Tail gas desuperheating water cooling device for preventing compressor from overtemperature jump stop

Abstract

The utility model is applicable to the technical field of chemical production equipment, and particularly relates to a tail gas desuperheating water cooling device for preventing a compressor from overtemperature jump stop, which comprises a support panel, a heat exchanger is arranged on the surface of the support panel, and a liquid inlet connector and a liquid outlet connector are respectively arranged on two sides of the surface of the heat exchanger. And the surface of the supporting panel is connected with a first liquid storage tank and a second liquid storage tank. According to the utility model, different working conditions are coped by adjusting the types of the cooling liquid in real time, so that the normal operation of the compressor is ensured, and shutdown caused by overhigh temperature is avoided. And secondly, the two cooling liquids of the process condensate and the desalted water are alternately used, so that the risk of blockage caused by long-term use of the process condensate is reduced, and the service life of the heat exchanger and related equipment is prolonged. And by recovering the cooling liquid, the energy consumption is reduced, and the advantages of energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production equipment, in particular to an exhaust gas desuperheating water cooling device for preventing a compressor from tripping due to over-temperature. Background Art

[0002] In existing chemical production facilities, such as those for ethylbenzene dehydrogenation to produce styrene, the exhaust gas compressor typically requires a cooling system to cool the high-temperature gas to prevent the compressor from tripping due to overheating. The traditional cooling method uses process condensate as the cooling medium, exchanging heat with the high-temperature exhaust gas through a heat exchanger to remove the heat. However, as the facility operates for extended periods, oil in the process condensate can gradually accumulate in the filter, reducing the condensate's fluidity and gradually diminishing the cooling effect. This phenomenon increases the risk of overheating in the exhaust gas compressor and may even cause the compressor to trip, impacting production stability and safety.

[0003] Current technology generally relies on a single coolant system that circulates process condensate for cooling, but this system also has limitations. Over extended use, the cooling effect of the process condensate often becomes impaired due to accumulated oil or impurities, resulting in poor flow and suboptimal cooling of the heat exchanger. Furthermore, since the process condensate filtration system cannot completely prevent the accumulation of impurities and oil, the coolant supply is unstable. Once clogged, the cooling system may not function effectively, ultimately causing the compressor to overheat and trip, impacting the normal operation of the entire production line. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide an exhaust gas desuperheating water cooling device to prevent the compressor from tripping due to overheating, aiming to solve the technical problems mentioned in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] An exhaust gas desuperheating water cooling device for preventing a compressor from tripping due to overheating comprises a support panel, a heat exchanger being provided on the surface of the support panel, a liquid inlet port and a liquid outlet port being provided on both sides of the heat exchanger surface, and a first liquid storage tank and a second liquid storage tank being connected to the surface of the support panel;

[0007] The interior of the liquid discharge interface is connected to a recovery tee, and a first solenoid valve and a second solenoid valve are installed on both sides of the outer side of the recovery tee respectively;

[0008] A liquid extraction pump is installed on the surface of the support panel, and one end of the liquid extraction pump is connected to a liquid extraction tee, and the other end is connected to the interior of the liquid inlet interface, a third solenoid valve and a fourth solenoid valve are respectively installed on both sides of the outer side of the liquid extraction tee, and two ends of the liquid extraction tee away from the liquid extraction pump are respectively connected to a first liquid extraction hose and a second liquid extraction hose, one end of the first liquid extraction hose is connected to a first liquid extraction head, and one end of the second liquid extraction hose is connected to a second liquid extraction head;

[0009] Lifting components are provided inside the first liquid storage tank and the second liquid storage tank, and the two groups of lifting components are used to drive the second liquid extraction head and the first liquid extraction head to move up and down respectively.

[0010] Furthermore, the two ends of the recovery tee pipe away from the heat exchanger are respectively arranged on the inner top of the first liquid storage tank and the second liquid storage tank, and the first solenoid valve is close to the first liquid storage tank, and the second solenoid valve is close to the second liquid storage tank.

[0011] Furthermore, the two ends of the liquid extraction three-way pipe away from the liquid extraction pump are respectively placed inside the first liquid storage tank and the second liquid storage tank, and the third solenoid valve and the fourth solenoid valve are respectively located inside the second liquid storage tank and the first liquid storage tank.

[0012] Furthermore, the lifting assembly includes:

[0013] A bearing seat and a drive motor are installed on the inner top of each of the first liquid storage tank and the second liquid storage tank, and a winding roller is installed on the surface of the bearing seat and the output end of the drive motor;

[0014] The surface of the winding roller is connected with a connecting rope;

[0015] The surfaces of the second liquid extraction head and the first liquid extraction head are both connected with a connecting block, and one end of the connecting rope away from the winding roller is connected to the connecting block.

[0016] Furthermore, limit rings are provided on both sides of the surface of the winding roller.

[0017] Furthermore, the inner tops of the first liquid storage tank and the second liquid storage tank are both provided with protective covers, and the drive motor is installed inside the protective covers.

[0018] The utility model provides an exhaust gas desuperheating water cooling device for preventing the compressor from tripping due to overheating, which has the following beneficial effects:

[0019] First, the system can adjust the type of coolant in real time to accommodate varying operating conditions, ensuring normal compressor operation and preventing downtime due to excessive temperatures. Second, by alternating between process condensate and desalted water, the system reduces the risk of clogging caused by long-term use of process condensate, thereby extending the service life of the heat exchanger and related equipment. Coolant recycling reduces energy consumption, offering energy-saving and environmentally friendly advantages.

[0020] In terms of application prospects, this system is suitable for cooling exhaust compressors in chemical plants such as ethylbenzene dehydrogenation to styrene, and can also be extended to other industrial equipment requiring efficient and controllable cooling. Its automatic coolant switching design offers wide adaptability and can be optimized to suit different production environments and requirements, improving equipment reliability and production efficiency.

[0021] This technology solves the problem of compressor overheating and shutdown caused by insufficient or poor cooling liquid. Especially after long-term operation, the process condensate is easily affected by oil accumulation. When the cooling effect decreases, it can switch to the desalted water system in time to ensure that the cooling process is not affected, thereby improving the safety and stability of the entire production unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The diagram is a structural diagram of an exhaust gas desuperheating water cooling device that prevents the compressor from tripping due to overtemperature.

[0023] Figure 2 It is an exhaust gas desuperheating water cooling device that prevents the compressor from tripping due to overheating. Figure 1 Enlarged view of point A.

[0024] In the figure: 1. Support panel; 2. Heat exchanger; 3. Recovery tee; 4. Drain interface; 5. First liquid storage tank; 6. First solenoid valve; 7. Second solenoid valve; 8. Second liquid storage tank; 9. Third solenoid valve; 10. First liquid extraction hose; 11. Fourth solenoid valve; 12. Second liquid extraction hose; 13. Liquid inlet interface; 14. Liquid extraction pump; 15. Liquid extraction tee; 16. Second liquid extraction head; 17. First liquid extraction head; 18. Drive motor; 19. Bearing seat; 20. Winding roller; 21. Connecting rope. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0027] like Figure 1 As shown, an embodiment of the present invention provides an exhaust gas desuperheating water cooling device for preventing compressor overheating and shutdown, comprising a support panel 1, on the surface of which a heat exchanger 2 is provided. A liquid inlet port 13 and a liquid outlet port 4 are provided on either side of the surface of the heat exchanger 2. The surface of the support panel 1 is connected to a first liquid storage tank 5 and a second liquid storage tank 8. The first liquid storage tank 5 and the second liquid storage tank 8 respectively store sufficient amounts of desalted water and process condensate.

[0028] The drain port 4 is internally connected to a recovery tee 3, with a first solenoid valve 6 and a second solenoid valve 7 mounted on either side of the outer side of the recovery tee. The ends of the recovery tee 3, away from the heat exchanger 2, are located at the inner tops of the first and second liquid storage tanks 5 and 8, respectively. The first solenoid valve 6 is located near the first liquid storage tank 5, and the second solenoid valve 7 is located near the second liquid storage tank 8.

[0029] A liquid extraction pump 14 is mounted on the surface of the support panel 1. One end of the liquid extraction pump 14 is connected to a liquid extraction tee 15, and the other end is connected to the interior of the liquid inlet interface 13. A third solenoid valve 9 and a fourth solenoid valve 11 are mounted on either side of the outer side of the liquid extraction tee 15. The ends of the liquid extraction tee 15 away from the liquid extraction pump 14 are connected to a first liquid extraction hose 10 and a second liquid extraction hose 12, respectively. One end of the first liquid extraction hose 10 is connected to a first liquid extraction head 17, and one end of the second liquid extraction hose 12 is connected to a second liquid extraction head 16. The ends of the liquid extraction tee 15 away from the liquid extraction pump 14 are placed inside the first liquid storage tank 5 and the second liquid storage tank 8, respectively. The third solenoid valve 9 and the fourth solenoid valve 11 are located inside the second liquid storage tank 8 and the first liquid storage tank 5, respectively.

[0030] In one embodiment of the present invention, heat exchanger 2 is used to cool the high-temperature gases from the exhaust gas compressor through a heat exchange process, preventing overheating and compressor shutdown. The exhaust gas compressor generates high-temperature gases during the dehydrogenation of ethylbenzene to produce styrene. After entering heat exchanger 2, these high-temperature gases exchange heat with a coolant (process condensate or desalted water) across the heat exchanger's surface, ultimately transferring heat from the high-temperature gases to the coolant, lowering the gas temperature.

[0031] The cooling process is as follows: High-temperature gas passes through heat exchanger 2, transferring heat to the coolant. The coolant is divided into process condensate and desalted water, which are stored in a first tank 5 and a second tank 8, respectively. When the process condensate is effective in cooling the gas, it is extracted from the second tank 8 via a pump 14 and a first pump head 17 and fed into the heat exchanger 2 for cooling. At this point, the drain port 4 returns the heated process condensate to the second tank 8 via a recovery tee 3.

[0032] When the cooling effect of the process condensate is poor, the system automatically switches to desalted water for cooling. At this point, the second and third solenoid valves 7 and 9 are closed, while the first and fourth solenoid valves 6 and 11 are opened. Desalted water is pumped from the first liquid storage tank 5 through the first pumping head 17 to the heat exchanger 2 for cooling by the pumping pump 14. At this point, the coolant in the heat exchanger 2 is replaced by desalted water, and the heated desalted water is recovered via the recovery tee 3 and returned to the first liquid storage tank 5.

[0033] This design can automatically switch between process condensate and desalted water according to cooling needs, ensuring that the system always maintains the best cooling effect and preventing the compressor from overheating and stopping due to insufficient coolant or poor cooling effect.

[0034] This technical solution offers several beneficial effects. First, it can adjust the type of coolant in real time to accommodate varying operating conditions, ensuring the normal operation of the compressor and avoiding downtime due to excessive temperatures. Second, by alternating between process condensate and desalted water, the risk of clogging caused by long-term use of the process condensate is reduced, thereby extending the service life of the heat exchanger and related equipment. Coolant recycling reduces energy consumption, offering energy-saving and environmentally friendly advantages.

[0035] In terms of application prospects, this system is suitable for cooling exhaust compressors in chemical plants such as ethylbenzene dehydrogenation to styrene, and can also be extended to other industrial equipment requiring efficient and controllable cooling. Its automatic coolant switching design offers wide adaptability and can be optimized to suit different production environments and requirements, improving equipment reliability and production efficiency.

[0036] This technology solves the problem of compressor overheating and shutdown caused by insufficient or poor cooling liquid. Especially after long-term operation, the process condensate is easily affected by oil accumulation. When the cooling effect decreases, it can switch to the desalted water system in time to ensure that the cooling process is not affected, thereby improving the safety and stability of the entire production unit.

[0037] like Figure 1 and Figure 2 As shown, in one embodiment of the present invention, lifting assemblies are provided inside the first liquid storage tank 5 and the second liquid storage tank 8, and the two sets of lifting assemblies are used to drive the second liquid extraction head 16 and the first liquid extraction head 17 to move up and down respectively.

[0038] The lifting components include:

[0039] The inner tops of the first liquid storage tank 5 and the second liquid storage tank 8 are both installed with a bearing seat 19 and a drive motor 18, and a winding roller 20 is installed on the surface of the bearing seat 19 and the output end of the drive motor 18;

[0040] The surface of the winding roller 20 is connected with a connecting rope 21;

[0041] The surfaces of the second liquid extraction head 16 and the first liquid extraction head 17 are both connected to a connection block, and the end of the connection rope 21 away from the winding roller 20 is connected to the connection block.

[0042] In one embodiment of the present invention, when switching to desalted water for cooling is required, the lifting assembly ensures a smooth and efficient coolant switching process. The specific process is as follows: First, the drive motor 18 is activated, driving the reel 20 to rotate via the bearing seat 19, thereby reeling in the connecting rope 21 and raising the second liquid extraction head 16. This lifts the second liquid extraction head 16 from the liquid level in the second liquid storage tank 8, avoiding direct liquid extraction.

[0043] Next, the liquid extraction pump 14 begins operating, first extracting air from the second liquid storage tank 8 until sufficient negative pressure is generated. At this point, the process condensate is extracted through the recovery tee 3 and returned to the second liquid storage tank 8, continuing until all the process condensate in the heat exchanger 2 is recovered and returned to the second liquid storage tank 8. This process ensures that the process condensate in the heat exchanger is completely recovered, preventing any condensate from remaining in the system.

[0044] Once the process condensate is fully recovered, the system automatically switches to the coolant. The solenoid valve control system opens the first solenoid valve 6 and the fourth solenoid valve 11, and closes the third solenoid valve 9 and the second solenoid valve 7. At this point, desalinated water flows from the first liquid storage tank 5 through the first liquid extraction head 17 into the heat exchanger 2, where it begins cooling.

[0045] With this design, when switching to desalted water is required, the second pumping head 16 is raised, preventing mixing of process condensate and desalted water, ensuring clean and accurate system switching. The negative pressure of the pump ensures complete recovery of process condensate, further ensuring clean operation of the heat exchanger 2.

[0046] The benefits of this design include: First, it efficiently recovers process condensate, preventing it from remaining in the system, thereby ensuring cooling efficiency and system stability. Second, a lifting component ensures the separation of process condensate from desalted water, preventing mixing of the two coolants, ensuring coolant purity, and improving cooling reliability. Furthermore, precise coolant switching avoids unnecessary waste, reduces equipment maintenance costs, and reduces equipment wear and tear due to coolant mixing, thereby extending equipment life.

[0047] This technical solution is not only applicable to tail gas compressors in chemical production units such as ethylbenzene dehydrogenation to styrene, but can also be widely applied to other industrial equipment requiring efficient cooling and precise coolant switching, such as compressors and reactors, and has great application prospects. This technology can significantly improve the safety and stability of production units, reduce over-temperature trips caused by insufficient cooling, thereby improving production efficiency and ensuring long-term stable operation of equipment.

[0048] This technical solution solves the problems of contamination, mixing and incomplete recovery during the coolant switching process, ensures accurate switching and recovery of the coolant, and effectively prevents problems such as equipment over-temperature shutdown due to insufficient cooling, thereby improving the safety, reliability and economy of the production equipment.

[0049] In this embodiment, limit rings are provided on both sides of the surface of the winding roller 20 .

[0050] In this embodiment, a protective cover is provided on the inner top of each of the first liquid storage tank 5 and the second liquid storage tank 8, and the driving motor 18 is installed inside the protective cover.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An exhaust gas desuperheating water cooling device for preventing a compressor from tripping due to overheating, comprising a support panel (1), wherein a heat exchanger (2) is provided on the surface of the support panel (1), and a liquid inlet interface (13) and a liquid discharge interface (4) are provided on both sides of the surface of the heat exchanger (2), characterized in that: The surface of the support panel (1) is connected to a first liquid storage tank (5) and a second liquid storage tank (8); The interior of the liquid discharge interface (4) is connected to a recovery tee pipe (3), and a first solenoid valve (6) and a second solenoid valve (7) are respectively installed on both sides of the outer side of the recovery tee pipe (3); A liquid extraction pump (14) is installed on the surface of the support panel (1), and one end of the liquid extraction pump (14) is connected to a liquid extraction three-way pipe (15), and the other end is connected to the inside of the liquid inlet interface (13); a third solenoid valve (9) and a fourth solenoid valve (11) are respectively installed on both sides of the outer side of the liquid extraction three-way pipe (15), and two ends of the liquid extraction three-way pipe (15) away from the liquid extraction pump (14) are respectively connected to a first liquid extraction hose (10) and a second liquid extraction hose (12); one end of the first liquid extraction hose (10) is connected to a first liquid extraction head (17), and one end of the second liquid extraction hose (12) is connected to a second liquid extraction head (16); Lifting assemblies are provided inside the first liquid storage tank (5) and the second liquid storage tank (8), and the two sets of lifting assemblies are used to drive the second liquid extraction head (16) and the first liquid extraction head (17) to move up and down respectively.

2. The exhaust gas desuperheating water cooling device for preventing the compressor from tripping due to overtemperature according to claim 1 is characterized in that: The two ends of the recovery three-way pipe (3) away from the heat exchanger (2) are respectively arranged at the inner top of the first liquid storage tank (5) and the second liquid storage tank (8), and the first solenoid valve (6) is close to the first liquid storage tank (5), and the second solenoid valve (7) is close to the second liquid storage tank (8).

3. The exhaust gas desuperheating water cooling device for preventing the compressor from tripping due to overtemperature according to claim 1 is characterized in that: The two ends of the liquid extraction three-way pipe (15) away from the liquid extraction pump (14) are respectively placed inside the first liquid storage tank (5) and the second liquid storage tank (8), and the third solenoid valve (9) and the fourth solenoid valve (11) are respectively located inside the second liquid storage tank (8) and the first liquid storage tank (5).

4. The exhaust gas desuperheating water cooling device for preventing the compressor from tripping due to overtemperature according to claim 1 is characterized in that: The lifting assembly comprises: A bearing seat (19) and a driving motor (18) are installed on the inner top of each of the first liquid storage tank (5) and the second liquid storage tank (8), and a winding roller (20) is installed on the surface of the bearing seat (19) and the output end of the driving motor (18); The surface of the winding roller (20) is connected with a connecting rope (21); The surfaces of the second liquid extraction head (16) and the first liquid extraction head (17) are both connected with a connecting block, and the end of the connecting rope (21) away from the winding roller (20) is connected to the connecting block.

5. The exhaust gas desuperheating water cooling device for preventing the compressor from tripping due to overtemperature according to claim 4 is characterized in that: Limiting retaining rings are provided on both sides of the surface of the winding roller (20).

6. The exhaust gas desuperheating water cooling device for preventing the compressor from tripping due to overtemperature according to claim 4, characterized in that: The inner tops of the first liquid storage tank (5) and the second liquid storage tank (8) are both provided with protective covers, and the drive motor (18) is installed inside the protective covers.

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