Adsorbent regeneration system for oil gas recovery based on synergism of thermal desorption and vacuum desorption

Abstract

This invention relates to the technical field of oil and gas recovery, and discloses an oil and gas recovery adsorbent regeneration system based on the synergy of thermal desorption and vacuum desorption. The system includes an adsorption tank, a vacuum pump, a heating module, an intelligent control unit, and a water removal module. The intelligent control unit is connected to the adsorption tank, the vacuum pump, and the heating module. The adsorption tank contains adsorbent, and a set vacuum degree is applied to the adsorption tank using the vacuum pump. The heating module heats the adsorption tank using steam or hot nitrogen in addition to vacuum desorption. Vacuum desorption reduces the surface pressure of the adsorbent, lowering the boiling point of the adsorbate. Combined with the high-temperature desorption effect of thermal desorption, this significantly enhances desorption efficiency while reducing energy consumption. The intelligent control unit adjusts the synergistic parameters of temperature and vacuum degree in real time. The system integrates adsorption, desorption, and water removal functions, supports continuous cyclic operation, increases the stability of oil and gas recovery rate, and eliminates the need for manual intervention in the regeneration process.

Description

Technical Field

[0001] This invention relates to the technical field of oil and gas recovery, and more specifically, to an oil and gas recovery adsorbent regeneration system based on the synergy of thermal desorption and vacuum desorption. Background Technology

[0002] In existing oil and gas recovery processes, adsorbent regeneration often employs either thermal desorption or vacuum desorption, which has significant drawbacks: thermal desorption requires high-temperature heating, leading to a shortened adsorbent lifespan, high energy consumption, and safety hazards; while vacuum desorption can lower the desorption temperature, it requires maintaining a high vacuum for a long time when used alone, resulting in low system operating efficiency and difficulty in meeting the needs of continuous industrial processes.

[0003] Traditional thermal desorption methods using electric heating are prone to causing localized overheating, while steam heating may lead to adsorbent hydrolysis and degradation. Existing systems lack a synergistic protection mechanism between inert media such as hot nitrogen and a vacuum environment, making it difficult to balance desorption efficiency and material stability. Summary of the Invention

[0004] The purpose of this invention is to provide an oil and gas recovery adsorbent regeneration system based on the synergy of thermal desorption and vacuum desorption, aiming to solve the problem that the existing adsorbent regeneration technology uses a relatively single desorption technique.

[0005] The present invention is implemented as follows: an oil and gas recovery adsorbent regeneration system based on the synergy of thermal desorption and vacuum desorption includes an adsorption tank, a vacuum pump, a heating module, an intelligent control unit, and a water removal module. The intelligent control unit is connected to the adsorption tank, the vacuum pump, and the heating module respectively, and controls the system to dynamically adjust the synergistic effect parameters of temperature and vacuum degree.

[0006] The adsorption tank contains adsorbent. A vacuum pump is used to apply a set vacuum level to the adsorption tank so that the saturated adsorbent can be desorbed under vacuum. The adsorption tank is heated by the heating module. Based on the vacuum desorption, the adsorbent is heated to a set temperature by steam heating or hot nitrogen gas for thermal desorption.

[0007] After the vacuum desorption and thermal desorption are completed, the adsorbent is dehydrated and cooled by the dehydration module. After the dehydration and cooling are completed, the adsorption operation is resumed.

[0008] Furthermore, the heating module includes a nitrogen pipeline for conveying nitrogen and a steam heat exchanger, the steam heat exchanger being installed on the nitrogen pipeline, and the outlet end of the nitrogen pipeline being connected to the inlet end of the adsorption tank.

[0009] Furthermore, the heating module also includes an electric heating unit as a backup or auxiliary heating method.

[0010] Furthermore, the water removal module includes a hot nitrogen water removal unit and a cold nitrogen cooling unit, which are used for water removal and cooling of the adsorbent, respectively.

[0011] Furthermore, the set temperature is 120-180℃, and the set vacuum degree is -90kPa to -98kPa.

[0012] Furthermore, the outlet end of the adsorption tank is connected to a first recovery pipeline and a second recovery pipeline, respectively. A condenser is installed on the first recovery pipeline, and the vacuum pump is installed on the second recovery pipeline.

[0013] Furthermore, the adsorption tank includes a first adsorption tank and a second adsorption tank arranged in parallel.

[0014] Furthermore, the intelligent control unit includes distributed sensors and a collaborative control unit. The distributed sensors are used to monitor parameters such as system temperature, pressure, and gas concentration to ensure safe system operation.

[0015] The collaborative control unit automatically matches the temperature and pressure curves according to the adsorbent type; during the vacuum desorption and thermal desorption processes, the collaborative control unit adjusts the synergistic effect parameters of temperature and vacuum in real time, and dynamically adjusts the parameters based on real-time monitoring data.

[0016] Furthermore, the top of the adsorption tank is provided with a tank cover, the adsorption tank has a longitudinally arranged inner cavity, a longitudinally arranged rotating shaft is installed in the inner cavity, the rotating shaft is rotatably connected to the adsorption tank, a sleeve is sleeved on the rotating shaft, the sleeve is detachably connected to the rotating shaft, and a lifting ring is circumferentially protruding from the top of the sleeve.

[0017] The sleeve is provided with multiple airflow distribution disks, which are arranged sequentially at intervals along the axial direction of the sleeve. Each airflow distribution disk is provided with multiple hollow frames filled with the adsorbent. The hollow frames are slidably engaged with the airflow distribution disks and are interconnected. The multiple hollow frames are arranged sequentially adjacent to each other along the circumference of the sleeve to form a disc-shaped structure. The outer periphery of the disc-shaped structure is fitted with an enclosing strip. There is an adsorption interval between horizontally adjacent hollow frames and a flow guiding interval between vertically adjacent hollow frames.

[0018] Multiple longitudinally arranged fixing strips are welded to the inner wall of the cavity. The multiple fixing strips are arranged at intervals around the circumference of the cavity. The fixing strips are provided with guide slides, and the guide slides are slidably engaged with the fixing strips.

[0019] The guide slide has multiple recessed grooves, which are arranged at intervals along the length of the guide slide. One side of the enclosing strip is embedded in the groove.

[0020] Furthermore, the rotating shaft is connected to the adsorption tank via a bearing, and a track bar protrudes from the outer side of the rotating shaft. The track bar extends along the length of the rotating shaft. The sleeve has a hollow cavity, and the inner wall of the hollow cavity is recessed to form a track groove that matches the shape of the track bar. The sleeve slides with the track bar of the rotating shaft through the track groove.

[0021] The bottom of the rotating shaft extends through the bottom of the adsorption tank to form an outer section outside the adsorption tank. A gear disk is welded on the outer section, and the gear disk meshes with the drive mechanism to drive the rotation of the rotating shaft.

[0022] The notch is provided with rolling beads on the upper and lower sides, and the enclosing strip is recessed on the upper and lower sides to form sliding grooves, and the rolling beads move and abut against the sliding grooves of the enclosing strip.

[0023] Compared with existing technologies ， The oil and gas recovery adsorbent regeneration system provided by this invention, based on the synergy of thermal desorption and vacuum desorption, reduces the surface pressure of the adsorbent through vacuum desorption, thereby lowering the boiling point of the adsorbate. Combined with the high-temperature desorption effect of thermal desorption, it significantly enhances the desorption efficiency while reducing energy consumption. The intelligent control unit adjusts the synergistic parameters of temperature and vacuum in real time, avoiding the problems of adsorbent micropore blockage or high-temperature damage caused by traditional fixed parameters, thus extending the service life of the adsorbent. Integration and automation: The system integrates adsorption, desorption, and water removal functions, supports continuous cyclic operation, increases the stability of oil and gas recovery rate, and does not require manual intervention in the regeneration process, solving the problem of the relatively single desorption technology used in adsorbent regeneration. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structural layout of the oil and gas recovery adsorbent regeneration system based on the synergy of thermal desorption and vacuum desorption provided by the present invention.

[0025] Figure 2 This is a frontal sectional view of the adsorption tank provided by the present invention;

[0026] Figure 3 This is the present invention. Figure 2 A magnified structural diagram of A in the middle;

[0027] Figure 4 This is a top view cross-sectional structural diagram of the adsorption tank provided by the present invention.

[0028] In the diagram: adsorption tank 10, vacuum pump 20, heating module 30, condenser 40, first recovery pipeline 50, second recovery pipeline 60, tank cover 11, inner cavity 12, rotating shaft 13, sleeve 14, fixing strip 15, guide slide 16, drive mechanism 17, track strip 131, outer section 132, lifting ring 141, airflow distribution plate 142, hollow frame 143, enclosure strip 144, notch groove 161, rolling ball 162, nitrogen pipeline 31, steam heat exchanger 32. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0031] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0032] Reference Figure 1-4 The image shows a preferred embodiment of the present invention.

[0033] The oil and gas recovery adsorbent regeneration system based on the synergy of thermal desorption and vacuum desorption includes an adsorption tank 10, a vacuum pump 20, a heating module 30, an intelligent control unit, and a water removal module. The intelligent control unit is connected to the adsorption tank 10, the vacuum pump 20, and the heating module 30, respectively. The intelligent control unit controls the system to dynamically adjust the synergistic parameters of temperature and vacuum.

[0034] The adsorption tank 10 contains adsorbent. A vacuum pump 20 applies a set vacuum to the adsorption tank 10 to allow the saturated adsorbent to undergo vacuum desorption. The adsorption tank 10 is heated by a heating module 30. Based on vacuum desorption, the adsorbent is heated to a set temperature by steam heating or hot nitrogen gas for thermal desorption.

[0035] After vacuum desorption and thermal desorption are completed, the adsorbent is dehydrated and cooled by the dehydration module. After dehydration and cooling are completed, it waits for the adsorption operation to start again.

[0036] The oil and gas recovery adsorbent regeneration system provided above, based on the synergy of thermal desorption and vacuum desorption, reduces the surface pressure of the adsorbent through vacuum desorption, thereby lowering the boiling point of the adsorbate. Combined with the high-temperature desorption effect of thermal desorption, it significantly enhances the desorption efficiency while reducing energy consumption. The intelligent control unit adjusts the synergistic parameters of temperature and vacuum in real time, avoiding the problems of adsorbent micropore blockage or high-temperature damage caused by traditional fixed parameters, thus extending the service life of the adsorbent. Integration and automation: The system integrates adsorption, desorption, and water removal functions, supports continuous cyclic operation, increases the stability of oil and gas recovery rate, and does not require manual intervention in the regeneration process, solving the problem of the relatively single desorption technology used in adsorbent regeneration.

[0037] The adsorbent is activated carbon, resin, or metal-organic framework (MOF) material;

[0038] The order of vacuum desorption and thermal desorption can be reversed, performed simultaneously, or used separately, increasing the versatility of adsorbent regeneration and desorption technology.

[0039] Technological Innovation:

[0040] A "thermal desorption-vacuum desorption synergistic regeneration" process is proposed to achieve deep regeneration of the adsorbent in two stages:

[0041] Phase 1 (Vacuum Desorption): Vacuum pump 20 is used to apply a vacuum of -90 kPa to -98 kPa to the adsorption tank, causing more than 80% of the adsorbed hydrocarbons to desorb.

[0042] Phase 2 (thermal desorption): Based on vacuum desorption, the adsorbent is heated to 120-180℃ by steam heating or hot nitrogen to completely remove residual hydrocarbons (residual rate <1%).

[0043] Phase 3 (Dehydration and Cooling): After vacuum desorption and thermal desorption, the adsorbent is dehydrated and cooled using hot nitrogen (air) and cold nitrogen (air), respectively. After dehydration and cooling, the adsorbent awaits the next adsorption operation.

[0044] Improved regeneration efficiency: The combined process enables the adsorbent to regenerate at a rate of over 98% (compared to 85% for vacuum desorption alone);

[0045] Safety: Avoids the risks of open flame processes, and requires a small safety distance.

[0046] Example 1: Regeneration of activated carbon adsorbent

[0047] Operating parameters:

[0048] Vacuum desorption pressure: -95 kPa, duration: 20 mins;

[0049] Thermal desorption temperature: 150℃ (steam heating), duration 30 mins.

[0050] Effect verification:

[0051] Adsorption capacity recovery rate after regeneration: 99%;

[0052] After three months of continuous operation, the average NMHC emission concentration was 100 mg / m³. 3 (GC-MS detection).

[0053] In this embodiment, the heating module 30 includes a nitrogen pipeline 31 for conveying nitrogen and a steam heat exchanger 32. The steam heat exchanger 32 is installed on the nitrogen pipeline 31, and the outlet end of the nitrogen pipeline 31 is connected to the inlet end of the adsorption tank 10.

[0054] Uniform heating: The steam heat exchanger 32 transfers heat evenly to the adsorbent through nitrogen carrier, avoiding local overheating (traditional electric heating is prone to hot spots), and the temperature fluctuation range is controlled within ±5℃;

[0055] Safety and explosion protection: Nitrogen, as an inert medium, can reduce the concentration of oil and gas in the system and eliminate the risk of explosion, making it especially suitable for high-concentration oil and gas environments.

[0056] In this embodiment, the heating module 30 also includes an electric heating unit as a backup or auxiliary heating method.

[0057] Redundancy protection: In the event of a steam or nitrogen supply failure, the electric heating unit can start quickly to ensure uninterrupted system operation and improve reliability;

[0058] Flexible control: Auxiliary heating can supplement desorption in local saturated areas of the adsorbent, solving the "dead zone" problem of traditional systems.

[0059] In this embodiment, the water removal module includes a hot nitrogen water removal unit and a cold nitrogen cooling unit, which are used for water removal and cooling of the adsorbent, respectively.

[0060] High-efficiency water removal: Hot nitrogen removes moisture from the surface of the adsorbent, preventing residual water film from affecting subsequent adsorption performance; Rapid cooling: Cold nitrogen lowers the temperature of the adsorbent to a suitable adsorption range, shortening the system cycle; Integrated process: Water removal and cooling share the same nitrogen medium, simplifying the system structure and reducing equipment costs.

[0061] In this embodiment, the temperature is set to 120-180℃ and the vacuum degree is set to -90kPa to -98kPa.

[0062] The temperature range of 120-180℃ balances desorption rate (>90%) with energy efficiency; the vacuum level of -90kPa to -98kPa ensures that hydrocarbons are fully volatilized while avoiding excessive equipment load caused by excessive vacuum.

[0063] In this embodiment, the outlet end of the adsorption tank 10 is connected to a first recovery pipeline 50 and a second recovery pipeline 60, respectively. A condenser 40 is installed on the first recovery pipeline 50; and a vacuum pump 20 is installed on the second recovery pipeline 60.

[0064] The first pipeline recovers high-boiling-point components (such as heavy hydrocarbons) through the condenser 40, and the second pipeline recovers light components through the vacuum pump 20, realizing the classification and treatment of oil and gas components and improving the resource utilization rate; the separate design prevents condensate from entering the vacuum pump 20 and extends the pump body life.

[0065] In this embodiment, the adsorption tank 10 includes a first adsorption tank and a second adsorption tank arranged in parallel.

[0066] While one tank is adsorbing, the other tank is regenerating, enabling 24-hour uninterrupted operation and increasing production capacity by 50%; fault tolerance: the system can still operate at reduced load when a single tank fails, and maintenance does not affect overall production.

[0067] In this embodiment, the intelligent control unit includes distributed sensors and a collaborative control unit. The distributed sensors are used to monitor parameters such as temperature, pressure and gas concentration of the system to ensure the safe operation of the system.

[0068] The co-control unit automatically matches the temperature and pressure curves according to the type of adsorbent; during vacuum desorption and thermal desorption, the co-control unit adjusts the synergistic effect parameters of temperature and vacuum in real time, and dynamically adjusts the parameters based on real-time monitoring data.

[0069] Precise control: Automatically matches the optimal temperature-vacuum curve according to the type of adsorbent (such as activated carbon, molecular sieve) to improve desorption adaptability.

[0070] Real-time optimization: Sensor monitoring data dynamically adjusts parameters to cope with fluctuations in operating conditions such as adsorbent aging and changes in oil and gas composition.

[0071] Safety protection: Real-time monitoring of parameters such as gas concentration and pressure, triggering alarms or shutdown mechanisms to ensure system safety.

[0072] In this embodiment, the top of the adsorption tank 10 is provided with a tank cover 11, the adsorption tank 10 has a longitudinally arranged inner cavity 12, a longitudinally arranged rotating shaft 13 is installed in the inner cavity 12, the rotating shaft 13 is rotatably connected to the adsorption tank 10, a sleeve 14 is sleeved on the rotating shaft 13, the sleeve 14 is detachably connected to the rotating shaft 13, and a lifting ring 141 is circumferentially protruding from the top of the sleeve 14.

[0073] The sleeve 14 is provided with multiple airflow distribution disks 142, which are arranged sequentially at intervals along the axial direction of the sleeve 14. Multiple hollow frames 143 filled with adsorbent are provided on the airflow distribution disks 142. The hollow frames 143 are slidably engaged with the airflow distribution disks 142 and are interconnected. The multiple hollow frames 143 are arranged sequentially adjacent to each other along the circumference of the sleeve 14 to form a disc-shaped structure. A surrounding strip 144 is fitted around the outer periphery of the disc-shaped structure. There are adsorption intervals between horizontally adjacent hollow frames 143 and flow guiding intervals between vertically adjacent hollow frames 143.

[0074] Multiple longitudinally arranged fixing strips 15 are welded on the inner wall of the inner cavity 12. The multiple fixing strips 15 are arranged at intervals around the circumference of the inner cavity 12. The fixing strips 15 are provided with guide slides 16, and the guide slides 16 slide in cooperation with the fixing strips 15.

[0075] The guide slide 16 has multiple recessed grooves 161, which are arranged at intervals along the length of the guide slide 16. One side of the enclosing strip 144 is embedded in the groove 161.

[0076] Uniform airflow distribution: The rotating shaft 13 drives the airflow distribution disk 142 to rotate, so that the gas flows uniformly in the adsorbent layer and eliminates the "dead zone"; the multi-layer hollow frame 143 forms a honeycomb flow channel, and the airflow distribution uniformity index is ≥0.95, avoiding the failure of local adsorbent caused by the "channeling effect".

[0077] Modular filling: The lifting ring 141 is designed to support rapid lifting by crane, and the time for a single adsorbent replacement is ≤2 hours (8 hours for traditional structures); the hollow frame 143 and the enclosure strip 144 slide together, which facilitates rapid filling, replacement and maintenance of the adsorbent.

[0078] Structural stability: The enclosing strip 144 is embedded in the notch 161 to form a mechanical interlock, which improves the vibration and displacement resistance and is suitable for high vibration scenarios such as offshore platforms; the fixing strip 15 and the guide slide 16 restrict the displacement of the hollow frame 143 to prevent the structure from becoming loose or the absorbent from leaking during rotation.

[0079] In this embodiment, the rotating shaft 13 is connected to the adsorption tank 10 by a bearing. The outer side of the rotating shaft 13 is provided with a track bar 131, which extends along the length of the rotating shaft 13. The sleeve 14 has a hollow cavity, and the inner sidewall of the hollow cavity is recessed to form a track groove that matches the shape of the track bar 131. The sleeve 14 slides with the track bar 131 of the rotating shaft 13 through the track groove.

[0080] The bottom of the rotating shaft 13 extends through the bottom of the adsorption tank 10 to form an outer section 132 outside the adsorption tank 10. A gear disk is welded on the outer section 132. The gear disk meshes with the drive mechanism 17 to realize the rotation drive of the rotating shaft 13.

[0081] Rolling balls 162 are provided on the upper and lower sides of the notch groove 161, and sliding grooves are formed on the upper and lower sides of the enclosure strip 144. The rolling balls 162 move and abut against the sliding grooves of the enclosure strip 144.

[0082] The bearing and track bar 131 structure: The bearing connection reduces rotational friction resistance, and the track groove and track bar 131 cooperate to achieve precise transmission and extend the equipment life.

[0083] Smooth transmission: The external drive mechanism 17 controls the speed through a gear disk to adapt to the desorption requirements of different working conditions; the gear drive provides stable torque to ensure that the airflow distribution disk 142 rotates at a uniform speed, reducing vibration and noise.

[0084] Low-resistance operation: The rolling ball 162 cooperates with the slide groove to reduce sliding friction and extend the service life of the rotating mechanism; quick maintenance: The sleeve 14 and the rotating shaft 13 are detachably connected, which facilitates disassembly, cleaning or replacement of damaged parts; the synergistic design of the system comprehensively improves the adsorbent regeneration efficiency while reducing energy consumption and maintenance costs.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An oil and gas recovery adsorbent regeneration system based on the synergistic effect of thermal desorption and vacuum desorption, characterized in that, It includes an adsorption tank, a vacuum pump, a heating module, an intelligent control unit, and a dehydration module. The intelligent control unit is connected to the adsorption tank, the vacuum pump, and the heating module, and controls the system to dynamically adjust the synergistic parameters of temperature and vacuum. The adsorption tank contains adsorbent. A vacuum pump is used to apply a set vacuum level to the adsorption tank so that the saturated adsorbent can be desorbed under vacuum. The adsorption tank is heated by the heating module. Based on the vacuum desorption, the adsorbent is heated to a set temperature by steam heating or hot nitrogen gas for thermal desorption. After the vacuum desorption and thermal desorption are completed, the adsorbent is dehydrated and cooled by the dehydration module. After the dehydration and cooling are completed, the adsorption operation is waited for the next operation. The set temperature is 120-180℃, and the set vacuum degree is -90kPa to -98kPa vacuum degree; The intelligent control unit includes distributed sensors and a collaborative control unit. The distributed sensors are used to monitor the system's temperature, pressure, and gas concentration parameters to ensure the system's safe operation. The co-control unit automatically matches the temperature and pressure curves according to the adsorbent type; during the vacuum desorption and thermal desorption processes, the co-control unit adjusts the synergistic effect parameters of temperature and vacuum in real time, and dynamically adjusts the parameters based on real-time monitoring data; The top of the adsorption tank is provided with a tank cover. The adsorption tank has a longitudinally arranged inner cavity. A longitudinally arranged rotating shaft is installed in the inner cavity. The rotating shaft is rotatably connected to the adsorption tank. A sleeve is fitted on the rotating shaft. The sleeve is detachably connected to the rotating shaft. A lifting ring is circumferentially protruding from the top of the sleeve. The sleeve is provided with multiple airflow distribution disks, which are arranged sequentially at intervals along the axial direction of the sleeve. Each airflow distribution disk is provided with multiple hollow frames filled with the adsorbent. The hollow frames are slidably engaged with the airflow distribution disks and are interconnected. The multiple hollow frames are arranged sequentially adjacent to each other along the circumference of the sleeve to form a disc-shaped structure. The outer periphery of the disc-shaped structure is fitted with an enclosing strip. There is an adsorption interval between horizontally adjacent hollow frames and a flow guiding interval between vertically adjacent hollow frames. Multiple longitudinally arranged fixing strips are welded to the inner wall of the cavity. The multiple fixing strips are arranged at intervals around the circumference of the cavity. The fixing strips are provided with guide slides, and the guide slides are slidably engaged with the fixing strips. The guide slide has multiple recessed grooves, which are arranged at intervals along the length of the guide slide. One side of the enclosing strip is embedded in the groove.

2. The oil and gas recovery adsorbent regeneration system based on the synergistic combination of thermal desorption and vacuum desorption as described in claim 1, characterized in that, The heating module includes a nitrogen pipeline for conveying nitrogen and a steam heat exchanger. The steam heat exchanger is installed on the nitrogen pipeline, and the outlet end of the nitrogen pipeline is connected to the inlet end of the adsorption tank.

3. The oil and gas recovery adsorbent regeneration system based on the synergistic effect of thermal desorption and vacuum desorption as described in claim 2, characterized in that, The heating module also includes an electric heating unit as a backup or auxiliary heating method.

4. The oil and gas recovery adsorbent regeneration system based on the synergistic effect of thermal desorption and vacuum desorption as described in claim 1, characterized in that, The water removal module includes a hot nitrogen water removal unit and a cold nitrogen cooling unit, which are used for water removal and cooling of the adsorbent, respectively.

5. The oil and gas recovery adsorbent regeneration system based on the synergistic effect of thermal desorption and vacuum desorption as described in claim 1, characterized in that, The adsorption tank is connected to a first recovery pipeline and a second recovery pipeline at its outlet. A condenser is installed on the first recovery pipeline, and a vacuum pump is installed on the second recovery pipeline.

6. The oil and gas recovery adsorbent regeneration system based on the synergistic combination of thermal desorption and vacuum desorption as described in any one of claims 1 to 5, characterized in that, The adsorption tank includes a first adsorption tank and a second adsorption tank arranged in parallel.

7. The oil and gas recovery adsorbent regeneration system based on the synergistic combination of thermal desorption and vacuum desorption as described in any one of claims 1 to 5, characterized in that, The rotating shaft is connected to the adsorption tank by a bearing. A track bar protrudes from the outer side of the rotating shaft and extends along the length of the rotating shaft. The sleeve has a hollow cavity, and the inner sidewall of the hollow cavity is recessed to form a track groove that matches the shape of the track bar. The sleeve slides with the track bar of the rotating shaft through the track groove. The bottom of the rotating shaft extends through the bottom of the adsorption tank to form an outer section outside the adsorption tank. A gear disk is welded on the outer section, and the gear disk meshes with the drive mechanism to drive the rotation of the rotating shaft. The notch is provided with rolling beads on the upper and lower sides, and the enclosing strip is recessed on the upper and lower sides to form sliding grooves, and the rolling beads move and abut against the sliding grooves of the enclosing strip.

Images