CN206499997U - A kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique - Google Patents
A kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique Download PDFInfo
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- CN206499997U CN206499997U CN201720104577.6U CN201720104577U CN206499997U CN 206499997 U CN206499997 U CN 206499997U CN 201720104577 U CN201720104577 U CN 201720104577U CN 206499997 U CN206499997 U CN 206499997U
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Abstract
The utility model discloses a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique, including oil and gas import, the first valve group, Roots vaccum pump, dry vacuum pump, one-level oil-gas condenser, two grades of oil-gas condensers, three-level oil-gas condenser, check-valves, adsorption tanks group, the second valve group, resolution gas entrance, clean gas floss holes, the first valve group is connected in parallel and constituted by the air inlet valve group and vacuum valve group below adsorption tanks group；Second valve group is connected in parallel and constituted by the exhaust valve group above adsorption tanks group and purging valve group；Resolution gas entrance, purging valve group, adsorption tanks group, vacuum valve group, Roots vaccum pump, dry vacuum pump, one-level oil-gas condenser, two grades of oil-gas condensers, three-level oil-gas condenser and check-valves are sequentially connected, and check-valves is connected with oil and gas import again；Oil and gas import is sequentially connected with air inlet valve group, adsorption tanks group, exhaust valve group and clean gas floss hole.With facility compact, energy consumption is small, operating cost is low, floor space is small, the low feature of concentration of oil and gas discharged.
Description
Technical field
The utility model is related to Investigation of Petroleum Vapor Recovery Technology field, the energy-storage type oil of more particularly to a kind of utilization adsorption condensing technique
Gas recovering device.
Background technology
Oil gas is a kind of VOC (Volatile Organic Compounds, VOC) gas, is usually
Mixture containing VOC and a large amount of incoagulable gas.
The technical method of existing main flow petroleum vapor recovery handling process, generally condensation+absorbing process, compression condensation+film+
Absorbing process, absorption+absorption technique etc..
1st, condensation+absorbing process is, it is necessary to phase transformation when making the VOC and incoagulable gas in oil gas not separate,
Now the partial pressure of VOC is very low, accordingly, and the phase transformation temperature pointses of VOC are very low, only drop
Low condensation temperature can just make its phase transformation, such as common condensation+absorbing process for petrol gas, and its design temperature is -75
℃.Condensation+absorbing process also provides low temperature cold to possible moisture phase transformation etc. in incoagulable gas and incoagulable gas,
Idle work is done.The high-concentration oil vapor of adsorbing separation, introducing device entrance and fresh air-fuel mixture, are slightly improved into condensation
The partial pressure of the VOC of system, makes oil gas condensation.But so wasted the centrifugation of adsorption system
(high-concentration oil vapor being desorbed out is diluted in system entry by fresh oil gas again), makes desorption gas circulate again and adds condensation and inhale
The burden of attached two systems, increases energy consumption again.
2nd, compression condensation+film+absorbing process, makes the partial pressure liter of volatile organic matter in oil gas by the compression to oil gas
Height, so that improving it condenses the temperature spot of phase transformation, then by the centrifugation of film and activated carbon etc., makes the high-concentration oil vapor of separation
Return to entrance and continuation compression condensation is mixed with inlet gas, similarly, separated oil gas is introduced again into entrance and green oil
Gas is mixed, and reduces the partial pressure for the high-concentration oil vapor being desorbed out, so that plant energy consumption rises, investment is increased.
3rd, absorption+absorption technique, preferably solves both the above technique separation gas and circulates again, cause desorption gas dilute
Release, and cause the increased shortcoming of energy consumption.By the way that desorption gas is directly deviate from, directly absorbed, be not completely absorbed with absorbent
Part oil gas again with the fresh air-fuel mixture of entrance circular treatment again, this just significantly reduces the overall energy consumption of equipment, if but
During using high-efficiency absorbent with oil gas different material, new material is introduced again --- absorbent, point of absorbent is involved again
From regeneration issues, complicate the issue.Therefore, current running gear is absorbed using commaterial mostly, such as petrol gas absorption+absorption
Retracting device, using charcoal absorption, oil depot storage tank is introduced through the technique that the cold gasoline come absorbs.The absorption efficiency of gasoline is very
Low, it is necessary to which a large amount of fresh cold gasoline are as absorbent, and general oil-gas recovery processing device is incorporated into loading and unloading oils area, from oil depot
Farther out, this technique will increase the investment of the absorbent circulatory system, and necessary site installation test, it is impossible to manufacturer's standard for tank area
Change is assembled into standard device.
It is existing to be closest to oil-gas recovery method of the present utility model in addition to process above, Chinese invention patent
A kind of technique for the absorption+condensation mentioned in CN201110090661, this technique is from inwardly solving greatly the classes such as condensation+absorption
Like the energy consumption problem of technique, the problems such as absorbent of absorption+absorption technique causes equipment cost increase is solved again.But the work
Skill introduces novel substance when purging --- the nitrogen of heating, heat energy and nitrogen resource are wasted, and also the technique is just for such as
The higher special single material oil gas of the phase transition temperatures such as the gaseous mixture of the toluene mentioned and air in its patent, these one-components
Material is high to phase transition temperature, insensitive to energy consumption.The mixture of the larger phase varying duty under low temperature is needed for petrol gas etc.
Oil gas, is that can not use this technique completely.
Because the actual extraction flow of vavuum pump is not steady state value, in the starting air aspiration stage of vavuum pump, its capacity
Very big, the oil gas for needing phase transformation of extraction is more, and " refrigeration duty " now needed is very big, during using patent CN201110090661
It will be unable to ensure its cryogenic temperature, so as to cause a large amount of non-phase transformation oil gas to be recycled into adsorption system again.Such as with 1000Nm3/h
Petrol gas using absorption method reclaim for, the configuration of its dry vacuum pump reaches 1500~2000Nm3/ h, that is to say, that
1500~2000Nm is reached starting its high-concentration oil vapor of moment3/ h, so big oil gas flow its condense phase varying duty right and wrong
Chang Ju great 's, simulate and calculate by HYSYS, the nearly 700KW of its value, much larger than the oil-gas recovery device using condensation+absorbing process
Energy consumption.According to VFC vavuum pump actual flow, then in order to meet the technique of completion was desorbed in 10~20 minutes will
Ask, dry vacuum pump, which needs to increase several orders of magnitude, can be only achieved this rate requirement, cause the investment of dry vacuum pump to increase severely.
Scheme of the present utility model is the improvement carried out regarding to the issue above to existing oil-gas recovery processing device.
Utility model content
In order to overcome deficiency of the prior art, the utility model provides a kind of energy-storage type of utilization adsorption condensing technique
Device for recovering oil and gas, with technique is simple, facility compact, energy consumption is smaller, operating cost is low, operating cost is low, investment repayment is all
Phase is short, floor space is small, concentration of oil and gas discharged is far smaller than the non-secondary pollution of national standard and reclaims the characteristics of income is good.
In order to reach above-mentioned utility model purpose, the technical scheme that its technical problem used is solved as follows：
A kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique, including oil and gas import, the first valve group, Luo Cizhen
Empty pump, dry vacuum pump, one-level oil-gas condenser, two grades of oil-gas condensers, three-level oil-gas condenser, check-valves, adsorption tanks group,
Second valve group, resolution gas entrance, clean gas floss hole, wherein：
First valve group is connected in parallel and constituted by the air inlet valve group and vacuum valve group below the adsorption tanks group；
Second valve group is connected in parallel and constituted by the exhaust valve group above the adsorption tanks group and purging valve group；
The resolution gas entrance, purging valve group, adsorption tanks group, vacuum valve group, Roots vaccum pump, dry vacuum pump, one-level
Oil-gas condenser, two grades of oil-gas condensers, three-level oil-gas condenser and check-valves are sequentially connected, and the check-valves again with it is described
Oil and gas import is connected；
The oil and gas import is sequentially connected with the air inlet valve group, adsorption tanks group, exhaust valve group and clean gas floss hole.
Further, the adsorption tanks group includes the left adsorption tanks and right adsorption tanks being connected in parallel；
The air inlet valve group is constituted by entering the left valve of oil gas and entering the connection of oil gas right valve in parallel, and left is inhaled with described respectively
The bottom connection of attached tank and right adsorption tanks；
The vacuum valve group is made up of the left valve of vacuum and the connection of vacuum right valve in parallel, and respectively with the left adsorption tanks
Connected with the bottom of right adsorption tanks.
Further, the purging valve group is made up of the left valve of purge gass and the right valve in parallel connection of purge gass, and respectively
It is connected with the top of the left adsorption tanks and right adsorption tanks；
The exhaust valve group is constituted by going out the left valve of oil gas and going out the connection of oil gas right valve in parallel, and left is inhaled with described respectively
The top connection of attached tank and right adsorption tanks.
It is preferred that, the left adsorption tanks and/or right adsorption tanks can be made up of several small adsorption tanks serial or parallel connections.
Further, in addition to one-level refrigeration unit, the one-level refrigeration unit is connected to described one by closed pipeline
The two ends of level oil-gas condenser, for providing the cold of the one-level oil-gas condenser and controlling oil gas temperature -20~+30
℃。
Further, in addition to refrigerating system, the refrigerating system provides low temperature refrigerating medium and simultaneously connected by closed pipeline
In the two ends of two grades of oil-gas condensers, for the cold of two grades of oil-gas condensers is provided and control oil gas temperature-
50~-20 DEG C.
Further, the refrigerating system includes cold-accumulating box, refrigerating medium circulating pump and the two stage cooler group being sequentially connected,
Wherein：
The outlet of the cold-accumulating box is connected with the entrance of the refrigerating medium circulating pump, the outlet of the refrigerating medium circulating pump with
Evaporator inlet in the two stage cooler group is connected, the evaporator outlet in the two stage cooler group and two grades of oil
Refrigerating medium access road in gas condenser is connected, the refrigerating medium channel outlet in two grades of oil-gas condensers and the cold-storage
The entrance of case is connected.
Further, in addition to three-level cascade refrigeration unit, the three-level cascade refrigeration unit passes through closed pipeline
The two ends of the three-level oil-gas condenser are connected to, for providing the cold of the three-level oil-gas condenser and controlling oil gas temperature
At -80~-50 DEG C.
Further, the dry vacuum pump is dry screw vacuum pump, dry type scroll vacuum pump, dry type blade vacuum
Pump, claw shape dry type vacuum pump or air-cooled Roots vacuum pump.
Further, the Roots vaccum pump is air-cooled Roots vacuum pump.
Further, in addition to the first frequency converter, first frequency converter is connected with the Roots vaccum pump, for controlling
The nonoverload when Roots vaccum pump starts it.
Further, in addition to the second frequency converter, second frequency converter is connected with the dry vacuum pump, for controlling
The rotating speed of the dry vacuum pump.
The utility model is allowed to compared with prior art, have the following advantages that and accumulate due to using above technical scheme
Pole effect：
(1) a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique of the utility model and traditional first condensation,
The device for recovering oil and gas adsorbed afterwards is compared, only the 40% of its energy consumption, has greatly saved energy consumption；Suction is combined with traditional absorption
Receipts formula device for recovering oil and gas is compared, and has saved the investment of absorbent pipeline, and the part that traditional handicraft needs site operation is become
It is complete in factory, save on-site construction time, it is ensured that the stability of equipment.
(2) the utility model is by the collocation of Roots vaccum pump+dry vacuum pump, and the later stage for adding desorption is taken out
Speed, the system of improving reaches the time of high vacuum, so as to reduce the size of prime dry vacuum pump, has saved and has invested into
This.
(3) the utility model solves absorption by the collocation of Roots vaccum pump+dry vacuum pump and two grades of refrigerating systems
When+condensation process is used for high-concentration oil vapor, the problem of vacuum pumping speed is difficult to match with cold.
(4) using 2 groups of adsorption tanks for being set up in parallel in the utility model, 2 groups of adsorption tanks be alternatively used for adsorbing and parsing at
Reason, improves petroleum vapor recovery efficiency.
(5) the utility model is both improved efficiency of oil ＆ gas processing, dress is reduced again using the process combination of absorption and condensation
Put energy expenditure.
(6) the utility model utilizes three-level fractional condensation so that higher boiling is separated from each other with lower boiling organic matter, improves
Reclaim the concentration of organic matter.
(7) the utility model passes through oil and gas import and fresh air-fuel mixture for a small amount of on-condensible gas after processing
Carry out second adsorption, it is ensured that overall process does not have exceeded exhaust emissions.
(8) many places such as Roots vaccum pump and/or dry vacuum pump equipment uses change in the utility model device for recovering oil and gas
Frequency is controlled, and effectively reduces energy consumption.
(9) conventional equipment all can be used in all parts of the utility model, simple in construction, it is easy to operate；Space-consuming is few, peace
Complete reliable, technique is simple, it is easy to implement, and recovering effect is good, is particularly suitable for use in the depth recycling of oil gas, highly reliable, returns
Efficiency high is received, under the conditions of equal reclaim, the utility model is than traditional device for recovering oil and gas, and energy consumption is low, and treatment effeciency is high.
(10) the utility model first carries out absorption so as to which air be drained before deep condensation, can greatly reduce because to sky
The energy consumption that moisture in gas and air carries out deep refrigerating and wasted.The utility model is effectively intercepted by way of first adsorbing
VOC, and the most of moisture in air and air is excluded, be unlikely to as the technique for first condensing, afterwards adsorbing less than
A few houres are accomplished by defrosting.
(11) oil gas recovery rate of the utility model device for recovering oil and gas is up to 99% or so, and exhaust emissions concentration is less than
120mg/m3, national newest standards requirement is reached, can effectively prevent from discharging oil gas into air during transmitting-receiving oil product, reduce environment
Pollution and the hidden danger of fire explosion, obvious economic interests and social benefit are brought to user.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, required in being described below to embodiment
The accompanying drawing used is briefly described.It is clear that drawings in the following description are only some embodiments of the present utility model,
For those skilled in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.In accompanying drawing：
Fig. 1 is that a kind of overall structure of the energy-storage type device for recovering oil and gas of utilization adsorption condensing technique is shown in the utility model
It is intended to.
【Primary symbols explanation】
1- Roots vaccum pumps；
2- dry vacuum pumps；
3- one-level oil-gas condensers；
Bis- grades of oil-gas condensers of 4-；
5- three-level oil-gas condensers；
6- enters the left valve of oil gas；
7- enters the right valve of oil gas
The left valve of 8- vacuum；
The right valve of 9- vacuum；
The left valve of 10- purge gass；
The right valve of 11- purge gass；
12- goes out the left valve of oil gas；
13- goes out the right valve of oil gas；
The left adsorption tanks of 14-；
The right adsorption tanks of 15-；
16- one-level refrigeration units；
17- cold-accumulating box；
18- refrigerating medium circulating pumps；
19- two stage cooler groups；
The evaporator of 191- two stage cooler groups；
20- three-level cascade refrigeration units；
21- check-valves.
Embodiment
Below with reference to accompanying drawing of the present utility model, the technical scheme in the utility model embodiment is carried out clear, complete
Whole description and discussion, it is clear that as described herein is only a part of example of the present utility model, is not whole realities
Example, based on the embodiment in the utility model, those of ordinary skill in the art institute on the premise of creative work is not made
The every other embodiment obtained, belongs to protection domain of the present utility model.
Referring to Fig. 1, the utility model discloses a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique, including
Oil and gas import, the first valve group, Roots vaccum pump 1, dry vacuum pump 2, one-level oil-gas condenser 3, two grades of oil-gas condensers 4, three
Level oil-gas condenser 5, check-valves 21, adsorption tanks group, the second valve group, resolution gas entrance, clean gas floss hole, wherein：
First valve group is connected in parallel and constituted by the air inlet valve group and vacuum valve group below the adsorption tanks group；
Second valve group is connected in parallel and constituted by the exhaust valve group above the adsorption tanks group and purging valve group；
The resolution gas entrance, purging valve group, adsorption tanks group, vacuum valve group, Roots vaccum pump 1, dry vacuum pump 2, one
Level oil-gas condenser 3, two grades of oil-gas condensers 4, three-level oil-gas condenser 5 and check-valves 21 are sequentially connected, and the check-valves
21 are connected with the oil and gas import again；
The oil and gas import is sequentially connected with the air inlet valve group, adsorption tanks group, exhaust valve group and clean gas floss hole.
In one specific embodiment, the adsorption tanks group includes the left adsorption tanks 14 and right adsorption tanks 15 being connected in parallel, this reality
With the new middle adsorption tanks being set up in parallel using two groups, two groups of adsorption tanks are alternatively used for absorption and dissection process, improve oil gas
Organic efficiency.It is preferred that, the left adsorption tanks 14 and/or right adsorption tanks 15 can be by several small adsorption tanks serial or parallel connection groups
Into.At least include following several situations：The left adsorption tanks 14 are made up of several small adsorption tanks serial or parallel connections, 2 kinds of situations；
The right adsorption tanks 15 can be made up of several small adsorption tanks serial or parallel connections, 2 kinds of situations；The left adsorption tanks 14 and right absorption
Tank 15 can be made up of several small adsorption tanks serial or parallel connections, 2 kinds of situations.
Further, the air inlet valve group is constituted by entering the left valve 6 of oil gas and entering the right valve 7 of oil gas and be connected in parallel, and point
Bottom not with the left adsorption tanks 14 and right adsorption tanks 15 is connected；
The vacuum valve group is connected in parallel and constituted by the left valve 8 of vacuum and the right valve 9 of vacuum, and respectively with the left absorption
The bottom connection of tank 14 and right adsorption tanks 15.
It is described purging valve group be connected in parallel and constituted by the left valve 10 of purge gass and the right valve 11 of purge gass, and respectively with it is described
The top connection of left adsorption tanks 14 and right adsorption tanks 15；
The exhaust valve group is constituted by going out the left valve 12 of oil gas and going out the right valve 13 of oil gas and be connected in parallel, and respectively with it is described
The top connection of left adsorption tanks 14 and right adsorption tanks 15.
Further, device for recovering oil and gas also includes one-level refrigeration unit 16, and the one-level refrigeration unit 16 is by closed
Pipeline is connected to the two ends of the one-level oil-gas condenser 3, for providing the cold of the one-level oil-gas condenser 3 and controlling oil
Temperature degree is at -20~+30 DEG C.
Further, device for recovering oil and gas also includes refrigerating system, and the refrigerating system provides low temperature refrigerating medium and passed through
Closed pipeline is connected to the two ends of two grades of oil-gas condensers 4, cold and control for providing two grades of oil-gas condensers 4
Liquefaction temperature degree is at -50~-20 DEG C.
Specifically, the refrigerating system includes passing sequentially through cold-accumulating box 17, the refrigerating medium circulating pump 18 and two of pipeline connection
Level refrigeration unit 19, wherein：
The outlet of the cold-accumulating box 17 is connected with the entrance of the refrigerating medium circulating pump 18, the refrigerating medium circulating pump 18
Outlet is connected with the entrance of evaporator 191 in the two stage cooler group 19, and the evaporator 191 in the two stage cooler group goes out
Mouth is connected with the refrigerating medium access road in two grades of oil-gas condensers 4, and the refrigerating medium in two grades of oil-gas condensers 4 leads to
Road outlet is connected with the entrance of the cold-accumulating box 17.In the present embodiment, refrigerating system be opened water circulation system, when need defrosting
When, the refrigerating medium in two grades of oil-gas condensers 4 can lean on gravity to be all back in the cold-accumulating box 17, negative when reducing defrosting
Lotus.
Further, device for recovering oil and gas also includes three-level cascade refrigeration unit 20, the three-level cascade refrigeration machine
Group 20 is connected to the two ends of the three-level oil-gas condenser 5 by closed pipeline, for providing the three-level oil-gas condenser 5
Cold simultaneously controls oil gas temperature at -80~-50 DEG C.The refrigerating capacity of three-level cascade refrigeration unit 20 is very small, only minimum portion
Divide light component in this phase transformation.When the light component content in oil-gas component is less, this unit can be omitted.
In preferred embodiment, the dry vacuum pump 2 is dry screw vacuum pump, dry type scroll vacuum pump, dry type blade
Vavuum pump, claw shape dry type vacuum pump or air-cooled Roots vacuum pump.
In preferred embodiment, the Roots vaccum pump 1 is air-cooled Roots vacuum pump.
Further, device for recovering oil and gas also includes the first frequency converter (not shown) and the second frequency converter (not shown), institute
State the first frequency converter to be connected with the Roots vaccum pump 1, nonoverload during for controlling the Roots vaccum pump 1 to start it.Institute
State the second frequency converter to be connected with the dry vacuum pump 2, the rotating speed for controlling the dry vacuum pump 2.The Roots vacuum
Pump 1 and/or the grade of dry vacuum pump 2 many places equipment use VFC, effectively reduce energy consumption.
A kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique of the utility model, it is main using two groups of adsorption tanks
Alternately absorption regeneration, when one of which adsorption tanks are adsorbed, another group of adsorption tanks utilize dry vacuum pump regeneration, specific oil gas
Recovery process process is as follows：
First, pending oil gas enters through oil gas mouthful, and from oil gas condensation system (one-level oil-gas condenser 3, two grades of oil gas
Condenser 4 and three-level oil-gas condenser 5) discharge the uncooled air-fuel mixture of very small amount after, through air inlet valve group enter correspondence activity
Charcoal adsorption tanks, such as oil gas are blocked through entering the left valve 6 of oil gas into left adsorption tanks 14, and being adsorbed by adsorbent in left adsorption tanks 14
Cut, remaining cleaning tail gas is discharged into air through going out the left valve 12 of oil gas, and while the left absorption of adsorption tanks 14 oil gas, right adsorption tanks 15 exist
The alt time of regeneration, regeneration and absorption is 10~20 minutes.If by taking 20 minutes recovery times as an example, right adsorption tanks 15 start again
When raw, the right valve 9 of vacuum is opened, while dry vacuum pump 2 starts, after dry vacuum pump 2 is run 1~5 minute (or detect
When the pressure of adsorption tanks is 10~90KPa (A)), Roots vaccum pump 1, which starts, helps dry vacuum pump 2 to continue to vacuumize, during regeneration
Between (pumpdown time) reach after 10~15 minutes (or reach 1 according to the pressure in the right adsorption tanks 15 regenerated~
During 15KPa (A)), the right valve 11 of purge gass is opened (while Roots vaccum pump 1 is out of service, or can during using ventilation type vavuum pump
Not stop, and dry vacuum pump 2 is continued to run with always), the pure air or nitrogen that right adsorption tanks 15 fill into not oily are blown
The activated carbon in right adsorption tanks 15 is swept, makes regenerating active carbon more thorough, after the right valve 11 of purge gass is opened 1~3 minute, Roots
Vavuum pump 1 and dry vacuum pump 2 stop pumping (while the right valve 9 of vacuum is closed), and the right valve 11 of purge gass continues to open tonifying Qi,
Make to exhaust the pressure in the right adsorption tanks 15 of vacuum gradually to recover to close when closing or left and right adsorption tanks switch after normal pressure, to treat down
The secondary alternate run with left adsorption tanks 14；
Wherein, when adsorption tanks regenerate and are desorbed, the vacuum system in the present embodiment uses Roots vaccum pump 1 and dry vacuum
The tandem compound vacuum pump set of pump 2, is typically configured to：The size of dry vacuum pump 2 and the vavuum pump of former absorption+absorption technique
Configuration is equally big, plus the rotating speed of Frequency Converter Control dry vacuum pump 2, to control oil gas flow, Roots vaccum pump 1 also adds frequency converter
It is set not overloaded when starting.Dry vacuum pump 2 can also be arranged to the vacuum pumping speed than techniques such as normal sorption+absorptions
Left and right half as large, dry vacuum pump 2 is not added with VFC, and two grades of Roots vaccum pumps 1 plus VFC make it will not when starting
Overload directly uses air-cooled Roots vacuum pump.
In the present embodiment, the startup pressure of Roots vaccum pump 1 is 10~90KPa (A), and configuration pumping speed size is dry vacuum
2~5 times of pump 2, desorption system design vacuum is 500Pa (A)~3KPa (A), wherein especially optimal with 1KPa (A).
The peak load that high concentration can be desorbed into gas by above step is reduced to traditional absorption+absorption technique and is desorbed gas
Within the half of peak load.
Secondly, the high concentration desorption gas after Roots vaccum pump 1 is vacuumized is delivered to dry vacuum pump 2, dry vacuum
After the high concentration desorption gas that pump 2 is extracted out is precooled through one-level oil-gas condenser 3, small part oil gas condensation, uncooled gas portion
Divide two grades of oil-gas condensers 4 for entering main condensation, and temperature is down to -50~-20 DEG C wherein, remainder is not
The oil gas of condensation is after three-level oil-gas condenser 5, uncooled few part incoagulable gas and the fresh air-fuel mixture of entrance,
Participation is circulated again.Specifically, the one-level oil-gas condenser 3 is by being connected to the one-level refrigeration machine at its two ends by closed pipeline
Group 16 provides cold and controls oil gas temperature at -20~+30 DEG C.Two grades of oil-gas condensers 4 pass through refrigerating by refrigerating system
Agent circulating pump 18 provides cold, and the refrigerating system provides cold by the two stage cooler group 19, in first time starting device
Before, need that the temperature of the refrigerating system first is down into -50~-20 DEG C, most volatile organic matters are in two grades of oil gas
Phase transformation is condensed in condenser 4, and due to being provided with cold-accumulating box 17 in the refrigerating system, can be provided compared with High cooling power, made with moment
High-concentration oil vapor is condensed in this phase transformation.Calculated by actual motion and simulation, the vacuum pump assembly selected by above method
50KPa (A) was about evacuated at 5 minutes or so, that is to say, that as long as the cold-accumulating box 17 of design meets this 5 minutes or so heating i.e.
Refrigeration can be met to require.Refrigerating medium circulating pump 18 and two grades of oil gas condensations are arranged on by the evaporator 191 of two stage cooler group
Structure between device 4 so that the refrigerating medium that refrigerating medium circulating pump 18 is pumped out every time, is all freezed again by two stage cooler group 19,
So that the refrigerant temperature of two grades of oil-gas condensers 4 of feeding than 17 low 3~5 DEG C of cold-accumulating box (according to design pump discharge and two-stage system
Cold refrigerating capacity is adjusted), enhance heat transfer effect.The three-level oil-gas condenser 5 by closed pipeline by being connected to its two ends
Three-level cascade refrigeration unit 20 provide and cold and control oil gas temperature at -80~-50 DEG C.
Further, treating at least one in one-level oil-gas condenser 3, two grades of oil-gas condensers 4 and/or three-level oil-gas condenser 5
When oil-gas condenser frosting need to defrost, oil and gas import stops the fresh oil gas of input, is connected to the one of the two ends of one-level oil-gas condenser 3
Level refrigeration unit 16 starts hot fluorine defrosting program, meanwhile, it is connected to two grades in the refrigerating system at two grades of two ends of oil-gas condenser 4
Refrigeration unit 19 and refrigerating medium circulating pump 18 and the three-level cascade refrigeration unit 20 for being connected to the two ends of three-level oil-gas condenser 5
It is out of service, and ensure any one adsorption tanks in two grades of oil-gas condensers 4 in underfill low temperature refrigerating medium, left and right adsorption tanks
Blow down valve and vacuum valve open, suction fresh air or nitrogen, fresh air or nitrogen are conveyed into one-level through dry vacuum pump 2
Oil-gas condenser 3 is heated, and the fresh air or nitrogen after heating successively pass through two grades of oil-gas condensers 4 and three-level oil-gas condenser
5, make two oil-gas condenser heating defrostings, then discharged through another adsorption tanks in the adsorption tanks of left and right.
Running example：
With 1000Nm3/ h is adsorbed+condensed exemplified by petrol gas recycling equipment, due to participating in the regeneration air exhaustion of circulation
Few, the loading capacity of activated carbon is smaller than absorption+absorption technique by 10% or so.
Prime dry vacuum pump 2 selects 800m3/ h, Roots vaccum pump 1 selects 4000m3/ h, vacuum system is invested about than straight
Selecting (about needs 2000m with dry vacuum pump3/ h) it is at half.
One-level refrigeration unit 16 selects 10HP high temperature vortex machines, and about 40KW refrigerating capacity, middle low temperature can be provided in high temperature section
When provide about 10KW or so refrigerating capacity, during defrosting provide about 50KW heating capacity.
Two grades of flows of refrigerating medium circulating pump 18 are 40 ton hours, and refrigerating medium uses glycol water, and its specific heat capacity is about
3KJ/kg·K。
Two stage cooler group 19 selects 100HP low temperature screw machines, and 100KW can be about provided in low-temperature zone during band economizer operation
Refrigerating capacity.
Three-level refrigeration unit 20 selects 5HP*2 cascade refrigeration units, and 1.5KW refrigerating capacitys are about provided in low-temperature zone.
Above overall operation energy consumption is about 120KW, and the petrol gas recovery than -75 DEG C of condensation+absorbing process of use is set
For 180KW has been saved, (- 75 DEG C first condense the petroleum vapor recovery technique adsorbed afterwards, and its energy consumption is about 0.3KW/Nm3)。
The utility model is allowed to compared with prior art, have the following advantages that and accumulate due to using above technical scheme
Pole effect：
(1) a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique of the utility model and traditional first condensation,
The device for recovering oil and gas adsorbed afterwards is compared, only the 40% of its energy consumption, has greatly saved energy consumption；Suction is combined with traditional absorption
Receipts formula device for recovering oil and gas is compared, and has saved the investment of absorbent pipeline, and the part that traditional handicraft needs site operation is become
It is complete in factory, save on-site construction time, it is ensured that the stability of equipment.
(2) the utility model is by the collocation of Roots vaccum pump+dry vacuum pump, and the later stage for adding desorption is taken out
Speed, the system of improving reaches the time of high vacuum, so as to reduce the size of prime dry vacuum pump, has saved and has invested into
This.
(3) the utility model solves absorption by the collocation of Roots vaccum pump+dry vacuum pump and two grades of refrigerating systems
When+condensation process is used for high-concentration oil vapor, the problem of vacuum pumping speed is difficult to match with cold.
(4) the utility model is both improved efficiency of oil ＆ gas processing, dress is reduced again using the process combination of absorption and condensation
Put energy expenditure.
(5) the utility model utilizes three-level fractional condensation so that higher boiling is separated from each other with lower boiling organic matter, improves
Reclaim the concentration of organic matter.
(6) the utility model passes through oil and gas import and fresh air-fuel mixture for a small amount of on-condensible gas after processing
Carry out second adsorption, it is ensured that overall process does not have exceeded exhaust emissions.
(7) conventional equipment all can be used in all parts of the utility model, simple in construction, it is easy to operate；Space-consuming is few, peace
Complete reliable, technique is simple, it is easy to implement, and recovering effect is good, is particularly suitable for use in the depth recycling of oil gas, highly reliable, returns
Efficiency high is received, under the conditions of equal reclaim, the utility model is than traditional device for recovering oil and gas, and energy consumption is low, and treatment effeciency is high.
(8) the utility model first carries out absorption so as to which air be drained before deep condensation, can greatly reduce because to sky
The energy consumption that moisture in gas and air carries out deep refrigerating and wasted.The utility model is effectively intercepted by way of first adsorbing
VOC, and the most of moisture in air and air is excluded, be unlikely to as the technique for first condensing, afterwards adsorbing less than
A few houres are accomplished by defrosting.
(9) oil gas recovery rate of the utility model device for recovering oil and gas is up to 99% or so, and exhaust emissions concentration is less than
120mg/m3, national newest standards requirement is reached, can effectively prevent from discharging oil gas into air during transmitting-receiving oil product, reduce environment
Pollution and the hidden danger of fire explosion, obvious economic interests and social benefit are brought to user.
It is described above, only the utility model preferably embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is defined by scope of the claims.
Claims (12)
1. a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique, it is characterised in that including oil and gas import, the first valve
Group, Roots vaccum pump, dry vacuum pump, one-level oil-gas condenser, two grades of oil-gas condensers, three-level oil-gas condenser, check-valves,
Adsorption tanks group, the second valve group, resolution gas entrance, clean gas floss hole, wherein：
First valve group is connected in parallel and constituted by the air inlet valve group and vacuum valve group below the adsorption tanks group；
Second valve group is connected in parallel and constituted by the exhaust valve group above the adsorption tanks group and purging valve group；
The resolution gas entrance, purging valve group, adsorption tanks group, vacuum valve group, Roots vaccum pump, dry vacuum pump, one-level oil gas
Condenser, two grades of oil-gas condensers, three-level oil-gas condenser and check-valves are sequentially connected, and the check-valves again with the oil gas
Import is connected；
The oil and gas import is sequentially connected with the air inlet valve group, adsorption tanks group, exhaust valve group and clean gas floss hole.
2. a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique according to claim 1, it is characterised in that
The adsorption tanks group includes the left adsorption tanks and right adsorption tanks being connected in parallel；
The air inlet valve group is constituted by entering the left valve of oil gas and entering the connection of oil gas right valve in parallel, and respectively with the left adsorption tanks
Connected with the bottom of right adsorption tanks；
The vacuum valve group is made up of the left valve of vacuum and the connection of vacuum right valve in parallel, and respectively with the left adsorption tanks and the right side
The bottom connection of adsorption tanks.
3. a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique according to claim 2, it is characterised in that
The purging valve group is made up of the left valve of purge gass and the connection of purge gass right valve in parallel, and respectively with the left adsorption tanks and the right side
The top connection of adsorption tanks；
The exhaust valve group is constituted by going out the left valve of oil gas and going out the connection of oil gas right valve in parallel, and respectively with the left adsorption tanks
Connected with the top of right adsorption tanks.
4. a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique according to claim 2, it is characterised in that
The left adsorption tanks and/or right adsorption tanks can be made up of several small adsorption tanks serial or parallel connections.
5. a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique according to claim 1, it is characterised in that
Also include one-level refrigeration unit, the one-level refrigeration unit is connected to the two of the one-level oil-gas condenser by closed pipeline
End, for providing the cold of the one-level oil-gas condenser and controlling oil gas temperature at -20~+30 DEG C.
6. a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique according to claim 1, it is characterised in that
Also include refrigerating system, the refrigerating system provides low temperature refrigerating medium and is connected to two grades of oil gas condensations by closed pipeline
The two ends of device, for providing the cold of two grades of oil-gas condensers and controlling oil gas temperature at -50~-20 DEG C.
7. a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique according to claim 6, it is characterised in that
The refrigerating system includes cold-accumulating box, refrigerating medium circulating pump and the two stage cooler group being sequentially connected, wherein：
The outlet of the cold-accumulating box is connected with the entrance of the refrigerating medium circulating pump, the outlet of the refrigerating medium circulating pump with it is described
Evaporator inlet in two stage cooler group is connected, and the evaporator outlet and two grades of oil gas in the two stage cooler group are cold
Refrigerating medium access road in condenser is connected, the refrigerating medium channel outlet in two grades of oil-gas condensers and the cold-accumulating box
Entrance is connected.
8. a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique according to claim 1, it is characterised in that
Also include three-level cascade refrigeration unit, the three-level cascade refrigeration unit is connected to the three-level oil gas by closed pipeline
The two ends of condenser, for providing the cold of the three-level oil-gas condenser and controlling oil gas temperature at -80~-50 DEG C.
9. a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique according to claim 1, it is characterised in that
The dry vacuum pump be dry screw vacuum pump, dry type scroll vacuum pump, dry type sliding vane rotary vacuum pump, claw shape dry type vacuum pump or
Air-cooled Roots vacuum pump.
10. a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique according to claim 1, its feature exists
In the Roots vaccum pump is air-cooled Roots vacuum pump.
11. a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique according to claim 1, its feature exists
In, in addition to the first frequency converter, first frequency converter is connected with the Roots vaccum pump, for controlling the Roots vaccum pump
Nonoverload when starting it.
12. a kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique according to claim 1, its feature exists
In, in addition to the second frequency converter, second frequency converter is connected with the dry vacuum pump, for controlling the dry vacuum pump
Rotating speed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720104577.6U CN206499997U (en) | 2017-01-26 | 2017-01-26 | A kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720104577.6U CN206499997U (en) | 2017-01-26 | 2017-01-26 | A kind of energy-storage type device for recovering oil and gas of utilization adsorption condensing technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110975850A (en) * | 2019-12-10 | 2020-04-10 | 海湾环境科技（北京）股份有限公司 | Vacuumizing device and method and oil gas recovery system |
| CN111320998A (en) * | 2020-02-21 | 2020-06-23 | 南京工业大学 | Recovery device and method for treating volatile oil gas waste gas with high purification degree |
-
2017
- 2017-01-26 CN CN201720104577.6U patent/CN206499997U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110975850A (en) * | 2019-12-10 | 2020-04-10 | 海湾环境科技（北京）股份有限公司 | Vacuumizing device and method and oil gas recovery system |
| CN111320998A (en) * | 2020-02-21 | 2020-06-23 | 南京工业大学 | Recovery device and method for treating volatile oil gas waste gas with high purification degree |
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