CN102303757A - Oil gas breather loss recovery device - Google Patents
Oil gas breather loss recovery device Download PDFInfo
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- CN102303757A CN102303757A CN201110232444A CN201110232444A CN102303757A CN 102303757 A CN102303757 A CN 102303757A CN 201110232444 A CN201110232444 A CN 201110232444A CN 201110232444 A CN201110232444 A CN 201110232444A CN 102303757 A CN102303757 A CN 102303757A
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- oil
- air bag
- loss
- oil tank
- breather
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Abstract
The invention claims an oil gas breather loss recovery device, and belongs to the oil gas storage and transportation technology. The evaporation loss of the oils in the oil tank storage and transportation process can cause great economic loss and problems of environment pollution and potential safety hazard. The oil gas breather loss recovery device comprises an airbag which is connected with a breather valve of an oil tank through a rubber tube to form a sealed system with the oil tank; and an overload protection device and an oil collecting port are arranged on the airbag; when the pressure in the oil tank exceeds the upper limit pressure that the breather valve can bear to breathe out the oil vapor, the breathed oil vapor enters the recovery device to prevent the oil vapor from entering the atmosphere; when the pressure in the oil tank is lower than the lower limit pressure that the breather valve can bear, the oil vapor is breathed in from the airbag; and therefore, the oil gas breather loss recovery device forms an organic integer with the oil tank, the work principle is reliable and easy, and the oil vapor breather loss is obviously reduced. The oil gas breather loss recovery device can increase the economic benefit of enterprises, save energy sources and reduce the environment pollution, and has wide applicability.
Description
One, technical field
The invention belongs to the oil gas storaging and transport technology, be specifically related to a kind of fixed-roof oil tank oil gas evaporation loss regenerative apparatus.
Two, background technology
In order to reduce the oil gas evaporation loss; Reduce the pollution of hydrocarbon vapour to environment; From the forties; People have just begun one's study and have explored the measure that reduces the oil gas evaporation loss; And on the basis that deepens constantly evaporation loss mechanism understanding; A series of measures have been developed, such as reducing a jar interior temperature traverse; Improve tank structure, improve the oil tank bearing capacity; Eliminate the gas compartment on the pasta; Collect the technology such as oil vapour of breathing out.Also note simultaneously having taked to improve operative technique, strengthen the consumption reduction measure that maintenance of equipment, rational management oil product etc. improve production control.Oil and products thereof is the compound of multiple hydro-carbon, and light component wherein has very strong volatility.In exploitation, refining, accumulating and the sales process of oil; Owing to receive the restriction of technology and equipment; Can some lighter liquid composition vaporize inevitably; Escape into atmosphere; Cause expendable loss; This phenomenon is called the evaporation loss of oil product, can bring enormous economic loss, causes problems such as environmental pollution, potential safety hazard.The oil product evaporating loss that the vertical type cylinder shape fixed-roof oil tank of breathing valve is housed can be divided into two types, i.e. breathing loss and big breather loss.During the static oil storage of oil tank, owing to jar in gas compartment temperature and gas concentration change the static loss through standing that the loss that causes is called oil tank round the clock, claim " little breathing " loss of oil tank again.Oil tank is when the oily operation of transmitting-receiving, and liquid level is constantly to change, and this oil loss that causes owing to the electrolyte level variation is called " breathing greatly " loss.
The representative type survey data shows that the accumulated quantity of oil product evaporating loss is very surprising.According to nineteen fifty-five the 4th international petroleum meeting report, in the U.S., be worked into all processes of sale of finished goods from the well site through refining, the quantity of oil loss accounts for 3% of crude output.1975, the investigation of owned enterprise of Soviet Union petro chemical industry portion showed that the oil loss amount in the refinery accounts for 2.47% of crude runs, and wherein 70% of the net loss consumption is the evaporation loss that betides petroleum tank, mediation oil tank and product tank.1980, China began to the mining site crude oil storage from well head the test shows of 11 main oilfield, and mining site oil loss amount accounts for 2% of oil production, wherein betided well, stood, the evaporation loss in storehouse accounts for 32% of overall loss amount.Relevant data shows that the quantity of oil product evaporating loss is appreciable really.If with the overall loss rate is 3% estimation, the oil product that scatters and disappears in atmosphere every year in the whole world has 100,000,000 tons approximately, almost is equivalent to the crude output in 1 year of China.This seems further that for ubiquitous energy shock in the our times scope problem is serious.
Three, summary of the invention
The purpose of this invention is to provide a kind of oil gas breather loss regenerative apparatus, reduce the oil gas evaporation loss, improve energy availability.The technical scheme that the present invention adopts is: oil gas breather loss regenerative apparatus comprises an air bag, and air bag is connected with pressure-and-vacuum release valve through sebific duct, constitutes bounded system with oil tank; Pressure overload protection device and receiving port are arranged on air bag.
When the oil tank internal pressure surpassed the upper limit pressure exhalation oil vapour that breathing valve can bear, the oil vapour of exhalation entered into regenerative apparatus, avoids oil vapour to get into atmosphere; And the oil tank internal pressure is when being lower than the threshold pression that breathing valve can bear, inspiration oil vapour from air bag.Like this, the present invention and oil tank form an organic whole, and principle of work reliably is prone to row, has obviously reduced the oil vapour breather loss.
The present invention has reduced the oil gas breather loss when oil product stores in the fixed-roof oil tank effectively, has improved the oil product availability, has increased economic benefit of enterprises, has practiced thrift the energy, has reduced environmental pollution.Have very wide applicability, be adapted at finished oil oil tank, crude oil oil tank and mediation oil tank tank deck and install and use.
Four, description of drawings
Fig. 1 is an oil gas breather loss regenerative apparatus flow scheme; Shown working process of the present invention; When oil-air pressure in the oil tank surpass breathing valve can bear force value the time; Carry out exhalation process; Device for recovering oil and gas then is to carry out breathing process; Airbag inflation, oil gas gets into air bag by oil tank through breathing valve; When oil-air pressure in the oil tank was lower than the vacuum pressure value that breathing valve can bear, oil tank carried out breathing process, and device for recovering oil and gas then carries out exhaust process, and air bag shrinks, and oil gas is got back to oil tank by air bag through breathing valve.
Fig. 2 is oil gas breather loss regenerative apparatus planimetric position figure, has expressed the main composition parts and the mutual alignment relation thereof of this device.
Fig. 3 is an oil gas breather loss regenerative apparatus structural representation.
Five, the specific embodiment
Oil gas is breathed regenerative apparatus and is made up of air bag 1, sebific duct 2, pressure overload protection device 4, receiving port 5 and air bag fixed parts etc.
The enforcement of pressure overload protection device 4 can have two kinds of methods: the one, be directly installed on the side of air bag; But this method can be brought certain difficulty to the manufacturing of airbag apparatus; And because air bag can change along with the variation of oil and gas content; So fold phenomenon that can take place not stop in the air bag side; Will form the phenomenon of the crooked air bag that does not stop like this at pressure overload protection device and air bag joint, be unfavorable for the service life of air bag like this.Second method is only to leave a little outlet in the side of air bag; Outlet is connected out by sebific duct; Be connected with pressure overload protection device by sebific duct; The manufacture process of air bag can be many easily like this; Can improve manufacturing efficient greatly; This method of attachment meeting protects air bag to make it that crooked phenomenon of fold not take place in the junction effectively; Can improve the service life of air bag; And; In case problem has appearred in air bag or pressure overload protection device; Need repairing or when changing, can separate individual processing to pressure overload protection device and air bag, only take measures necessary to problematic parts.For example, when air bag appearance damage needs to change, only need change air bag, keep pressure overload protection device, and needn't change whole airbag apparatus, it all is feasible operating from still being economically like this.Therefore second method is adopted in suggestion.Valve can adopt A21F-16C, A21F-25, A21F-40 type PN16～PN40 outside thread to connect spring sealing Low lift safety valve.Can also select the safety valve of other types as required.
Connect through sebific duct 2 between air bag 1 and the breathing valve 3, sebific duct 2 can adopt the fully enclosed bolted connection with being connected with sebific duct 2 and being connected of air bag 1 of breathing valve 3, and bolted connection makes the assembly and disassembly of whole device become and realizes easily.Advise relating to sebific duct in the whole device and this connection mode is all adopted in parts bonded assembly place.Wherein, the material of sebific duct should meet the corrosion of anti-oil gas, the anti-Japanese solarization of Chinese People's Anti-Japanese Military and Political College's compression ring border burn into, good toughness, the requirement that intensity is high.
The air bag fixed parts is between oil tank tank deck and oil tank tank deck guardrail, truss members to be set, and makes air bag be fixed on the oil tank top, and strengths set forth must enough be kept out the local destructive effect that maximum wind speed brought, to guarantee the safety of whole device.
Each parts of oil gas evaporation loss regenerative apparatus all are to carry out stack-mounted at the scene, and air bag 1 annular in oil tank tank deck guardrail is installed, and is fixed by the air bag fixed parts; The two ends branch of air bag 1 is in the both sides of oil tank staircase inlet 6, air bag 1 one end setting pressure overload protection devices 4, and the other end is installed receiving port 5; In air bag 1 outside protecting sleeve is arranged.The order of connection of whole device is, connects a sebific duct from breathing valve, and sebific duct is connected with air bag again.Two sides of air bag connect two sebific ducts respectively, and a sebific duct is connected with pressure overload protection device, and another is a receiving port, and the receiving port direct connection goes out sebific duct and receives oily operation.The caliber of receiving port can be in 2～5cm scope, and the caliber that connects breathing valve and air bag can be in 0.5～3cm scope, and the caliber that connects pressure overload protection device and air bag can be in 0.5～2cm scope.
Oil gas breather loss and air bag ring section radius calculation are given an example: area, Zhengzhou volume is 1000m
3, 2000m
3, 3000m
3, 4000m
3, 5000m
3, 10000m
3, 20000m
3The ground Vertical Arch-roof Tank; III checks in by vault storage tank series; Corresponding diameter is 10.80m, 14.00m, 16.00m, 18.10m, 20.00m, 28.00m, 37.00m; T=21.7 ℃ of the atmosphere mean temperature of local some day of May; Oil tank is all adorned gasoline; Oil tank space oil vapour molal weight μ=68kg/kmol, the oil tank exhaust temperature is taken as t=29.4 ℃, the oil product COEFFICIENT K
1=0.20, K
2=16.
Utilize Japanese energy resource Room formula F
1=0.024K
1V
2/3K
2Exp (0.039T) μ/(22.4* (273+t)/273) calculates, and brings each correlation parameter into, and the breathing loss amount of trying to achieve a day is respectively: 49kg, 78kg, 102kg, 124kg, 143kg, 228kg, 361kg.For the sake of security, the adding safety allowance multiply by safety factor a=1.1 respectively, obtains respective value and is: 54kg, 86kg, 112kg, 136kg, 157kg, 251kg, 397kg.Getting oil vapour concentration is 3kg/m
3, obtaining cooresponding breath volume is 18m
3, 29m
3, 37m
3, 45m
3, 52m
3, 84m
3, 132m
3For air bag, getting its sectional area radius is R
2, air bag ring cross-section centerline diameter is approximate with oil tank overall diameter D
1Deduct 0.3m and replace, get 330 degree circular arcs and calculate, adopt formula V=11/12*3.14
2* R
2 2* (D
1-0.3), calculate to such an extent that cooresponding air bag section radius is respectively: 0.43m, 0.49m, 0.52m, 0.53m, 0.55m, 0.58m, 0.63m.Above data preparation is become form, as follows:
By above form can clearly see add device for recovering oil and gas after, can save a large amount of oil products every day, the huge economic benefit of bringing.And can be found out by above data, also be rationally feasible by the size of institute of the present invention design-calculated device for recovering oil and gas.
The present invention can not only significantly reduce the loss of oil gas respiratory evaporation, and can greatly reduce the construction productive costs, can satisfy the requirement of each side well.
Oil tank oil gas evaporation loss regenerative apparatus of the present invention can be summed up as one type in oil tank with variable gas space; For this type oil tank; Once designed the common tank deck diameter of air bag top oil tank in the past than the big 2.5～3.5m of tank skin part, volume adjustable is about 8～12% of oil tank volume.But this oil tank is for adapting to the controllability of volume, and top board is all thinner, and top board all is to be that fixed end moves in certain angle with the periphery, is easy to endurance failure, no longer adopts at present.Then there is not this type of problem in the attaching oil gas recovering device on fixed-roof oil tank; Because China has a large number of oil tank at present; And scale will continue to enlarge; Annual oil gas evaporation waste is quite surprising; So no matter be to reequip on the dome-type tank or device for recovering oil and gas directly directly is set on newly-built oil tank building; All will obtain considerable benefit, have vast market prospect.
Claims (2)
1. oil gas breather loss regenerative apparatus, it is characterized in that: it comprises an air bag (1), air bag (1) is connected with pressure-and-vacuum release valve (3) through sebific duct (2), with oil tank formation bounded system; Overload protection device (4) and receiving port (5) are arranged on air bag (1).
2. according to the described oil gas breather loss of claim (1) regenerative apparatus, it is characterized in that: air bag (1) annular in oil tank tank deck guardrail is installed, and is fixed by the air bag fixed parts; The two ends branch of air bag (1) is in the both sides of oil tank staircase inlet (6), and air bag (1) one end is installed overload protection device (4), and the other end is installed receiving port (5); In air bag (1) outside protecting sleeve is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110232444A CN102303757A (en) | 2011-08-15 | 2011-08-15 | Oil gas breather loss recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110232444A CN102303757A (en) | 2011-08-15 | 2011-08-15 | Oil gas breather loss recovery device |
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|---|---|
| CN102303757A true CN102303757A (en) | 2012-01-04 |
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ID=45377706
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|---|---|---|---|
| CN201110232444A Pending CN102303757A (en) | 2011-08-15 | 2011-08-15 | Oil gas breather loss recovery device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989964A (en) * | 2016-01-21 | 2017-07-28 | 中国石油大学(华东) | A kind of experimental system for testing the discharge of crude oil storage tank loss through breathing |
| CN114435787A (en) * | 2020-10-31 | 2022-05-06 | 中国石油化工股份有限公司 | Pollutant zero release storage tank and storage system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094371A (en) * | 1993-04-24 | 1994-11-02 | 徐晴武 | Energy-saning gas collection tank |
| CN202244894U (en) * | 2011-08-15 | 2012-05-30 | 辽宁石油化工大学 | Oil vapor breathing loss recovery device |
-
2011
- 2011-08-15 CN CN201110232444A patent/CN102303757A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094371A (en) * | 1993-04-24 | 1994-11-02 | 徐晴武 | Energy-saning gas collection tank |
| CN202244894U (en) * | 2011-08-15 | 2012-05-30 | 辽宁石油化工大学 | Oil vapor breathing loss recovery device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989964A (en) * | 2016-01-21 | 2017-07-28 | 中国石油大学(华东) | A kind of experimental system for testing the discharge of crude oil storage tank loss through breathing |
| CN114435787A (en) * | 2020-10-31 | 2022-05-06 | 中国石油化工股份有限公司 | Pollutant zero release storage tank and storage system |
| CN114435787B (en) * | 2020-10-31 | 2024-03-08 | 中国石油化工股份有限公司 | Pollutant zero release storage tank and storage system |
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Application publication date: 20120104 |