CN213790845U - Membrane separation type oil gas recovery equipment - Google Patents
Membrane separation type oil gas recovery equipment Download PDFInfo
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- CN213790845U CN213790845U CN202021898971.XU CN202021898971U CN213790845U CN 213790845 U CN213790845 U CN 213790845U CN 202021898971 U CN202021898971 U CN 202021898971U CN 213790845 U CN213790845 U CN 213790845U
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Abstract
The utility model discloses a membrane separation type oil gas recovery device, which comprises a shell; a monitoring system, a control system and a separation system are arranged in the shell; the separation system comprises a compressor, a condenser, a membrane separation device and a vacuum pump matched with the membrane separation device; the air inlet of the condenser is connected with the compressor, and the air outlet of the condenser is connected with the membrane separation device; the condenser is provided with an oil outlet; when the monitoring system monitors that the pressure of the underground oil storage tank exceeds a set value, oil gas in the underground oil storage tank is separated into oil and clean air through the separation system, wherein the oil is recycled, and the clean air is directly discharged into the atmosphere; the requirement on the condensing temperature of the condensing machine is reduced, the condensing machine adopts a normal-temperature condenser for condensation, the problem of frosting does not exist, defrosting is not needed, and the system can continuously run; the purpose of continuously recovering oil gas is achieved, and the air emission standard can be guaranteed to be met; and the equipment consumes little energy, reduces energy consumption and reduces cost at the same time.
Description
Technical Field
The utility model relates to an oil gas recovery equipment technical field, more specifically say, it relates to a membrane separation type oil gas recovery equipment.
Background
The petrol that filling station is used for the car to refuel need be stored earlier in underground oil storage tank, and the oil gas can be volatilized to the oil of storing in the oil storage tank, if oil gas does not pass through collecting and handling, can the contaminated air in giving off the atmosphere.
The existing device for recovering oil gas is a condensation method recovery device, and the recovery method comprises the steps of precooling, mechanical refrigeration, liquid nitrogen refrigeration and the like to recover the oil gas;
however, the working temperature of a cryogenic device for refrigerating by liquid nitrogen can reach minus 184 ℃, because the refrigerating temperature of the device is lower, oil gas is condensed into liquid for recycling by taking away heat on metal fin surfaces of a condenser, because water vapor is inevitably taken in the oil gas, frost is generated on fin surfaces of cold and heat exchange, the heat exchange efficiency is influenced by excessive frost, and therefore the condenser needs to be defrosted regularly; generally, the condensed oil gas recovery device is used for 24 hours, and needs to be stopped for 1 to 2 hours to carry out defrosting operation; during defrosting, the condensing system stops refrigerating, so that oil gas cannot be condensed and recovered, and the oil gas cannot be continuously recovered, so that the oil gas is discharged into the atmosphere during defrosting to pollute the air; and the liquid nitrogen refrigeration can greatly increase the equipment cost and the equipment power consumption, and has a serious energy consumption problem at the same time.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model aims to provide a membrane separation type oil gas recovery device;
in order to achieve the above purpose, the utility model provides a following technical scheme:
a membrane separation type oil gas recovery apparatus includes a housing; a monitoring system, a control system and a separation system are arranged in the shell;
the separation system comprises a compressor, a condenser, a membrane separation device and a vacuum pump matched with the membrane separation device;
the air inlet of the condenser is connected with the compressor, and the air outlet of the condenser is connected with the membrane separation device; the condenser is provided with an oil outlet;
when the monitoring system monitors that the pressure of the underground oil storage tank exceeds a set value, oil gas in the underground oil storage tank sequentially enters the compressor and the condenser and is separated into heavy component oil gas and light component oil gas by the condenser;
the heavy component oil gas is condensed into liquid gasoline by the condenser and discharged from the oil outlet, the light component oil gas is discharged from the air outlet and enters the membrane separation device, and the membrane separation device separates the light component oil gas into oil and clean air under the action of the vacuum pump.
The utility model discloses further set up: a small oil storage tank is mounted in the shell and connected with the oil outlet, and liquid gasoline discharged from the oil outlet is stored in the small oil storage tank.
The utility model discloses further set up: the monitoring system is provided with a display instrument, and the display instrument displays the pressure value in the oil storage tank.
The utility model discloses beneficial effect: the oil gas is separated twice by combining the condensing machine and the membrane separation device, the separated oil gas is recovered, and the separated clean air is discharged into the atmosphere, so that the oil gas in the underground oil storage tank is recovered in time; the requirement on the condensing temperature of the condensing machine is reduced, the condensing machine adopts a normal-temperature condenser for condensation, the problem of frosting does not exist, defrosting is not needed, and the system can continuously run; in addition, a membrane separation device is adopted for light component oil gas, and oil in the light component oil gas is better separated from air by utilizing the difference of permeability of different gases under the action of pressure; the purpose of continuously recovering oil gas is achieved, air discharged into the atmosphere can be cleaner, and the emission standard is guaranteed to be met; and the equipment consumes little energy, reduces energy consumption and reduces cost at the same time.
Drawings
Fig. 1 is a schematic structural diagram of a membrane separation type oil-gas recovery apparatus according to the present invention;
fig. 2 is a schematic structural diagram of a housing of a membrane separation type oil-gas recovery apparatus according to the present invention;
description of reference numerals: 1. a housing; 2. a display instrument; 3. a control system; 4. a separation system; 41. A compressor; 42. a condenser; 43. a membrane separation device; 44. a vacuum pump; 5. a small-sized oil storage tank.
Detailed Description
The embodiments of the membrane separation type oil gas recovery device of the present invention will be described in further detail with reference to fig. 1 to 2.
A membrane separation type oil gas recovery apparatus includes a housing 1; a monitoring system, a control system 3 and a separation system 4 are arranged in the shell 1;
the separation system 4 comprises a compressor 41, a condenser 42, a membrane separation device 43 and a vacuum pump 44 matched with the membrane separation device 43;
the air inlet of the condenser 42 is connected with the compressor 41, and the air outlet thereof is connected with the membrane separation device 43; the condenser 42 is provided with an oil outlet;
when the monitoring system monitors that the pressure of the underground oil storage tank exceeds a set value, the control system 3 is automatically started to enable oil gas in the underground oil storage tank to enter a compressor 41, the compressor 41 heats the oil gas, the heated oil gas enters a condenser and is separated into heavy component oil gas and light component oil gas by the condenser, and the heavy component oil gas is condensed into liquid gasoline by the condenser and is discharged from an oil outlet;
wherein the light component oil gas is discharged from the gas outlet and enters the membrane separation device 43, the membrane separation device 43 generates pressure difference on two sides of the membrane under the action of the vacuum pump 44, and the oil enters the inner side of the membrane and the air cannot pass through the membrane due to different trafficability of the oil and the air under the action of the pressure and is arranged on the outer side of the membrane, so that the separation of the oil and the air is realized;
the membrane separation unit 43 separates the light component oil gas into oil and clean air, wherein the oil is directly returned to the underground oil storage tank by the vacuum pump 44, and the clean air is discharged to the atmosphere; the separation and recovery are circularly operated; the oil gas recovery is realized.
The condenser 42 is combined with the membrane separation device 43 to separate oil gas for two times, the separated oil gas is recovered, and the separated clean air is discharged into the atmosphere, so that the oil gas in the underground oil storage tank is timely recovered; the requirement on the condensing temperature of the condenser 42 is reduced, the condenser 42 adopts a normal-temperature condenser for condensation, the frosting problem does not exist, and the circulating and continuous operation is realized; defrosting is not required; the purpose of continuously recovering oil gas is achieved, air discharged into the atmosphere can be cleaner, and the emission standard is guaranteed to be met; and the equipment consumes little energy, reduces energy consumption and reduces cost at the same time.
Wherein install small-size oil storage tank 5 in the shell 1, small-size oil storage tank 5 is connected with the oil-out, and wherein the liquid petrol that discharges from the oil-out is stored in small-size oil storage tank 5, is convenient for retrieve the liquid petrol that separates from the oil gas, recycles.
The monitoring system is provided with a display instrument 2, and the display instrument 2 displays the pressure value in the oil storage tank; the pressure in the underground oil storage tank can be intuitively observed in real time, and the oil gas content in the underground oil storage tank can be better monitored.
The above is only the preferred embodiment of the present invention, the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention; it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. A membrane separation type oil gas recovery apparatus includes a housing; the method is characterized in that: a monitoring system, a control system and a separation system are arranged in the shell;
the separation system comprises a compressor, a condenser, a membrane separation device and a vacuum pump matched with the membrane separation device;
the air inlet of the condenser is connected with the compressor, and the air outlet of the condenser is connected with the membrane separation device; the condenser is provided with an oil outlet;
when the monitoring system monitors that the pressure of the underground oil storage tank exceeds a set value, oil gas in the underground oil storage tank sequentially enters the compressor and the condenser and is separated into heavy component oil gas and light component oil gas by the condenser;
the heavy component oil gas is condensed into liquid gasoline by the condenser and discharged from the oil outlet, the light component oil gas is discharged from the air outlet and enters the membrane separation device, and the membrane separation device separates the light component oil gas into oil and clean air under the action of the vacuum pump.
2. The membrane separation type oil gas recovery apparatus according to claim 1, wherein: a small oil storage tank is mounted in the shell and connected with the oil outlet, and liquid gasoline discharged from the oil outlet is stored in the small oil storage tank.
3. The membrane separation type oil gas recovery apparatus according to claim 1 or 2, wherein: the monitoring system is provided with a display instrument, and the display instrument displays the pressure value in the oil storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021898971.XU CN213790845U (en) | 2020-09-03 | 2020-09-03 | Membrane separation type oil gas recovery equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021898971.XU CN213790845U (en) | 2020-09-03 | 2020-09-03 | Membrane separation type oil gas recovery equipment |
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| Publication Number | Publication Date |
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| CN213790845U true CN213790845U (en) | 2021-07-27 |
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| CN202021898971.XU Active CN213790845U (en) | 2020-09-03 | 2020-09-03 | Membrane separation type oil gas recovery equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570170A (en) * | 2022-04-15 | 2022-06-03 | 安徽德明石油化工设备有限公司 | Oil gas recovery device with oil return function for oil depot membrane separation |
| CN114768460A (en) * | 2022-05-19 | 2022-07-22 | 安徽德明石油化工设备有限公司 | Oil gas recovery device with oil return function for efficient membrane separation of gas station |
-
2020
- 2020-09-03 CN CN202021898971.XU patent/CN213790845U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570170A (en) * | 2022-04-15 | 2022-06-03 | 安徽德明石油化工设备有限公司 | Oil gas recovery device with oil return function for oil depot membrane separation |
| CN114768460A (en) * | 2022-05-19 | 2022-07-22 | 安徽德明石油化工设备有限公司 | Oil gas recovery device with oil return function for efficient membrane separation of gas station |
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