CN215782595U - Hollow fiber tubular membrane oil gas treatment system with washing absorption tower - Google Patents

Abstract

The utility model relates to a hollow fiber tubular membrane oil-gas treatment system with a washing absorption tower, which comprises a double-barrel hollow fiber tubular membrane adsorption device, an oil-gas conveying pipeline, an exhaust conveying pipeline and a washing absorption tower, wherein oil gas is conveyed from the other end of the oil-gas conveying pipeline to the double-barrel hollow fiber tubular membrane adsorption device for oil-gas adsorption, the efficiency of the oil gas can reach 97 percent or even more than 99 percent when the oil gas is adsorbed to form purified gas, after a period of operation switching time, the adsorbed oil gas is subjected to vacuum pressure swing desorption to form concentrated oil gas, and the concentrated oil gas is conveyed into the washing absorption tower through a desorption discharge pipeline for concentrated oil gas absorption, so that the oil gas has the effect of oil-gas reabsorption treatment.

Description

Hollow fiber tubular membrane oil gas treatment system with washing absorption tower

Technical Field

The utility model relates to a hollow fiber tubular membrane oil gas treatment system with a washing absorption tower, in particular to a hollow fiber tubular membrane oil gas treatment system which has the efficiency of 97 percent or even more than 99 percent when oil gas becomes purified gas after being absorbed, has the effects of concentrating the oil gas and absorbing the oil gas again, and is suitable for gas stations, underground oil storage tanks or similar areas.

Background

At present, a gas station can volatilize oil gas in the process of refueling a gasoline engine, an oil gas recovery pipeline in the refueling machine is buried below the refueling machine, the other end of the oil gas recovery pipeline in the refueling machine is connected with the underground oil tank, and the oil gas volatilized in the refueling process is collected into the oil recovery pipeline in the refueling machine through vacuum auxiliary oil gas recovery equipment so as to achieve the purpose of oil gas collection.

And the aforesaid is carried the underground oil groove with oil gas in, and oil gas still can be volatilized to the oil of underground oil groove when storing, and when storing a period after, the oil gas in this underground oil groove can produce pressure gradually, consequently, this underground oil groove all is equipped with pressure valve and breather pipe, when the produced pressure of oil gas is greater than the value that pressure valve set for, this pressure valve can be opened and discharge to the air through the breather pipe, let the produced pressure of oil gas in the underground oil groove get back to safe value, avoid producing danger. In addition, in the oil loading and unloading process of a gasoline and diesel oil tank truck of a petroleum company or a large oil storage tank of a gasoline and diesel oil tank truck, exhaust gas is generated, and the exhaust gas contains very concentrated volatile organic gases with the concentration of 60g/Nm³，300g/Nm³Or higher.

However, the oil gas discharged from the underground oil tank through the breathing tube is likely to cause great influence on the environment, and besides polluting the surrounding air, the underground oil tank also has potential safety hazards and dangers when the concentration of the oil gas discharged from the breathing tube is too high.

Therefore, in view of the above-mentioned shortcomings, the present inventors have desired a hollow fiber tubular membrane oil and gas treatment system with a scrubbing absorption tower, which can provide oil and gas re-absorption treatment effect, and which can be easily assembled by users.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a hollow fiber tubular membrane oil-gas treatment system with a washing absorption tower, which comprises a double-barrel hollow fiber tubular membrane adsorption device, an oil-gas conveying pipeline, an exhaust conveying pipeline and the washing absorption tower, wherein oil gas is conveyed from the other end of the oil-gas conveying pipeline to the double-barrel hollow fiber tubular membrane adsorption device for oil-gas adsorption, the efficiency of the oil gas after adsorption can reach 97% or even more than 99% when the oil gas becomes purified gas, after a period of operation switching time, the adsorbed oil gas is subjected to Vacuum Swing Adsorption (VSA) desorption to obtain concentrated oil gas, and the concentrated oil gas is conveyed into the washing absorption tower through the desorption and exhaust pipeline for concentrated oil gas absorption, so that the oil gas re-absorption treatment effect is achieved, and the overall practicability is further improved.

Another objective of the present invention is to provide a hollow fiber tubular membrane oil-gas treatment system with a washing absorption tower, wherein at least one absorbent and at least one absorption tower filler are disposed in the washing absorption tower, so that the washing absorption tower can absorb the concentrated oil-gas through the absorbent, and a circulation pipeline is disposed through the washing absorption tower, one end of the circulation pipeline is connected to the at least one absorbent of the washing absorption tower, and the other end of the circulation pipeline extends into the upper portion of the at least one absorption tower filler of the washing absorption tower, and the other end of the circulation pipeline is disposed with at least one spray head, so that the absorbent with the concentrated oil-gas can be sprayed on the absorption tower filler through the circulation pipeline, so that the concentrated oil-gas has the effect of recycling absorption, thereby increasing the overall usability.

The present invention provides a hollow fiber tubular membrane oil-gas treatment system with a washing absorption tower, wherein the other end of the washing exhaust pipe is connected to the oil-gas transmission pipeline, so as to recycle the purified gas in the washing exhaust pipe to the oil-gas transmission pipeline, so that the purified gas generated after concentrated oil-gas absorption in the washing absorption tower can be re-transmitted to the double-barrel hollow fiber tubular membrane adsorption equipment via the oil-gas transmission pipeline for further adsorption, thereby providing a re-purification effect and further increasing the overall operability.

For a better understanding of the nature, features and aspects of the present invention, reference should be made to the following detailed description of the utility model, taken in conjunction with the accompanying drawings which are provided for purposes of illustration and description only and are not intended to be limiting.

Drawings

FIG. 1 is a schematic diagram of a system architecture in which a first hollow fiber tubular membrane cartridge is set to an adsorption mode according to the present invention;

FIG. 2 is a schematic diagram of a system architecture in which a second hollow fiber tubular membrane cartridge according to the present invention is set to an adsorption mode;

FIG. 3 is a schematic diagram of a system for recycling the washing exhaust gas with the first hollow fiber tubular membrane drum set to adsorption mode according to the present invention;

FIG. 4 is a schematic diagram of a system for recycling the washing exhaust gas with the second hollow fiber tubular membrane drum set to adsorption mode according to the present invention;

in the figure, the position of the upper end of the main shaft,

1. double-barrel type hollow fiber tubular membrane adsorption equipment

10. First hollow fiber tubular membrane barrel

103. Hollow fiber tubular membrane adsorption material

11. First pipeline

12. Second pipeline

121. Second extension pipeline

1211. Second extension valve

1212. Second extension flow-limiting valve

20. Second hollow fiber tubular membrane barrel

21. Third pipeline

22. Fourth pipeline

221. Fourth extension pipeline

2211. Fourth extension valve

2212. Fourth extending flow-limiting valve

30. Oil gas conveying pipeline

31. Oil gas control valve

40. Exhaust gas conveying pipeline

41. Chimney

50. Washing absorption tower

501. Absorbent agent

502. Absorption tower packing

51. Desorption discharge pipeline

511. Vacuum pump

52. Washing exhaust pipeline

60. Circulation pipeline

61. Sprinkler head

62. Circulating pump

70. Air inlet communicating pipeline

71. First air inlet valve

73. Third air inlet valve

80. Air outlet communicating pipeline

81. First air outlet valve

83. Third air outlet valve

90. Exhaust communicating pipeline

92. Second exhaust valve

94. Fourth exhaust valve

Detailed Description

Fig. 1 to 4 are schematic views of an embodiment of the present invention. The best mode of the hollow fiber tubular membrane oil gas treatment system with the washing absorption tower is applied to gas stations, underground oil storage tanks or similar areas, the efficiency of the system can reach 97 percent or even more than 99 percent when oil gas becomes purified gas after being adsorbed, and the system has the effects of oil gas concentration and reabsorption treatment.

The present invention relates to a hollow fiber tubular membrane oil gas treatment system with a scrubbing absorption tower, which mainly comprises a double-barrel hollow fiber tubular membrane adsorption apparatus 1, an oil gas delivery pipeline 30, an exhaust gas delivery pipeline 40 and a scrubbing absorption tower 50, wherein the double-barrel hollow fiber tubular membrane adsorption apparatus 1 is respectively provided with a first hollow fiber tubular membrane barrel 10 and a second hollow fiber tubular membrane barrel 20 (as shown in fig. 1 to 4), and the first hollow fiber tubular membrane barrel 10 and the second hollow fiber tubular membrane barrel 20 are respectively filled with a plurality of tubular hollow fiber tubular membrane adsorption materials 103, 203, wherein the tubular hollow fiber tubular membrane adsorption materials 103, 203 are made of a polymer and an adsorbent, the polymer is made of Polysulfone (PSF), Polyethersulfone (PESF), polyvinylidene fluoride (PVDF), Polyphenylsulfone (PVDF), PPSU), polyacrylonitrile (polyacrylonitrile), cellulose acetate, cellulose diacetate, Polyimide (PI), polyetherimide, polyamide, polyvinyl alcohol, polylactic acid, polyglycolic acid, polylactic-co-glycolic acid, polycaprolactone, polyvinylpyrrolidone (polyvinylpyrrolidone), ethylene vinyl alcohol (ethylene vinyl alcohol), polydimethylsiloxane, polytetrafluoroethylene (ptfe), and Cellulose Acetate (CA). The diameters and the outer diameters of the prepared tubular hollow fiber tubular membrane adsorption materials 103 and 203 are more than 0.5mm, so that the tubular hollow fiber tubular membrane adsorption materials have high specific surface areas, are easy to adsorb and desorb, the dosage of the adsorbent is smaller than that of the traditional particle type, the same dynamic adsorption effect can be achieved, and the desorption can be completed by using less heat energy naturally during desorption, so that the energy-saving effect is achieved.

The ratio of the adsorbent in the tubular hollow fiber tubular membrane adsorbing materials 103 and 203 is 10-90%, the adsorbent is powder, the particles of the powder have a particle size of 0.005-50 um, the particles of the powder have a two-dimensional or three-dimensional pore structure, and the pores are regular or irregular, wherein the adsorbent is at least one selected from the group consisting of molecular sieves, a-type zeolites (e.g., 3A, 4A or 5A), X-type zeolites (e.g., 13X), Y-type zeolites (e.g., ZSM-5), mesoporous molecular sieves (e.g., MCM-41, 48, 50 and SBA-15), Metal Organic Frameworks (MOFs), activated carbon and graphene.

In addition, at least one absorbent 501 and at least one absorbent 502 (as shown in fig. 1 to fig. 4) are disposed in the scrubbing and absorbing tower 50, wherein the absorbent 501 is disposed below the scrubbing and absorbing tower 50, the absorbent 501 is a liquid, the present invention uses diesel oil, and the absorbent 501 can also be other liquid capable of contacting sufficiently, so as to improve the absorption efficiency of the absorbent 501. In addition, the absorber 502 is disposed in the middle of the scrubber 50, and the absorber 502 is mainly used to increase the contact area between the liquid and the gas flow, and further increase the reaction absorption surface area, wherein the absorber 502 is a raschig ring intalox saddle packing or a corrugated packing, which provides a large gas-liquid contact surface, so that the absorber 502 can be easily wetted by the liquid, and only the wetted surface is the gas-liquid contact surface. The absorber packing 502 may be stacked (stacked) or pushed (stacked) to provide sufficient contact between the gas and the liquid.

The above-mentioned washing absorption tower 50 is provided with a circulation pipeline 60 (as shown in fig. 1 to 4), one end of the circulation pipeline 60 is connected to the lower part of the washing absorption tower 50, that is, the position of the absorbent 501, and the other end of the circulation pipeline 60 extends to penetrate the upper part of the washing absorption tower 50, that is, the upper part of the absorption tower filler 502, and the other end of the circulation pipeline 60 is provided with at least one spray head 61 (as shown in fig. 1 to 4), so that the absorbent 501 located at the lower part of the washing absorption tower 50 can be transported to the upper part of the washing absorption tower 50 through the circulation pipeline 60 and sprayed downward from the upper part of the washing absorption tower 50 by the spray head 61 to flow through the absorption tower filler 502 located at the middle part of the washing absorption tower 50, so that the absorption tower filler 502 can be adhered with a film (not shown in the figures), when the gas passes through the gap of the absorption tower filler 502, can be absorbed by the adhesive layer film and removed. The circulation pipeline 60 is provided with a circulation pump 62 (as shown in fig. 1 to 4) to push the absorbent 501 from one end of the circulation pipeline 60 to the other end of the circulation pipeline 60, so as to have a lifting effect.

In addition, the first hollow fiber tubular membrane barrel 10 of the dual-barrel hollow fiber tubular membrane adsorption apparatus 1 is provided with a first pipeline 11 and a second pipeline 12, the second hollow fiber tubular membrane barrel 20 of the dual-barrel hollow fiber tubular membrane adsorption apparatus 1 is provided with a third pipeline 21 and a fourth pipeline 22 (as shown in fig. 1 to 4), and an air inlet communication pipeline 70 and an air outlet communication pipeline 80 are respectively provided between the first pipeline 11 of the first hollow fiber tubular membrane barrel 10 and the third pipeline 21 of the second hollow fiber tubular membrane barrel 20, and an air outlet communication pipeline 90 (as shown in fig. 1 to 4) is provided between the second pipeline 12 of the first hollow fiber tubular membrane barrel 10 and the fourth pipeline 22 of the second hollow fiber tubular membrane barrel 20, wherein the air inlet communication pipeline 70 is provided with a first air inlet valve 71 and a third air inlet valve 73, the first air inlet valve 71 is close to the first air inlet pipeline 11, and the third intake valve 73 is close to the third pipeline 21, so that the gas flow direction in the intake communicating pipeline 70 can be controlled through the first intake valve 71 and the third intake valve 73, the air outlet connecting pipe 80 is provided with a first air outlet valve 81 and a third air outlet valve 83, the first air outlet valve 81 is close to the first pipeline 11, and the third air outlet valve 83 is close to the third pipeline 21, so that the air flow direction in the air outlet communication pipeline 80 can be controlled by the first air outlet valve 81 and the third air outlet valve 83, and the air outlet communication pipeline 90 is provided with a second air outlet valve 92 and a fourth air outlet valve 94, the second exhaust valve 92 is close to the second pipeline 12, and the fourth exhaust valve 94 is close to the fourth pipeline 22, so that the gas flow direction in the exhaust communication pipeline 90 can be controlled through the second exhaust valve 92 and the fourth exhaust valve 94.

The second pipeline 12 of the first hollow fiber tubular membrane cartridge 10 is connected to a second extension pipeline 121, the second extension pipe 121 is provided with a second extension valve 1211 and a second extension restriction valve 1212 (shown in fig. 1 to 4), and the gas flow direction in the second extension pipe 121 is controlled by the second extension valve 1211, and the second extending restriction valve 1212 restricts the gas in the second extending pipe 121 from flowing out from the other end, and the fourth pipe 22 of the second hollow fiber tubular membrane cartridge 20 is connected to a fourth extending pipe 221, the fourth extension pipeline 221 is provided with a fourth extension valve 2211 and a fourth extension restriction valve 2211 (as shown in fig. 1 to 4), and the gas flow direction in the fourth extension line 221 is controlled by the fourth extension valve 2211, and the gas in the fourth extension pipe 221 is restricted from flowing out from the other end by the fourth extension restriction valve 2212.

In addition, the air intake communication pipeline 70 is connected to the oil gas transmission pipeline 30, one end of the oil gas transmission pipeline 30 is connected to an oil gas generation site (not shown in the figure), wherein the oil gas generation site is any one of oil gas (disposable oil gas) in the oil unloading process of the oil tank truck, oil gas (secondary oil gas) in the oil adding process and oil gas (tertiary oil gas) exhaled from an underground oil tank, and the other end of the oil gas transmission pipeline 30 is connected to the air intake communication pipeline 70, so that the oil gas can be transmitted into the air intake communication pipeline 70 through the oil gas transmission pipeline 30 (as shown in fig. 1 and 2), and then the first air intake valve 71 and the third air intake valve 73 respectively control the switch, so that the oil gas can enter the first hollow fiber tubular membrane barrel 10 through the first pipeline 11 through the air intake communication pipeline 70 for adsorption (as shown in fig. 1 and 2), or the air-intake communication pipeline 70 is used to enter the second hollow fiber tubular membrane barrel 20 through the third pipeline 21 for adsorption (as shown in fig. 2), and the oil-gas transmission pipeline 30 is provided with an oil-gas control valve 31 (as shown in fig. 1 to 4), and the flow of the oil gas entering the oil-gas transmission pipeline 30 is controlled by the oil-gas control valve 31.

In addition, the exhaust gas communication pipe 90 is connected to one end of the exhaust gas conveying pipe 40, and the other end of the exhaust gas conveying pipe 40 has two embodiments, wherein the first embodiment is that the other end of the exhaust gas conveying pipe 40 is connected to a chimney 41 (as shown in fig. 1), and the second embodiment is that the other end of the exhaust gas conveying pipe 40 is conveyed to the atmosphere (as shown in fig. 2). On the basis, the purge gas generated after the first hollow fiber tubular membrane barrel 10 is subjected to oil-gas adsorption can be output into the exhaust communication pipeline 90 through the second pipeline 12, and then the purge gas is discharged through the other end of the exhaust conveying pipeline 40 (as shown in fig. 1), or the purge gas generated after the second hollow fiber tubular membrane barrel 20 is subjected to oil-gas adsorption can be output into the exhaust communication pipeline 90 through the fourth pipeline 22, and then the purge gas is discharged through the other end of the exhaust conveying pipeline 40 (as shown in fig. 2).

In addition, the washing and absorbing tower 50 is provided with a desorption discharge pipeline 51 and a washing exhaust pipeline 52, and one end of the desorption discharge pipeline 51 is connected to the gas outlet communication pipeline 80, so that the concentrated oil gas desorbed from the first hollow fiber tubular membrane drum 10 can be output to the gas outlet communication pipeline 80 through the first pipeline 11 and then be conveyed to the desorption discharge pipeline 51 through the gas outlet communication pipeline 80 (as shown in fig. 2), or the concentrated oil gas desorbed from the second hollow fiber tubular membrane drum 20 can be output to the gas outlet communication pipeline 80 through the third pipeline 21 and then be conveyed to the desorption discharge pipeline 51 through the gas outlet communication pipeline 80 (as shown in fig. 1). The other end of the desorption discharge pipeline 51 is connected to the washing and absorption tower 50, wherein the connection position of the washing and absorption tower 50 is a position where the absorbent 501 is disposed in the washing and absorption tower 50, so that the concentrated oil gas conveyed by the desorption discharge pipeline 51 can be fully contacted with the absorbent 501 and absorbed by the absorbent 501. The desorption discharge pipeline 51 is further provided with a vacuum pump 511 (as shown in fig. 1 to 4), and the vacuum pump 511 can desorb the oil gas in the first hollow fiber tubular membrane adsorption barrel 10 or the second hollow fiber tubular membrane adsorption barrel 20 through Vacuum Swing Adsorption (VSA), and can push the concentrated oil gas desorbed from the gas outlet communication pipeline 80 into the washing absorption tower 50 through the desorption discharge pipeline 51.

In addition, one end of the purge exhaust pipe 52 is connected to the purge absorption tower 50, and the other end of the purge exhaust pipe 52 has two embodiments, wherein the first embodiment is that the other end of the purge exhaust pipe 52 is connected to a chimney 41 (as shown in fig. 2), and the second embodiment is that the other end of the purge exhaust pipe 52 is delivered to the atmosphere (as shown in fig. 1), so that the purge gas generated after the absorption of the concentrated hydrocarbon gas by the purge absorption tower 50 can be exhausted to the outside atmosphere through the purge exhaust pipe 52.

The other end of the purge exhaust pipe 52 can perform an embodiment of recycling and adsorbing in addition to the exhaust of the outside atmosphere in the two embodiments, wherein the other end of the purge exhaust pipe 52 is connected to the oil-gas transmission pipeline 30 (as shown in fig. 3 and 4), and mainly the purge gas generated by the purge absorption tower 50 after performing the concentrated oil-gas absorption contains thin oil-gas, so the purge gas generated by the purge absorption tower 50 after performing the concentrated oil-gas absorption can be transmitted back to the oil-gas transmission pipeline 30 through the purge exhaust pipe 52, so that the purge gas in the purge exhaust pipe 50 can be mixed with the oil-gas in the oil-gas transmission pipeline 30, and then transmitted to the intake communication pipeline 70 through the other end of the oil-gas transmission pipeline 30 (as shown in fig. 3 and 4), and enters the first hollow fiber tubular membrane barrel 10 for oil-gas adsorption through the first pipeline 11 communicated with the intake communication pipeline 70 (as shown in fig. 3 and 4) Shown in the figure), or the third pipeline 21 communicated with the air inlet communication pipeline 70 enters the second hollow fiber tubular membrane barrel 20 for oil gas reabsorption (shown in the figure 3).

In addition, in practical operation, the first hollow fiber tubular membrane barrel 10 and the second hollow fiber tubular membrane barrel 20 of the dual-barrel hollow fiber tubular membrane adsorption apparatus 1 have different selections of the adsorption mode and the desorption mode, wherein the first implementation selection is set by time (not shown), for example, set to 10 minutes (not limited by this embodiment), when the time is up, the first hollow fiber tubular membrane barrel 10, which is originally in the adsorption mode, is changed to the desorption mode, and the second hollow fiber tubular membrane barrel 20, which is originally in the desorption mode, is changed to the adsorption mode. The second implementation option is to set the concentration (not shown), and a concentration detector (not shown) is disposed through the exhaust gas conveying pipeline 40, so that the first hollow fiber tubular membrane tank 10 and the second hollow fiber tubular membrane tank 20 can switch between the adsorption mode and the desorption mode according to the concentration detected by the concentration detector.

When the first hollow fiber tubular membrane barrel 10 is set to the adsorption mode (as shown in fig. 1 and 3), the second hollow fiber tubular membrane barrel 20 is set to the desorption mode, in which the first air intake valve 71 disposed on the air intake communication pipeline 70 and close to the first pipeline 11 is opened, so that the oil gas can flow through the first air intake valve 71 of the air intake communication pipeline 70 and enter the first hollow fiber tubular membrane barrel 10 for adsorption, and the third air intake valve 73 disposed on the air intake communication pipeline 70 and close to the third pipeline 21 is closed. A second exhaust valve 92 disposed on the exhaust communication pipeline 90 and close to the second pipeline 12 is opened, so that the purified gas generated after the oil-gas adsorption in the first hollow fiber tubular membrane drum 10 flows through the second exhaust valve 92 of the exhaust communication pipeline 90 via the second pipeline 12 and enters the exhaust conveying pipeline 40 (as shown in fig. 1 and 3), and the purified gas is exhausted from the other end of the exhaust conveying pipeline 40, and a fourth exhaust valve 94 disposed on the exhaust communication pipeline 90 and close to the fourth pipeline 22 is closed.

Furthermore, the desorption discharge pipeline 51 has a vacuum pump 511, when the second hollow fiber tubular membrane drum 20 is undergoing Vacuum Swing Adsorption (VSA) desorption, and when the desorption is performed by the vacuum-pumping, the third gas outlet valve 83, which is additionally disposed on the gas outlet communication pipeline 80 and is close to the third pipeline 21, is opened (as shown in fig. 2 and 3), so that the adsorbed oil gas in the second hollow fiber tubular membrane barrel 20 can be desorbed to form concentrated oil gas, and flows through the third gas outlet valve 83 of the gas outlet communication pipeline 80 through the third pipeline 21, enters the desorption discharge pipeline 51, is conveyed to the lower part of the washing absorption tower 50 to be absorbed by the absorbent 501, and finally discharges the purified gas generated after the washing absorption tower 50 is subjected to concentrated oil gas absorption through the washing exhaust pipeline 52, and a first gas outlet valve 81 disposed on the gas outlet communication pipeline 80 and close to the first pipeline 11 is in a closed state.

On the contrary, when the second hollow fiber tubular membrane barrel 20 is set to the adsorption mode (as shown in fig. 2 and fig. 4), the first hollow fiber tubular membrane barrel 10 is set to the desorption mode, wherein the third air intake valve 73 disposed on the air intake communication pipeline 70 and close to the third pipeline 21 is in an open state, so that the oil gas can flow through the third pipeline 21 via the third air intake valve 73 of the air intake communication pipeline 70 and enter the second hollow fiber tubular membrane barrel 20 for adsorption, and the first air intake valve 71 disposed on the air intake communication pipeline 70 and close to the first pipeline 11 is in a closed state. A fourth exhaust valve 94 disposed on the exhaust communication pipeline 90 and close to the fourth pipeline 22 is opened, so that the purified gas generated after the oil-gas adsorption in the second hollow fiber tubular membrane drum 20 flows through the fourth exhaust valve 94 of the exhaust communication pipeline 90 via the fourth pipeline 22 and enters the exhaust conveying pipeline 40 (as shown in fig. 2 and 4), and the purified gas is exhausted from the other end of the exhaust conveying pipeline 40, and a second exhaust valve 92 disposed on the exhaust communication pipeline 90 and close to the second pipeline 12 is closed.

Furthermore, the desorption discharge pipeline 51 has a vacuum pump 511, when the first hollow fiber tubular membrane drum 10 is performing Vacuum Swing Adsorption (VSA) desorption, when the desorption is performed by vacuuming, the first gas outlet valve 81 disposed on the gas outlet communication pipeline 80 and close to the first pipeline 11 is opened (as shown in fig. 2 and 4), so that the absorbed oil gas in the first hollow fiber tubular membrane barrel 10 can be desorbed to form concentrated oil gas, and flows through the first gas outlet valve 81 of the gas outlet communication pipeline 80 through the first pipeline 11, enters the desorption discharge pipeline 51, is conveyed to the lower part of the washing absorption tower 50 to be absorbed by the absorbent 501, and finally discharges the purified gas generated after the washing absorption tower 50 is subjected to concentrated oil gas absorption through the washing exhaust pipeline 52, and a third gas outlet valve 83 disposed on the gas outlet communication pipe 80 and close to the third pipe 21 is in a closed state.

From the above detailed description, it will be apparent to those skilled in the art that the foregoing objects are indeed achieved by the present invention, which complies with the requirements of the patent laws, and a patent application is made.

The foregoing is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby; therefore, all the equivalent changes and modifications made according to the contents of the claims and the specification of the present invention should be covered by the scope of the present invention.

Claims (16)

1. A hollow fiber tubular membrane oil and gas treatment system with a washing absorption tower is characterized by comprising:

the double-barrel type hollow fiber tubular membrane adsorption equipment is respectively provided with a first hollow fiber tubular membrane barrel and a second hollow fiber tubular membrane barrel, the first hollow fiber tubular membrane barrel is filled with a plurality of tubular hollow fiber tubular membrane adsorption materials, the first hollow fiber tubular membrane barrel is provided with a first pipeline and a second pipeline, the second hollow fiber tubular membrane barrel is filled with a plurality of tubular hollow fiber tubular membrane adsorption materials, the second hollow fiber tubular membrane barrel is provided with a third pipeline and a fourth pipeline, an air inlet communicating pipeline and an air outlet communicating pipeline are respectively arranged between the first pipeline and the third pipeline, and an air outlet communicating pipeline is arranged between the second pipeline and the fourth pipeline;

one end of the oil gas conveying pipeline is connected to the oil gas generating position, and the other end of the oil gas conveying pipeline is connected with the air inlet communicating pipeline;

one end of the exhaust conveying pipeline is connected with the exhaust communicating pipeline; and

a washing absorption tower, which is provided with a desorption discharge pipeline and a washing exhaust pipeline, wherein one end of the desorption discharge pipeline is connected with the air outlet communicating pipeline, the other end of the desorption discharge pipeline is connected with the washing absorption tower, a vacuum pump is arranged on the desorption discharge pipeline, and one end of the washing exhaust pipeline is connected with the washing absorption tower.

2. The hollow fiber tubular membrane oil and gas treatment system with scrubbing absorption tower of claim 1, wherein the scrubbing exhaust pipe is further connected at the other end to a chimney.

3. The hollow fiber tubular membrane oil and gas treatment system with the scrubbing absorption tower of claim 1, wherein the other end of the scrubbing exhaust line is further transported to the atmosphere.

4. The hollow fiber tubular membrane oil and gas treatment system with the scrubbing absorption tower of claim 1, wherein the other end of the scrubbing exhaust line is further connected to the oil and gas transmission line.

5. The hollow fiber tubular membrane oil and gas treatment system with scrubbing absorption tower of claim 1, wherein the other end of the exhaust gas transfer line is further connected to a chimney.

6. The hollow fiber tubular membrane oil and gas treatment system with washing absorption tower of claim 1, wherein the other end of the exhaust gas delivery line is further delivered to the atmosphere.

7. The hollow fiber tubular membrane oil and gas treatment system with scrubbing and absorption tower of claim 1, wherein said inlet connection further comprises a first inlet valve and a third inlet valve.

8. The hollow fiber tubular membrane oil and gas treatment system with a scrubbing and absorption tower of claim 1, wherein the gas outlet communication line further comprises a first gas outlet valve and a third gas outlet valve.

9. The hollow fiber tubular membrane oil and gas treatment system with scrubbing and absorption tower of claim 1, wherein said exhaust gas communication line further comprises a second exhaust valve and a fourth exhaust valve.

10. The hollow fiber tubular membrane oil and gas treatment system with a scrubbing and absorption tower of claim 1, wherein the second pipeline is further connected to a second extension pipeline, the second extension pipeline further having a second extension valve and a second extension restriction valve.

11. The hollow fiber tubular membrane oil and gas treatment system with a scrubbing and absorption tower of claim 1, wherein the fourth pipeline is further connected to a fourth extension pipeline, the fourth extension pipeline further having a fourth extension valve and a fourth extension limiting valve.

12. The hollow fiber tubular membrane oil and gas treatment system with the washing absorption tower of claim 1, wherein at least one absorbent is further disposed in the washing absorption tower, and the absorbent is diesel oil.

13. The hollow fiber tubular membrane oil and gas treatment system with the scrub absorber of claim 1, wherein the scrub absorber is further provided with at least one absorber packing.

14. The hollow fiber tubular membrane oil and gas treatment system with the washing absorption tower as claimed in claim 1, wherein the washing absorption tower is further provided with a circulation pipeline, and the other end of the circulation pipeline is provided with at least one sprinkler head.

15. The hollow fiber tubular membrane oil and gas treatment system with a scrub absorption tower of claim 14, wherein the other end of the circulation line further extends into the scrub absorption tower.

16. The hollow fiber tubular membrane oil and gas treatment system with a washing absorption tower of claim 14, wherein one end of the circulation pipeline is further connected to the lower part of the washing absorption tower, and the circulation pipeline is further provided with a circulation pump.

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