Rapid defoaming and degassing device for foamed crude oil

Abstract

The invention provides a rapid defoaming and degassing device for foamed crude oil, which can realize efficient defoaming and degassing of the crude oil. Comprising a horizontal tank body serving as a main body space for oil-gas separation and oil-water separation, the horizontal tank body is provided with a liquid inlet, a liquid outlet, a gas outlet and a drain outlet, the liquid inlet and the liquid outlet are formed in the head side and the tail side of the tank body respectively, and the liquid outlet comprises an oil outlet communicated with the upper portion of the side wall of the tail side of the tank body and a water outlet communicated with the lower portion of the side wall of the tank body; the rotational flow pipe is communicated with the liquid inlet in the head side of the tank body, an oil inlet and a first exhaust pipe are arranged on the rotational flow pipe, and the rotational flow pipe is used for introducing crude oil into the tank body through the rotational flow pipe and pre-separating oil and gas in the introduction process; the multiple stages of degassing mechanisms are arranged in the tank body, comprise a first-stage degassing mechanism, a second-stage degassing mechanism and a third-stage degassing mechanism which are sequentially arranged from the head side to the tail side of the tank body, and are used for degassing crude oil; the heating mechanism is arranged at the lower part in the tank body and is used for heating crude oil; and the exhaust mechanism is communicated with the gas outlet at the top of the tank body and is used for exhausting crude oil removed gas.

Description

A rapid defoaming and degassing device for foamed crude oil Technical Field

[0001] This invention belongs to the field of oilfield surface engineering and relates to multiphase separation petrochemical equipment technology, specifically a rapid defoaming and degassing device for foamed crude oil. Background Technology

[0002] Currently, most oilfields worldwide utilize water injection for development, which faces significant water waste and low recovery rates. In response, research into CO2 enhanced oil recovery (EOR) technology is gradually being conducted both domestically and internationally to improve recovery rates and conserve water resources. After CO2 is injected into the reservoir, the crude oil volume expands substantially, increasing formation elastic energy. It also helps the remaining expanded oil to detach from formation water and rock surfaces, becoming mobile, foamable oil, thus increasing displacement efficiency and improving crude oil recovery. Furthermore, under certain pressure, CO2 can extract and vaporize different light hydrocarbon components in the crude oil, reducing its relative density and interfacial tension, thereby enhancing recovery rates.

[0003] On the other hand, CO2 injection causes recombination and precipitation in crude oil, increases carbonic acid corrosion products, and increases the impurity content of the produced fluid. CO2 extraction, light component extraction, and dissolution in crude oil significantly alter the composition and properties of the processed crude oil, as well as the composition of dissolved gas. The differences between CO2-driven produced fluid and traditional water-driven oil recovery result in significant differences in separation characteristics. The foaming agent emulsion in CO2-driven produced fluid is highly stable and difficult to demulsify and dehydrate. Furthermore, the presence of natural surface-active substances such as gums and asphaltenes in crude oil makes it more prone to foaming. The escaping CO2 gas forms a foam layer of a certain thickness on the surface of the produced fluid. The produced fluid, accompanied by a large amount of foam, enters the separator, reducing the separation space, causing level control failure, and decreasing separation efficiency. This is detrimental to subsequent gas-liquid processing and can even lead to overflow accidents in severe cases.

[0004] Chinese patent CN107246253A discloses a suspended degassing device for oil exploration. This device primarily uses the buoyancy of a float to keep the degassing chamber in the drilling fluid, employs a stirring shaft and stirring teeth for agitation, and separates and collects the gas through inclined baffles and vents. While this device can achieve continuous degassing, its overall degassing path is relatively simple, limiting the improvement of degassing efficiency and resulting in unsatisfactory degassing effects. Summary of the Invention

[0005] To reduce the harm of excessive CO2 gas content in crude oil produced fluid to subsequent crude oil processing and improve crude oil defoaming and degassing efficiency, this application provides a rapid defoaming and degassing device for foamed crude oil, which can achieve efficient crude oil defoaming and degassing, and solve the technical problems of highly stable foaming agent emulsions in CO2-driven produced fluid, high pressure in subsequent processing, and difficulty in demulsification and dehydration.

[0006] The technical solution adopted by this application to solve its technical problem is:

[0007] A rapid defoaming and degassing device for foamed crude oil, comprising:

[0008] The horizontal tank, as the main space for oil-gas separation and oil-water separation, has a liquid inlet, a liquid outlet, a gas outlet and a sewage outlet. The liquid inlet and the liquid outlet are located on the front and rear sides of the tank, respectively. The liquid outlet includes an oil outlet connected to the upper side wall of the rear side of the tank and a water outlet connected to the lower side.

[0009] The cyclone tube is connected to the liquid inlet on the head side of the tank. The cyclone tube is equipped with an oil inlet and a first exhaust pipe, which are used to introduce crude oil into the tank through the cyclone tube and to pre-separate oil and gas during the introduction process.

[0010] The multi-stage degassing mechanism is located inside the tank and includes a primary degassing mechanism, a secondary degassing mechanism, and a tertiary degassing mechanism arranged sequentially from the head side to the tail side of the tank, for crude oil degassing.

[0011] The heating mechanism, located in the lower part of the tank, is used to heat the crude oil;

[0012] The exhaust mechanism is connected to the vent at the top of the tank to discharge the crude oil stripping gas.

[0013] Furthermore, the primary degassing mechanism is a baffle cylinder connected to the bottom outlet of the cyclone tube. The bottom of the baffle cylinder is fixedly connected to the inner wall of the bottom of the tank, and there is a gap between the top of the baffle cylinder and the inner wall of the top of the tank to provide space for gas to escape. The top edge of the baffle cylinder is set with a serrated structure.

[0014] Furthermore, the cyclone tube includes a vertical cylindrical body with a conical section at the bottom that extends into the tank; the bottom port of the conical section is connected to a connecting pipe that extends into the baffle cylinder; the oil inlet is connected to the upper side wall of the cyclone tube, and the first exhaust pipe is connected to the top of the cyclone tube.

[0015] Furthermore, the secondary degassing mechanism includes multiple rectifier baffles, the shape of which is adapted to the longitudinal and oblique cross-section of the tank. There are gaps between each rectifier baffle and between each rectifier baffle and the tank. The multiple rectifier baffles are arranged and installed inside the tank in an obliquely upward and downward staggered manner to extend the in-tank travel of the crude oil.

[0016] Furthermore, each rectifier baffle has several through holes on its upper part to promote the upward movement of the crude oil detached gas.

[0017] Furthermore, the three-stage degassing mechanism is an oil-water separation plate installed longitudinally on the rear side of the tank. There are gaps between the top of the oil-water separation plate and the inner wall of the top of the tank, as well as between the surface of the oil-water separation plate and the inner wall of the rear end cap of the tank. The shape of the oil-water separation plate is adapted to the longitudinal section shape of the tank. Several drainage holes are provided at the bottom of the oil-water separation plate.

[0018] Furthermore, the top of the oil-water separator is provided with a serrated weir plate for liquid repellency and degassing.

[0019] Furthermore, the heating mechanism includes an upper heating tube bundle and a lower heating tube bundle arranged horizontally in parallel; both the upper heating tube bundle and the lower heating tube bundle are S-shaped, and they use the same heat medium inlet and heat medium outlet, both of which are located at the tail end of the tank.

[0020] Furthermore, the exhaust mechanism includes an exhaust cylinder, a second exhaust pipe is provided at the top of the exhaust cylinder, and several wire mesh demisters are provided inside the exhaust cylinder from top to bottom.

[0021] Furthermore, the tank is equipped with a level gauge for real-time monitoring of the liquid level inside the tank; the tank is also equipped with a thermometer interface for connecting a temperature sensing device to monitor the temperature inside the tank in real time.

[0022] The beneficial effects of this invention include:

[0023] 1. The main structure of this device uses a cyclone tube as a pre-separator. This pre-separator's gas-liquid two-phase separation is combined with the first, second, and third-stage degassing mechanisms within a horizontal tank. Through innovative design of the connections between components and redesign of the internal components of the defoaming and degassing device, the separation efficiency is significantly higher than the initial estimated efficiency. Using this invention, a single oilfield CO2-driven foamed crude oil produced fluid defoaming and degassing device can meet the CO2 gas removal requirements of CO2-driven foamed crude oil produced fluid, resulting in a near-zero gas mass flow rate at the liquid phase outlet and a liquid content in the exported gas of less than 0.05 g / Nm³. 3 The requirement is that the amount of natural gas exported is less than 0.05 g / Nm³. 3 Liquid content index;

[0024] 2. As a pre-separator, the hydrocyclone tube performs preliminary separation of the gas-bearing produced fluid. The hydrocyclone tube is highly adaptable to the properties of the incoming fluid and is suitable for use in unstable degassing conditions. The low-pressure zone in the central area of ​​the hydrocyclone tube is conducive to the release of dissolved gas from the liquid phase. The swirling shear field inside the hydrocyclone can effectively break the gas-liquid and oil-water interfaces, promoting the aggregation and growth of microbubbles and oil droplets. If there are other requirements, multiple hydrocyclones can be connected in parallel to form an arc-shaped curved surface structure outside the parallel hydrocyclones, which improves the state of the CO2-driven produced fluid entering the inlet and is beneficial to increasing the gas-liquid separation effect of the pre-separator.

[0025] 3. The pre-separator, also known as the cyclone tube outlet, is equipped with a first-stage degassing mechanism, namely a baffle. The baffle not only stabilizes the incoming liquid and buffers it, but also allows the gas-containing liquid at the outlet of the cyclone tube to continuously undergo micro-vortex rotation, maintaining a certain degree of centrifugal force and enhancing the gas-liquid separation of the gas-containing liquid under inertial action. At the same time, the upper outlet of the baffle at the bottom of the pre-separator is designed with a serrated liquid-repellent structure, which helps to break up and precipitate some of the residual gas in the oil and water, which is beneficial to liquid degassing.

[0026] 4. A two-stage degassing mechanism consisting of multiple rectifier baffles is installed. The gas-containing liquid folds up and down along the rectifier baffles, stabilizing the oil-water flow while enhancing the separation effect. Through holes are opened on the rectifier baffles to facilitate the rapid rise of the precipitated gas to the gas phase space at the top of the tank. At the same time, the heating mechanism is laid in the lower part of the entire tank, which can fully heat the incoming liquid according to the characteristics of the incoming liquid. The temperature rise helps to further remove dissolved gas.

[0027] 5. An oil-water separation plate is set as a three-stage degassing mechanism. The oil and water liquids flow stably along the tank and further separate into oil and water. The oil-water liquid containing a small amount of gas passes through multiple rectifier baffles during the separation process and then passes through the sawtooth weir plate of the oil-water separation plate for further degassing. The gas that is broken and separated is collected at the top of the tank and discharged by the exhaust mechanism. After the oil and water are separated, the separated oil enters the oil-water chamber formed between the oil-water separation plate and the tank top wall through the gap between the upper part of the oil-water separation plate and the tank top wall. The separated water enters the oil-water chamber through the drain hole at the bottom of the oil-water separation plate. After the oil and water are stably separated, they are discharged separately.

[0028] 6. The entire defoaming and degassing device is integrated with multiple modules and components, making it easy to skid-mount and transport to the site for installation, and adaptable to the remote oilfield mining environment where transportation is inconvenient. Attached Figure Description

[0029] Figure 1 is a schematic diagram of the main structure of the defoaming and degassing device of the present invention;

[0030] Figure 2 is a schematic diagram of the heating tube bundle structure of the present invention;

[0031] Figure 3 is a schematic diagram of the heating tube bundle structure of the present invention;

[0032] Figure 4 is a schematic diagram of the rectifier baffle structure of the present invention;

[0033] Figure 5 is a schematic diagram of the oil-water separator structure of the present invention.

[0034] In the diagram: 1. Tank body, 2. Swirl tube, 3. First exhaust pipe, 4. Wire mesh demister, 5. Oil inlet, 6. Support pipe, 7. Baffle cylinder, 8. Manhole, 9. Drain outlet, 10. Rectifying baffle, 11. Lower heating tube bundle, 12. Upper heating tube bundle, 13. Water outlet, 14. Heat medium inlet, 15. Heat medium outlet, 16. Oil outlet, 17. Oil-water separator, 18. Exhaust stack, 19. Second exhaust pipe, 20. Thermometer interface, 21. Level gauge. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be noted that the terms "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are only used to distinguish components and should not be construed as indicating or implying relative importance.

[0037] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] Example 1

[0039] To reduce the harm of excessive CO2 gas content in crude oil produced fluid to subsequent crude oil processing, this embodiment provides a reasonable and efficient rapid defoaming and degassing device for foamed crude oil.

[0040] Referring to Figure 1, a horizontal tank 1 is used as the main space for oil-gas separation and oil-water separation. The tank 1 has a liquid inlet on the top left side as shown in Figure 1; an oil outlet 16 is provided above the tail end cap of the tank 1 and a water outlet 13 is provided below it; an air outlet is provided on the top right side of the tank 1 as shown in Figure 1; and sewage outlets 9 are provided on both the left and right sides of the bottom of the tank 1.

[0041] The overall structure of this device is as follows: the cyclone tube 2 is connected to the liquid inlet of the tank 1, and the exhaust pipe 18 is connected to the air outlet of the tank 1; the tank 1 is equipped with a baffle 7, multiple flow straightening baffles 10, and an oil-water separation plate 17 arranged sequentially from the head side to the tail side; the lower part of the tank 1 is also equipped with an upper heating tube bundle 12 and a lower heating tube bundle 11 arranged horizontally and parallel to each other; the tank 1 is also equipped with a level gauge 21 and a thermometer interface 20. The level gauge 21 is used to monitor the liquid level in the tank 1 in real time, and can appropriately increase the processing capacity while ensuring the treatment effect; the thermometer interface 20 is used to connect a temperature sensing device to monitor the liquid temperature change in the tank 1 in real time, and perform degassing treatment at a suitable temperature.

[0042] Specifically: the cyclone tube 2 includes a vertical cylindrical body with a conical section at the bottom that extends into the tank 1; the bottom end of the conical section is connected to a connecting pipe that extends into the baffle cylinder 7; the upper side wall of the cyclone tube 2 is connected to an oil inlet 5, and the top of the cyclone tube 2 is connected to a first exhaust pipe 3, meaning the exhaust port of the cyclone tube 2 is located in its upper space, the tangential oil inlet is located in its middle space, and the bottom outlet is located in its lower space. The cyclone tube 2 is fixed to the tank 1 by a support pipe 6, used to introduce crude oil into the tank 1 through the cyclone tube 2, and to achieve pre-separation of oil and gas during the introduction process; the cyclone tube 2 is equipped with a wire mesh demister 4 located below the first exhaust pipe 3 to capture droplets escaping during the pre-separation process, and the discharged gas is mainly the gas after pre-separation by the cyclone tube 2. The exhaust stack 18 is equipped with a second exhaust pipe 19 at the top, and the exhaust stack 18 is equipped with multiple layers of wire mesh demisters 4 from top to bottom, mainly discharging the gas after gas-liquid separation in the tank 1.

[0043] The bottom of the baffle cylinder 7 is welded to the inner wall of the bottom of the tank 1, and there is a gap between the top of the baffle cylinder 7 and the inner wall of the top of the tank 1 to provide space for gas escape. The top edge of the baffle cylinder 7 is set with a sawtooth structure. The gas-containing liquid at the bottom outlet of the cyclone tube 2 continues to rotate under the action of the baffle cylinder 7, maintaining a micro-vortex state, so that the gas phase and liquid phase in the gas-containing liquid are continuously separated under the action of centrifugal force. The bottom of the baffle cylinder 7 is separated from the bottom of the cyclone tube 2 by a distance to ensure sufficient space to trigger inertial action and stabilize the incoming liquid, playing a buffering role. At the same time, the top edge of the baffle cylinder 7 is set with a sawtooth structure. When the liquid overflows through the upper part of the baffle cylinder 7, it passes through the sawtooth structure, which has the function of separating the liquid from the gas.

[0044] As shown in Figure 4, the shape of the rectifier baffle 10 is adapted to the shape of the longitudinal oblique section of the tank body 1. In this embodiment, the rectifier baffle 10 has a semi-circular structure. There are gaps between each rectifier baffle 10 and between each rectifier baffle 10 and the tank body 1. The multiple rectifier baffles 10 are arranged and installed inside the tank body 1 in an obliquely upward and downward staggered manner, which increases the travel distance of the liquid in the tank, enhances the inertial effect of the liquid, and improves its degassing effect. At the same time, multiple through holes are arranged on the rectifier baffle 10 to facilitate the rapid rise of the precipitated gas to the gas phase space at the top of the tank body 1.

[0045] As shown in Figure 5, the oil-water separator 17 is longitudinally installed on the rear side of the tank body 1 and welded to the lower wall of the tank body 1. There are gaps between the top of the oil-water separator 17 and the inner wall of the top of the tank body 1, and between the plate surface and the inner wall of the tail end cap of the tank body 1. The right side of the oil-water separator 17 is an oil-water separation zone, including the tank body 1 and the end cap. The separated oil and water are stably stratified in this oil-water separation zone and discharged from the tank body 1 through the upper oil outlet 16 and the lower water outlet 13. The shape of the oil-water separator 17 matches the longitudinal section shape of the tank body 1. In this embodiment, the oil-water separator 17 has a semi-circular structure. Several drainage holes are provided at the bottom of the oil-water separator 17 for draining water to the right. A weir plate is installed on the top of the oil-water separator 17 via a weir plate support plate. The left and right sides of the weir plate are connected to the inner wall of the tank body 1, and the lower side is connected to the weir plate support plate. The top is set with a serrated edge to facilitate liquid evaporation and degassing.

[0046] As shown in Figures 2 and 3, both the upper heating tube bundle 12 and the lower heating tube bundle 11 are S-shaped and share the same heat medium inlet 14 and outlet 15. Both the heat medium inlet 14 and outlet 15 are located at the tail end cap of the tank body 1. The upper heating tube bundle 12 and the lower heating tube bundle 11 cover the entire lower part of the tank body 1, passing through the flow-rectifying baffle 10 and the oil-water separation plate 17. Both the flow-rectifying baffle 10 and the oil-water separation plate 17 have circular holes to accommodate the passage of the heating tube bundles. The arrangement of the upper heating tube bundle 12 and the lower heating tube bundle 11 in two rows and as a whole helps to fully heat the incoming liquid, reduce the gas-liquid interfacial tension, and enhance the degassing effect.

[0047] Example 2

[0048] Based on the device structure described in Example 1, this example will describe the working method of the foamed crude oil rapid defoaming and degassing device: CO2-driven produced liquid is fed into the oil inlet 5 of the cyclone tube 2. After gas-liquid separation is achieved in the cyclone tube 2, the gas is discharged from the first exhaust pipe 3 at the top of the cyclone tube 2. The oil and water carrying some gas enter the lower baffle cylinder 7. The liquid at the bottom outlet of the cyclone tube 2 has a certain velocity and impacts the bottom of the baffle cylinder 7 under the action of inertia. The gas and liquid are separated under the action of inertia. The gas escapes upward and the liquid containing gas gradually accumulates upward, exceeding the top wall of the baffle cylinder 7, and flows into the tank 1 through the sawtooth structure.

[0049] The oil-water mixture containing a small amount of gas flows stably along the tank 1 and further separates into oil and water. During the separation process, the gas that is broken up and separated by the liquefaction structure such as the rectifier baffle 10 and the sawtooth weir plate of the oil-water separation plate 17 is collected at the top of the tank 1 and enters the exhaust stack 18. In the exhaust stack 18, the entrained liquid is further removed by the wire mesh demister 4 and then the gas is discharged. The oil separated after the oil and water are separated enters the oil-water chamber through the gap between the upper part of the oil-water separation plate 17 and the wall of the tank 1, and the water separated enters the oil-water chamber through the circular drain hole at the lower part of the oil-water separation plate 17. After the oil and water are stably separated, they are discharged through the oil outlet 16 and the water outlet 13 respectively.

[0050] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A rapid defoaming and degassing device for foamed crude oil, characterized in that, include: The horizontal tank (1), serving as the main space for oil-gas separation and oil-water separation, has an inlet, an outlet, an outlet, and a drain (9). The inlet and outlet are located on the head and tail sides of the tank (1), respectively. The outlet includes an oil outlet (16) connected to the upper side wall of the tail side of the tank (1) and a water outlet (13) below it. The cyclone pipe (2) is connected to the inlet on the head side of the tank (1). The cyclone pipe (2) is equipped with an oil inlet (5) and a first exhaust pipe (9). 3) Used to introduce crude oil into the tank (1) through the cyclone pipe (2) and to pre-separate oil and gas during the introduction process; multi-stage degassing mechanism, all located in the tank (1), including a first-stage degassing mechanism, a second-stage degassing mechanism and a third-stage degassing mechanism arranged sequentially from the head side to the tail side of the tank (1), for crude oil degassing; heating mechanism, located in the lower part of the tank (1), for heating crude oil; exhaust mechanism, connected to the exhaust port at the top of the tank (1), for discharging crude oil degassing gas.

2. The rapid defoaming and degassing device for foamed crude oil according to claim 1, characterized in that, The primary degassing mechanism is a baffle cylinder (7) connected to the bottom outlet of the cyclone tube (2). The bottom of the baffle cylinder (7) is fixedly connected to the inner wall of the bottom of the tank (1). There is a gap between the top of the baffle cylinder (7) and the inner wall of the top of the tank (1) to provide space for gas to escape. The top edge of the baffle cylinder (7) is set as a sawtooth structure.

3. The rapid defoaming and degassing device for foamed crude oil according to claim 2, characterized in that, The swirling pipe (2) includes a vertical cylindrical body with a conical section at the bottom, which extends into the tank (1); the bottom port of the conical section is connected to a pipe, which extends into the baffle cylinder (7); the oil inlet (5) is connected to the upper side wall of the swirling pipe (2), and the first exhaust pipe (3) is connected to the top of the swirling pipe (2).

4. A rapid defoaming and degassing device for foamed crude oil according to claim 1 or 2, characterized in that, The secondary degassing mechanism includes multiple rectifier baffles (10). The shape of the rectifier baffles (10) is adapted to the longitudinal oblique section shape of the tank body (1). There are gaps between each rectifier baffle (10) and between each rectifier baffle (10) and the tank body (1). The multiple rectifier baffles (10) are arranged and installed inside the tank body (1) in an obliquely upward and downward staggered manner to extend the in-tank travel of crude oil.

5. The rapid defoaming and degassing device for foamed crude oil according to claim 4, characterized in that, Each rectifier baffle (10) has several through holes on its upper part to promote the upward floating of crude oil detached gas.

6. The rapid defoaming and degassing device for foamed crude oil according to claim 4, characterized in that, The three-stage degassing mechanism is an oil-water isolation plate (17) installed longitudinally on the tail side of the tank (1). There are gaps between the top of the oil-water isolation plate (17) and the inner wall of the top of the tank (1), and between the surface of the oil-water isolation plate (17) and the inner wall of the tail end cap of the tank (1). The shape of the oil-water isolation plate (17) is adapted to the longitudinal section shape of the tank (1). Several drainage holes are provided at the bottom of the oil-water isolation plate (17).

7. The rapid defoaming and degassing device for foamed crude oil according to claim 6, characterized in that, The top of the oil-water separator (17) is provided with a serrated weir plate for liquid evaporation and degassing.

8. The rapid defoaming and degassing device for foamed crude oil according to claim 1, characterized in that, The heating mechanism includes an upper heating tube bundle (12) and a lower heating tube bundle (11) arranged horizontally and parallel to each other; both the upper heating tube bundle (12) and the lower heating tube bundle (11) are S-shaped and use the same heat medium inlet (14) and heat medium outlet (15), and both the heat medium inlet (14) and heat medium outlet (15) are located at the tail end of the tank body (1).

9. The rapid defoaming and degassing device for foamed crude oil according to claim 1, characterized in that, The exhaust mechanism includes an exhaust cylinder (18), the top of which is provided with a second exhaust pipe (19), and the interior of the exhaust cylinder (18) is provided with several wire mesh demisters (4) from top to bottom.

10. The rapid defoaming and degassing device for foamed crude oil according to claim 1, characterized in that, The tank (1) is equipped with a level gauge (21) for real-time monitoring of the liquid level inside the tank (1); the tank (1) is also equipped with a thermometer interface (20) for connecting a temperature sensing device to monitor the temperature inside the tank (1) in real time.

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