Normal-pressure membrane separation oil gas recovery treatment system and method and related products

Abstract

The invention discloses a normal-pressure membrane separation oil gas recovery processing system and method and related products, the system comprises a first oil gas tank and a second oil gas tank, and the system further comprises a pretreatment component connected with the first oil gas tank and used for pretreating oil gas to obtain first gas; the separation component is connected with the pretreatment component and used for separating the first gas to obtain second gas and third gas, the second gas comprises gaseous petroleum, and the third gas comprises air; and the recovery component is connected with the separation component and is used for recovering the third gas so as to recover petroleum from the oil gas. Through the scheme disclosed by the invention, oil gas recovery can be carried out at normal temperature, and the oil gas recovery efficiency can be improved while the oil gas recovery cost is reduced.

Description

Technical Field

[0001] The present disclosure generally relates to the field of petroleum technology. More specifically, the present disclosure relates to an atmospheric pressure membrane separation oil and gas recovery and processing system, method and related products. Background Art

[0002] Petroleum and its various products are mixtures of various hydrocarbons. In the process of loading, unloading, storage, and sales of oil products, there are inevitably oil and gas evaporation and leakage. The evaporated and leaked oil and gas are a mixture of hydrocarbons and air, which are precursors to chemical pollution and ozone generation. They not only pollute the atmospheric environment, but also cause waste of resources and pose safety hazards. Recycling oil and gas can reduce pollution to the atmosphere and achieve the purpose of protecting the environment.

[0003] When the underground oil tank of the gas station reaches a certain pressure, the oil and gas recovery and processing device is started to process the oil and gas, convert the oil and gas in the oil tank into gasoline and flow back into the oil tank, and discharge the treated oil and gas that meet the standard requirements through the exhaust pipe. Specifically, the process methods for oil and gas recovery can include adsorption, absorption, and condensation. When the adsorption method is used, the mixed oil and gas enter the adsorption tank, where the oil and gas components are adsorbed on the surface by the adsorbent (generally activated carbon), while the air can be directly discharged because of its low adsorption force on the adsorbent. When the adsorbent reaches a certain adsorption amount and is saturated, the adsorption tank will switch to the desorption stage, and release the oil and gas previously adsorbed by the adsorbent by vacuum decompression and desorption, and suck it into the oil tank with a vacuum pump or liquefy it by other methods for recovery. However, the activated carbon adsorption of the aforementioned adsorption method will be saturated, need to be replaced regularly, and have high maintenance costs, and the activated carbon after adsorption needs to be treated as hazardous waste, which may cause secondary pollution. When the absorption method is used, the recovery rate of the absorption method is usually low, generally only about 80%, and cannot reach higher recovery standards. When using the condensation method, due to the high energy consumption of low-temperature refrigeration, for high-concentration oil and gas, the condensation equipment may need to be larger in scale, resulting in higher manufacturing costs. In addition, when the oil and gas condensation temperature is lower than 0°C, frost will form and regular defrosting is required.

[0004] In view of this, there is an urgent need to provide a normal pressure membrane separation oil and gas recovery processing system, method and related product solutions, so that oil and gas recovery can be carried out at room temperature, which can reduce the cost of oil and gas recovery while improving the efficiency of oil and gas recovery. Summary of the invention

[0005] In order to at least solve one or more of the technical problems mentioned above, the present disclosure proposes a solution of an atmospheric pressure membrane separation oil and gas recovery and processing system, method and related products in multiple aspects.

[0006] In the first aspect, the present disclosure provides an atmospheric pressure membrane separation oil and gas recovery and processing system, the system comprising a first oil and gas tank and a second oil and gas tank, the system comprising: a pretreatment component connected to the first oil and gas tank, for pretreating the oil and gas to obtain a first gas; a separation component connected to the pretreatment component, for separating the first gas to obtain a second gas and a third gas, wherein the second gas comprises gaseous petroleum and the third gas comprises air; a recovery component connected to the separation component, for recovering the third gas to achieve recovery of petroleum in the oil and gas.

[0007] In some embodiments, the pretreatment component includes a filter unit and a separator; wherein the filter unit is used to filter impurities in the oil gas to obtain a first oil gas, wherein the first oil gas includes gaseous gasoline, gaseous air and mist gasoline; the separator is used to liquefy the mist gasoline to obtain a first gas and a first liquid, wherein the first gas includes gaseous gasoline and gaseous air;

[0008] In some embodiments, the separation portion includes a containing chamber, the first liquid is located in the containing chamber, and when the first liquid reaches a preset value, the oil and gas tank recovers the first liquid.

[0009] In some embodiments, the separation component includes one or more separation membrane groups.

[0010] In some embodiments, the plurality of separation membrane groups are connected in series to improve the efficiency of recovering oil.

[0011] In some embodiments, the recovery component includes a vacuum pump, one end of which is connected to the second oil and gas tank, and the other end of which is connected to the separation component, for providing negative pressure to the separation component to recover the third gas.

[0012] In some embodiments, the system further includes a connecting component, which is connected to the first oil and gas tank and the second oil and gas tank to balance the pressure of the oil and gas tanks.

[0013] In the second aspect, the present disclosure provides a method for an atmospheric pressure membrane separation oil and gas recovery and processing system, wherein the oil and gas tank comprises a first oil and gas tank and a second oil and gas tank, and the atmospheric pressure membrane separation oil and gas recovery and processing system comprises a pretreatment component connected to the first oil and gas tank, a separation component connected to the pretreatment component, and a recovery component connected to the separation component, and the method comprises: using the pretreatment component to pretreat the oil and gas to obtain a first gas; using the separation component to separate the first gas to obtain a second gas and a third gas; and using the recovery component to recover the third gas to achieve recovery of petroleum in the oil and gas.

[0014] In a third aspect, the present disclosure provides an electronic device comprising: a processor; and a memory storing program instructions for a method for an atmospheric pressure membrane separation oil and gas recovery and processing system, wherein when the program instructions are executed by the processor, the electronic device executes the method described in the second aspect.

[0015] In a fourth aspect, the present disclosure provides a computer-readable storage medium storing program instructions for a method for an atmospheric pressure membrane separation oil and gas recovery processing system, which, when executed by a processor, implements the method described in the second aspect.

[0016] By means of the atmospheric pressure membrane separation oil and gas recovery processing system, method and related products provided above, oil and gas recovery can be performed under atmospheric pressure, which can reduce the cost of oil and gas recovery while improving the efficiency of oil and gas recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description below with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0018] Figure 1 An exemplary block diagram of an atmospheric pressure membrane separation oil and gas recovery processing system according to an embodiment of the present disclosure is shown;

[0019] Figure 2 A schematic diagram showing the structure of a separation membrane group according to some embodiments of the present disclosure is shown;

[0020] Figure 3a A schematic diagram showing a structure of multiple separation membrane groups connected in series in some embodiments of the present disclosure;

[0021] Figure 3b A schematic diagram showing the structure of multiple separation membrane groups connected in parallel in some embodiments of the present disclosure;

[0022] Figure 4 A schematic diagram showing an atmospheric pressure membrane separation oil and gas recovery and processing system according to some embodiments of the present disclosure is shown;

[0023] Figure 5 A flowchart showing a method 500 of an atmospheric pressure membrane separation oil and gas recovery processing system according to some embodiments of the present disclosure; and

[0024] Figure 6 An exemplary block diagram of an electronic device 600 for an atmospheric pressure membrane separation oil and gas recovery processing system according to some embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0026] It should be understood that the terms "include" and "comprising" used in the specification and claims of the present disclosure indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0027] It should also be understood that the terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used in this disclosure and claims, the singular forms of "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in this disclosure and claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations.

[0028] As used in this specification and claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0029] The specific implementation of the present disclosure is described in detail below with reference to the accompanying drawings.

[0030] Figure 1 An exemplary block diagram of the atmospheric pressure membrane separation oil and gas recovery processing system of the present disclosure is shown as follows: Figure 1 As shown, the system includes a first oil and gas tank and a second oil and gas tank, and the system also includes: a pretreatment component 10, connected to the first oil and gas tank, for pretreatment of the oil and gas to obtain a first gas; a separation component 20, connected to the pretreatment component, for separation of the first gas to obtain a second gas and a third gas, wherein the second gas includes gaseous petroleum, and the third gas includes air; a recovery component 30, connected to the separation component, for recovery of the third gas, so as to achieve recovery of petroleum in the mixed oil and gas.

[0031] In some embodiments, the aforementioned oil and gas tanks may include buried oil tanks, which can be installed below the ground, have stable fire and explosion resistance, reduce the safety distance between the oil storage tanks and between the tanks and adjacent buildings, save land resources, and reduce the total cost of the project. In addition, the required distance between the buried oil tanks and other buildings is smaller, which is safer and more reliable than the above-ground oil tanks, and it is easy to extinguish even if a fire occurs.

[0032] In some embodiments, the first oil and gas tank may be a high-grade buried oil tank, and the second oil and gas tank may be a low-grade oil and gas tank. Specifically, the low-grade oil and gas tank is usually used to connect to the return gas channel, that is, to collect and store the oil and gas released during the refueling process. The high-grade buried oil tank can be used to connect to the gas extraction channel, which has the function of extracting gas and is used for the collection and preliminary treatment of oil and gas.

[0033] In some embodiments, the aforementioned oil and gas may include volatile organic compounds (VOCs) generated during the storage, receipt and delivery of oil products in oil reservoirs, wherein the aforementioned VOCs may include volatile organic compounds, organic compounds participating in atmospheric photochemical reactions, or organic compounds determined in accordance with relevant regulations.

[0034] In some embodiments, the gas station oil and gas recovery and processing system may include one-stage oil and gas recovery, two-stage oil and gas recovery, and three-stage oil and gas recovery. The first-stage oil and gas recovery refers to when the tanker truck unloads oil at the gas station, the oil in the car is transported to the underground oil tank of the gas station through the oil unloading pipe, and at the same time, the oil and gas in the underground oil tank of the gas station is recovered into the car tanker through the oil and gas recovery pipeline, and then transported to the oil storage depot for centralized recovery and converted into gasoline. The second-stage oil and gas recovery refers to when the gas station refuels the motor vehicle, the oil and gas in the fuel tank is recovered into the underground oil tank through the recovery type refueling gun during the refueling process. The three-stage oil and gas recovery refers to when the underground oil tank of the gas station equipped with the oil and gas processing device reaches a certain pressure, the processing device starts to process the oil and gas, converts the oil and gas in the oil storage tank into gasoline and flows back into the oil storage tank, and discharges the processed oil and gas that meets the standard requirements through the exhaust pipe.

[0035] In some embodiments, the mixed oil and gas recovery system may include an intake pipe, one end of which may be connected to a high-grade buried oil pipe, and the other end of which may be connected to a pre-treatment component, and may be used to transport the oil and gas in the high-grade buried oil pipe to the pre-treatment component. In some embodiments, a pressure sensor may be provided on the intake pipe to detect the pressure of the oil and gas in the intake pipe.

[0036] In some embodiments, pre-treating the oil and gas may include filtering and separating the aforementioned oil and gas. Specifically, the aforementioned oil and gas may include impurities, gaseous air, gaseous petroleum, and petroleum in a mist droplet state. The aforementioned impurities may include rust, powder or dust in the pipeline, etc. The impurities in the aforementioned oil and gas may be filtered out by a filtering device. Furthermore, the aforementioned petroleum in a mist droplet state and gaseous petroleum and air may be separated by a separation device. The aforementioned gaseous petroleum and air may be output through the output end of the pre-treatment component, and the aforementioned liquid petroleum may be stored in the storage cavity of the pre-treatment component. When the liquid petroleum in the aforementioned storage cavity reaches a preset value, the aforementioned liquid petroleum may be discharged into the aforementioned high-standard buried oil pipe through the drainage pipe of the storage cavity.

[0037] Preferably, the pretreatment component may include a high-efficiency coalescing separator, which may include a coalescing filter element and a separation filter element. The coalescing filter element may be responsible for filtering out solid impurities and coalescing extremely small water droplets into larger water droplets. The separation filter element further separates water and can more effectively separate oil and water due to its good lipophilic and hydrophobic properties.

[0038] By setting the aforementioned pre-treatment component, misty oil and gas can be prevented from entering the subsequent separation component, thereby improving the oil and gas recovery rate.

[0039] In some embodiments, the drainage pipe may be provided with a drainage valve, and the drainage valve may be provided with a mechanical device such as a float or an inverted bucket to control the opening and closing of the valve. When the liquid petroleum accumulates to a certain extent, the float rises or the inverted bucket is filled, triggering the valve to open and discharge the liquid petroleum.

[0040] By setting the aforementioned drain valve, the liquid petroleum in the system can be discharged in time, thereby avoiding equipment damage or dangerous situations.

[0041] In some embodiments, the aforementioned device may further include a separation component 20, the aforementioned separation component 20 may include a separation membrane group, and the output end of the aforementioned pretreatment component 10 may be connected to the input end of the aforementioned separation component. The aforementioned first gas may be input into the aforementioned separation component 20. It is understood that the aforementioned first gas may include gaseous petroleum and air.

[0042] In some embodiments, the separation membrane group may include a first shell, the first shell may be set in a cylindrical shape, and a center tube may be set in the middle of the first shell. It is understandable that the axis of the first shell may coincide with the axis of the center tube. A first cavity may be formed between the center tube and the first shell, and the interior of the first cavity may be filled with a membrane core. It is understandable that the membrane core may be a polymer material, and the polymer material has excellent selectivity and sensitivity, and can accurately separate hydrocarbon components in the oil and gas mixture. Driven by a certain pressure, the oil and gas mixture can pass through the polymer membrane, while the air is blocked and discharged. When the oil and gas mixture passes through the polymer membrane, the hydrocarbon components in the oil and gas can quickly penetrate through, while the air components are blocked and discharged.

[0043] In some embodiments, the separation membrane group may further include an air inlet and an air outlet connected to the first cavity. The first gas may enter the first cavity from the air inlet, and in the first cavity, the first gas flows along the membrane core. In this process, the oil in the first gas can pass through the membrane core and flow into the central tube, and the air in the first gas cannot pass through the membrane core and can be discharged from the air outlet.

[0044] In some embodiments, the output end of the central tube may be connected to the recovery component 30. It is understood that the recovery component 30 may include a vacuum pump, which may be connected to the recovery component 30 to provide a negative pressure environment for the central tube. It is understood that the first cavity may be at normal pressure, in which case a pressure difference may be generated between the first cavity and the central tube, thereby improving the efficiency of the oil permeation membrane core.

[0045] In some embodiments, the separation membrane group can be arranged parallel to the ground or perpendicular to the ground, and the separation membrane group can also be arranged obliquely. It is understood that the arrangement of the separation membrane group can be determined according to the size of the surrounding space.

[0046] In some embodiments, the vacuum pump can also transport the second gas separated from the central tube, specifically, the second gas can include gaseous petroleum, and further, the gaseous petroleum can be transported to a low-grade buried oil tank through a return gas pipeline.

[0047] Through the above configuration, oil and gas recovery can be performed at room temperature, which can improve the efficiency of oil and gas recovery. In addition, the disclosed solution does not require the addition of additional substances (such as adsorbents, absorbents or condensers, etc.), which can reduce space utilization and reduce costs.

[0048] In some embodiments, the pretreatment component 10 includes a filtering part and a separating part; wherein the filtering part is used to filter impurities in the oil and gas to obtain a first oil and gas, wherein the first oil and gas includes gaseous gasoline, gaseous air and mist gasoline; the separating part is used to liquefy the mist gasoline to obtain a first gas and a first liquid, wherein the first gas includes gaseous gasoline and gaseous air.

[0049] In some embodiments, the separation portion includes a containing chamber, the first liquid is located in the containing chamber, and when the first liquid reaches a preset value, the oil and gas tank recovers the first liquid.

[0050] In some embodiments, the aforementioned pretreatment component may include a filtering section and a separating section. Specifically, the aforementioned filtering section may include a filter, an oil filter or a cyclone separator, etc., which can filter and remove impurities in the aforementioned oil and gas. Through the aforementioned filtering arrangement, the first oil and gas can be obtained. It can be understood that the aforementioned first oil and gas can include gaseous petroleum, gaseous air and misty petroleum droplets. The aforementioned separating section may include a condensing tube or a condenser, etc., which can liquefy the aforementioned misty gasoline, so as to obtain the first liquid. It can be understood that the aforementioned first liquid can include liquid petroleum. By settling the aforementioned misty gasoline into liquid petroleum, the aforementioned gaseous petroleum and gaseous air can be separated from the aforementioned liquid petroleum, which can prevent the misty oil and gas from entering the membrane component to reduce the recovery rate.

[0051] In some embodiments, a first regulating system may be provided to liquefy the aforementioned gasoline in a mist state and finally obtain a first liquid. Specifically, the aforementioned first regulating system may include a temperature regulating system and a flow rate regulating system. The temperature of the separation portion may be regulated by the temperature regulating system, which may accelerate the coalescence and sedimentation of the gasoline in a mist state. Furthermore, the flow rate of the gasoline in a mist state may be regulated, thereby ensuring that the gasoline in a mist state has sufficient contact time with the petroleum. In addition, the use of special materials for coalescence elements (e.g., oleophobic and hydrophilic materials with micro-nano rough structures on the surface) may also increase the efficiency of the aforementioned gas-liquid separation.

[0052] In some embodiments, the aforementioned pretreatment component may include a high-efficiency coalescing separator, and the aforementioned high-efficiency coalescing separator may include a coalescing filter element and a separation filter element. The aforementioned coalescing filter element may be a filter part, which may be responsible for filtering out solid impurities and coalescing extremely small water droplets into larger water droplets. The separation filter element may be a separation part, which further separates water, and due to its good oleophilic and hydrophobic properties, it can more effectively separate oil and water. After the aforementioned first oil and gas passes through the aforementioned high-efficiency coalescing separator, gaseous oil, gaseous air and liquid oil can be obtained. It can be understood that the aforementioned liquid oil can be stored in the storage cavity of the high-efficiency coalescing separator. When the liquid oil in the aforementioned storage cavity reaches a preset value, the aforementioned liquid oil can be discharged into the aforementioned high-standard buried oil pipe through the drainage pipe of the storage cavity.

[0053] By setting the aforementioned pretreatment component, the aforementioned gaseous petroleum and gaseous air can be separated from the aforementioned liquid petroleum while reducing impurities, and misty oil and gas can be prevented from entering the membrane component to reduce the recovery rate.

[0054] Figure 2 The schematic diagram of the structure of the separation membrane group of some embodiments of the present disclosure is shown. In one embodiment, the separation component 20 includes one or more separation membrane groups.

[0055] In some embodiments, the separation membrane group may include a separation body 21, and the separation body 21 may be set in a cylindrical shape. End caps 22 may be provided at both ends of the separation body 21, and the separation body 21 and the end caps 22 may form a first cavity 211. A sealing component (not shown in the figure) may be provided in the area where the end cap 22 contacts the separation body 21, which can be used to prevent gas leakage inside the separation body 21, thereby reducing the efficiency of oil and gas recovery.

[0056] In some embodiments, the separation membrane group may further include a central tube 23. It is understood that the axis of the central tube 23 may coincide with the axis of the separation body 21 or may not coincide with the axis of the separation body 21. A membrane core 24 may be wound around the outside of the central tube 23. It is understood that the membrane core 24 may include a polymer material. Under normal pressure, oil and gas can permeate through the polymer material, while air cannot permeate through the polymer material. In some embodiments, the central tube 23 may be provided as one or more. When there are multiple central tubes 23, the central tubes 23 may be arranged in an array in the separation body 21. It is understood that one end of the central tube 23 may be against the end cap, and the other end of the central tube 23 may serve as the gas outlet end of the central tube, and the separated second gas may flow from the gas outlet end of the central tube to the recovery component.

[0057] In some embodiments, the separation membrane group may further include an air inlet pipe 25 and an air outlet pipe 26. The air inlet pipe 25 and the air outlet pipe 26 may be located near the end cap 22. It is understood that the air inlet pipe 25 and the air outlet pipe 26 may be located near the two sides of the same end cap, or may be located near two different end caps. It is understood that when the air inlet pipe 25 and the air outlet pipe 26 are located near different end caps, the air inlet pipe 25 may be located near the upper end cap, and the air outlet pipe 26 may be located near the lower end cap; the air inlet pipe 25 may be located near the lower end cap, and the air outlet pipe 26 may be located near the upper end cap.

[0058] The aforementioned air inlet pipe 25 can be close to the lower end cover, and the aforementioned air outlet pipe 26 can be close to the upper end cover. When the aforementioned first gas flows into the cavity from the aforementioned air inlet pipe 25, the aforementioned first gas will move from bottom to top along the cavity. When the first gas moves upward and contacts the membrane core 24, the petroleum gas in the first gas can penetrate the membrane core 24 and move toward the central tube 23, and finally can penetrate into the central tube 23. After the aforementioned petroleum gas penetrates into the central tube 23, it can continue to move upward along the central tube 23, and finally can flow out through the gas outlet end of the central tube. It can be understood that the aforementioned gaseous petroleum flowing out from the gas outlet end of the central tube can be the second gas. It can be understood that after the first gas moves upward and contacts the membrane core 24, the air cannot penetrate the membrane core 24, and therefore cannot penetrate into the central tube. The aforementioned air can continue to move upward along the cavity, and finally can flow out from the gas outlet pipe 26. It can be understood that the gaseous petroleum flowing out from the gas outlet end of the central tube can be the second gas. It can be understood that after the first gas moves upward and contacts the membrane core 24, the air cannot penetrate the membrane core 24, and therefore cannot penetrate into the central tube. The aforementioned air can continue to move upward along the cavity, and finally can flow out from the gas outlet pipe 26. It can be understood that the gaseous petroleum flowing out from the aforementioned gas outlet pipe 26 can be the third gas.

[0059] In some embodiments, when there are multiple separation membrane groups, the multiple separation membrane groups can be connected in series or in parallel. Figure 3a and Figure 3b The series connection and parallel connection of a plurality of separation membrane groups are described in detail.

[0060] Figure 3a The schematic diagram of the structure of multiple separation membrane groups in series in some embodiments of the present disclosure is shown. Figure 3a As shown, the multiple separation membrane groups are connected in series to improve the recovery rate of oil.

[0061] In some embodiments, the separation membrane group may include a first separation membrane group 261, a second separation membrane group 262, and a third separation membrane group 263. The first separation membrane group 261 may include a first separation air inlet pipe 2611, a first separation air outlet pipe 2612, and a first central pipe 2613. The second separation membrane group 262 may include a second separation air inlet pipe 2621, a second separation air outlet pipe 2622, and a second central pipe 2623. The third separation membrane group 263 may include a third separation air inlet pipe 2631, a third separation air outlet pipe 2632, and a third central pipe 2633. Specifically, the first separation air outlet pipe 2612 may be connected to the second separation air inlet pipe 2621, and the second separation air outlet pipe 2622 may be connected to the third separation air inlet pipe 2631, so that the first separation membrane group 261, the second separation membrane group 262, and the third separation membrane group 263 may be connected in series.

[0062] In some embodiments, after the first gas flows in from the first separation inlet pipe 2611, it can be separated by the first separation membrane group 261, and the second gas can flow out from the first central pipe 2613. The gas of the first gas that does not flow into the first central pipe 2613 can flow out from the first separation outlet pipe 2612 and flow into the second separation inlet pipe 2621, so that it can be filtered by the second separation membrane group 262. The second gas flowing out of the second central pipe 2623 can also be collected in the oil tank. The gas flowing out of the second separation outlet pipe 2622 can flow into the third separation inlet pipe 2631 again, and be separated by the third separation membrane group 263, so that the gaseous oil and the gaseous air can be further separated.

[0063] It can be understood that by connecting the aforementioned separation membrane groups in series, the contact area and contact time between the mixed oil and gas and the membrane core can be increased, and the gaseous oil and gaseous air in the mixed oil and gas can be separated multiple times, thereby increasing the oil recovery rate.

[0064] Figure 3b The schematic diagram of the structure of multiple separation membrane groups in parallel in some embodiments of the present disclosure is shown. Figure 3bAs shown, in some embodiments, the plurality of separation membrane groups may also be connected in parallel. Specifically, the separation membrane group may include a fourth separation membrane group 271, a fifth separation membrane group 272, and a sixth separation membrane group 273. The fourth separation membrane group 271 may include a fourth separation air inlet pipe 2711, a fourth separation air outlet pipe 2712, and a fourth central pipe 2713. The fifth separation membrane group 272 may include a fifth separation air inlet pipe 2721, a fifth separation air outlet pipe 2722, and a fifth central pipe 2723. The sixth separation membrane group 273 may include a sixth separation air inlet pipe 2731, a sixth separation air outlet pipe 2732, and a sixth central pipe 2733. Specifically, the fourth separation air inlet pipe 2711 may be connected to the fifth separation air inlet pipe 2721 and the sixth separation air inlet pipe 2731, and the fourth separation air outlet pipe 2712 may be connected to the fifth separation air outlet pipe 2722 and the sixth separation air outlet pipe 2732. It is understandable that the fourth central pipe 2713, the fifth central pipe 2723 and the sixth central pipe 2733 can also be connected together. Through the above arrangement, the fourth separation membrane group 271, the fifth separation membrane group 272 and the sixth separation membrane group 273 can be connected in parallel.

[0065] In some embodiments, after the first gas enters the separation membrane group, the first gas may flow into the fourth separation inlet pipe 2711, the fifth separation inlet pipe 2721 or the sixth separation inlet pipe 2731, and after being separated by the corresponding separation membrane group, the second gas may flow out from the corresponding fourth central pipe 2713, the fifth central pipe 2723 or the sixth central pipe 2733. The third gas may flow out from the corresponding fourth separation outlet pipe 2712, the fifth separation outlet pipe 2722 or the sixth separation outlet pipe 2732.

[0066] By designing multiple separation membrane groups in parallel, the first gas can be separated at the same time. When the amount of the first gas is fixed, the time for separating the first gas can be reduced, thereby improving the efficiency of oil and gas recovery.

[0067] It is important to understand that the above Figure 3a and Figure 3b The membrane core of the separation membrane group can be a polymer material that allows oil and gas to permeate but not air to permeate. The connection method of the above separation membrane group can also be set based on the above polymer material. The above separation membrane group can be the first membrane group.

[0068] In some embodiments, a second separation membrane group can also be used. Specifically, the second membrane core of the second separation membrane group can also be set to a second polymer material that allows air to permeate but does not allow oil and gas to permeate. At this time, the first oil and gas flow into the input end of the second separation membrane group and after separation, the second gas containing gaseous petroleum can flow out from the output end of the second separation membrane group and can flow into the buried oil tank. The third gas containing gaseous air can be output from the output end of the central tube of the second separation membrane group, so that it can be discharged into the air. In this case, the aforementioned multiple second separation membrane groups can be connected in series or in parallel. When two second separation membrane groups are connected in series, the input end of a second separation membrane group can be connected to the pretreatment component, and its output end can be connected to the input end of another second separation membrane group, and then the output end of another second separation membrane group can be connected to the oil tank through the recovery component. The output ends of the central tubes of the first two second separation membrane groups can be connected together and discharged into the air.

[0069] Figure 4 A schematic diagram of an atmospheric pressure membrane separation oil and gas recovery and processing system according to some embodiments of the present disclosure is shown. Figure 4 As shown, in some embodiments, the recovery component 30 includes a vacuum pump, one end of which is connected to the second oil and gas tank, and the other end of which is connected to the separation component 20, for providing negative pressure to the separation component 20 to recover the third gas. In some embodiments, the system further includes a connecting component 418, which is connected to the first oil and gas tank and the second oil and gas tank, for balancing the pressure of the oil and gas tanks.

[0070] In some embodiments, the oil tank may include a low-grade buried oil pipe 401 and a high-grade buried oil pipe 402. The pretreatment component may include a high-efficiency coalescing separator 403, one end of a high-grade air intake pipe 404 may be located above the liquid oil in the high-grade buried oil pipe 402, and the other end of the high-grade air intake pipe 404 may be connected to the high-efficiency coalescing separator 403, and the high-grade air intake pipe 404 may be provided with a pressure sensor 405 for detecting the pressure in the high-grade buried oil pipe 402. The other end of the high-efficiency coalescing separator 403 may be connected to one end of a drain pipe 406, and the other end of the drain pipe 406 may extend to the bottom of the liquid oil in the high-grade buried oil pipe 402, so that the condensed liquid oil in the high-efficiency coalescing separator 403 may be transported to the high-grade buried oil pipe 402. The drain pipe 406 may also be provided with a drain valve 4061 to control the on-off of the drain pipe 406.

[0071] In some embodiments, the separation component may include a plurality of atmospheric separation membrane groups 407 connected in series. The atmospheric separation membrane group 407 may include an atmospheric inlet end 408, an atmospheric outlet end 409 and an atmospheric central tube output end 410.

[0072] The gas outlet of the high-efficiency coalescing separator 403 can be connected to the normal pressure gas inlet 408, and the normal pressure gas outlet 409 can be connected to the discharge pipe 411, wherein, specifically, the discharge pipe 411 can be provided with a solenoid valve 412, an exhaust pump 413, a concentration sensor 414 and a flame arrester 415. The solenoid valve 412 can control the on-off of the discharge pipe 411, and the exhaust pump 413 can extract the air in the discharge pipe 411, which can reduce the pressure, so that the third gas can be transported from one place to another through the pressure difference. The concentration sensor 414 can detect the concentration of the third gas in the discharge pipe 411, so as to avoid the situation of excessive concentration. The flame arrester 415 can play the role of isolating smoke and preventing fire, so as to prevent smoke and flames from spreading through the pipeline, and then prevent smoke or flames from flowing into the oil tank, which may cause an explosion.

[0073] In some embodiments, the aforementioned normal pressure central tube output end 410 can be connected to one end of a vacuum pump 416 in the recovery component, and the other end of the aforementioned vacuum pump 416 can be connected to a low-grade buried oil pipe through a return gas pipe 417. It can be understood that the aforementioned vacuum pump 416 can provide a low-pressure environment, which can generate a pressure difference between the central tube and the mold core of the normal pressure separation membrane group 407, thereby increasing the separation efficiency of the normal pressure separation membrane group 407. In addition, the aforementioned vacuum pump 416 can transport the second gas output from the normal pressure central tube output end 410 to the low-grade buried oil tank through the return gas pipe 417.

[0074] In some embodiments, a connecting component 418 may be provided between the aforementioned high-grade buried oil tank and the low-grade buried oil tank to balance the pressure difference between the aforementioned high-grade buried oil tank and the low-grade buried oil tank.

[0075] In some embodiments, the aforementioned system may also include an explosion-proof control box 419 and a human-computer interaction console 420, wherein the aforementioned explosion-proof control box 419 may be provided with a control and monitoring system, which may operate and monitor the equipment in the oil and gas recovery system, including leak detection, pressure control, overheat protection, etc., to ensure the safe operation of the system under normal and abnormal conditions. The aforementioned system may also include a PLC control module and a data acquisition device, and the PLC control module may include a remote control module, which may control the start and stop of the vacuum pump and the exhaust pump, and the switch of the solenoid valve. The data acquisition device may collect data from pressure, temperature, and concentration sensors. The aforementioned PLC module and data acquisition device may be connected to the human-computer interaction console 420 for communication.

[0076] In some embodiments, a human-machine interaction interface can be provided on the aforementioned human-machine interaction console 420, which can realize real-time display of data, data storage and data analysis, and form statistical reports. The console is equipped with an emergency stop button, sound and light alarm, etc., to monitor the operation of the oil and gas recovery and processing system in real time, and realize the unattended function of the oil and gas recovery and processing device. In addition, the oil and gas recovery and processing device is also equipped with a wireless remote module, which can realize the remote control function of the on-site equipment through remote operation, and can realize remote parameter modification, fault diagnosis and partial fault repair, program upgrade and other advanced remote maintenance functions.

[0077] Figure 5 A flow chart of a method 500 for an atmospheric pressure membrane separation oil and gas recovery processing system according to some embodiments of the present disclosure is shown. Figure 5 As shown, the system includes a first oil and gas tank and a second oil and gas tank, the mixed oil and gas recovery system includes a pretreatment component connected to the first oil and gas tank, a separation component connected to the pretreatment component and a recovery component connected to the separation component, and the method includes: S510 using the pretreatment component to pretreat the oil and gas to obtain a first gas; S520 using the separation component to separate the first gas to obtain a second gas and a third gas; S530 using the recovery component to recover the third gas to achieve recovery of petroleum in the mixed oil and gas.

[0078] In some embodiments, pre-treating the oil and gas to obtain the first gas may include filtering and separating the aforementioned oil and gas. The aforementioned oil and gas may include impurities, gaseous air, gaseous petroleum, and petroleum in a mist droplet state. After filtering the aforementioned oil and gas, the aforementioned impurities can be filtered out. In some embodiments, separating the aforementioned first gas may include condensing the aforementioned petroleum in a mist droplet state, so that the petroleum in a mist droplet state can be converted into liquid petroleum, thereby achieving gas-liquid separation. In some embodiments, the aforementioned pre-treatment component may include a high-efficiency coalescing separator, and the aforementioned high-efficiency coalescing separator may include a coalescing filter element and a separation filter element. The aforementioned coalescing filter element may be responsible for filtering out solid impurities and coalescing extremely small water droplets into larger water droplets. The separation filter element further separates water. Due to its good lipophilic and hydrophobic properties, it can more effectively separate oil and water. By filtering and separating the aforementioned oil and gas, the first gas can be obtained.

[0079] In some embodiments, the aforementioned separation of the first gas to obtain the second gas and the third gas may include using a separation membrane group to separate the gaseous petroleum and gaseous air in the first gas. It is understandable that the membrane core in the aforementioned separation membrane group may be a polymer material that allows gaseous petroleum to permeate but does not allow air to permeate. After the aforementioned first gas flows through the aforementioned membrane core, it can be separated into gaseous petroleum and gaseous air, thereby obtaining the second gas and the third gas. In some embodiments, the recovery of the third gas may include using a vacuum pump to generate suction formed by a pressure difference at the output end of the aforementioned separation membrane group, so that the aforementioned second gas can be sucked into an oil tank to achieve the recovery of oil in the mixed oil and gas.

[0080] Figure 6 An exemplary block diagram of an electronic device 600 for an atmospheric pressure membrane separation oil and gas recovery processing system according to some embodiments of the present disclosure is shown. Figure 6 As shown, the electronic device 600 may include a processor 610 and a memory 620, wherein the processor 610 and the memory 620 communicate with each other via a bus. The memory 620 stores computer instructions for simulating oil recovery of mixed oil and gas. When the aforementioned computer instructions are executed by the processor 610, the electronic device 600 implements the method steps described in the above text in conjunction with the accompanying drawings: pre-processing the oil and gas using a pre-processing component to obtain a first gas; separating the first gas using a separation component to obtain a second gas and a third gas; and recovering the third gas using a recovery component to recover oil from the mixed oil and gas.

[0081] According to the above description in combination with the accompanying drawings, those skilled in the art can also understand that the embodiments of the present application can also be implemented by software programs. Therefore, the present application also provides a computer-readable storage medium. The computer-readable storage medium stores computer-readable instructions for oil recovery of mixed oil and gas. When the computer-readable instructions are executed by one or more processors, the present application is implemented in combination with Figure 5 The described simulation method for an atmospheric pressure membrane separation oil and gas recovery processing system.

[0082] The computer-readable storage medium may be any suitable magnetic storage medium or magneto-optical storage medium, such as RRAM (Resistive Random Access Memory), DRAM (Dynamic Random Access Memory), SRAM (Static Random-Access Memory), EDRAM (Enhanced Dynamic Random Access Memory), HBM (High-Bandwidth Memory), HMC (Hybrid Memory Cube), etc., or any other medium that can be used to store the required information and can be accessed by the application, module, or both. Any such computer storage medium may be part of the device or accessible or connectable to the device. Any application or module described in the present invention may be implemented using computer-readable / executable instructions that may be stored or otherwise maintained by such a computer-readable medium.

[0083] It should also be understood that any module, unit, component, server, computer, terminal or device that executes instructions of the present invention examples may include or otherwise access computer-readable media, such as storage media, computer storage media or data storage devices (removable) and / or non-removable) such as disks, optical disks or tapes. Computer storage media may include volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, program modules or other data.

[0084] In summary, through the solution of the embodiments disclosed herein, oil and gas recovery is performed under normal pressure, which can reduce the cost of oil and gas recovery while improving the efficiency of oil and gas recovery.

[0085] Although multiple embodiments of the present disclosure have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art may think of many changes, modifications, and alternatives without departing from the thought and spirit of the present disclosure. It should be understood that in the process of practicing the present disclosure, various alternatives to the embodiments of the present disclosure described herein may be adopted. The attached claims are intended to define the scope of protection of the present disclosure, and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. An atmospheric pressure membrane separation oil and gas recovery and processing system, the system comprising a first oil and gas tank and a second oil and gas tank, characterized in that: The system further comprises: A pre-treatment component (10), connected to the first oil and gas tank, for pre-treating the oil and gas to obtain a first gas; a separation component (20), connected to the pre-treatment component, for separating the first gas to obtain a second gas and a third gas, wherein the second gas comprises gaseous petroleum and the third gas comprises air; A recovery component (30) is connected to the separation component and is used to recover the third gas to achieve recovery of petroleum in the oil gas.

2. The system according to claim 1, characterized in that The pretreatment component (10) comprises a filtering part and a separating part; wherein, The filter unit is used to filter impurities in the oil and gas to obtain the first oil and gas, wherein the first oil and gas includes gaseous gasoline, gaseous air and mist gasoline; The separation unit is used to liquefy the gasoline in a mist state to obtain a first gas and a first liquid, wherein the first gas includes gaseous gasoline and gaseous air.

3. The system according to claim 2, characterized in that The separation part includes a containing chamber, the first liquid is located in the containing chamber, and when the first liquid reaches a preset value, the oil and gas tank recovers the first liquid.

4. The system according to claim 1, characterized in that The separation component (20) includes one or more separation membrane groups.

5. The system according to claim 4, characterized in that The plurality of separation membrane groups are connected in series to improve the efficiency of recovering oil.

6. The system according to claim 1, characterized in that The recovery component (30) comprises a vacuum pump, one end of which is connected to the second oil and gas tank, and the other end of which is connected to the separation component (20), for providing negative pressure to the separation component (20) to recover the third gas.

7. The system according to claim 6, characterized in that The system further comprises a connecting component (418), wherein the connecting component (418) is connected to the first oil and gas tank and the second oil and gas tank to balance the pressure of the oil and gas tanks.

8. A method for an atmospheric pressure membrane separation oil and gas recovery and processing system, the system comprising a first oil and gas tank and a second oil and gas tank, characterized in that: The atmospheric pressure membrane separation oil and gas recovery and processing system further comprises a pretreatment component connected to the first oil and gas tank, a separation component connected to the pretreatment component, and a recovery component connected to the separation component, and the method comprises: Pre-treating the oil and gas using a pre-treating component to obtain a first gas; Using a separation component to separate the first gas to obtain a second gas and a third gas; The third gas is recovered by using a recovery component to recover petroleum in the oil gas.

9. An electronic device, characterized in that: include: processor; and a memory storing program instructions for a method of an atmospheric pressure membrane separation oil and gas recovery processing system, wherein when the program instructions are executed by the processor, the electronic device executes the method according to claim 8.

10. A computer-readable storage medium, characterized in that: It stores program instructions for an atmospheric pressure membrane separation oil and gas recovery and processing system method. When the program instructions are executed by a processor, the method according to claim 8 is implemented.

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