CN105883711A - Oil vapor recovery device for oil depot and gas station - Google Patents
Oil vapor recovery device for oil depot and gas station Download PDFInfo
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- CN105883711A CN105883711A CN201410724408.3A CN201410724408A CN105883711A CN 105883711 A CN105883711 A CN 105883711A CN 201410724408 A CN201410724408 A CN 201410724408A CN 105883711 A CN105883711 A CN 105883711A
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- oil
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- separator
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Abstract
The invention provides an an oil vapor recovery device for an oil depot and a gas station and belongs to the environment protection technology of oil vapor recovery processing. By the adoption of the oil vapor recovery device for the oil depot and the gas station, mixed gas of various oil vapor and air generated in the storage and transportation processes of oil products is separated and adsorbed through the processes of an oil vapor separator, organic or inorganic films and the like. A hydrocyclone separation pipe and a coarse graining gathering plate are designed in the oil vapor separator. A separation film is a macromolecular dense film made of polyoctylmethylsiloxane which has higher selectivity and permeability, and the thickness of the film ranges from 1 micrometer to 3 micrometers. A supporting layer is made of a polyvinylidene fluoride material or an aluminum oxide material. Multiple adsorption agents of columnar activated carbon, silica gel and the like specially used for oil vapor recovery are adopted as adsorption agents in two adsorbers, the two adsorptors alternately conduct vacuum desorption under the action of a vacuum pump P2, and the desorption time is set to range from 15 minutes to 20 minutes. Waste heat generated in air circulation in the adsorbers can be extracted. By the adoption of the oil depot and the oil vapor recovery device for the gas station, the oil vapor recovery rate is as high as over 98%, oil vapor in exhaust gas is nearly close to zero discharge, and the remarkable environment benefits and economic benefits can be obtained.
Description
Technical field
The present invention relates to a kind of oil gas recovery processing system of environmental conservation and field of energy-saving technology, refer in particular to a kind of for oil depot and
Gas station oil gas retracting device.
Background technology
Along with the raising of people's quality of life, the protective awareness of environment is the most gradually strengthened.And for build in office space, cities and towns and
The gas station of living community and oil depot, owing to seldom installing gas recovery system for oil, refueling to locomotive or to the oil-filled process of oil depot
In will some oil gas volatilization in air, the most not only cause atmospheric pollution, continuously oil gas volatilization also can cause
Serious economic loss.According to statistics, China in 2003 has an all kinds of automobile more than 16,000,000, only consumes gasoline and just reaches 6000
Ten thousand tons, " breathe greatly " " little breathing " selling accumulating link, and Oil Production link evaporating loss is more than 600,000 tons, this phase
When closely reaching 2,000,000,000 RMB in annual economic loss.
The 2008 Beijing Olympic Games, Shanghai World's Fair in 2010 and Guangdong Asian Games preparatory period in 2012, Chinese Government throws huge
Money increases built many sets device for recovering oil and gas with the oil depot in main urban district and gas station near venue, and gradually in some provincial capitals
City launches to promote.
At present, people have been developed for multiple oil spirit recovery technology, such as absorption process, absorption method, condensation method and embrane method etc..
Wherein absorption process petroleum vapor recovery refers to be contacted with absorbent with air Mixture by oil gas, according to different component in absorbent
Different solubility, i.e. oil-gas component are dissolved in this absorbent and form solution, it is impossible to the constituent of air of dissolving then retains in the gas phase,
The component of the most former mixed gas is separated.Therefore absorption process has obvious advantage for process high concentration, the oil gas of big flow,
The quality of recovering effect depends primarily on absorbent.As in absorption process recovery system tail gas to be controlled gas concentration in the lowest level,
The height on absorption tower may be the highest, thus adds investment and operating cost.Absorption method is conducive to controlling oil in recovery system tail gas
Gas concentration in the lowest level, but its exist heat of adsorption substantially, resolve more difficult, reach the problems such as time of equilibrium adsorption is longer, therefore
It is particularly suitable for reclaiming low concentration, the oil gas of low discharge, and preferably as the subsequent treatment of some group technology.Condensation method is to utilize
Various hydro carbons VOCs have different saturated vapor pressures at different temperatures and pressures, by reducing temperature or increasing pressure, make certain
The light-end products such as a little Organic substances are converted into the principle of liquid by gaseous state, gasoline are distilled by heating crude oil and obtain, as long as therefore by oil
Gas cools to below initial boiling point just can become liquid from gaseous state.Condensation method is simple, can directly reclaim oil product, for process high concentration,
The oil gas of middle flow has obvious advantage.But less than less than-70 DEG C, simple condensation method condensation temperature just can ensure that the response rate reaches
To about 90%, correspondingly refrigeration system is more complicated.Meanwhile, low temperature material to be used and increase the link such as insulation, defrosting,
Cost of investment and operating cost are the highest.Membrane separation process utilizes oil gas and air at film internal diffusion performance (i.e. infiltration rate)
Difference realizes separating, and i.e. allows oil gas/air mixture through " filtration " of film under certain pressure reduction promotes, makes gaseous mixture
In oil gas preferentially separated and recovered by film, air is then retained by selectivity.Film separation system negative-pressure operation can not be kept away
Introducing air with exempting from, so using positive pressure operation, using special explosion-proof oil gas compressor, while improving membrane motive force
Oozing residual air keeps higher pressure to be conducive to the operation of adsorption system, improves adsorption efficiency.Membrane separation process Investigation of Petroleum Vapor Recovery Technology conduct
One new technique, is still in research and development, especially develops high performance membrane material.At present, although membrane technology is also
There is no maturation, but can be as a kind of pretreatment in group technology, its effect is more clear than other techniques.
Owing to single technique is extremely difficult to environmental emission standard, therefore the most generally use the mode that several techniques combine, the most not
With the combination of technique with the complementation that gets the mastery, and reduce environmental pollution to a certain extent, improve its processing safety.According to this
The technical characterstic of invention retrieved related patent data storehouse, is found to have following several group technology:
Application number 200620168794.3 patent " membrane method oil-gas recovery system " and application number 200720305625.5 patent " are used
Oil gas recovery processing system in gas station ", two kinds of patents all only have employed merely membrane separation process, as mentioned above at present at film
In the case of assembly does not also have maturation, simple a certain technique is the gas concentration discharge standard being difficult to arrive national regulation.
The patent " overlapping method Oil-gas Separation recovery system and separation and recovery method thereof " of application number 200410064973.8, application number
200610135849.5 patent " condensation and membrane separation combined type oil gas reclaiming technical technology " and application number 200720089596.2
Patent " the film-type condensation oil-gas-liquid gasifying device processed for gas station or oil depot petroleum vapor recovery " all have employed " condensation " and " film
Separate " combined technical method.The patent " a kind of petroleum vapor recovery processing method " of application number 200710003055.8 and application number
The patent of 200710131549.4 " utilizes absorption process and the petroleum vapor recovery of membrane separation process integrated technology " and have employed " absorption " and " film "
Combined technical method.That not yet publishes at present closely-related with the technology of the present invention feature takes that " membrance separation and absorption are answered
Close technique " oil-gas recovery method be applied to gas station or the report of oil depot petroleum vapor recovery.
Summary of the invention
It is an object of the invention to the deficiency for overcoming existing Oil-gas Separation recovery technology, be the improvement to single adsorption technology, overcome
Single absorbing process adsorption time is long, the shortcoming that treating capacity is little.For the deficiency that prior art is above-mentioned, provided by the present invention is work
Skill is simple, facility compact, energy consumption are less, operating cost is low, operating cost is low, the investment payback time is short, and floor space is little, nothing
The good membrance separation of benefit and absorbing process method are reclaimed in secondary pollution.
The present invention is membrance separation and absorbing process gas recovery system for oil, including compressor, gs-oil separator, membrane module, absorption list
Unit and vacuum pump, link together as shown in figure.It is provided with two adsorbers at absorbing unit and carries out alternating sorbent and desorption, and set
Count the taking-up of heat release in adsorption process, thus ensure that activity and the life-span of activated carbon, reach good adsorption effect.
The oil-gas recovery method that membrance separation of the present invention combines with absorbing process is: by compressor compresses fuel-air mixture
Then, after gs-oil separator removes solid particle therein and mist oil droplet, film separation system is entered；Through membrance separation system
After system, oozing residual air and enter absorbing unit, the infiltration gas containing enrichment oil gas returns to sunken tank；Through adsorber absorption with
After parsing, stripping gas sends into sunken tank by vacuum pump, and device discharge gas is close to zero-emission.
Technique of the present invention can be divided into petroleum vapor recovery membranous system and oil gas absorption/desorption system, and its approach realized is:
The fuel-air mixture collected after compression, enters the gs-oil separator in petroleum vapor recovery membranous system, designs eddy flow in gs-oil separator
Separate pipe and coarse assembles plate.The oil droplet that wherein granule is big is just separated, and remaining oil gas and air enter membrance separation system
System separates further.Separating film is to have compared with strong selectivity and infiltrative poly-caprylil methicone macromolecule dense film, thickness
Degree is 1～3 μm, using Polyvinylidene material or aluminium sesquioxide as the membrane structure of supporting layer.Before and after membrane separator pressure
Under difference effect, most oil gas is enriched in infiltration gas side and out isolates liquid with gs-oil separator from membrane separator
Oil enters sunken tank together, and remaining residual air entrance adsorption system of oozing containing a small amount of oil gas is adsorbed further.Adsorber is used
Adsorbent in oil gas adsorption treatment is the multiple adsorbents such as column oil gas special active carbon and silica gel.System work in adsorption system
Skill arranges original state acquiescence adsorber A and adsorbs oil gas, and the residual air inlet of oozing separated in by membranous system reaches saturated shape
During state, oil-gas transportation is switched to adsorber B, adsorber B by process control procedure automatically to start to adsorb oil gas.The trueest
Empty pump P2 starts, and adsorber A carries out vacuum desorption, and desorption time is set as 15～20 minutes.After being desorbed, adsorber A
Slowly discharge negative pressure state, and activated carbon is purged, reply normality and enter duty of awaiting orders.Oil gas in device B upon adsorption
When inlet reaches saturation value again, then being switched to adsorber A, simultaneously adsorber B desorption, the oil gas of desorption is admitted to underground
In storage tank.The waste heat in adsorber A (4) and adsorber B (5) with air circulation takes out design, it is to avoid in adsorption process
After reaching thermal balance after heating, the stopping of adsorption process, it is ensured that the activity of adsorbent and long-period stable operation.So circulation.
Air not to be adsorbed enters airborne release.The gas concentration discharged by this technical process is well below in discharge standard
25g/m3。
The present invention adds absorbing process relative to traditional condensation and simple membrane process is compared, and its outstanding feature is: 1, system knot
Structure is simple, and automaticity is high, and operating cost is cheap；2, the advantage integrating membrance separation and adsorption recovery method so that this
Invention more can be employed for various oil vapor treatment place widely；3, discharge index meets far away domestic and international most stringent of environment protection emission
Standard-required；4, separating effect is notable, and its response rate, up to more than 98%, can obtain obvious environmental benefit and economic benefit；
5, noise is little, and energy consumption is little, and the petroleum vapor recovery being suitable for resident's residential location processes.
Accompanying drawing explanation
Fig. 1 is that film adds adsorption combined petroleum vapor recovery process chart
Explanation in Fig. 1:
1-discharge 2-compressor P1 3-oil gas is from device
4-membrane separator 5-adsorber A 6-adsorber B
7-vacuum pump P2 8-oil return pipe 9-floss hole
Detailed description of the invention
With embodiment, the technique of the present invention is further elaborated below in conjunction with the accompanying drawings.
As it is shown in figure 1, concrete technology of the present invention is sequentially provided with discharge (1), compressor P1 (2), Oil-gas Separation from left to right
Device (3), membrane separator (4), adsorber A (5), adsorber B (6), vacuum pump P2 (7), oil return pipe (8) and two
Floss hole (9) above individual adsorber.
In figure, the connection of each several part is as follows: discharge (1) is through compressor P1 (2) and gs-oil separator (3) entrance point
It is connected；Gs-oil separator (3) top exit end is connected with membrane separator (4) inlet end, gs-oil separator (3) bottom
Outlet is connected with oil return pipe (8)；Membrane separator (4) oozes the residual air port of export and adsorber A (4), adsorber B (5)
Air inlet is connected, and membrane separator (4) the infiltration gas port of export is connected with oil return pipe (8)；Adsorber A (5) and adsorber
The resolution gas port of export of B (6) is connected with vacuum pump P2 (7) inlet port, the gas outlet of vacuum pump P2 (7) and oil return pipe
(8) it is connected；Adsorber A (4) and adsorber B (8) is in parallel, and its top is connected with air vent (9).
This technique operationally, utilizes oil gas gas gathering system, by oil storage and transportation equipment transmitting-receiving by during produce various oil gas
Gs-oil separator (3), gs-oil separator (3) is sent into by discharge (1) through compressor P1 (2) with the mixed gas of air
Middle design separating cyclone tube and coarse assemble plate.The structure and the separation principle that utilize gs-oil separator (3) self are oily by bulky grain
Dripping and separate, remaining oil gas and air Mixture enter membrane separator (4) under pressure differential effect through gs-oil separator (3)
Further separating process, most oil gas is enriched in infiltration gas side and out divides with gs-oil separator from membrane separator
The bulky grain oil droplet separated out returns to sunken tank through oil return pipe (8) together or directly sends use outside.Separating film is to have to select more by force
Selecting property and infiltrative poly-caprylil methicone macromolecule dense film, film thickness is 1～3 μm, with Polyvinylidene material or three
Al 2 O is as the membrane structure of supporting layer.The residual air of oozing containing a small amount of oil gas separated from membrane separator (4) is sent to
Further adsorbing separation in the adsorber A (5) of system default.Adsorber A (4) and adsorber B (5) inhales for oil gas
The adsorbent of attached process is the multiple adsorbents such as column oil gas special active carbon and silica gel.At adsorber A (4) and adsorber B (5)
In have air circulation waste heat take out design, so make exotherm reaction carry out to positive direction always, it is to avoid arrive thermal balance,
Adsorption reaction stops.That separates in by membrane separator (4) oozes residual air inlet when reaching saturation, technology controlling and process journey
Oil-gas transportation is switched to adsorber B (6), adsorber B (6) and starts to adsorb oil gas by sequence automatically.Simultaneously vacuum pump P2 (7)
Starting, adsorber A (5) carries out vacuum desorption, and desorption time is set as 15～20 minutes.After being desorbed, adsorber A (5)
Slowly discharge negative pressure state, and activated carbon is purged, reply normality and enter duty of awaiting orders.Oil in device B (6) upon adsorption
When gas inlet reaches saturation value again, then it is switched to adsorber A (5), simultaneously adsorber B (6) desorption, the oil gas of desorption
Sent into sunken tank by vacuum pump P2 (7) or directly send use outside, so circulating.Air not to be adsorbed is through air vent (9)
Enter airborne release, it is achieved thereby that the recycling of oil gas, and prevent the pollution of the environment.
In this piece-rate system, compressor P1 (2), membrane separator (4), adsorber A (5), adsorber B (6) and true
The start and stop of empty pump P2 (7) are all to be sensed force value herein and system automatic control program by pressure transducer everywhere
In pressure limit contrast automatically control.Wherein the adsorbent used in adsorber A (5) and adsorber B (6) is special
Door research is used for column activated carbon and the silica gel of petroleum vapor recovery, and triphen is difficult to make this activated carbon poison deactivation, its absorption/desorption effect
Fruit is far longer than active carbon, can carry out second development and utilization, do not result in secondary pollution after using.
Claims (6)
1. oil depot and a gas station oil gas retracting device, is characterized in that: this device be sequentially provided with from left to right discharge (1),
Compressor P1 (2), gs-oil separator (3), membrane separator (4), adsorber A (5), adsorber B (6), vacuum pump P2
(7), the floss hole (9) above oil return pipe (8) and two adsorbers.Each several part connection is as follows: discharge (1)
It is connected with gs-oil separator (3) entrance point by compressor P1 (2)；Gs-oil separator (3) top exit end and membrance separation
Device (4) inlet end is connected, and gs-oil separator (3) outlet at bottom is connected with oil return pipe (8)；Membrane separator (4) oozes
The residual air port of export is connected with the air inlet of adsorber A (5), adsorber B (6), membrane separator (4) infiltration the gas port of export with
Oil return pipe (8) is connected；The stripping gas port of export of adsorber A (5) and adsorber B (6) and vacuum pump P2 (7) air inlet
Mouth end is connected, and the gas outlet of vacuum pump P2 (7) is connected with oil return pipe (8)；Adsorber A (5) and adsorber B (6)
Parallel connection, its top is connected with air vent (9).
Oil depot the most according to claim 1 and gas station oil gas retracting device, it is characterised in that: gs-oil separator (3)
Middle design separating cyclone tube and coarse assemble plate.
Oil depot the most according to claim 1 and gas station oil gas retracting device, it is characterised in that: separate film be have stronger
Selectivity and infiltrative poly-caprylil methicone macromolecule dense film, film thickness is 1～3 μm, with Polyvinylidene material or
Aluminium sesquioxide is as the membrane structure of supporting layer.
Oil depot the most according to claim 1 and gas station oil gas retracting device, it is characterised in that: adsorber A (5) and suction
Adnexa B (6) replaces desorption under vacuum pump P2 (7), and its desorption time is set as 15～20 minutes.
Oil depot the most according to claim 1 and gas station oil gas retracting device, it is characterised in that: adsorber A (4) and suction
In adnexa B (5), the adsorbent for oil gas adsorption treatment is the multiple adsorbents such as column oil gas special active carbon and silica gel.
Oil depot the most according to claim 5 and gas station oil gas retracting device, it is characterised in that: at adsorber A (4) and
The waste heat in adsorber B (5) with air circulation takes out design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410724408.3A CN105883711A (en) | 2014-11-27 | 2014-11-27 | Oil vapor recovery device for oil depot and gas station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410724408.3A CN105883711A (en) | 2014-11-27 | 2014-11-27 | Oil vapor recovery device for oil depot and gas station |
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| Publication Number | Publication Date |
|---|---|
| CN105883711A true CN105883711A (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410724408.3A Pending CN105883711A (en) | 2014-11-27 | 2014-11-27 | Oil vapor recovery device for oil depot and gas station |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1249264A1 (en) * | 2001-04-11 | 2002-10-16 | Ammonia Casale S.A. | Process for the separation and recovery of carbon dioxide from waste gas or fumes produced by combustible oxidation |
| CN201235269Y (en) * | 2008-08-08 | 2009-05-13 | 南京天膜科技有限公司 | System for separating and recycling oil gas with film and pressure swing adsorption overlapping method |
| CN101462684A (en) * | 2007-12-18 | 2009-06-24 | 天津开发区贰加壹米兰环保科技有限公司 | Variable frequency oil gas recycling method for moving condensation and adsorption |
| CN101579596A (en) * | 2009-06-12 | 2009-11-18 | 江苏三星化工有限公司 | Device and method for recovering oil gas by condensation-adsorption combined technology |
| CN101642659A (en) * | 2009-08-10 | 2010-02-10 | 江苏三星化工有限公司 | Oil gas recovery device and method of coating adsorption combination technology |
| CN103977669A (en) * | 2014-06-05 | 2014-08-13 | 中膜科技(苏州)有限公司 | VOCs (Volatile Organic Chemicals) processing method and corresponding system |
-
2014
- 2014-11-27 CN CN201410724408.3A patent/CN105883711A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1249264A1 (en) * | 2001-04-11 | 2002-10-16 | Ammonia Casale S.A. | Process for the separation and recovery of carbon dioxide from waste gas or fumes produced by combustible oxidation |
| CN101462684A (en) * | 2007-12-18 | 2009-06-24 | 天津开发区贰加壹米兰环保科技有限公司 | Variable frequency oil gas recycling method for moving condensation and adsorption |
| CN201235269Y (en) * | 2008-08-08 | 2009-05-13 | 南京天膜科技有限公司 | System for separating and recycling oil gas with film and pressure swing adsorption overlapping method |
| CN101579596A (en) * | 2009-06-12 | 2009-11-18 | 江苏三星化工有限公司 | Device and method for recovering oil gas by condensation-adsorption combined technology |
| CN101642659A (en) * | 2009-08-10 | 2010-02-10 | 江苏三星化工有限公司 | Oil gas recovery device and method of coating adsorption combination technology |
| CN103977669A (en) * | 2014-06-05 | 2014-08-13 | 中膜科技(苏州)有限公司 | VOCs (Volatile Organic Chemicals) processing method and corresponding system |
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