Ventilation air methane combustion treatment device

Abstract

The invention relates to a ventilation air methane combustion treatment device, and belongs to the field of ventilation air methane treatment equipment. Comprising a combustion chamber; the heat storage chamber is communicated with the combustion chamber, and heat storage ceramics are arranged in the heat storage chamber; the first feeding pipeline is communicated with the heat storage chamber, and the first feeding pipeline is used for conveying ventilation air methane to the combustion chamber; the second feeding pipeline is communicated with the combustion chamber and is used for conveying diesel oil to the combustion chamber; the third feeding pipeline is communicated with the combustion chamber and is used for conveying pulverized coal into the combustion chamber; and the smoke exhaust pipeline is communicated with the combustion chamber. According to the ventilation air methane combustion treatment device, the dependence of the ventilation air methane treatment process on high-concentration methane is reduced, coal dust generated during coal mining can be used for continuously treating ventilation air methane, the treatment cost is low, and economic benefits are high.

Description

Technical Field

[0001] The invention belongs to the field of exhaust gas processing equipment and relates to an exhaust gas combustion processing device. Background Art

[0002] In the process of coal mining, the treatment of ventilation gas has always been a technical problem. Ventilation gas refers to the waste gas containing low-concentration methane discharged during the ventilation process of coal mines, and its methane concentration is usually less than 0.3%. Due to its low concentration, ventilation gas is difficult to generate enough heat to maintain its continuous combustion through oxidation combustion under normal conditions. This leads to a large amount of ventilation gas emissions, which not only wastes resources but also pollutes the environment.

[0003] Traditional thermal storage oxidation technology requires a certain methane concentration (usually 0.3% or higher) to achieve self-heating equilibrium combustion. However, the methane concentration of airless gas is much lower than this requirement, making it difficult to directly apply traditional technology to the treatment of airless gas. Although auxiliary fuels such as diesel can be added to increase the combustion temperature and maintain combustion, this method has a high economic cost and is difficult to promote on a large scale.

[0004] At present, a common solution is to mix ventilation gas with high-concentration gas for combustion to increase the overall methane concentration, thereby achieving effective combustion treatment. However, this method relies on the availability of high-concentration gas. If there is no high-concentration gas resource around the ventilation gas in the coal mine, the destruction of ventilation gas cannot be achieved. Therefore, finding a cost-effective ventilation gas treatment technology that does not rely on high-concentration gas has become an urgent problem to be solved. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a fatigue gas combustion processing device, so that the fatigue gas entering the combustion chamber has sufficient heat to maintain continuous combustion of the fatigue gas, so as to achieve the treatment of the fatigue gas.

[0006] In order to achieve the above object, the present invention provides a ventilation gas combustion treatment device, comprising:

[0007] Combustion chamber;

[0008] A heat storage chamber is connected to the combustion chamber, and heat storage ceramics are arranged in the heat storage chamber;

[0009] A first feed pipeline is connected to the heat storage chamber and is used to transport exhaust gas to the combustion chamber;

[0010] a second feed pipeline, connected to the combustion chamber, for delivering diesel to the combustion chamber;

[0011] a third feed pipeline, connected to the combustion chamber, for conveying pulverized coal into the combustion chamber;

[0012] The smoke exhaust pipeline is connected with the combustion chamber.

[0013] Optionally, the heat storage chamber includes a first heat storage chamber and a second heat storage chamber, the first supply pipeline includes a first supply branch and a second supply branch respectively connected to the first heat storage chamber and the second heat storage chamber, the first supply branch is provided with a first control valve, and the second supply branch is provided with a second control valve.

[0014] Optionally, the first feed branch is connected to the side of the heat storage ceramic facing away from the combustion chamber, and the second feed branch is connected to the side of the heat storage ceramic facing away from the combustion chamber.

[0015] Optionally, the smoke exhaust pipeline includes a first smoke exhaust pipeline, the first smoke exhaust pipeline includes a first smoke exhaust branch and a second smoke exhaust branch respectively connected to the first heat storage chamber and the second heat storage chamber, the first smoke exhaust branch is provided with a third control valve, and the second smoke exhaust branch is provided with a fourth control valve.

[0016] Optionally, the first smoke exhaust branch is connected to the side of the heat storage ceramic facing away from the combustion chamber, and the second smoke exhaust branch is connected to the side of the heat storage ceramic facing away from the combustion chamber.

[0017] Optionally, a replaceable filter is provided between the combustion chamber and the heat storage chamber.

[0018] Optionally, the smoke exhaust pipeline includes a second smoke exhaust pipeline, the second smoke exhaust pipeline is connected to the combustion chamber, and a dust collector is arranged in the second smoke exhaust pipeline.

[0019] Optionally, the second feed pipeline includes a third feed branch and a fourth feed branch, the third feed branch is connected to the fourth feed branch, and a burner is connected to the outlet end of the third feed branch located in the combustion chamber, the third feed branch is connected to a diesel tank and a fifth control valve, and the fourth feed branch is connected to a combustion-supporting fan.

[0020] Optionally, the third feed pipeline is connected to an air supply device and a pulverized coal bin.

[0021] Optionally, the first feed pipeline further includes a fifth feed branch, the fifth feed branch is connected to the smoke exhaust pipeline, and a sixth control valve is arranged in the fifth feed branch.

[0022] The beneficial effects of the present invention are:

[0023] The present invention firstly inputs diesel fuel into the combustion chamber through the second feed pipeline for combustion, and the first feed pipeline provides exhaust gas into the combustion chamber through the heat storage chamber for combustion. During this process, the temperature of the heat storage ceramic continues to rise, and the exhaust gas is heated when passing through the heat storage ceramic. When the exhaust gas temperature passing through the heat storage ceramic can meet the self-heating balance combustion of the exhaust gas, the second feed pipeline stops feeding, and the third feed pipeline inputs pulverized coal into the combustion chamber, so that the exhaust gas entering the combustion chamber from the first feed pipeline continues to be burned, and the tail smoke after combustion is discharged through the exhaust pipe.

[0024] It can be seen that the present invention only uses diesel to increase the temperature of the exhaust gas in the early stage. After the temperature of the exhaust gas reaches the standard, coal powder is used to assist combustion. In this way, the dependence of the exhaust gas treatment process on high-concentration gas is reduced, and the coal powder used in coal mining can be used to continuously treat the exhaust gas, with low treatment cost and high economic benefit.

[0025] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0027] Figure 1 This is a piping diagram of a ventilation gas combustion treatment device according to an embodiment of the present invention.

[0028] Reference numerals:

[0029] 100-lack air gas combustion treatment device; 110-combustion chamber; 120-heat storage chamber; 120a-first heat storage chamber; 120b-second heat storage chamber; 121-heat storage ceramic; 130-first feed pipeline; 131-first feed branch; 1311-first control valve; 132-second feed branch; 1321-second control valve; 133-fifth feed branch; 1331-sixth control valve; 140-second feed pipeline; 141-third feed branch; 141a-diesel Oil tank; 141b-fifth control valve; 142-fourth feed branch; 1421-combustion-supporting fan; 143-burner; 150-third feed pipeline; 151-air supply device; 152-coal powder bin; 160-smoke exhaust pipeline; 161-first smoke exhaust pipeline; 1611-first smoke exhaust branch; 1611a-third control valve; 1612-second smoke exhaust branch; 1612a-fourth control valve; 162-second smoke exhaust pipeline; 1621-dust collector; 170-filter. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] See also Figure 1 The present invention provides a ventilation gas combustion treatment device 100, which includes: a combustion chamber 110, a heat storage chamber 120, a first feed pipeline 130, a second feed pipeline 140, a third feed pipeline 150 and a smoke exhaust pipeline 160.

[0034] The heat storage chamber 120 is connected to the combustion chamber 110, and a heat storage ceramic 121 is arranged in the heat storage chamber 120; the first feed pipeline 130 is connected to the heat storage chamber 120, and the first feed pipeline 130 is used to transport exhaust gas to the combustion chamber 110; the second feed pipeline 140 is connected to the combustion chamber 110, and is used to transport diesel to the combustion chamber 110; the third feed pipeline 150 is connected to the combustion chamber 110, and is used to transport coal powder into the combustion chamber 110; the smoke exhaust pipeline 160 is connected to the combustion chamber 110.

[0035] The exhaust gas combustion treatment device 100 of the present invention first inputs diesel fuel into the combustion chamber 110 through the second feed pipeline 140 for combustion, and the first feed pipeline 130 provides exhaust gas into the combustion chamber 110 through the heat storage chamber 120 for combustion. During this process, the temperature of the heat storage ceramic 121 continues to rise, and the exhaust gas is heated when passing through the heat storage ceramic 121. When the exhaust gas temperature passing through the heat storage ceramic 121 can meet the self-heating balance combustion of the exhaust gas. The second feed pipeline 140 stops feeding, and the third feed pipeline 150 inputs coal powder into the combustion chamber 110, so that the exhaust gas entering the combustion chamber 110 from the first feed pipeline 130 is continuously burned and treated, and the tail smoke after combustion is discharged through the smoke exhaust pipeline 160. In this way, the dependence of the exhaust gas treatment process on high-concentration gas is reduced, and the coal powder during coal mining can be used to continuously treat the exhaust gas, with low treatment cost and high economic benefits.

[0036] In some possible embodiments, the heat storage chamber 120 includes a first heat storage chamber 120a and a second heat storage chamber 120b, the first feed pipeline 130 includes a first feed branch 131 and a second feed branch 132, the first feed branch 131 is connected to the first heat storage chamber 120a, and the outlet end of the first feed branch 131 is located on the side of the heat storage ceramic 121 away from the combustion chamber 110, the second feed branch 132 is connected to the second heat storage chamber 120b, and the outlet end of the second feed branch 132 is located on the side of the heat storage ceramic 121 away from the combustion chamber 110, the first feed branch 131 is provided with a first control valve 1311, and the second feed branch 132 is provided with a second control valve 1321.

[0037] By providing the first heat storage chamber 120a and the second heat storage chamber 120b, when the first supply pipeline 130 supplies exhaust gas to the combustion chamber 110 through the first supply branch 131 (or the second supply branch 132), the second supply branch 132 (or the first supply branch 131) can be in a closed state, so that when the heat storage ceramics 121 in one heat storage chamber 120 are in a state of heating exhaust gas, the heat storage ceramics 121 in the other heat storage chamber 120 can be in a heating state. The first supply branch 131 and the second supply branch 132 periodically switch to supply exhaust gas to the combustion chamber 110 (that is, through the control of the first control valve 1311 and the second control valve 1321, when one of the first supply branch 131 and the second supply branch 132 is in a supplying state, the other is in a closed state). In this way, it can be ensured that the exhaust gas can be sufficiently heated when passing through the heat storage ceramic 121, so that the temperature of the exhaust gas can reach the temperature of self-heating equilibrium combustion of the exhaust gas, thereby improving the reliability of the equipment.

[0038] In some possible embodiments, the smoke exhaust pipeline 160 includes a first smoke exhaust pipeline 161, the first smoke exhaust pipeline 161 includes a first smoke exhaust branch 1611 and a second smoke exhaust branch 1612, the first smoke exhaust branch 1611 is connected to the first heat storage chamber 120a, the first smoke exhaust branch 1611 is located on the side of the heat storage ceramic 121 away from the combustion chamber 110, the second smoke exhaust branch 1612 is connected to the second heat storage chamber 120b, the second smoke exhaust branch 1612 is located on the side of the heat storage ceramic 121 away from the combustion chamber 110, the first smoke exhaust branch 1611 is provided with a third control valve 1611a, and the second smoke exhaust branch 1612 is provided with a fourth control valve 1612a.

[0039] The tail smoke after the exhaust gas is burned is discharged through the heat storage ceramic 121 by the first exhaust pipe 161. The tail smoke in the combustion chamber 110 has a high temperature, and when passing through the heat storage ceramic 121, the heat storage ceramic 121 can be further heated to improve the heating effect on the exhaust gas.

[0040] Optionally, when one of the first feed branch 131 and the second feed branch 132 of the first feed pipeline 130 is feeding, one of the first smoke exhaust branch 1611 and the second smoke exhaust branch 1612 of the first smoke exhaust pipeline 161 that do not correspond to the first feed branch 131 and the second feed branch 132 is opened for smoke exhaust, and the other is closed. For example, when the first feed branch 131 inputs exhaust gas into the first heat storage chamber 120a, the second smoke exhaust branch 1612 discharges tail smoke from the second heat storage chamber 120b, or when the second feed branch 132 inputs exhaust gas into the second heat storage chamber 120b, the first smoke exhaust branch 1611 discharges tail smoke from the first heat storage chamber 120a, so as to ensure the heat storage effect of the heat storage ceramic 121.

[0041] In some possible implementations, a replaceable filter screen 170 is provided between the combustion chamber 110 and the heat storage chamber 120. The carbon residue generated when the coal powder is burned is filtered through the filter screen 170 to prevent the carbon residue from blocking the air flow channel on the heat storage ceramic 121, thereby improving the reliability of the equipment and achieving continuous and stable operation of the device. When too much carbon residue is accumulated on the filter screen 170, the filter screen 170 can be replaced and cleaned.

[0042] It can be understood that the filter 170 can be set in the combustion chamber 110 by pulling out. When replacing, it is only necessary to pull out the old filter 170 from the replacement port of the combustion chamber 110 and replace it with a new filter 170.

[0043] In some possible implementations, the smoke exhaust pipeline 160 includes a second smoke exhaust pipeline 162, which is connected to the combustion chamber 110, and a dust collector 1621 is provided in the second smoke exhaust pipeline 162. In this way, the high-temperature tail smoke after the exhaust gas in the combustion chamber 110 is burned can be discharged through the second smoke exhaust pipeline 162, and after the dust removal treatment of the dust collector 1621, the high-temperature tail smoke can be used for waste heat treatment, thereby improving the economic benefits of the equipment.

[0044] In some possible embodiments, the second feed pipeline 140 includes a third feed branch 141 and a fourth feed branch 142, the third feed branch 141 is connected to the fourth feed branch 142, and the third feed branch 141 is connected to a burner 143 at the outlet end of the combustion chamber 110, the third feed branch 141 is connected to a diesel tank 141a and a fifth control valve 141b, and the fourth feed branch 142 is connected to a combustion-supporting fan 1421.

[0045] In the early stage, diesel fuel is used to keep the low-temperature exhaust gas in the combustion chamber 110 burning, so that the heat storage ceramic 121 can be stably heated, thereby improving the reliability of the equipment.

[0046] In some possible implementations, the third feed pipeline 150 is connected to an air supply device 151 and a pulverized coal bin 152. The air supply device 151 can spray air into the pulverized coal bin 152. When high-speed air passes through the pulverized coal bin 152, negative pressure is formed at the bottom of the pulverized coal bin 152, and pulverized coal is transported to the combustion chamber 110. By controlling the transport airflow of the air supply device 151 and the flow rate of the airflow, the amount of pulverized coal input can be accurately controlled to improve the combustion effect of the exhaust gas.

[0047] In some possible implementations, the first feed pipeline 130 further includes a fifth feed branch 133, the fifth feed branch 133 is connected to the smoke exhaust pipeline 160, and a sixth control valve 1331 is disposed in the fifth feed branch 133. In this way, when the first feed branch 131 and the second feed branch 132 are blocked, the exhaust gas input from the first feed pipeline 130 can be discharged through the fifth feed branch 133, thereby avoiding safety accidents and improving the safety of the device.

[0048] The use principle of the exhaust gas combustion treatment device 100 of the present invention can be:

[0049] The fifth control valve 141b is opened, the second feed pipeline 140 inputs diesel into the combustion chamber 110, the first control valve 1311 (or the second control valve 1321) and the third control valve 1611a (or the fourth control valve 1612a) are opened, the second control valve 1321 (or the first control valve 1311), the fourth control valve 1612a (or the third control valve 1611a) and the sixth control valve 1331, the exhaust gas is transported into the combustion chamber 110, and the burner 143 ignites the diesel to make the exhaust gas continue to burn. Among them, the first control valve 1311 and the second control valve 1321, the third control valve 1611a and the fourth control valve 1612a are switched periodically to ensure the heating effect of the heat storage ceramic 121.

[0050] When the temperature of the heat storage ceramic 121 is high enough, the fifth control valve 141b is closed. The air supply device 151 of the third feed pipeline 150 supplies coal powder into the combustion chamber 110 so that the exhaust gas can continue to burn.

[0051] After the exhaust gas is burned, part of the high-temperature tail smoke is used for waste heat treatment after being dusted by the dust collector 1621 from the second smoke exhaust pipe 162, and the other part of the tail smoke heats the heat storage ceramic 121 and is discharged from the first smoke exhaust pipe 161.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A ventilation gas combustion treatment device, characterized in that: include: A combustion chamber (110); A heat storage chamber (120) is communicated with the combustion chamber (110), and a heat storage ceramic (121) is arranged in the heat storage chamber (120); A first supply pipeline (130) is communicated with the heat storage chamber (120) and is used to transport exhaust gas to the combustion chamber (110); a second supply pipeline (140), which is in communication with the combustion chamber (110) and is used to deliver diesel fuel to the combustion chamber (110); a third feed pipeline (150), which is in communication with the combustion chamber (110) and is used to transport pulverized coal into the combustion chamber (110); A smoke exhaust pipeline (160) is in communication with the combustion chamber (110).

2. The exhaust gas combustion treatment device according to claim 1 is characterized in that: The heat storage chamber (120) comprises a first heat storage chamber (120a) and a second heat storage chamber (120b); the first supply pipeline (130) comprises a first supply branch (131) and a second supply branch (132) respectively connected to the first heat storage chamber (120a) and the second heat storage chamber (120b); The first supply branch (131) is provided with a first control valve (1311), and the second supply branch (132) is provided with a second control valve (1321).

3. The exhaust gas combustion treatment device according to claim 2 is characterized in that: The first feed branch (131) is connected to a side of the heat storage ceramic (121) facing away from the combustion chamber (110), and the second feed branch (132) is connected to a side of the heat storage ceramic (121) facing away from the combustion chamber (110).

4. The exhaust gas combustion treatment device according to claim 2, characterized in that: The smoke exhaust pipeline (160) comprises a first smoke exhaust pipeline (161), and the first smoke exhaust pipeline (161) comprises a first smoke exhaust branch (1611) and a second smoke exhaust branch (1612) respectively connected to the first heat storage chamber (120a) and the second heat storage chamber (120b); The first smoke exhaust branch (1611) is provided with a third control valve (1611a), and the second smoke exhaust branch (1612) is provided with a fourth control valve (1612a).

5. The exhaust gas combustion treatment device according to claim 4 is characterized in that: The first smoke exhaust branch (1611) is connected to a side of the heat storage ceramic (121) facing away from the combustion chamber (110), and the second smoke exhaust branch (1612) is connected to a side of the heat storage ceramic (121) facing away from the combustion chamber (110).

6. The exhaust gas combustion treatment device according to claim 1, characterized in that: A replaceable filter screen (170) is provided between the combustion chamber (110) and the heat storage chamber (120).

7. The exhaust gas combustion treatment device according to claim 1, characterized in that: The smoke exhaust pipeline (160) comprises a second smoke exhaust pipeline (162), the second smoke exhaust pipeline (162) is in communication with the combustion chamber (110), and a dust collector (1621) is arranged in the second smoke exhaust pipeline (162).

8. The exhaust gas combustion treatment device according to claim 1, characterized in that: The second feed pipeline (140) comprises a third feed branch (141) and a fourth feed branch (142), the third feed branch (141) being in communication with the fourth feed branch (142), and a burner (143) is connected to the outlet end of the third feed branch (141) located at the combustion chamber (110), The third feed branch (141) is connected to a diesel tank (141a) and a fifth control valve (141b), and the fourth feed branch (142) is connected to a combustion-supporting fan (1421).

9. The exhaust gas combustion treatment device according to claim 1, characterized in that: The third material supply pipeline (150) is connected to an air supply device (151) and a pulverized coal bin (152).

10. The exhaust gas combustion treatment device according to claim 3, characterized in that: The first feed pipeline (130) further comprises a fifth feed branch (133), the fifth feed branch (133) being in communication with the smoke exhaust pipeline (160), and a sixth control valve (1331) being arranged in the fifth feed branch (133).

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