CN209009342U - A kind of gas of oil storage tank recovery system of recyclable nitrogen - Google Patents
A kind of gas of oil storage tank recovery system of recyclable nitrogen Download PDFInfo
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- CN209009342U CN209009342U CN201821419376.6U CN201821419376U CN209009342U CN 209009342 U CN209009342 U CN 209009342U CN 201821419376 U CN201821419376 U CN 201821419376U CN 209009342 U CN209009342 U CN 209009342U
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Abstract
The utility model discloses a kind of gas of oil storage tank recovery systems of recyclable nitrogen, including storage tank, air blower, membrane separator, device for recovering oil and gas, liquid oil recovery tank, deaerating plant, nitrogen recycling tank；The connection of the air inlet of storage tank and air blower, the air outlet of air blower and the air inlet of membrane separator connect；First gas outlet of membrane separator and the air inlet of device for recovering oil and gas connect, and the leakage fluid dram of device for recovering oil and gas is connect with liquid oil recovery tank；Second gas outlet of membrane separator and the air inlet of deaerating plant connect, and the gas outlet of deaerating plant is connect with the air inlet of nitrogen recycling tank, and the gas outlet of nitrogen recycling tank is connect with storage tank.First oil gas-air is separated in membrane separator, the oil gas after separation, which enters in device for recovering oil and gas, to be handled, and the treating capacity of device for recovering oil and gas is greatly reduced；Air purified after deaerating plant after nitrogen, recycled into storage tank, reduce nitrogen consuming cost.
Description
Technical field
The utility model relates to petroleum, petrochemical industry oil storage and transportation safety and environmental protection field, and in particular to a kind of recyclable nitrogen
Gas of oil storage tank recovery system.
Background technique
Petroleum vapor recovery refers to the gas that petroleum volatilizees to petroleum and products thereof in processing, storage and transportation, sale and use process
Body is collected, handles, to avoid the loss of safety accident, atmosphere pollution and oil product.The effect of storage tank nitrogen envelope is primarily to anti-
Only there is negative pressure and from breather valve incoming call air in storage tank, to keep micro-positive pressure in storage tank, to avoid because of incoming call large quantity of air pair
Device for recovering oil and gas bring security threat.After device for recovering oil and gas is handled, liquid oil flows into organic materials recycling can, nitrogen
Gas is directly discharged to outdoor, also needs to be passed through nitrogen in storage tank in this way, causes greatly to waste, and increases cost.
The Chinese patent of Publication No. CN 207375096U discloses a kind of Fuel Tanking Unit of low nitrogen consumption, including storage
Tank, oil gas blower, device for recovering oil and gas, organic materials recycling can, the first deaerating plant and buffer gas tank, will be organic in oil gas
Material is recycled, and the nitrogen in oil gas is recycled after deaerating plant is handled, and significantly reduces nitrogen consumption.Storage
The oil gas evaporated in tank about 95% is nitrogen, is all that direct calculate is waved in existing device for recovering oil and gas treating capacity calculating
The amount of gas is issued, nitrogen amount also counts.Although the displosure patent carries out recycling and reusing to nitrogen, but by oil gas
And a large amount of nitrogen wherein contained are passed through in device for recovering oil and gas are handled together, lead to the processing there are device for recovering oil and gas
The problems such as measuring big, device for recovering oil and gas scale and taking up a large area.
Summary of the invention
To solve the deficiencies in the prior art, the utility model provides a kind of gas of oil storage tank recovery system of recyclable nitrogen,
Nitrogen recycling can be recycled while reducing device for recovering oil and gas treating capacity.
In order to achieve the above objectives, the utility model adopts the following technical solutions: a kind of s.t.o of recyclable nitrogen
Gas recovery system, including storage tank, air blower, membrane separator, device for recovering oil and gas, liquid oil recovery tank, deaerating plant, nitrogen recycling
Tank；The connection of the air inlet of the storage tank and air blower, the air outlet of the air blower and the air inlet of membrane separator connect；It is described
Membrane separator includes the first gas outlet and the second gas outlet, the first gas outlet and the device for recovering oil and gas of the membrane separator
Air inlet connection, the leakage fluid dram of the device for recovering oil and gas connect with the liquid oil recovery tank；The second of the membrane separator
Gas outlet is connect with the air inlet of the deaerating plant, the air inlet of the gas outlet of the deaerating plant and the nitrogen recycling tank
Connection, the gas outlet of the nitrogen recycling tank is connect with the storage tank.
Further, the membrane separator is using oil gas infiltration type membrane separator.
Further, the membrane separator is using oil gas retention type membrane separator.
Further, the deaerating plant is Vacuum Pressure Swing Adsorption deaerating plant.
Further, the deaerating plant is equipped with oxygen rich air discharge outlet.
It further, further include nitrogen cylinder, the nitrogen cylinder is connect with the storage tank, and is connected in the nitrogen cylinder and storage tank
Adapter tube road is equipped with regulating valve.
Having the beneficial effect that for the utility model first separates oil gas-air gaseous mixture in membrane separator, after separation
Oil gas enter in device for recovering oil and gas and handle, greatly reduce the treating capacity of device for recovering oil and gas, corresponding oil gas returns
The treatment scale of receiving apparatus reduces, occupied area reduces, investment and operation energy consumption reduce；About 95% body of the accounting being separated
The air of fraction passes through deaerating plant, and the nitrogen after purify recycles into storage tank, reduce nitrogen consume at
This.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the gas of oil storage tank recovery system of recyclable nitrogen of the utility model.
Attached meaning marked in the figure is as follows: 1, storage tank, 2, air blower, 3, membrane separator, 4, device for recovering oil and gas, 5, liquid oil
Recycling can, 6, deaerating plant, 7, nitrogen recycling tank, 8, oxygen rich air discharge outlet, 9, nitrogen cylinder, 10, regulating valve.
Specific embodiment
Specific introduce is made to the utility model below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of gas of oil storage tank recovery system of recyclable nitrogen, including storage tank 1, air blower 2, membrane separator
3, device for recovering oil and gas 4, liquid oil recovery tank 5, deaerating plant 6, nitrogen recycling tank 7.
Storage tank 1 is connect with the air inlet of air blower 2, and the air outlet of air blower 2 is connect with the air inlet of membrane separator 3；Film
Separator 3 includes the first gas outlet and the second gas outlet, the first gas outlet of membrane separator 3 and the air inlet of device for recovering oil and gas 4
Mouth connection, the leakage fluid dram of device for recovering oil and gas 4 are connect with liquid oil recovery tank 5.
Second gas outlet of membrane separator 3 is connect with the air inlet of deaerating plant 6, the gas outlet of deaerating plant 6 and nitrogen
The air inlet of recycling can 7 connects, and the gas outlet of nitrogen recycling tank 7 is connect with storage tank 1.
Membrane separator 3 can use oil gas infiltration type membrane separator or oil gas retention type membrane separator in the present invention
It is any.Oil gas infiltration type membrane separator is for separation oil and gas-air Mixture principle: based on seperation film to gas
The osmotic coefficient ratio small size air molecule of permeability, large volume oil gas molecule is high, and Preferential adsorption is dissolved in film surface and separates
Out, air is trapped.Oil gas retention type membrane separator is for separation oil and gas-air Mixture principle: being expanded based on dissolution
The mechanism of dissipating, small size air molecule is contacted with seperation film to be dissolved in film surface, is generated concentration gradient in film both side surface, is made air
Molecule is spread in film to the film other side, and finally from film other side surface dissociation, air is preferentially penetrated and separated, and oil gas is big
Molecule is trapped.
The partial pressure difference of seperation film two sides gas is the driving force of UF membrane, therefore only keeps the gas pressure of film per-meate side
Lower than the gas pressure of film air inlet side, transmitting of the gas by film just may be implemented, which can use in film air inlet side
Vacuum pump is arranged in film per-meate side (going out gas side) to realize in setting air blower, the two can also be used in combination sometimes, not
Limit realizes that pressure difference drives using air blower 2 in this present embodiment.
Deaerating plant 6 is Vacuum Pressure Swing Adsorption deaerating plant.Deaerating plant 6 is equipped with oxygen rich air discharge outlet 8, from UF membrane
The air separated in device 3 obtains the nitrogen that purity is greater than 98% after deaerating plant 6.
In order to reach better nitrogen envelope effect, the utility model further includes nitrogen cylinder 9, and nitrogen cylinder 9 is connect with storage tank 1, and
It is equipped with regulating valve 10 on the pipeline that nitrogen cylinder 9 is connect with storage tank 1, in addition nitrogen is filled into storage tank 1 by nitrogen cylinder 9.
The specific implementation process of the utility model is: oil gas-air in storage tank 1 is under the action of air blower 2, into film
In separator 3, by the separating treatment of membrane separator 3, generate two strands of air-flows: one is oil gas, at device for recovering oil and gas 4
After reason, fluid organic material material enters in liquid oil recovery tank 5；Another stock is air (mostly nitrogen), into deaerating plant 6
Nitrogen of the bulk purity greater than 98% is obtained after middle deoxygenation to be then recycled into storage tank 1 and provide for it into nitrogen recycling tank 7
Nitrogen source.Oxygen can be directly discharged to outdoor from oxygen rich air discharge outlet 8.When requiring supplementation with nitrogen source, it can be adjusted by adjusting
Section valve 10 fills into nitrogen in storage tank from nitrogen cylinder 9, to reach better nitrogen envelope effect.
Different from the prior art, the utility model first separates oil gas-air in membrane separator, the oil after separation
Gas, which enters in device for recovering oil and gas, to be handled, and the treating capacity of device for recovering oil and gas is greatly reduced；Air is after deaerating plant
Nitrogen after being purified, recycles into storage tank.
The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that above-described embodiment does not limit the utility model in any form, it is all by the way of equivalent substitution or equivalent transformation
Technical solution obtained, all falls in the protection scope of the utility model.
Claims (6)
1. a kind of gas of oil storage tank recovery system of recyclable nitrogen, which is characterized in that including storage tank (1), air blower (2), film point
From device (3), device for recovering oil and gas (4), liquid oil recovery tank (5), deaerating plant (6), nitrogen recycling tank (7)；The storage tank (1) with
The air inlet of air blower (2) connects, and the air outlet of the air blower (2) is connect with the air inlet of membrane separator (3)；The film point
It include the first gas outlet and the second gas outlet from device (3), the first gas outlet of the membrane separator (3) and the petroleum vapor recovery fill
The air inlet connection of (4) is set, the leakage fluid dram of the device for recovering oil and gas (4) is connect with the liquid oil recovery tank (5)；The film point
The second gas outlet from device (3) is connect with the air inlet of the deaerating plant (6), the gas outlet of the deaerating plant (6) and institute
The air inlet connection of nitrogen recycling tank (7) is stated, the gas outlet of the nitrogen recycling tank (7) is connect with the storage tank (1).
2. a kind of gas of oil storage tank recovery system of recyclable nitrogen according to claim 1, which is characterized in that the film point
From device (3) using oil gas infiltration type membrane separator.
3. a kind of gas of oil storage tank recovery system of recyclable nitrogen according to claim 1, which is characterized in that the film point
From device (3) using oil gas retention type membrane separator.
4. a kind of gas of oil storage tank recovery system of recyclable nitrogen according to claim 1, which is characterized in that the deoxygenation
Device (6) is Vacuum Pressure Swing Adsorption deaerating plant.
5. a kind of gas of oil storage tank recovery system of recyclable nitrogen according to claim 1, which is characterized in that the deoxygenation
Device (6) is equipped with oxygen rich air discharge outlet (8).
6. a kind of gas of oil storage tank recovery system of recyclable nitrogen according to claim 1, which is characterized in that further include nitrogen
Gas cylinder (9), the nitrogen cylinder (9) connect with the storage tank (1), and set on the nitrogen cylinder (9) and storage tank (1) connecting pipe
There are regulating valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821419376.6U CN209009342U (en) | 2018-08-31 | 2018-08-31 | A kind of gas of oil storage tank recovery system of recyclable nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821419376.6U CN209009342U (en) | 2018-08-31 | 2018-08-31 | A kind of gas of oil storage tank recovery system of recyclable nitrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209009342U true CN209009342U (en) | 2019-06-21 |
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ID=66832103
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821419376.6U Active CN209009342U (en) | 2018-08-31 | 2018-08-31 | A kind of gas of oil storage tank recovery system of recyclable nitrogen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110420536A (en) * | 2019-08-27 | 2019-11-08 | 南京都乐制冷设备有限公司 | Tank deck VOCs recycling and nitrogen reutilization system and method |
-
2018
- 2018-08-31 CN CN201821419376.6U patent/CN209009342U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110420536A (en) * | 2019-08-27 | 2019-11-08 | 南京都乐制冷设备有限公司 | Tank deck VOCs recycling and nitrogen reutilization system and method |
| CN110420536B (en) * | 2019-08-27 | 2021-06-25 | 南京都乐制冷设备有限公司 | System and method for recycling VOCs (volatile organic compounds) on tank top and recycling nitrogen |
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