CN102764562A - Absorption oil-gas recycling system and absorption oil-gas recycling process - Google Patents
Absorption oil-gas recycling system and absorption oil-gas recycling process Download PDFInfo
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- CN102764562A CN102764562A CN2012102654097A CN201210265409A CN102764562A CN 102764562 A CN102764562 A CN 102764562A CN 2012102654097 A CN2012102654097 A CN 2012102654097A CN 201210265409 A CN201210265409 A CN 201210265409A CN 102764562 A CN102764562 A CN 102764562A
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Abstract
The invention relates to an absorption oil-gas recycling system and an absorption oil-gas recycling process. The system comprises an absorption device, a desorption device, an intake device and a storage device, which are connected with one another. The absorption device and the desorption device are more first-staged. By the absorption oil-gas recycling system, the recycling process by combining multistage absorption and desorption is achieved, the problems of pollution and waste of hydrocarbon components in oil and gas are solved, external environment is protected effectively, and energy is utilized efficiently and economically. The absorption oil-gas recycling system is suitable for popularization and application in related oil-gas recycling fields, especially suitable for fields such as lean oil recycling and reusing and crude oil-gas recycling and reusing.
Description
Technical field
The present invention relates to a kind of oil gas recovery and processing system and recovery processing technique thereof, relate in particular to a kind of absorption type oil gas recovery and processing system and recovery processing technique thereof.
Background technology
At present, in processes such as oil extraction, processed and applied, basically all produce with oil gas; The loss of these oil gas or burning mainly contain the influence of two aspects, cause a large amount of light oil energy wastes on the one hand, cause environmental pollution on the other hand; Especially air pollution; Relevant the healthy of crowd had a strong impact on, therefore, need the technology that can effectively recycle these oil gas of researching and developing out badly.
In the prior art, patent CN201626827U provides a kind of condensation method gas recovery system for oil, can be applicable to the recovery of the lower volatility oil gas of the phosphorus content such as crude oil and gasoline of occasions such as gas station, oil depot and oil field.This system comprises I level condenser, I stage compressor, I level cooler, II level condenser, II level cooler and III level condenser, and is respectively the refrigeration system that at different levels grades of condensers provide cold; It can be divided into several kinds of different gas recovery system for oil according to the layout difference of compressor between condenser.This system adopts the technical scheme of three grades of condensations, middle pressurization and tail gas recycle; Make the oil gas that evaporates be able to reclaim, energy-saving effect is better, still; The setting of this system's multi-stage condensing; Have the problem that power consumption is big, device distribution is complicated, environmental requirement is high, cost is high inevitably, suitable applying especially is being not suitable for application aspect the large-scale recovery of crude oil vapor.
Summary of the invention
The objective of the invention is; Problem to prior art exists provides a kind of absorption type oil gas recovery and processing system and recovery processing technique thereof, designs according to absorption principle; Realization is handled the high efficiente callback of crude oil vapor, reaches effects of energy conservation and environmental protection with setting low-cost, that optimize.
The technical scheme that the present invention deals with problems is: a kind of absorption type oil gas recovery and processing system comprises interconnective adsorbent equipment, desorption apparatus, absorption plant and storage device; Said adsorbent equipment is the above adsorbent equipment of one-level, and said desorption apparatus is the above desorption apparatus of one-level.
Further, said absorption type oil gas recovery and processing system also comprises the control system and by the oil gas input system of said control system control, said adsorbent equipment is connected with said oil gas input system.
Further:
Said absorption plant comprises absorption tower and the absorbent feedway that is connected with said absorption tower;
Said adsorbent equipment is the secondary absorption device, comprises interconnective first order adsorbent equipment and second level adsorbent equipment;
Said desorption apparatus is the secondary desorption apparatus, comprises the first order desorption apparatus and the second level desorption apparatus that are connected with said absorption tower respectively;
Said first order adsorbent equipment is connected respectively with first order desorption apparatus and absorption tower, and said second level adsorbent equipment is connected with said second level desorption apparatus;
Said storage device comprises fluid storage device and gas storage device, and said fluid storage device is connected with said absorption tower, and said atmosphere storage device is connected with said second level desorption apparatus.
Further, the bottom of said first order adsorbent equipment is connected with the top on said absorption tower through the oil gas input channel, and the top of said first order adsorbent equipment is connected with the bottom of said second level adsorbent equipment through one-level absorption pipe-line.
Further; Said first order adsorbent equipment comprises two above first order adsorption towers; Said second level adsorbent equipment comprises two above second level adsorption towers; Said two above first order adsorption towers can carry out alternation down in the control of said control system, and said two above second level adsorption towers can carry out alternation under said control system controls.
Further, be provided with packing layer in the said absorption tower.
Further, said absorbent feedway comprises interconnective absorbent storage tank, absorbent delivery pump; Said fluid storage device is connected with said absorption tower through the absorption product rear pump.
Preferably, said fluid storage device and said absorbent storage tank are same device.
Further, be provided with the online concentration analyzer of measuring effluent concentration at the top exit place of each said first order adsorption tower and second level adsorption tower.
Further, said first order desorption apparatus and second level desorption apparatus are vavuum pump; Packing layer in the said absorption tower is the Pall ring packing layer; Be provided with activated carbon adsorption bed in each said first order adsorption tower and the second level adsorption tower.
Further, the two ends up and down of said adsorbent equipment are provided with input control valve and discharge control valve, and the pipeline that said adsorbent equipment is connected with said desorption apparatus is provided with the desorb control valve.Preferably; Each said first order adsorption tower all is connected with said oil gas input system with the top on said absorption tower respectively through the oil gas input channel, and the top of each said first order adsorption tower all is connected with the bottom of said second level adsorption tower through one-level absorption pipe-line; The bottom of each said first order adsorption tower and top are respectively arranged with oil gas input control valve and one-level absorption oil gas dump valve; The bottom of each said second level adsorption tower and top are respectively arranged with one-level absorption oil gas transfer valve and secondary absorption purified gas dump valve; Each said first order adsorption tower bottom all is connected with said first order desorption apparatus through first order desorb control valve; Each adsorption tower bottom, the said second level all is connected with said second level desorption apparatus through second level desorb control valve.
The present invention also provides a kind of absorption type oil gas recovery processing technique, under the control of control system, carries out, and comprises the steps:
(1) oil gas input
In adsorbent equipment, import oil gas through the oil gas input system;
(2) oil gas absorption
Adsorbent in the adsorbent equipment carries out adsorbing separation to the oil gas that gets into adsorbent equipment;
(3) adsorbate desorb
Through desorption apparatus the adsorbing separation product in the step (2) is carried out desorb;
(4) separated product is collected
Through the absorbent in the absorption plant desorb separated product of step (3) gained is absorbed back input storage device.
Further:
In step (1), the oil gas input system is input to adsorbent equipment with oil gas through the oil gas input channel;
In step (2), said adsorbent equipment is the secondary absorption device, and oil gas carries out the one-level adsorbing separation through first order adsorbent equipment with second level adsorbent equipment successively to be separated with secondary absorption;
In step (3), said desorption apparatus is the secondary desorption apparatus, and the one-level adsorbed product is carried out one-level desorb separation through first order desorption apparatus, and desorption apparatus carries out secondary desorb separation to the secondary absorption product through the second level;
In step (4); Said absorption plant comprises absorption tower and the absorbent feedway that is connected with said absorption tower; After the one-level desorb separated product of step (3) gained and secondary desorb separated product get into the absorption tower; From bottom to top through the packing layer in the absorption tower and with the absorbent counter current contacting that is input to by the absorbent feedway in the absorption tower; After absorbent absorbs, obtain liquid product and gaseous products, the gained liquid product gets into fluid storage device, and the gained gaseous products gets into oil gas input channel repeating step (1).
Further, in step (2), said first order adsorbent equipment comprises two first order adsorption towers, two first order adsorption towers one-level adsorbing separation that hockets; Said second level adsorbent equipment comprises two second level adsorption towers, and two second level adsorption towers secondary absorption that hockets is separated; In step (3), said first order desorption apparatus and second level desorption apparatus are vavuum pump; In step (4), the packing layer in the said absorption tower is the Pall ring packing layer.
Further, in step (2), be provided with the online concentration analyzer of measuring effluent concentration at the top exit place of each said first order adsorption tower and second level adsorption tower, the concentration that records effluent through online concentration analyzer analysis reaches 20g/m
3When above, change first order adsorption tower and/or the second level adsorption tower adsorb, when another first order adsorption tower and/or second level adsorption tower begin to adsorb, first order adsorption tower and/or the second level adsorption tower that changes carried out step (3); In step (2), be provided with activated carbon adsorption bed in each said first order adsorption tower and the second level adsorption tower, adsorbent is an active carbon; In step (4), said absorbent is gasoline, diesel oil or crude oil, makes itself and desorb separated product intersolubility good, is prone to realize that high absorption reclaims, and then improves the concentration of the oil gas product after reclaiming, and the oil gas product that also is beneficial to after the recovery utilizes again.
Further, in step (2), activated carbon of sorbent is process acid wash passivation active carbon processed, and its specific surface is 1,800,000 ~ 2,400, and 000m
2/ kg can also select pore structure and the corresponding adsorbents of specific surface such as silica gel, aluminium oxide, molecular sieve for use according to actual conditions; In step (3), the vacuum during said vavuum pump desorb is 80-90kpa; In step (4), the circular flow of said absorbent is 10m
3/ h-80m
3/ h.
Further; In step (2); Oil gas gets into through the bottom of one-level absorption pipe-line adsorbent equipment from the second level from first order adsorbent equipment top after the one-level adsorbing separation, carries out secondary absorption and separates, and separates back gained purified gas and discharges through secondary absorption purified gas dump valve; In step (4), secondary desorb separated product divides two parts to handle, and a part gets into the absorption tower and absorbed by absorbent, and another part directly gets into the atmosphere storage device, and said two-part ratio can be adjusted according to actual needs.
Further, in step (2), one-level adsorbing separation gained one-level adsorbed product is the hydrocarbon components of C4-C6 such as butane, pentane, hexane; The hydrocarbon components that the separating obtained secondary absorption product of secondary absorption is C2-C3 such as ethane, propane is in adsorption process, during the oil gas of adsorbent contact rising; Molecule bigger in the oil gas is adsorbed stop; Make that the hole of adsorbent is occupied, it is up that less molecule passes the adsorbent bed continuation in the oil gas, so; The one-level adsorbing separation mainly is that the big molecule in the oil gas is carried out adsorbing separation, and gained one-level adsorbed product is the hydrocarbon components of C4-C6 such as butane, pentane, hexane; Surplus component is carried out the secondary absorption separation again after the one-level adsorbing separation, makes less molecule obtain adsorbing separation, and gained secondary absorption product is the hydrocarbon components of C2-C3 such as ethane, propane.
In the absorption type oil gas recovery and processing system of the present invention, the setting of adsorbent equipment and desorption apparatus and absorption plant the circulating recycling of oil gas is fully realized, and effects of energy conservation and environmental protection is remarkable; When using absorption type oil gas recovery processing technique of the present invention, to the circulating absorption of the multi-stage alternate of oil gas, the abundant recovery of oil gas is protected in the said step (2), simultaneously, oil gas is purified be protected; In the said step (3),, the abundant recovery of oil gas is further ensured to the vacuum desorption of adsorbate; The employing of absorbent described in the said step (4) makes the oil gas product after the recovery be more prone to utilize again; Application the present invention reclaims the oil gas of hydrocarbon volume concentration 10%-50%, and the concentration that last gained purifies hydrocarbon in gas is less than 25g/m
3, can not pollute air, related work personnel and near resident's health there is not influence; The recycled in its entirety rate of oil gas reaches more than 95%.
Compared with prior art, the invention has the beneficial effects as follows:
1, novel and reasonable design of the present invention, the simple and environmental protection of technological process through the circulating recycling that multistage absorption and desorb combine, has fully realized the recovery of hydrocarbon components in the oil gas, has effectively avoided energy waste;
2, innovative design of the present invention; Simple operation is efficient; When making external environment obtain adequately protecting; Realized the efficient economizing of the energy, the oil gas that is suitable for relating in gas station, oil depot and oil field etc. former wet goods carbon containing hydrocarbon reclaims in the association area to be applied, and is particularly useful for that oil-poor absorption utilizes again, crude oil vapor recycling field.
Description of drawings
Fig. 1 is the structural representation of absorption type oil gas recovery and processing system of the present invention.
Shown in the figure: 1-oil gas input system, 2-first order adsorption tower, 3-second level adsorption tower, 4-first order desorb vavuum pump; 5-second level desorb vavuum pump, 6-absorption tower, 7-absorbent delivery pump, 8-absorbent storage tank; 9-absorption product rear pump, 10-atmosphere storage device, 11-oil gas input channel, 12-one-level absorption pipe-line; 13-oil gas input control valve, 14-one-level absorption oil gas dump valve, 15-one-level absorption oil gas transfer valve; 16-secondary absorption purified gas dump valve, 17-first order desorb control valve, 18-second level desorb control valve.
The specific embodiment
Embodiment 1
As shown in Figure 1, absorption type oil gas recovery and processing system of the present invention comprises control system (not shown) and by oil gas input system 1, interconnective adsorbent equipment, desorption apparatus, absorption plant and the storage device of said control system control; Said adsorbent equipment is connected with said oil gas input system 1; Wherein:
Said absorption plant comprises absorption tower 6 and the absorbent feedway that is connected with absorption tower 6, and said absorbent feedway comprises interconnective absorbent delivery pump 7, absorbent storage tank 8;
Said desorption apparatus is the secondary desorption apparatus, comprises the first order desorb vavuum pump 4 and second level desorb vavuum pump 5 that are connected with absorption tower 6 respectively;
Said storage device comprises fluid storage device and gas storage device 10, and said fluid storage device is connected with absorption tower 6 through absorption product rear pump 9, and said atmosphere storage device is connected with second level desorb vavuum pump 5;
Said adsorbent equipment is the secondary absorption device; Comprise interconnective first order adsorbent equipment and second level adsorbent equipment; Said first order adsorbent equipment is connected respectively with said oil gas input system 1, first order desorb vavuum pump 4 and absorption tower 6, and said second level adsorbent equipment is connected with second level desorb vavuum pump 5;
The bottom of said first order adsorbent equipment is connected with oil gas input system 1 with the top on absorption tower 6 respectively through oil gas input channel 11, and the top of said first order adsorbent equipment is connected with the bottom of said second level adsorbent equipment through one-level absorption pipe-line 12;
Said first order adsorbent equipment comprises two first order adsorption towers 2; Said second level adsorbent equipment comprises two second level adsorption towers 3;
Each first order adsorption tower 2 all is connected with oil gas input system 1 with the top on absorption tower 6 respectively through oil gas input channel 11, and the top of each first order adsorption tower 2 all is connected with the bottom of second level adsorption tower 3 through one-level absorption pipe-line 12;
The bottom of each first order adsorption tower 2 and top are respectively arranged with oil gas input control valve 13 and one-level absorption oil gas dump valve 14; Each first order adsorption tower 2 bottom all is connected with first order desorb vavuum pump 4 through first order desorb control valve 17;
The bottom of each second level adsorption tower 3 and top are respectively arranged with one-level absorption oil gas transfer valve 15 and secondary absorption purified gas dump valve 16; Each second level adsorption tower 3 bottom all is connected with second level desorb vavuum pump 5 through second level desorb control valve 18.
In the foregoing description:
Be provided with activated carbon adsorption bed in each first order adsorption tower 2 and the second level adsorption tower 3;
Top exit place at each first order adsorption tower 2 and second level adsorption tower 3 is provided with the online concentration analyzer (not shown) of measuring effluent concentration;
Two first order adsorption towers 2 can carry out alternation down in the control of said control system, and two second level adsorption towers 3 can carry out alternation down in the control of said control system, and uninterrupted continuous operation of process system fully ensured;
Be provided with Pall ring packing layer (not shown) in the absorption tower 6, the oil gas that absorbs desorb for absorbent provides the more favourable absorption space of dissolving each other;
Said fluid storage device and absorbent storage tank 8 are same device, are beneficial to the sorbent circulation utilization, and simultaneously, the concentration that also is beneficial to oil product increases.
Normal temperature crude oil vapor with hydrocarbon volume concentration 50% is recovered as example, uses absorption type oil gas recovery and processing system of the present invention and carries out crude oil vapor recycling, under the control of said control system, carries out, and comprises the steps:
(1) oil gas input
Oil gas input system 1 is input to adsorbent equipment with crude oil vapor through oil gas input channel 11 and oil gas input control valve 13;
(2) oil gas absorption
With the active carbon is adsorbent; Step (1) institute oil transportation gas carries out the one-level adsorbing separation through first order adsorption tower 2 with second level adsorption tower 3 interior activated carbon adsorption beds successively to be separated with secondary absorption; Oil gas gets into through the bottom of one-level absorption oil gas dump valve 14, one-level absorption pipe-line 12 and one-level absorption oil gas transfer valve 15 adsorption tower 3 from the second level from first order adsorption tower 2 tops after the one-level adsorbing separation; Carry out secondary absorption and separate, separate back gained purified gas and discharge through secondary absorption purified gas dump valve 16;
Wherein, according to the analyzing and testing of said online concentration analyzer, two first order adsorption towers 2 one-level adsorbing separation that hockets, two second level adsorption towers 3 secondary absorption that hockets is separated;
The concentration that records effluent through said online concentration analyzer analysis reaches 20g/m
3The time; First order adsorption tower 2 that replacing is adsorbed and/or second level adsorption tower 3; When another first order adsorption tower 2 and/or second level adsorption tower 3 begin to adsorb, first order adsorption tower 2 and/or the second level adsorption tower 3 that changes carried out step (3);
Said activated carbon of sorbent is process acid wash passivation active carbon processed, and its specific surface is 1,800,000m
2/ kg;
When activated carbon of sorbent contacts the oil gas that rises; Molecule bigger in the oil gas is adsorbed stop; Make that the hole of activated carbon of sorbent is occupied, it is up that less molecule passes active-carbon bed continuation in the oil gas, so; The one-level adsorbing separation mainly is that the big molecule in the oil gas is carried out adsorbing separation, and gained one-level adsorbed product is the hydrocarbon components of C4-C6 such as butane, pentane, hexane; Surplus component is carried out the secondary absorption separation again after the one-level adsorbing separation, makes less molecule obtain adsorbing separation, and gained secondary absorption product is the hydrocarbon components of C2-C3 such as ethane, propane;
(3) adsorbate desorb
Through desorption apparatus the adsorbing separation product in the step (2) is carried out desorb, comprising: open first order desorb control valve 17, open first order desorb vavuum pump 4, the one-level adsorbed product in the first order adsorption tower 2 is carried out the one-level desorb separate; Open second level desorb control valve 18, open second level desorb vavuum pump 5, the secondary absorption product in the second level adsorption tower 3 is carried out the secondary desorb separate;
Vacuum when first order desorb vavuum pump 4 and 5 desorbs of second level desorb vavuum pump is 80kpa;
(4) separated product is collected
The one-level desorb separated product of step (3) gained all gets into absorption tower 6, and gained secondary desorb separated product divides two parts to handle, 30% entering absorption tower 6, and remaining part directly gets into 10 storages of atmosphere storage device; The two-part ratio that secondary desorb separated product is handled respectively can be adjusted according to actual needs, and the part that directly gets into atmosphere storage device 10 can be stored according to actual needs or distribute as combustion gas again and utilized;
Get in the absorption tower 6 one-level desorb separated product and secondary desorb separated product from bottom to top through the Pall ring packing layer and with the absorbent counter current contacting, after absorbent absorbs, obtain liquid product through absorption product rear pump 9 entering absorbent storage tanks 8; The one-level desorb separated product and the continuation of secondary desorb separated product that are not absorbed the agent absorption are up, go out absorption tower 6 and get into oil gas input channel 11 repeating steps (1), recycle once more; Absorbent extracts the input of self-absorption tower 6 tops, back by absorbent delivery pump 7 from absorbent storage tank 8, from top to bottom through the Pall ring packing layer and with one-level desorb separated product and secondary desorb separated product counter current contacting, the absorption of fully dissolving each other;
Absorbent is realized recycle through absorbent delivery pump 7, absorbent storage tank 8, absorption product rear pump 9, when saving the energy, has also reached the effect that obtains the high concentration oil product;
Said absorbent is a crude oil, and crude oil is 10m through absorbent delivery pump 7 flow of carrying that circulates
3/ h.
Absorption type oil gas recovery and processing system of the present invention carries out secondary absorption and desorb respectively to crude oil vapor, and simultaneously, the absorbent circulation absorbs; Realize the circulating recycling of crude oil vapor; The abundant recovery of oil gas is protected, simultaneously, oil gas is purified be protected; Adsorbent and absorbent are the environment-friendly and energy-efficient product; Adsorbate is taked vacuum desorption; The external effluent of whole recovery processing procedure is merely second adsorption and separates the purified gas that the back can not pollute air; All the other are all reclaimed by the mode with liquid oil product or gaseous state combustion gas is convenient to utilize again, and other each side make whole process system and recovery processing technique process not only reach the high efficiente callback processing but also effects of energy conservation and environmental protection is remarkable; In addition, absorption type oil gas recovery and processing system of the present invention and technology thereof can also carry out absorption and desorb more than three grades or three grades, and circulation absorb according to the actual treatment needs.
Use the present invention and carry out the crude oil vapor recovery, the concentration that last gained purifies hydrocarbon in gas is 25g/m
3, the recycled in its entirety rate of oil gas reaches 95%.
As shown in Figure 1, a kind of setting of absorption type oil gas recovery and processing system and distribution are with embodiment 1.
Use absorption type oil gas recovery and processing system of the present invention and carry out the crude oil vapor recovery processing technique, remove following steps with embodiment 1:
In the step (2), the concentration that records effluent through said online concentration analyzer analysis reaches 30g/m
3The time, alternately change first order adsorption tower 2 and/or the second level adsorption tower 3 that adsorbs; Said activated carbon of sorbent specific surface is 240,000m
2/ kg;
In the step (3), the vacuum when first order desorb vavuum pump 4 and 5 desorbs of second level desorb vavuum pump is 90kpa;
In the step (4), said absorbent is a gasoline, and gasoline is 80m through absorbent delivery pump 7 flow of carrying that circulates
3/ h.
Use the present invention and carry out the crude oil vapor recovery, the concentration that last gained purifies hydrocarbon in gas is 20g/m
3, the recycled in its entirety rate of oil gas reaches 98%.
As shown in Figure 1, a kind of setting of absorption type oil gas recovery and processing system and distribution are with embodiment 1.
Use absorption type oil gas recovery and processing system of the present invention and carry out the crude oil vapor recovery processing technique, remove following steps with embodiment 1:
In the step (2), the concentration that records effluent through said online concentration analyzer analysis reaches 25g/m
3The time, alternately change first order adsorption tower 2 and/or the second level adsorption tower 3 that adsorbs; Said activated carbon of sorbent specific surface is 200,000m
2/ kg;
In the step (3), the vacuum when first order desorb vavuum pump 4 and 5 desorbs of second level desorb vavuum pump is 85kpa;
In the step (4), said absorbent is a diesel oil, and diesel oil is 50m through absorbent delivery pump 7 flow of carrying that circulates
3/ h.
Use the present invention and carry out the crude oil vapor recovery, the concentration that last gained purifies hydrocarbon in gas is 18g/m
3, the recycled in its entirety rate of oil gas reaches 97%.
Embodiment 4
As shown in Figure 1, a kind of setting of absorption type oil gas recovery and processing system and distribution are with embodiment 1.
Normal temperature crude oil vapor with hydrocarbon volume concentration 10% is recovered as example, uses technology that absorption type oil gas recovery and processing system of the present invention carries out crude oil vapor recycling with embodiment 1.
Use the present invention and carry out the crude oil vapor recovery, the concentration that last gained purifies hydrocarbon in gas is 6g/m
3, the recycled in its entirety rate of oil gas reaches 98.5%.
As shown in Figure 1, a kind of setting of absorption type oil gas recovery and processing system and distribution are with embodiment 2.
Normal temperature crude oil vapor with hydrocarbon volume concentration 10% is recovered as example, uses technology that absorption type oil gas recovery and processing system of the present invention carries out crude oil vapor recycling with embodiment 2.
Use the present invention and carry out the crude oil vapor recovery, the concentration that last gained purifies hydrocarbon in gas is 5g/m
3, the recycled in its entirety rate of oil gas reaches 99.6%.
Embodiment 6
As shown in Figure 1, a kind of setting of absorption type oil gas recovery and processing system and distribution are with embodiment 3.
Normal temperature crude oil vapor with hydrocarbon volume concentration 10% is recovered as example, uses technology that absorption type oil gas recovery and processing system of the present invention carries out crude oil vapor recycling with embodiment 3.
Use the present invention and carry out the crude oil vapor recovery, the concentration that last gained purifies hydrocarbon in gas is 4g/m
3, the recycled in its entirety rate of oil gas reaches 99.9%.
As shown in Figure 1, a kind of setting of absorption type oil gas recovery and processing system and distribution are with embodiment 1.
Normal temperature crude oil vapor with hydrocarbon volume concentration 30% is recovered as example, uses technology that absorption type oil gas recovery and processing system of the present invention carries out crude oil vapor recycling with embodiment 1.
Use the present invention and carry out the crude oil vapor recovery, the concentration that last gained purifies hydrocarbon in gas is 15g/m
3, the recycled in its entirety rate of oil gas reaches 98%.
As shown in Figure 1, a kind of setting of absorption type oil gas recovery and processing system and distribution are with embodiment 2.
Normal temperature crude oil vapor with hydrocarbon volume concentration 30% is recovered as example, uses technology that absorption type oil gas recovery and processing system of the present invention carries out crude oil vapor recycling with embodiment 2.
Use the present invention and carry out the crude oil vapor recovery, the concentration that last gained purifies hydrocarbon in gas is 14g/m
3, the recycled in its entirety rate of oil gas reaches 99.5%.
As shown in Figure 1, a kind of setting of absorption type oil gas recovery and processing system and distribution are with embodiment 3.
Normal temperature crude oil vapor with hydrocarbon volume concentration 30% is recovered as example, uses technology that absorption type oil gas recovery and processing system of the present invention carries out crude oil vapor recycling with embodiment 3.
Use the present invention and carry out the crude oil vapor recovery, the concentration that last gained purifies hydrocarbon in gas is 12g/m
3, the recycled in its entirety rate of oil gas reaches 99.9%.
The invention is not restricted to above-mentioned embodiment, those skilled in the art made to any conspicuous improvement of above-mentioned embodiment or change, can not exceed the protection domain of design of the present invention and accompanying claims.
Claims (10)
1. an absorption type oil gas recovery and processing system is characterized in that: comprise interconnective adsorbent equipment, desorption apparatus, absorption plant and storage device; Said adsorbent equipment is the above adsorbent equipment of one-level, and said desorption apparatus is the above desorption apparatus of one-level.
2. absorption type oil gas recovery and processing system according to claim 1 is characterized in that:
Said absorption plant comprises absorption tower and the absorbent feedway that is connected with said absorption tower;
Said adsorbent equipment is the secondary absorption device, comprises interconnective first order adsorbent equipment and second level adsorbent equipment;
Said desorption apparatus is the secondary desorption apparatus, comprises the first order desorption apparatus and the second level desorption apparatus that are connected with said absorption tower respectively;
Said first order adsorbent equipment is connected respectively with first order desorption apparatus and absorption tower, and said second level adsorbent equipment is connected with said second level desorption apparatus;
Said storage device comprises fluid storage device and gas storage device, and said fluid storage device is connected with said absorption tower, and said atmosphere storage device is connected with said second level desorption apparatus.
3. absorption type oil gas recovery and processing system according to claim 2 is characterized in that:
The bottom of said first order adsorbent equipment is connected with the top on said absorption tower through the oil gas input channel, and the top of said first order adsorbent equipment is connected with the bottom of said second level adsorbent equipment through one-level absorption pipe-line;
Said first order adsorbent equipment comprises two above first order adsorption towers, and said second level adsorbent equipment comprises two above second level adsorption towers;
Be provided with packing layer in the said absorption tower;
Said absorbent feedway comprises interconnective absorbent storage tank, absorbent delivery pump;
Said fluid storage device is connected with said absorption tower through the absorption product rear pump.
4. absorption type oil gas recovery and processing system according to claim 3 is characterized in that: be provided with the online concentration analyzer of measuring effluent concentration at the top exit place of each said first order adsorption tower and second level adsorption tower;
Said fluid storage device and said absorbent storage tank are same device.
5. according to claim 3 or 4 described absorption type oil gas recovery and processing systems, it is characterized in that:
Said first order desorption apparatus and second level desorption apparatus are vavuum pump;
Packing layer in the said absorption tower is the Pall ring packing layer;
Be provided with activated carbon adsorption bed in each said first order adsorption tower and the second level adsorption tower.
6. an absorption type oil gas recovery processing technique is characterized in that, comprises the steps:
(1) oil gas input
In adsorbent equipment, import oil gas through the oil gas input system;
(2) oil gas absorption
Adsorbent in the adsorbent equipment carries out adsorbing separation to the oil gas that gets into adsorbent equipment;
(3) adsorbate desorb
Through desorption apparatus the adsorbing separation product in the step (2) is carried out desorb;
(4) separated product is collected
Through the absorbent in the absorption plant desorb separated product of step (3) gained is absorbed back input storage device.
7. absorption type oil gas recovery processing technique according to claim 6 is characterized in that:
In step (1), the oil gas input system is input to adsorbent equipment with oil gas through the oil gas input channel;
In step (2), said adsorbent equipment is the secondary absorption device, and oil gas carries out the one-level adsorbing separation through first order adsorbent equipment with second level adsorbent equipment successively to be separated with secondary absorption;
In step (3), said desorption apparatus is the secondary desorption apparatus, and the one-level adsorbed product is carried out one-level desorb separation through first order desorption apparatus, and desorption apparatus carries out secondary desorb separation to the secondary absorption product through the second level;
In step (4); Said absorption plant comprises absorption tower and the absorbent feedway that is connected with said absorption tower; After the one-level desorb separated product of step (3) gained and secondary desorb separated product get into the absorption tower; From bottom to top through the packing layer in the absorption tower and with the absorbent counter current contacting that is input to by the absorbent feedway in the absorption tower; After absorbent absorbs, obtain liquid product and gaseous products, the gained liquid product gets into fluid storage device, and the gained gaseous products gets into oil gas input channel repeating step (1).
8. absorption type oil gas recovery processing technique according to claim 7 is characterized in that:
In step (2), said first order adsorbent equipment comprises two first order adsorption towers, two first order adsorption towers one-level adsorbing separation that hockets; Said second level adsorbent equipment comprises two second level adsorption towers, and two second level adsorption towers secondary absorption that hockets is separated;
In step (3), said first order desorption apparatus and second level desorption apparatus are vavuum pump;
In step (4), the packing layer in the said absorption tower is the Pall ring packing layer.
9. absorption type oil gas recovery processing technique according to claim 8 is characterized in that:
In step (2), be provided with the online concentration analyzer of measuring effluent concentration at the top exit place of each said first order adsorption tower and second level adsorption tower, the concentration that records effluent through online concentration analyzer analysis reaches 20g/m
3When above, alternately change first order adsorption tower and/or the second level adsorption tower that adsorbs;
In step (2), be provided with activated carbon adsorption bed in each said first order adsorption tower and the second level adsorption tower, adsorbent is an active carbon;
In step (4), said absorbent is gasoline, diesel oil or crude oil.
10. absorption type oil gas recovery processing technique according to claim 9 is characterized in that:
In step (2), activated carbon of sorbent is process acid wash passivation active carbon processed, and its specific surface is 1,800,000 ~ 2,400, and 000m
2/ kg;
In step (3), the vacuum during said vavuum pump desorb is 80-90kpa;
In step (4), the circular flow of said absorbent is 10m
3/ h-80m
3/ h.
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| CN104096451A (en) * | 2014-07-11 | 2014-10-15 | 海湾环境科技（北京）股份有限公司 | Lean oil gas recovery device and method |
| CN106076063A (en) * | 2016-08-03 | 2016-11-09 | 青岛诺诚化学品安全科技有限公司 | The passivating device of absorption method gas recovery system for oil |
| CN109126367A (en) * | 2017-06-27 | 2019-01-04 | 中国石油化工股份有限公司 | Absorption method lifting device and method in a kind of petroleum vapor recovery |
| CN110479028A (en) * | 2019-08-28 | 2019-11-22 | 中天科技精密材料有限公司 | A kind of oil vapor treatment system |
| CN111575042A (en) * | 2020-06-11 | 2020-08-25 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Combined oil gas recovery device and recovery process |
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