CN109126752B - Efficient oil gas recovery adsorption tank regeneration device and regeneration method - Google Patents
Efficient oil gas recovery adsorption tank regeneration device and regeneration method Download PDFInfo
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- CN109126752B CN109126752B CN201710497712.2A CN201710497712A CN109126752B CN 109126752 B CN109126752 B CN 109126752B CN 201710497712 A CN201710497712 A CN 201710497712A CN 109126752 B CN109126752 B CN 109126752B
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- vacuum unit
- adsorption tank
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- regeneration
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 39
- 238000011069 regeneration method Methods 0.000 title claims abstract description 24
- 238000011084 recovery Methods 0.000 title claims abstract description 19
- 230000008929 regeneration Effects 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 claims abstract description 4
- 238000000605 extraction Methods 0.000 claims description 11
- 239000012855 volatile organic compound Substances 0.000 claims description 6
- 238000003795 desorption Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000005086 pumping Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3491—Regenerating or reactivating by pressure treatment
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention discloses a high-efficiency oil gas recovery adsorption tank regeneration device, which comprises a liquid ring vacuum unit, a Roots vacuum unit and a screw vacuum unit, wherein the liquid ring vacuum unit, the Roots vacuum unit and the screw vacuum unit are connected with an adsorption tank through pipelines; the regeneration method is applied to the oil gas recovery device with large treatment capacity, can greatly reduce investment under the condition that the air suction volume is the same and the same air suction effect is achieved, and can reduce the gas ratio of the initial gas flow and the final gas flow, so that the whole regeneration process is more stable in operation.
Description
Technical Field
The invention relates to a high-efficiency oil gas recovery adsorption tank regeneration device and a regeneration method, which are mainly applied to oil gas recovery devices with large treatment capacity such as wharfs, refineries and the like in the loading and unloading processes of volatile substances.
Background
The vacuum pumping pressure in the oil gas recovery device affects the concentration of the tail gas and the concentration of the desorption gas, greatly affects the equipment scale of the oil gas recovery device, the investment and the operating cost of the whole device, and affects the operation stability of the whole device, so the device is an important operation parameter.
In the prior art, the oil gas recovery device is repeatedly used, the regeneration mode of the oil gas recovery device is a two-stage vacuumizing mode formed by a pure liquid ring vacuum unit or a screw vacuum unit or a combination of the liquid ring vacuum unit and the screw vacuum unit, and the oil gas recovery device is not suitable for recovering mixed gas with large treatment capacity and multiple substances without a multi-stage composite vacuumizing mode.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-efficiency oil gas recovery adsorption tank regeneration device and a regeneration method, so that under the condition that the air extraction amount is the same and the same air extraction effect is achieved, the investment can be greatly reduced, the gas ratio of the initial flow and the final flow of gas can be reduced, and the whole regeneration process is more stable in operation.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a high-efficiency oil gas recovery adsorption tank regenerating device comprises a liquid ring vacuum unit, a Roots vacuum unit and a screw vacuum unit which are connected with an adsorption tank through pipelines, wherein the Roots vacuum unit and the screw vacuum unit are connected in series and are connected in parallel with the liquid ring vacuum unit; the adsorption tank is characterized in that an analysis valve is arranged at the outlet of the adsorption tank, a first program control valve is arranged on a pipeline between the liquid ring vacuum unit and the adsorption tank, a second program control valve is arranged on a pipeline between the Roots vacuum unit and the screw vacuum unit and the adsorption tank, and a heat exchanger is arranged between the Roots vacuum unit and the screw vacuum unit and used for cooling the liquid ring vacuum unit.
A regeneration method of a regeneration device of an efficient oil gas recovery adsorption tank comprises the following steps:
firstly, starting a liquid ring vacuum unit, and sending most of air and small part of VOCs in an adsorption tank to a subsequent treatment device;
secondly, when the vacuum degree in the adsorption tank reaches a set value, starting the screw vacuum unit, operating the screw vacuum unit and the adsorption tank simultaneously to ensure the stability of air extraction, and extracting a large amount of VOCs from a carbon bed of the adsorption tank to send the VOCs to a subsequent treatment device;
finally, when the vacuum degree continues to reduce to another setting value, start roots vacuum unit, the three moves simultaneously, can obtain big air extraction, the effect of low vacuum degree can thoroughly desorb the difficult desorption material of triphen class in the adsorption tank, satisfies the national standard requirement.
Through the technical scheme, the high-efficiency oil gas recovery adsorption tank regeneration device and the regeneration method provided by the invention can greatly reduce the investment of a vacuum system with large extraction amount, can ensure stable air flow in the whole process of air extraction, and have the characteristics of large extraction amount and low investment by using the liquid ring vacuum unit as a first-stage vacuum system; the dry type vacuum unit is used as a second-stage vacuum system, a pump with small air suction amount can be properly selected, and the dry type vacuum unit has the advantages of high vacuum degree and high air suction speed; the Roots vacuum unit as a third-stage vacuum system has the characteristics of large air extraction amount, high vacuum degree and stable air flow, so that the effective proportion and reasonable logic control of the three vacuum systems are realized, the cost performance is improved compared with the conventional vacuum system, and the operation is stable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic structural diagram of a high-efficiency oil gas recovery adsorption tank regeneration device disclosed by the embodiment of the invention.
In the figure, 1, an adsorption tank; 2. a resolving valve; 3. a liquid ring vacuum unit; 4. a Roots vacuum unit; 5. a heat exchanger; 6. a screw vacuum unit; 7. a first program control valve; 8. and a second program control valve.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The invention provides a high-efficiency oil gas recovery adsorption tank regeneration device, which is low in operation cost and stable in operation as shown in figure 1.
The high-efficiency oil gas recovery adsorption tank regeneration device shown in fig. 1 comprises a liquid ring vacuum unit 3, a roots vacuum unit 4 and a screw vacuum unit 6 which are connected with 4 adsorption tanks 1 through pipelines, wherein the roots vacuum unit 4 and the screw vacuum unit 6 are connected in series and are connected with the liquid ring vacuum unit 3 in parallel; an outlet of the adsorption tank 1 is provided with an analytic valve 2, a first program control valve 7 is arranged on a pipeline between the liquid ring vacuum unit 3 and the adsorption tank 1, a second program control valve 8 is arranged on a pipeline between the Roots vacuum unit 4 and the screw vacuum unit 6 and the adsorption tank 1, and a heat exchanger 5 is arranged between the Roots vacuum unit 4 and the screw vacuum unit 6 and used for cooling the Roots vacuum unit 6.
The specific implementation mode of the invention is as follows:
assume that 5000m is required3The vacuum pumping rate of the first-stage vacuum pumping system is 5000m3And h, firstly starting the liquid ring vacuum unit 3, starting the program control valve I7, and simultaneously starting the analysis valves 2 of the 4 adsorption tanks 1. When the pressure transmitter monitors that the vacuum degree in the adsorption tank 1 reaches 30kpa, the screw vacuum unit 6 is started, the second program control valve 8 is opened, and the screw vacuum unit 6 has large investment, so that the mixture ratio can reach 1500m3Flow rate per hour. The two run simultaneously, can reduce the vacuum degree to 10kpa rapidly, start Roots vacuum unit 4 this moment, the ratio is 4000m3About/h, the final vacuum degree can reach about 1kpa, and substances which are difficult to desorb can also be desorbed. And the air extraction quantity is kept 3500-5000m in the whole vacuum-pumping process3And the air flow is stable between h, and the investment is saved by about half compared with the method of only using a screw vacuum unit.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. A regeneration method of a regeneration device of an efficient oil gas recovery adsorption tank is characterized in that the regeneration device comprises a liquid ring vacuum unit, a Roots vacuum unit and a screw vacuum unit which are connected with the adsorption tank through pipelines, wherein the Roots vacuum unit and the screw vacuum unit are connected in series and are connected with the liquid ring vacuum unit in parallel; an analysis valve is arranged at the outlet of the adsorption tank, a first program control valve is arranged on a pipeline between the liquid ring vacuum unit and the adsorption tank, a second program control valve is arranged on pipelines between the Roots vacuum unit and the screw vacuum unit and the adsorption tank, and a heat exchanger is arranged between the Roots vacuum unit and the screw vacuum unit;
the regeneration method comprises the following steps:
firstly, starting a liquid ring vacuum unit, and sending most of air and small part of VOCs in an adsorption tank to a subsequent treatment device;
secondly, when the vacuum degree in the adsorption tank reaches a set value, starting the screw vacuum unit, operating the screw vacuum unit and the adsorption tank simultaneously to ensure the stability of air extraction, and extracting a large amount of VOCs from a carbon bed of the adsorption tank to send the VOCs to a subsequent treatment device;
finally, when the vacuum degree continues to reduce to another setting value, start roots vacuum unit, the three moves simultaneously, can obtain big air extraction, the effect of low vacuum degree can thoroughly desorb the difficult desorption material of triphen class in the adsorption tank, satisfies the national standard requirement.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710497712.2A CN109126752B (en) | 2017-06-27 | 2017-06-27 | Efficient oil gas recovery adsorption tank regeneration device and regeneration method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710497712.2A CN109126752B (en) | 2017-06-27 | 2017-06-27 | Efficient oil gas recovery adsorption tank regeneration device and regeneration method |
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| Publication Number | Publication Date |
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| CN109126752A CN109126752A (en) | 2019-01-04 |
| CN109126752B true CN109126752B (en) | 2021-08-10 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2804787A1 (en) * | 2000-02-04 | 2001-08-10 | Bernatom | METHOD AND DEVICE FOR REDUCING RADIOACTIVE WASTE AND, IN PARTICULAR, IN THE NUCLEAR POWER PLANTS AND NUCLEAR STUDIES CENTERS |
| CN202355985U (en) * | 2011-10-19 | 2012-08-01 | 中国石油化工股份有限公司 | Oil-gas recovery device with cooling system and double vacuum pumps |
| CN204865452U (en) * | 2015-05-27 | 2015-12-16 | 中国石油化工股份有限公司 | Multistage vacuum unit and vapor recovery system device |
| CN205455990U (en) * | 2016-03-01 | 2016-08-17 | 云南昆船设计研究院 | Tobacco is organized with mechanical type vacuator |
| CN205897890U (en) * | 2016-07-20 | 2017-01-18 | 京能十堰热电有限公司 | A vacuum unit configuration system for thermal power factory |
| CN106807179A (en) * | 2017-01-26 | 2017-06-09 | 上海聚宸新能源科技有限公司 | A kind of adsorption condensing device for recovering oil and gas and petroleum vapor recovery technique using from absorption hot recycling |
-
2017
- 2017-06-27 CN CN201710497712.2A patent/CN109126752B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2804787A1 (en) * | 2000-02-04 | 2001-08-10 | Bernatom | METHOD AND DEVICE FOR REDUCING RADIOACTIVE WASTE AND, IN PARTICULAR, IN THE NUCLEAR POWER PLANTS AND NUCLEAR STUDIES CENTERS |
| CN202355985U (en) * | 2011-10-19 | 2012-08-01 | 中国石油化工股份有限公司 | Oil-gas recovery device with cooling system and double vacuum pumps |
| CN204865452U (en) * | 2015-05-27 | 2015-12-16 | 中国石油化工股份有限公司 | Multistage vacuum unit and vapor recovery system device |
| CN205455990U (en) * | 2016-03-01 | 2016-08-17 | 云南昆船设计研究院 | Tobacco is organized with mechanical type vacuator |
| CN205897890U (en) * | 2016-07-20 | 2017-01-18 | 京能十堰热电有限公司 | A vacuum unit configuration system for thermal power factory |
| CN106807179A (en) * | 2017-01-26 | 2017-06-09 | 上海聚宸新能源科技有限公司 | A kind of adsorption condensing device for recovering oil and gas and petroleum vapor recovery technique using from absorption hot recycling |
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| CN109126752A (en) | 2019-01-04 |
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Effective date of registration: 20221109 Address after: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec Safety Engineering Research Institute Co.,Ltd. Address before: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: SINOPEC Research Institute OF SAFETY ENGINEERING |