Oil gas recovery device and recovery method

Abstract

The invention discloses an oil gas recovery device and a recovery method thereof, and relates to the technical field of oil gas recovery, the oil gas recovery device comprises a condenser, an activated carbon adsorption tank, an absorption tower and a spraying assembly, a first gas outlet pipeline is arranged between the condenser and the activated carbon adsorption tank, and the upper end of the activated carbon adsorption tank communicates with a first exhaust pipe; the bottom of the absorption tower is communicated with a second air inlet pipeline communicated with the first exhaust pipe, a temporary storage tank is arranged beside the absorption tower, an oil guide pipe is arranged between the temporary storage pipe and the bottom of the absorption tower, and the temporary storage tank is further communicated with an oil return pipe; an oil stopping needle is inserted into each oil guide hole in a sliding mode, the circumferential wall of the oil return pipe is coaxially sleeved with a mounting frame in a sliding mode, the end, away from the disc, of each oil stopping needle is connected to the mounting frame, and a driving piece is arranged on the inner circumferential wall of the absorption tower. The method has the effects of improving the recycling rate of resources and reducing pollution to the environment.

Description

Technical Field

[0001] The present application relates to the technical field of oil and gas recovery, and in particular to an oil and gas recovery device and a recovery method thereof. Background Art

[0002] Against the backdrop of global climate change, green and low-carbon development has become a common goal pursued by all countries. Oil and gas recovery technology, as an effective environmental protection means, can significantly reduce carbon emissions and promote green and low-carbon development. Through oil and gas recovery, enterprises can not only reduce their own carbon emissions, but also contribute to the green and low-carbon development of the entire society.

[0003] The existing oil and gas recovery equipment mainly includes a condenser, an activated carbon adsorption tank and an absorption tower. The oil and gas are first passed through a condenser to condense the lighter hydrocarbon vapor in the oil and gas into liquid, while the heavier oil and gas enter the activated carbon adsorption tank. The activated carbon in the activated carbon adsorption tank can adsorb organic matter such as benzene in the oil and gas. The gas adsorbed by the activated carbon can be discharged into the air, while the oil and gas adsorbed on the activated carbon needs to be desorbed, and then the desorbed oil and gas are sent to the absorption tower for recovery.

[0004] The absorption tower mainly includes a tower body. A spray assembly is arranged in the upper space inside the tower body. The oil and gas desorbed from the activated carbon enter the tower from the bottom of the tower body. The spray assembly sprays the solvent (oil) from the upper part of the tower body. The solvent comes into contact with the oil and gas, and the solvent can absorb the organic matter in the oil and gas.

[0005] However, in the prior art, it is difficult for the solvent sprayed by the spray assembly in the absorption tower to cover all areas in the absorption tower, while the oil and gas entering the tower from the bottom of the absorption tower fills the entire internal space of the absorption tower. Therefore, some of the oil and gas are not fully contacted and dissolved with the solvent, and are discharged from the outlet at the top of the tower, resulting in waste of resources and environmental pollution. Summary of the invention

[0006] The purpose of the present application is to provide an oil and gas recovery device and a recovery method thereof, which can make the solvent sprayed by the spray assembly in the absorption tower cover the entire internal space of the absorption tower as much as possible, so that the organic matter in the oil and gas in the absorption tower can be fully dissolved in the solvent, thereby improving the recycling rate of resources and reducing pollution to the environment.

[0007] In the first aspect, the oil and gas recovery device provided in the present application adopts the following technical solution: By adopting the above technical solution, the condenser is connected to a first air inlet pipe on the side wall, the top of the condenser is connected to a first air outlet pipe, and the bottom of the condenser is provided with a first oil outlet pipe, and the end of the first oil outlet pipe away from the condensed gas is connected to an external oil storage tank; An activated carbon adsorption tank, the bottom of which is connected to an end of the first gas outlet pipe away from the condenser, and the upper end of the activated carbon adsorption tank is connected to a first exhaust pipe; An absorption tower, with a second exhaust pipe at the top, a second air intake pipe connected to the bottom of the absorption tower, the second air intake pipe connected to the first exhaust pipe, a valve provided on the second air intake pipe, a temporary storage tank provided beside the absorption tower, an oil guide pipe provided between the temporary storage pipe and the bottom of the absorption tower, an oil return pipe also connected to the temporary storage tank, a pump provided on the oil return pipe, an end of the oil return pipe away from the temporary storage tank extends into the interior of the absorption tower and is located at a high position of the absorption tower, a second oil outlet pipeline also connected to the temporary storage pipe, an end of the second oil outlet pipeline away from the temporary storage tank is connected to an external oil storage tank; The greaseproof device of claim 1, wherein the greaseproof device is constructed so that the greaseproof device can be easily installed in the oil drain plug, and the greaseproof device can be easily installed in the oil drain plug.

[0008] By adopting the above technical solution, the driving component includes a mounting plate, which is fixedly mounted on the inner wall of the absorption tower. A driving motor is arranged on the mounting plate, and the output shaft of the driving motor is coaxially fixedly connected with a cam. A cross plate is arranged on the mounting frame, and the cross plate is in sliding contact with the cam.

[0009] By adopting the above technical scheme, an upwardly opening gas storage bin is provided at the bottom of the absorption tower, a connecting column is connected to the side wall of the gas storage bin, an end of the connecting column away from the gas storage bin is fixedly connected to the inner wall of the absorption tower, an air storage bag is provided in the gas storage bin, a plurality of air outlet holes are provided on the top of the air storage bag, the second air inlet pipe extends into the interior of the air storage bag, the amount of gas entering the air storage bag per unit time is greater than the amount of gas going out of the air storage bag per unit time, therefore, the pressure in the air bag increases, and the gas ejected from the air outlet has a certain momentum, which can break up the liquid droplets in the absorption tower into more small droplets, thereby increasing the contact area between the oil gas and the solvent.

[0010] By adopting the above technical solution, the mounting frame is provided with an extrusion rod, and the disc is provided with a through groove for the extrusion rod to pass through. The end of the extrusion rod away from the mounting frame abuts against the air storage bag. As the mounting frame moves up and down, the extrusion rod reciprocates and squeezes the air storage bag, and the pressure in the air storage bag is further increased. The gas ejected from the air outlet has a stronger momentum, and the degree of collision between the gas ejected from the air outlet and the droplets is increased, making the gas more easily soluble in the solvent.

[0011] By adopting the above technical solution, a plurality of flow grooves are opened on the outer peripheral wall of the disc, the plurality of flow grooves all penetrate the disc, and the plurality of flow grooves are evenly spaced around the axis of the disc.

[0012] By adopting the above technical solution, a cooling component is provided on the oil return pipe, and the cooling component can reduce the temperature of the solvent in the oil return pipe to facilitate the formation of droplets in the oil guide hole.

[0013] By adopting the above technical solution, the cooling component includes a return pipe, and the return pipe is the middle section of the oil return pipe.

[0014] By adopting the above technical solution, a detection component is provided at the second exhaust pipe, and the detection component can detect the quality of the exhausted gas.

[0015] By adopting the above technical solution, a filter screen is provided at the connection point between the absorption tower and the oil guide pipe.

[0016] In a second aspect, the present application provides an oil and gas recovery method, based on the above-mentioned oil and gas recovery device, comprising the following steps: S1: Start the condenser, open the first air inlet pipe, the liquid in the condenser enters the oil storage tank through the first oil outlet pipe, and the gas condensed by the condenser enters the activated carbon adsorption tank through the first air outlet pipe; S2: The gas after passing through the activated carbon adsorption tank is discharged into the atmosphere; S3: Open the valve on the second air inlet pipe, close the second exhaust pipe on the activated carbon adsorption tank, start the spray assembly, use the cleaning device to desorb the oil and gas adsorbed on the activated carbon, and the desorbed oil and gas enter the absorption tower through the second air inlet pipe; S4: The spray assembly produces droplets relatively evenly in the absorption tower. The droplets increase the contact area with the oil and gas. The oil and gas sprayed from the bottom of the absorption tower have a certain momentum, which collides with the droplets and fully merges. The droplets absorb organic matter in the oil and gas better. S5: The liquid that absorbs oil and gas enters the temporary storage tank, part of the liquid in the temporary storage pipe flows back to the oil outlet tank, and the other part of the liquid flows back to the spray assembly; S6: Follow the above steps to cycle.

[0017] In summary, the present application includes at least one of the following beneficial technical effects: 1. The spray assembly in the present application can continuously produce multiple solvent droplets, and the disc is provided with multiple evenly distributed oil guide holes, so that the produced solvent droplets can cover the entire internal space of the absorption tower as much as possible, so that the solvent sprayed by the spray assembly can fully contact the oil and gas in all areas of the absorption tower as much as possible, and then the organic matter in the oil and gas in the absorption tower is fully dissolved in the solvent, which improves the resource recovery rate and reduces the pollution to the environment; in addition, compared with the setting of the sprinkler head in the traditional spray assembly, the droplets produced by the disc in the present application have a larger coverage area. At the same time, the solvent sprayed by the sprinkler head in the traditional spray assembly is in the form of a water column, while the solvent in the present application is in the form of a droplet, and its contact area with the oil and gas in the absorption tower is larger, so that the solvent can better absorb and dissolve the organic matter in the oil and gas in the absorption tower, further improving the resource recovery rate and reducing the pollution to the environment; 2. The arrangement of the air storage bag and the extrusion rod in the present application enables the oil and gas sprayed from the air outlet on the air storage bag to have a certain momentum. Therefore, the oil and gas sprayed from the air outlet will collide with the solvent droplets in the absorption tower to a certain extent. On the one hand, heat will be generated in the process of the collision between the oil and gas and the solvent droplets. The heat dissipation will cause the temperature in the absorption tower to rise, thereby accelerating the dissolution of organic matter in the oil and gas in the droplet-shaped solvent, thereby further improving the recycling rate of resources; on the other hand, after colliding with the oil and gas, the solvent droplets will disperse into more and smaller droplets, which can occupy more space in the absorption tower, and the total area of ​​the dispersed small droplets will increase, thereby further increasing the contact area between the solvent droplets and the oil and gas in the absorption tower, thereby further accelerating the dissolution of organic matter in the oil and gas in the droplet-shaped solvent; at the same time, after the oil and gas collide with the droplets, the falling speed of the droplets and the rising speed of the oil and gas will both decrease, thereby increasing the contact time between the solvent droplets in the absorption tower and the oil and gas will also increase, thereby further improving the effect of dissolving the organic matter in the oil and gas in the droplet-shaped solvent; 3. In the process of making droplets in the present application, the drive motor drives the mounting frame and the oil stop needle to move up and down to make droplets, and the oil and gas have a certain momentum, which is also achieved by the drive motor driving the extrusion rod to squeeze the air storage bag. The structural drive in the present application is achieved by a drive source, which reduces energy consumption as a whole; 4. Since the oil and gas in the absorption tower will generate heat when colliding with the solvent droplets, the solvent at the bottom of the absorption tower and the solvent in the temporary storage tank have a certain temperature. High-temperature solvent is not easy to form droplets. Therefore, by setting up a cooling component, the temperature of the solvent entering the spray component can be reduced to facilitate the formation of droplets. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 It is a schematic diagram of the structure of the absorption tower in Example 1 of the present application; Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A; Figure 4 yes Figure 3 A partial enlarged schematic diagram of part B; Figure 5 yes Figure 4 A partial enlarged schematic diagram of part C in the middle; Figure 6 is a schematic diagram of the structure of the spray assembly in Example 1 of the present application; In the figure, 1, condenser; 11, first air inlet pipe; 12, first air outlet pipe; 13, first oil outlet pipe; 2, activated carbon adsorption tank; 21, first exhaust pipe; 3, absorption tower; 31, second exhaust pipe; 32, second air inlet pipe; 33, electric valve; 34, oil guide pipe; 4, temporary storage tank; 41, oil return pipe; 42, pump; 43, second oil outlet pipe; 5, spray assembly; 51, disc; 511 , oil guide hole; 512, flow groove; 513, through groove; 52, oil stop needle; 53, mounting frame; 531, extrusion rod; 532, sleeve; 533, connecting rod; 54, driving member; 541, mounting plate; 542, driving motor; 543, cam; 544, cross plate; 6, air storage bin; 61, air storage bag; 611, air outlet; 62, connecting column; 7, cooling component; 8, detection component; 9, filter. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-6 , further details of this application are given. Example 1

[0020] An oil vapor recovery device, referring to Figure 1 and Figure 2 , including a condenser 1, an activated carbon adsorption tank 2, an absorption tower 3 and a spray assembly 5.

[0021] The condenser 1 in this embodiment is configured as a columnar shape as a whole, a first air inlet pipe 11 is fixedly connected to the peripheral wall of the condenser 1, a first air outlet pipe 12 is fixedly connected to the top of the condenser 1, a first oil outlet pipe 13 is fixedly connected to the bottom of the condenser 1, and the end of the first oil outlet pipe 13 away from the condensed gas is connected to an external oil storage tank (not shown in the figure), and valves are provided on the first air inlet pipe 11, the first air outlet pipe 12 and the first oil outlet pipe 13. The valves in this embodiment are all configured as electric valves 33, which are all electrically connected to the control center.

[0022] The bottom of the activated carbon adsorption tank 2 is connected to the end of the first air outlet pipe 12 away from the condenser 1, and the upper end of the activated carbon adsorption tank 2 is fixedly connected to the first exhaust pipe 21. In this embodiment, an electric valve 33 is also provided on the first exhaust pipe 21, and is electrically connected to the control center. At the same time, a detection component 8 is also provided on the first exhaust pipe 21 in this embodiment. The detection component 8 in this embodiment is used to detect whether various indicators in the exhausted gas meet the standards. When the data detected by the detection component 8 meet the standards, the electric valve 33 on the first exhaust pipe 21 can be continuously in an open state; otherwise, the electric valve 33 on the first exhaust pipe 21 is in a closed state.

[0023] A second exhaust pipe 31 is disposed at the top of the absorption tower 3 . Similarly, the second exhaust pipe 31 is provided with an electric valve 33 and a detection assembly 8 which are the same as those described above.

[0024] The bottom of the absorption tower 3 is connected to a second air intake pipe 32, which is connected to the first exhaust pipe 21. An electric valve 33 is provided on the second air intake pipe 32. When the electric valve 33 on the first exhaust pipe 21 is in an open state, the electric valve 33 on the second air intake pipe 32 is in a closed state. Conversely, when the electric valve 33 on the first exhaust pipe 21 is in a closed state, the electric valve 33 on the second air intake pipe 32 is in an open state.

[0025] A temporary storage tank 4 is arranged beside the absorption tower 3, an oil guide pipe 34 is arranged between the temporary storage pipe and the bottom of the absorption tower 3, the upper end of the temporary storage tank 4 is also connected with an oil return pipe 41, a pump 42 is arranged on the oil return pipe 41, the end of the oil return pipe 41 away from the temporary storage tank 4 extends into the absorption tower 3, and is located at a high position of the absorption tower 3, the temporary storage pipe is also connected with a second oil outlet pipeline 43, the end of the second oil outlet pipeline 43 away from the temporary storage tank 4 is connected to an external oil storage tank (not shown in the figure), the oil guide pipe 34, the oil return pipe 41 and the second oil outlet pipe are also provided with electric valves 33, and these electric valves 33 are all electrically connected to the control center.

[0026] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5 The spray assembly 5 includes a disc 51, a mounting frame 53 and an oil stop needle 52 (combined Figure 6 ).

[0027] The disc 51 is coaxially fixedly connected to the inner wall of the absorption tower 3. A plurality of oil guide holes 511 are evenly opened on the upper end surface of the disc 51. The plurality of oil guide holes 511 are coaxially arranged with the disc 51 and all penetrate the disc 51. One end of the return oil pipe 41 located in the absorption tower 3 is located above the disc 51 and is coaxially arranged with the disc 51.

[0028] The mounting frame 53 in this embodiment is configured in a circular spider web shape. The mounting frame 53 is coaxially slidably sleeved on the outer peripheral wall of the oil return pipe 41 . The mounting frame 53 and the disc 51 are coaxially arranged, and the mounting frame 53 is located above the disc 51 .

[0029] In the present embodiment, a plurality of oil stop needles 52 are provided, and the plurality of oil stop needles 52 are fixedly mounted on the lower end surface of the mounting frame 53, and the plurality of oil stop needles 52 correspond one by one to the plurality of oil guide holes 511, and the oil stop needle 52 is coaxially slidably inserted into the oil guide hole 511, the upper end portion of the oil guide hole 511 is arranged in a cylindrical shape, and the lower end portion of the oil guide hole 511 is arranged in a columnar shape, the aperture of the upper end portion of the oil guide hole 511 is larger than the aperture of the lower end portion, the diameter of the oil stop needle 52 is smaller than the aperture of the upper end portion of the oil guide hole 511, and the diameter of the oil stop needle 52 is larger than the aperture of the lower end portion of the oil guide hole 511, and a driving member 54 for driving the mounting frame 53 to move in a direction close to or away from the disc 51 is provided on the inner peripheral wall of the absorption tower 3.

[0030] When the absorption tower 3 is required to dissolve and absorb the oil and gas entering the absorption tower 3 from the second air inlet pipe 32, the electric valve 33 on the oil guide pipe 34 and the oil return pipe 41 is opened first, the valve on the second oil outlet pipe 43 is temporarily closed, the pump 42 and the driving member 54 are started, and then the electric valve 33 on the second air inlet pipe 32 is opened, the pump 42 draws the solvent in the temporary storage pipe into the absorption tower 3 through the oil return pipe 41, and the solvent coming out of the oil outlet pipe falls on the upper surface of the disc 51, and then the solvent on the disc 51 is discharged through the guide pipe 34 and the oil return pipe 41. The gap between the oil hole 511 and the oil stop needle 52 flows into the oil guide hole 511. The initial state of the oil stop needle 52 is that it is inserted into the deepest position in the oil guide hole 511, that is, the end of the oil stop needle 52 away from the mounting frame 53 abuts against the hole wall with a smaller diameter at the lower end of the oil guide hole 511. At this time, the oil stop needle 52 blocks the oil guide hole 511, and the solvent cannot flow out from the lower end of the oil guide hole 511. Then the driving member 54 can drive the mounting frame 53 to move in the direction close to or away from the disc 51, that is, drive the mounting frame 53 to reciprocate in the up and down directions. When the mounting bracket 53 moves in the direction away from the disc 51, the mounting bracket 53 drives the oil stop needle 52 to move in the upward direction. At this time, the lower end of the oil stop needle 52 does not abut against the hole wall of the lower end portion of the oil guide hole 511. Since the aperture of the oil stop needle 52 is smaller than the aperture of the upper end portion of the oil guide hole 511, the oil stop needle 52 does not block the oil guide hole 511 at this time, and part of the solvent flows to the lower end portion of the oil guide hole 511. At this time, the mounting bracket 53 and the oil stop needle 52 are driven downward by the driving member 54, and the oil stop needle 52 is The oil guide hole 511 is blocked for the second time, and the solvent that has flowed into the lower end of the oil guide hole 511 is disconnected from the solvent at the upper end of the oil guide hole 511, and the solvent at the lower end of the oil guide hole 511 flows out from the lower end of the oil guide hole 511, so that the solvent flowing out of the lower end of the oil guide hole 511 forms droplets, and then falls vertically to the bottom of the absorption tower 3. Therefore, under the reciprocating movement of the mounting frame 53 and the oil stop needle 52 driven by the driving member 54, droplets will continuously flow out from the lower end of the oil guide hole 511, thereby continuously generating solvent droplets.

[0031] The solvent sprayed by the sprinkler head in the traditional spray assembly 5 is in the form of a continuous water column, while the solvent in the present application is in the form of droplets. Since the droplets are generally circular or elliptical, the contact area between them and the oil and gas in the absorption tower 3 is larger, so that the solvent can better absorb and dissolve the organic matter in the oil and gas in the absorption tower 3, thereby improving the resource recovery rate and reducing pollution to the environment; in addition, there are multiple oil guide holes 511 in this embodiment, and the multiple oil guide holes 511 are evenly distributed on the disc 51, so that the produced solvent droplets can cover the internal space of the entire absorption tower 3 as much as possible, so that the solvent dropped on the disc 51 can be in full contact with the oil and gas in all areas of the absorption tower 3 as much as possible, and then the organic matter in the oil and gas in the absorption tower 3 is fully dissolved in the solvent, further improving the resource recovery rate and reducing pollution to the environment.

[0032] In order to avoid excessive gas pressure in the absorption tower 3, a plurality of flow grooves 512 are provided on the outer peripheral wall of the disk 51 in the present embodiment. There are eight flow grooves 512 in the present embodiment. The eight flow grooves 512 all penetrate the disk 51 in the vertical direction, and the eight flow grooves 512 are evenly spaced around the axis of the disk 51. When the solvent on the upper end surface of the disk 51 is too full, the excess solvent will flow from the flow grooves 512 to the bottom of the absorption tower 3, and the oil and gas dissolved in the droplet-shaped solvent will also rise from the flow grooves 512 to the second exhaust pipe 31, and along the The second exhaust pipe 31 discharges into the atmosphere. At the same time, the oil and gas passing through the flow groove 512 and the oil guide hole 511 will come into contact with the solvent again, thereby further dissolving the organic matter in the oil and gas, thereby further improving the solvent's dissolving effect on the organic matter in the oil and gas, improving resource utilization and reducing environmental pollution; in addition, the solvent flowing down the flow groove 512 can also flush the solvent on the inner wall of the absorption tower 3, so as to avoid the situation where the solvent adsorbed on the inner wall of the absorption tower 3 cannot be recycled, further improving resource utilization.

[0033] The driving member 54 includes a mounting plate 541 (combined with Figure 6 ).

[0034] The mounting plate 541 is arranged in the horizontal direction and fixedly installed on the inner circumferential wall of the absorption tower 3. A driving motor 542 is arranged on the upper end face of the mounting plate 541. The output shaft of the driving motor 542 is coaxially fixedly connected with a cam 543. A sleeve 532 is coaxially fixedly connected to the mounting frame 53. The sleeve 532 is slidably sleeved on the outer circumferential wall of the return oil pipe 41. A transverse plate 544 is fixedly arranged on the outer circumferential wall of the sleeve 532. The transverse plate 544 is arranged in the horizontal direction, and the lower end face of the transverse plate 544 is in sliding contact with the cam 543. When the driving motor 542 rotates, the cam 543 drives the transverse plate 544 to move back and forth up and down, thereby driving the multiple oil stop needles 52 to move back and forth up and down through the sleeve 532 and the mounting frame 53.

[0035] Among them, an upwardly opened gas storage bin 6 is provided at the bottom of the absorption tower 3. The gas storage bin 6 in this embodiment is cylindrical, and the gas storage bin 6 is coaxially arranged with the disc 51. A plurality of connecting columns 62 are fixedly connected to the side wall of the gas storage bin 6. In this embodiment, four connecting columns 62 are provided, and the four connecting columns 62 are evenly spaced around the axis of the gas storage bin 6. One end of the connecting column 62 away from the gas storage bin 6 is fixedly connected to the inner wall of the absorption tower 3. An air storage bag 61 is provided in the gas storage bin 6. A plurality of air outlet holes 611 are evenly provided on the upper end surface of the air storage bag 61. A breathable membrane (not shown in the figure) is provided at the air outlet hole 611 in this embodiment. The breathable membrane only allows gas to pass through, but not liquid. Therefore, the solvent is prevented from entering the air storage bag 61 from the air outlet hole 611 as much as possible, and the second air inlet pipe 32 extends into the interior of the air storage bag 61.

[0036] It should be noted that, in this embodiment, the amount of gas entering the air storage bag 61 per unit time is greater than the amount of gas leaving the air storage bag 61 per unit time. Therefore, the pressure in the air bag increases, and the gas ejected from the air outlet 611 has a certain momentum. Therefore, the oil gas ejected from the air outlet 611 will collide with the solvent droplets in the absorption tower 3 to a certain extent. On the one hand, heat will be generated during the collision between the oil gas and the solvent droplets. The dissipation of heat will cause the temperature in the absorption tower 3 to rise, thereby accelerating the dissolution of organic matter in the oil gas in the droplet-shaped solvent, thereby further improving the recovery of resources. Utilization rate; on the other hand, after colliding with the oil and gas, the solvent droplets will be dispersed into more and smaller droplets, which can occupy more space in the absorption tower 3, and the total area of ​​the dispersed small droplets will increase, thereby further increasing the contact area between the solvent droplets and the oil and gas in the absorption tower 3, and further accelerating the dissolution of organic matter in the oil and gas in the droplet-shaped solvent; at the same time, after the oil and gas collide with the droplets, the descending speed of the droplets and the rising speed of the oil and gas will both decrease, so that the contact time between the solvent droplets and the oil and gas in the absorption tower 3 will also increase, thereby further improving the effect of dissolving the organic matter in the oil and gas in the droplet-shaped solvent.

[0037] In order to further increase the momentum of the oil gas ejected from the gas outlet 611 , a squeezing rod 531 is provided on the mounting frame 53 .

[0038] In this embodiment, a through groove 513 for the extrusion rod 531 to pass through is opened at the center of the disk 51, the mounting frame 53 and the extrusion rod 531 are arranged coaxially, and two connecting rods 533 are arranged between the extrusion rod 531 and the mounting frame 53. The upper end surface of the extrusion rod 531 will not contact the return oil pipe 41. Therefore, the extrusion rod 531 will not block the return oil pipe 41. The end of the extrusion rod 531 away from the mounting frame 53 abuts against the air storage bag 61.

[0039] When the driving motor 542 drives the installation to move up and down through the cam 543, the cross plate 544 and the sleeve 532, the mounting frame 53 will also drive the squeezing rod 531 to move reciprocatingly up and down through the connecting rod 533. Therefore, the squeezing rod 531 will reciprocate and squeeze the air storage bag 61. Under the squeezing of the squeezing rod 531, the pressure in the air storage bag 61 is further increased, and the gas ejected from the air outlet 611 has a stronger momentum. The degree of collision between the oil and gas ejected from the air outlet 611 and the droplet solvent is increased. Therefore, the temperature generated by the oil and gas and the droplet solvent is higher, making the organic matter in the oil and gas easier to dissolve in the solvent, thereby further improving the utilization rate of resources and reducing pollution to the environment.

[0040] In addition, in the process of manufacturing droplets in the present embodiment, the droplets are manufactured by driving the motor 542 to drive the mounting frame 53 and the oil stop needle 52 to move up and down, and the oil and gas have a stronger momentum, which is also achieved by driving the motor 542 to drive the extrusion rod 531 to move up and down, thereby squeezing the air storage bag 61. The structural drive in the present embodiment is realized by a driving source, which reduces the energy consumption as a whole.

[0041] Secondly, in order to improve the droplet forming rate, a cooling component 7 is provided on the oil return pipe 41 in this embodiment. The cooling component 7 in this embodiment is configured as a roundabout pipe, which is a middle section of the oil return pipe 41 (combined with Figure 1 ).

[0042] Since the oil and gas in the absorption tower 3 will generate heat during the collision with the solvent droplets, the solvent at the bottom of the absorption tower 3 and the solvent in the temporary storage tank 4 both have a certain temperature, and the high-temperature solvent is not easy to form droplets. Therefore, through the setting of the return pipe, the contact area between the return oil pipe 41 and the air is increased, thereby accelerating the efficiency of heat dissipation of the solvent in the return oil pipe 41, reducing the temperature of the solvent flowing out of the return oil pipe 41, and facilitating the formation of droplets; in addition, the hole walls of the oil guide hole 511 are made of oleophobic materials. The hole walls of the oil guide hole 511 in this embodiment are made of siloxane. The material made of siloxane has strong oleophobicity and hydrophobicity. Therefore, the oily solvent in this embodiment is not easy to adhere to the inner wall of the oil guide hole 511, thereby facilitating the formation and shedding of droplets and accelerating the efficiency of droplet production; at the same time, siloxane is an inorganic substance, and it is not easy to absorb organic matter in oil and gas.

[0043] Finally, a filter screen 9 (combined with Figure 1 ).

[0044] The setting of the filter screen 9 can prevent impurities in the absorption tower 3 from entering the temporary storage tank 4 as much as possible, thereby preventing impurities from flowing into the oil guide hole 511 on the disc 51 through the return oil pipe 41, causing the oil guide hole 511 to be blocked; in addition, through the setting of the filter screen 9, the purity of the solvent flowing out of the return oil pipe 41 can be guaranteed as much as possible, thereby further improving the effect of the solvent on absorbing organic matter in oil and gas, thereby further improving the utilization rate of resources and reducing pollution to the environment; in addition, high-purity solvents can also be relatively better formed into droplets, which improves the practicality of the device to a certain extent. Example 2

[0045] An oil and gas recovery method, based on the above-mentioned oil and gas recovery device, comprises the following steps: S1: Start the condenser 1, open the first air inlet pipe 11, the liquid in the condenser 1 enters the oil storage tank through the first oil outlet pipe 13, and the gas condensed by the condenser 1 enters the activated carbon adsorption tank 2 through the first air outlet pipe 12; S2: The gas after passing through the activated carbon adsorption tank 2 is discharged into the atmosphere; S3: Open the valve on the second air inlet pipe 32, close the second exhaust pipe 31 on the activated carbon adsorption tank 2, start the spray assembly 5, use the cleaning device to desorb the oil and gas adsorbed on the activated carbon, and the desorbed oil and gas enter the absorption tower 3 through the second air inlet pipe 32; S4: The spraying assembly 5 produces droplets relatively evenly in the absorption tower 3. The droplets increase the contact area with the oil and gas. The oil and gas sprayed from the bottom of the absorption tower 3 have a certain momentum, which collides with the droplets. After the oil and gas collide with the solvent droplets, the heat is dissipated, the temperature rises, and the droplets absorb organic matter in the oil and gas better. S5: The liquid that absorbs the oil and gas enters the temporary storage tank 4, a part of the liquid in the temporary storage pipe flows back to the oil outlet tank, and the other part of the liquid flows back to the spray assembly 5; S6: Follow the above steps to cycle.

[0046] By recycling and treating oil and gas through the above method, the organic matter in the oil and gas can be fully dissolved and absorbed, and the content of harmful substances in the gas discharged into the atmosphere can be greatly reduced. Therefore, this method can improve the resource utilization rate of oil and gas and reduce pollution to the environment.

[0047] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An oil and gas recovery device, characterized in that: include: A condenser (1) having a first air inlet pipe (11) connected to a side wall thereof, a first air outlet pipe (12) being connected to the top of the condenser (1), a first oil outlet pipe (13) being arranged at the bottom of the condenser (1), and an end of the first oil outlet pipe (13) away from the condensed air being connected to an external oil storage tank; An activated carbon adsorption tank (2), the bottom of which is connected to an end of the first gas outlet pipe (12) away from the condenser (1), and the upper end of the activated carbon adsorption tank (2) is connected to a first exhaust pipe (21); An absorption tower (3) is provided with a second exhaust pipe (31) at the top, a second air intake pipe (32) is connected to the bottom of the absorption tower (3), the second air intake pipe (32) is connected to the first exhaust pipe (21), a valve is provided on the second air intake pipe (32), a temporary storage tank (4) is provided beside the absorption tower (3), an oil guide pipe (34) is provided between the temporary storage tank (4) and the bottom of the absorption tower (3), an oil return pipe (41) is also connected to the temporary storage tank (4), a pump (42) is provided on the oil return pipe (41), an end of the oil return pipe (41) away from the temporary storage tank (4) extends into the interior of the absorption tower (3) and is located at a high position of the absorption tower (3), a second oil outlet pipe (43) is also connected to the temporary storage tank (4), and an end of the second oil outlet pipe (43) away from the temporary storage tank (4) is connected to an external oil storage tank; The spray assembly (5) comprises a disc (51), the disc (51) being coaxially fixedly connected to the inner peripheral wall of the absorption tower (3), the upper end surface of the disc (51) being evenly provided with a plurality of oil guide holes (511), the plurality of oil guide holes (511) being coaxially arranged with the disc (51) and all penetrating the disc (51), the end of the oil return pipe (41) located in the absorption tower (3) being located above the disc (51), an oil stop needle (52) being slidably inserted into each of the oil guide holes (511), the upper end diameter of the oil guide hole (511) being larger than the lower end diameter, and the diameter of the oil stop needle (52) being smaller than the upper end diameter of the oil guide hole (511). The diameter of the oil stop needle (52) is larger than the lower end diameter of the oil guide hole (511); the oil stop needle (52) and the oil guide hole (511) are coaxially arranged; a mounting frame (53) is coaxially slidably sleeved on the peripheral wall of the oil return pipe (41); one end of each of the oil stop needles (52) away from the disc (51) is connected to the mounting frame (53); a driving member (54) for driving the mounting frame (53) to move in a direction approaching or away from the disc (51) is provided on the inner peripheral wall of the absorption tower (3); as the mounting frame (53) moves up and down, the fluid in the oil guide hole (511) flows out of the oil guide hole (511) in the form of droplets, thereby increasing the contact area between the oil gas and the solvent.

2. The oil and gas recovery device according to claim 1, characterized in that: The driving member (54) comprises a mounting plate (541), the mounting plate (541) being fixedly mounted on the inner peripheral wall of the absorption tower (3), a driving motor (542) being arranged on the mounting plate (541), an output shaft of the driving motor (542) being coaxially fixedly connected to a cam (543), and a transverse plate (544) being arranged on the mounting frame (53), the transverse plate (544) being in sliding contact with the cam (543).

3. The oil and gas recovery device according to claim 2, characterized in that: The bottom of the absorption tower (3) is provided with an upwardly opening gas storage bin (6), the side wall of the gas storage bin (6) is connected with a connecting column (62), one end of the connecting column (62) away from the gas storage bin (6) is fixedly connected to the inner wall of the absorption tower (3), the gas storage bin (6) is provided with a gas storage bag (61), the top of the gas storage bag (61) is provided with a plurality of evenly opened gas outlet holes (611), the second gas inlet pipe (32) extends into the gas storage bag (61), the amount of gas entering the gas storage bag (61) per unit time is greater than the amount of gas leaving the gas storage bag (61) per unit time, therefore, the pressure in the gas bag increases, the gas ejected from the gas outlet holes (611) has a certain momentum, which can break up the liquid droplets in the absorption tower (3) into more small liquid droplets, thereby increasing the contact area between the oil gas and the solvent.

4. The oil and gas recovery device according to claim 3, characterized in that: The mounting frame (53) is provided with an extrusion rod (531), and the disc (51) is provided with a through groove (513) for the extrusion rod (531) to pass through. One end of the extrusion rod (531) away from the mounting frame (53) abuts against the gas storage bag (61). As the mounting frame (53) moves up and down, the extrusion rod (531) reciprocates and squeezes the gas storage bag (61), and the pressure in the gas storage bag (61) is further increased. The gas ejected from the gas outlet (611) has a stronger momentum, and the degree of collision between the gas ejected from the gas outlet (611) and the liquid droplets is increased, so that the gas is more easily dissolved in the solvent.

5. The oil and gas recovery device according to claim 1, characterized in that: A plurality of flow grooves (512) are provided on the outer peripheral wall of the disk (51), the plurality of flow grooves (512) all penetrate the disk (51), and the plurality of flow grooves (512) are evenly spaced around the axis of the disk (51).

6. The oil vapor recovery device according to claim 1, characterized in that: The oil return pipe (41) is provided with a cooling component (7), and the cooling component (7) is capable of reducing the temperature of the solvent in the oil return pipe (41) to facilitate the formation of droplets in the oil guide hole (511).

7. The oil vapor recovery device according to claim 6, characterized in that: The cooling component (7) comprises a loop-shaped pipe, which is a middle section of the oil return pipe (41).

8. The oil and gas recovery device according to claim 1, characterized in that: The second exhaust pipe (31) is provided with a detection component (8), and the detection component (8) is capable of detecting the quality of the exhausted gas.

9. The oil and gas recovery device according to claim 1, characterized in that: A filter screen (9) is provided at the connection point between the absorption tower (3) and the oil guide pipe (34).

10. An oil and gas recovery method, based on an oil and gas recovery device according to any one of claims 1 to 9, comprising the following steps: S1: starting the condenser (1), opening the first air inlet pipe (11), allowing the liquid in the condenser (1) to enter the oil storage tank through the first oil outlet pipe (13), and the gas condensed by the condenser (1) to enter the activated carbon adsorption tank (2) through the first air outlet pipe (12); S2: The gas after passing through the activated carbon adsorption tank (2) is discharged into the atmosphere; S3: opening the valve on the second air inlet pipe (32), closing the second exhaust pipe (31) on the activated carbon adsorption tank (2), starting the spray assembly (5), and using a cleaning device to desorb the oil and gas adsorbed on the activated carbon. The desorbed oil and gas enter the absorption tower (3) through the second air inlet pipe (32); S4: The spray assembly (5) produces droplets relatively evenly in the absorption tower (3). The droplets increase the contact area with the oil and gas. The oil and gas sprayed from the bottom of the absorption tower (3) have a certain momentum, which collides with the droplets and fully merges. The droplets can better absorb organic matter in the oil and gas. S5: the liquid that absorbs the oil and gas enters the temporary storage tank (4), a part of the liquid in the temporary storage pipe flows back to the oil outlet tank, and the other part of the liquid flows back to the spray assembly (5); S6: Follow the above steps to cycle.

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