Coal series gas purification assembly

Abstract

The invention relates to the technical field of mineral collection, and discloses a coal series gas purification assembly, which comprises: a dust removal bin, which comprises a dust removal bin body and an atomization device arranged in the dust removal bin body; the drying bin communicates with the dust removal bin, and the drying bin comprises a drying bin body and a drying material arranged in the drying bin body; the coal series gas sequentially flows through the dust removal bin and the drying bin, dust in the coal series gas is combined with liquid mist sprayed by the atomization device and left in the dust removal bin, and moisture in the coal series gas is combined with the drying material and left in the drying bin. Based on the scheme, the purification effect on the coal series gas can be achieved, dust in the coal series gas can be effectively removed, the humidity of the coal series gas is low, under the condition that the coal series gas flows into a flame arrester, a coal series gas generator air cylinder and the like, abrasion to equipment is smaller, due to the fact that the humidity of the coal series gas is lower, the combustion effect of the coal series gas is better, and the combustion effect of the coal series gas is better. And the utilization efficiency of the coal-series gas can be improved.

Description

Technical Field

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

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

[0003] However, during the process of extracting coal series gas, a large amount of dust is carried along with the coal series gas and extracted together. The dust will cause wear and tear on equipment such as flame arresters and cylinders of coal series gas generators, affecting the utilization efficiency of coal series gas. Therefore, it is necessary to purify the coal series gas to reduce damage to equipment and improve the utilization efficiency of coal series gas. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a coal series gas purification component to solve the problems of excessive dust volume in the existing solution for extracting coal series gas, which easily leads to equipment damage and low utilization efficiency of coal series gas.

[0005] The present invention provides a coal series gas purification component, including:

[0006] A dust removal chamber, including a dust removal chamber body and an atomization device arranged in the dust removal chamber body;

[0007] A drying chamber, communicating with the dust removal chamber, the drying chamber including a drying chamber body and drying materials arranged in the drying chamber body;

[0008] The coal series gas flows through the dust removal chamber and the drying chamber in sequence. The dust in the coal series gas combines with the liquid spray ejected by the atomization device and remains in the dust removal chamber body, and the moisture in the coal series gas combines with the drying materials and remains in the drying chamber body;

[0009] The dust removal chamber further includes a filtering device arranged in the dust removal chamber body;

[0010] A first air inlet and a first air outlet corresponding to the dust removal chamber body are arranged vertically up and down, and the coal series gas flows through the dust removal chamber body from bottom to top;

[0011] The filtering device is arranged on the side of the atomization device facing the first air inlet. Based on the filtering effect of the filtering device, the particles formed by the combination of the dust and the liquid spray remain on the filtering device.

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

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

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

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

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

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

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

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

[0020] Adjacent waste liquid sedimentation tanks are communicated based on the drain pipes provided at the top of the waste liquid sedimentation tanks.

[0021] Optionally, the drying bin further includes a ventilation device provided in the drying bin body;

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

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

[0024] Optionally, the ventilation device includes multiple layers of ventilation nets.

[0025] Optionally, the second air outlet is communicated with a coal series gas generator;

[0026] The coal series gas purification assembly further includes a waste heat utilization device;

[0027] The waste heat utilization device is connected to the ventilation device, and the waste heat utilization device is used to conduct the heat generated by the coal series gas generator to the ventilation device, and the ventilation device is further used to heat the drying material.

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

[0029] Under the action of the coalbed methane purification component provided by the present invention, the extracted coalbed methane flows through the dust removal bin and the drying bin in sequence. The atomization device in the dust removal bin can spray a liquid spray to combine with the dust in the coalbed methane to form particles with a greater weight, thereby realizing leaving the dust in the dust removal bin body. The coalbed methane flowing out of the dust removal bin has achieved the dust removal effect. Further, the moisture in the coalbed methane can absorb the moisture in the coalbed methane under the action of the drying material in the drying bin, reducing the humidity of the coalbed methane. In summary, under the action of the coalbed methane purification component, the dust in the coalbed methane can be effectively removed, and the humidity of the coalbed methane is also relatively low. When flowing into a flame arrester, a coalbed methane generator cylinder, etc., the wear on the equipment is smaller. Since the humidity of the coalbed methane is lower, the combustion effect of the coalbed methane is also better, which can improve the utilization efficiency of the coalbed methane. 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 will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 Structural schematic diagram of a coalbed methane purification component provided by an embodiment of the present invention;

[0032] Figure 2 Structural schematic diagram of a dust removal bin provided by an embodiment of the present invention;

[0033] Figure 3 Another structural schematic diagram of a dust removal bin provided by an embodiment of the present invention;

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

[0035] Figure 5 Structural schematic diagram of a drying bin provided by an embodiment of the present invention;

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

[0037] Figure 7 Schematic diagram of a humidity curve provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be described clearly and completely below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0039] Figure 1 The following is a schematic structural diagram of a coalbed gas purification component provided by an embodiment of the present invention, including:

[0040] A dust removal bin 100, including a dust removal bin body 101 and an atomizing device 102 arranged in the dust removal bin body 101.

[0041] A drying bin 200, connected to the dust removal bin 100. The drying bin 200 includes a drying bin body 201 and a drying material 202 arranged in the drying bin body 201.

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

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

[0044] The atomizing device 102 represents a functional device capable of spraying a liquid spray, such as a fine water mist generator, etc. The component of the liquid spray can be water or other liquids that can achieve a binding effect with dust, and will not be elaborated here. Under the action of the atomizing device 102, the dust removal bin body 101 can be filled with liquid spray, and the coalbed gas 000 passing through the dust removal bin body 101 will combine with the liquid spray. After the dust in the coalbed gas 000 combines with the liquid spray, its weight further increases, and it can relatively easily remain in the dust removal bin body 101. Therefore, the dust in the coalbed gas 000 flowing through the dust removal bin 100 can be separated from the coalbed gas 000, and the coalbed gas 000 entering the drying bin 200 contains no dust or has a reduced dust content. Among them, the atomizing device 102 can be arranged in a ring shape or other shapes to increase the spraying area of the water mist and combine dust to a greater extent.

[0045] However, although the coal-bed gas 000 flowing through the dust removal bin 100 has achieved the dust removal purpose, the moisture content in the coal-bed gas 000 will increase. Moreover, the coal-bed gas 000 extracted from the mine itself may also contain a certain amount of moisture. The coal-bed gas 000 with a higher humidity is still not conducive to combustion, affecting the utilization efficiency of the coal-bed gas 000. In addition, the moisture contained in the coal-bed gas 000 will cause rusting of the equipment and exacerbate equipment wear. Therefore, in the embodiments of the present invention, a drying bin 200 is provided to achieve a drying effect on the coal-bed gas 000 and remove the moisture in the coal-bed gas.

[0046] Specifically, the drying material 202 represents a functional material capable of absorbing the moisture in the coal-bed gas 000, such as molecular sieve and so on. Under the action of the drying material 202, the coal-bed gas 000 flowing through the drying bin body 201 can be in full contact with the drying material 202 to remove the moisture in the coal-bed gas 000.

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

[0048] Figure 2 It is a schematic structural diagram of a dust removal bin provided by an embodiment of the present invention. In some embodiments, the dust removal bin 100 further includes a filtering device 103 disposed in 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-bed gas flows through the dust removal bin body 101 from bottom to top.

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

[0051] As Figure 2 shown, the filtering device 103 represents a functional device capable of achieving a filtering effect, which can both pass through the coal-bed gas, collect the particles formed by the combination of dust and liquid spray, and filter the excess water in the particles, such as a filter screen and so on.

[0052] Vertically, the coal-bed gas enters the dust removal bin body 101 from the first air inlet 1011 disposed below. After passing through the filtering device 103 (part of the dust in the coal-bed gas may be directly filtered by the filtering device 103), the dust and the liquid spray combine to form heavier particles, which then fall on the filtering device 103. It should be particularly noted that in the embodiments of the present invention, there are multiple descriptions of "up" and "down". Without special instructions, the "up" and "down" refer to up and down in the vertical direction.

[0053] Among them, multiple regular or irregular openings can be provided on the side wall of the first air inlet 1011 inside the dust removal bin body 101, so as to evenly disperse the coal-based gas into the dust removal bin body 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 lower part to the upper part of the dust removal bin body 101 and finally be discharged from the dust removal bin body 101. In addition, the openings provided on the side wall of the air inlet pipe can face upward in the vertical direction, so as to give the coal-based gas an initial velocity upward in the vertical direction, making it easier for the coal-based gas to flow upward.

[0054] Figure 2 The dust removal bin 100 in [[ ]] can further include a demister 104 provided inside the dust removal bin body 101. Specifically, the demister 104 represents a functional device capable of adsorbing the water mist in the coal-based gas. The demister 104 can be provided between the first air 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 action of the demister 104 to remove most of the moisture in the coal-based gas. In addition to this, a demister can also be provided inside the drying bin body. Similar to the dust removal bin body, the demister can be provided between the drying material inside the drying bin body and the air outlet of the drying bin body, and its function is similar to that of the demister inside the dust removal bin body, which will not be elaborated here.

[0055] Continue to refer to Figure 2 In some embodiments, the coal-based gas purification assembly can further include a harmful gas absorption device 105 provided at the first air outlet 1012, and the harmful gas absorption device 105 is used to absorb some harmful gases in the coal-based gas.

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

[0057] Figure 3 It is a schematic diagram of another dust removal bin structure provided by an embodiment of the present invention. In some embodiments, the filtering device 103 includes multiple layers of mesh grids 1031. The atomizing 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] Such as Figure 3As shown, in order to achieve 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 screens in the above embodiments, that is, they are functional devices that can allow coal-based gas to pass through, collect the particles formed by the combination of dust and liquid spray, and filter the excess water in the particles. The atomizer 1021 can be the fine water mist generator in the above embodiments, etc. Figure 3 Only the example of setting four layers of mesh grids 1031 and four atomizers 1021 is used for illustration herein.

[0060] The order of the coal-based gas entering the dust removal chamber 101 is as follows: 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 has undergone four dust removal effects.

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

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

[0063] Specifically, borrow Figure 3 , along the vertical direction from bottom to top, the particles formed by the combination of dust and liquid spray fall on the mesh grid 1031. The larger the size of the dust, the easier it is to combine with the liquid spray to form particles and fall on the mesh grid 1031, while the probability that the smaller-sized dust cannot combine with the liquid spray to form particles is higher and may pass through the mesh grid 1031. In addition, even if some of the smaller-sized dust combines with the liquid spray to form particles, it may still pass through the mesh grid 1031 due to the smaller particle size and higher gas flow rate. By setting the mesh grid 1031 with gradually decreasing aperture size, it is beneficial to filter out the smaller-sized particles. In addition, if only one layer of mesh grid 1031 with a smaller aperture size is provided, it is likely to easily block the mesh grid 1031 and unable to remove dust. Setting a mesh grid 1031 with a larger aperture size at the bottom can achieve the dust removal effect and is not easily blocked. Setting a mesh grid 1031 with a smaller aperture size at the top can filter out the smaller-sized particles, and since the number of particles it filters out is less, it is not easily blocked either.

[0064] Continue to refer to Figure 2 , in some embodiments, a waste liquid outlet 1013 is provided at the bottom of the dust removal chamber 101.

[0065] Based on the filtering effect of the filtering device 103, the water in the particles is discharged from the waste liquid outlet 1013.

[0066] Specifically, the particles formed after the dust is combined with the liquid spray fall on the filtering device 103. When the humidity is relatively high, the liquid (such as moisture) contained therein can fall from the filtering device 103 and finally fall to the bottom of the dust removal chamber 101. The bottom of the dust removal chamber 101 can be in a funnel shape, and the waste liquid is discharged through the waste liquid outlet 1013 to prevent excessive water in the dust removal chamber 101. The waste liquid discharged from the waste liquid outlet 1013 can be recycled after purification.

[0067] Continue to refer to Figure 2 , in some embodiments, a blockage prevention device 1014 can also be provided at the waste liquid outlet 1013. Most of the substances discharged from the waste liquid outlet 1013 are waste liquid, but there are still some substances with relatively high viscosity (approximate to silt) formed after the combination of dust and liquid spray. This part of the substance may block the waste liquid outlet 1013. Therefore, the blockage prevention device 1014 is provided in the embodiment of the present invention to relieve the problem of blockage of the waste liquid outlet 1013. Specifically, the blockage prevention device 1014 can be a cutting knife, which can be provided on the side wall of the pipeline at the waste liquid outlet 1013. An openable cutting port can be provided at this side wall, and the cutting knife can extend into the pipeline at the waste liquid outlet 1013 from the cutting port to cut off the blocked substance to achieve the purpose of dredging.

[0068] Continue to refer to Figure 1 , in some embodiments, it further includes a waste liquid purification device 106.

[0069] The waste liquid outlet 1013 is communicated with the water inlet of the waste liquid purification device 106, and the water outlet of the waste liquid purification device 106 is communicated with the atomizing device 102.

[0070] As described in the above embodiments, part of the waste liquid in the dust removal chamber 101 (hereinafter, taking the liquid spray as moisture as an example) can fall to the bottom of the dust removal chamber 101 and flow out from the waste liquid outlet 1013. This part of the waste liquid can still be recycled. Specifically, the main components in the waste liquid are only dust and moisture. Therefore, after the dust is filtered by the waste liquid purification device 106, the remaining moisture can be recycled to the atomizing device 102 to repeat the dust removal process. As Figure 1 shown, a first extraction pump 1071 can be provided between the waste liquid outlet 1013 and the waste liquid purification device 106, and a second extraction pump 1072 can be provided between the waste liquid purification device 106 and the atomizing 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 purified clean liquid to the atomizing device 102.

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

[0072] Figure 4Schematic structural diagram of a waste liquid purification device provided by 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 based on a drain pipe 1062 provided on the top of the waste liquid sedimentation tank.

[0074] As Figure 4 shown, Figure 4 In the figure, the water inlet of the waste liquid purification device 106 is denoted as the first water inlet 1063, and the water outlet of the waste liquid purification device 106 is denoted as the first water outlet 1064. The first water inlet 1063 is connected to the waste liquid outlet 1013, and the first water outlet 1064 is connected to the atomizing device 102. After the waste liquid flows out through the waste liquid outlet 1013, it enters the waste liquid sedimentation tank. Since the dust is insoluble in water and the density of the dust is greater than that of water, when the waste liquid enters the waste liquid sedimentation tank and the water flow rate is slow (or approaches 0), the dust will precipitate to the bottom of the waste liquid sedimentation tank. Figure 4 Exemplarily shows 4 waste liquid sedimentation tanks A, B, C, and D connected in sequence. Adjacent waste liquid sedimentation tanks are connected by a drain pipe provided on the top of the waste liquid sedimentation tank. The waste liquid first enters A for sedimentation. When the waste liquid reaches a certain water level, it is discharged to B through the drain pipe between A and B for further sedimentation. At this time, most of the dust in the waste liquid has precipitated in A; after the waste liquid in B reaches a certain water level, it is discharged to C through the drain pipe between B and C for further sedimentation. At this time, most of the remaining dust in the waste liquid has precipitated in B; after the waste liquid in C reaches a certain water level, it is discharged to D through the drain pipe between C and D for further sedimentation. At this time, most of the remaining dust in the waste liquid has precipitated in C. After the sedimentation of the above 4 sedimentation tanks, most of the dust in the waste liquid has been precipitated. The waste liquid in D can reach the standard for recycling to the atomizing device 102 for cyclic dust removal.

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

[0076] Continuing to refer to Figure 1 , in some embodiments, the drying bin 200 further includes a ventilation device 203 provided in the drying bin body 201.

[0077] The corresponding second air inlet 2011 and second air outlet 2012 of the drying bin body 201 are arranged vertically 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 one side of the air-permeable device 203 facing the second air outlet 2012.

[0079] Specifically, as described in the above embodiments, after the dust removal function of the dust removal bin 100, the dust in the coalbed gas 000 is removed. However, based on the working principle of the dust removal bin 100, the coalbed gas 00 contains a large amount of moisture, and moreover, there may be a large amount of moisture in the coalbed gas 000 extracted from the mine itself.

[0080] During the process of the coalbed gas 000 passing through the drying bin 200, the drying material 202 in the drying bin body 201 will absorb the moisture in the coalbed gas 000. However, if the contact area between the drying material 202 and the coalbed gas 000 is too small, it will affect the drying effect. Therefore, in the embodiment of the present invention, an air-permeable device 203 is provided. The air-permeable device 203 has an overall planar structure. The plane where the air-permeable device 203 is located can be perpendicular to the flow direction of the coalbed gas in the drying bin body 201, or described as perpendicular to the direction from the second air inlet 2011 to the second air outlet 2012. Its surface is provided with air-permeable holes, making the air-permeable device 203 present a structure similar to a sieve. In this structure, the drying material 202 is laid on the surface of the air-permeable device 203 facing the second air outlet 2012 and will not fall off the air-permeable device 203, and moreover, the coalbed gas 000 can pass through the air-permeable holes of the air-permeable device 203.

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

[0082] Figure 5 It is a schematic diagram of a drying bin structure provided by an embodiment of the present invention. In some embodiments, the air-permeable device 203 includes multiple layers of air-permeable nets 2031.

[0083] As Figure 5 shown, the air-permeable device 203 can be composed of multiple layers of air-permeable nets 2031. Figure 5 Exemplarily, 11 layers of air-permeable nets 2031 are shown, and drying materials (not shown) are laid on the surface of each layer of air-permeable net 2031. Thus, during the process of the coalbed gas passing through the drying bin body 201, multiple drying effects can be achieved, and the moisture content in the coalbed gas can be further reduced.

[0084] Continue to refer to Figure 1 , in some embodiments, the air outlet of the drying bin body 201 is communicated with the coalbed gas generator 300.

[0085] The coalbed gas purification assembly further includes a waste heat utilization device 400.

[0086] The waste heat utilization device 400 is connected to the air permeation device 203. The waste heat utilization device 400 is used to conduct the heat generated by the coal seam gas generator 300 to the air permeation device 203, and the air permeation device 203 is also used to heat the drying material 202.

[0087] Specifically, after dust removal and drying, the coal seam gas 000 can be used for power generation. During the process of burning coal seam gas for power generation by the coal seam gas generator 300, not only will electric energy be directly generated, but there will also be a part of the waste heat that cannot be directly used for power generation.

[0088] In the embodiment of the present invention, a waste heat utilization device 400 can be set to conduct the heat (i.e., waste heat) generated by the coal seam gas generator 300 to the air permeation device 203. When the drying material 202 (such as molecular sieve, etc.) absorbs moisture, it often needs to be heated to accelerate the reaction process, and within at least a certain temperature range, the higher the temperature, the faster the reaction and the better the reaction effect, that is, the better the moisture absorption effect actually is. Therefore, the above embodiment can further improve the drying effect of the coal seam gas 000 and reduce the water content in the coal seam gas 00.

[0089] In the embodiment of the present invention, the purpose of setting the waste heat utilization device 400 is not only to improve the drying effect of the coal seam gas 000, but more importantly, to improve the drying effect of the coal seam gas 000 without paying a large energy cost. On the premise that the waste heat of the coal seam gas generator 300 is certain, if the heat in the drying bin 201 is lost at a relatively fast rate, there may be a situation where the temperature of the drying material 202 is insufficient, the reaction is too slow and the reaction is not sufficient, resulting in a poor drying effect of the coal seam gas 000. If the heat input is continued to be increased, it may be necessary to add an additional heating device, causing unnecessary energy waste.

[0090] Therefore, in the embodiment of the present invention, heat insulation materials (not shown) can also be provided on the outer surface or the inner surface of the drying bin 201, and the heat insulation materials are used to prevent heat loss. When the heat loss rate in the drying bin 201 is relatively slow, the waste heat utilization device 400 can be used to increase the temperature of the air permeation device 203 as much as possible, that is, to increase the temperature of the drying material 202 as much as possible. If the temperature of the drying material 202 is too high, it is only necessary to control the waste heat utilization device 400 to stop conducting heat to the air permeation device 203, and there is no need for a large amount of energy waste.

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

[0092] Continue to refer toFigure 1 In the embodiments of the present invention, the coalbed gas purification assembly 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 essence of the dust removal process and the drying process of the coalbed gas 000 is a reaction process, including physical reactions and chemical reactions, which requires a certain amount of time to achieve a better reaction effect. If the flow rate of the coalbed gas 000 is too large, the purification effect of the coalbed gas 000 may deteriorate. In addition, as an approximately closed structure, if the flow rate of the coalbed gas 000 is too large, the gas pressure in the dust removal chamber 101 and / or the drying chamber 201 may be too high, and there may be potential safety hazards.

[0094] Therefore, in the embodiments of the present invention, the master controller can control the flow controller 500, thereby controlling the flow rate of the coalbed gas 000, improving the purification effect of the coalbed gas 000, and reducing potential safety hazards.

[0095] Specifically, the coalbed gas purification assembly provided by the embodiments of the present invention may further be provided with a pressure detection device (not shown) in the dust removal chamber 101 and the drying chamber 201. The pressure detection device can be electrically connected to the master controller. When the master controller detects that the pressure in the dust removal chamber 101 and the drying chamber 201 is too high, it can control the flow controller 500 to reduce the flow rate of the coalbed gas 000. That is, the embodiments of the present invention actually also provide a control method based on the above coalbed gas purification assembly, and this method can be controlled and executed by the above master controller. Specifically as follows:

[0096] S101. Obtain a first pressure value corresponding to the dust removal chamber and a second pressure value corresponding to the drying chamber.

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

[0098] Wherein, the flow rate (or flow value) in the embodiments of the present invention may represent the amount of gas flowing through the intake pipe of the dust removal chamber 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 inlet 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 assembly 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 assembly, 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. Generate an alarm prompt based on the humidity value being greater than or equal to the humidity threshold and the current flow rate value being less than or equal to the flow rate threshold. Among them, the alarm prompt is used to prompt the replacement of the drying material.

[0108] Specifically, the drying material is used to absorb the moisture in the coal-derived gas. Based on different drying materials, there can be different working methods. Some drying materials can absorb moisture under high temperature and high pressure conditions and can self-reduce and release the moisture in the drying material under normal temperature and normal pressure conditions. If the drying material can release the moisture in it by itself, it can fall to the bottom of the drying bin and be discharged automatically, which will not be elaborated here. If the drying material cannot release the moisture in it by itself, the drying material needs to be replaced manually or by some means, that is, the drying material cannot absorb moisture indefinitely. If the drying material has fully reacted with the moisture and can no longer continue to absorb moisture, then no matter how much the current flow rate value is reduced, the humidity of the coal-derived gas discharged from the air outlet of the drying bin will be relatively 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 rate value is less than or equal to the flow rate threshold, an alarm prompt can be generated to prompt the replacement of the drying material.

[0109] Based on the above solution, it is possible to timely remind to replace the drying material and avoid being unable to dry the coal-derived gas.

[0110] In some embodiments, the coal-derived gas purification component provided by the embodiments of the present invention may further include a flow rate detection device (not shown), and the flow rate detection device is electrically connected to the total controller.

[0111] Specifically, the flow rate detection device can be arranged at the waste liquid outlet or the water inlet of the waste liquid purification device (the waste liquid outlet is communicated with the water inlet of the waste liquid purification device). In the above embodiment, the dust entering the dust removal bin combines with the liquid spray to form particles and falls onto the filtering device (mesh grid), and the excess moisture falls from the filtering device to the bottom of the dust removal bin and is discharged. And a part of the dust will be discharged together with the moisture from the waste liquid outlet at the bottom of the dust removal bin. Since the density of the dust is relatively large and it is easy to precipitate, it will also cause the waste liquid outlet to be easily blocked and unable to discharge the waste liquid.

[0112] For this reason, the embodiments of the present invention are provided with a flow rate detection device. The flow rate detection device is used to detect the waste liquid flow rate of the waste liquid outlet. If the waste liquid flow rate is too low, it means that the waste liquid outlet is blocked, and then an alarm message can be generated. The alarm message is used to prompt to clean the waste liquid outlet. That is, in fact, the embodiments of the present invention also provide a control method for the coal-derived gas purification component. The control method can be controlled and executed by the total controller, specifically 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 idea and control principle of this control method have been elaborated above and will not be repeated here.

[0116] Based on the above method, it is possible to promptly prompt for cleaning the waste liquid outlet to avoid the long-term blockage of the waste liquid outlet.

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

[0118] After practice, it is found that the average dust content before dust separation is 594 mg / m³, and the average methane concentration is about 8.3%. After dust separation, the average dust content is 5.1 mg / m³, removing 99.2% of the dust, and the average methane concentration is about 23%, as Figure 6 shown. At the same time, the average water content in the coal measure gas before drying is about 86.2%, and the average water content after drying is 4.2%. The water removal effect is as Figure 7 shown. It increases the power generation of the mine by about 780,000 kWh, reduces the economic expenditure, and at the same time reduces the maintenance frequency of the coal measure gas generator, having good economic benefits.

[0119] The efficient separation of coal measure gas - dust - water can reduce the risk of coal measure gas explosion and improve the safety of the coal measure gas extraction pumping station. To a certain extent, it also reduces the enterprise's environmental governance cost and safety production cost. Coal measure gas, as a high-quality gas fuel, has high combustion efficiency and relatively few residues after combustion, so it has high utilization value. Through purification treatment, impurities in the coal measure gas can be removed, improving the purity and quality of the coal measure gas, making it more suitable for fields such as power generation and heating, meeting energy needs while bringing considerable economic benefits to the enterprise.

[0120] The coal measure gas purification component provided by the present invention not only improves the utilization value of coal measure gas but also promotes the rapid development of the coal measure gas comprehensive utilization industry. With the continuous research and development and application of coal measure gas comprehensive utilization technology, more and more coal measure gas is used in fields such as power generation, chemical industry, and heating, 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, the proposed solution has remarkable economic benefits. It not only enhances the utilization value of coal-series gas, reduces resource waste, but also promotes the development of related industries and the progress of environmental protection. Therefore, the application prospect of the coal-series gas purification component proposed by the present invention is very broad.

[0122] It should be noted that the terms used in the present invention are only for describing specific embodiments and do not limit the scope of the present invention. As shown in the specification of the present invention, unless the context clearly indicates an exception, words such as "a", "an", "one" and / or "the" do not specifically refer to the singular and may also include the plural. The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method or device including the said element.

[0123] It should also be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and 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, and thus should not be construed as a limitation to the present invention. Unless otherwise clearly specified and defined, terms such as "installed", "connected", "coupled" 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, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside 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 situations.

[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 them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent substitution on some or all of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention.

Claims

1. A coal-bed gas purification component, characterized in that Comprising: A dust removal bin, including a dust removal bin body and an atomizing device arranged inside the dust removal bin body; A drying bin, communicating with the dust removal bin, the drying bin including a drying bin body and a drying material arranged inside the drying bin body; The coalbed gas flows through the dust removal bin and the drying bin in sequence. The dust in the coalbed gas combines with the liquid spray ejected by the atomizing device and remains in the dust removal bin body, and the moisture in the coalbed gas combines with the drying material and remains in the drying bin body; The dust removal bin further includes a filtering device arranged inside the dust removal bin body; The first air inlet and the first air outlet corresponding to the dust removal bin body are arranged vertically up and down, and the coalbed gas flows through the dust removal bin body from bottom to top; The filtering device is arranged on the side of the atomizing device facing the first air inlet. The particles formed by the combination of the dust and the liquid spray remain on the filtering device based on the filtering effect of the filtering device.

2. The coalbed gas purification component according to claim 1, wherein 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 arranged alternately.

3. The coalbed gas purification assembly according to claim 2, wherein, Along the direction from the first air inlet to the first air outlet, the aperture size of the mesh grids gradually decreases.

4. The coalbed methane purification component according to claim 1, characterized in that, A waste liquid outlet is arranged at the bottom of the dust removal bin body; The moisture in the particles is discharged from the waste liquid outlet based on the filtering effect of the filtering device.

5. The coalbed methane purification component according to claim 4, wherein It further includes a waste liquid purification device; The waste liquid outlet communicates with the water inlet of the waste liquid purification device, and the water outlet of the waste liquid purification device communicates with the atomizing device.

6. The coalbed methane purification component according to claim 5, wherein, The waste liquid purification device includes multiple waste liquid sedimentation ponds connected in sequence; Adjacent waste liquid sedimentation ponds are connected through a drain pipe arranged at the top of the waste liquid sedimentation pond.

7. The coal-bed gas purification assembly according to claim 1, wherein, The drying bin further includes a ventilation device arranged inside the drying bin body; The second air inlet and the second air outlet corresponding to the drying bin body are arranged vertically up and down, and the coalbed gas flows through the drying bin body from bottom to top; The drying material is laid on the side of the ventilation device facing the second air outlet.

8. The coalbed methane purification component according to claim 7, wherein The ventilation device includes multiple layers of ventilation nets.

9. The coal-bed gas purification assembly according to claim 7, wherein, The second air outlet communicates with a coalbed gas generator; The coalbed gas purification assembly further includes a waste heat utilization device; The waste heat utilization device is connected to the ventilation device. The waste heat utilization device is used to conduct the heat generated by the coalbed gas generator to the ventilation device, and the ventilation device is also used to heat the drying material.

Images