Electric heating coal mine gas heat storage oxidation device
By using electric heating modules and temperature control systems in gas thermal storage oxidation devices, the problems of high failure rate and poor safety of diesel or natural gas burner heating methods are solved, and efficient and safe oxidation of gas is achieved.
Patent Information
- Application Number
- CN202422040591.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-22
AI Technical Summary
Existing coal mine gas thermal storage oxidation devices are usually heated by diesel burners or natural gas burners, which have problems with high failure rate and low safety, which affects the gas oxidation effect and poses a risk of explosion.
The electric heating module is used to replace traditional burners, including metal sleeves and high-temperature heating wire sets, the oxidation chamber is heated through the heat dissipation holes, and a temperature sensor and control system are equipped to achieve temperature monitoring and control.
It improves the stability and safety of the heating system, reduces the failure rate, and achieves efficient oxidation of gas. It is suitable for occasions where diesel or natural gas cannot be used to ensure stable operation of the device.
Smart Images
Figure CN223042488U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas heat storage, in particular to an electric heating coal mine gas heat storage oxidation device. Background Technique
[0002] Low-concentration coal mine gas is the main emission source of coal mine gas. Due to the lack of effective utilization ways, it has been discharged in large quantities for a long time, causing a significant greenhouse effect trend and energy waste. It is also an important reason for the low utilization rate of coalbed methane in China. The heat storage oxidation device can realize the collection and reuse of gas, generate heat, and reduce energy waste. However, at present, the heat storage oxidation device generally uses diesel burners and natural gas burners for heating. Diesel burners and natural gas burners have a high failure rate during use. Once a failure occurs, maintenance is required, which will affect the oxidation effect of gas. At the same time, the heating methods using diesel burners and natural gas burners are not ideal in terms of safety. Diesel and natural gas are prone to explosion under the condition of mixed air, which will cause great economic losses. Therefore, the utility model proposes an electric heating coal mine gas heat storage oxidation device to solve this problem. Content of the Utility Model
[0003] (1) Technical Problems to be Solved
[0004] In view of the deficiencies of the prior art, the utility model provides an electric heating coal mine gas heat storage oxidation device. By installing an electric heating module in the oxidation chamber of the heat storage oxidation device, it replaces the traditional diesel burner and natural gas burner, avoiding the drawback of the low temperature of the heat storage oxidation device caused by the heating system failure, and solving the problems of unreasonable heating method and low safety of the current heat storage oxidation device.
[0005] (2) Technical Solutions
[0006] The utility model specifically adopts the following technical solutions to achieve the above purposes:
[0007] An electric heating coal mine gas heat storage oxidation device includes a metal shell, which is composed of steel plates and an aluminosilicate thermal insulation layer fixedly connected to the inner wall of the steel plate; an air inlet chamber, a heat storage chamber, and an oxidation chamber are formed in the metal shell from bottom to top in sequence, and a ceramic heat storage body is filled in the heat storage chamber of the metal shell; a plurality of electric heating modules are arranged and installed at the oxidation chamber in sequence. The electric heating module is composed of a metal sleeve and a high-temperature resistant electric heating wire group embedded inside the metal sleeve. The metal sleeve is fixed on the metal shell through a fixing seat arranged at its end, and heat dissipation holes are arranged on the outer wall of the metal sleeve. The heat of the high-temperature resistant electric heating wire group is dissipated through the heat dissipation holes to realize the heating up of the oxidation chamber.
[0008] Furthermore, the thickness of the aluminosilicate thermal insulation layer is 350 mm.
[0009] Further, a catalyst is filled in the ceramic heat storage body, and a temperature sensing probe is fixed on one side of the ceramic heat storage body to collect temperature information. A control box is fixedly connected to the outer wall of the metal shell. The control box includes a box body fixed on the outer wall of the metal shell, and a single-chip microcomputer and a relay are installed inside the box body. The output end of the temperature sensing probe is electrically connected to the input end of the single-chip microcomputer, and the single-chip microcomputer is electrically connected to the relay to control the high-temperature electric heating wire group.
[0010] Further, a circuit breaker and a power supply interface are arranged at the upper part inside the box body.
[0011] Further, the ceramic heat storage body is designed in a honeycomb shape.
[0012] Further, an air inlet channel and an air outlet channel are arranged at the air inlet chamber, and switching valve assemblies are arranged at the air inlet channel and the air outlet channel of the air inlet chamber. The switching valve assembly is composed of poker valves installed at the air inlet channel and the air outlet channel, and air cylinders for pushing the poker valves to move. The air cylinders are fixed on the metal shell.
[0013] (III) Beneficial effects
[0014] Compared with the prior art, the utility model provides an electrically heated coal mine gas regenerative oxidation device, which has the following beneficial effects:
[0015] 1. In the utility model, by installing an electric heating module at the oxidation chamber, the electric heating module replaces the traditional diesel burner and natural gas burner, which is more economical and environmentally friendly. It is suitable for occasions where diesel or natural gas cannot be used as a heat source to start the oxidation device, and can also be used as a dual heating system in occasions with higher safety requirements. The electric heating module is composed of a metal sleeve and a high-temperature electric heating wire group embedded in the metal sleeve, and heat dissipation holes are arranged on the metal sleeve. During use, heating is carried out through the high-temperature electric heating wire group, and the heat enters the oxidation chamber through the heat dissipation holes to realize the heating of gases such as gas. Compared with the heating methods of diesel burners and natural gas burners, the electric heating module is more efficient, safe, has a low failure rate, does not require frequent maintenance, and does not form an easy explosion situation of diesel and natural gas. Therefore, this heating method is reasonable and safe, can make the entire regenerative oxidation device operate stably, and then realize the efficient oxidation of gas.
[0016] 2. In the utility model, by setting a temperature sensing probe, the real-time monitoring of temperature can be realized, and the temperature information is transmitted to the single-chip microcomputer in the control box in real time. The staff can timely understand the temperature information and then control the operation of the electric heating module, which is convenient for the control and management of the device. Brief description of the drawings
[0017] Figure 1 It is a schematic structural diagram of the present utility model;
[0018] Figure 2 For the present utility model Figure 1 An enlarged structural view of part A in it;
[0019] Figure 3 It is a schematic structural diagram of the electric heating module in the present utility model;
[0020] Figure 4 It is a schematic internal structural diagram of the control box in the present utility model.
[0021] In the figure: 1. Metal shell; 101. Steel plate; 102. Aluminum silicate heat insulation layer; 2. Catalyst; 3. Ceramic heat storage body; 4. Cylinder; 5. Poker valve; 6. Intake chamber; 7. Control box; 701. Box body; 702. Single-chip microcomputer; 703. Relay; 704. Circuit breaker; 705. Power interface; 8. Heat storage chamber; 9. Oxidation chamber; 10. Temperature sensing probe; 11. Electric heating module; 1101. Metal sleeve; 1102. High-temperature electric heating wire group; 1103. Heat dissipation holes; 1104. Fixed seat. Specific embodiments
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0023] Embodiment
[0024] As Figure 1 、 Figure 2 and Figure 3 shown, an electric heating coal mine gas heat storage oxidation device proposed in an embodiment of the present utility model includes a metal shell 1, which is composed of a steel plate 101 and an aluminum silicate heat insulation layer 102 fixedly connected to the inner wall of the steel plate 101; an intake chamber 6, a heat storage chamber 8 and an oxidation chamber 9 are formed in the metal shell 1 in sequence from bottom to top, and a ceramic heat storage body 3 is filled at the heat storage chamber 8 of the metal shell 1; a plurality of electric heating modules 11 are provided and are sequentially installed at the oxidation chamber 9. The electric heating module 11 is composed of a metal sleeve 1101 and a high-temperature electric heating wire group 1102 embedded inside the metal sleeve 1101. The metal sleeve 1101 is fixed to the metal shell 1 through a fixed seat 1104 provided at its end, and heat dissipation holes 1103 are provided on the outer wall of the metal sleeve 1101. The heat of the high-temperature electric heating wire group 1102 is dissipated through the heat dissipation holes 1103 to realize the temperature rise and heating of the oxidation chamber 9.
[0025] It should be noted that the metal housing 1 is composed of a steel plate 101 and an aluminum silicate thermal insulation layer 102. The aluminum silicate thermal insulation layer 102 is made of aluminum silicate thermal insulation material, which can make the outer surface temperature of the metal housing 1 lower than 50 °, reduce the external dissipation of heat. By filling the ceramic heat storage body 3 at the heat storage chamber 8 for heat storage, the temperature field balance of the oxidation device is stabilized. By installing an electric heating module 11 at the oxidation chamber 9, the electric heating module 11 is composed of a metal sleeve 1101 and a high-temperature resistant electric heating wire group 1102. The metal sleeve 1101 is used for the external protection of the high-temperature resistant electric heating wire group 1102. When the high-temperature resistant electric heating wire group 1102 works, heat is dissipated into the oxidation chamber 9 through the heat dissipation holes 1103 to realize the heating of the gas. The fixing seat 1104 realizes the installation and fixation of the entire electric heating module 11, and the metal sleeve 1101 is made of high-temperature resistant 310s stainless steel, with good temperature resistance and high strength.
[0026] As Figure 1 and Figure 2 shown, in some embodiments, the thickness of the aluminum silicate thermal insulation layer 102 is 350 mm.
[0027] It should be noted that the thickness of the aluminum silicate thermal insulation layer 102 is 350 mm, and the heat insulation effect is good.
[0028] As Figure 1 、 Figure 3 and Figure 4 shown, in some embodiments, the ceramic heat storage body 3 is filled with a catalyst 2, and a temperature sensing probe 10 is fixed on one side of the ceramic heat storage body 3 to realize the acquisition of temperature information. A control box 7 is fixedly connected to the outer wall of the metal housing 1. The control box 7 includes a box body 701 fixed on the outer wall of the metal housing 1, and a single-chip microcomputer 702 and a relay 703 are installed inside the box body 701. The output end of the temperature sensing probe 10 is electrically connected to the input end of the single-chip microcomputer 702, and the single-chip microcomputer 702 is electrically connected to the relay 703 to realize the control of the high-temperature resistant electric heating wire group 1102.
[0029] It should be noted that the setting of the catalyst 2 facilitates the heating of the gas. By setting the temperature sensing probe 10 on the ceramic heat storage body 3 for temperature detection, its model is PT1000, and it has good high-temperature resistance and is suitable for the temperature detection of the ceramic heat storage body 3. The model of the single-chip microcomputer 702 is S7-400, which is used for data processing and the control of the high-temperature resistant electric heating wire group 1102. The staff can control the operation of the high-temperature resistant electric heating wire group 1102 according to the temperature data to realize the heating at the oxidation chamber 9.
[0030] As Figure 4 shown, in some embodiments, a circuit breaker 704 and a power supply interface 705 are provided at the upper part inside the box body 701.
[0031] It should be noted that the setting of the circuit breaker 704 can ensure the safety of the device during use.
[0032] As Figure 1 shown, in some embodiments, the ceramic heat storage body 3 is designed in a honeycomb shape to achieve effective heating of the gas.
[0033] As Figure 1 shown, in some embodiments, an air inlet channel and an exhaust channel are provided at the air inlet chamber 6, and switching valve assemblies are provided at both the air inlet channel and the exhaust channel of the air inlet chamber 6. The switching valve assembly is composed of a poker valve 5 installed at the air inlet channel and the exhaust channel, and a cylinder 4 for pushing the poker valve 5 to move. The cylinder 4 is fixed to the metal housing 1.
[0034] It should be noted that the settings of the cylinder 4 and the poker valve 5 are used to open or close the air inlet and exhaust channels of each air inlet chamber 6, so that the regenerative thermal oxidation device operates periodically. The cooperation working mode of the cylinder 4 and the poker valve 5 is a known prior art and will not be elaborated here.
[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. An electrically heated coal mine gas thermal storage oxidation device, characterized in that: include The metal shell (1) is composed of a steel plate (101) and an aluminum silicate insulation layer (102) fixedly connected to the inner wall of the steel plate (101); An air inlet chamber (6), a heat storage chamber (8) and an oxidation chamber (9) are sequentially formed inside the metal shell (1) from bottom to top, and the heat storage chamber (8) of the metal shell (1) is filled with a ceramic heat storage body (3); The electric heating module (11) is provided with a plurality of them and is sequentially installed at the oxidation chamber (9). The electric heating module (11) is composed of a metal sleeve (1101) and a high-temperature resistant electric heating wire group (1102) embedded in the metal sleeve (1101). The metal sleeve (1101) is fixed to the metal shell (1) through a fixing seat (1104) provided at its end, and a heat dissipation hole (1103) is provided on the outer wall of the metal sleeve (1101). The heat of the high-temperature resistant electric heating wire group (1102) is dissipated through the heat dissipation hole (1103), thereby achieving heating of the oxidation chamber (9).
2. The electrically heated coal mine gas thermal storage oxidation device according to claim 1 is characterized in that: The thickness of the aluminum silicate thermal insulation layer (102) is 350 mm.
3. The electrically heated coal mine gas thermal storage oxidation device according to claim 1 is characterized in that: The ceramic heat storage body (3) is filled with a catalyst (2), and a temperature sensing probe (10) is fixed on one side of the ceramic heat storage body (3) to collect temperature information, and a control box (7) is fixedly connected to the outer wall of the metal shell (1), the control box (7) comprises a box body (701) fixed on the outer wall of the metal shell (1), and a single-chip computer (702) and a relay (703) are installed on the inner side of the box body (701), the output end of the temperature sensing probe (10) is electrically connected to the input end of the single-chip computer (702), and the single-chip computer (702) is electrically connected to the relay (703), so as to control the high-temperature resistant heating wire group (1102).
4. The electrically heated coal mine gas thermal storage oxidation device according to claim 3 is characterized in that: A circuit breaker (704) and a power supply interface (705) are provided on the inner upper portion of the box body (701).
5. The electrically heated coal mine gas thermal storage oxidation device according to claim 1 is characterized in that: The ceramic heat storage body (3) is designed to be honeycomb-shaped.
6. The electrically heated coal mine gas thermal storage oxidation device according to claim 1, characterized in that: The air inlet chamber (6) is provided with an air inlet channel and an air exhaust channel, and the air inlet channel and the air exhaust channel of the air inlet chamber (6) are both provided with a switching valve assembly, the switching valve assembly is composed of a poker valve (5) installed at the air inlet channel and the air exhaust channel, and a cylinder (4) for pushing the poker valve (5) to move, and the cylinder (4) is fixed on the metal shell (1).