A cryogenic exhaust gas separation apparatus

Abstract

The utility model discloses a low temperature waste gas separation equipment, including processing cylinder, the inner top of processing cylinder is provided with the air inlet pipe, the bottom space right side of processing cylinder is provided with the exhaust pipe, the inner bottom of processing cylinder is provided with the liquid discharge pipe, heat exchange mechanism, heat exchange mechanism includes the spiral guide temperature pipe of horizontal setting in processing cylinder inside, both ends of spiral guide temperature pipe all are fixedly connected with the rotating pipe, two rotating pipe's another end all are with the inner wall rotation connection of processing cylinder, two rotating pipe's another end all are through the inner wall of processing cylinder to install the swivel joint, rotating mechanism, rotating mechanism is used for improving the heat exchange effect of heat exchange mechanism. The equipment in actual use, heat exchange part is in the rotation, utilizes this mode, can avoid the condition of the appearance of the worse heat exchange effect that its upper adhesion more liquid organic material, improves the overall heat transfer.

Description

Technical Field

[0001] This utility model relates to the field of waste gas separation technology, and in particular to a low-temperature waste gas separation device. Background Technology

[0002] During industrial production, large amounts of waste gas are emitted into the environment, with volatile organic compounds (VOCs) and water vapor being common components. VOCs not only cause serious air pollution, leading to environmental problems such as photochemical smog and haze, but also pose significant health risks, with some VOCs being carcinogenic. Water vapor, if not properly treated, can also affect subsequent processes and equipment operation. Currently, the common method for separating and treating VOCs and water vapor in waste gas is condensation.

[0003] However, when ordinary condensing equipment treats waste gas containing VOCs, VOCs are prone to condensation on the heat exchange surface. The heat exchange parts are generally in a fixed state. As the equipment operates, some of these liquid organic substances will adhere to the surface of the heat exchange parts, gradually forming a heat insulation layer, which seriously hinders heat transfer, causing the heat exchange effect to deteriorate sharply and the separation efficiency to decrease. Therefore, how to solve the above problems needs to be considered. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a low-temperature waste gas separation device. In actual use, the heat exchange part of the device is in a rotating state. This method can avoid the situation where a large amount of liquid organic matter adheres to it, which would lead to a decrease in heat exchange efficiency and improve the overall heat exchange performance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A low-temperature waste gas separation device includes a treatment cylinder, an inlet pipe at the top of the inner part of the treatment cylinder, an exhaust pipe on the right side of the bottom space of the treatment cylinder, and a drain pipe at the bottom of the inner part of the treatment cylinder; a heat exchange mechanism, which includes a spiral temperature-conducting tube horizontally arranged inside the treatment cylinder, with rotating tubes fixedly connected to both ends of the spiral temperature-conducting tube, the other ends of the two rotating tubes being rotatably connected to the inner wall of the treatment cylinder, and the other ends of the two rotating tubes penetrating the inner wall of the treatment cylinder and equipped with a rotary joint; and a rotation mechanism for improving the heat exchange effect of the heat exchange mechanism.

[0007] Preferably, a support frame is installed at the lower end of the processing cylinder.

[0008] Preferably, the heat exchange mechanism includes a drive motor installed on the left side of the processing cylinder, the output shaft of the drive motor is fixedly connected to a first gear, and a second gear is installed on the rotating tube located on the left side.

[0009] Preferably, the first gear meshes with the second gear.

[0010] Preferably, a temperature-conducting cylinder is fixedly connected to the outer side of the spiral temperature-conducting tube, a connecting strip is fixedly connected to the inner wall of the processing cylinder, a scraper is fixedly connected to the upper end of the connecting strip, and the upper end of the scraper contacts the outer wall of the temperature-conducting cylinder.

[0011] Preferably, a hollow strip is horizontally arranged inside the processing cylinder, a strip-shaped diversion groove is provided at the bottom of the hollow strip, a connecting pipe is fixedly connected to the upper end of the hollow strip, the upper end of the connecting pipe is fixedly connected to the air inlet pipe, and the two ends of the connecting pipe are respectively connected to the air inlet pipe and the hollow strip.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. The drive motor drives the first and second gears to rotate, causing the rotating tube, spiral heat-conducting tube and heat-conducting cylinder to rotate. The rotation of the heat-conducting cylinder generates centrifugal force, which throws out the liquid substances adhering to its outer wall, effectively reducing the amount of liquid adhering and avoiding the impact of liquid accumulation on heat exchange efficiency, thus ensuring the long-term stable and efficient operation of the equipment.

[0014] 2. The scraper at the upper end of the connecting strip between the inner walls of the treatment cylinder contacts the outer wall of the heat-conducting cylinder. When the heat-conducting cylinder rotates, it scrapes its surface and removes residual liquid substances, further reducing the obstruction to heat exchange and ensuring that the heat exchange part is always in a state of efficient heat exchange. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a low-temperature waste gas separation device proposed in this utility model;

[0016] Figure 2 for Figure 1 A cross-sectional schematic diagram;

[0017] Figure 3 for Figure 2 A bottom view.

[0018] In the diagram: 1. Processing cylinder, 2. Inlet pipe, 3. Drive motor, 4. First gear, 5. Second gear, 6. Rotating pipe, 7. Rotary joint, 8. Drain pipe, 9. Exhaust pipe, 10. Temperature-conducting cylinder, 11. Hollow strip, 12. Spiral temperature-conducting pipe, 13. Connecting strip, 14. Scraper, 15. Strip-shaped diversion groove, 16. Connecting pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figures 1-3 A low-temperature waste gas separation device includes a treatment cylinder 1, a support frame installed at the lower end of the treatment cylinder 1, an air inlet pipe 2 provided at the top inner part of the treatment cylinder 1, an exhaust pipe 9 provided on the right side of the bottom space of the treatment cylinder 1, and a drain pipe 8 provided at the bottom inner part of the treatment cylinder 1. Waste gas enters from the air inlet pipe 2.

[0021] The system also includes a heat exchange mechanism, which includes a spiral heat-conducting tube 12 horizontally arranged inside the processing cylinder 1. Both ends of the spiral heat-conducting tube 12 are fixedly connected to rotating tubes 6. The other ends of the two rotating tubes 6 are rotatably connected to the inner wall of the processing cylinder 1. The other ends of the two rotating tubes 6 penetrate the inner wall of the processing cylinder 1 and are equipped with rotary joints 7. Rotary sealing gaskets are installed at the penetration points to ensure rotational sealing. The system also includes a heat exchange system consisting of a heat exchanger and a pump body as shown in the figure. The liquid inlet end of the heat exchange system is connected to one of the rotary joints 7, and the liquid outlet end of the heat exchange system is connected to the other rotary joint 7, thereby forming a circulating flow of heat exchange liquid.

[0022] It also includes a rotating mechanism, which is used to improve the heat exchange effect of the heat exchange mechanism. The heat exchange mechanism includes a drive motor 3 installed on the left side of the processing cylinder 1. The output shaft of the drive motor 3 is fixedly connected to a first gear 4, and a second gear 5 is installed on the rotating tube 6 located on the left side. The first gear 4 and the second gear 5 mesh.

[0023] A temperature-conducting cylinder 10 is fixedly connected to the outer side of the spiral temperature-conducting tube 12. Both the spiral temperature-conducting tube 12 and the temperature-conducting cylinder 10 are made of temperature-conducting material. A connecting strip 13 is fixedly connected to the inner wall of the processing cylinder 1. A scraper 14 is fixedly connected to the upper end of the connecting strip 13. The upper end of the scraper 14 contacts the outer wall of the temperature-conducting cylinder 10. A hollow strip 11 is horizontally arranged inside the processing cylinder 1. A strip-shaped diversion groove 15 is provided at the bottom of the hollow strip 11. The upper end of the hollow strip 11 is fixedly connected to... There is a connecting pipe 16, the upper end of which is fixedly connected to the air inlet pipe 2. The two ends of the connecting pipe 16 are respectively connected to the air inlet pipe 2 and the hollow strip 11. When the exhaust gas enters from the air inlet pipe 2, it will be diverted and discharged through the strip-shaped diversion groove 15 at the hollow strip 11 and blown towards the rotating temperature-conducting cylinder 10 to cool the gas and allow some of the gas to liquefy and separate. The rotation of the temperature-conducting cylinder 10 can reduce the amount of liquid adhesion by using centrifugal force. In addition, the scraper 14 can be used to scrape off the liquid.

[0024] In this utility model, the exhaust gas enters from the inlet pipe 2 at the top of the treatment cylinder 1, flows into the hollow bar 11 through the connecting pipe 16, and is diverted at the strip-shaped diversion groove 15 at the bottom of the hollow bar 11. The diverted exhaust gas is evenly discharged and blown into the temperature guide cylinder 10. The heat exchange system is started to realize the continuous circulation of the heat exchange liquid. During this process, the spiral temperature guide pipe 12 (temperature guide cylinder 10) exchanges heat with the exhaust gas.

[0025] The drive motor 3 installed on the left side of the treatment cylinder 1 starts, and its output shaft drives the first gear 4 to rotate. Since the first gear 4 meshes with the second gear 5 located on the left rotating tube 6, the second gear 5 rotates accordingly, which in turn drives the rotating tube 6 to rotate. This causes the spiral heat-conducting tube 12, which is horizontally set inside the treatment cylinder 1, and the heat-conducting cylinder 10, which is fixedly connected to the outside of the spiral heat-conducting tube 12, to rotate together. The exhaust gas blown into the heat-conducting cylinder 10 exchanges heat with the rotating heat-conducting cylinder 10, and the temperature decreases. When the volatile organic compounds (VOCs) and other components in the exhaust gas reach below the dew point temperature, a phase change occurs, changing from a gaseous state to a liquid state, thus achieving partial separation of gas and liquid. When the heat-conducting cylinder 10 rotates, it generates centrifugal force, which causes the liquid substances adhering to the outer wall of the heat-conducting cylinder 10 to be thrown out under the action of centrifugal force, reducing the amount of liquid adhering. Meanwhile, the scraper 14 fixed at the upper end of the connecting strip 13 between the inner walls of the treatment cylinder 1 contacts the outer wall of the temperature conducting cylinder 10. During the rotation of the temperature conducting cylinder 10, the scraper 14 scrapes the outer wall of the temperature conducting cylinder 10 to remove the residual liquid substances, ensuring that the heat exchange section is always in a highly efficient heat exchange state.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A low-temperature waste gas separation device, characterized in that, include: The processing cylinder (1) has an air inlet pipe (2) at its inner top, an exhaust pipe (9) at the bottom right side of its bottom space, and a drain pipe (8) at its inner bottom. The heat exchange mechanism includes a spiral heat-conducting tube (12) horizontally arranged inside the processing cylinder (1). Both ends of the spiral heat-conducting tube (12) are fixedly connected to rotating tubes (6). The other ends of the two rotating tubes (6) are rotatably connected to the inner wall of the processing cylinder (1). The other ends of the two rotating tubes (6) penetrate the inner wall of the processing cylinder (1) and are equipped with rotary joints (7). A rotating mechanism is used to improve the heat exchange effect of the heat exchange mechanism.

2. The low-temperature waste gas separation device according to claim 1, characterized in that, A support frame is installed at the lower end of the processing cylinder (1).

3. The low-temperature waste gas separation device according to claim 1, characterized in that, The heat exchange mechanism includes a drive motor (3) installed on the left side of the processing cylinder (1), the output shaft of the drive motor (3) is fixedly connected to a first gear (4), and a second gear (5) is installed on the rotating tube (6) located on the left side.

4. The low-temperature waste gas separation device according to claim 3, characterized in that, The first gear (4) meshes with the second gear (5).

5. The low-temperature waste gas separation device according to claim 1, characterized in that, A temperature-conducting cylinder (10) is fixedly connected to the outside of the spiral temperature-conducting tube (12), and a connecting strip (13) is fixedly connected to the inner wall of the processing cylinder (1). A scraper (14) is fixedly connected to the upper end of the connecting strip (13), and the upper end of the scraper (14) is in contact with the outer wall of the temperature-conducting cylinder (10).

6. The low-temperature waste gas separation device according to claim 1, characterized in that, A hollow strip (11) is horizontally arranged inside the processing cylinder (1). A strip-shaped diversion groove (15) is provided at the bottom of the hollow strip (11). A connecting pipe (16) is fixedly connected to the upper end of the hollow strip (11). The upper end of the connecting pipe (16) is fixedly connected to the air inlet pipe (2). The two ends of the connecting pipe (16) are respectively connected to the air inlet pipe (2) and the hollow strip (11).

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