Heat energy recovery device for waste gas treatment

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to a heat energy recovery device for waste gas treatment, which comprises a high-efficiency purifier, a first heat energy exchange module and a second heat energy exchange module, the first heat energy exchange module and the second heat energy exchange module are connected with the high-efficiency purifier, and the high-efficiency purifier is provided with a gas inlet pipe and a gas outlet pipe. The second heat energy exchange module is connected with the air outlet pipe; the first heat energy exchange module and the second heat energy exchange module each comprise a heat exchange box body, a plurality of heat accumulators arranged in the heat exchange box body and a circulation pipeline arranged in the heat exchange box body, the circulation pipelines are connected with the heat accumulators, the two ends of each circulation pipeline extend out of the corresponding heat exchange box body, and the circulation pipelines are filled with heat exchange media. The second heat energy exchange module is arranged, heat of high-temperature clean gas flowing out of the efficient purifier can be recycled, the recycled heat is guided to a production workshop to be recycled, the whole energy-saving and environment-friendly effects are achieved, and the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a heat energy recovery device for waste gas treatment. Background Art

[0002] In industrial manufacturing, waste gas is often generated in the process of producing products in industries such as chemical industry, steel, oil refining, circuit boards, leather, plastics, painting, printing, etc. These waste gases will cause pollution when directly discharged into the atmosphere, especially organic waste gas, which not only affects the environment, but also seriously endangers human health. Therefore, the waste gas needs to be treated before discharge. For organic waste gas, catalytic combustion is generally used at present, that is, the waste gas is introduced into the combustion chamber, fully burned under the action of the catalyst, so that the organic components are decomposed, and then the gas is discharged. The combustion process is generally heated by introducing fossil fuels such as natural gas. After reaching the reaction temperature, the organic pollutants are oxidized and decomposed. In this process, the gas is heated to a higher temperature and discharged to the outside after the organic pollutants are decomposed. The temperature of the clean gas is still high when it is discharged to the outside. If it is discharged directly to the outside, the heat will be completely dissipated in the surrounding space, which not only wastes energy, but also increases the temperature of the surrounding environment under the action of heat transfer. Therefore, it is necessary to reuse the discharged high-temperature clean gas. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a heat energy recovery device for waste gas treatment.

[0004] The utility model is implemented by the following scheme:

[0005] A heat energy recovery device for waste gas treatment, the heat energy recovery device for waste gas treatment comprising a high-efficiency purifier, a first heat energy exchange module and a second heat energy exchange module connected to the high-efficiency purifier, the high-efficiency purifier is provided with an air inlet pipe and an air outlet pipe, the first heat energy exchange module is connected to the air inlet pipe, and the second heat energy exchange module is connected to the air outlet pipe; the first heat energy exchange module and the second heat energy exchange module both comprise a heat exchange box, a plurality of heat storage bodies arranged inside the heat exchange box, and a flow pipe arranged inside the heat exchange box, the flow pipe is connected to the heat storage bodies, both ends of the flow pipe extend out of the heat exchange box, and the flow pipe is filled with a heat exchange medium.

[0006] Furthermore, the air inlet pipe is provided with a first automatic regulating valve, and the air outlet pipe is provided with a second automatic regulating valve.

[0007] Furthermore, the heat exchange box is provided with a ventilation pipe, the ventilation pipe is provided with a ventilation valve, and the ventilation pipe is connected to a side of the heat exchange box away from the high-efficiency purifier.

[0008] Furthermore, a plurality of first thermometers are arranged in the heat exchange box, and a second thermometer is arranged in the ventilation pipe.

[0009] Furthermore, the heat storage body is a honeycomb ceramic heat storage body.

[0010] Furthermore, an external energy supply interface is provided at one end of the high-efficiency purifier.

[0011] Furthermore, the circulation pipes are arranged in an S shape on the inner wall of the heat exchange box, and the heat storage body is arranged between two adjacent parallel circulation pipes.

[0012] Furthermore, the flow pipe of the first heat energy exchange module is connected to the flow pipe of the second heat energy module.

[0013] Furthermore, a third thermometer is provided on the side of the air inlet pipe close to the first heat energy exchange module, a fourth thermometer is provided on the side of the air outlet pipe close to the second heat energy exchange module, and a plurality of fifth thermometers are provided in the high-efficiency purifier.

[0014] Furthermore, a plurality of placement grooves are arranged in the heat exchange box body, and the heat storage body is arranged in the placement grooves.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model is provided with a second heat exchange module, which can recover the heat of the high-temperature clean gas flowing out of the high-efficiency purifier, and guide the recovered heat to the production workshop for reuse, which is energy-saving and environmentally friendly as a whole, saving production costs. On the other hand, the heat recovered by the second heat recovery device can also be guided to the first heat exchange module to preheat the exhaust gas to improve the efficiency of exhaust gas purification and reduce the energy consumption of the purification device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a heat energy recovery device for waste gas treatment provided by the utility model.

[0018] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0019] Included in the picture are:

[0020] High-efficiency purifier 1, air inlet pipe 11, air outlet pipe 12, first automatic regulating valve 13, second automatic regulating valve 14, external energy interface 15, third thermometer 16, fourth thermometer 17, fifth thermometer 18, first heat energy exchange module 2, heat exchange box 21, heat storage body 22, circulation pipeline 23, ventilation pipe 24, ventilation valve 25, first thermometer 26, placement slot 27, second thermometer 28, second heat energy exchange module 3. DETAILED DESCRIPTION

[0021] In order to facilitate those skilled in the art to understand the present invention, the present invention will be further described in detail below in conjunction with specific embodiments and drawings.

[0022] Reference Figure 1 to Figure 2 The utility model provides a heat recovery device for waste gas treatment, which includes a high-efficiency purifier 1, a first heat exchange module 2 and a second heat exchange module 3 connected to the high-efficiency purifier, and the high-efficiency purifier 1 is provided with an air inlet pipe 11 and an air outlet pipe 12, the first heat exchange module 2 is connected to the air inlet pipe 11, and the second heat exchange module 3 is connected to the air outlet pipe 12. The waste gas generated by production enters from the first heat exchange module 2 for preliminary preheating, and then the waste gas flows to the high-efficiency purifier 1, and the high-efficiency purifier 1 heats the waste gas so that the temperature of the waste gas reaches the oxidation decomposition temperature of organic pollutants, and the organic pollutants in the waste gas are effectively decomposed to obtain high-temperature clean gas, and the high-temperature clean gas then enters the second heat exchange module 3 for heat exchange, and then flows out from the second heat exchange module 3.

[0023] The first heat exchange module 2 and the second heat exchange module 3 both include a heat exchange box 21, a plurality of heat storage bodies 22 disposed inside the heat exchange box 21, and a flow pipe 23 disposed inside the heat exchange box 21, wherein the flow pipe 23 is connected to the heat storage body 22, and both ends of the flow pipe 23 extend out of the heat exchange box 21, and the flow pipe 23 is filled with a heat exchange medium, and the heat exchange medium is a liquid heat exchange medium. At the same time, the flow pipe 23 is also provided with a corresponding control valve. The flow medium of the first heat exchange module 2 can be introduced into the flow pipe 23 of the first heat exchange module 2 after the temperature is increased in other equipment, or the high-temperature heat exchange medium of the second heat exchange module 3 can be used to preheat the exhaust gas.

[0024] The air inlet pipe 11 is provided with a first automatic regulating valve 13 , and the air outlet pipe 12 is provided with a second automatic regulating valve 14 . The automatic regulating valves can flexibly adjust the flow rate of the gas in the high-efficiency purifier 1 .

[0025] The heat exchange box 21 is provided with a vent pipe 24, and the vent pipe 24 is provided with a vent valve 25. The vent pipe 24 is connected to the side of the heat exchange box 21 away from the high-efficiency purifier 1. The vent valve 25 can adjust the gas flow rate of the heat exchange box 21.

[0026] The heat exchange box 21 is provided with a plurality of first thermometers 26, and the ventilation pipe 24 is provided with a second thermometer 28. The first thermometers 26 are provided at different positions in the heat exchange box 21, so as to monitor the temperature of each area.

[0027] The heat storage body 22 is a honeycomb ceramic heat storage body 22, which has a plurality of pores, and the shapes of the pores are square, rectangular, regular hexagonal, circular, triangular, etc., and the pores are parallel straight channel structures. This structure greatly reduces the resistance of the pores to flow through, and greatly improves the single pore volume heat exchange efficiency of the heat storage body 22. When the gas flows through the pores, heat is exchanged between the heat storage body 22 and the gas. If the temperature of the heat storage body 22 is higher than that of the gas, the heat is transferred from the heat storage body 22 to the gas, and vice versa if the temperature of the heat storage body 22 is lower than that of the gas.

[0028] One end of the high-efficiency purifier 1 is provided with an external energy supplement interface 15. If the internal heat of the high-efficiency purifier 1 is insufficient, energy can be introduced through the external energy interface for heat supplement.

[0029] The circulation pipe 23 is arranged in an S shape on the inner wall of the heat exchange box 21, and the heat storage body 22 is arranged between two adjacent parallel circulation pipes 23. The circulation pipe 23 and the heat storage body 22 are in contact and connected, so that the heat exchange medium in the circulation pipe 23 and the heat storage body exchange heat.

[0030] The circulation pipe 23 of the first heat energy exchange module 2 is connected to the circulation pipe 23 of the second heat energy module, so that the high-temperature clean gas can transfer heat to the heat storage body of the first heat energy exchange module 2, which is convenient for preheating the exhaust gas. The circulation pipe 23 of the first heat energy exchange module 2 and the circulation pipe 23 of the second heat energy module are provided with valves for easy circulation control.

[0031] A third thermometer 16 is provided on the side of the air inlet pipe 11 close to the first heat exchange module 2, a fourth thermometer 17 is provided on the side of the air outlet pipe 12 close to the second heat exchange module 3, and a plurality of fifth thermometers 18 are provided in the high-efficiency purifier 1. The temperature of each position of the utility model can be monitored by the first thermometer 26, the second thermometer 28, the third thermometer 16, the fourth thermometer 17, and the fifth thermometer 18 provided at each position, so as to grasp the heat situation at each position, so as to control each valve according to the temperature change, for example, when the heat is sufficient, the heat exchange medium is introduced into the circulation pipe 23 of the second heat exchange module 3 to recycle the heat, and if the heat is insufficient, the heat exchange medium is not introduced.

[0032] The heat exchange box 21 is provided with a plurality of placement slots 27, and the heat storage body 22 is arranged in the placement slots 27. The placement slots 27 are made of 316 or higher stainless steel to ensure the temperature resistance coefficient. The placement slots 27 are arranged as a drawer structure, which is convenient for the staff to pull out, place or remove the heat storage body 22, and the specific heat storage amount can be adjusted by changing the number of heat storage bodies.

[0033] During operation, the exhaust gas enters from the box of the first heat exchange module 2, is preliminarily heated after passing through the internal heat storage body, and then flows into the high-efficiency purifier 1 from the air intake pipe 11. The high-efficiency purifier 1 further heats and raises the temperature of the exhaust gas to oxidize and decompose the organic pollutants in the exhaust gas. The high-temperature clean gas then enters the box of the second heat exchange module 3, and after passing through the internal heat storage body 22, the heat is directed to the heat storage body 22. When there is sufficient heat, the heat storage body 22 further directs the heat to the heat exchange medium in the circulation pipe 23. The high-temperature heat exchange medium can flow to the production workshop for heat reuse. The high-temperature heat exchange medium can also flow to the circulation pipe 23 of the first heat exchange module 2 for reuse at the same time, and the high-temperature clean gas is discharged from the ventilation pipe 24 after the temperature drops.

[0034] The utility model is provided with a second heat exchange module 3, which can recover the heat of the high-temperature clean gas flowing out of the high-efficiency purifier 1, and guide the recovered heat to the production workshop for reuse, which is energy-saving and environmentally friendly as a whole, and saves production costs. On the other hand, the heat recovered by the second heat recovery device can also be guided to the first heat exchange module 2 to preheat the exhaust gas to improve the efficiency of exhaust gas purification and reduce the energy consumption of the purification device.

[0035] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes according to the above content. Therefore, all such substitutions, improvements and changes are included in the scope of the appended claims.

Claims

1. A heat recovery device for waste gas treatment, characterized in that: The heat energy recovery device for exhaust gas treatment includes a high-efficiency purifier, a first heat energy exchange module and a second heat energy exchange module connected to the high-efficiency purifier, the high-efficiency purifier is provided with an air inlet pipe and an air outlet pipe, the first heat energy exchange module is connected to the air inlet pipe, and the second heat energy exchange module is connected to the air outlet pipe; the first heat energy exchange module and the second heat energy exchange module both include a heat exchange box, a plurality of heat storage bodies arranged inside the heat exchange box, and a flow pipe arranged inside the heat exchange box, the flow pipe is connected to the heat storage bodies, both ends of the flow pipe extend out of the heat exchange box, and the flow pipe is filled with heat exchange medium.

2. The heat recovery device for waste gas treatment according to claim 1, characterized in that: The air inlet pipe is provided with a first automatic regulating valve, and the air outlet pipe is provided with a second automatic regulating valve.

3. The heat recovery device for waste gas treatment according to claim 1, characterized in that: The heat exchange box is provided with a vent pipe, the vent pipe is provided with a vent valve, and the vent pipe is connected to a side of the heat exchange box away from the high-efficiency purifier.

4. The heat recovery device for waste gas treatment according to claim 3 is characterized in that: The heat exchange box is provided with a plurality of first thermometers, and the ventilation pipe is provided with a second thermometer.

5. The heat recovery device for waste gas treatment according to claim 1, characterized in that: The heat storage body is a honeycomb ceramic heat storage body.

6. The heat recovery device for waste gas treatment according to claim 1, characterized in that: One end of the high-efficiency purifier is provided with an external energy supply interface.

7. The heat recovery device for waste gas treatment according to claim 1, characterized in that: The circulation pipes are arranged in an S shape on the inner wall of the heat exchange box, and the heat storage body is arranged between two adjacent parallel circulation pipes.

8. The heat recovery device for waste gas treatment according to claim 1, characterized in that: The flow pipe of the first heat energy exchange module is in communication with the flow pipe of the second heat energy module.

9. The heat recovery device for waste gas treatment according to claim 1, characterized in that: A third thermometer is arranged on a side of the air inlet pipe close to the first heat exchange module, a fourth thermometer is arranged on a side of the air outlet pipe close to the second heat exchange module, and a plurality of fifth thermometers are arranged in the high-efficiency purifier.

10. The heat recovery device for waste gas treatment according to claim 1, characterized in that: The heat exchange box body is provided with a plurality of placement grooves, and the heat storage body is arranged in the placement grooves.

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