Waste gas treatment system
The waste gas treatment system recovers heat from treated gases to preheat incoming gases and produce hot water, addressing energy wastage and enhancing energy efficiency.
Patent Information
- Application Number
- CN202421909695.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-07
AI Technical Summary
The heat generated by existing exhaust gas treatment systems during the treatment process cannot be effectively utilized, resulting in waste of energy.
An exhaust gas treatment system is designed, including a filtering mechanism, a first heat exchange mechanism and a second heat exchange mechanism. The exhaust gas is pyrolyzed by a combustion engine and used the waste heat of high-temperature flue gas to be preheated, while producing high-temperature hot water to be reused to achieve heat reuse.
The emission of exhaust gas meets the standard, while saving the heat energy required for pyrolysis, improving energy utilization efficiency, and reducing energy consumption.
Smart Images
Figure CN223106058U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of waste gas treatment, in particular to a waste gas treatment system. Background Art
[0002] A waste gas treatment system is an equipment system used to treat waste gas generated in industrial or production processes. Its main goal is to reduce or remove harmful substances, pollutants, and odors in the waste gas to ensure that the waste gas emissions comply with environmental regulations and standards, protecting the environment and public health.
[0003] In the prior art, waste gas treatment systems usually generate a large amount of heat. If this heat cannot be effectively utilized and recovered, it will lead to unnecessary energy consumption, resulting in energy waste. Summary of the Utility Model
[0004] The purpose of the present utility model is to at least solve one of the technical problems existing in the prior art. For this reason, the present utility model provides a waste gas treatment system that can reuse the heat generated during waste gas treatment, avoid energy waste, thereby improving the energy efficiency of the entire system and reducing energy consumption.
[0005] The waste gas treatment system according to an embodiment of the present utility model includes a filtering mechanism for capturing and collecting particulate matter in the waste gas; a first heat exchange mechanism, the input end of the first heat exchange mechanism is communicated with the output end of the filtering mechanism, and the first heat exchange mechanism is used to preheat the waste gas to be pyrolyzed. The first heat exchange mechanism includes a first gas passage and a second gas passage. A burner is arranged in the first gas passage for pyrolyzing the waste gas. The second gas passage penetrates through the first gas passage, and the input end of the second gas passage is communicated with the output end of the first gas passage. The burner is located between the output end of the first gas passage and the input end of the second gas passage. The waste gas enters the first gas passage, is pyrolyzed and heated by the burner, and then enters the second gas passage; a second heat exchange mechanism, the second heat exchange mechanism is connected to the first heat exchange mechanism, and the second heat exchange mechanism is used to produce high-temperature hot water.
[0006] The waste gas treatment system according to an embodiment of the present utility model has at least the following beneficial effects: filtering the discharged organic waste gas, and then fully pyrolyzing it under the action of the burner to achieve up-to-standard tail gas emission. Using the waste heat of the high-temperature flue gas discharged after pyrolyzing the waste gas to preheat the organic waste gas to be pyrolyzed. At the same time, the waste heat of the high-temperature flue gas generates high-temperature hot water through the heat exchanger for production use. While ensuring the up-to-standard emission of the flue gas, it saves the thermal energy consumed by pyrolysis and improves the energy utilization efficiency.
[0007] According to some embodiments of the present utility model, the first heat exchange mechanism further includes a guiding component arranged in the first gas passage for guiding the flow of the waste gas.
[0008] According to some embodiments of the present invention, the guide assembly includes a plurality of guide plates, which are staggeredly arranged in the first air channel along the flow direction of the exhaust gas, and the exhaust gas is evenly distributed in the first air channel under the action of the plurality of guide plates.
[0009] According to some embodiments of the utility model, the second heat exchange mechanism includes: a third air channel, the input end of the third air channel is connected to the output end of the second air channel; a water channel, the water channel is arranged in the third air channel, and the water in the water channel is heated by the high-temperature exhaust gas in the third air channel.
[0010] According to some embodiments of the present invention, a heat-insulating portion is provided on the outer wall of the first air channel, and the heat-insulating portion is used to prevent heat loss of the exhaust gas.
[0011] According to some embodiments of the present invention, the heat-insulating portion includes a heat-insulating layer, a heat-reflecting layer and a protective layer, and the heat-insulating layer, the heat-reflecting layer and the protective layer are sequentially wrapped on the outer wall of the first air channel from the inside to the outside.
[0012] According to some embodiments of the present invention, the first gas channel and the second gas channel are both horizontally arranged cylindrical, the second gas channel is coaxially arranged with the first gas channel, the third gas channel is located at one end of the second gas channel, and the burner is located on the second gas channel at the opposite end of the third channel.
[0013] According to some embodiments of the utility model, the filtering mechanism includes: a filter chamber, the output end of the filter chamber is connected to the input end of the first air channel; a plurality of filter plates, the plurality of filter plates are evenly arranged on the cavity wall of the filter chamber along the flow direction of the exhaust gas, and the filter plates are used to capture particulate matter in the exhaust gas.
[0014] According to some embodiments of the utility model, the filter mechanism also includes a pull-out assembly, the number of the pull-out assemblies corresponds to the number of filter plates, each filter plate is correspondingly provided with a pull-out assembly, the pull-out assembly is connected to the cavity wall of the filter cavity, and the pull-out assembly is used to realize the replacement of the filter plate.
[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;
[0017] Figure 1 This is a schematic diagram of the structure of the exhaust gas treatment system according to an embodiment of the utility model;
[0018] Figure 2 for Figure 1 Schematic diagram of the structure of the filtering mechanism.
[0019] Reference numerals:
[0020] Filter mechanism 100, filter chamber 110, filter plate 120, pull-out assembly 130;
[0021] First heat exchange mechanism 200, first gas passage 210, heat preservation part 211, second gas passage 220, burner 230, guiding assembly 240, flow guiding plate 241;
[0022] Second heat exchange mechanism 300, third gas passage 310, water passage 320. Detailed implementation manners
[0023] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model. However, it should not be construed as a limitation on the protection scope of the present utility model.
[0024] In the description of the present utility model, it should be understood that with respect to the orientation description, such as the upper, lower, front, rear, left, right, etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present utility model.
[0025] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more. Understanding greater than, less than, exceeding, etc. does not include the present number, and understanding above, below, within, etc. includes the present number. If there is a description of the first time, the second time, etc., it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0026] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.
[0027] Refer to Figures 1 to 2 Describe an exhaust gas treatment system according to an embodiment of the present utility model.
[0028] As Figures 1 to 2As shown in the figure, the waste gas treatment system includes a filtering mechanism 100 for capturing and collecting particulate matter in the waste gas; a first heat exchange mechanism 200, the input end of the first heat exchange mechanism 200 is communicated with the output end of the filtering mechanism 100, and the first heat exchange mechanism 200 is used for preheating the waste gas to be pyrolyzed. The first heat exchange mechanism 200 includes a first gas channel 210 and a second gas channel 220. A burner 230 is arranged in the first gas channel 210 for pyrolyzing the waste gas. The second gas channel 220 penetrates through the first gas channel 210, and the input end of the second gas channel 220 is communicated with the output end of the first gas channel 210. The burner 230 is located between the output end of the first gas channel 210 and the input end of the second gas channel 220. The waste gas enters the first gas channel 210, is pyrolyzed and heated up by the burner 230, and then enters the second gas channel 220; a second heat exchange mechanism 300 is connected to the first heat exchange mechanism 200 and is used for producing high-temperature hot water.
[0029] As Figure 1 shown, the input end of the first gas channel 210 is communicated with the output end of the filtering mechanism 100, the right end of the first gas channel 210 is communicated with the second gas channel 220, the second gas channel 220 penetrates through the first gas channel 210, and the burner 230 is arranged at the right end of the first gas channel 210, that is, the burner 230 is located at the junction of the first gas channel 210 and the second gas channel 220. The output end of the first heat exchange mechanism 200 is communicated with the input end of the second heat exchange mechanism 300, and the first heat exchange mechanism 200 can exchange heat with the second heat exchange mechanism 300. Thus, the discharged organic waste gas is filtered, and then fully pyrolyzed under the action of the burner 230 to achieve up-to-standard discharge of the tail gas. The waste heat of the high-temperature flue gas discharged after the pyrolysis of the waste gas is used to preheat the organic waste gas to be pyrolyzed. At the same time, the waste heat of the high-temperature flue gas generates high-temperature hot water through the heat exchanger for production use, ensuring the up-to-standard discharge of the flue gas while saving the heat energy consumed by pyrolysis and improving the energy utilization efficiency.
[0030] In some specific embodiments of the present invention, the first heat exchange mechanism 200 further includes a guiding assembly 240 arranged in the first gas channel 210 for guiding the flow of the waste gas.
[0031] In some specific embodiments of the present invention, the guiding assembly 240 includes a plurality of guide plates 241 arranged in the first gas channel 210 in a staggered manner along the flow direction of the waste gas, and the waste gas is evenly distributed in the first gas channel 210 under the action of the plurality of guide plates 241.
[0032] As Figure 1As shown, a plurality of flow guiding plates 241 are arranged in sequence in the left - right direction, and the plurality of flow guiding plates 241 are arranged staggeredly in the left - right direction to form a circuitous exhaust gas flow channel. Specifically, the staggeredly arranged flow guiding plates 241 can change the flow direction and path of the exhaust gas in the first gas channel 210, so as to increase the surface area of heat transfer and enhance the heat exchange efficiency between the fluid and the heat exchange surface. At the same time, the staggered flow guiding plates 241 can guide the fluid to generate turbulence in the heat exchange channel, promote the mixing and uniform distribution of the fluid, reduce the dead - end and short - circuit phenomena when the fluid flows through the heat exchange channel, ensure that the fluid can fully contact the heat exchange surface, and improve the overall heat transfer effect.
[0033] In this specific embodiment, the flow guiding plate 241 is a fan - shaped structure sleeved on the outer wall of the second gas channel 220. The inner diameter of the flow guiding plate 241 is tightly connected to the outer wall of the second gas channel 220, and the outer diameter is tightly connected to the inner wall of the first gas channel 210 to form a wall surface to block the flow of exhaust gas and guide the exhaust gas to flow out from the unobstructed direction.
[0034] In some specific embodiments of the present utility model, the second heat exchange mechanism 300 includes: a third gas channel 310, the input end of the third gas channel 310 is communicated with the output end of the second gas channel 220; a water channel 320, the water channel 320 is arranged in the third gas channel 310, and the water in the water channel 320 is heated by the high - temperature exhaust gas in the third gas channel 310.
[0035] As Figure 1 shown, both the third gas channel 310 and the water channel 320 are located at the left end of the first heat exchange mechanism 200. Among them, the input end of the third gas channel 310 is communicated with the output end of the second gas channel 220, and the water channel 320 is arranged in a meandering manner in the third gas channel 310. Thus, the high - temperature exhaust gas in the third gas channel 310 exchanges heat with the cold water in the water channel 320, and the cold water in the water channel 320 absorbs heat, and the temperature of the cold water rises to become high - temperature hot water, thereby realizing the recovery of the waste heat of the exhaust gas, enabling the thermal energy released by the high - temperature exhaust gas to be fully utilized, effectively reducing energy consumption, and greatly reducing energy waste.
[0036] In some specific embodiments of the present utility model, a heat insulation part 211 is arranged on the outer wall of the first gas channel 210, and the heat insulation part 211 is used to prevent the heat loss of the exhaust gas.
[0037] In some specific embodiments of the present utility model, the heat insulation part 211 includes a heat insulation layer, a heat reflection layer, and a protective layer. The heat insulation layer, the heat reflection layer, and the protective layer are sequentially wrapped from the inside out on the outer wall of the first gas passage 210. The heat insulation layer, the heat reflection layer, and the protective layer are sequentially wound from the inside out on the first gas passage 210. In this specific embodiment, the heat insulation layer is an aerogel layer or a calcium silicate layer, the heat reflection layer is an aluminum foil cloth, and the protective layer is any one of high-density polyethylene, fiberglass auxiliary fiber, galvanized iron sheet, aluminum sheet, stainless steel plate, PAP, and asphalt glass cloth. Thus, through layer-by-layer protection, it can be ensured that the heat loss in the first gas passage 210 is reduced, so as to improve the waste heat effect of the waste gas in the first gas passage 210 and further reduce the waste of heat.
[0038] In some specific embodiments of the present utility model, both the first gas passage 210 and the second gas passage 220 are horizontally arranged cylinders, the second gas passage 220 is coaxially arranged with the first gas passage 210, the third gas passage 310 is located at one end of the second gas passage 220, and the burner 230 is located at the opposite end of the second gas passage 220 from the third passage.
[0039] In some specific embodiments of the present utility model, the filtering mechanism 100 includes: a filtering chamber 110, the output end of the filtering chamber 110 is communicated with the input end of the first gas passage 210; a plurality of filtering plates 120, the plurality of filtering plates 120 are uniformly arranged on the chamber wall of the filtering chamber 110 along the flow direction of the waste gas, and the filtering plates 120 are used to capture the particulate matter in the waste gas.
[0040] As Figure 2 shown, the output end of the filtering chamber 110 is communicated with the output end of the first gas passage 210, a plurality of filtering plates 120 are arranged in the filtering chamber 110 along the flow direction of the waste gas, and the filtering coefficient of each filtering plate 120 is different. In this specific embodiment, three filtering plates 120 are provided, which are a coarse filtering plate 120, a medium filtering plate 120, and a fine filtering plate 120 along the flow direction of the waste gas. In the initial filtering stage, coarse filtering is carried out with a larger pore diameter to remove larger particulate matter and impurities in the flue gas, ensure that the particulate matter can smoothly pass through the filtering medium, and reduce the resistance and pressure drop. After coarse filtering, in the process of further purifying the flue gas, medium filtering is carried out with a smaller pore diameter to remove smaller particulate matter, soot, and fine solid particles. Finally, filtering is carried out with an even smaller pore diameter, aiming to remove tiny particles such as fine particles and suspended matter in the flue gas, thereby realizing the staged filtering of the flue gas to further achieve the purpose of meeting the emission standards.
[0041] In some specific embodiments of the present utility model, the filtering mechanism 100 further includes a pulling component 130. The number of the pulling components 130 corresponds to the number of the filtering plates 120. One pulling component 130 is correspondingly arranged for each filtering plate 120. The pulling component 130 is connected to the chamber wall of the filtering chamber 110, and the pulling component 130 is used to replace the filtering plate 120.
[0042] As Figure 2 shown, through holes are formed in the chamber wall of the filtering chamber 110. The number of the through holes corresponds to that of the filtering plates 120. One through hole is correspondingly formed on the same side of all the filtering plates 120, and one pulling component 130 is correspondingly connected to each filtering plate 120. Specifically, the pulling component 130 includes a connecting piece, a locking piece and a handle. The connecting piece is arranged at one end of the filtering plate 120, the handle is arranged at the end of the connecting piece opposite to the filtering plate 120, and a plurality of locking pieces are provided. In this specific embodiment, four locking pieces are provided, and the four locking pieces are respectively arranged at the four corners of the connecting piece. Thus, by pulling the handle, the filtering plate 120 can be pulled out or inserted, so as to realize the detachable and replaceable connection of the filtering plate 120. After the filtering plate 120 is inserted, the filtering plate 120 is locked in the filtering chamber 110 by using the locking piece, and the replacement of the filtering plate 120 is completed.
[0043] It should be noted that if multiple filtering plates 120 all have the same specification of filtering gap, since the filtering plate 120 on the side close to the waste gas input end will first contact the waste gas and its service life is shorter than that of the other filtering plates 120, the positions of the multiple filtering plates 120 can be replaced to ensure that each filtering plate 120 can be fully utilized, thereby further prolonging the service life of all the filtering plates 120, which conforms to the concept of environmental protection production.
[0044] The embodiments of the present utility model have been described in detail above with reference to the drawings. However, the present utility model is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present utility model within the knowledge scope of those of ordinary skill in the art.
Claims
1. An exhaust gas treatment system, characterized in that, Comprising: A filtering mechanism (100), which is used to capture and collect particulate matter in the waste gas; A first heat exchange mechanism (200), the input end of the first heat exchange mechanism (200) is communicated with the output end of the filtering mechanism (100), the first heat exchange mechanism (200) is used to preheat the waste gas to be pyrolyzed, the first heat exchange mechanism (200) includes a first gas channel (210) and a second gas channel (220), a burner (230) is arranged in the first gas channel (210), the burner (230) is used to pyrolyze the waste gas, the second gas channel (220) is arranged in the first gas channel (210), the input end of the second gas channel (220) is communicated with the output end of the first gas channel (210), the burner (230) is located between the output end of the first gas channel (210) and the input end of the second gas channel (220), the waste gas enters the first gas channel (210), and after being pyrolyzed and heated by the burner (230), it enters the second gas channel (220); A second heat exchange mechanism (300), the second heat exchange mechanism (300) is connected to the first heat exchange mechanism (200), and the second heat exchange mechanism (300) is used to produce high-temperature hot water.
2. The waste gas treatment system according to claim 1, characterized in that, The first heat exchange mechanism (200) further includes a guiding component (240), the guiding component (240) is arranged in the first gas channel (210), and the guiding component (240) is used to guide the flow of the waste gas.
3. The exhaust gas treatment system according to claim 2, wherein The guiding component (240) includes a plurality of flow guiding plates (241), and the plurality of flow guiding plates (241) are arranged in the first gas channel (210) in a staggered manner along the waste gas flow direction, and the waste gas is evenly distributed in the first gas channel (210) under the action of the plurality of flow guiding plates (241).
4. The exhaust gas treatment system according to claim 1, characterized in that, The second heat exchange mechanism (300) includes: A third gas channel (310), the input end of the third gas channel (310) is communicated with the output end of the second gas channel (220); A water channel (320), the water channel (320) is arranged in the third gas channel (310), and the water in the water channel (320) is heated by the high-temperature waste gas in the third gas channel (310).
5. The exhaust gas treatment system according to claim 1, characterized in that, A heat insulation part (211) is arranged on the outer wall of the first gas channel (210), and the heat insulation part (211) is used to prevent the heat loss of the waste gas.
6. The exhaust gas treatment system according to claim 5, characterized in that The heat insulation part (211) includes a heat insulation layer, a heat reflection layer and a protection layer, and the heat insulation layer, the heat reflection layer and the protection layer are sequentially wrapped on the outer wall of the first gas channel (210) from the inside to the outside.
7. The exhaust gas treatment system according to claim 4, wherein Both the first gas channel (210) and the second gas channel (220) are horizontally arranged cylindrical shapes, the second gas channel (220) is coaxially arranged with the first gas channel (210), the third gas channel (310) is located at one end of the second gas channel (220), and the burner (230) is located at the opposite end of the second gas channel (220) from the third gas channel (310).
8. The exhaust gas treatment system according to claim 1, characterized in that, The filtering mechanism (100) includes: A filtering chamber (110), the output end of the filtering chamber (110) being in communication with the input end of the first gas passage (210); A plurality of filter plates (120), the plurality of filter plates (120) being uniformly arranged on the chamber wall of the filtering chamber (110) along the flow direction of the exhaust gas, and the filter plates (120) being used for capturing particulate matter in the exhaust gas.
9. The exhaust gas treatment system according to claim 8, wherein, The filtering mechanism (100) further includes a pulling component (130), the number of the pulling components (130) corresponding to the number of the filter plates (120), one pulling component (130) being correspondingly arranged for each filter plate (120), the pulling component (130) being connected to the chamber wall of the filtering chamber (110), and the pulling component (130) being used for replacing the filter plate (120).