CN106512645A - Oil gas recycling system and oil gas recycling method - Google Patents
Oil gas recycling system and oil gas recycling method Download PDFInfo
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- CN106512645A CN106512645A CN201611254732.9A CN201611254732A CN106512645A CN 106512645 A CN106512645 A CN 106512645A CN 201611254732 A CN201611254732 A CN 201611254732A CN 106512645 A CN106512645 A CN 106512645A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G5/00—Recovery of liquid hydrocarbon mixtures from gases, e.g. natural gas
- C10G5/02—Recovery of liquid hydrocarbon mixtures from gases, e.g. natural gas with solid adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention relates to an oil gas recycling system. The oil gas recycling system comprises a first adsorption tower, a second adsorption tower, a third adsorption tower, a fourth adsorption tower, a vacuum pump, a gas inlet pipeline, an exhaust pipeline and a regenerated gas pipeline, wherein the gas inlet pipeline comprises a gas inlet, a first pipeline, a second pipeline, a third pipeline and a fourth pipeline which are respectively connected with inlets of the first adsorption tower, the second adsorption tower, the third adsorption tower and the fourth adsorption tower, and a first switching pipeline; the exhaust pipeline comprises an exhaust hole, a fifth pipeline, a sixth pipeline, a seventh pipeline and an eighth pipeline which are respectively connected with outlets of the first adsorption tower, the second adsorption tower, the third adsorption tower and the fourth adsorption tower, and a second switching pipeline, a third switching pipeline and a fourth switching pipeline; and the regenerated gas pipeline comprises a regenerated gas outlet, a ninth pipeline, a tenth pipeline, an eleven pipeline and a twelfth pipeline which are respectively connected with the inlets of the first adsorption tower, the second adsorption tower, the third adsorption tower and the fourth adsorption tower, and a fifth switching pipeline. The oil gas recycling system has two operating modes, namely, a single-stage mode and a parallel mode, and can meet different oil gas treatment requirements, one vacuum pump is adopted under the two operating modes, the equipment input is reduced, the energy consumption is reduced, the oil gas recycling effect is good, and the efficiency is high.
Description
Technical field
The present invention relates to a kind of gas recovery system for oil and oil-gas recovery method.
Background technology
As oil and products thereof is the mixture of various hydrocarbons, wherein light component at normal temperatures vapour pressure compared with
Height, highly volatile.So oil product evaporating loss is widely present from oil depot to gas station again in the whole storage and transport process of user
Problem.Oil product evaporating loss brings many serious harms to enterprise and society, such as reduces oil quality, environmental pollution, resource
Waste, cause disaster hidden-trouble and harm personal safety etc..Therefore need to reclaim oil gas.
Device for recovering oil and gas, refers in handling gasoline and to during group refueling, the oil gas collection of volatilization is got up
Device.Device for recovering oil and gas is by adopting one or two methods in the technique such as absorption and sorption or condensation, or reduction oil gas
Pollution, or oil gas is changed into liquid from gaseous state, is changed into again the oil product that can have, reaches the purpose of recycling.
Petroleum vapor recovery is energy saving and environment friendly new and high technology, with Investigation of Petroleum Vapor Recovery Technology reclaim oil product in accumulating, loaded and unloaded
The oil gas discharged in journey, prevents the atmosphere pollution that oil gas volatilization is caused, eliminates safe hidden trouble, by improving the utilization to the energy
Rate, reduces economic loss, so as to obtain considerable benefit return.At present common method have absorption method, absorption process, condensation method and
Membrane separation process.
Wherein absorption method is the absorption using adsorbents such as activated carbon, silica gel or activated fibres to oil gas/air gaseous mixture
The size of power, realizes the separation of oil gas and air.Particularly by adsorbents such as activated carbons, oil-gas component adsorbs in adsorbent table
Face, then again through decompression desorption or steam desorption, the oil gas vavuum pump of enrichment is drawn into relevant or is liquefied with additive method；
And the adsorbent such as activated carbon is very little to the absorption affinity of air, tail gas Jing emission by exhaust pipe not to be adsorbed.
Existing gas recovery system for oil and oil-gas recovery method high energy consumption, recovering effect be poor, inefficient.
The content of the invention
The technical problem to be solved in the present invention is to provide the good gas recovery system for oil of a kind of organic efficiency height, recovering effect.
Another object is to provide a kind of method for carrying out petroleum vapor recovery using above-mentioned gas recovery system for oil.
In order to solve above-mentioned technical problem, a kind of technical scheme that the present invention is adopted is：A kind of gas recovery system for oil, including
First adsorption tower to the 4th adsorption tower, vavuum pump, air inlet pipeline, gas exhaust piping and regeneration air pipe, first adsorption tower and
Second adsorption tower constitutes first order absorption group, and the 3rd adsorption tower and the 4th adsorption tower constitute second level absorption group,
The air inlet pipeline is included for the air inlet of oil gas being input into gas recovery system for oil, connecting the first adsorption column inlet respectively
Switch pipeline to the 4th pipeline and first to the first pipeline of the 4th adsorption column inlet, first pipeline and the second pipeline are simultaneously
It is connected with air inlet after connection, is connected with one end of the first switching pipeline after the 3rd pipeline and the parallel connection of the 4th pipeline, described the
The other end of one switching pipeline is connected with air inlet；
The gas exhaust piping includes exhaust outlet, connects the 5th pipeline of the first adsorption column outlet to the 4th adsorption column outlet respectively extremely
8th pipeline and the second switching pipeline to the 4th switching pipeline, cut with second after the 5th pipeline and the parallel connection of the 6th pipeline
The one end for changing pipeline is connected, and is connected with one end of the 3rd switching pipeline after the 7th pipeline and the parallel connection of the 8th pipeline, and described the
Four switching pipelines one end be connected with exhaust outlet, it is described second switching pipeline the other end, the 3rd switch pipeline the other end with
And the 4th switching pipeline other end three be connected；
The regeneration air pipe is included for collecting the regeneration gas outlet of the oil product for reclaiming, connecting the first adsorption column inlet respectively extremely
9th pipeline to the 12nd pipeline of the 4th adsorption column inlet and the 5th switching pipeline, the 9th pipeline is to the 12nd pipeline
It is connected with one end of the 5th switching pipeline after parallel connection, the other end of the 5th switching pipeline is connected with regeneration gas outlet；
First pipeline is disposed with the first valve for being capable of break-make to the 12nd pipeline to the 12nd valve；Described
Being disposed with one switching pipeline to the 3rd switching pipeline and the 5th switching pipeline being capable of break-make switching oil gas circulation path
The first switching valve to the 3rd switching valve and the 5th switching valve；
The vavuum pump is arranged on the 5th switching pipeline and which is connected with the 5th switching valve and regeneration gas outlet respectively, described true
Empty pump can aspirate the oil product in the 5th switching pipeline and export from regeneration gas outlet.
Preferably, the gas recovery system for oil is also including the 6th switching pipeline, one end difference of the 6th switching pipeline
With the 5th pipeline away from the first adsorption column outlet one end and the 6th pipeline be connected away from one end of the second adsorption column outlet, institute
State the 6th switching pipeline the other end respectively with the 3rd pipeline away from the 3rd adsorption column inlet one end and the 4th pipeline away from
One end connection of the 4th adsorption column inlet, is provided with the 6th switching valve on the 6th switching pipeline.
Further, the gas recovery system for oil has single mode, series model and paralleling model, when petroleum vapor recovery system
When system is in single mode, the first order absorption group work, the second level absorption group quit work, first switching
Valve, the 3rd switching valve and the 6th switching valve are closed, and second switching valve is opened；When gas recovery system for oil is in series model
When, the first order absorption group and second level absorption group work, and first switching valve and the second switching valve are closed, and described the
Three switching valves and the 6th switching valve are opened；When gas recovery system for oil is in paralleling model, the first order absorption group and second
Level absorption group works, and first switching valve, the second switching valve and the 3rd switching valve are opened, and the 6th switching valve is closed.
Preferably, the gas recovery system for oil also include purging loading line, the purging loading line include for
First blowing mouth of first order absorption group input inert gas, the second gas transmission for inert gas is input into second level absorption group
Mouth, the 13rd pipeline to the 16th pipeline for being sequentially connected the first adsorption column outlet to the 4th adsorption column outlet, the described 13rd
It is connected with the first blowing mouth after pipeline and the parallel connection of the 14th pipeline, with second after the 15th pipeline and the parallel connection of the 16th pipeline
Blowing mouth is connected, and is disposed with and is capable of the 13rd valve of break-make to the 16th on the 13rd pipeline to the 16th pipeline
Valve.
Further, the inert gas is nitrogen, and the temperature of the nitrogen is 30 DEG C to 100 DEG C.
Further, the gas recovery system for oil also includes pressure relief pipeline, the pressure relief pipeline and the 5th switching pipeline simultaneously
Connection, is provided with the 7th switching valve that break-make switches oil gas circulation path on the pressure relief pipeline.
Preferably, direct-operated regulator is provided with the 4th switching pipeline, the direct-operated regulator can make the
Air pressure Automatic adjusument in one adsorption tower to the 4th adsorption tower.
Further, the two ends of the direct-operated regulator are also parallel with the 4th switching valve, and the 4th switching valve can
Break-make switches gas in pipeline by the 4th and discharges from exhaust outlet.
Preferably, the gas recovery system for oil also includes pressure relief pipeline, and the pressure relief pipeline is in parallel with the 5th switching pipeline,
The 7th switching valve that break-make switches oil gas circulation path is provided with the pressure relief pipeline.
A kind of oil-gas recovery method, it is characterised in that：Carried out at petroleum vapor recovery using gas recovery system for oil as above
Reason, operates first order absorption group and one group or two groups of work in second level absorption group, makes two absorption in the absorption group of work
Tower alternating sorbent oil gas, an adsorption tower carry out adsorption treatment to the oil gas into gas recovery system for oil, and another adsorption tower enters
Row parsing regeneration is processed and collects oil product of the absorption in tower body and reclaims,
The operating procedure that oil gas carries out adsorption treatment is included：
1.1) by the valve on the corresponding pipeline for carrying out between the entrance of the adsorption tower of adsorption treatment oil gas and air inlet open with
And outlet is opened with the valve on the corresponding pipeline between exhaust outlet and makes correspondence pipeline conducting；
1.2) by oil gas from air inlet input gas recovery system for oil in, allow adsorption treatment oil gas adsorption tower by the oil gas for passing through
Oil separate with air, wherein oil is attracted in adsorption tower, and air outlet successively from adsorption tower, exhaust outlet are discharged into air
In；
Carrying out parsing the operating procedure that regeneration processes to the adsorption tower of adsorption saturation includes：
2.1) by the pipeline and the pipeline between outlet and exhaust outlet between the entrance and air inlet of the adsorption tower of parsing regeneration
On valve closing make correspondence pipeline be turned off；
2.2) process is exhausted to the adsorption tower of parsing regeneration, the 5th switching valve is closed makes the 5th switching pipeline
Shut-off, the 7th switching valve is opened makes the pressure relief pipeline conducting, by the entrance and relief tube of the adsorption tower of parsing regeneration
The entrance of the adsorption tower that parsing regenerates and regeneration gas outlet conducting are opened and then made to valve on the pipeline of road connection, and parsing regenerates
Adsorption tower in residual gas from regeneration gas outlet release out, until parsing regeneration adsorption tower tower in air pressure near air
Pressure；
2.3) pumping process is carried out to the adsorption tower of parsing regeneration, the 5th switching valve is opened makes the 5th switching pipeline
Conducting, the 7th switching valve is closed makes the pressure relief pipeline shut-off, and the entrance of the adsorption tower of parsing regeneration is cut with the 5th
The entrance of the adsorption tower that parsing regenerates and regeneration gas outlet conducting are opened and then made to the valve changed on the pipeline of pipeline connection, opens
Vavuum pump is vacuumized to the adsorption tower of parsing regeneration, is attracted to adsorbent bed that oil product in adsorption tower departs from adsorption tower simultaneously
Reclaim from regeneration gas outlet, vavuum pump shut-off is stopped until parsing air pressure in the tower of the adsorption tower of regeneration and being close to absolute vacuum pressure
Only work；
2.4) purge is carried out to the adsorption tower of parsing regeneration, the 5th switching valve is closed makes the 5th switching pipeline
Shut-off, the 7th switching valve is opened makes the pressure relief pipeline conducting, by the entrance and relief tube of the adsorption tower of parsing regeneration
The entrance of the adsorption tower that parsing regenerates and regeneration gas outlet conducting are opened and then made to valve on the pipeline of road connection, will be with parsing
On pipeline between first blowing mouth/the second blowing mouth of adsorption tower correspondence connection and the adsorption column outlet of parsing regeneration of regeneration
Valve open, into the adsorption tower of parsing regeneration be blown into inert gas and make residual by the first blowing mouth/the second blowing mouth
Oil product further with adsorbent bed depart from, oil product by inert gas purge from regeneration gas outlet discharge, in adsorption tower adsorbent bed also by
Parsing reduction；
2.5) process is inflated to the adsorption tower of parsing regeneration, the 7th switching valve is closed closes the pressure relief pipeline
Disconnected, the valve closing on pipeline that the entrance of the adsorption tower of parsing regeneration is connected with pressure relief pipeline further makes the suction that parsing regenerates
The entrance of attached tower is closed, and is kept the first blowing mouth/the second blowing mouth of connection corresponding with the adsorption tower of parsing regeneration and is parsed again
Valve on pipeline between raw adsorption column outlet is opened, the suction regenerated to parsing by the first blowing mouth/the second blowing mouth
Continue to pour into inert gas in attached tower the atmospheric pressure value until the air pressure parsed in the adsorption tower of regeneration reaches setting, then will be with solution
The valve on pipeline between first blowing mouth of adsorption tower correspondence connection and the adsorption column outlet of parsing regeneration of analysis regeneration is closed
Close.
The scope of the present invention, however it is not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, while should also contain
Other technical schemes that lid is combined and is formed by above-mentioned technical characteristic or its equivalent feature.Such as features described above and sheet
(but not limited to) disclosed in application has technical scheme that the technical characteristic of similar functions replaced mutually and formed etc..
As above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：Using two groups of absorption groups
And pipeline is interconnected to form by multiple valves, have gas recovery system for oil and select two groups of works of single mode and paralleling model
Operation mode, can meet different oil vapor treatment demands.Only with a vavuum pump under two kinds of mode of operations, equipment throwing is reduced
Enter, reduce energy consumption.Petroleum vapor recovery effect of the present invention is good, efficiency high.
Description of the drawings
Fig. 1 is the structure principle chart of gas recovery system for oil of the present invention；
Wherein：A1, the first adsorption tower；A2, the second adsorption tower；A3, the 3rd adsorption tower；A4, the 4th adsorption tower；A5, self-operated type are adjusted
Section valve；A6, vavuum pump；A1, air inlet；B1, exhaust outlet；C1, the first blowing mouth；C2, the second blowing mouth；D1, regeneration gas outlet；
1st, the first pipeline；2nd, the second pipeline；3rd, the 3rd pipeline；4th, the 4th pipeline；5th, the 5th pipeline；6th, the 6th pipeline；7th, the 7th
Pipeline；8th, the 8th pipeline；9th, the 9th pipeline；10th, the tenth pipeline；11st, the 11st pipeline；12nd, the 12nd pipeline；13rd, the ten three
Pipeline；14th, the 14th pipeline；15th, the 15th pipeline；16th, the 16th pipeline；
21st, the first switching pipeline；22nd, the second switching pipeline；23rd, the 3rd switching pipeline；24th, the 4th switching pipeline；25th, the 5th cut
Change pipeline；26th, the 6th switching pipeline；
101st, the first valve；102nd, the second valve；103rd, the 3rd valve；104th, the 4th valve；105th, the 5th valve；106th, the 6th
Valve；107th, the 7th valve；108th, the 8th valve；109th, the 9th valve；110th, the tenth valve；111st, the 11st valve；112、
12nd valve；113rd, the 13rd valve；114th, the 14th valve；115th, the 15th valve；116th, the 16th valve；
201st, the first switching valve；202nd, the second switching valve；203rd, the 3rd switching valve；204th, the 4th switching valve；205th, the 5th switching
Valve；206th, the 6th switching valve；207th, the 7th switching valve.
Specific embodiment
As shown in figure 1, a kind of gas recovery system for oil of the present invention, including the first adsorption towers of adsorption tower A1 to the 4th
A4, vavuum pump A6, air inlet pipeline, gas exhaust piping, regeneration air pipe, the 6th switching pipeline 26, purging loading line and relief tube
Road.The first adsorption tower A1 and the second adsorption tower A2 constitutes first order absorption group, the absorption of the 3rd adsorption tower A3 and the 4th
Tower A4 constitutes second level absorption group.
The air inlet pipeline is included for the air inlet a1 of oil gas, the first absorption of connection respectively are input into gas recovery system for oil
First pipeline, 1 to the 4th pipeline 4 of tower A1 entrances to the 4th adsorption tower A4 entrances and the first switching pipeline 21.The first pipe
It is connected with air inlet a1 after 2 parallel connection of road 1 and the second pipeline.With the first switching pipe after 3rd pipeline 3 and 4 parallel connection of the 4th pipeline
The one end on road 21 is connected.The other end of the first switching pipeline 21 is connected with air inlet a1.First pipeline 1 to the 4th is managed
101 to the 4th valve 104 of the first valve for being capable of break-make is disposed with road 4.It is provided with the first switching pipeline 21
It is capable of the first switching valve 201 of break-make switching oil gas circulation path.
The gas exhaust piping include exhaust outlet b1, connect respectively the first adsorption tower A1 be exported to the 4th adsorption tower A4 outlet
5th pipeline, 5 to the 8th pipeline 8, and second switching pipeline 22 to the 4th switching pipeline 24.5th pipeline 5 and the 6th pipe
It is connected with one end of the second switching pipeline 22 after 6 parallel connection of road.With the 3rd switching after 7th pipeline 7 and 8 parallel connection of the 8th pipeline
One end of pipeline 23 is connected.One end of the 4th switching pipeline 24 is connected with exhaust outlet b1.The second switching pipeline 22
The other end three of the other end, the other end of the 3rd switching pipeline 23 and the 4th switching pipeline 24 is connected.5th pipeline 5
105 to the 8th valve 108 of the 5th valve for being capable of break-make is disposed with to the 8th pipeline 8.The second switching pipeline 22
Switch with the 3rd and on pipeline 23, be respectively arranged with the second switching valve 203 and the 3rd switching for being capable of break-make switching oil gas circulation path
Valve 203.Direct-operated regulator A5 is provided with the 4th switching pipeline 24, the direct-operated regulator A5 can make the first suction
Air pressure Automatic adjusument in the attached adsorption tower A4 of tower A1 to the 4th.Direct-operated regulator A5 is set in exhaust outlet b1, self-operated type is adjusted
There is spring structure above section valve A5, can allow adsorption tower that a level pressure in adsorption tower tower, is maintained when absorption work is carried out by adjusting
Power.For example arrange and keep the air pressure before direct-operated regulator A5 to be 0.5MPa, when pressure above is less than 0.5MPa, rely on oneself
Formula regulating valve A5 is closed, and when pressure above is higher than 0.5MPa, direct-operated regulator A5 is just opened.So, make
Molecular sieve, catalyst in adsorption tower tower keeps working under pressure, reaches best adsorption effect.
The two ends of the direct-operated regulator A5 are also parallel with the 4th switching valve 204, and the 4th switching valve 204 can be led to
It is disconnected that gas in 4th switching pipeline 24 is discharged from exhaust outlet b1.When the air pressure in adsorption tower tower it is relatively low so that direct-operated regulator
After A5 is closed, discharge to switch gas remaining in pipeline 24 by the 4th, the 4th switching valve 204 can be opened to realize.
The regeneration air pipe is included for collecting the regeneration gas outlet d1 of the oil product for reclaiming, connecting the first adsorption tower respectively
9th pipeline, 9 to the 12nd pipeline 12 of A1 entrances to the 4th adsorption tower A4 entrances and the 5th switching pipeline 25.Described 9th
Pipeline 9 is connected with one end of the 5th switching pipeline 25 to 12 parallel connection of the 12nd pipeline.Described 5th switches the another of pipeline 25
End is connected with regeneration gas outlet d1.The 9th valve for being capable of break-make is disposed with 9th pipeline, 9 to the 12nd pipeline 12
109 to the 12nd valves 112 of door.The 5th switching that break-make switches oil gas circulation path is provided with 5th switching pipeline 25
Valve 205.The vavuum pump A6 is arranged on the 5th switching pipeline 25 and which exports d1 with the 5th switching valve 205 and regeneration gas respectively
Connection, the vavuum pump A6 can aspirate the oil product in the 5th switching pipeline 25 and from regeneration gas outlet d1 outputs.The release
Pipeline is in parallel with the 5th switching pipeline 25, and the 7th that break-make switching oil gas circulation path is provided with the pressure relief pipeline cuts
Change valve 207.
One end for exporting away from the first adsorption tower A1 with the 5th pipeline 5 respectively of one end of the 6th switching pipeline 26 and
One end that 6th pipeline 6 is exported away from the second adsorption tower A2 connects, and the other end of the 6th switching pipeline 26 is respectively with the 3rd
Pipeline 3 away from the 3rd adsorption tower A3 entrances one end and the 4th pipeline 4 away from the 4th adsorption tower A4 entrances one end connect, institute
State the 6th switching valve 206 is provided with the 6th switching pipeline 26.
The purging loading line is included for the first blowing mouth c1 of inert gas being input into first order absorption group, being used for
The second blowing mouth c2 of inert gas is input into, the first adsorption tower A1 is sequentially connected and is exported to the 4th adsorption tower to second level absorption group
13rd pipeline, 13 to the 16th pipeline 16 of A4 outlets.With first after 13rd pipeline 13 and 14 parallel connection of the 14th pipeline
Blowing mouth c1 is connected.It is connected with the second blowing mouth c2 after 15th pipeline 15 and 16 parallel connection of the 16th pipeline.Described tenth
103 to the 16th valve 106 of the 13rd valve for being capable of break-make is disposed with three pipelines, 13 to the 16th pipeline 16.This reality
Apply in example, the inert gas is nitrogen, and the temperature of the nitrogen is 30 DEG C to 100 DEG C.
Gas recovery system for oil of the present invention has single mode, series model and paralleling model.When petroleum vapor recovery system
When system is in single mode, the first order absorption group work, the second level absorption group quit work, first switching valve
201st, the 3rd switching valve 203 and the 6th switching valve 206 are closed, and second switching valve 202 is opened；
When gas recovery system for oil is in series model, the first order absorption group and second level absorption group work, and described the
One switching valve 201 and the second switching valve 202 are closed, and the 3rd switching valve 203 and the 6th switching valve 206 are opened；
When gas recovery system for oil is in paralleling model, the first order absorption group and second level absorption group work, and described the
One switching valve 201, the second switching valve 202 and the 3rd switching valve 203 are opened, and the 6th switching valve 206 is closed.
As such, it is possible to capacity of the content of the oil gas for processing as needed, oil gas etc. is determining the work of gas recovery system for oil
Operation mode.If the process to oil gas can be completed by primary adsorption group, single mode can be selected, i.e., only open first order suction
Attached group is processed to oil gas.If, it is desirable to preferable adsorption effect is obtained, series model can be selected, will first order suction
Attached group and the series connection of second level absorption group, Jing first order absorption group and second level absorption group are processed successively to make oil gas, will oil gas Jing
Adsorb after twice, adsorb more thorough.If it is intended to improving absorption operating efficiency, paralleling model can be selected, will the first order
Absorption group and second level absorption group open work simultaneously, allow oil gas to be divided to two groups to be processed, so, the oil processed in the unit interval
Tolerance is greatly increased, the time of the oil vapor treatment of shortening, improves the efficiency of oil vapor treatment.
In the present embodiment, vavuum pump A6 is frequency conversion type vavuum pump, and such a vavuum pump disclosure satisfy that gas recovery system for oil
In single mode, the service requirement of three patterns of series model and paralleling model, equipment investment is reduced, energy consumption is reduced.
A kind of oil-gas recovery method of the present invention, is carried out at petroleum vapor recovery using above-mentioned gas recovery system for oil
Reason.One group or two groups of work in operation first order absorption group and second level absorption group, make two absorption in the absorption group of work
Tower alternating sorbent oil gas, an adsorption tower carry out adsorption treatment to the oil gas into gas recovery system for oil, and another adsorption tower enters
Row parsing regeneration is processed and collects oil product of the absorption in tower body and reclaims.Below by taking the work of first order absorption group as an example, it is situated between
Continue the specific course of work：
As described in upper table, the first adsorption tower A1 carries out adsorption treatment to oil gas, while the second adsorption tower to adsorption saturation
The operating procedure that A2 carries out parsing regeneration process is as follows：
1.1) opening the first valve 101, the 5th valve 105 and the second switching valve 202 makes correspondence pipeline conducting；
1.2) by oil gas from air inlet a1 input gas recovery system for oil in, allow the first adsorption tower A1 by the oil in the oil gas for passing through with
Air is separated, and wherein oil is attracted in the first adsorption tower A1, air outlet successively from the first adsorption tower A1, exhaust outlet b1 rows
It is put in air；
2.1) keeping the second valve 102, the 6th valve 106 to close is turned off correspondence pipeline；
2.2) process is exhausted to the second adsorption tower A2, the 5th switching valve 205 is closed makes the 5th switching pipeline
25 shut-offs, the 7th switching valve 207 is opened makes the pressure relief pipeline conducting, will parse the entrance of the adsorption tower of regeneration and unloads
The entrance and regeneration gas outlet d1 conductings, solution of the adsorption tower that parsing regenerates is opened and then made to valve on the pipeline of pressure pipe road connection
In the adsorption tower of analysis regeneration, the gas of residual is released out from regeneration gas outlet d1, until air pressure in the tower of the adsorption tower of parsing regeneration
Near atmospheric pressure, i.e. absolute pressure 101KPa or so, prevent vavuum pump A6 inlet pressures too high, damage vavuum pump A6.
2.3) pumping process is carried out to the second adsorption tower A2, the 5th switching valve 205 is opened makes the 5th switching
Pipeline 25 is turned on, and the 7th switching valve 207 is closed makes the pressure relief pipeline shut-off, and the tenth valve 110 is opened and then made
The entrance of the second adsorption tower A2 and regeneration gas outlet d1 conductings, open vavuum pump A6 and the second adsorption tower A2 are vacuumized, quilt
Adsorb and depart from the adsorbent bed in the second adsorption tower A2 in the oil product in the second adsorption tower A2 and reclaim from regeneration gas outlet d1, until
In the tower of the second adsorption tower A2, air pressure is close to absolute vacuum pressure, i.e. absolute pressure 100Pa or so, then turns off vavuum pump A6
Quit work；
2.4) purge is carried out to the second adsorption tower A2, the 5th switching valve 205 is closed makes the 5th switching pipeline
25 shut-offs, the 7th switching valve 207 is opened makes pressure relief pipeline conducting, keeps the tenth valve 110 to open and then make the
The entrance of two adsorption tower A2 and regeneration gas outlet d1 conductings, the 14th valve 114 is opened, by the first blowing mouth c1 to second
Hot nitrogen is blown in adsorption tower A2 makes the oil product of residual further depart from adsorbent bed, and oil product is gone out from regeneration gas by hot nitrogen purging
Mouth d1 is discharged, and in the second adsorption tower A2, adsorbent bed is also resolved reduction；
2.5) process is inflated to the second adsorption tower A2, the 7th switching valve 207 is closed makes the pressure relief pipeline shut-off,
Tenth valve 110 is closed and then closes the entrance of the second adsorption tower A2, keep the 14th valve 114 to open, by first
Blowing mouth c1 continues to pour into hot nitrogen into the second adsorption tower A2 the air pressure until the air pressure in the second adsorption tower A2 reaches setting
Then 14th valve 114 is closed by value.This step is mainly prepared for the work of next cycle, the first adsorption tower A1
Adsorption treatment working condition is still within, and the second adsorption tower A2 regeneration parsings are also over, but if the second adsorption tower A2
Interior no pressure (absolute pressure 101KPa or so), and directly carry out the work of next cycle, then in the second adsorption tower A2
Catalyst impact it is excessive, then certain nitrogen is filled with to the second adsorption tower A2 now so as in barotropic state, about 0.4MPa
Left and right), so as to the work for next cycle is ready.
As described above, we are illustrated fully according to spirit of the invention, but the present invention is not limited to above-mentioned reality
Apply example and implementation.The practitioner of correlative technology field can carry out different in the range of the license of the technological thought of the present invention
Change and enforcement.
Claims (10)
1. a kind of gas recovery system for oil, it is characterised in that：The gas recovery system for oil includes the first adsorption tower（A1）Inhale to the 4th
Attached tower（A4）, vavuum pump（A6）, air inlet pipeline, gas exhaust piping and regeneration air pipe, first adsorption tower（A1）Inhale with second
Attached tower（A2）Constitute first order absorption group, the 3rd adsorption tower（A3）With the 4th adsorption tower（A4）Second level absorption group is constituted,
The air inlet pipeline is included for the air inlet to gas recovery system for oil input oil gas（a1）, connect the first adsorption tower respectively
（A1）Entrance is to the 4th adsorption tower（A4）First pipeline of entrance（1）To the 4th pipeline（4）And first switching pipeline（21）, institute
State the first pipeline（1）With the second pipeline（2）With air inlet after parallel connection（a1）It is connected, the 3rd pipeline（3）With the 4th pipeline（4）
With the first switching pipeline after parallel connection（21）One end be connected, it is described first switching pipeline（21）The other end and air inlet（a1）Phase
Even；
The gas exhaust piping includes exhaust outlet（b1）, connect the first adsorption tower respectively（A1）It is exported to the 4th adsorption tower（A4）Outlet
The 5th pipeline（5）To the 8th pipeline（8）, and second switching pipeline（22）To the 4th switching pipeline（24）, the 5th pipe
Road（5）With the 6th pipeline（6）With the second switching pipeline after parallel connection（22）One end be connected, the 7th pipeline（7）With the 8th pipe
Road（8）With the 3rd switching pipeline after parallel connection（23）One end be connected, it is described 4th switching pipeline（24）One end and exhaust outlet
（b1）It is connected, the second switching pipeline（22）The other end, the 3rd switching pipeline（23）The other end and the 4th switching pipe
Road（24）Other end three be connected；
The regeneration air pipe includes exporting for the regeneration gas for collecting the oil product for reclaiming（d1）, connect the first adsorption tower respectively
（A1）Entrance is to the 4th adsorption tower（A4）9th pipeline of entrance（9）To the 12nd pipeline（12）And the 5th switching pipeline
（25）, the 9th pipeline（9）To the 12nd pipeline（12）With the 5th switching pipeline after parallel connection（25）One end be connected, described the
Five switching pipelines（25）The other end and regeneration gas export（d1）It is connected；
First pipeline（1）To the 12nd pipeline（12）On be disposed with the first valve for being capable of break-make（101）To the tenth
Two valves（112）；
The first switching pipeline（21）To the 3rd switching pipeline（23）And the 5th switching pipeline（25）On be disposed with energy
Enough break-makes switch the first switching valve of oil gas circulation path（201）To the 3rd switching valve（203）And the 5th switching valve（205）；
The vavuum pump（A6）It is arranged on the 5th switching pipeline（25）It is upper and its respectively with the 5th switching valve（205）Go out with regeneration gas
Mouthful（d1）Connection, the vavuum pump（A6）The 5th switching pipeline can be aspirated（25）In oil product and from regeneration gas export（d1）It is defeated
Go out.
2. a kind of gas recovery system for oil according to claim 1, it is characterised in that：The gas recovery system for oil also includes the
Six switching pipelines（26）, the 6th switching pipeline（26）One end respectively with the 5th pipeline（5）Away from the first adsorption tower（A1）
One end of outlet and the 6th pipeline（6）Away from the second adsorption tower（A2）One end connection of outlet, the 6th switching pipeline
（26）The other end respectively with the 3rd pipeline（3）Away from the 3rd adsorption tower（A3）One end of entrance and the 4th pipeline（4）Away from
4th adsorption tower（A4）One end connection of entrance, the 6th switching pipeline（26）On be provided with the 6th switching valve（206）.
3. a kind of gas recovery system for oil according to claim 2, it is characterised in that：The gas recovery system for oil has single-stage
Pattern, series model and paralleling model, when gas recovery system for oil is in single mode, the first order absorption group work, institute
State second level absorption group to quit work, first switching valve（201）, the 3rd switching valve（203）With the 6th switching valve（206）Close
Close, second switching valve（202）Open；When gas recovery system for oil is in series model, the first order absorption group and the
Secondary absorption group works, first switching valve（201）With the second switching valve（202）Close, the 3rd switching valve（203）
With the 6th switching valve（206）Open；When gas recovery system for oil is in paralleling model, the first order absorption group and the second level are inhaled
Attached group works, first switching valve（201）, the second switching valve（202）With the 3rd switching valve（203）Open, the described 6th
Switching valve（206）Close.
4. a kind of gas recovery system for oil according to claim 1, it is characterised in that：The gas recovery system for oil also includes blowing
Loading line is swept, the purging loading line is included for the first blowing mouth to first order absorption group input inert gas
（c1）, for second level absorption group be input into inert gas the second blowing mouth（c2）, be sequentially connected the first adsorption tower（A1）Go out
Mouth is to the 4th adsorption tower（A4）13rd pipeline of outlet（13）To the 16th pipeline（16）, the 13rd pipeline（13）With
14 pipelines（14）With the first blowing mouth after parallel connection（c1）It is connected, the 15th pipeline（15）With the 16th pipeline（16）It is in parallel
Afterwards with the second blowing mouth（c2）It is connected, the 13rd pipeline（13）To the 16th pipeline（16）On be disposed with being capable of break-make
The 13rd valve（103）To the 16th valve（106）.
5. a kind of gas recovery system for oil according to claim 4, it is characterised in that：The inert gas is nitrogen, described
The temperature of nitrogen is 30 DEG C to 100 DEG C.
6. a kind of gas recovery system for oil according to claim 1, it is characterised in that：The gas recovery system for oil also includes unloading
Pressure pipe road, the pressure relief pipeline and the 5th switching pipeline（25）Parallel connection, is provided with break-make switching oil on the pressure relief pipeline
7th switching valve in current path footpath（207）.
7. a kind of gas recovery system for oil according to claim 1, it is characterised in that：The 4th switching pipeline（24）In set
It is equipped with direct-operated regulator（A5）, the direct-operated regulator（A5）The first adsorption tower can be made（A1）To the 4th adsorption tower（A4）
In air pressure Automatic adjusument.
8. a kind of gas recovery system for oil according to claim 7, it is characterised in that：The direct-operated regulator（A5）Two
End is also parallel with the 4th switching valve（204）, the 4th switching valve（204）Can break-make by the 4th switch pipeline（24）Middle gas
From exhaust outlet（b1）Discharge.
9. a kind of gas recovery system for oil according to claim 4, it is characterised in that：The gas recovery system for oil also includes unloading
Pressure pipe road, the pressure relief pipeline and the 5th switching pipeline（25）Parallel connection, is provided with break-make switching oil on the pressure relief pipeline
7th switching valve in current path footpath（207）.
10. a kind of oil-gas recovery method, it is characterised in that：Oil gas is carried out using gas recovery system for oil as claimed in claim 9
Recycling, operates first order absorption group and one group or two groups of work in second level absorption group, makes two in the absorption group of work
Individual adsorption tower alternating sorbent oil gas, an adsorption tower carry out adsorption treatment to the oil gas into gas recovery system for oil, another suction
Attached tower carries out parsing regeneration process and collecting oil product of the absorption in tower body reclaiming,
The operating procedure that oil gas carries out adsorption treatment is included：
1.1）The entrance and air inlet of the adsorption tower of adsorption treatment oil gas will be carried out（a1）Between corresponding pipeline on valve beat
Open and export and exhaust outlet（b1）Between corresponding pipeline on valve open make correspondence pipeline conducting；
1.2）By oil gas from air inlet（a1）In input gas recovery system for oil, allow adsorption treatment oil gas adsorption tower by the oil for passing through
Oil in gas is separated with air, and wherein oil is attracted in adsorption tower, air outlet successively from adsorption tower, exhaust outlet（b1）Row
It is put in air；
Carrying out parsing the operating procedure that regeneration processes to the adsorption tower of adsorption saturation includes：
2.1）By the entrance and air inlet of the adsorption tower of parsing regeneration（a1）Between pipeline and outlet and exhaust outlet（b1）It
Between pipeline on valve closing make correspondence pipeline be turned off；
2.2）Process is exhausted to the adsorption tower of parsing regeneration, by the 5th switching valve（205）Closing makes the described 5th to cut
Change pipeline（25）Shut-off, by the 7th switching valve（207）Opening makes the pressure relief pipeline conducting, by the adsorption tower of parsing regeneration
The pipeline that is connected with pressure relief pipeline of entrance on valve open and then make the entrance of adsorption tower of parsing regeneration to go out with regeneration gas
Mouthful（d1）Conducting, the gas for parsing residual in the adsorption tower of regeneration are exported from regeneration gas（d1）Release out, until parsing regeneration
In the tower of adsorption tower, air pressure is near atmospheric pressure；
2.3）Pumping process is carried out to the adsorption tower of parsing regeneration, by the 5th switching valve（205）Opening makes the described 5th to cut
Change pipeline（25）Conducting, by the 7th switching valve（207）Closing makes the pressure relief pipeline shut-off, by the adsorption tower of parsing regeneration
Entrance and the 5th switching pipeline（25）Valve on the pipeline of connection open so that make parsing regeneration adsorption tower entrance with
Regeneration gas is exported（d1）Conducting, opens vavuum pump（A6）The adsorption tower of parsing regeneration is vacuumized, adsorption tower is attracted to
Interior oil product departs from the adsorbent bed in adsorption tower and exports from regeneration gas（d1）Reclaim, until gas in the tower of the adsorption tower of parsing regeneration
Nearly absolute vacuum pressure is crimped by vavuum pump（A6）Shut-off quits work；
2.4）Purge is carried out to the adsorption tower of parsing regeneration, by the 5th switching valve（205）Closing makes the described 5th to cut
Change pipeline（25）Shut-off, by the 7th switching valve（207）Opening makes the pressure relief pipeline conducting, by the adsorption tower of parsing regeneration
The pipeline that is connected with pressure relief pipeline of entrance on valve open and then make the entrance of adsorption tower of parsing regeneration to go out with regeneration gas
Mouthful（d1）Conducting, by the first blowing mouth of connection corresponding with the adsorption tower of parsing regeneration（c1）/ the second blowing mouth（c2）And parsing
Valve on pipeline between the adsorption column outlet of regeneration is opened, by the first blowing mouth（c1）/ the second blowing mouth（c2）Xiang Xie
Inert gas is blown in the adsorption tower of analysis regeneration makes the oil product of residual further depart from adsorbent bed, and oil product is by inert gas purge
Export from regeneration gas（d1）Discharge, in adsorption tower, adsorbent bed is also resolved reduction；
2.5）Process is inflated to the adsorption tower of parsing regeneration, by the 7th switching valve（207）Closing makes the relief tube
Road turns off, and the valve closing on pipeline that the entrance of the adsorption tower of parsing regeneration is connected with pressure relief pipeline further regenerates parsing
The entrance of adsorption tower close, keep the first blowing mouth of the corresponding connection of adsorption tower regenerated with parsing（c1）/ the second blowing mouth
（c2）And the valve on the pipeline between the adsorption column outlet of parsing regeneration is opened, by the first blowing mouth（c1）/ the second gas transmission
Mouthful（c2）Continue to pour into inert gas until the air pressure in the adsorption tower of parsing regeneration reaches and sets into the adsorption tower of parsing regeneration
Fixed atmospheric pressure value, then by the first blowing mouth of connection corresponding with the adsorption tower of parsing regeneration（c1）/ the second blowing mouth（c2）With
The valve closing on pipeline between the adsorption column outlet of parsing regeneration.
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| CN112129018A (en) * | 2020-10-19 | 2020-12-25 | 中国科学院理化技术研究所 | Combined cold accumulator and liquid air energy storage system |
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