CN110585850A - Method for prolonging service cycle of adsorbent of oil gas recovery device - Google Patents
Method for prolonging service cycle of adsorbent of oil gas recovery device Download PDFInfo
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- CN110585850A CN110585850A CN201910836463.4A CN201910836463A CN110585850A CN 110585850 A CN110585850 A CN 110585850A CN 201910836463 A CN201910836463 A CN 201910836463A CN 110585850 A CN110585850 A CN 110585850A
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- adsorbent
- oil gas
- adsorption tower
- gas recovery
- recovery device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40086—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by using a purge gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/402—Further details for adsorption processes and devices using two beds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention belongs to the technical field of oil gas recovery, and particularly relates to a method for prolonging the service life of an adsorbent of an oil gas recovery device. The method comprises the following steps of respectively carrying out nitrogen replacement treatment and vacuum-pumping treatment on an adsorption tower in the oil gas recovery device after the oil gas recovery device stops running; the nitrogen conversion treatment comprises introducing nitrogen from the upper part of the adsorption tower, and replacing a small amount of oil gas around the adsorbent in the adsorption tower by utilizing the positive pressure of the nitrogen, so that the concentration of the oil gas around the adsorbent is reduced, the use effect of the adsorbent is ensured, and the adsorbent is protected; the vacuumizing treatment comprises the step of vacuumizing the adsorption tower, wherein high-concentration oil gas in the adsorbent is pumped out, so that hydrocarbon in gaps of the adsorbent is volatilized in vacuum, and the adsorbent is analyzed. The invention solves the problem of short operation period and frequent regeneration of the adsorbent by modifying the operation control program of the oil gas recovery system on the premise of not adding any equipment.
Description
Technical Field
The invention belongs to the technical field of oil gas recovery, and particularly relates to a method for prolonging the service life of an adsorbent of an oil gas recovery device.
Background
The tail gas of the loading system needs to be treated by the oil-gas recovery device so as to meet the national emission requirement of environmental protection. At present, a condensation and adsorption process route is commonly adopted in an oil gas recovery process route, two adsorption towers are commonly arranged for ensuring long-period operation of an adsorbent, one adsorption tower is used for normal adsorption, the other adsorption tower is used for resolution, and the phenomenon that the adsorption effect is reduced and the emission index exceeds the standard can occur at the last stage of operation of the adsorbent. The adsorbent is typically regenerated at the end of the adsorbent using a thermal nitrogen desorption process. However, when the adsorbent is regenerated by hot nitrogen, the operation of the oil gas recovery device needs to be stopped, which causes the oil gas recovery device to fail to perform normal oil gas operation. Therefore, the service cycle of the adsorbent is prolonged as much as possible, and frequent regeneration of the adsorbent is avoided.
Disclosure of Invention
Technical problem to be solved
The invention provides a method for prolonging the service life of an adsorbent of an oil gas recovery device, which aims to solve the technical problem of how to prolong the service life of the adsorbent and avoid frequent regeneration of the adsorbent.
(II) technical scheme
In order to solve the technical problem, the invention provides a method for prolonging the service life of an adsorbent of an oil gas recovery device, which comprises the steps of respectively carrying out nitrogen replacement treatment and vacuumizing treatment on an adsorption tower in the oil gas recovery device after the oil gas recovery device stops running; wherein the content of the first and second substances,
the nitrogen conversion treatment comprises introducing nitrogen from the upper part of the adsorption tower, and replacing a small amount of oil gas around the adsorbent in the adsorption tower by utilizing the positive pressure of the nitrogen, so that the concentration of the oil gas around the adsorbent is reduced, the use effect of the adsorbent is ensured, and the adsorbent is protected;
the vacuumizing treatment comprises the step of vacuumizing the adsorption tower, wherein high-concentration oil gas in the adsorbent is pumped out, so that hydrocarbon in gaps of the adsorbent is volatilized in vacuum, and the adsorbent is analyzed.
(III) advantageous effects
The method for prolonging the service cycle of the adsorbent of the oil gas recovery device comprises the steps of respectively carrying out nitrogen replacement treatment and vacuumizing treatment on an adsorption tower in the oil gas recovery device after the oil gas recovery device stops running; the nitrogen conversion treatment comprises introducing nitrogen from the upper part of the adsorption tower, and replacing a small amount of oil gas around the adsorbent in the adsorption tower by utilizing the positive pressure of the nitrogen, so that the concentration of the oil gas around the adsorbent is reduced, the use effect of the adsorbent is ensured, and the adsorbent is protected; the vacuumizing treatment comprises the step of vacuumizing the adsorption tower, wherein high-concentration oil gas in the adsorbent is pumped out, so that hydrocarbon in gaps of the adsorbent is volatilized in vacuum, and the adsorbent is analyzed.
The invention solves the problem of short operation period and frequent regeneration of the adsorbent by modifying the operation control program of the oil gas recovery system on the premise of not adding any equipment. And after the oil gas recovery device is stopped, nitrogen is started to carry out nitrogen replacement on the adsorption tower, meanwhile, the adsorbent in the adsorbent is analyzed by combining a vacuumizing process, and then the adsorbent is sent into an oil gas buffer tank through a vacuum pump, so that zero emission is realized. The invention is suitable for tail gas control of various oil gas recovery devices.
Drawings
FIG. 1 is a schematic diagram of the principle of the method for prolonging the service life of the adsorbent of the oil and gas recovery device according to the embodiment of the invention.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The embodiment provides a method for prolonging the service life of an adsorbent of an oil gas recovery device, and the principle of the method is shown in figure 1. The method specifically comprises the following steps:
s1, closing air inlet valves HV1003, HV1006 and air outlet valves HV1004, HV1007 of the first adsorption tower A and the second adsorption tower B;
s2, injecting nitrogen into the first adsorption tower A from a nitrogen automatic regulating valve HV1009 of the nitrogen balance pipeline at the top of the adsorption tower; the adsorption column pressure may be set to 95 KPa;
s3, when the pressure in the first adsorption tower A reaches a preset value, closing the nitrogen automatic regulating valve HV1009, opening an air inlet valve HV1003 at the bottom of the first adsorption tower A, and discharging the pressure in the first adsorption tower A to the normal pressure;
and S4, simultaneously opening a vacuum pump valve HV1008 at the bottom of the second adsorption tower B, starting a vacuum pump P-1001 to vacuumize the second adsorption tower B, maintaining for 30 minutes after the second adsorption tower B is vacuumized to below-90 KPa, and switching the first adsorption tower A and the second adsorption tower B. Rich oil gas analyzed by the second adsorption tower B enters an oil gas buffer tank V-1002, and the rich oil gas is treated together with loading oil gas when the oil gas recovery device operates;
s5, repeating the steps, performing nitrogen replacement on the second adsorption tower B, and performing vacuum-pumping treatment on the first adsorption tower A;
and S6, repeating the steps, and performing nitrogen replacement and vacuumizing operation twice on the first adsorption tower A and the second adsorption tower B respectively to replace the high-concentration oil gas remained in the adsorbent to the maximum extent.
The method can ensure that the delay of the use period of the adsorbent is prolonged by more than 1 time.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (1)
1. A method for prolonging the service life of an adsorbent of an oil gas recovery device is characterized by comprising the steps of respectively carrying out nitrogen replacement treatment and vacuumizing treatment on an adsorption tower in the oil gas recovery device after the oil gas recovery device stops running; wherein the content of the first and second substances,
the nitrogen conversion treatment comprises introducing nitrogen from the upper part of the adsorption tower, and replacing a small amount of oil gas around the adsorbent in the adsorption tower by utilizing the positive pressure of the nitrogen, so that the concentration of the oil gas around the adsorbent is reduced, the use effect of the adsorbent is ensured, and the adsorbent is protected;
the vacuumizing treatment comprises the step of vacuumizing the adsorption tower, wherein high-concentration oil gas in the adsorbent is pumped out, so that hydrocarbon in gaps of the adsorbent is volatilized in vacuum, and the adsorbent is analyzed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910836463.4A CN110585850A (en) | 2019-09-05 | 2019-09-05 | Method for prolonging service cycle of adsorbent of oil gas recovery device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910836463.4A CN110585850A (en) | 2019-09-05 | 2019-09-05 | Method for prolonging service cycle of adsorbent of oil gas recovery device |
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| CN110585850A true CN110585850A (en) | 2019-12-20 |
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| CN201910836463.4A Pending CN110585850A (en) | 2019-09-05 | 2019-09-05 | Method for prolonging service cycle of adsorbent of oil gas recovery device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112275089A (en) * | 2020-10-15 | 2021-01-29 | 河南中烟工业有限责任公司 | Effluent disposal polluted gas purification system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5415682A (en) * | 1993-11-12 | 1995-05-16 | Uop | Process for the removal of volatile organic compounds from a fluid stream |
| CN103521027A (en) * | 2013-09-25 | 2014-01-22 | 江苏中远环保科技有限公司 | Oxygen-removed oil gas recovery method and device |
| CN104474837A (en) * | 2014-11-04 | 2015-04-01 | 中国石油化工股份有限公司 | Passivation method of oil-gas recovery system adsorbent |
| CN105214439A (en) * | 2015-09-14 | 2016-01-06 | 清本环保工程(杭州)有限公司 | Oil-gas recovery processing device and method |
| CN205032054U (en) * | 2015-09-14 | 2016-02-17 | 清本环保工程(杭州)有限公司 | Oil -gas recovery processing device |
-
2019
- 2019-09-05 CN CN201910836463.4A patent/CN110585850A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5415682A (en) * | 1993-11-12 | 1995-05-16 | Uop | Process for the removal of volatile organic compounds from a fluid stream |
| CN103521027A (en) * | 2013-09-25 | 2014-01-22 | 江苏中远环保科技有限公司 | Oxygen-removed oil gas recovery method and device |
| CN104474837A (en) * | 2014-11-04 | 2015-04-01 | 中国石油化工股份有限公司 | Passivation method of oil-gas recovery system adsorbent |
| CN105214439A (en) * | 2015-09-14 | 2016-01-06 | 清本环保工程(杭州)有限公司 | Oil-gas recovery processing device and method |
| CN205032054U (en) * | 2015-09-14 | 2016-02-17 | 清本环保工程(杭州)有限公司 | Oil -gas recovery processing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112275089A (en) * | 2020-10-15 | 2021-01-29 | 河南中烟工业有限责任公司 | Effluent disposal polluted gas purification system |
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Application publication date: 20191220 |