CN212383452U - Oil gas recovery device by organic membrane separation method - Google Patents
Oil gas recovery device by organic membrane separation method Download PDFInfo
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- CN212383452U CN212383452U CN202020975159.6U CN202020975159U CN212383452U CN 212383452 U CN212383452 U CN 212383452U CN 202020975159 U CN202020975159 U CN 202020975159U CN 212383452 U CN212383452 U CN 212383452U
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Abstract
An oil-gas recovery device adopting an organic membrane separation method comprises a buffer tank, a gas-liquid separator, a heat exchanger and an oil storage tank, wherein an inlet of the buffer tank is communicated with an external oil-gas main pipeline, an inlet of the gas-liquid separator is communicated with an outlet of the buffer tank through an oil-gas compressor unit, a liquid phase outlet of the gas-liquid separator is communicated with an inlet of the oil storage tank, a gas phase outlet of the gas-liquid separator is communicated with a hot inlet of the heat exchanger, a hot outlet of the heat exchanger is communicated with an inlet of the oil storage tank, and a cooling device is communicated between a cold inlet and a; an exhaust port is also arranged on the heat chamber of the heat exchanger, and a membrane component for further recovering oil gas is communicated with the exhaust port; the outlet at the permeation side of the membrane module is communicated with an external oil-gas main pipeline through a first vacuum pump, and the exhaust port of the membrane module is communicated with an adsorption device. The device is safe and environment-friendly, and economic benefits of reducing volatilization loss of oil products, environmental benefits of blue sky green water and safety benefits of loading and unloading processes can be obtained through the arrangement of the membrane component.
Description
Technical Field
The utility model relates to an oil gas recovery technical field, especially an organic membrane separation method oil gas recovery device.
Background
A large amount of volatile components (called oil gas) exist in finished oil (gasoline, diesel oil, kerosene and the like) or chemical products, and the generated volatile components can volatilize and leak in multiple links of storage, transportation, loading and unloading and the like. Under some occasions, the oil gas leakage amount is large, for example, when a loading platform of a wharf refinery or a turnover oil depot is loaded, the oil gas volatilized from an oil filling port of a tank car has the concentration of about 10% -45% according to the difference of the air temperature and the flow rate during oil filling.
The volatile oil gas mainly contains poisonous and harmful organic components such as ethane, propane, butane, pentane, heptane, octane, benzene and the like, the flammable organic gases are dispersed in the air to cause air pollution and harm human health, fire and explosion accidents are easy to happen, potential safety hazards exist, the loss of the volatile oil gas accounts for about 1% of the total amount of the finished oil according to statistics of relevant scientific research institutions, and the economic loss caused by the volatile oil gas is considerable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to prior art not enough, provide a reasonable in design, safe and reliable, can carry out recovery processing's organic membrane separation method vapor recovery system device to volatile gaseous organic component in pier or turnover storehouse loading and unloading link.
The technical problem to be solved by the utility model is realized through the following technical scheme. The utility model relates to an organic membrane separation method vapor recovery unit, the device includes buffer tank, vapour and liquid separator, heat exchanger and oil storage tank, the import and the outside oil gas main line of buffer tank communicate, the import of vapour and liquid separator communicates with the export of buffer tank through the oil gas compressor unit, the liquid phase export of vapour and liquid separator communicates with the import of oil storage tank, the gas phase export of vapour and liquid separator communicates with the hot import of heat exchanger, the hot export of heat exchanger communicates with the import of oil storage tank, the intercommunication has cooling device between the cold import and the cold export of heat exchanger; an exhaust port is also arranged on the heat chamber of the heat exchanger, and a membrane component used for further recovering oil gas is communicated with the exhaust port.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above organic membrane separation method vapor recovery system device, the infiltration side export of membrane module is through first vacuum pump and outside oil gas main pipe import intercommunication, and the discharge port intercommunication of membrane module has adsorption equipment, and adsorption equipment's desorption discharge port passes through second vacuum pump and outside oil gas pipeline intercommunication, and adsorption equipment's delivery outlet intercommunication has exhaust duct, exhaust duct and outside aiutage intercommunication.
The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above organic membrane separation method vapor recovery system device, adsorption equipment is provided with 2, 2 parallelly connected settings of adsorption equipment.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above organic membrane separation method vapor recovery system device, adsorption equipment is the activated carbon adsorption jar.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above organic membrane separation method vapor recovery system device, still communicate urgent discharge pipe way on the outside vapor pipeline of intercommunication department of buffer tank and outside oil gas main line, install urgent control valve on urgent discharge pipe way.
The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above organic membrane separation method vapor recovery system device, vapor compression unit includes the vapor compression system ware of two parallelly connected settings.
The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above organic membrane separation method vapor recovery unit, still be provided with the oil-out on the oil storage tank, the bottom of oil storage tank is provided with the drain, and the bottom of buffer tank still is provided with the export of liquefied gas, and oil-out department intercommunication has oil drain pipe, and drain and liquefied gas exit department intercommunication have sewage pipes.
The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above organic membrane separation method vapor recovery system device, cooling device is compressor.
Compared with the prior art, the utility model is used for recovering and treating the volatile gas organic components in the loading and unloading links of wharfs or turnover warehouses, the input waste gas containing high-concentration oil gas is firstly stabilized through the buffer tank and then compressed through the oil gas compressor unit, then the gas-liquid separator is input for gas-liquid separation, the separated liquid is sent into an oil storage tank, the separated gas is sent into a heat exchanger for heat exchange and temperature reduction, the liquid generated by temperature reduction and liquefaction is sent into the oil storage tank, the residual gas is sent into a membrane component for filtration, the filtered gas is sent back to an oil-gas main pipeline for recycling treatment again, the residual gas is sent into an adsorption device for adsorption treatment, the adsorbed gas is sent back to the oil-gas main pipeline for recycling treatment again, and the residual gas is discharged at high altitude, thereby effectively and reasonably achieving the processing efficiency and non-methane emission index of the oil gas recovery device required by the latest national standard. The device is energy-saving, environment-friendly, safe and reliable, and can obtain economic benefits of reducing the volatilization loss of oil products, environmental benefits of blue sky and green water and safety benefits of loading and unloading processes through the arrangement of the membrane component.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the oil-gas recovery device by organic membrane separation comprises a buffer tank 1, a gas-liquid separator 4, a heat exchanger 5 and an oil storage tank 6, wherein an inlet of the buffer tank 1 is communicated with an external oil-gas main pipeline 2, an inlet of the gas-liquid separator 4 is communicated with an outlet of the buffer tank 1 through an oil-gas compressor unit 3, a liquid phase outlet of the gas-liquid separator 4 is communicated with an inlet of the oil storage tank 6, a gas phase outlet of the gas-liquid separator 4 is communicated with a heat inlet of the heat exchanger 5, a heat outlet of the heat exchanger 5 is communicated with an inlet of the oil storage tank 6, and a cooling device 7 is communicated between a cold inlet and a cold outlet; an exhaust port is also arranged on the heat chamber of the heat exchanger 5, and a membrane module 8 for further recovering oil gas is communicated with the exhaust port. The buffer tank 1 is used for stabilizing the pressure of the output waste gas; the gas-liquid separator 4 is used for separating oil gas and moisture in the waste gas, so that liquid phase substances are prevented from entering downstream and damaging downstream equipment, and is mainly used as equipment for improving the safe operation of the membrane component 8; the heat exchanger 5 adopts a shell-and-tube heat exchanger 5, so that ice blockage can be effectively avoided, the heat exchange efficiency is improved, and the maintenance is convenient; the membrane module 8 adopts the membrane module 8 in the prior art, which is a practical device containing membranes and supporting structures thereof in various specifications, and a single module or a plurality of modules can be assembled into a membrane separation device, the membrane module 8 adopted in the application is a roll-type membrane module 8, so that the maintenance is convenient, the safety performance is improved, and the equipment arrangement simultaneously reduces the occupied area; fire arresters are further installed on the external oil and gas main pipeline 2, particularly the inlet and the outlet of the external oil and gas main pipeline 2, and the safety performance of the whole device is improved.
The outlet of the permeation side of the membrane module 8 is communicated with the external oil gas main pipeline 2 through a first vacuum pump 9, the discharge port of the membrane module 8 is communicated with an adsorption device 10, the desorption discharge port of the adsorption device 10 is communicated with the external oil gas pipeline through a second vacuum pump 11, the output port of the adsorption device 10 is communicated with an exhaust pipeline 14, and the exhaust pipeline 14 is communicated with an external exhaust funnel. The membrane module 8 and the adsorption device 10 are used in cooperation, and are used for gradually extracting high-concentration oil gas in the waste gas, so that the remaining waste gas meets the emission index, the high-altitude standard emission is carried out through the exhaust funnel, and the height of the exhaust funnel is about 15 m; the membrane module 8 is used for filtering the waste gas cooled by the heat exchanger 5, and high-concentration oil gas in the waste gas passes through the membrane module 8, returns to the external oil gas main pipeline 2 through the first vacuum pump 9, and enters the buffer tank 1 again for recycling treatment; the remaining waste gas is sent into an adsorption device 10 for adsorption treatment, the adsorption device 10 further adsorbs and recovers oil gas with relatively high concentration in the waste gas, the oil gas returns to an external oil gas main pipeline 2 through a second vacuum pump 11, and the oil gas enters a buffer tank 1 again for recovery treatment; the concentration of the waste gas after adsorption treatment is reduced, the waste gas meets the emission standard, and the waste gas is sent into an external exhaust funnel through an exhaust pipeline 14 to be discharged; the first vacuum pump 9 is used for improving the permeation and separation efficiency of the membrane module 8; the adsorption device 10 and the second vacuum pump 11 are used for retreatment of the exhaust gas treated by the membrane module 8, so that the exhaust gas treated by the membrane module 8 can reach the emission standard.
The adsorption device 10 is an activated carbon adsorption tank. The active carbon adsorption tank adopts the active carbon adsorption tank in the prior art, and granular active carbon is adopted in a fixed bed mode to adsorb organic solutes (including chromaticity, smell and the like) in the treated object, so that the treated object is purified; the application adopts the activated carbon adsorption tank to adsorb the waste gas through the membrane module 8 processing, adsorbs again, retrieves the oil gas that includes wherein.
An emergency discharge pipeline 15 is further communicated with the external oil gas pipeline at the communication position of the buffer tank 1 and the external oil gas main pipeline 2, and an emergency control valve 16 is installed on the emergency discharge pipeline 15. The emergency discharge pipeline 15 is used in the case of shutdown of the device, the emergency control valve 16 is opened, and oil and gas in the external oil and gas main pipeline 2 are directly discharged through the emergency discharge pipeline 15; secondly, the emergency discharge pipeline 15 is communicated with the exhaust pipeline 14, and oil and gas can be discharged from high altitude.
The oil-gas compressor unit 3 comprises two oil-gas compressors which are arranged in parallel. The oil gas compressor adopts a gas compressor in the prior art, is a power device for converting mechanical energy into gas pressure energy, is used for compressing oil gas, and generally compresses the oil gas to 0.8MPa, and simultaneously adopts a water-cooling self-circulation cooling system, so that on one hand, a natural water cooling device 7 is used as a cold source to cool the compressed oil gas to about 40 ℃, and on the other hand, the oil gas compressor is favorable for being used under the condition that a wharf or a turnover warehouse has no circulating water public engineering; the two oil-gas compressors are arranged in parallel, so that the running cost can be reduced, and the operation elasticity range is greatly improved.
The oil storage tank 6 is also provided with an oil outlet for outputting the recovered liquid-phase oil outwards, and the bottom of the oil storage tank 6 is provided with a drain outlet for discharging the wastewater at the bottom of the tank; the bottom of the buffer tank 1 is also provided with a liquefied water vapor outlet for discharging liquefied water vapor in the buffer tank 1, an oil outlet is communicated with an oil discharge pipeline 12, and a drain outlet and the liquefied water vapor outlet are communicated with a drain pipeline 13.
The cooling device 7 is a refrigeration compressor. The refrigeration compressor in the prior art is adopted, so that the refrigerant can be increased from low pressure to high pressure, and the refrigerant continuously and circularly flows, so that the system continuously discharges internal heat to the environment with the temperature higher than the temperature of the system; the utility model provides a supercooled water that uses compressor output is as 5 cold source media of heat exchanger, cools down the waste gas in the heat exchanger 5, and this mode can improve security performance and heat exchange efficiency.
An oil gas recovery method by an organic membrane separation method comprises the following steps:
(1) waste gas containing high-concentration oil gas enters a buffer tank from an oil gas main pipeline for pressure stabilization, liquefied water gas is discharged from a liquefied water gas outlet, and the rest waste gas is subjected to pressure stabilization, then is sent to an oil gas compressor unit for compression and cooling, and then is sent to a gas-liquid separator;
(2) the gas-liquid separator performs gas-liquid separation on the entering waste gas, the separated liquid is sent to the oil storage tank, and the separated gas is sent to the heat exchanger;
(3) the gas entering the heat exchanger is subjected to heat exchange and temperature reduction with a cooling device and then is divided into liquid-phase waste gas and gas-phase waste gas, the liquid-phase waste gas is sent into an oil storage tank, and the gas-phase waste gas is sent into a membrane component;
(4) after the gas-phase waste gas entering the membrane module is subjected to permeation treatment by the membrane module, the permeation gas is sent back to the oil-gas main pipeline for secondary treatment, and the residual gas is sent to an adsorption device for adsorption treatment; and after the gas adsorbed by the adsorption device is desorbed, the gas is sent back to the oil gas main pipeline for secondary treatment, and the residual gas is sent to the exhaust pipeline for high-altitude discharge.
Claims (8)
1. The oil gas recovery device by the organic membrane separation method is characterized in that: the device comprises a buffer tank, a gas-liquid separator, a heat exchanger and an oil storage tank, wherein an inlet of the buffer tank is communicated with an external oil-gas main pipeline, an inlet of the gas-liquid separator is communicated with an outlet of the buffer tank through an oil-gas compressor unit, a liquid-phase outlet of the gas-liquid separator is communicated with an inlet of the oil storage tank, a gas-phase outlet of the gas-liquid separator is communicated with a hot inlet of the heat exchanger, a hot outlet of the heat exchanger is communicated with an inlet of the oil storage tank, and a cooling device is communicated between a cold inlet and a; an exhaust port is also arranged on the heat chamber of the heat exchanger, and a membrane component used for further recovering oil gas is communicated with the exhaust port.
2. The organic membrane separation oil-gas recovery device according to claim 1, wherein: the permeation side outlet of the membrane assembly is communicated with the inlet of an external oil-gas main pipeline through a first vacuum pump, the discharge port of the membrane assembly is communicated with an adsorption device, the desorption discharge port of the adsorption device is communicated with the external oil-gas pipeline through a second vacuum pump, the output port of the adsorption device is communicated with an exhaust pipeline, and the exhaust pipeline is communicated with an external exhaust funnel.
3. The organic membrane separation oil-gas recovery device according to claim 2, wherein: the adsorption device is provided with 2, and 2 adsorption device parallelly connected settings.
4. The organic membrane separation oil-gas recovery device according to claim 3, wherein: the adsorption device is an activated carbon adsorption tank.
5. The organic membrane separation oil-gas recovery device according to claim 1, wherein: an emergency discharge pipeline is also communicated with the external oil-gas pipeline at the communication position of the buffer tank and the external oil-gas main pipeline, and an emergency control valve is installed on the emergency discharge pipeline.
6. The organic membrane separation oil-gas recovery device according to claim 1, wherein: the oil-gas compressor unit comprises two oil-gas compressors which are connected in parallel.
7. The organic membrane separation oil-gas recovery device according to claim 1, wherein: still be provided with the oil-out on the oil storage tank, the bottom of oil storage tank is provided with the drain, and the bottom of buffer tank still is provided with the export of liquefied gas water, and oil-out department intercommunication has oil drain pipe, and drain and liquefied gas water exit department intercommunication have sewage pipes.
8. The organic membrane separation oil-gas recovery device according to claim 1, wherein: the cooling device is a refrigeration compressor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020975159.6U CN212383452U (en) | 2020-06-02 | 2020-06-02 | Oil gas recovery device by organic membrane separation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020975159.6U CN212383452U (en) | 2020-06-02 | 2020-06-02 | Oil gas recovery device by organic membrane separation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112870908A (en) * | 2021-03-12 | 2021-06-01 | 连云港市拓普科技发展有限公司 | Sequencing batch type VOCs gas advanced treatment device and method |
| CN114768463A (en) * | 2022-03-23 | 2022-07-22 | 山东保蓝环保工程有限公司 | Multidimensional zeolite adsorption, desorption, condensation and recovery device |
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2020
- 2020-06-02 CN CN202020975159.6U patent/CN212383452U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112870908A (en) * | 2021-03-12 | 2021-06-01 | 连云港市拓普科技发展有限公司 | Sequencing batch type VOCs gas advanced treatment device and method |
| CN114768463A (en) * | 2022-03-23 | 2022-07-22 | 山东保蓝环保工程有限公司 | Multidimensional zeolite adsorption, desorption, condensation and recovery device |
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