The utility model provides a low concentration gas heat source sled which characterized in that: comprises a shell, an air supply system, a plurality of heat source prying reaction chambers and an electric arc exciter,
the upper part of the shell is provided with an air outlet, the lower part of the shell is provided with a plurality of heat source prying reaction chambers, the outer walls of the heat source prying reaction chambers are provided with heat insulation layers, catalytic reaction beds are arranged in the heat source prying reaction chambers, and the upper parts of the heat source prying reaction chambers are provided with oxidation air outlets;
the electric arc exciter is arranged in the shell and is positioned at an oxidation gas outlet of the heat source prying reaction chamber,
the gas supply system comprises an emptying pipe communicated with the coal mine gas extraction system, an emptying adjusting valve is arranged on the emptying pipe, a plurality of branch pipes are arranged at the tail ends of the emptying pipe, the branch pipes are connected with corresponding heat source prying reaction chamber pipelines, and directional oxidation valves are installed on the branch pipes.
2. A low-concentration gas heat source skid as set forth in claim 1, wherein: the mixing device is a sealed box body, and a pipeline communicated with a natural gas source is arranged on the box body.
3. A low-concentration gas heat source skid as set forth in claim 1, wherein: the coal mine gas extraction system is characterized by further comprising a safe conveying device, wherein the safe conveying device is arranged between the emptying regulating valve of the emptying pipe and the coal mine gas extraction system and comprises an explosion-proof device, an explosion-suppression device and a water-seal fire-retardant explosion-release device.
4. A low-concentration gas heat source skid as set forth in claim 1, wherein: the device also comprises an NOx inhibitor which is arranged at the tail end of the emptying pipe and used for mixing gas and air to inhibit the generation of NOx.
5. A low-concentration gas heat source skid as set forth in claim 1, wherein: the oxidation flame retardant device is a pipeline wound on the branch pipe, and the pipeline is connected with the air pump and used for exchanging heat of gas in the branch pipe.
6. A low-concentration gas heat source skid as set forth in claim 4, wherein: the front end of the air inlet of the NOX inhibitor is provided with a dehydrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922456272.3U CN211551649U (en) | 2019-12-31 | 2019-12-31 | Low-concentration gas heat source pry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922456272.3U CN211551649U (en) | 2019-12-31 | 2019-12-31 | Low-concentration gas heat source pry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211551649U true CN211551649U (en) | 2020-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922456272.3U Active CN211551649U (en) | 2019-12-31 | 2019-12-31 | Low-concentration gas heat source pry |
Country Status (1)
| Country | Link |
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| CN (1) | CN211551649U (en) |
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2019
- 2019-12-31 CN CN201922456272.3U patent/CN211551649U/en active Active
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