Device for treating hydrogen sulfide gas in coal body on coal face

Abstract

The invention discloses a device for treating hydrogen sulfide gas in a coal body on a coal face, which comprises an outer pipe arranged in a drill hole; the inner pipe injects a treatment agent into the drill hole through agent injection equipment, and the inner pipe is coaxially arranged in the outer pipe; and the gas injection mechanism is installed in the end of the inner pipe, and the gas injection mechanism can introduce the treatment agent in the inner pipe and conduct hot-pressing export so as to assist the treatment agent to permeate into coal cracks. According to the method, a hot pressing and mechanical pressurizing combined mode is adopted, high-speed and high-permeability airflow is generated, a treatment agent can be effectively pushed to the deep positions of fine cracks of a coal body and fully chemically reacts with hydrogen sulfide adsorbed or stored in the coal body, and the problem that treatment is not thorough due to the fact that a coal seam is compact and the permeability of the agent is poor in a traditional method is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogen sulfide gas treatment, and particularly relates to a hydrogen sulfide gas treatment device in coal body of a coal mining face. BACKGROUND

[0002] At present, for the treatment of hydrogen sulfide in coal body, a 'drilling and injecting medicine method' is generally used, that is, drilling holes are constructed in the coal body, and neutralizing or reacting type medicine is injected into the drilling holes through a grouting pump and the like, so that the medicine and the hydrogen sulfide in the cracks of the coal body are chemically reacted by using the natural diffusion and penetration of the medicine, thereby eliminating or fixing the hydrogen sulfide.

[0003] However, the traditional drilling and injecting medicine method has significant limitations in practical application, especially poor medicine penetration, that is, the coal body is a complex porous medium, and the internal crack structure is small and complex. The liquid medicine injected by relying on static pressure or low pressure has large surface tension and poor fluidity, and cannot effectively overcome the capillary resistance, so it cannot penetrate to the deep part of the fine cracks of the coal body; the treatment range is limited to the limited area around the drilling hole, forming a'medicine island', and the treatment effect on the adsorbed hydrogen sulfide far away from the drilling hole is very poor. SUMMARY

[0004] Therefore, the present application provides a hydrogen sulfide gas treatment device in coal body of a coal mining face to solve the problems in the background.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a hydrogen sulfide gas treatment device in coal body of a coal mining face, comprising: an outer pipe arranged in a drilling hole; an inner pipe coaxially arranged in the outer pipe, and injecting treatment medicine into the drilling hole by a medicine injecting device; and a gas injecting mechanism installed in the end of the inner pipe, which introduces and heat-presses the treatment medicine in the inner pipe to penetrate into the cracks of the coal body; wherein a partition is sealingly arranged between the inner pipe and the outer pipe, and an exhaust valve is installed on the partition.

[0006] Further, the gas injecting mechanism comprises: a fixed seat sealingly installed in the inner pipe; a sliding seat slidingly arranged in the inner pipe, and two symmetrical telescopic cylinders are connected between the sliding seat and the fixed seat; a heat-pressing assembly fixed in the fixed seat, and an air inlet of the heat-pressing assembly is communicated with an inner pipe cavity between the fixed seat and the sliding seat; and a pressurized exhaust assembly, one end of which is communicated with an air outlet of the heat-pressing assembly, and the other end of the pressurized exhaust assembly is communicated with a perforation of the fixed seat.

[0007] Further, the distance between the seat and the sliding base is greater than the maximum extendable distance of the telescopic cylinder.

[0008] Further, the hot-pressing assembly comprises: a heating ring, the inner wall of which is provided with a groove, and a heating coil is fixed in the groove; a lower sealing seat, which is sealingly installed at the bottom opening of the heating ring; and an upper sealing seat, which is sealingly installed on the top surface of the heating ring.

[0009] Further, a pressure valve is installed in the middle hole of the lower sealing seat.

[0010] Further, the pressurized exhaust assembly comprises: an air inlet cylinder, one end of which is in communication with the middle hole of the upper sealing seat; a gas guide base, which is in communication with the other end of the air inlet cylinder; a heat uniformizing pipe, which is in communication between the gas guide base and the air jet assembly; a hollow ring, which is fixed in the air inlet cylinder; a sliding column, which is provided in the air inlet cylinder and is in sliding connection with the hollow ring; a plug, which is fixedly connected to the bottom end of the sliding column and can be matched with the air inlet cylinder to block the air inlet cylinder; and a spring I, which is connected between the top end of the sliding column and the gas guide base.

[0011] Further, the gas guide base is provided with a gas guide channel which penetrates through the gas guide base.

[0012] Further, a fixing column is coaxially provided in the heat uniformizing pipe, the side wall of the fixing column is fixed with a helical blade, and the outer side wall of the helical blade is in close contact with the inner wall of the heat uniformizing pipe.

[0013] Further, the air jet assembly comprises: an inner sliding ring, the bottom opening of which is provided with a one-way valve base; a gas cover, which is sleeved on the side wall of the inner sliding ring and is in sliding connection with the inner sliding ring; a nozzle, which is fixedly installed in the top opening of the gas cover; and a spring II, which is connected between the nozzle and the one-way valve base.

[0014] Compared with the prior art, the present application has the following beneficial effects: The present application adopts the combined mode of hot pressing and mechanical pressing, generates high-speed and high-permeability airflow, and can effectively push the treatment agent to the deep part of the micro-fissure of the coal body, fully reacts with the hydrogen sulfide adsorbed or stored therein, and solves the problem of incomplete treatment caused by the dense coal seam and poor permeability of the agent in the traditional method. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a partial structure diagram of a hydrogen sulfide gas treatment device in a coal mining face coal body; Figure 2 It is Figure 1 A structure diagram of a gas injection mechanism; Figure 3 It is Figure 2 A structure diagram of a hot-pressing assembly; Figure 4 It is Figure 2 A structure diagram of a pressurized exhaust assembly; Figure 5 It is Figure 4 An enlarged diagram of part A; Figure 6 It is Figure 4 A structure diagram of a gas injection assembly.

[0016] In the figure: 1, gas injection mechanism; 2, inner tube; 3, outer tube; 101, pressurized exhaust assembly; 102, lower sealing ring; 103, heating ring; 104, heating ring; 105, upper sealing ring; 106, gas injection assembly; 107, uniform heating pipe; 108, gas guide channel; 109, spring I; 110, sliding column; 111, plug; 112, air inlet cylinder; 113, gas guide seat; 114, spiral blade; 115, fixed column; 116, seat; 117, telescopic cylinder; 118, sliding seat; 1061, nozzle; 1062, gas cover; 1063, inner sliding ring; 1064, one-way valve seat; 1065, spring II. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0018] Embodiment: Please refer to the drawings Figures 1-6 The present application provides a hydrogen sulfide gas treatment device in a coal mining face coal body, comprising: The outer tube 3 is arranged in the borehole; The inner tube 2 is coaxially arranged in the outer tube 3, and the medicament injection device injects treatment medicament into the borehole; And the gas injection mechanism 1 is installed in the end of the inner tube 2, the gas injection mechanism 1 introduces the treatment medicament in the inner tube 2, and conducts hot-pressing export, so as to assist the treatment medicament to penetrate into the coal body crack. The inner tube 2 and the outer tube 3 are sealed by a partition, and the partition is provided with an exhaust valve.

[0019] In the embodiment, the gas injection mechanism 1 comprises: a seat 116, which is sealingly installed in the inner tube 2; a sliding seat 118, which is slidingly matched and installed in the inner tube 2, and two symmetrical telescopic cylinders 117 are connected between the seat 116 and the sliding seat 118; a hot-pressing assembly, which is fixed in the seat 116, and an air inlet of the hot-pressing assembly is communicated with a cavity of the inner tube 2 between the seat 116 and the sliding seat 118; In the embodiment, the distance between the seat 116 and the sliding seat 118 is greater than the maximum extendable distance of the telescopic cylinder 117.

[0020] and a pressurized exhaust assembly 101, one end of which is communicated with the air outlet of the hot-pressing assembly, and the other end of the pressurized exhaust assembly 101 is communicated with the perforation of the seat 116.

[0021] Specifically, the telescopic cylinder serves as a driving pressure source, the stroke of which is controllable (and the maximum stroke is limited to prevent overpressure), thereby providing a stable and adjustable basic pressure.

[0022] In the embodiment, the hot-pressing assembly comprises: a heating ring 103, an inner wall of which is provided with a groove, and a heating coil 104 is fixed in the groove; a lower sealing seat 102, which is sealingly installed at the bottom opening of the heating ring 103; and an upper sealing seat 105, which is sealingly installed on the top surface of the heating ring 103.

[0023] In the embodiment, a pressure valve is installed in the middle hole of the lower sealing seat 102.

[0024] In the embodiment, the pressurized exhaust assembly 101 comprises: an air inlet cylinder 112, one end of which is communicated and installed at the middle hole of the upper sealing seat 105; a gas guide seat 113, which is communicated with the other end of the air inlet cylinder 112; a uniform heating pipe 107, which is communicated between the gas guide seat 113 and a jet assembly 106; a hollow ring, which is fixed in the air inlet cylinder 112; a sliding column 110, which is provided in the air inlet cylinder 112 and slidingly matched with the hollow ring; a plug 111, which is fixedly connected with the bottom end of the sliding column 110, and the plug 111 can be matched and sealed with the air inlet cylinder 112; and a spring 109, which is connected between the top end of the sliding column 110 and the gas guide seat 113.

[0025] It should be noted that the spring 109 and the plug 111 in the pressurized exhaust assembly 101 form a pressure relief valve mechanism. When the pressure is too high, the air pressure overcomes the elastic force of the spring 109, pushes the slide column 110 and the plug 111 up, opens the channel to release pressure; when the pressure returns to normal, the spring 109 resets to close it. This ensures the stability of the injection pressure, avoiding the influence of pressure fluctuation on the treatment effect or damaging the device; In this way, the injection speed and pressure of the treatment agent are precisely controlled, and the application parameters can be flexibly adjusted according to the fracture development degree and hydrogen sulfide concentration of different coal bodies, ensuring the optimization of treatment effect and the repeatability of the process.

[0026] In this embodiment, the gas guide seat 113 is provided with a gas guide channel 108 penetratingly arranged therein.

[0027] In this embodiment, the uniform heating pipe 107 is coaxially provided with a fixing column 115, and the helical fin 114 is fixed on the side wall of the fixing column 115, and the outer side wall of the helical fin 114 is in close contact with the inner wall of the uniform heating pipe 107.

[0028] It should be noted that the design of the uniform heating pipe 107 and the helical fin 114 inside it greatly increases the contact area and contact time of the airflow with the pipe wall, so that the heat of the high-temperature gas from the hot pressing assembly is fully retained and uniformly distributed, avoiding the rapid loss of heat during transportation; That is, the efficient use of heat energy reduces the demand for additional heating energy, while maintaining the gaseous or highly atomized state of the agent until it is injected into the coal body, ensuring the high activity of the agent, thereby improving the utilization rate and reaction efficiency of the agent and reducing the consumption of the agent.

[0029] In this embodiment, the air injection assembly 106 comprises: an inner sliding ring 1063, provided with a one-way valve seat 1064 at the bottom opening thereof; a gas cover 1062, sleeved on the side wall of the inner sliding ring 1063, and the two are matched and slidably connected; a nozzle 1061, fixedly installed in the top opening of the gas cover 1062; and a spring 1065 connected between the nozzle 1061 and the one-way valve seat 1064.

[0030] In specific implementation, the treatment agent is heated by the hot pressing assembly in the air injection mechanism to partially gasify or atomize, significantly reducing the surface tension of the agent and increasing its kinetic energy; Secondly, the telescopic cylinder 117 pushes the sliding seat 118 to move, compresses the cavity between the fixed seat 116 and the sliding seat 118, and generates pressure on the gasified agent, which, combined with the pressurized exhaust assembly 101, forcibly injects the high-pressure gaseous agent through the nozzle 1061.

[0031] The combination of hot pressing and mechanical pressing generates high-speed and high-permeability airflow, which can effectively push the treatment agent to the deep micro-fissure of the coal body, and fully react (such as neutralization, adsorption, solidification) with the hydrogen sulfide adsorbed or contained therein, solving the problem of incomplete treatment caused by poor permeability of the agent due to the denseness of the coal seam in the traditional method.

[0032] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles and spirit of the application and that numerous modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A device for treating hydrogen sulfide gas in coal seam at a coal mining face, characterized in that, include: The outer tube (3) is installed inside the borehole; The inner tube (2) is used to inject treatment agents into the borehole through the agent injection device and is coaxially installed inside the outer tube (3); And an injection mechanism (1) is installed in the end of the inner tube (2). The injection mechanism (1) introduces the treatment agent in the inner tube (2) and performs hot pressure to discharge it, so as to assist the treatment agent in penetrating into the coal body fissures. The inner tube (2) and the outer tube (3) are sealed with a partition, and an exhaust valve is installed on the partition.

2. The hydrogen sulfide gas treatment device in coal seam of a coal mining face according to claim 1, characterized in that: The gas injection mechanism (1) includes: The fixed seat (116) is sealed and installed inside the inner tube (2); The slide (118) is slidably disposed in the inner tube (2), and two symmetrical telescopic cylinders (117) are connected between the slide (118) and the fixed seat (116). The hot pressing assembly is fixed in the fixed seat (116), and the air inlet of the hot pressing assembly is connected to the cavity of the inner tube (2) located between the fixed seat (116) and the slide (118); And a pressurized exhaust assembly (101), one end of which is connected to the outlet of the hot pressing assembly, and the other end of the pressurized exhaust assembly (101) is connected to the perforation of the fixed seat (116).

3. The hydrogen sulfide gas treatment device in coal seam of a coal mining face according to claim 2, characterized in that: The distance between the fixed seat (116) and the sliding seat (118) is greater than the maximum extendable distance of the telescopic cylinder (117).

4. The hydrogen sulfide gas treatment device in coal seam of a coal mining face according to claim 3, characterized in that: The hot-pressing assembly includes: A heating ring (103) has a groove on its inner wall, and a heating coil (104) is fixed in the groove. The lower sealing seat (102) is sealed at the bottom opening of the heating ring (103); And the upper sealing seat (105) is sealed on the top surface of the heating ring (103).

5. A device for treating hydrogen sulfide gas in coal seam at a coal mining face according to claim 4, characterized in that: A pressure valve is installed in the central hole of the lower sealing seat (102).

6. The hydrogen sulfide gas treatment device in coal seam of a coal mining face according to claim 4, characterized in that: The pressurized exhaust assembly (101) includes: An air inlet cylinder (112) has one end connected to the central hole of the upper sealing seat (105); The air guide seat (113) is connected to the other end of the air inlet cylinder (112); A heat equalization pipe (107) is connected between the air guide seat (113) and the jet assembly (106); A hollow ring is fixed inside the air intake cylinder (112); A sliding column (110) is installed inside the air intake cylinder (112) and slides in conjunction with the hollow ring; A plug (111) is fixedly connected to the bottom end of a sliding column (110), and the plug (111) cooperates with the air inlet cylinder (112) to seal. And spring 1 (109), which is connected between the top of the slide (110) and the air guide seat (113).

7. A device for treating hydrogen sulfide gas in coal seam at a coal mining face according to claim 6, characterized in that: The air guide seat (113) is provided with a through air guide channel (108).

8. A gas treatment device according to claim 6, characterized in that: A fixed column (115) is coaxially arranged inside the heat equalizing tube (107). A spiral blade (114) is fixed on the side wall of the fixed column (115), and the outer side wall of the spiral blade (114) is in contact with the inner wall of the heat equalizing tube (107).

9. A device for treating hydrogen sulfide gas in coal seam at a coal mining face according to claim 6, characterized in that: The jet assembly (106) includes: An inner slip ring (1063) has a one-way valve seat (1064) installed at its bottom opening. An air hood (1062) is fitted onto the side wall of an inner slip ring (1063), and the two are slidably connected. The nozzle (1061) is fixedly installed inside the top opening of the air hood (1062); And spring 2 (1065), which is connected between nozzle (1061) and one-way valve seat (1064).

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