Vacuum skid unit for removal of toxic components and condensate

Abstract

The utility model relates to water ring vacuum pump technical field, concretely relates to remove toxic component and vacuum pry installation equipment of condensate oil, including water ring vacuum pump and gas -liquid separation tank, the baffle in gas -liquid separation tank divides the inner chamber in gas -liquid separation tank into liquid collecting chamber and oil collecting chamber, is equipped with the through -port in the upper portion of baffle, is equipped with the through -valve on through -port, the top of liquid collecting chamber is equipped with gas -liquid import and exhaust pipe, the bottom of liquid collecting chamber is equipped with circulating outlet water pipe and sewage pipe, circulating outlet water pipe connects the water inlet of heat exchanger, the water outlet of heat exchanger is connected the water inlet of water ring vacuum pump through backwater pipe, the upper portion of liquid collecting chamber is equipped with water meter no.

Description

Technical Field

[0001] This utility model relates to the field of water ring vacuum pump technology, specifically to a vacuum skid-mounted device for removing toxic components and condensate oil. Background Technology

[0002] Currently, all commercially available vacuum skid-mounted equipment mainly consists of a water ring vacuum pump, a vacuum pump makeup water tank, and a heat exchanger. The water ring vacuum pump extracts gas, which is then discharged from the vacuum pump makeup water tank. Due to the low outlet pressure of the vacuum pump, the extracted gas cannot be recovered or treated. If the gas contains toxic or corrosive media such as hydrogen sulfide or hydrogen chloride, direct discharge to the flare will impact the environment. Furthermore, corrosive media can easily corrode the flare pipe network, leading to leaks and posing production risks. In the oil refining industry, the gas extracted by the vacuum pump contains some C5 and C6 compounds, which condense into oil under positive pressure, increasing the difficulty of wastewater treatment and increasing energy consumption. Utility Model Content

[0003] The technical problem to be solved by this utility model is to propose a vacuum skid-mounted device for removing toxic components and condensate oil, which effectively reduces the entry of toxic and corrosive gases into the flare, reduces flare pipeline corrosion, reduces production risks, and avoids environmental pollution; it also separates oil and water in the gas-liquid separation tank for recycling or treatment, thereby reducing the difficulty and cost of wastewater treatment.

[0004] The vacuum skid-mounted equipment for removing toxic components and condensate oil according to this utility model includes a water ring vacuum pump and a gas-liquid separation tank. A vertical partition is installed inside the gas-liquid separation tank, dividing the tank's interior into a liquid collection chamber and an oil collection chamber. A passage opening is provided at the top of the partition, connecting the liquid collection chamber and the oil collection chamber. A passage valve is installed at the passage opening. A level gauge 1 and a level gauge 2 are connected in parallel to the side walls of the liquid collection chamber and the oil collection chamber, respectively. A gas-liquid inlet and an exhaust pipe are located at the top of the liquid collection chamber. A circulating water outlet pipe and a wastewater pipe are located at the bottom of the liquid collection chamber. The circulating water outlet pipe is connected to the inlet of a heat exchanger, and the outlet of the heat exchanger is connected to the inlet of the water ring vacuum pump via a return water pipe. The circulating water outlet pipe is connected to a water supply pipe via a makeup water pipe. A water meter 1 is installed at the top of the liquid collection chamber, with its probe extending to the lowest point of the passage opening. A vent pipe and a waste oil discharge pipe are located at the bottom of the oil collection chamber. A water meter 2 is installed on the waste oil discharge pipe, which is connected to a light oil recovery pipe and a waste oil recovery pipe.

[0005] The exhaust port of the water ring vacuum pump is connected to the gas-liquid inlet at the top of the liquid collection chamber through an exhaust pipe. An absorption tank is installed on the exhaust pipe, and the absorption tank is filled with adsorbent.

[0006] Preferably, the exhaust pipe is connected to the flare line.

[0007] Preferably, the air inlet of the water ring vacuum pump is connected to an air inlet pipe, and a filter screen is provided on the air inlet pipe.

[0008] Preferably, the return water pipe is equipped with a temperature sensor and a pressure sensor.

[0009] Preferably, the heat exchanger is equipped with a cooling water inlet pipe and a cooling water outlet pipe, and a thermometer is installed on the cooling water inlet pipe.

[0010] Preferably, the liquid collection chamber is connected to the water supply pipe through the second water supply pipe, and the outlet of the second water supply pipe is located at the bottom of the liquid collection chamber.

[0011] Valves can be installed on the pipeline as needed to control the flow of materials within the pipeline. The opening and closing of the valves can be used to conveniently control the flow of materials within the pipeline and to regulate the material flow rate.

[0012] In use, the gas extracted by the water ring vacuum pump first passes through an absorption tank before entering the gas-liquid separator. The absorption tank is filled with a corresponding adsorbent for harmful gases (e.g., zinc oxide adsorbent for hydrogen sulfide gas), and the harmful gases are absorbed. The gas then enters the collection chamber of the gas-liquid separator. After gas-liquid separation, the gas is discharged from the exhaust pipe, and the liquid remains in the collection chamber. When condensate oil is present in the liquid, the oil and water separate under gravity, and the liquid separates into layers. The condensate oil floats on the water surface. When the liquid level rises to the through port, the through valve is opened to allow the upper light oil to enter the oil collection chamber through the through port. The change in liquid viscosity and density is detected by a water meter to determine when the oil-water separation point has reached the through port. Then the through valve is closed. This allows the oil layer in the collection chamber to be discharged into the oil collection chamber for treatment or recycling. The water remaining in the collection chamber can be recycled through a sewage pipe or returned to the water ring vacuum pump through a circulating water outlet pipe for continued use.

[0013] When draining the oil from the oil collection chamber, first open the vent pipe at the bottom of the chamber. If the liquid coming out is mainly water, it can be recovered through the sludge discharge pipe and the sludge recovery pipe. During the drainage process, the viscosity and density of the liquid are measured by a water meter. When the water meter detects that the liquid has reached the oil-water mixture, it is mainly oil. At this point, the valve of the sludge recovery pipe is shut off, and the liquid in the sludge discharge pipe is switched to the light oil recovery pipe for oil recovery. In this way, what is obtained in the sludge recovery pipe is water mixed with a small amount of oil, greatly reducing the amount of oil-water mixture to be recovered. If the liquid coming out of the vent pipe is mainly oil, it can be directly recovered through the light oil recovery pipe, thus recovering the oil and reducing some losses.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. Effectively reduces the entry of toxic and corrosive gases into the flare, reduces flare pipeline corrosion, lowers production risks, and avoids environmental pollution;

[0016] 2. The oil and water in the gas-liquid separator are separated and then recycled or treated separately, which reduces the difficulty and cost of wastewater treatment and saves production costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the vacuum skid-mounted equipment for removing toxic components and condensate oil according to this utility model;

[0018] In the diagram: 1. Water ring vacuum pump; 2. Gas-liquid separator; 3. Baffle plate; 4. Through valve; 5. Liquid collection chamber; 6. Oil collection chamber; 7. Level gauge 1; 8. Level gauge 2; 9. Exhaust pipe; 10. Circulating water outlet pipe; 11. Sewage pipe; 12. Heat exchanger; 13. Return water pipe; 14. Makeup water pipe 1; 15. Water supply pipe; 16. Water meter 1; 17. Vent pipe; 18. Sludge and oil discharge pipe; 19. Water meter 2; 20. Light oil recovery pipe; 21. Sludge and oil recovery pipe; 22. Air outlet pipe; 23. Absorption tank; 24. Air inlet pipe; 25. Filter screen; 26. Temperature sensor; 27. Pressure sensor; 28. Cooling water inlet pipe; 29. ​​Cooling water outlet pipe; 30. Makeup water pipe 2. Detailed Implementation

[0019] The present invention will now be described clearly and completely with reference to the accompanying drawings.

[0020] like Figure 1 As shown, the vacuum skid-mounted equipment for removing toxic components and condensate oil according to this utility model includes a water ring vacuum pump 1 and a gas-liquid separator 2. A vertical partition 3 is installed inside the gas-liquid separator 2, dividing the inner cavity of the gas-liquid separator 2 into a liquid collection chamber 5 and an oil collection chamber 6. A passage opening is provided at the top of the partition 3, through which the liquid collection chamber 5 and the oil collection chamber 6 are connected. A through valve 4 is provided on the passage opening. A level gauge 7 and a level gauge 8 are connected in parallel to the side walls of the liquid collection chamber 5 and the oil collection chamber 6, respectively. A gas-liquid inlet and an exhaust pipe 9 are provided at the top of the liquid collection chamber 5, and a circulation valve is provided at the bottom of the liquid collection chamber 5. The outlet pipe 10 and the sewage pipe 11 are connected. The circulating outlet pipe 10 is connected to the inlet of the heat exchanger 12. The outlet of the heat exchanger 12 is connected to the inlet of the water ring vacuum pump 1 through the return pipe 13. The circulating outlet pipe 10 is connected to the water supply pipe 15 through the water replenishment pipe 14. A water meter 16 is provided on the upper part of the liquid collection chamber 5. The probe of the water meter 16 extends to the lowest point of the passage. The bottom of the oil collection chamber 6 is provided with a vent pipe 17 and a waste oil discharge pipe 18. A water meter 19 is provided on the waste oil discharge pipe 18. The waste oil discharge pipe 18 is connected to the light oil recovery pipe 20 and the waste oil recovery pipe 21.

[0021] The exhaust port of the water ring vacuum pump 1 is connected to the gas-liquid inlet at the top of the liquid collection chamber 5 through the gas outlet pipe 22. The gas outlet pipe 22 is equipped with an absorption tank 23, which is filled with adsorbent.

[0022] Exhaust pipe 9 is connected to the flare line.

[0023] The air inlet of the water ring vacuum pump 1 is connected to the air inlet pipe 24, and the air inlet pipe 24 is equipped with a filter screen 25.

[0024] Temperature sensor 26 and pressure sensor 27 are installed on the return water pipe 13.

[0025] The heat exchanger 12 is equipped with a cooling water inlet pipe 28 and a cooling water outlet pipe 29, and a thermometer is installed on the cooling water inlet pipe 28.

[0026] The liquid collection chamber 5 is connected to the water supply pipe 15 through the water supply pipe 2 30, and the outlet of the water supply pipe 2 30 is located at the bottom of the liquid collection chamber 5.

[0027] The working process is as follows: The water ring vacuum pump 1 draws gas, and the gas (containing hydrogen sulfide) enters the water ring vacuum pump 1 after being filtered through the filter screen 25 via the inlet pipe 24. Then, it enters the outlet pipe 22 from the exhaust port of the water ring vacuum pump 1. After being adsorbed by the adsorbent (zinc oxide adsorbent) in the absorption tank 23, the harmful gas is absorbed and enters the liquid collection chamber 5 of the gas-liquid separator 2 for gas-liquid separation. The gas is discharged from the exhaust pipe 9, and the liquid remains in the liquid collection chamber 5. When there is condensate oil in the liquid, the oil and water separate under the action of gravity, and the condensate oil floats on the water surface. As the liquid accumulates, the level gauge 7 determines that the liquid level has risen to the through port and opens the through valve 4. The upper light oil flows into the oil collection chamber 6 through the through port. At this time, the water supply pipe 30 can be opened to send water to the bottom of the liquid collection chamber 5 to promote the discharge of the upper oil layer. When the water meter 16 detects the change in the viscosity and density of the liquid, it determines that the oil-water separation interface has reached the through port and closes the through valve 4.

[0028] Most of the water remains in the collection chamber 5. The water is discharged through the bottom circulation outlet pipe 10 and enters the heat exchanger 12. After being cooled in the heat exchanger 12, it enters the return water pipe 13 and returns to the water ring vacuum pump 1 for recycling. Excess water in the collection chamber 5 can also be discharged through the sewage pipe 11 for treatment. Here, the circulation outlet pipe 10 and the sewage pipe 11 are located at the bottom of the collection chamber 5 to prevent residual oil from entering.

[0029] When draining the oil from the oil collection chamber 6, first open the vent pipe 17. If the liquid coming out is mainly water, close the valve on the light oil recovery pipe 20 and recover the liquid from the oil collection chamber 6 through the sludge discharge pipe 18 and the sludge recovery pipe 21. During the drainage process, the viscosity and density changes of the liquid are detected by the water meter 19. When the water meter 19 detects that the liquid discharged from the oil-water mixture point is mainly oil, the valve of the sludge recovery pipe 21 is shut off, and the oil is recovered through the sludge discharge pipe 18 and the light oil recovery pipe 20. If the liquid coming out of the vent pipe 17 is mainly oil, it can be directly recovered through the light oil recovery pipe 20.

Claims

1. A vacuum skid-mounted device for removing toxic components and condensate oil, comprising a water ring vacuum pump (1) and a gas-liquid separator (2), characterized in that, A vertical partition (3) is provided inside the gas-liquid separator (2). The partition (3) divides the inner cavity of the gas-liquid separator (2) into a liquid collection chamber (5) and an oil collection chamber (6). A passage is provided at the top of the partition (3). The liquid collection chamber (5) and the oil collection chamber (6) are connected through the passage. A passage valve (4) is provided on the passage. A level gauge 1 (7) and a level gauge 2 (8) are connected in parallel on the side walls of the liquid collection chamber (5) and the oil collection chamber (6), respectively. A gas-liquid inlet and an exhaust pipe (9) are provided at the top of the liquid collection chamber (5). A circulating water outlet pipe (10) and a sewage pipe (11) are provided at the bottom of the liquid collection chamber (5). The circulating water outlet pipe (10) is connected to... The inlet of the heat exchanger (12) and the outlet of the heat exchanger (12) are connected to the inlet of the water ring vacuum pump (1) through the return water pipe (13). The circulating water outlet pipe (10) is connected to the water supply pipe (15) through the water replenishment pipe (14). A water meter (16) is provided on the upper part of the liquid collection chamber (5). The probe of the water meter (16) extends to the lowest point of the outlet. A vent pipe (17) and a waste oil discharge pipe (18) are provided at the bottom of the oil collection chamber (6). A water meter (19) is provided on the waste oil discharge pipe (18). The waste oil discharge pipe (18) is connected to the light oil recovery pipe (20) and the waste oil recovery pipe (21). The exhaust port of the water ring vacuum pump (1) is connected to the gas-liquid inlet at the top of the liquid collection chamber (5) through the gas outlet pipe (22). An absorption tank (23) is provided on the gas outlet pipe (22), and the absorption tank (23) is filled with adsorbent.

2. The vacuum skid-mounted equipment for removing toxic components and condensate oil according to claim 1, characterized in that, The exhaust pipe (9) is connected to the flare line.

3. The vacuum skid-mounted equipment for removing toxic components and condensate oil according to claim 1, characterized in that, The air inlet of the water ring vacuum pump (1) is connected to the air inlet pipe (24), and the air inlet pipe (24) is equipped with a filter screen (25).

4. The vacuum skid-mounted equipment for removing toxic components and condensate oil according to claim 1, characterized in that, A temperature sensor (26) and a pressure sensor (27) are installed on the return water pipe (13).

5. The vacuum skid-mounted equipment for removing toxic components and condensate oil according to claim 1, characterized in that, The heat exchanger (12) is equipped with a cooling water inlet pipe (28) and a cooling water outlet pipe (29), and a thermometer is installed on the cooling water inlet pipe (28).

6. The vacuum skid-mounted equipment for removing toxic components and condensate oil according to claim 1, characterized in that, The liquid collection chamber (5) is connected to the water supply pipe (15) through the water supply pipe 2 (30), and the outlet of the water supply pipe 2 (30) is located at the bottom of the liquid collection chamber (5).

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