An environmentally friendly oil and gas recovery device

Abstract

This invention discloses an environmentally friendly oil and gas recovery device, including an exhaust pipe with an exhaust port above it. A breather valve is covered above the exhaust port, and the breather valve has a valve opening for oil and gas to be discharged. A condensation recovery device is also covered outside the breather valve. The condensation recovery device includes a dust cover, an oil collection section, and a return oil pipe. The dust cover covers the oil collection section, which is located around the breather valve. An exhaust port is located at the top of the oil collection section, and the return oil pipe connects the bottom of the oil collection section to the exhaust pipe. Oil and gas sequentially enter the oil collection section through the exhaust port for cooling and liquefaction. The liquefied oil enters the exhaust pipe through the return oil pipe, while ordinary air is discharged to the outside through the exhaust port. Its advantage is that the device significantly reduces oil and gas emissions, protecting the external environment.

Description

Technical Field

[0001] This invention relates to the chemical industry, and more particularly to an oil and gas environmental protection recovery device. Background Technology

[0002] Compressors, pumps, fans, and other rotating equipment are indispensable in modern petrochemical plants, providing the necessary power source for the media transported during production.

[0003] Taking a traditional reciprocating compressor as an example, the lubricating oil in the compressor crankcase generates oil vapor due to the increased temperature caused by crankshaft friction during operation. This oil vapor is then released into the atmosphere through a breather valve on the top of the crankcase, causing environmental pollution. Condensed oil droplets from the oil vapor flow down the pipe walls to the top cover of the crankcase and the surrounding ground, increasing the workload of oil stain removal and wasting lubricating oil. Furthermore, the uncontrolled venting of oil vapor poses a fire hazard. Current technology uses a breather valve at the exhaust port to reduce oil vapor emissions. This breather valve, a cap-like structure, covers the exhaust port, and the oil vapor is then discharged through an exhaust hole. However, this current technology is ineffective in reducing oil vapor emissions; the discharged gas still contains a large amount of oil vapor, polluting the surrounding environment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an environmentally friendly oil and gas recovery device that can significantly reduce oil and gas emissions.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: an oil and gas environmental protection recovery device, including an exhaust pipe, an exhaust port provided above the exhaust pipe, a breather valve covered above the exhaust port, a valve port provided on the breather valve for oil and gas to be discharged, and a condensation recovery device covered outside the breather valve. The condensation recovery device includes a dust cover, an oil collection part and an oil return pipe. The dust cover covers the oil collection part, the oil collection part is located around the breather valve, and an exhaust hole is provided at the top of the oil collection part. The oil return pipe connects the bottom of the oil collection part and the exhaust pipe. Oil and gas enter the oil collection part through the exhaust port in sequence for cooling and liquefaction. The liquefied oil enters the exhaust pipe through the oil return pipe, and ordinary air is discharged to the outside through the exhaust hole.

[0006] A further preferred embodiment of the present invention is that the valve port faces downward, and the oil collecting part includes a bottom plate and a side wall, wherein the bottom plate, the side wall and the breather valve form an oil collecting chamber.

[0007] A further preferred embodiment of the present invention is as follows: the base plate is a circular flat plate, the side wall is a hollow column, and the breather valve is installed in the center of the circular flat plate.

[0008] A further preferred embodiment of the present invention is that the bottom of the breathing valve is a valve base plate, and a sealing gasket is provided between the valve base plate and the base plate.

[0009] A further preferred embodiment of the present invention is as follows: the dust cover includes an upper cover surface and a side flange, an exhaust gap is provided between the side flange and the oil collection cavity, and an exhaust hole is provided on one side of the exhaust gap.

[0010] A further preferred embodiment of the present invention is: a dust cover covers the oil collection section, and the dust cover is connected to the breather valve by a tightening bolt.

[0011] A further preferred embodiment of the present invention is as follows: the upper end of the tightening bolt is connected to the center of the upper cover surface of the dust cover, and the lower end of the tightening bolt is connected to the center of the upper end surface of the breather valve.

[0012] A further preferred embodiment of the present invention is that a filter screen is provided at the connection between the oil collection section and the oil return pipe.

[0013] A further preferred embodiment of the present invention is as follows: the condensation recovery device is connected to a cooling device, the cooling device being a water tank covering the bottom and outside of the oil collection section, and heat dissipation fins are distributed on the outer surface of the water tank.

[0014] A further preferred embodiment of the present invention is as follows: the water storage tank includes a horizontal water tank in the shape of a thin sheet and a vertical water tank in the shape of a thin sheet, with the water inlet located in the horizontal water tank and the water outlet located in the vertical water tank.

[0015] This invention adds a condensation recovery device to the traditional exhaust device. The condensation recovery device includes a dust cover, an oil collection section, and an oil return pipe. Oil and gas enter the oil collection section through the exhaust port in sequence for cooling and liquefaction. The liquefied oil enters the exhaust pipe through the oil return pipe, and ordinary air is discharged to the outside through the exhaust port, thereby reducing the amount of oil and gas discharged into the air and protecting the environment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a perspective view of the present invention with the dust cover removed;

[0019] Figure 4 This is a perspective view of the present invention;

[0020] Figure 5 A structural diagram of the existing technology. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-5As shown, an oil and gas environmental protection recovery device includes an exhaust pipe 1, which is installed on equipment such as a compressor and an oil storage tank. An exhaust port 2 is provided above the exhaust pipe 1, and a breather valve 3 is provided above the exhaust port 2. The breather valve 3 is provided with a valve port 4 for oil and gas to be discharged. The breather valve 3 is used to discharge oil and gas and prevent outside air from flowing back into the exhaust pipe 1. The outside of the breather valve 3 is also covered by a condensation recovery device, which includes a dust cover 5, an oil collection part 6, and an oil return pipe 7. The dust cover 5 covers the oil collection part 6, which is welded to the exhaust pipe 1 and is located around the breather valve 3. An exhaust hole 8 is provided at the top of the oil collection part 6, and the oil return pipe 7 connects the bottom of the oil collection part 6 and the exhaust pipe 1. Oil and gas enter the oil collection part 6 through the exhaust port 2 in sequence. The oil and gas have a high liquefaction point, so the oil and gas change from a gaseous state to a liquid state. The liquefied oil enters the exhaust pipe 1 through the oil return pipe 7, and ordinary air is discharged to the outside through the exhaust hole 8, which greatly reduces the amount of oil and gas discharged to the outside.

[0023] like Figures 1-4As shown, the valve port 4 of this invention faces downwards. The breather valve 3 itself has a partial condensation effect. The upper wall temperature of the breather valve 3 is lower, and the high-temperature oil and gas will partially liquefy under its influence. The oil and gas that cannot be liquefied will be discharged through the downward-facing valve port 4. If the valve port 4 faces upwards, the oil and gas will be discharged directly, resulting in a poorer condensation effect. The oil collecting part 6 includes a bottom plate 9 and a side wall 10. The bottom plate 9, the side wall 10, and the breather valve 3 form an oil collecting chamber 11. The oil and gas are discharged into a dedicated chamber for cooling, and the cooled liquefied oil enters the oil collecting chamber 11. The bottom plate 9 is a circular flat plate, and the side wall 10 is a hollow cylindrical shape. The breather valve 3 is installed in the center of the circular flat plate to ensure that the discharged oil and gas can be evenly distributed in the oil collecting part 6. The bottom of the breather valve 3 is a valve bottom plate 12. A sealing gasket 13 is provided between the valve bottom plate 12 and the bottom plate 9 to prevent the liquid oil in the oil collecting part 6 from flowing into the outside through the gap between the valve bottom plate 12 and the bottom plate 9, causing leakage. The dust cover 5 includes an upper cover surface 14 and a side flange 15. An exhaust gap 16 is provided between the side flange 15 and the oil collecting chamber 11, and an exhaust hole 8 is located on one side of the exhaust gap 16. The side flange 15 is used to prevent external dust from entering the condensation device. The gap does not affect gas discharge but can affect dust entry. The dust cover 5 covers the oil collecting section 6 and is connected to the breather valve 3 by a tightening bolt 17. The tightening bolt 17 secures the breather valve 3 and the dust cover 5. The upper end of the tightening bolt 17 is connected to the center of the upper cover surface 14 of the dust cover 5, and the lower end of the tightening bolt 17 is connected to the center of the upper end face of the breather valve 3. Because the dust cover 5, the oil collecting section 6, and the breather valve 3 are all cylindrical, the dust cover 5 can rotate above the oil collecting section 6. A filter screen 18 is provided at the connection between the oil collecting section 6 and the return oil pipe 7. The filter screen 18 is used to prevent impurities from entering the return oil pipe 7 and causing contamination. The condensation recovery device is connected to a cooling device, which is a water storage tank 19 covering the bottom and outer side of the oil collection section 6. The outer surface of the water storage tank 19 is covered with heat dissipation fins. The water storage tank 19 enhances the cooling effect of the oil collection section 6, and the heat dissipation fins further enhance its cooling effect. The water storage tank 19 includes a horizontally shaped, sheet-like water tank 20 and a vertically shaped, sheet-like water tank 21 that are interconnected. The inlet is located in the horizontal water tank 20, and the outlet is located in the vertical water tank 21. The sheet-like shape of the water tanks allows for easier contact with the outer surface of the oil collection section 6. The inlet and outlet are used to replace the cooling water. The inlet is located at the bottom, and the outlet is located at the top, allowing water to fill the water storage tank 19 before flowing out, ensuring the tank is fully filled with cooling water and resulting in better cooling.

[0024] The present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the invention. The descriptions of the embodiments are only for the purpose of helping to understand the invention and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An oil and gas environmental protection recovery device, characterized in that... The device includes an exhaust pipe with an exhaust port at its top. A breather valve covers the exhaust port and has a valve opening for oil and gas to escape. A condensation recovery device covers the outside of the breather valve. This device includes a dust cover, an oil collection section, and a return oil pipe. The dust cover covers the oil collection section, which is located around the breather valve. An exhaust port is located at the top of the oil collection section, and the return oil pipe connects the bottom of the oil collection section to the exhaust pipe. Oil and gas sequentially enter the oil collection section through the exhaust port for cooling and liquefaction. The liquefied oil enters the exhaust pipe through the return oil pipe, while ordinary air is discharged to the outside through the exhaust port. The valve port faces downwards, and the oil collecting part includes a bottom plate and a side wall. The bottom plate, the side wall, and the breather valve form an oil collecting chamber. The base plate is a circular flat plate, the side wall is a hollow column, and the breather valve is installed in the center of the circular flat plate. The dust cover includes an upper cover surface and a side flange, and an exhaust gap is provided between the side flange and the oil collection chamber, with an exhaust hole located on one side of the exhaust gap; The condensation recovery device is connected to a cooling device, which is a water tank covering the bottom and outside of the oil collection section, and heat dissipation fins are distributed on the outer surface of the water tank.

2. The oil and gas environmental protection recovery device according to claim 1, characterized in that... The bottom of the breathing valve is a valve base plate, and a sealing gasket is provided between the valve base plate and the base plate.

3. The oil and gas environmental protection recovery device according to claim 1, characterized in that... The dust cover covers the oil collection section and is connected to the breather valve by tightening bolts.

4. The oil and gas environmental protection recovery device according to claim 3, characterized in that... The upper end of the tightening bolt is connected to the center of the upper cover surface of the dust cover, and the lower end of the tightening bolt is connected to the center of the upper end surface of the breather valve.

5. The oil and gas environmental protection recovery device according to claim 1, characterized in that... A filter screen is installed at the connection between the oil collection section and the oil return pipe.

6. The oil and gas environmental protection recovery device according to claim 1, characterized in that... The water storage tank includes a horizontal water tank and a vertical water tank, which are interconnected and have a thin sheet-like cross-section. The water inlet is located in the horizontal water tank, and the water outlet is located in the vertical water tank.

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