CN110585851A - Filling station's cubic vapor recovery system device - Google Patents
Filling station's cubic vapor recovery system device Download PDFInfo
- Publication number
- CN110585851A CN110585851A CN201911020379.1A CN201911020379A CN110585851A CN 110585851 A CN110585851 A CN 110585851A CN 201911020379 A CN201911020379 A CN 201911020379A CN 110585851 A CN110585851 A CN 110585851A
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- gas
- adsorption
- storage tank
- oil
- vacuum pump
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- 238000011084 recovery Methods 0.000 title claims abstract description 45
- 238000001179 sorption measurement Methods 0.000 claims abstract description 73
- 238000000034 method Methods 0.000 claims abstract description 25
- 230000008929 regeneration Effects 0.000 claims abstract description 21
- 238000011069 regeneration method Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 13
- 210000003437 trachea Anatomy 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 238000010926 purge Methods 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 18
- 238000005086 pumping Methods 0.000 abstract 3
- 229910052799 carbon Inorganic materials 0.000 description 6
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane 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
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- 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
-
- 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
Landscapes
- 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)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention discloses a tertiary oil gas recovery device of a gas station, which comprises an adsorption tank, a vacuum pump and a buried storage tank, wherein the adsorption tank is arranged in the gas station; the bottom of two adsorption tanks is connected with two branch air inlet lines of air inlet pipeline respectively, the bottom of two adsorption tanks still is connected with two branch vacuum pumping lines of vacuum pumping pipeline respectively, vacuum pumping pipeline is connected with the vacuum pump, still be provided with on the regeneration trachea line of vacuum pump and buried storage tank and be used for preliminary radiating radiator, insert the regeneration trachea line one end that buries in the storage tank still to be connected with gas distributor, bury the oil gas discharge pipeline at storage tank top still and be connected with air inlet pipeline. The invention has the advantages of simple structure, low cost, high oil gas recovery efficiency through the repeated circulating adsorption, regeneration and absorption treatment processes; the buried storage tank replaces an absorption tower to complete an absorption link, and a lean and rich oil pump is not required to be configured, so that the primary investment can be greatly reduced, and the occupied area can be reduced.
Description
Technical Field
The invention relates to the technical field of tertiary oil gas recovery of a gas station, in particular to a tertiary oil gas recovery device of the gas station.
Background
The gasoline inevitably has the problem of a large amount of oil gas volatilization in the storage and transportation process, and the volatile VOCs not only brings serious environmental pollution and resource waste, but also influences human health and causes potential safety hazard. Therefore, the recovery of the VOCs in the oil and gas storage and transportation process is more and more emphasized.
At present, the oil gas recovery technology mainly comprises four process routes of an adsorption method, a condensation method, an absorption method and a membrane separation method.
The adsorption method (also called adsorption-absorption method) has the advantages of simple structure, low operation energy consumption, stable operation, high recovery rate and the like, and is widely applied to oil gas recovery in oil depots. However, the recovery technology has the problems of large occupied area, high absorbent requirement and the like, the occupied area of a gas station is limited, and an adsorption method is difficult to adopt in oil gas recovery of the gas station.
Disclosure of Invention
The invention discloses a tertiary oil gas recovery device of a gas station, aiming at solving the technical problems of large occupied area, high absorbent requirement and the like in the existing oil gas adsorption recovery method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a tertiary oil gas recovery device of a gas station comprises two adsorption tanks arranged in parallel, a vacuum pump connected with the two adsorption tanks, and a buried storage tank connected with the vacuum pump; the bottom of two adsorption tanks is connected with two inlet branch pipelines of inlet line respectively, and the bottom of two adsorption tanks still is connected with two evacuation branch pipelines of evacuation pipeline respectively, and evacuation pipeline is connected with the vacuum pump, still be provided with on the vacuum pump and the regeneration trachea line of burying the ground storage tank and be used for preliminary radiating radiator, insert the regeneration trachea line one end of burying in the ground storage tank still be connected with gas distributor, and the oil gas discharge pipeline at burying the ground storage tank top still is connected with inlet line.
In a further preferred embodiment of the present invention, the two adsorption tanks are continuously and alternately operated, and when one adsorption tank is in an adsorption state, the other adsorption tank is in a regeneration state.
Preferably, the top of each of the two adsorption tanks is connected with an exhaust pipeline, and an exhaust valve and a purging valve are further mounted on the exhaust pipeline.
In a further preferred embodiment of the present invention, the two adsorption tanks each contain activated carbon for oil gas recovery.
In a further preferred embodiment of the present invention, electrically controlled valves are provided in both the two branched intake pipes and the two branched vacuum pipes.
Preferably, the vacuum pump is a scroll vacuum pump, and the adsorption tank is vacuumized to realize a high-concentration oil-gas regeneration process.
As a further preference of the invention, the gas distributor is submerged below the oil level in the buried storage tank.
The beneficial effect of the invention is that,
1. the buried storage tank of the gas station is used for replacing an absorption tower of a conventional adsorption method oil gas recovery device to complete an absorption link, and a lean oil pump and a rich oil pump are not required to be configured, so that the primary investment can be greatly reduced, and the occupied area can be reduced.
2. The scroll vacuum pump is used for replacing a screw vacuum pump, so that the cost of the vacuum pump is reduced.
3. The recovery device has simple structure and low cost, and the oil gas is subjected to repeated cyclic adsorption, regeneration and absorption treatment processes, so that the oil gas recovery efficiency is high.
Drawings
FIG. 1 is a schematic view of an oil gas recovery device according to the present invention;
fig. 2 is a schematic structural diagram of an oil gas recovery system in the present invention.
Wherein, 1-an adsorption tank; 2-a vacuum pump; 3-a radiator; 4, burying a storage tank; 5-a gas distributor; 6-an electric control valve; 7-purge valve; 8-an air inlet; 9-a discharge port; 10-an oil gas recovery device; 11-high grade buried tank; 12-low grade buried tank; 13-an air intake line; 14-a regeneration gas line; 15-a tail gas discharge line; 16-oil and gas discharge lines; 17-an upper computer; 18-cable.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a tertiary oil gas recovery device 10 of a gas station comprises two adsorption tanks 1 arranged in parallel, a vacuum pump 2 connected with the two adsorption tanks 1, and a buried storage tank 4 connected with the vacuum pump 2; the bottom parts of the two adsorption tanks 1 are respectively connected with two gas inlet branch pipelines of a gas inlet pipeline 13, the bottom parts of the two adsorption tanks 1 are also respectively connected with two vacuumizing branch pipelines of a vacuumizing pipeline, the vacuumizing pipeline is connected with a vacuum pump 2, the vacuum pump 2 and a regenerated gas pipeline 14 of the buried storage tank 4 are also provided with a radiator 3 for preliminary heat dissipation, one end of the regenerated gas pipeline 14 connected into the buried storage tank 4 is also connected with a gas distributor 5, and an oil gas discharge pipeline 16 at the top part of the buried storage tank 4 is also connected with the gas inlet pipeline 13; when the gas distributor 5 in the buried storage tank 4 is installed, the manhole of the buried storage tank 4 needs to be modified, the gas distributor 5 is placed into the buried storage tank 4 from the manhole, gas is dispersed below the oil level of the buried storage tank 4 through the gas distributor 5, and the oil gas absorption recovery link is completed.
Particularly, the two adsorption tanks 1 continuously and alternately operate, wherein when one adsorption tank 1 is in an adsorption state, the other adsorption tank 1 is in a regeneration state.
Particularly, the tops of the two adsorption tanks 1 are connected with an exhaust pipeline, an exhaust valve and a purging valve 7 are further mounted on the exhaust pipeline, and the exhaust valve and the purging valve 7 are used for cleaning the adsorption tanks 1.
In particular, the two adsorption tanks 1 are respectively filled with active carbon for recovering oil gas to absorb VOCs in the oil gas, the active carbon has selective adsorption and can adsorb hydrocarbon components in the gasoline to the surface of the active carbon, and air components pass through the active carbon and are discharged through a discharge port 9 of a tail gas discharge pipeline 15 at the top of the adsorption tank 1 to reach the standard.
Particularly, the two air inlet branch pipelines and the two vacuumizing branch pipelines are respectively provided with an electric control valve 6, the electric control valves 6 on the air inlet branch pipelines are used for controlling the opening and closing of the oil-gas adsorption process, and the electric control valves 6 on the vacuumizing branch pipelines are used for controlling the opening and closing of the oil-gas regeneration process.
In particular, the vacuum pump 2 adopts a scroll vacuum pump 2 to replace a screw vacuum pump 2 in the conventional adsorption method oil gas recovery device 10, the adsorption tank 1 is vacuumized to realize a high-concentration oil gas regeneration process, and the cost of the vacuum pump 2 is greatly reduced.
In particular, the gas distributor 5 is immersed below the oil surface in the buried storage tank 4, and the oil gas is absorbed by the gasoline in a bubbling manner.
In the invention, an air inlet 8 on an oil gas clean air inlet pipeline 13 enters a recovery device, the recovery device is firstly adsorbed by activated carbon in adsorption tanks 1, an electric control valve 6 on a corresponding air inlet branch pipeline is closed after the adsorption in one adsorption tank 1 is saturated, a vacuum pump 2 is started to vacuumize the adsorption tanks 1 to realize oil gas regeneration, a flow meter is arranged on the air inlet pipeline 13, the volume of the oil gas entering the active carbon bed layer can be calculated in an accumulated way, when the oil gas is accumulated to a set value, the other adsorption tank 1 starts to adsorb by switching the electric control valve 6, the vortex vacuum pump 2 is started to vacuumize the adsorption tank 1 when regenerating, when the pressure of the adsorption tank 1 is reduced, the adsorption capacity of the active carbon is weakened, hydrocarbon components adsorbed on the activated carbon can be desorbed from the activated carbon, so that the activated carbon can be recycled; the two adsorption tanks 1 continuously and alternately perform adsorption and regeneration processes, regenerated high-concentration oil gas is cooled through the radiator 3, then sent into the buried storage tank 4 of the gas station, dispersed by the gas distributor 5 and absorbed by gasoline in the buried storage tank 4, unabsorbed oil gas enters the oil gas recovery device 10 through the oil gas discharge pipeline 16 again, and the adsorption, regeneration and absorption processes are performed in a circulating mode again.
The invention also discloses a tertiary oil gas recovery system of a gas station, wherein one end of an air inlet pipeline 13 of the recovery device is connected with the high-grade buried tank 11, a regenerated gas pipeline 14 is connected with the low-grade buried tank 12, the high-grade buried tank 11 and the low-grade buried tank 12 are both connected with an oil gas discharge pipeline 16, and when the equipment is abnormal, oil gas is discharged from the oil gas discharge pipeline 16, so that potential safety hazards caused by pressure build-up of the buried tanks are avoided; after the oil gas recovery processing, the gas up to the standard is exhausted through a tail gas exhaust pipeline 15, the recovery device is also in communication connection with an upper computer 17 through a cable 18, and the upper computer 17 can monitor and operate the recovery device.
In particular, various detecting instruments such as a flowmeter, a micro-pressure sensor and a control valve are also installed on the air inlet pipeline 13, the oil gas recovery system realizes automatic control through PCL, when the pressure reaches a set value, the control valve is opened, oil gas enters the recovery device, and when the pressure is lower than the set value, the control valve is closed.
In addition, a plurality of process alarms are designed in the system, and when a fault occurs, the upper computer 17 can prompt an operator through sound and light alarm.
In the conventional adsorption method oil gas recovery device 10, there are two adsorption tanks 1 which run alternately, one or a group of screw vacuum pumps 2, two pipeline pumps and one absorption tower. The oil gas is collected and then firstly enters the adsorption tanks 1, the two adsorption tanks 1 alternately run, one is in an adsorption state, and the other is in a regeneration or waiting state. When one adsorption tank 1 is saturated in adsorption, the adsorption tank 1 is switched to another adsorption tank 1 for adsorption, meanwhile, a vacuum pump 2 is started to perform vacuumizing regeneration treatment on the adsorption tank 1 saturated in adsorption, and oil gas is regenerated from the adsorption material and then sent to a subsequent absorption tower for absorption; the absorption tower is also connected with an absorption oil storage tank through two pipeline pumps, wherein the lean oil pump sends absorption oil into the tower top to absorb regenerated oil gas, and the absorbed rich oil is pumped back to the storage tank through the rich oil pump.
Compared with the conventional adsorption method oil gas recovery, the invention utilizes the buried storage tank 4 of the gas station to replace the absorption tower of the conventional adsorption method oil gas recovery device 10 to complete the absorption link, and does not need to be provided with a lean oil pump and a rich oil pump, thereby having less equipment investment and greatly reducing the occupied area.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (7)
1. A tertiary oil gas recovery device of a gas station is characterized by comprising two adsorption tanks arranged in parallel, a vacuum pump connected with the two adsorption tanks, and a buried storage tank connected with the vacuum pump; the bottom of two adsorption tanks is connected with two inlet branch pipelines of inlet line respectively, and the bottom of two adsorption tanks still is connected with two evacuation branch pipelines of evacuation pipeline respectively, and evacuation pipeline is connected with the vacuum pump, still be provided with on the vacuum pump and the regeneration trachea line of burying the ground storage tank and be used for preliminary radiating radiator, insert the regeneration trachea line one end of burying in the ground storage tank still be connected with gas distributor, and the oil gas discharge pipeline at burying the ground storage tank top still is connected with inlet line.
2. The apparatus of claim 1, wherein two of said canisters are continuously operated alternately, and one canister is in an adsorption state while the other canister is in a regeneration state.
3. The tertiary oil and gas recovery device of a gas station as claimed in claim 2, wherein the tops of the two adsorption tanks are connected with an exhaust pipeline, and an exhaust valve and a purge valve are further installed on the exhaust pipeline.
4. The tertiary oil and gas recovery device of a gas station as claimed in claim 3, wherein two adsorption tanks are filled with activated carbon for oil and gas recovery.
5. The tertiary oil and gas recovery device of a gas station as claimed in claim 1, wherein electrically controlled valves are provided on both of the branch inlet lines and both of the branch vacuum lines.
6. The tertiary oil and gas recovery device for the gas station as claimed in claim 1, wherein the vacuum pump is a scroll vacuum pump, and the adsorption tank is vacuumized to realize a high-concentration oil and gas regeneration process.
7. A service station tertiary oil gas recovery device as claimed in claim 1, wherein said gas distributor is submerged below the oil level in said buried storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911020379.1A CN110585851A (en) | 2019-10-25 | 2019-10-25 | Filling station's cubic vapor recovery system device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911020379.1A CN110585851A (en) | 2019-10-25 | 2019-10-25 | Filling station's cubic vapor recovery system device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110585851A true CN110585851A (en) | 2019-12-20 |
Family
ID=68850376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911020379.1A Pending CN110585851A (en) | 2019-10-25 | 2019-10-25 | Filling station's cubic vapor recovery system device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110585851A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167771A (en) * | 2020-02-17 | 2020-05-19 | 青岛诺诚化学品安全科技有限公司 | Online closed cleaning and detecting system and technological method for flame arrester |
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-
2019
- 2019-10-25 CN CN201911020379.1A patent/CN110585851A/en active Pending
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| CN111167771A (en) * | 2020-02-17 | 2020-05-19 | 青岛诺诚化学品安全科技有限公司 | Online closed cleaning and detecting system and technological method for flame arrester |
| CN111167771B (en) * | 2020-02-17 | 2023-06-02 | 青岛诺诚化学品安全科技有限公司 | System and process method for online airtight cleaning and detection of flame arresters |
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Effective date of registration: 20221024 Address after: No. 22, Chaoyangmen street, Chaoyang District, Beijing 100020 Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Applicant after: Sinopec Safety Engineering Research Institute Co.,Ltd. Applicant after: QINGDAO NUOCHENG CHEMICAL SAFETY TECHNOLOGY CO.,LTD. Address before: 266216 No.7 Shanxiu Road, Huashan Town, Jimo City, Qingdao City, Shandong Province Applicant before: QINGDAO NUOCHENG CHEMICAL SAFETY TECHNOLOGY CO.,LTD. |