A device for separating and recovering oil and gas from a moving equipment

Abstract

The utility model relates to oil gas separation recovery technology field of petroleum chemical industry, specifically related to a kind of oil gas separation recovery device for moving equipment.The utility model includes rain and dust protective cover and oil gas deceleration oil guide sleeve, the oil gas deceleration oil guide sleeve upper end portion is provided with baffle hole along circumference, the oil gas deceleration oil guide sleeve lower end portion is provided with reflux hole along circumference, oil gas deceleration oil guide sleeve outer coaxial sleeve is equipped with oil gas separation collection mechanism, the rain and dust protective cover covers the top of the oil gas deceleration oil guide sleeve and is connected with it, for closing device top;The oil gas separation collection mechanism and rain and dust protective cover and oil gas deceleration oil guide sleeve jointly enclose and form separation space, after lubricating oil by oil gas separation collection mechanism separation returns equipment lubricating oil system through oil gas deceleration oil guide sleeve.The utility model structure design is reasonable, environmental adaptability is strong, eliminates security risk, lubricating oil is separated and recovered efficiently, and operating cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of petrochemical oil and gas separation and recovery technology, specifically to an oil and gas separation and recovery device for moving equipment. Background Technology

[0002] During the operation of existing moving equipment, the lubricating oil in the equipment's lubrication system will produce oil vapors due to the increased operating temperature. If these emitted oil vapors are not recovered and treated, it will not only waste lubricating oil and increase production costs, but also pollute the environment. On the other hand, the emitted oil vapors, after condensing upon contact with outside air, are prone to adhering to the equipment body, affecting the equipment's appearance and normal operation.

[0003] Furthermore, directly discharged oil and gas may pose safety hazards, potentially causing a fire if exposed to an open flame. Existing breathing caps also lack effective dust and rain protection, allowing external dust, rainwater, and other impurities to easily enter the lubrication system, causing oil turbidity and emulsification, affecting lubrication quality and equipment lifespan. Therefore, a dynamic equipment oil and gas separation and recovery device capable of solving these problems is needed. Currently, some oil and gas separation and recovery devices on the market suffer from poor separation efficiency, complex structures, and difficulty adapting to harsh working environments, failing to meet actual production needs. Therefore, a highly efficient, reliable, and adaptable oil and gas separation and recovery device is urgently required. Utility Model Content

[0004] The purpose of this utility model is to provide a dynamic equipment oil-gas separation and recovery device. This device can effectively separate and recover oil and gas, so as to realize the separation, recovery and reuse of oil and gas discharged from the lubricating oil system during the operation of dynamic equipment, reduce oil and gas loss and environmental pollution during equipment operation, eliminate safety hazards, and at the same time have good environmental adaptability to dust and rain.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an oil-gas separation and recovery device for dynamic equipment, comprising a rain and dust protective cover and an oil-gas deceleration guide sleeve; the upper end of the oil-gas deceleration guide sleeve is provided with a baffle hole along the circumference, the lower end of the oil-gas deceleration guide sleeve is provided with a return hole along the circumference, an oil-gas separation and collection mechanism is coaxially sleeved on the outside of the oil-gas deceleration guide sleeve, the rain and dust protective cover covers the top of the oil-gas deceleration guide sleeve and is connected to it, for sealing the top of the device; the oil-gas separation and collection mechanism, the rain and dust protective cover and the oil-gas deceleration guide sleeve together enclose a separation space, and the lubricating oil separated by the oil-gas separation and collection mechanism returns to the equipment lubrication oil system through the oil-gas deceleration guide sleeve.

[0006] The oil-gas separation and collection mechanism includes an oil-gas baffle sleeve, an oil collection trough, and a foam net. The oil-gas baffle sleeve and the oil collection trough are coaxially arranged on the outside of the oil-gas deceleration guide sleeve from the inside to the outside. A rain and dust protection cover covers the top opening of the oil-gas deceleration guide sleeve, and the top ends of the oil-gas deceleration guide sleeve and the oil-gas baffle sleeve are respectively connected to the lower end of the rain and dust protection cover. A circular hole is opened at the center of the bottom of the oil collection trough, and the lower end of the oil-gas deceleration guide sleeve is tightly fitted to the circular hole and vertically passes through the circular hole to connect with the equipment lubrication oil system. The foam net is set at the bottom of the oil collection trough, and the lower end of the oil-gas baffle sleeve is set higher than the foam net. The return flow hole is set higher than the bottom surface of the oil collection trough.

[0007] The oil-gas deceleration guide sleeve consists of an upper coarse-diameter section and a lower fine-diameter section. The deflector is located at the top of the coarse-diameter section. The fine-diameter section passes through the oil collection groove and is connected to the equipment's lubrication oil system. The return flow hole is located on the fine-diameter section.

[0008] The baffles are arranged in two rows evenly on the circumference of the coarse diameter section. The diameter of the baffles is 1 to 5 mm, and the spacing between the baffles is 3 to 5 times the diameter.

[0009] Four reflux holes are provided, with a diameter of 5±1mm, and are evenly distributed on the circumference of the narrow section.

[0010] The inner wall of the oil and gas baffle is uniformly provided with spiral guide grooves. The downward inclination angle of the spiral grooves is 30 to 45°, and the distance between adjacent grooves is 69±1mm.

[0011] The foam mesh is horizontally covered at the bottom of the oil collection tank. The foam mesh is a multi-layer stainless steel wire mesh structure with a mesh density of 50-100 mesh and a hydrophobic coating on the surface.

[0012] The oil-gas deceleration guide sleeve and the oil-gas deflector sleeve are welded to the rain and dust protection cover; the narrow section of the oil-gas deflector sleeve and the oil collection groove are welded to each other; the lower end of the narrow section of the deceleration guide sleeve is connected to the lubricating oil system by a threaded seal.

[0013] The rain and dust protection cover adopts an umbrella-shaped rainproof structure with a downward tilt angle of 15-25°, and the edge of the rain and dust protection cover extends beyond the outer circumference of the oil collection tank by 10±1mm.

[0014] The entire oil-gas separation and recovery device of the dynamic equipment is made of stainless steel.

[0015] The effect of the utility model.

[0016] 1. High-efficiency separation and recovery: This utility model avoids the loss of lubricating oil; through the pressure reduction of the double-row baffle holes 6, the baffle of the oil and gas baffle sleeve 3, and the multi-layer action of the foam net 5, the high-efficiency separation of oil and gas is achieved, the recovery and utilization rate of lubricating oil is improved, the loss of lubricating oil in the lubricating oil system is reduced, and the operating cost of equipment is effectively reduced.

[0017] 2. Strong environmental adaptability and elimination of safety hazards: This utility model is made of stainless steel and features a dustproof and rainproof design with a rain and dust protection cover, enabling the device to operate stably in various harsh environments. It prevents oil and gas from adhering to the equipment body, ensuring the hygiene and cleanliness of the equipment body, reducing oil and gas pollution to the surrounding environment, reducing equipment failure and maintenance costs caused by environmental factors, and avoiding safety problems that may be caused by oil and gas condensing and accumulating on the equipment body and encountering high temperatures or fire sources.

[0018] 3. Multifunctional protection: This utility model has good dustproof and rainproof functions, protecting the lubricating oil in the equipment's lubrication system from the influence of the external environment, ensuring that the lubricating oil in the lubrication system is clean and uncontaminated, thereby ensuring that the equipment is in a good lubrication state and achieving the effect of extending the service life of the equipment.

[0019] 4. Reasonable structural design: The threaded connection sealing method of this utility model facilitates installation and disassembly, while ensuring the sealing performance of the device; the structural design of each component works together to optimize the oil-gas separation and recovery process and improve work efficiency.

[0020] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the assembly of this utility model;

[0023] Figure 2 This is a schematic diagram of the oil-gas deceleration guide sleeve of this utility model;

[0024] Figure 3 This is a schematic diagram of the spiral guide groove of this utility model.

[0025] In the diagram: 1. Rain and dust protection cover; 2. Oil and gas deceleration guide sleeve; 3. Oil and gas deflector sleeve; 4. Oil collection tank; 5. Foam net; 6. Deflector hole; 7. Backflow hole; 8. Limiting boss. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example:

[0028] The purpose of this utility model is to provide a dynamic equipment oil-gas separation and recovery device. This device can effectively separate and recover oil and gas, so as to realize the separation, recovery and reuse of oil and gas discharged from the lubricating oil system during the operation of dynamic equipment, reduce oil and gas loss and environmental pollution during equipment operation, eliminate safety hazards, and at the same time have good environmental adaptability to dust and rain.

[0029] Traditional separation devices rely on single adsorption or condensation technologies, resulting in insufficient separation efficiency and susceptibility to blockage caused by rain and dust contamination. Their baffle structure design is crude, leading to short oil-gas contact time and difficulty in capturing fine oil droplets. Furthermore, the poor sealing of the oil return system causes secondary leaks. Therefore, there is a need to develop an integrated device that combines pressure reduction, baffles, and adsorption functions to improve reliability and oil recovery rate under harsh operating conditions.

[0030] like Figure 1 The illustrated oil-gas separation and recovery device for dynamic equipment includes a rain and dust protection cover 1 and an oil-gas deceleration guide sleeve 2. The device is characterized in that: an oil-gas separation and collection mechanism is coaxially sleeved around the oil-gas deceleration guide sleeve 2; the rain and dust protection cover 1 covers and connects to the top of the oil-gas deceleration guide sleeve 2 to seal the top of the device; a baffle hole 6 is provided along the circumference at the upper end of the oil-gas deceleration guide sleeve 2, and a return flow hole 7 is provided along the circumference at the lower end of the oil-gas deceleration guide sleeve 2; the oil-gas separation and collection mechanism, the rain and dust protection cover 1, and the oil-gas deceleration guide sleeve 2 together form a separation space; the lubricating oil separated by the oil-gas separation and collection mechanism returns to the equipment's lubrication system through the oil-gas deceleration guide sleeve 2.

[0031] Furthermore, the oil-gas separation and collection mechanism includes an oil-gas baffle sleeve 3, an oil collection trough 4, and a foam net 5; the oil-gas baffle sleeve 3 and the oil collection trough 4 are coaxially arranged from the inside to the outside of the oil-gas deceleration guide sleeve 2; the rain and dust protection cover 1 covers the top opening of the oil-gas deceleration guide sleeve 2, and the top ends of the oil-gas deceleration guide sleeve 2 and the oil-gas baffle sleeve 3 are respectively connected to the lower end of the rain and dust protection cover 1; a circular hole is opened at the center of the oil collection trough 4, and the diameter of the hole is the same as that of the lower end of the oil-gas deceleration guide sleeve 2. The end pipe diameters are compatible. A circular hole is opened at the center of the bottom of the oil collection tank 4. The lower end of the oil-gas deceleration guide sleeve 2 is tightly fitted to the circular hole and passes vertically through the circular hole to connect with the equipment lubrication oil system. The foam net 5 is set at the bottom of the oil collection tank 4, and the lower end of the oil-gas deceleration guide sleeve 3 is higher than the foam net 5. The upper end of the oil-gas deceleration guide sleeve 2 is provided with a deceleration hole 6 along the circumference, and the lower end of the oil-gas deceleration guide sleeve 2 is provided with a return hole 7 along the circumference, and the return hole 7 is set higher than the bottom surface of the oil collection tank 4.

[0032] Furthermore, such as Figure 2 As shown, the oil-gas deceleration guide sleeve 2 consists of an upper coarse-diameter section and a lower fine-diameter section, with a baffle 6 located at the top of the coarse-diameter section. The fine-diameter section passes through the oil collection groove 4 and connects to the equipment's lubrication oil system, with a return flow hole 7 located on the fine-diameter section. The diameter of the oil-gas deceleration guide sleeve 2 gradually increases from fine to thick, causing the oil and gas to gradually cool and depressurize during the ascent. The preferred length ratio of the coarse-diameter section to the fine-diameter section is 1 / 2 to 3 / 5 of the total length of the deceleration guide sleeve 2.

[0033] When the oil and gas discharged from the lubricating oil system enter the oil and gas deceleration guide sleeve 2, it first undergoes gradual cooling and pressure reduction from the narrow diameter section to the wide diameter section, and then passes through the baffle hole 6, is reflected to the oil and gas baffle sleeve 3, and reaches the oil collection tank 4 through the baffle effect, thereby achieving the effect of pressure reduction; the oil and gas after pressure reduction can enter the oil collection tank 4 more stably, pass through the foam net 5 for oil molecules and air separation, and flow back to the lubricating oil station for reuse.

[0034] Furthermore, such as Figure 2 As shown, the baffle holes 6 are arranged in two rows evenly on the circumference of the coarse diameter section. The diameter of the baffle holes 6 is 1 to 2 mm, and the spacing between the holes is 3 to 5 times the diameter. When the oil and gas entering the oil and gas deceleration guide sleeve 2 are depressurized through the double row of baffle holes 6, and the oil and gas are depressurized again by the baffle effect when passing through the oil and gas baffle sleeve 3, the oil and gas flow rate and pressure are further reduced.

[0035] Furthermore, such as Figure 2 As shown, four return holes 7 are provided, with a diameter of 5±1mm, and are evenly distributed on the circumference of the narrow section. The lubricating oil absorbed by the foam net 5 returns to the equipment lubricating oil system through the return holes 7.

[0036] Furthermore, such as Figure 1As shown, the outermost protective structure of the rain and dust protection cover 1 is designed with an umbrella-shaped rainproof structure with a downward tilt angle of 15° to 25°. The edge of the rain and dust protection cover 1 extends beyond the outer circumference of the oil collection tank 4 by 10±1mm. This design prevents rainwater from directly entering the oil-gas separation and recovery device of the moving equipment, ensuring the normal operation of the oil-gas separation and recovery device even in rainy weather, thus playing a role in rain protection. It can also effectively prevent external dust from entering the interior of the oil-gas separation and recovery device of the moving equipment, thereby playing a role in dust protection and achieving drip water guidance and dust isolation.

[0037] Furthermore, such as Figure 3 As shown, the inner wall of the oil-gas baffle sleeve 3 is uniformly provided with spiral guide grooves. The spiral guide grooves are inclined downward at an angle of 30° to 45°, and the distance between adjacent grooves is 69±1mm. This design helps to optimize the oil-gas separation efficiency, ensuring sufficient space for thorough mixing of oil and gas while avoiding excessive resistance affecting the overall flow rate. The spiral grooves extend the oil-gas travel path to 1.8-2.5 times its original length, increasing the residence time of oil and gas within the oil-gas baffle sleeve 3, thereby improving the separation effect. The smooth surface of the spiral guide grooves effectively reduces frictional resistance during oil-gas flow, improving the flow efficiency. Simultaneously, the design of these guide grooves generates a vortex effect when oil and gas pass through the baffle sleeve, further optimizing the oil-gas separation and mixing process, ensuring optimal separation in every minute rotation.

[0038] Furthermore, such as Figure 1 As shown, the foam mesh 5 horizontally covers the bottom of the oil collection tank 4, used to adsorb oil molecules in the oil and gas and achieve gas-liquid separation. The foam mesh 5 is a multi-layer stainless steel wire mesh structure, composed of stainless steel wire mesh with a mesh density of 50-100 mesh, and coated with a hydrophobic coating. When the depressurized oil and gas enter the oil and gas baffle sleeve 3, the oil and gas reach the oil collection tank 4 through the baffle, where they are condensed, adsorbed, and separated from air by the foam mesh 5. The foam mesh 5 adsorbs some impurities in the oil and gas, and finally flows back to the lubricating oil system. This device improves the oil molecule capture rate and has good condensation, adsorption, baffle, and oil molecule and air separation effects. The multi-layer arrangement increases the contact time between the oil and gas and the foam mesh, improving the recovery efficiency.

[0039] When the oil and gas pass through the oil and gas baffle sleeve 3, the flow direction is changed, which further increases the contact time between the oil and gas and the foam net 5, thus improving the recovery efficiency. The treated oil and gas are then recycled back into the lubricating oil system, thereby realizing the recycling of oil and gas.

[0040] Furthermore, the oil-gas deceleration guide sleeve 2 and the oil-gas deflector sleeve 3 are welded to the rain and dust protection cover 1; the narrow section of the oil-gas deflector sleeve 3 and the oil collection groove 4 are welded together.

[0041] The device is made entirely of stainless steel, which is corrosion-resistant and has high strength, enabling it to adapt to various harsh working environments, such as high temperature, humidity, and corrosive gases, ensuring that the device can operate stably for a long time in various harsh working environments.

[0042] Installation Process: Connect the oil-gas separation and recovery device of this equipment to the lubricating oil system via a threaded connection, ensuring a tight and leak-free connection. Simultaneously, install the rain and dust protection cover 1 at a suitable position on the top of the device. The lower end of the narrow-diameter section of the oil-gas deceleration guide sleeve 2 is connected to the lubricating oil system via a threaded connection, ensuring a secure and effective seal. This connection method not only facilitates installation and disassembly but also ensures no oil or gas leakage, guaranteeing the sealing and safety of the oil-gas separation and recovery process, achieving zero-leakage return.

[0043] The upper part of the thread connecting the narrow section of the deceleration oil guide sleeve 2 to the lubrication system is provided with a limiting boss 8, and an "O-ring" is used here to enhance the outlet sealing effect.

[0044] Maintenance guidelines: Regularly inspect the oil-gas separation and recovery device of the moving equipment, replace the sealing rings as needed, and clean or replace the foam net 5 regularly to ensure its good condensation, adsorption, oil molecule and air separation effect.

[0045] Working Process: During equipment operation, when the lubricating oil system discharges oil and gas, the oil and gas first enter the oil and gas deceleration guide sleeve 2, where it is depressurized through the double-row baffle holes 6 at the top. Then, it passes through the oil and gas baffle sleeve 3, where it undergoes a baffle effect, further reducing the flow rate and pressure. The depressurized and baffled oil and gas enter the oil collection tank 4. Under the action of the foam net 5 inside the oil collection tank 4, oil molecules and air in the oil and gas are separated. The foam net 5 adsorbs impurities, and the separated lubricating oil flows back to the lubricating oil station for reuse, while the air is discharged outside the device through a specific channel. Throughout the entire working process, the rain and dust protection cover 1 continuously performs its dust and rain protection function. External dust and rainwater are blocked by the dust cover and cannot enter the oil and gas separation and recovery device and the equipment's lubricating oil system, ensuring a stable internal environment for the device.

[0046] This invention boasts advantages such as high safety, prevention of lubricant loss at lubrication stations, reduced environmental pollution, elimination of safety hazards, dust prevention, simple structure, ease of operation, low cost, and multifunctionality.

[0047] Where there is no conflict, those skilled in the art can combine the relevant technical features in the above examples according to the actual situation to achieve the corresponding technical effects. Specific details of the various combinations will not be elaborated here.

[0048] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0049] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0050] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modifications, equivalent variations, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. A dynamic equipment oil-gas separation and recovery device, comprising a rain and dust protection cover (1) and an oil-gas deceleration guide sleeve (2), characterized in that: The upper end of the oil-gas deceleration guide sleeve (2) is provided with a baffle hole (6) along the circumference, and the lower end of the oil-gas deceleration guide sleeve (2) is provided with a return hole (7) along the circumference. An oil-gas separation and collection mechanism is coaxially sleeved on the outside of the oil-gas deceleration guide sleeve (2). The rain and dust protection cover (1) covers the top of the oil-gas deceleration guide sleeve (2) and is connected to it to seal the top of the device. The oil-gas separation and collection mechanism, the rain and dust protection cover (1) and the oil-gas deceleration guide sleeve (2) together form a separation space. The lubricating oil separated by the oil-gas separation and collection mechanism returns to the equipment lubricating oil system through the oil-gas deceleration guide sleeve (2).

2. The oil-gas separation and recovery device for moving equipment according to claim 1, characterized in that: The oil-gas separation and collection mechanism includes an oil-gas baffle sleeve (3), an oil collection tank (4), and a foam net (5); the oil-gas baffle sleeve (3) and the oil collection tank (4) are coaxially arranged from the inside to the outside of the oil-gas deceleration guide sleeve (2); the rain and dust protection cover (1) covers the top opening of the oil-gas deceleration guide sleeve (2), and the top ends of the oil-gas deceleration guide sleeve (2) and the oil-gas baffle sleeve (3) are respectively connected to the lower end of the rain and dust protection cover (1); a round hole is opened at the center of the bottom of the oil collection tank (4), and the lower end of the oil-gas deceleration guide sleeve (2) is tightly fitted to the round hole and vertically passes through the round hole to connect with the equipment lubrication oil system; the foam net (5) is set at the bottom of the oil collection tank (4), and the lower end of the oil-gas baffle sleeve (3) is set higher than the foam net (5), and the return hole (7) is set higher than the bottom surface of the oil collection tank (4).

3. The dynamic equipment oil-gas separation and recovery device according to claim 2, characterized in that: The oil-gas deceleration guide sleeve (2) consists of a large diameter section at the upper end and a small diameter section at the lower end. The baffle hole (6) is located at the top of the large diameter section. The small diameter section passes through the oil collection groove (4) and is connected to the equipment lubrication oil system. The return flow hole (7) is located on the small diameter section.

4. The oil-gas separation and recovery device for moving equipment according to claim 3, characterized in that: The baffle holes (6) are arranged in two rows evenly on the circumference of the coarse diameter section. The diameter of the baffle holes (6) is 1 to 2 mm and the spacing between the holes is 3 to 5 times the diameter.

5. The oil-gas separation and recovery device for moving equipment according to claim 3, characterized in that: Four reflux holes (7) are provided, with a diameter of 5±1mm, and are evenly distributed on the circumference of the narrow diameter section.

6. The oil-gas separation and recovery device for moving equipment according to claim 2, characterized in that: The inner wall of the oil and gas baffle sleeve (3) is uniformly provided with spiral guide grooves. The downward tilt angle of the spiral grooves is 30 to 45° and the distance between adjacent grooves is 69 ± 1 mm.

7. The oil-gas separation and recovery device for moving equipment according to claim 2, characterized in that: The foam mesh (5) is horizontally covered at the bottom of the oil collection tank (4). The foam mesh (5) is a multi-layer stainless steel wire mesh superimposed structure with a mesh density of 50 to 100 meshes and a hydrophobic coating on the surface.

8. The oil-gas separation and recovery device for moving equipment according to claim 2, characterized in that: The oil-gas deceleration guide sleeve (2) and the oil-gas deflector sleeve (3) are welded to the rain and dust protection cover (1); the narrow section of the oil-gas deflector sleeve (3) and the oil collection groove (4) are welded together; the lower end of the narrow section of the deceleration guide sleeve (2) is connected to the lubricating oil system by a threaded seal.

9. The oil-gas separation and recovery device for moving equipment according to claim 1, characterized in that: The rain and dust protection cover (1) adopts an umbrella-shaped rainproof structure with a downward tilt angle of 15 to 25°. The edge of the rain and dust protection cover (1) extends beyond the outer circumference of the oil collection groove (4) by 10 ± 1 mm.

10. The dynamic equipment oil-gas separation and recovery device according to any one of claims 1 to 9, characterized in that: The entire oil-gas separation and recovery device of the dynamic equipment is made of stainless steel.

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