Industrial waste gas waste heat recovery device

Abstract

The utility model discloses an industrial waste gas waste heat recovery device, which belongs to the field of industrial waste gas treatment and comprises a box body, a gas inlet pipe is arranged at one end of the box body, a gas outlet pipe is arranged at the other end of the box body, and connecting flanges are arranged at the ends of the gas inlet pipe and the gas outlet pipe. A water inlet barrel is vertically fixed to the side, close to the air inlet pipe, of the side surface of the box body, a water outlet barrel is further arranged on the side surface of the box body, the water inlet barrel and the water outlet barrel are arranged on the same side, butt joint valves are arranged at the tops of the water inlet barrel and the water outlet barrel, U-shaped heat exchange pipes are evenly laid in the box body, and a plurality of flow channels are formed between the U-shaped pipes and the water inlet barrel. A flow channel is formed in the water outlet cylinder, a plug barrel is arranged in the flow channel, the size of the notch groove is controlled by controlling the plug barrel so as to control the flow speed of the single U-shaped pipe, the flow speed of liquid in the U-shaped pipe at the center position is high, the flow speed of liquid in the U-shaped pipe at the edge is low through an external mechanism, and therefore it is guaranteed that the temperature of medium liquid flowing back into the water outlet cylinder is consistent.

Description

Technical Field

[0001] The utility model relates to the field of industrial waste gas treatment, and more specifically, to an industrial waste gas waste heat recovery device. Background Art

[0002] Waste heat recovery from industrial exhaust gas is an important energy-saving and environmental protection measure, which can save energy, reduce environmental pollution, and improve economic benefits. In industrial waste gas treatment, RTO, i.e., regenerative thermal oxidation furnace, is often used to oxidize and decompose the waste gas into harmless substances such as carbon dioxide and water by high temperature. In this process, the treated gas is in a high temperature state. At this time, discharging the gas will cause a certain amount of waste, so it is necessary to recover its waste heat. In the waste heat recovery process, U-shaped pipes are mostly laid in the waste gas pipeline, and medium liquid is passed into the U-shaped pipe to absorb the temperature in the waste gas, thereby achieving the purpose of waste heat recovery. However, in order to lay the U-shaped pipe, the shell part of the device is often larger than the waste gas pipe, which causes the U-shaped pipe placed in the center to heat up quickly, while the U-shaped pipe placed at the edge heats up slowly, resulting in uneven heating and the inability to accurately control the temperature. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide an industrial waste gas waste heat recovery device, which can adjust the flow rate of the medium liquid inside the U-shaped tube at multiple different positions to ensure uniform heating of the medium liquid.

[0005] 2. Technical solution

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A waste heat recovery device for industrial waste gas comprises a box body, one end of the box body is provided with an air inlet pipe, and the other end of the box body is provided with an air outlet pipe, the ends of the air inlet pipe and the air outlet pipe are both provided with connecting flanges, a water inlet cylinder is vertically fixed on the side surface of the box body close to the air inlet pipe, and a water outlet cylinder is also provided on the side surface of the box body, the water inlet cylinder and the water outlet cylinder are on the same side, and docking valves are provided on the top of the water inlet cylinder and the water outlet cylinder, and U-shaped heat exchange tubes are evenly laid inside the box body, and two ends of a plurality of U-shaped heat exchange tubes are respectively connected with the water inlet cylinder and the water outlet cylinder, wherein the connecting point between the U-shaped heat exchange tube and the water inlet cylinder is set as a flow channel, and a plug cylinder is slidably installed inside the flow channel, and the plug cylinder is open at one end facing the U-shaped heat exchange tube, and a notch groove is opened on the surface of the plug cylinder, and a connecting rod is provided at the end of the plug cylinder away from the U-shaped heat exchange tube, and the connecting rod horizontally penetrates the outer surface of the water inlet cylinder, and an I-head is provided at the end of the connecting rod away from the plug cylinder, and the I-head is placed on the outside of the water inlet cylinder.

[0008] Furthermore, two extension plates are provided on the upper and lower outer surfaces of the water inlet cylinder, a fixing rod is vertically provided between the two extension plates on the same side, and the connecting rod is evenly placed between the two fixing rods.

[0009] Furthermore, a sliding block is slidably mounted on the surface of the fixing rod, and a connecting plate is hinged at the end of the sliding block.

[0010] Furthermore, an adjusting threaded rod is rotatably mounted at the center of the outer surface of the water inlet cylinder, an adjusting block is screwed on the surface of the adjusting threaded rod, and one end of the two connecting plates away from the slider is respectively hinged on the adjusting block.

[0011] Furthermore, a through groove is provided on the surface of the connecting plate, and a plurality of I-shaped heads are respectively clamped in the inner sides of the through groove.

[0012] Furthermore, a filter plate is provided at one end of the box body near the air inlet pipe, the top of the filter plate is flush with the upper surface of the box body, and a handle is provided on the top of the filter plate.

[0013] Furthermore, a support plate is provided on the inner wall of the box body on the side facing away from the water inlet cylinder, and the plurality of U-shaped heat exchange tubes are all clamped on the support plate.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the utility model has the following advantages: the utility model provides an industrial waste gas waste heat recovery device, a plurality of flow channels are arranged between the U-shaped tube and the water inlet cylinder, and a plug cylinder is arranged in the flow channel, and the plug cylinder is controlled to control the size of the notch groove to control the flow rate of a single U-shaped tube, and an external mechanism is used to make the liquid flow rate inside the U-shaped tube at the center position fast, while the liquid flow rate inside the U-shaped tube at the edge is slow, thereby ensuring that the temperature of the medium liquid flowing back into the water outlet cylinder is consistent, so as to facilitate precise control of the temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the box body of the utility model;

[0017] Figure 2 This is a schematic diagram of the transverse top-sectional structure of the box body of the utility model;

[0018] Figure 3 For the utility model Figure 1 A schematic diagram of the enlarged structure of area A;

[0019] Figure 4 For the utility model Figure 1 Schematic diagram of the enlarged structure of area B;

[0020] Figure 5 This is a schematic diagram of the plug structure of the utility model.

[0021] Explanation of the numbers in the figure: 1. Box body; 2. Air inlet pipe; 3. Air outlet pipe; 4. Filter plate; 401. Handle; 5. Water inlet cylinder; 6. Water outlet cylinder; 501. Flow channel; 7. Docking valve; 8. U-shaped heat exchange tube; 9. Support plate; 10. Extension plate; 11. Fixing rod; 12. Slider; 13. Adjusting threaded rod; 131. Adjusting block; 14. Connecting plate; 141. Through groove; 15. Plug cylinder; 151. Notch groove; 16. Connecting rod; 17. I-head. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0023] Example:

[0024] See also Figure 1 , Figure 2 and Figure 5 As shown, an industrial waste gas waste heat recovery device includes a box body 1, an air inlet pipe 2 is arranged at one end of the box body 1, and an air outlet pipe 3 is arranged at the other end of the box body 1, and the ends of the air inlet pipe 2 and the air outlet pipe 3 are provided with connecting flanges to facilitate the connection of the device with the waste gas discharge pipeline so that the waste gas flows through the device, and a water inlet cylinder 5 is vertically fixed on the side surface of the box body 1 close to the air inlet pipe 2, and a water outlet cylinder 6 is also arranged on the side surface of the box body 1. The water inlet cylinder 5 and the water outlet cylinder 6 are on the same side, and docking valves 7 are arranged on the top of the water inlet cylinder 5 and the water outlet cylinder 6 for easy control, and U-shaped heat exchange tubes 8 are evenly laid inside the box body 1, and the U-shaped heat exchange tubes 8 are evenly distributed up and down, and the two ends of multiple U-shaped heat exchange tubes 8 are respectively connected with the water inlet cylinder 5 and the water outlet cylinder 6, so that the medium liquid such as refrigerant and other liquids can be diverted to the inside of multiple U-shaped heat exchange tubes 8 through the water inlet cylinder 5, and absorb the heat in the waste gas. The amount of heat is then refluxed into the water outlet tube 6 and then flows out, wherein the connection point between the U-shaped heat exchange tube 8 and the water inlet tube 5 is set as a flow channel 501, and a plug cylinder 15 is slidably installed inside the flow channel 501. The plug cylinder 15 is open at one end facing the U-shaped heat exchange tube 8, and a notch groove 151 is opened on the surface of the plug cylinder 15. The medium liquid flows into the flow channel 501 through the notch groove 151, and then flows into the U-shaped heat exchange tube 8. Then, the flow rate of the medium inside a single U-shaped heat exchange tube 8 can be controlled by controlling the opening size of the notch groove 151. A connecting rod 16 is set at the end of the plug cylinder 15 away from the U-shaped heat exchange tube 8. The connecting rod 16 horizontally penetrates the outer surface of the water inlet tube 5, and an I-head 17 is set at the end of the connecting rod 16 away from the plug cylinder 15. The I-head 17 is placed on the outside of the water inlet tube 5 so that the position of the plug cylinder 15 can be controlled by externally controlling the I-head 17.

[0025] Please refer to Figure 1 and Figure 3 As shown, two extension plates 10 are provided on the upper and lower outer surfaces of the water inlet cylinder 5, a fixing rod 11 is vertically provided between the two extension plates 10 on the same side, a connecting rod 16 is evenly placed between the two fixing rods 11, a slider 12 is slidably installed on the surface of the fixing rod 11, a connecting plate 14 is hinged at the end of the slider 12, the slider 12 can move up and down, so that when the angle of the connecting plate 14 changes, the distance difference can be compensated by the sliding of the slider 12, and when the angle of the connecting plate 14 increases, the slider 12 can move to the center position to ensure the smoothness of the adjustment of the connecting plate 14.

[0026] Please refer to Figure 1 and Figure 4 As shown, an adjusting threaded rod 13 is rotatably installed at the center of the outer surface of the water inlet cylinder 5, and an adjusting block 131 is screwed on the surface of the adjusting threaded rod 13. The ends of the two connecting plates 14 facing away from the slider 12 are respectively hinged on the adjusting blocks 131. The adjusting threaded rod 13 is rotated to control the distance between the adjusting blocks 131 and the surface of the water inlet cylinder 5. When the adjusting block 131 moves outward, the angle of the connecting plate 14 can be increased, so that the distance of the area close to the center position is increased.

[0027] Among them, a through groove 141 is opened on the surface of the connecting plate 14, and a plurality of I-heads 17 are respectively stuck in the inner side of the through groove 141. The position of the connecting rod 16 is controlled by the connecting plate 14, so that the outward pulling distance of the I-head 17 close to the center position is greater than the distance at the edge, and then the opening size of the notch groove 151 at the center position is larger than the edge, so that the internal flow of the U-shaped heat exchange tube 8 placed at the center position is greater than the flow at the edge.

[0028] Please refer to Figure 1 and Figure 2 As shown, a filter plate 4 is provided at one end of the box body 1 near the air inlet pipe 2, and the top of the filter plate 4 is flush with the upper surface of the box body 1. A handle 401 is provided on the top of the filter plate 4 to filter the incoming exhaust gas and prevent particles in the exhaust gas from damaging the U-shaped heat exchange tube 8.

[0029] Please refer to Figure 2 As shown, a support plate 9 is provided on the inner wall of the box body 1 on the side facing away from the water inlet cylinder 5 , and a plurality of U-shaped heat exchange tubes 8 are clamped on the support plate 9 to ensure the stability of the U-shaped heat exchange tubes 8 .

[0030] Working principle: The device is connected to the exhaust pipe through the flanges at both ends of the air inlet pipe 2 and the air outlet pipe 3, and is connected to the water inlet cylinder 5 through the waste heat recovery pipe, so that the medium liquid flows into the U-shaped heat exchange tube 8 through the water inlet cylinder 5 to absorb the heat of the exhaust gas and then is discharged through the water outlet cylinder 6 to achieve the effect of waste heat recovery of the exhaust gas. At the same time, the exhaust gas will first be filtered by the filter plate 4 when passing through the inside of the box 1 to prevent the particles in the exhaust gas from hitting the U-shaped heat exchange tube 8 and to prevent the particles and dust attached to the surface of the U-shaped heat exchange tube 8 from affecting the heat absorption effect. When the medium liquid flows to the U-shaped heat exchange tube 8 through the water inlet cylinder 5, it will flow through the flow channel 501, and the flow channel 501 is blocked by the plug cylinder 15, so the medium liquid will definitely flow through the notch groove 151. By controlling the relative sliding of the plug cylinder 15 and the flow channel 501, the size of the opening of the notch groove 151 can be controlled to control the flow rate of the medium liquid inside the U-shaped heat exchange tube 8 at different positions. The rotating adjustment threaded rod 13 can control the distance between the adjustment block 131 and the water inlet cylinder 5, and then control the inclination angle of the connecting plate 14, so that the distance between the end of the connecting plate 14 close to the adjustment threaded rod 13 and the water inlet cylinder 5 increases, so that the plug cylinder 15 is driven by the cooperation of the through groove 141 and the I-head 17, so that the I-head 17 close to the center position is pulled outward, and then the notch groove 151 close to the center position has a larger opening, while the notch groove 151 far from the center position has a smaller opening, and then the internal flow of the U-shaped heat exchange tube 8 at the center position is large, and the flow at both ends is small.

[0031] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. An industrial waste heat recovery device, comprising a box body (1), an air inlet pipe (2) is arranged at one end of the box body (1), and an air outlet pipe (3) is arranged at the other end of the box body (1). Connecting flanges are arranged at the ends of the air inlet pipe (2) and the air outlet pipe (3). It is characterized in that: A water inlet cylinder (5) is vertically fixed on a side surface of the box body (1) close to the air inlet pipe (2), and a water outlet cylinder (6) is also arranged on the side surface of the box body (1). The water inlet cylinder (5) and the water outlet cylinder (6) are on the same side, and a docking valve (7) is arranged on the top of the water inlet cylinder (5) and the water outlet cylinder (6). U-shaped heat exchange tubes (8) are evenly laid inside the box body (1), and the two ends of a plurality of the U-shaped heat exchange tubes (8) are respectively connected to the water inlet cylinder (5) and the water outlet cylinder (6), wherein the connection point between the U-shaped heat exchange tube (8) and the water inlet cylinder (5) is arranged as a flow A flow channel (501) is provided, wherein a plug barrel (15) is slidably mounted inside the flow channel (501), wherein one end of the plug barrel (15) facing the U-shaped heat exchange tube (8) is open, and a notch groove (151) is provided on the surface of the plug barrel (15), and a connecting rod (16) is provided at the end of the plug barrel (15) away from the U-shaped heat exchange tube (8), and the connecting rod (16) horizontally penetrates the outer surface of the water inlet cylinder (5), and an I-shaped head (17) is provided at the end of the connecting rod (16) away from the plug barrel (15), and the I-shaped head (17) is placed on the outer side of the water inlet cylinder (5).

2. An industrial waste heat recovery device according to claim 1, characterized in that: Two extension plates (10) are arranged on the upper and lower outer surfaces of the water inlet cylinder (5), a fixing rod (11) is vertically arranged between the two extension plates (10) on the same side, and the connecting rod (16) is evenly arranged between the two fixing rods (11).

3. The industrial waste heat recovery device according to claim 2, wherein: A sliding block (12) is slidably mounted on the surface of the fixing rod (11), and a connecting plate (14) is hingedly connected to the end of the sliding block (12).

4. An industrial waste heat recovery device according to claim 3, characterized in that: An adjusting threaded rod (13) is rotatably mounted at the center of the outer surface of the water inlet cylinder (5), an adjusting block (131) is screwed onto the surface of the adjusting threaded rod (13), and ends of the two connecting plates (14) facing away from the slider (12) are respectively hinged on the adjusting blocks (131).

5. An industrial waste heat recovery device according to claim 4, characterized in that: A through slot (141) is provided on the surface of the connecting plate (14), and a plurality of I-shaped heads (17) are respectively clamped inside the through slot (141).

6. The industrial waste gas waste heat recovery device according to claim 1, wherein: A filter plate (4) is arranged at one end of the box body (1) near the air inlet pipe (2); the top of the filter plate (4) is flush with the upper surface of the box body (1); and a handle (401) is arranged at the top of the filter plate (4).

7. An industrial waste heat recovery device according to claim 1, characterized in that: A support plate (9) is provided on the inner wall of the box body (1) on the side facing away from the water inlet cylinder (5), and the plurality of U-shaped heat exchange tubes (8) are all clamped on the support plate (9).

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