Heat exchanger for waste gas treatment

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a heat exchanger for waste gas treatment. According to the technical scheme, the device comprises a water storage tank used for storing water, one side of the water storage tank is communicated with a water injection pipe and a water outlet pipe, and the water injection pipe is located above the water outlet pipe; the heat exchange pipes are arranged in the water injection pipe and used for heat exchange, the two ends of each heat exchange pipe communicate with an air inlet pipe and an air outlet pipe correspondingly, the air inlet pipes and the air outlet pipes penetrate through the water storage tank, and the air outlet pipes extend to the outside; the sealing box is located on one side of the water storage tank, and the air inlet pipe is located in the sealing box. The heat exchange efficiency can be adjusted according to the waste gas and hot air flow, different hot air flow working conditions are effectively adapted, the heat energy recovery efficiency is improved, the waste gas inlet amount can be reasonably controlled, waste gas dispersion, too low flow speed and local retention in a pipe are prevented, the phenomena of dust deposition and blockage are avoided, and the equipment maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger technical field especially relates to a heat exchanger for waste gas treatment. BACKGROUND

[0002] In today's industrial production field, waste gas treatment is a crucial link, concerning environmental protection and sustainable development. Many industries such as chemical industry, metallurgy, coating, etc. will produce a large amount of waste gas carrying heat in the production process. If it is directly discharged, not only energy is wasted, but also heat pollution and harmful gas pollution may be caused to the atmosphere. As a key equipment in the waste gas treatment system, the main function of the heat exchanger is to realize heat exchange between the waste gas and other media, so as to achieve the purpose of recovering heat energy and reducing the waste gas emission temperature. The existing heat exchanger for waste gas treatment has variable flow of hot air. When the flow of hot air is large, if the number of hot air pipes is fixed and limited, the residence time of waste gas in the heat exchanger is too short, and the heat cannot be fully transferred to the cold medium, resulting in low heat recovery efficiency and waste of a large amount of waste heat. When the flow of hot air is small, too many hot air pipes will disperse the waste gas, and the flow rate is too low, which may even cause local retention in the pipe, causing dust accumulation and blockage, and increasing the equipment maintenance cost. Therefore, the utility model provides a heat exchanger for waste gas treatment. SUMMARY

[0003] The utility model discloses a heat exchanger for waste gas treatment, which can solve the problems of variable flow of hot air in the heat exchanger for waste gas treatment. When the flow of hot air is large, if the number of hot air pipes is fixed and limited, the residence time of waste gas in the heat exchanger is too short, and the heat cannot be fully transferred to the cold medium, resulting in low heat recovery efficiency and waste of a large amount of waste heat. When the flow of hot air is small, too many hot air pipes will disperse the waste gas, and the flow rate is too low, which may even cause local retention in the pipe, causing dust accumulation and blockage, and increasing the equipment maintenance cost.

[0004] The utility model discloses a heat exchanger for waste gas treatment, which can solve the problems of variable flow of hot air in the heat exchanger for waste gas treatment. When the flow of hot air is large, if the number of hot air pipes is fixed and limited, the residence time of waste gas in the heat exchanger is too short, and the heat cannot be fully transferred to the cold medium, resulting in low heat recovery efficiency and waste of a large amount of waste heat. When the flow of hot air is small, too many hot air pipes will disperse the waste gas, and the flow rate is too low, which may even cause local retention in the pipe, causing dust accumulation and blockage, and increasing the equipment maintenance cost.

[0005] Optionally, the adjusting assembly comprises a connecting box fixedly connected with the sealing box through bolts, one end of the connecting box is in communication with an air inlet main pipe, first and second guide rods are fixedly arranged in the connecting box, a sealing guide baffle is movably sleeved on the outer wall of the first and second guide rods, a spring is sleeved on the outer wall of the second guide rod, one end of the spring is fixedly connected with the connecting box, and the other end of the spring is fixedly connected with the sealing guide baffle.

[0006] Optionally, one end of the air outlet pipe is in communication with an air outlet main pipe, one end of the air outlet main pipe is in communication with an air filter, and one end of the air filter is in communication with an air outlet connecting pipe.

[0007] Optionally, the heat exchange pipe is in a serpentine structure.

[0008] Optionally, the connecting box is in a trapezoidal structure.

[0009] Optionally, the sealing guide baffle is bent at an angle of 30-60 degrees.

[0010] Optionally, the air filter is internally provided with multiple filter plates.

[0011] In summary, the present application has at least one of the following beneficial technical effects:

[0012] The hot air entering through the air inlet main pipe pushes the sealing guide baffle to move horizontally on the first and second guide rods, the number of air inlet pipes blocked by the sealing guide baffle is changed, the number of hot air entering the heat exchange pipe is changed, the efficiency of heat exchange can be adjusted according to the size of the exhaust gas hot air flow, different hot air flow conditions can be effectively adapted, the heat energy recovery efficiency is improved, the amount of exhaust gas entering can be reasonably controlled, the dispersion of exhaust gas, the excessively low flow rate and the formation of local retention in the pipe are prevented, the phenomena of ash accumulation and blockage are avoided, and the equipment maintenance cost is reduced.

[0013] Further, the air filter is internally provided with multiple filter plates, the discharged air can be deeply purified, the fine particulate matters and other pollutants in the exhaust gas are effectively removed, the discharged air is more clean and environmentally friendly, meets the environmental emission standards, secondary pollution to subsequent equipment and the surrounding environment is avoided, and the air quality of the equipment surrounding environment is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A structure diagram of a heat exchanger for exhaust gas treatment is given;

[0015] Figure 2 is Figure 1 An internal cross-sectional structure diagram of the water storage tank;

[0016] Figure 3is Figure 1 Internal profile structure schematic view of the adjusting assembly.

[0017] Reference signs:

[0018] 1, water storage tank; 2, water injection pipe; 3, water outlet pipe; 4, heat exchange pipe; 5, air inlet pipe; 6, air outlet pipe; 7, sealing box;

[0019] 8, adjusting assembly; 81, connecting box; 82, air inlet main pipe; 83, first guide rod; 84, second guide rod; 85, sealing guide baffle; 86, spring;

[0020] 9, air outlet main pipe; 10, air filter; 11, air outlet connecting pipe. DETAILED DESCRIPTION

[0021] The technical solutions of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0022] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0023] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0024] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "link", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can through the intermediate medium indirectly connect, can be two element inside the intercommunication. For ordinary skilled person in the art, the above-mentioned term can be understood in the specific meaning in the utility model according to specific circumstances.

[0026] Embodiment

[0027] As Figure 1 and Figure 2 The utility model provides a heat exchanger for waste gas treatment, it includes: the water storage tank 1 for storing water, the water storage tank 1 adopts stainless steel material, and the outside is provided with for insulating layer, can heat preservation to the water in water storage tank 1 after heating, the water storage tank 1 side is connected with the water injection pipe 2 and the water outlet pipe 3, and the water injection pipe 2 is located above the water outlet pipe 3, convenient for the water storage tank 1 in water or water discharge, the heat exchange pipe 4 for heat exchange of multiple for setting in the water injection pipe 2 interior, and multiple heat exchange pipes 4 are equidistant arrangement, can ensure the uniformity of heat exchange, the both ends of heat exchange pipe 4 are connected with the air inlet pipe 5 and the air outlet pipe 6 respectively, the air inlet pipe 5 and the air outlet pipe 6 are through the water storage tank 1, and the air outlet pipe 6 extends to the outside, convenient for waste gas from the heat exchange pipe 4 in the flow, the sealing box 7 in the water storage tank 1 side, and the air inlet pipe 5 is located in the interior of sealing box 7, the one side of sealing box 7 is fixed with the adjusting assembly 8 for controlling waste gas to enter the heat exchange pipe 4 in, convenient for guaranteeing the sealing property in the adjusting assembly 8.

[0028] As Figure 1 and Figure 3 Adjusting assembly 8 includes the connecting box 81 of fixed connection through bolt and sealing box 7, can guarantee the sealing of connecting box 81 and sealing box 7 interior, the one end of connecting box 81 is connected with the air inlet main pipe 82, convenient for with the waste gas pipe connection, makes waste gas enter the connecting box 81, the interior of connecting box 81 is fixed with the first guide rod 83 and the second guide rod 84, and the first guide rod 83 and the second guide rod 84 are located in the same horizontal plane, the outer wall of first guide rod 83 and second guide rod 84 is movably sleeved with sealing guide baffle 85, can sealing guide baffle 85 steady guide horizontal movement, the outer wall of second guide rod 84 is sleeved with spring 86, one end of spring 86 is fixedly connected with connecting box 81, the other end of spring 86 is fixedly connected with sealing guide baffle 85, can make sealing guide baffle 85 reset.

[0029] As Figure 1 and Figure 2As shown, one end of the air outlet pipe 6 is in communication with an air outlet main pipe 9, one end of the air outlet main pipe 9 is in communication with an air filter 10, and one end of the air filter 10 is in communication with an air outlet connecting pipe 11, which can filter and discharge the heat-exchanged waste gas, avoiding pollution of the environment.

[0030] Further, the heat exchange pipe 4 is provided in a serpentine structure, which can increase the time of the waste gas flowing in the heat exchange pipe, so that the heat exchange of the waste gas is more sufficient.

[0031] Secondly, the connecting box 81 is provided in a trapezoidal structure, which facilitates stable horizontal movement of the sealing guide baffle 85.

[0032] Further, the sealing guide baffle 85 is provided in a 30-degree to 60-degree bending structure, which can guide the waste gas to flow into the heat exchange pipe 4 quickly.

[0033] In addition, the air filter 10 is internally provided with multiple filter plates, and the filter plates are coarse filter screens, medium-efficiency filter screens and high-efficiency filter screens, which ensure that the discharged gas meets the environmental emission standards.

[0034] The working principle of the embodiment is as follows: first, a proper amount of water is pre-injected through the water injection pipe 2 on the water storage tank 1. When the waste gas is generated, the waste gas pipe is connected to the air inlet main pipe 82 through bolts, so that the waste gas enters the connecting box 81 through the air inlet main pipe 82. After the waste gas enters the connecting box 81, it impacts the sealing guide baffle 85. Since the sealing guide baffle 85 is provided in a 30-degree to 60-degree bending structure, it provides a specific guide path for the entering waste gas, and cooperates with the spring 86, so that the sealing guide baffle 85 can flexibly adjust the opening and closing degree according to the waste gas pressure. When the waste gas pressure is small, the spring 86 pushes the sealing guide baffle 85 to move towards the air inlet main pipe 82, reducing the flow of waste gas into the heat exchange pipe 4; when the waste gas pressure increases, the waste gas pushes the sealing guide baffle 85 to move outward along the first guide rod 83 and the second guide rod 84, increasing the flow of waste gas into the heat exchange pipe 4, thereby realizing precise control of the amount of waste gas entering.

[0035] The waste gas entering the heat exchange pipe 4 exchanges heat with the water in the water storage tank 1, and the heat of the waste gas is transferred to the water body, and the temperature of the waste gas itself is reduced. The cooled waste gas is discharged through the air outlet pipe 6, the air outlet main pipe 9 connected to one end of the air outlet pipe 6 collects the waste gas, and then the waste gas enters the air filter 10. The multiple filter plates provided inside the air filter 10 intercept and filter the impurities such as dust and particulate matter in the waste gas layer by layer, ensuring that the discharged gas meets the environmental emission standards. The filtered and purified waste gas is finally discharged to the atmospheric environment outside the workshop through the air outlet connecting pipe 11, completing the entire waste gas treatment and heat recovery process, effectively reducing the waste gas emission temperature, improving the energy utilization efficiency of the workshop, and at the same time ensuring that the waste gas meets the emission standards.

[0036] The above specific embodiments are only optional embodiments of the present application, and based on the technical scheme of the present application and the related enlightenment of the above embodiments, the person skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. A heat exchanger for exhaust gas treatment, characterized by, Include: The water storage tank (1) for storing water, one side of the water storage tank (1) is communicated with water injection pipe (2) and water outlet pipe (3), and the water injection pipe (2) is located above the water outlet pipe (3); A plurality of heat exchange pipes (4) for heat exchange are arranged in the water injection pipe (2), both ends of the heat exchange pipe (4) are respectively communicated with air inlet pipe (5) and air outlet pipe (6), the air inlet pipe (5) and the air outlet pipe (6) penetrate the water storage tank (1), and the air outlet pipe (6) extends to the outside; The sealing box (7) is located on one side of the water storage tank (1), and the air inlet pipe (5) is located in the sealing box (7), one side of the sealing box (7) is fixedly provided with an adjusting assembly (8) for controlling exhaust gas into the heat exchange pipe (4).

2. The heat exchanger for exhaust gas treatment according to claim 1, wherein The adjusting assembly (8) includes a connecting box (81) fixedly connected with the sealing box (7) by bolts, one end of the connecting box (81) is communicated with an air inlet main pipe (82), the first guide rod (83) and the second guide rod (84) are fixedly arranged in the connecting box (81), the outer wall of the first guide rod (83) and the second guide rod (84) is movably sleeved with a sealing guide baffle (85), the outer wall of the second guide rod (84) is sleeved with a spring (86), one end of the spring (86) is fixedly connected with the connecting box (81), the other end of the spring (86) is fixedly connected with the sealing guide baffle (85).

3. The heat exchanger for exhaust gas treatment according to claim 1, wherein One end of the air outlet pipe (6) is communicated with an air outlet main pipe (9), one end of the air outlet main pipe (9) is communicated with an air filter (10), one end of the air filter (10) is communicated with an air outlet connecting pipe (11).

4. The heat exchanger for exhaust gas treatment according to claim 1, wherein The heat exchange pipe (4) is arranged in a serpentine structure.

5. The heat exchanger for exhaust gas treatment according to claim 2, wherein The connecting box (81) is arranged in a trapezoidal structure.

6. The heat exchanger for exhaust gas treatment according to claim 2, wherein The sealing guide baffle (85) is arranged in a 30-60 degree bending structure.

7. The heat exchanger for exhaust gas treatment according to claim 3, wherein The air filter (10) is provided with a plurality of filter plates in the inside.

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