CN108861179A - A kind of nitrogen-filled seal of volatility oil storage tank and refrigeration-type gas recovery system for oil and method - Google Patents
A kind of nitrogen-filled seal of volatility oil storage tank and refrigeration-type gas recovery system for oil and method Download PDFInfo
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- CN108861179A CN108861179A CN201810985169.5A CN201810985169A CN108861179A CN 108861179 A CN108861179 A CN 108861179A CN 201810985169 A CN201810985169 A CN 201810985169A CN 108861179 A CN108861179 A CN 108861179A
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- Prior art keywords
- oil
- nitrogen
- tank
- refrigeration
- oil tank
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 142
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 71
- 239000007789 gas Substances 0.000 title claims abstract description 47
- 238000011084 recovery Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 7
- 238000005057 refrigeration Methods 0.000 claims abstract description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000001301 oxygen Substances 0.000 claims abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 20
- 239000000945 filler Substances 0.000 claims abstract description 7
- 239000008246 gaseous mixture Substances 0.000 claims description 7
- 238000005336 cracking Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 description 8
- 238000007667 floating Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
- B65D90/30—Recovery of escaped vapours
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a kind of nitrogen-filled seals of volatility oil storage tank and refrigeration-type gas recovery system for oil, including oil tank, oil tank is respectively arranged on the left side and the right side oil filler and unloading port, oxygen sensor is equipped in oil tank, pressure sensor and temperature sensor, oxygen sensor, the output end of pressure sensor and temperature sensor is all connected to the input terminal of control computer, oil tank is connected with refrigeration device for recovering oil and gas, the pipeline to freeze between device for recovering oil and gas and oil tank is equipped with breather valve, oil tank is connected with nitrogen making machine, pipeline between oil tank and nitrogen making machine is equipped with nitrogen making machine valve, control computer output end respectively with breather valve, freeze device for recovering oil and gas, nitrogen making machine valve, nitrogen making machine connection.Beneficial effects of the present invention：Structure is simple, functional reliability is high；Low cost, good economy performance；Construction reformation is convenient；Solve safety and environmental protection existing for current oil tank and cost-effectiveness requirement.
Description
Technical field
The present invention relates to the volatile materials storage arts such as petrochemical industry oil depot, gas station, relate in particular to a kind of volatility
The nitrogen-filled seal of oil storage tank and refrigeration-type gas recovery system for oil.
Background technique
Covered floating roof tank oil in storage is generallyd use in petrochemical field at present, internal floating roof tank there are persons poorly sealed, oil gas
Leakage, there is also safety risks high there are oil gas mixing ratio with floating plate top in tank simultaneously.
The entitled external floating top tank based on dome of granted patent recycles lazy envelope system and QHSE conveying method (ZL
201710187989.5) it in, discloses and safety and environmental protection is solved the problems, such as using the hermetically sealed lazy envelope of circulation, but structure is complicated,
Cost is high, and less economical, there are no preferable solutions on the market at present.
Summary of the invention
For the problems in the relevant technologies, the present invention proposes nitrogen-filled seal and the refrigeration-type oil of a kind of volatility oil storage tank
Gas recovery system and method, it is not only easy, reliable, economical but also safe and environment-friendly, there is stronger promotional value.
In order to achieve the above technical purposes, the technical scheme is that it is such：
A kind of nitrogen-filled seal of volatility oil storage tank and refrigeration-type gas recovery system for oil, including oil tank, the oil tank
It is respectively arranged on the left side and the right side oil filler and unloading port, is equipped with oxygen sensor, pressure sensor and temperature sensing in the oil tank
Device, the output end of the oxygen sensor, pressure sensor and temperature sensor are all connected to the input terminal of control computer, institute
It states oil tank and is connected with refrigeration device for recovering oil and gas, the pipeline between the refrigeration device for recovering oil and gas and oil tank is equipped with breathing
Valve, the oil tank are connected with nitrogen making machine, and the pipeline between the oil tank and nitrogen making machine is equipped with nitrogen making machine valve, the control meter
The output end of calculation machine is connect with breather valve, refrigeration device for recovering oil and gas, nitrogen making machine valve, nitrogen making machine respectively.
Further, the oil tank is equipped with automatic blow off valve.
Further, the cracking pressure of the automatic blow off valve is 0.15Mpa.
Further, the oil filler, unloading port are equipped with control valve.
A kind of nitrogen-filled seal of volatility oil storage tank and refrigeration-type oil-gas recovery method, specifically include following steps：
S1：Starting nitrogen making machine simultaneously opens breather valve, and nitrogen is filled with the air in oil tank displacement tank；
S2：The oil gas of discharge, the gaseous mixture of nitrogen enter refrigeration device for recovering oil and gas, recycle oil gas；
S3：By gaseous mixture, recovered treated that nitrogen is directly discharged to atmosphere.
Beneficial effects of the present invention：It is almost nil using the oxygen content in oil tank after this system, the possibility that oil tank is fired
Property is reduced to zero；Meanwhile and the sealed storage due to realizing oil tank, the small breathing of oil tank usually the leakage of oil gas is also reduced to
0, greatly save petroleum resources；
The petroleum vapor recovery of 90-95% or so can be utilized in conjunction with refrigeration device for recovering oil and gas, due to nitrogen itself and oil gas
Gaseous mixture there is no small breathing exhaust, the exchange capacity of oil gas and atmosphere is reduced to extremely low magnitude, so, completely
It can achieve current environmental protection standard value, realize that environmental protection is balanced with safety and economic the maximum of three aspects；
The gaseous mixture of nitrogen and oil gas is recovered, and treated that nitrogen is discharged directly into atmosphere, the recycling without nitrogen
It recycles, to reduce number of devices, especially nitrogen storage tank, to sacrifice the economy that the fraction feature of environmental protection exchanges a complete set of equipment for
With reliability.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of nitrogen-filled seal of volatility oil storage tank according to embodiments of the present invention and refrigeration-type petroleum vapor recovery
The structure chart of system.
In figure：
1, oil tank；2, nitrogen making machine；3, freeze device for recovering oil and gas；4, computer is controlled；5, automatic blow off valve；6, it breathes
Valve；7, nitrogen making machine valve；8, oil filler；9, unloading port；10, oxygen sensor；11, pressure sensor；12, temperature sensor.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
As shown in Figure 1, a kind of nitrogen-filled seal of volatility oil storage tank and refrigeration-type gas recovery system for oil, including oil tank 1,
The oil tank 1 is respectively arranged on the left side and the right side oil filler 8 and unloading port 9, is equipped with oxygen sensor 10, pressure in the oil tank 1
The output end of sensor 11 and temperature sensor 12, the oxygen sensor 10, pressure sensor 11 and temperature sensor 12 is equal
It is connected to the input terminal of control computer 4, the oil tank 1 is connected with refrigeration device for recovering oil and gas 3, the refrigeration petroleum vapor recovery dress
Set pipeline between 3 and oil tank 1 and be equipped with breather valve 6, the oil tank 1 is connected with nitrogen making machine 2, the oil tank 1 and nitrogen making machine 2 it
Between pipeline be equipped with nitrogen making machine valve 7, it is described control computer 4 output end respectively with breather valve 6, refrigeration petroleum vapor recovery dress
3, nitrogen making machine valve 7, the connection of nitrogen making machine 2 are set, the oil tank 1 is equipped with automatic blow off valve 5.
For convenience of being further understood to above-mentioned technical proposal, now its following several frequently seen working condition is carried out specifically
It is bright：
Original state：There is certain density fuel-air mixture in 1 space of oil tank, and oxygen concentration is greater than the set value in gaseous mixture
A%, 1 space pressure of oil tank is about 0.1Mpa, is vented at this point, opening breather valve 6, starting refrigeration device for recovering oil and gas 3 and nitrogen processed
Nitrogen is filled in oil tank 1 by machine 2, when oxygen content is lower than setting value A%, closes breather valve 6, closes refrigeration petroleum vapor recovery dress
Set 3；Nitrogen charging operation is persistently carried out, when 1 pressure of oil tank is greater than 0.12Mpa, nitrogen making machine 2 stops working, and oil tank 1 is in closed
State.1 oxygen content of oil tank at this time is lower than A%, and 1 pressure of oil tank is in 0.12Mpa.At this point, oil tank 1 is in normal condition.Oil tank 1
Sealing, oxygen content are lower than secure threshold.
Storing state：After 1 long term storage of oil tank, it is possible to the case where pressure decline occur, after pressure decline, if oxygen
Gas concentration is lower than A%, under this situation, starts nitrogen making machine 2, the inflated with nitrogen into tank stops filling until pressure reaches 0.12Mpa
Nitrogen；Another situation is that oxygen concentration rises, more than A%, it is vented at this point, opening breather valve 6, opens refrigeration petroleum vapor recovery dress
3 are set, oil gas is recycled, meanwhile, opening nitrogen making machine 2 and nitrogen making machine valve 7 are to 1 supplying nitrogen of oil tank, when oxygen content is lower than A%,
Breather valve 6 is closed, refrigeration device for recovering oil and gas 3 is closed.
Emptying situation：When 1 emptying of oil tank, pasta declines in oil tank 1, pressure reduction in oil tank 1, when pressure drop in oil tank 1
When as low as 0.1Mpa, nitrogen making machine 2 starts, and starts, when 1 pressure of oil tank is in 0.12Mpa or less, persistently to fill to 1 nitrogen charging of oil tank
Nitrogen.At this point, breather valve 6 remains off.
Oiling situation：When oil tank 1 refuels, due to having certain pressure, first pre-cooling refrigeration device for recovering oil and gas in tank
3, after 3 running temperature of device for recovering oil and gas of freezing reaches operating temperature, open breather valve 6, make in tank nitrogen by relief valve,
Refrigeration device for recovering oil and gas 3 and breather valve 6 are discharged, until pressure inside the tank is reduced to 0.1Mpa or so, at this point, refrigeration petroleum vapor recovery
Device 3 is not closed, and breather valve 6 is not closed, and starts to refuel into tank, in oiling, by automatically adjusting valve aperture, makes tank internal pressure
Power maintains 0.1Mpa or so.
Pressurized state：After oiling, pressure inside the tank 0.1Mpa, oxygen content A% at this point, closing refrigeration oil gas hereinafter, return
Receiving apparatus 3 closes breather valve 6, opens 2 nitrogen charging of nitrogen making machine, nitrogen pressure in tank is charged to 0.12Mpa.When pressure inside the tank reaches
When 0.12Mpa, nitrogen making machine 2 is closed, closes nitrogen making machine valve 7.
Everyday stress variable condition：According to daily temperature change, pressure inside the tank meeting raising and lowering, when pressure inside the tank reaches
When 0.14Mpa, refrigeration device for recovering oil and gas 3 is opened, breather valve 6 is opened, oil tank 1 is exhausted, until 1 pressure of oil tank is reduced to
When 0.12Mpa, breather valve 6 is closed, closes refrigeration device for recovering oil and gas 3.When pressure inside the tank is lower than 0.1Mpa, start nitrogen making machine
2 carry out nitrogen charging, until pressure inside the tank reaches 0.12Mpa.
Special circumstances：Under normal circumstances, pressure inside the tank is not in unexpected decline.If under storing state, in tank suddenly
When pressure declines, illustrate that tank body has leakage, at this point, control computer 4 provides warning note.Under special status, if there is
Pressure inside the tank persistently rises, at this time if breather valve 6 is not opened normally, when pressure inside the tank reaches 0.15Mpa, if at this time
Oxygen content, which is in, fires range hereinafter, firing safety, and automatic blow off valve 5, which automatically opens, carries out improper exhaust decompression, gives simultaneously
Alarm signal out.If oxygen content is in and fires range, while automatic blow off valve 5 is opened, starting nitrogen making machine 2 carries out oxygen
It expels, while controlling computer 4 and also providing alarm signal, carry out manual intervention.
The above is merely preferred embodiments of the present invention, it is not intended to limit the invention, it is especially herein
The value of 0.12Mpa and 0.14Mpa and 0.15Mpa pressure value belong to variable finger for designing different storage tanks for pressure resistance
Mark, determines according to the safe design value of storage tank, and the present invention is not limited to use above-mentioned pressure value, but a comparison is reasonably oily
Tank pressure resistance pressure value.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should all wrap
Containing within protection scope of the present invention.
Claims (5)
1. a kind of nitrogen-filled seal of volatility oil storage tank and refrigeration-type gas recovery system for oil, including oil tank（1）, the oil tank
（1）Be respectively arranged on the left side and the right side oil filler（8）And unloading port（9）, which is characterized in that the oil tank（1）The interior oxygen that is equipped with passes
Sensor（10）, pressure sensor（11）And temperature sensor（12）, the oxygen sensor（10）, pressure sensor（11）And temperature
Spend sensor（12）Output end be all connected to control computer（4）Input terminal, the oil tank（1）Refrigeration oil gas is connected with to return
Receiving apparatus（3）, the refrigeration device for recovering oil and gas（3）With oil tank（1）Between pipeline be equipped with breather valve（6）, the oil tank
（1）It is connected with nitrogen making machine（2）, the oil tank（1）With nitrogen making machine（2）Between pipeline be equipped with nitrogen making machine valve（7）, the control
Computer processed（4）Output end respectively with breather valve（6）, refrigeration device for recovering oil and gas（3）, nitrogen making machine valve（7）, nitrogen making machine
（2）Connection.
2. a kind of nitrogen-filled seal of volatility oil storage tank according to claim 1 and refrigeration-type gas recovery system for oil,
It is characterized in that, the oil tank（1）It is equipped with automatic blow off valve（5）.
3. a kind of nitrogen-filled seal of volatility oil storage tank according to claim 2 and refrigeration-type gas recovery system for oil,
It is characterized in that, the automatic blow off valve（5）Cracking pressure be 0.15Mpa.
4. a kind of nitrogen-filled seal of volatility oil storage tank according to claim 1 and refrigeration-type gas recovery system for oil,
It is characterized in that, the oil filler（8）, unloading port（9）It is equipped with control valve.
5. a kind of nitrogen-filled seal of volatility oil storage tank and refrigeration-type gas recovery system for oil method, which is characterized in that specific packet
Include following steps：
S1：Start nitrogen making machine（2）And open breather valve（6）, nitrogen is filled with oil tank（1）Air in displacement tank；
S2：The oil gas of discharge, the gaseous mixture of nitrogen enter refrigeration device for recovering oil and gas（3）, recycle oil gas；
S3：By gaseous mixture, recovered treated that nitrogen is directly discharged to atmosphere.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810755863 | 2018-07-11 | ||
| CN2018107558638 | 2018-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108861179A true CN108861179A (en) | 2018-11-23 |
Family
ID=64321825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810985169.5A Pending CN108861179A (en) | 2018-07-11 | 2018-08-28 | A kind of nitrogen-filled seal of volatility oil storage tank and refrigeration-type gas recovery system for oil and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108861179A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109775166A (en) * | 2019-01-07 | 2019-05-21 | 深圳市奥德机械有限公司 | Nitrogen sealing system for die heater oil tank |
| CN110053889A (en) * | 2019-05-22 | 2019-07-26 | 四川飞达源通能源装备制造有限公司 | It is a kind of with datonation-inhibition and petroleum vapor recovery function aviation fuel storage system and the method for guaranteeing the quality |
| CN110077745A (en) * | 2019-04-24 | 2019-08-02 | 河北都邦石化工程设计有限公司 | Storage tank VOCs petroleum vapor recovery safety interlock control system and method |
| CN110594571A (en) * | 2019-09-17 | 2019-12-20 | 华陆工程科技有限责任公司 | Automatic ventilation valve with oil vapor recovery function for steel floating roof |
| CN110834830A (en) * | 2019-11-27 | 2020-02-25 | 中国民用航空飞行学院 | General aviation fuel storage tank explosion protection and quality guarantee system and method |
| CN115251175A (en) * | 2022-08-18 | 2022-11-01 | 国粮武汉科学研究设计院有限公司 | Efficient and flexible nitrogen filling process for edible vegetable oil storage tank |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109775166A (en) * | 2019-01-07 | 2019-05-21 | 深圳市奥德机械有限公司 | Nitrogen sealing system for die heater oil tank |
| CN110077745A (en) * | 2019-04-24 | 2019-08-02 | 河北都邦石化工程设计有限公司 | Storage tank VOCs petroleum vapor recovery safety interlock control system and method |
| CN110053889A (en) * | 2019-05-22 | 2019-07-26 | 四川飞达源通能源装备制造有限公司 | It is a kind of with datonation-inhibition and petroleum vapor recovery function aviation fuel storage system and the method for guaranteeing the quality |
| CN110594571A (en) * | 2019-09-17 | 2019-12-20 | 华陆工程科技有限责任公司 | Automatic ventilation valve with oil vapor recovery function for steel floating roof |
| CN110594571B (en) * | 2019-09-17 | 2024-05-28 | 华陆工程科技有限责任公司 | Automatic ventilation valve with oil vapor recovery function for steel floating roof |
| CN110834830A (en) * | 2019-11-27 | 2020-02-25 | 中国民用航空飞行学院 | General aviation fuel storage tank explosion protection and quality guarantee system and method |
| CN115251175A (en) * | 2022-08-18 | 2022-11-01 | 国粮武汉科学研究设计院有限公司 | Efficient and flexible nitrogen filling process for edible vegetable oil storage tank |
| CN115251175B (en) * | 2022-08-18 | 2024-05-07 | 国粮武汉科学研究设计院有限公司 | Efficient and flexible nitrogen filling process for edible vegetable oil storage tank |
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Application publication date: 20181123 |