A coal-based gas purification component

Abstract

The present invention relates to the field of mineral collection technology, and discloses a coal-based gas purification component, comprising: a dust removal bin, comprising a dust removal bin body and an atomizing device disposed in the dust removal bin body; a drying bin, connected to the dust removal bin, the drying bin comprising a drying bin body and a drying material disposed in the drying bin body; the coal-based gas flows through the dust removal bin and the drying bin in sequence, the dust in the coal-based gas combines with the liquid spray sprayed by the atomizing device and remains in the dust removal bin body, and the moisture in the coal-based gas combines with the drying material and remains in the drying bin body. Based on the above scheme, the present invention can achieve a purification effect on the coal-based gas, effectively remove dust in the coal-based gas, and the humidity of the coal-based gas is also low. When flowing into a flame arrester, a cylinder of a coal-based gas generator, etc., the wear on the equipment is less. Since the humidity of the coal-based gas is lower, the combustion effect of the coal-based gas is also better, which can improve the utilization efficiency of the coal-based gas.

Description

Technical Field

[0001] The present invention relates to the technical field of mineral collection, and in particular to a coal-based gas purification component. Background Art

[0002] Coal-bearing gas refers to all natural gas with methane as the main component that is found in coal-bearing strata and generated from coal-bearing hydrocarbon parent materials during the geological evolution process. The utilization of coal-bearing gas is an important part of establishing a clean energy industry system.

[0003] However, during the extraction process, coal-bearing gas is often accompanied by a large amount of dust. This dust can cause wear and tear on equipment such as flame arresters and cylinders of coal-bearing gas generators, affecting the efficiency of coal-bearing gas utilization. Therefore, it is necessary to purify the coal-bearing gas to reduce damage to equipment and improve its utilization efficiency. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a coal-based gas purification component to solve the problem that the dust content of coal-based gas extracted in the existing solution is too high, which easily leads to equipment damage and low coal-based gas utilization efficiency.

[0005] The present invention provides a coal-based gas purification component, comprising:

[0006] The dust removal bin comprises a dust removal bin body and an atomizing device arranged in the dust removal bin body;

[0007] A drying bin connected to the dust removal bin, the drying bin comprising a drying bin body and drying materials arranged in the drying bin body;

[0008] The coal-based gas flows through the dust removal bin and the drying bin in sequence, the dust in the coal-based gas combines with the liquid spray sprayed by the atomizing device and remains in the dust removal bin body, and the moisture in the coal-based gas combines with the drying material and remains in the drying bin body;

[0009] The dust removal bin further includes a filtering device disposed within the dust removal bin body;

[0010] The first air inlet and the first air outlet corresponding to the dust removal bin are arranged vertically up and down, and the coal-based gas flows through the dust removal bin from bottom to top;

[0011] The filtering device is arranged on a side of the atomizing device facing the first air inlet, and particles formed by the combination of the dust and the liquid spray are retained on the filtering device due to the filtering effect of the filtering device.

[0012] Optionally, the filtering device includes multiple layers of mesh grids; the atomizing device includes multiple atomizers;

[0013] Along the direction from the first air inlet to the first air outlet, the mesh grids and the atomizers are alternately arranged.

[0014] Optionally, along the direction from the first air inlet to the first air outlet, the aperture size of the mesh grid gradually decreases.

[0015] Optionally, a waste liquid outlet is provided at the bottom of the dust removal bin;

[0016] The moisture in the particles is discharged from the waste liquid outlet based on the filtering effect of the filtering device.

[0017] Optionally, a waste liquid purification device is also included;

[0018] The waste liquid outlet is connected to the water inlet of the waste liquid purification device, and the water outlet of the waste liquid purification device is connected to the atomization device.

[0019] Optionally, the waste liquid purification device includes a plurality of waste liquid sedimentation tanks connected in sequence;

[0020] The adjacent waste liquid sedimentation tanks are connected via a drainage pipe arranged at the top of the waste liquid sedimentation tank.

[0021] Optionally, the drying chamber further comprises a ventilation device disposed within the drying chamber body;

[0022] The second air inlet and the second air outlet corresponding to the drying bin are arranged vertically up and down, and the coal-based gas flows through the drying bin from bottom to top;

[0023] The drying material is laid on the side of the air permeable device facing the second air outlet.

[0024] Optionally, the breathable device comprises a multi-layer breathable mesh.

[0025] Optionally, the second gas outlet is connected to a coal-based gas generator;

[0026] The coal-based gas purification component also includes a waste heat utilization device;

[0027] The waste heat utilization device is connected to the ventilation device, and is used to transfer the heat generated by the coal-based gas generator to the ventilation device. The ventilation device is also used to heat the drying material.

[0028] The embodiments of the present invention have the following technical effects:

[0029] Under the action of the coal-based gas purification component provided by the present invention, the extracted coal-based gas flows through the dust removal bin and the drying bin in sequence. The atomizing device in the dust removal bin can spray liquid spray to combine with the dust in the coal-based gas to form particles with heavier weight, thereby leaving the dust in the dust removal bin body. The coal-based gas flowing out of the dust removal bin has achieved the effect of dust removal. Furthermore, the moisture in the coal-based gas can be absorbed by the drying material in the drying bin to reduce the humidity of the coal-based gas. In summary, under the action of the coal-based gas purification component, the dust in the coal-based gas can be effectively removed, and the humidity of the coal-based gas is also low. When it flows into the flame arrester, the cylinder of the coal-based gas generator, etc., the wear and tear on the equipment is smaller. Since the humidity of the coal-based gas is lower, the combustion effect of the coal-based gas is also better, which can improve the utilization efficiency of the coal-based gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 A schematic structural diagram of a coal-based gas purification component provided in an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the structure of a dust removal bin provided in an embodiment of the present invention;

[0033] Figure 3 A schematic diagram of another dust removal bin structure provided by an embodiment of the present invention;

[0034] Figure 4 A schematic structural diagram of a waste liquid purification device provided by an embodiment of the present invention;

[0035] Figure 5 A schematic diagram of the structure of a drying chamber provided in an embodiment of the present invention;

[0036] Figure 6 A schematic diagram of a dust content curve provided by an embodiment of the present invention;

[0037] Figure 7 A schematic diagram of a humidity curve provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention are described clearly and completely below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0039] Figure 1 A schematic structural diagram of a coal-based gas purification component provided in an embodiment of the present invention includes:

[0040] The dust removal bin 100 includes a dust removal bin body 101 and an atomizing device 102 disposed in the dust removal bin body 101 .

[0041] The drying bin 200 is connected to the dust removal bin 100 , and includes a drying bin body 201 and drying materials 202 disposed in the drying bin body 201 .

[0042] The coal-based gas 000 flows through the dust removal bin 100 and the drying bin 200 in sequence. The dust in the coal-based gas 000 combines with the liquid spray sprayed by the atomizing device 102 and remains in the dust removal bin body 101. The moisture in the coal-based gas 000 combines with the drying material 202 and remains in the drying bin body 201.

[0043] like Figure 1 As shown, the coal-based gas purification component in the embodiment of the present invention can be directly connected to the pipeline for extracting coal-based gas, that is, the coal-based gas 000 directly enters the coal-based gas purification component after being extracted from the mine, and then enters the flame arrester (not shown), coal-based gas generator 300 and other equipment after being purified by the coal-based gas purification component.

[0044] The atomizing device 102 represents a functional device capable of spraying liquid spray, such as a fine water mist generator, etc. The composition of the liquid spray can be water, or other liquids that can achieve a combination effect with dust, which will not be described in detail here. Under the action of the atomizing device 102, the dust removal bin 101 can be filled with liquid spray, and the coal-based gas 000 passing through the dust removal bin 101 will be combined with the liquid spray. After the dust in the coal-based gas 000 is combined with the liquid spray, its weight is further increased, and it can be relatively easily left in the dust removal bin 101. Therefore, the dust in the coal-based gas 000 flowing through the dust removal bin 100 can be separated from the coal-based gas 000, and the coal-based gas 000 entering the drying bin 200 does not contain dust, or the dust content is reduced. Among them, the atomizing device 102 can be arranged in a ring or other shape to increase the spraying area of ​​the water mist and combine the dust to a greater extent.

[0045] However, while the coal-based gas 000 flowing through the dust removal bin 100 has achieved dust removal, the moisture content in the coal-based gas 000 will increase. Furthermore, the coal-based gas 000 extracted from the mine may also contain a certain amount of moisture. Coal-based gas 000 with high humidity is still not conducive to combustion, affecting the efficiency of coal-based gas 000. Furthermore, the moisture contained in the coal-based gas 000 can cause rust and increased wear on equipment. Therefore, the embodiment of the present invention provides a drying bin 200 to dry the coal-based gas 000 and remove moisture from it.

[0046] Specifically, the desiccant 202 is a functional material capable of absorbing moisture in the coal-based gas 000, such as a molecular sieve. Under the action of the desiccant 202, the coal-based gas 000 flowing through the drying chamber 201 can fully contact the desiccant 202, thereby removing moisture from the coal-based gas 000.

[0047] The coal-based gas 000 flowing out of the drying chamber 200 contains neither dust nor moisture. Therefore, after flowing into the flame arrester and the coal-based gas generator 300, it will not cause damage to the above-mentioned equipment, and the utilization efficiency of the coal-based gas 000 is higher.

[0048] Figure 2 A schematic diagram of a dust removal bin structure provided by an embodiment of the present invention. In some embodiments, the dust removal bin 100 further includes a filtering device 103 disposed within the dust removal bin body 101 .

[0049] The first air inlet 1011 and the first air outlet 1012 corresponding to the dust removal bin body 101 are arranged vertically up and down, and the coal-based gas flows through the dust removal bin body 101 from bottom to top.

[0050] The filter device 103 is disposed on the side of the atomizing device 102 facing the first air inlet 1011 . Particles formed by the combination of dust and liquid spray are retained on the filter device 103 due to the filtering effect of the filter device 103 .

[0051] like Figure 2 As shown, the filter device 103 represents a functional device that can achieve a filtering effect, can pass through coal-based gas, can collect particles formed by dust and liquid spray, and can filter excess water in the particles, such as a filter screen, etc.

[0052] In the vertical direction, the coal-based gas enters the dust removal bin 101 from the first air inlet 1011 provided at the bottom. After passing through the filter 103 (some dust in the coal-based gas may be directly filtered by the filter 103), the dust combines with the liquid spray to form heavier particles, which then fall onto the filter 103. It should be noted that in the embodiments of the present invention, the descriptions of "up" and "down" involve multiple times. Unless otherwise specified, "up" and "down" refer to up and down in the vertical direction.

[0053] The side wall of the first air inlet 1011 inside the dust removal bin 101 can be provided with a plurality of regular or irregular openings to uniformly distribute the coal-based gas into the dust removal bin 101. Since the main component of the coal-based gas is methane, its density is lower than that of air and it can relatively easily rise from the bottom to the top of the dust removal bin 101 and eventually be discharged from the dust removal bin 101. In addition, the openings provided on the side wall of the air inlet pipe can be oriented vertically upward to impart an initial velocity to the coal-based gas in the vertically upward direction, thereby making it easier for the coal-based gas to flow upward.

[0054] Figure 2 The dust removal bin 100 may also include a demister 104 disposed within the dust removal bin body 101. Specifically, the demister 104 represents a functional device capable of absorbing water mist in the coal-based gas. The demister 104 may be disposed between the first gas outlet 1012 and the atomizing device 102. Before the coal-based gas flows out of the dust removal bin body 101, it first passes through the demister 104 to remove most of the water in the coal-based gas. In addition, a demister may also be disposed within the drying bin body. Similar to the dust removal bin body, the demister may be disposed between the drying material within the drying bin body and the gas outlet of the drying bin body. Its function is similar to that of the demister within the dust removal bin body and will not be described in detail here.

[0055] Continue reading Figure 2 In some embodiments, the coal-based gas purification component may further include a harmful gas absorption device 105 disposed at the first gas outlet 1012 , and the harmful gas absorption device 105 is used to absorb part of the harmful gas in the coal-based gas.

[0056] In some embodiments, a spiral gas outlet duct (not shown) can be provided at the first gas outlet 1012 to slow down the outflow rate of the coal-based gas, prevent the coal-based gas from entering the dust removal bin 101 and being discharged directly from the first gas outlet 1012, increase the contact time between the coal-based gas and the liquid spray, and thereby achieve a better dust removal effect.

[0057] Figure 3 This is another schematic diagram of a dust removal bin structure provided by an embodiment of the present invention. In some embodiments, the filter device 103 includes multiple layers of mesh grids 1031 . The atomization device 102 includes multiple atomizers 1021 .

[0058] Along the direction from the first air inlet 1011 to the first air outlet 1012 , the mesh grids 1031 and the atomizers 1021 are alternately arranged.

[0059] like Figure 3As shown, in order to achieve a better dust removal effect, multiple layers of mesh grids 1031 and multiple atomizers 1021 can be provided. The mesh grids 1031 have the same or similar functions as the filter screen in the above embodiment, that is, they are functional devices that can not only pass coal-based gas, but also collect particles formed by the combination of dust and liquid spray, and filter excess water in the particles. The atomizer 1021 can be the fine water mist generator in the above embodiment, etc. Figure 3 In the figure, only the arrangement of four layers of mesh grids 1031 and four atomizers 1021 is taken as an example for description.

[0060] The coal-based gas enters the dust removal bin 101 in the following order: mesh grid 1031, atomizer 1021, mesh grid 1031, atomizer 1021, mesh grid 1031, atomizer 1021, mesh grid 1031, atomizer 1021, mesh grid 1031, atomizer 1021. That is, the coal-based gas undergoes four dust removal processes.

[0061] By providing multiple layers of mesh grids 1031 and multiple atomizers 1021 , a better dust removal effect can be achieved.

[0062] In some embodiments, the aperture size of the mesh grid gradually decreases along the direction from the first air inlet to the first air outlet.

[0063] Specifically, borrowing Figure 3 From bottom to top, dust particles combine with liquid spray to form particles that fall onto mesh grid 1031. Larger dust particles are more likely to combine with liquid spray to form particles that fall onto mesh grid 1031. Smaller dust particles are more likely to fail to combine with liquid spray to form particles and may pass through mesh grid 1031. Furthermore, even if some smaller dust particles combine with liquid spray to form particles, they may still pass through mesh grid 1031 due to their small size and high gas flow rate. Providing mesh grids 1031 with gradually decreasing pore sizes helps filter out even smaller particles. Furthermore, providing only one layer of mesh grids 1031 with smaller pore sizes can easily clog mesh grid 1031, preventing dust removal. The mesh grid 1031 with a larger aperture size is set at the bottom, which can achieve the dust removal effect and is not easy to get blocked. The mesh grid 1031 with a smaller aperture size is set at the top, which can filter smaller particles, and because it filters out fewer particles, it is not easy to get blocked.

[0064] Continue reading Figure 2 In some embodiments, a waste liquid outlet 1013 is provided at the bottom of the dust removal bin body 101 .

[0065] The moisture in the particles is discharged from the waste liquid outlet 1013 based on the filtering effect of the filtering device 103 .

[0066] Specifically, the particles formed by the combination of dust and liquid spray fall onto the filter device 103. If the particles are relatively wet, the liquid (e.g., water) contained therein may fall from the filter device 103 and ultimately land at the bottom of the dust removal bin 101. The bottom of the dust removal bin 101 may be funnel-shaped, and waste liquid may be discharged through the waste liquid outlet 1013 to prevent excess water in the dust removal bin 101. The waste liquid discharged from the waste liquid outlet 1013 may be purified and recycled.

[0067] Continue reading Figure 2 In some embodiments, an anti-blocking device 1014 may be further provided at the waste liquid outlet 1013. Most of the liquid discharged from the waste liquid outlet 1013 is waste liquid, but there is still a substance with high viscosity (similar to sludge) formed by the combination of some dust and liquid spray, which may block the waste liquid outlet 1013. Therefore, an anti-blocking device 1014 is provided in the embodiment of the present invention to alleviate the problem of blockage of the waste liquid outlet 1013. Specifically, the anti-blocking device 1014 can be a chopping knife, which can be provided at the side wall of the pipe at the waste liquid outlet 1013, and an openable chopping cut can be provided at the side wall. The chopping knife can be extended from the chopping cut into the pipe at the waste liquid outlet 1013 to cut off the blocked substance to achieve the purpose of unblocking.

[0068] Continue reading Figure 1 In some embodiments, a waste liquid purification device 106 is also included.

[0069] The waste liquid outlet 1013 is connected to the water inlet of the waste liquid purification device 106 , and the water outlet of the waste liquid purification device 106 is connected to the atomization device 102 .

[0070] As described in the above embodiment, part of the waste liquid in the dust removal bin 101 (hereinafter, liquid spray is used as water as an example) can fall to the bottom of the dust removal bin 101 and flow out from the waste liquid outlet 1013. This part of the waste liquid can still be recycled. Specifically, the main components of the waste liquid are only dust and water. Therefore, after the dust is filtered out by the waste liquid purification device 106, the remaining water can be circulated to the atomization device 102 to repeatedly participate in dust removal. Figure 1 As shown, a first extraction pump 1071 can be set between the waste liquid outlet 1013 and the waste liquid purification device 106, and a second extraction pump 1072 can be set between the waste liquid purification device 106 and the atomization device 102. The first extraction pump 1071 is used to extract the waste liquid from the waste liquid outlet 1013 to the waste liquid purification device 106, and the second extraction pump 1072 is used to extract the clean liquid after purification to the atomization device 102.

[0071] Based on the above solution, the embodiment of the present invention can reduce the waste of water resources.

[0072] Figure 4A schematic diagram of the structure of a waste liquid purification device provided in an embodiment of the present invention. In some embodiments, the waste liquid purification device 106 includes a plurality of waste liquid sedimentation tanks 1061 connected in sequence.

[0073] Adjacent waste liquid sedimentation tanks are connected via a drainage pipe 1062 disposed at the top of the waste liquid sedimentation tank.

[0074] like Figure 4 As shown, Figure 4 The water inlet of the waste liquid purification device 106 is shown as first water inlet 1063, and the water outlet of the waste liquid purification device 106 is shown as first water outlet 1064. First water inlet 1063 is connected to waste liquid outlet 1013, and first water outlet 1064 is connected to atomization device 102. After the waste liquid flows out through waste liquid outlet 1013, it enters the waste liquid sedimentation tank. Because dust is insoluble in water and its density is greater than that of water, when it enters the waste liquid sedimentation tank and the water flow rate is slow (or close to zero), the dust will settle to the bottom of the waste liquid sedimentation tank. Figure 4 The figure illustrates four sequentially connected waste liquid sedimentation tanks A, B, C, and D. Adjacent waste liquid sedimentation tanks are connected via drainage pipes disposed at the tops of the waste liquid sedimentation tanks. Waste liquid first enters tank A for sedimentation. When the waste liquid reaches a certain water level, it is drained into tank B via the drainage pipe between A and B for further sedimentation. At this point, most of the dust in the waste liquid has already settled in tank A. After the waste liquid in tank B reaches a certain water level, it is drained into tank C via the drainage pipe between B and C for further sedimentation. At this point, most of the remaining dust in the waste liquid has already settled in tank B. After the waste liquid in tank C reaches a certain water level, it is drained into tank D via the drainage pipe between C and D for further sedimentation. At this point, most of the remaining dust in the waste liquid has already settled in tank C. Through the sedimentation in the four sedimentation tanks, most of the dust in the waste liquid has been precipitated, and the waste liquid in tank D can meet the standard for recycling to the atomization device 102 for dust removal.

[0075] above Figure 4 This is only one embodiment of the waste liquid purification device 106. In some other embodiments, any other possible methods can be used to achieve the purpose of purifying the waste liquid, which will not be elaborated here.

[0076] Continue reading Figure 1 In some embodiments, the drying chamber 200 further includes a ventilation device 203 disposed within the drying chamber body 201 .

[0077] The second air inlet 2011 and the second air outlet 2012 corresponding to the drying bin body 201 are vertically arranged up and down, and the coal-based gas 000 flows through the drying bin body 201 from bottom to top.

[0078] The drying material 202 is laid on the side of the air permeable device 203 facing the second air outlet 2012 .

[0079] Specifically, it has been explained in the above embodiments that after the dust removal function of the dust removal bin 100, the dust in the coal-based gas 000 is removed, but based on the working principle of the dust removal bin 100, the coal-based gas 000 contains a large amount of water, and the coal-based gas 000 extracted from the mine may also contain a large amount of water itself.

[0080] During the process of coal-based gas 000 passing through the drying chamber 200, the drying material 202 in the drying chamber body 201 will absorb the moisture in the coal-based gas 000. However, the contact area between the drying material 202 and the coal-based gas 000 is too small, which will affect the drying effect. Therefore, in the embodiment of the present invention, a ventilation device 203 is provided. The ventilation device 203 is a planar structure as a whole. The plane on which the ventilation device 203 is located can be perpendicular to the flow direction of the coal-based gas in the drying chamber body 201, or can be described as perpendicular to the second air inlet 2011 and pointing to the second air outlet 2012. The ventilation holes are provided on the surface of the ventilation device 203, so that the ventilation device 203 presents a mesh-like structure. Under this structure, the drying material 202 is laid on the surface of the ventilation device 203 facing the second air outlet 2012 and will not fall from the ventilation device 203. In addition, the coal-based gas 000 can pass through the ventilation holes of the ventilation device 203.

[0081] Based on the above solution, since the contact area between the drying material 202 and the coal-based gas is large enough, a better drying effect can be achieved.

[0082] Figure 5 A schematic diagram of a drying chamber structure provided by an embodiment of the present invention. In some embodiments, the ventilation device 203 includes a multi-layered ventilation mesh 2031.

[0083] like Figure 5 As shown, the breathable device 203 can be composed of multiple layers of breathable mesh 2031. Figure 5 The figure shows 11 layers of air permeable mesh 2031, and drying material (not shown) is laid on the surface of each layer of air permeable mesh 2031. Thus, the coal-based gas can be dried multiple times during the process of passing through the drying chamber 201, further reducing the moisture content in the coal-based gas.

[0084] Continue reading Figure 1 In some embodiments, the gas outlet of the drying chamber 201 is connected to the coal-based gas generator 300 .

[0085] The coal-based gas purification component also includes a waste heat utilization device 400 .

[0086] The waste heat utilization device 400 is connected to the ventilation device 203 . The waste heat utilization device 400 is used to transfer the heat generated by the coal-based gas generator 300 to the ventilation device 203 . The ventilation device 203 is also used to heat the drying material 202 .

[0087] Specifically, the coal-based gas 000 after dust removal and drying can be used for power generation. In the process of burning coal-based gas to generate electricity, the coal-based gas generator 300 will not only directly generate electricity, but also produce some waste heat that cannot be directly used for power generation.

[0088] This embodiment of the present invention can include a waste heat utilization device 400 to transfer the heat (i.e., waste heat) generated by the coal-based gas generator 300 to the ventilation device 203. During the moisture absorption process, the drying material 202 (e.g., molecular sieve, etc.) often needs to be heated to accelerate the reaction process. Within at least a certain temperature range, the higher the temperature, the faster the reaction and the better the reaction effect, effectively achieving better moisture absorption. Therefore, this embodiment can further improve the drying effect of the coal-based gas 000 and reduce the water content in the coal-based gas 000.

[0089] In the embodiment of the present invention, the purpose of providing the waste heat utilization device 400 is not only to improve the drying effect of the coal-based gas 000, but also to improve the drying effect of the coal-based gas 000 without expending a large amount of energy. Under the premise of a certain amount of waste heat from the coal-based gas generator 300, if the heat in the drying chamber 201 is lost at a relatively high rate, the drying material 202 may be insufficiently heated, react too slowly, or even fail to react fully, thereby deteriorating the drying effect of the coal-based gas 000. If the heat input is further increased, additional heating devices may be required, resulting in unnecessary energy waste.

[0090] Therefore, in this embodiment of the present invention, thermal insulation material (not shown) can be provided on the outer or inner surface of the drying chamber 201 to prevent heat loss. If the rate of heat loss within the drying chamber 201 is slow, the waste heat utilization device 400 can be used to maximize the temperature of the ventilation device 203, effectively increasing the temperature of the drying material 202 as much as possible. If the temperature of the drying material 202 is too high, the waste heat utilization device 400 can simply be controlled to stop transferring heat to the ventilation device 203, eliminating the need for significant energy waste.

[0091] In some embodiments, the coal-bearing gas can be tested by prior extraction to determine the content of each component in the coal-bearing gas (at least including the dust content), and the spray volume (i.e., the amount of liquid sprayed by the atomizing device per unit time) can be determined based on the detected content of each component, etc. For example, the obtained content of each component can be imported into a calculation model.

[0092] Continue reading Figure 1 The coal-based gas purification assembly provided by the embodiment of the present invention may further include a flow controller 500 and a master controller (not shown). The master controller is electrically connected to the flow controller 500 and the waste heat utilization device 400 .

[0093] In the embodiments of the present invention, the dust removal and drying processes of the coal-based gas 000 are essentially reaction processes, including physical and chemical reactions, which require a certain amount of time to achieve optimal reaction results. If the flow rate of the coal-based gas 000 is too large, the purification effect of the coal-based gas 000 may be reduced. In addition, the dust removal bin 101 and the drying bin 201 are nearly closed structures. If the flow rate of the coal-based gas 000 is too large, the gas pressure in the dust removal bin 101 and / or the drying bin 201 may be too high, which may pose a safety hazard.

[0094] To this end, the embodiment of the present invention can control the flow controller 500 through the main controller, thereby controlling the flow of the coal-based gas 000, improving the purification effect of the coal-based gas 000, and reducing safety hazards.

[0095] Specifically, the coal-based gas purification assembly provided in this embodiment of the present invention may also include a pressure detection device (not shown) within the dust removal bin 101 and the drying bin 201. This pressure detection device may be electrically connected to a master controller. Upon detecting excessive pressure within the dust removal bin 101 and the drying bin 201, the master controller may control the flow controller 500 to reduce the flow of the coal-based gas 000. This embodiment of the present invention also provides a control method based on the aforementioned coal-based gas purification assembly, which may be executed under the control of the master controller. The details are as follows:

[0096] S101: Acquire a first pressure value corresponding to a dust removal bin and a second pressure value corresponding to a drying bin.

[0097] S102 : Based on at least one of the conditions that the first pressure value is greater than or equal to a first pressure threshold and the second pressure value is greater than or equal to a second pressure threshold, control the flow controller to reduce the current flow value.

[0098] The flow rate (or flow rate value) in the embodiment of the present invention may represent the amount of gas flowing through the air inlet pipe of the dust removal bin body per unit time controlled by the flow controller.

[0099] In the process of implementing the above method, it is possible to determine whether to reduce the flow rate of coal-derived gas based on the detected pressure value of the dust removal bin or the drying bin. For example, the first pressure threshold is x. When the detected first pressure value is greater than or equal to the first pressure threshold, the flow controller can be controlled to reduce the current flow value, and the current flow value represents the real-time gas volume flowing through the intake pipe of the dust removal bin controlled by the flow controller per unit time. For example, if the current flow value is y, a fixed value can be reduced, and after reduction, it becomes y - z, where z < y; or, the current flow value can be reduced proportionally. For example, if the current flow value is y, after reduction, it becomes y×(1 - w%), where w > 0.

[0100] In addition to this solution, a speed reducer (not shown) can also be provided on the dust removal bin and / or the drying bin. The speed reducer can be a kind of pressure valve. When the gas pressure in the dust removal bin and / or the drying bin is too high, the speed reducer can automatically open to release gas, avoiding the explosion of the bin caused by excessive pressure.

[0101] In some embodiments, the coal-derived gas purification component provided by the embodiments of the present invention may further include a humidity detection device (not shown), and the humidity detection device is electrically connected to the total controller.

[0102] Specifically, the humidity detection device can be arranged at the outlet of the drying bin to detect the humidity of the coal-derived gas discharged from the outlet of the drying bin. When the humidity of the coal-derived gas discharged from the outlet of the drying bin exceeds the humidity standard, the drying duration can be increased, for example, the flow rate of the coal-derived gas in the drying bin can be reduced. That is, the embodiments of the present invention also provide a control method based on the above coal-derived gas purification component, and this method can be controlled and executed by the above total controller. Specifically as follows:

[0103] S201. Obtain the humidity value of the coal-derived gas.

[0104] S202. Based on the humidity value being greater than or equal to the humidity threshold, control the flow controller to reduce the current flow value.

[0105] That is, in the process of implementing the above method, it is possible to determine whether to reduce the flow rate of the coal-derived gas based on the detected humidity of the coal-derived gas discharged from the outlet of the drying bin. For example, the humidity threshold is a. When the detected humidity value is greater than a, the flow controller can be controlled to reduce the current flow value. In the case of reducing the current flow value, in fact, the flow rate of the coal-derived gas in the drying bin is also reduced, and the reaction time between the coal-derived gas and the drying material is longer. Therefore, the moisture in the coal-derived gas can be removed to a greater extent.

[0106] In some embodiments, after S201, it may further include:

[0107] S203: Based on the humidity value being greater than or equal to the humidity threshold and the current flow rate being less than or equal to the flow rate threshold, an alarm is generated, wherein the alarm is used to prompt the replacement of the drying material.

[0108] Specifically, the drying material is used to absorb moisture in the coal-based gas. Different drying materials may have different working modes. Some drying materials can absorb moisture under high temperature and high pressure, and can be restored by themselves under normal temperature and pressure to release the moisture in the drying material. If the drying material can release the moisture by itself, it can fall to the bottom of the drying bin and be discharged by itself, which will not be described here. If the drying material cannot release the moisture by itself, the drying material needs to be replaced manually or by some other means, that is, the drying material cannot absorb the drying material indefinitely. If the drying material has fully reacted with the moisture and can no longer continue to absorb moisture, no matter to what level the current flow value is reduced, the humidity of the coal-based gas discharged from the outlet of the drying bin is high and will exceed the humidity threshold. Therefore, when the humidity value is greater than or equal to the humidity threshold, and the current flow value is less than or equal to the flow threshold, an alarm can be generated to prompt the replacement of the drying material.

[0109] Based on the above scheme, timely reminders can be given to replace the drying material to avoid failure to dry the coal-based gas.

[0110] In some implementations, the coal-based gas purification assembly provided by the embodiments of the present invention may further include a flow detection device (not shown), which is electrically connected to the main controller.

[0111] Specifically, the flow rate detection device can be installed at the waste liquid outlet or the water inlet of the waste liquid purification device (the waste liquid outlet is connected to the water inlet of the waste liquid purification device). In the above embodiment, dust entering the dust removal bin combines with the liquid spray to form particles, which fall onto the filter device (mesh grid). Excess water falls from the filter device to the bottom of the dust removal bin and is discharged. A portion of the dust is also discharged from the waste liquid outlet at the bottom of the dust removal bin along with the water. Due to the high density of dust and its tendency to settle, the waste liquid outlet can easily become clogged, preventing the discharge of waste liquid.

[0112] To this end, an embodiment of the present invention provides a flow detection device for detecting the waste liquid flow rate at the waste liquid outlet. If the waste liquid flow rate is too low, indicating that the waste liquid outlet is blocked, an alarm message can be generated, which is used to prompt the cleaning of the waste liquid outlet. In fact, an embodiment of the present invention also provides a control method for the coal-based gas purification component, which can be controlled and executed by the main controller, as follows:

[0113] S301. Obtain the waste liquid flow rate value of the waste liquid outlet.

[0114] S302: Generate an alarm message based on the waste liquid flow value being less than or equal to the waste liquid flow threshold.

[0115] The control ideas and control principles of this control method have been explained above and will not be repeated here.

[0116] Based on the above method, the waste liquid outlet can be promptly prompted to be cleaned to avoid long-term blockage of the waste liquid outlet.

[0117] Figure 6 A schematic diagram of a dust content curve provided by an embodiment of the present invention. Figure 6 In the figure, the horizontal axis represents the date and the vertical axis represents the dust content (unit: mg / m 3 ). Figure 7 A schematic diagram of a humidity curve provided by an embodiment of the present invention. Figure 7 In the graph, the horizontal axis represents date, and the vertical axis represents humidity (unit: %).

[0118] After practice, it was found that the average dust content before dust separation was 594 mg / m³, and the average methane concentration was about 8.3%. After dust separation, the average dust content was 5.1 mg / m³, 99.2% of the dust was removed, and the average methane concentration was about 23%. Figure 6 At the same time, the average water content of coal-based gas before drying is about 86.2%, and the average water content after drying is 4.2%. The dehydration effect is as follows Figure 7 As shown in the figure, the mine has increased its power generation by approximately 780,000 kWh, reduced its economic expenditure, and lowered the maintenance frequency of coal-gas generators, achieving good economic benefits.

[0119] Efficient separation of coal-base gas, dust, and water reduces the risk of coal-base gas explosions and improves the safety of coal-base gas extraction pumping stations. This also reduces environmental governance and production safety costs for enterprises. As a high-quality gas fuel, coal-base gas has high combustion efficiency and relatively low post-combustion residues, making it highly valuable. Purification treatment removes impurities from coal-base gas, improving its purity and quality, making it more suitable for use in power generation, heating, and other fields. This not only meets energy needs but also brings significant economic benefits to enterprises.

[0120] The coal-based gas purification assembly provided by this invention not only increases the utilization value of coal-based gas but also promotes the rapid development of the coal-based gas comprehensive utilization industry. With the continuous research and development and application of coal-based gas comprehensive utilization technologies, more and more coal-based gas is being used in power generation, chemical engineering, heating, and other fields, forming a complete industrial chain and industrial cluster. This not only drives the development of related industries but also creates more employment opportunities and economic benefits for enterprises.

[0121] In summary, this solution has significant economic benefits, not only increasing the utilization value of coal-based gas and reducing resource waste, but also promoting the development of related industries and the advancement of environmental protection. Therefore, the application prospects of the coal-based gas purification component proposed in this invention are very broad.

[0122] It should be noted that the terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the scope of the present invention. As shown in the present specification, unless the context clearly indicates an exception, the words "one", "a", "a kind of" and / or "the" do not specifically refer to the singular and may also include the plural. The terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method or device comprising a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method or device. In the absence of further restrictions, the elements defined by the sentence "comprise a..." do not exclude the presence of other identical elements in the process, method or device comprising the elements.

[0123] It should also be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention.

Claims

1. A coal-based gas purification component, characterized in that: include: The dust removal bin comprises a dust removal bin body and an atomizing device arranged in the dust removal bin body; A drying bin connected to the dust removal bin, the drying bin comprising a drying bin body and drying materials arranged in the drying bin body; The coal-based gas flows through the dust removal bin and the drying bin in sequence, the dust in the coal-based gas combines with the liquid spray sprayed by the atomizing device and remains in the dust removal bin body, and the moisture in the coal-based gas combines with the drying material and remains in the drying bin body; The dust removal bin further includes a filtering device disposed within the dust removal bin body; The first air inlet and the first air outlet corresponding to the dust removal bin are arranged vertically up and down, and the coal-based gas flows through the dust removal bin from bottom to top; The filtering device is arranged on a side of the atomizing device facing the first air inlet, and particles formed by the combination of the dust and the liquid spray are retained on the filtering device due to the filtering effect of the filtering device; The drying chamber further comprises a ventilation device arranged in the drying chamber body; The second air inlet and the second air outlet corresponding to the drying bin are arranged vertically up and down, and the coal-based gas flows through the drying bin from bottom to top; The drying material is laid on the side of the ventilation device facing the second air outlet; The second gas outlet is connected to a coal-based gas generator; The coal-based gas purification component also includes a waste heat utilization device; The waste heat utilization device is connected to the ventilation device, and is used to transfer the heat generated by the coal-based gas generator to the ventilation device. The ventilation device is also used to heat the drying material.

2. The coal-based gas purification component according to claim 1, characterized in that: The filtering device includes multiple layers of mesh grids; the atomizing device includes multiple atomizers; Along the direction from the first air inlet to the first air outlet, the mesh grids and the atomizers are alternately arranged.

3. The coal-based gas purification component according to claim 2, characterized in that: Along the direction from the first air inlet to the first air outlet, the aperture size of the mesh grid gradually decreases.

4. The coal-based gas purification component according to claim 1, characterized in that: A waste liquid outlet is provided at the bottom of the dust removal bin; The moisture in the particles is discharged from the waste liquid outlet based on the filtering effect of the filtering device.

5. The coal-based gas purification component according to claim 4, characterized in that: It also includes a waste liquid purification device; The waste liquid outlet is connected to the water inlet of the waste liquid purification device, and the water outlet of the waste liquid purification device is connected to the atomization device.

6. The coal-based gas purification component according to claim 5, characterized in that: The waste liquid purification device includes a plurality of waste liquid sedimentation tanks connected in sequence; The adjacent waste liquid sedimentation tanks are connected via a drainage pipe arranged at the top of the waste liquid sedimentation tank.

7. The coal-based gas purification component according to claim 1, characterized in that: The breathable device comprises a multi-layer breathable net.

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