CN205360650U - Oil gas preprocessing device - Google Patents
Oil gas preprocessing device Download PDFInfo
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- CN205360650U CN205360650U CN201520980662.XU CN201520980662U CN205360650U CN 205360650 U CN205360650 U CN 205360650U CN 201520980662 U CN201520980662 U CN 201520980662U CN 205360650 U CN205360650 U CN 205360650U
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Abstract
The utility model discloses an oil gas preprocessing device, including casing no. 1, the top of casing no. 1 is provided with oil gas air inlet and tail gas export no. 1, the inside of casing no. 1 is provided with filter equipment, filter equipment's below is provided with heat transfer device, this heat transfer device's air inlet and gas outlet all with the vapor recovery system system in the condenser compressor be connected. The utility model is used for in the vapor recovery system system, realized carrying out preliminary treatment to oil gas to carry out the condensation to oil gas at the condenser before retrieving, makeeed the whole power consumption of reduction that the vapor recovery system system can be great, reduced the working costs to, effectual reduction effluent concentration.
Description
Technical field
This utility model relates to Investigation of Petroleum Vapor Recovery Technology field, it particularly relates to a kind of oil gas pretreatment unit.
Background technology
The fueling facilities such as oil depot, oil tank, fuel tank and oil drum are in oiling, emptying process, due to rising or falling of oil liquid level, cause that ullage is constantly discharged oil vapour or penetrates into air, cause energy waste, produce environmental pollution, bury disaster hidden-trouble, affect fuel oil quality.In order to reduce the volatilization of oil gas, generally adopt one or both methods in the technique such as absorption and sorption or condensation, the oil gas collection of volatilization is got up, makes oil gas be changed into liquid from gaseous state, again become fuel oil, reach the purpose recycled.Oil-gas recovery method common at present has absorption method, absorption process, membrane separation process and condensation method, specific as follows:
Absorption method is to utilize the adsorbent such as activated carbon, silica gel to the size to oil gas/air gaseous mixture absorption affinity, it is achieved the separation of oil gas and air.Oil gas is by adsorbents such as activated carbons, and oil-gas component is adsorbed on adsorbent surface, and then then through decompression desorption or steam desorption, the oil gas vacuum pump of enrichment is drawn into oil tank or liquefies with additive method；And the adsorbents such as activated carbon are very little to the absorption affinity of air, not adsorbed tail gas is through emission by exhaust pipe.The method can reach higher treatment effeciency, and concentration of emission is low, but its complex process, the activated carbon life-span is low, there is secondary pollution after inactivation, and adsorbent bed easily produces high temperature hotspot, there is the problems such as potential safety hazard.
Absorption process is the size according to component each in mixed oil and gas dissolubility in absorbent, carries out the separation of oil gas and air.Being generally adopted oil gas and carry out counter current contacting with the absorbent sprayed from absorption tower top, hydrocarbon component is carried out selective absorbing by absorbent, and unabsorbed gases discharges through spark arrester, and absorbent enters Vacuum solutions cucurbitula desorbing, and enrichment oil gas absorbs with oil product again.The method technique is simple, and cost of investment is low, but the response rate is too low, generally can only achieve about 80%, it is impossible to reach existing national standards；It is big that equipment takes up an area space.
Membrane separation process is the feature utilizing special polymeric membrane that hydro carbons has preferential permeability, allow oil gas and air Mixture under the promotion of certain pressure, making oil gas molecule preferentially through polymeric membrane, constituent of air is then trapped discharge, and the oil gas of enrichment is transmitted back to oil tank or liquefies with additive method.The shortcoming of the method is that membrane lifetime is short, expensive, and operation requires height, is easily generated discharge layer, there is potential safety hazard.
Condensation method is the vapour pressure difference utilizing hydrocarbons at different temperatures, makes by lowering the temperature some hydrocarbon vapours pressures in oil gas reach supersaturation and is condensed into the method that liquid reclaims oil gas.Can according to the composition of Volatile Gas, the response rate of requirement and the minimum temperature being finally discharged in the tail gas in air organic compound concentrations limit value and determining condensing unit, the method technique is simple, and safety is high, and the response rate is high, can directly obtain fluid oil.But, at present, existing condensation method is many because gas concentration is relatively low, and overall power consumption is higher, and brings higher operating cost.
This utility model is sent out Investigation of Petroleum Vapor Recovery Technology for existing condensation and is improved, provide a kind of oil gas pretreatment unit, for in gas recovery system for oil, to realize carrying out, before condensation is reclaimed, oil gas is carried out pretreatment to oil gas at condenser, gas recovery system for oil is promoted can greatly to reduce overall power consumption, reduce operating cost, and, effectively reduce concentration of emission.
Utility model content
For the problem in correlation technique, the utility model proposes a kind of oil gas pretreatment unit, for gas recovery system for oil, it is possible to before oil gas is carried out condensation recovery by condenser, oil gas is carried out pretreatment.
The technical solution of the utility model is achieved in that
A kind of oil gas pretreatment unit, including housing one, the top of described housing one is provided with oil gas air inlet and offgas outlet one, described housing one be internally provided with defecator, described defecator be arranged below heat-exchanger rig, the air inlet of this heat-exchanger rig is all connected with the condenser compressor in gas recovery system for oil with gas outlet.
Additionally, the bottom of described housing one is additionally provided with sewage comb, this sewage comb is connected with outside cesspool.
It addition, described oil gas air inlet is through described defecator, and, the end port of described oil gas air inlet is relative with the medial wall of described housing one.
Optionally, the end port of described oil gas air inlet is paralleled with the medial wall of described housing one.
Optionally, described defecator is detachable defecator.
Optionally, described heat-exchanger rig is finned heat exchanger.
This utility model beneficial effect: by arranging defecator, it is thus possible to realize oil gas is carried out pre-filtered effect, and by arranging heat-exchanger rig, then it is capable of the effect that oil gas is cooled down in advance, and it is relative with case inside wall by oil and gas import is set to, then it is capable of the effect of the uniformly ventilation of oil gas, prevent oil gas from leading directly to heat-exchanger rig, air inlet is uneven, cannot be winding is effectively cooled, and then make gas recovery system for oil when oil gas carrying out condensation and reclaiming, avoid because of exist impurity and temperature is higher and air inlet is uneven and cause condenser condensation time length and the big problem of power consumption, reduce the overall power consumption of gas recovery system for oil, decrease operating cost, also reduce concentration of emission simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the surface structure schematic diagram of the oil gas pretreatment unit according to this utility model embodiment；
Fig. 2 is the internal structure schematic diagram of the oil gas pretreatment unit according to this utility model embodiment；
Fig. 3 is the structural representation of the gas recovery system for oil according to this utility model embodiment；
Fig. 4 is the surface structure schematic diagram of the condensation reducer according to this utility model embodiment；
Fig. 5 is the internal structure perspective view of the condensation reducer according to this utility model embodiment；
Fig. 6 is the surface structure schematic diagram of the oil molecule grabber according to this utility model embodiment；
Fig. 7 is the internal structure schematic diagram of the oil molecule grabber according to this utility model embodiment.
In figure:
1, condenser；2, oil and water trap；3, oil gas pretreatment unit；4, housing one；5, oil gas air inlet；6, offgas outlet one；7, defecator；8, heat-exchanger rig；9, air inlet；10, gas outlet；11, condenser compressor；12, sewage comb；13, cesspool；14, cold air return duct；15, condensation reducer；16, housing two；17, offgas outlet two；18, inlet exhaust gas one；19, pipeline；20, outlet pipe；21, profit outlet one；22, oil molecule grabber；23, housing three；24, oil molecule catcher；25, tinsel dividing plate；26, offgas outlet three；27, inlet exhaust gas two；28, profit outlet two；29, sideboard；30, condenser offgas outlet.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain, broadly fall into the scope of this utility model protection.
According to embodiment of the present utility model, it is provided that a kind of oil gas pretreatment unit.
As shown in Figure 1-2, oil gas pretreatment unit according to this utility model embodiment includes housing 1, the top of described housing 1 is provided with oil gas air inlet 5 and offgas outlet 1, described housing 1 be internally provided with defecator 7, described defecator 7 be arranged below heat-exchanger rig 8, the air inlet 9 of this heat-exchanger rig 8 is all connected with the condenser compressor 11 in gas recovery system for oil with gas outlet 10.The bottom of described housing 1 is additionally provided with sewage comb 12, and this sewage comb 12 is connected with outside cesspool 13.
In one embodiment, in order to further control intake velocity, oil gas can better be cooled down in advance, can also by oil gas air inlet 5 traverse defecator 7, and make the end of oil gas air inlet 5 relative with the medial wall of housing 1, wherein, owing to the end of oil gas air inlet 5 is relative with the medial wall of housing 1, thus when avoiding air inlet, oil gas direct heat exchanging device 8 blow-through, but face toward the medial wall blow-through of housing 1, the medial wall buffering having housing 1 again diffuses in housing 1, and then not only control speed, and it is also possible that oil gas and heat-exchanger rig 8 are fully contacted, obtain good cooling effect.
When specifically applying, in order to specification produces, improve work efficiency and production efficiency, can be set to be parallel to each other by the medial wall of the end port of oil gas air inlet 5 Yu described housing 1.Additionally, when specifically applying, also above-mentioned defecator 7 can be selected as detachable defecator (such as, select detachable scum filter), to facilitate, oil gas pretreatment 1 be safeguarded that cleaning processes.Certainly, when specifically used, for heat-exchanger rig 8, in order to improve heat transfer effect, can be selected for finned heat exchanger.
Understand technique scheme of the present utility model in order to convenient, below in conjunction with the overall structure of gas recovery system for oil, technique scheme of the present utility model is described in detail.
As shown in figs. 1-7, gas recovery system for oil include being sequentially connected with and freeze oil and water trap 2, the oil gas pretreatment unit 3 being connected between oil and gas pipes and condenser 1, the offgas outlet 1 being connected to oil gas pretreatment unit 3 and condenser 1 that some condensers 1 that rank is gradually increased are connected with described condenser 1 condenser offgas outlet 30 on condensation reducer 15, the oil molecule grabber 22 that is connected on condensation reducer 15.
Wherein, oil gas pretreatment unit 3 includes housing 1, the top of described housing 1 is provided with oil gas air inlet 5 and offgas outlet 1, described housing 1 be internally provided with defecator 7, described defecator 7 be arranged below heat-exchanger rig 8, the air inlet 9 of this heat-exchanger rig 8 is all connected with condenser compressor 11 with gas outlet 10, the bottom of described housing 1 is provided with sewage comb 12, and this sewage comb 12 is connected with outside cesspool 13.
Wherein, condensation reducer 15 includes housing 2 16, the top of described housing 2 16 be provided with offgas outlet 2 17 and with described offgas outlet 1, the inlet exhaust gas 1 that condenser offgas outlet 30 connects, and, described housing 2 16 be internally provided with the pipeline 19 connected one to one with described some condensers 1, this pipeline 19 is connected with the outlet pipe 20 of described housing 2 16 side, the diameter of described outlet pipe 20 is more than described pipeline 19 diameter sum, and, described outlet pipe 20 is connected with described condenser compressor 11, in addition, the bottom of described housing 2 16 is additionally provided with profit outlet 1, described profit outlet 1 is connected with described oil and water trap 2.
Wherein, oil molecule grabber 22 includes housing 3 23, described housing 3 23 be internally provided with oil molecule catcher 24, some tinsel dividing plates 25 it are provided with in described oil molecule catcher 24, adjacent two tinsel dividing plates 25 mutually against and leave gap, described housing 3 23 is additionally provided with offgas outlet 3 26 and the inlet exhaust gas 2 27 being connected with described offgas outlet 2 17, described inlet exhaust gas 2 27 is connected to the side of described oil molecule catcher 24, described offgas outlet 3 26 is connected to the opposite side of described oil molecule catcher 24, the bottom of described oil molecule catcher 24 is provided with profit outlet 2 28, this profit outlet 2 28 is connected with bottom and the described oil and water trap 2 of described oil molecule catcher 24.Wherein, inlet channel is formed between tinsel dividing plate 25 and oil molecule catcher 24 medial wall, this inlet channel is airtight passage near the side of inlet exhaust gas 2 27 and/or offgas outlet 3 26, this inlet channel is provided with opening near the side of tinsel dividing plate 25 bottom towards tinsel dividing plate 25, and, it is provided with sideboard 29 in the inlet channel of inlet exhaust gas 2 27 side, this sideboard 29 is positioned at the lower section of described inlet exhaust gas 2 27, and when inlet exhaust gas 2 27 is not ventilated, close inlet channel, when inlet exhaust gas 2 27 is ventilated, open inlet channel.
Time specifically used, for some condensers 1, it can include first-stage condenser, secondary condenser and three condensers of three grades of condensers, and the temperature of three condensers is gradually lowered, respectively-5 DEG C ,-55 DEG C and-120 DEG C.
Time specifically used, oil gas enters oil and gas import 5 by oil and gas pipes, it is passed in oil gas pretreatment unit 1, after oil gas is passed in oil gas pretreatment unit 1, condenser compressor 11 works, there is provided cold air for the heat-exchanger rig 8 in oil gas pretreatment unit 1, promote heat-exchanger rig 8 that the oil gas in oil gas pretreatment unit 1 is cooled down in advance.After the cooling period or simultaneously, oil gas after cooling is entered into by pipeline and carries out condensation recycling in first-stage condenser, and in the process of oil gas circulation, a small amount of oil gas is flowed out by offgas outlet 1, and filter and sewage produced by heat exchange, then it is discharged in cesspool 13 by sewage comb 12.
While oil gas is carried out one-level condensation recovery by first-stage condenser, owing to first-stage condenser is sequentially connected with secondary condenser and three grades of condensers, therefore, oil gas can enter in secondary condenser and three grades of condensers in succession, carry out condensation to reclaim, condense the obtained profit of recovery to be then flowed in oil-water collecting device 3 (i.e. fuel tank) by pipeline and recycle, and condense a small amount of oil gas remaining during recovery, then it is flowed into by condenser offgas outlet 30 in the inlet exhaust gas 1 of condensation reducer 15.
At this it should be noted that the tail gas that oil gas pretreatment unit 1 flows out is flowed in the inlet exhaust gas 1 of condensation reducer 15 too, carry out further vent gas treatment.
In addition, it can further be stated that, when oil gas is carried out condensation recovery by first-stage condenser, secondary condenser, three grades of condensers, can pass through to control the condenser compressor 11 that (stopping) is corresponding, cold air in high level condenser is refluxed in low level condenser, so that the temperature in low level condenser can be rapidly achieved requirement, the energy consumption of degradation compressor corresponding to low level condenser.
When tail gas enters into after in the inlet exhaust gas 1 of condensation reducer 15, first-stage condenser, secondary condenser, three grades of condensers are under the control of corresponding compressor, cold air is passed in the pipeline 19 of condensation reducer 15, tail gas in condensation reducer 15 is condensed recovery again, in the process, owing to the diameter sum of three pipelines 19 is less than connected outlet pipe 20, thus the principle then led to because of pressure differential throttling generation latent heat and cigarette between pipeline 19 and outlet pipe 20 forms air pressure difference, promote the cold air convection current in pipeline 19, and then take away " high-temperature gas " that heat exchange brings, should " high-temperature gas " then again lead in condenser compressor 11 by pipeline, and condense and reclaim obtained profit, then it is flowed in oil and water trap 2 by pipeline.
nullWhen utilizing condensation reducer 15 that tail gas is carried out, condensation is reclaimed further，It is likely to also have a small amount of tail gas produce，Now，Tail gas is then entered in oil molecule grabber 22 by pipeline，And due in oil molecule grabber 22，There is oil molecule catcher 24、Tinsel dividing plate 25 and inlet channel，Therefore，Enter the tail gas in oil molecule grabber 22 and then can only lead to the bottom of tinsel dividing plate 25，Flowed upwards out by the gap between tinsel dividing plate 25 again，And then emitted by offgas outlet 3 26，In the process，Trickle gap is left owing between tinsel dividing plate 25 being close to each other，Therefore，When tail gas circulates in tinsel dividing plate 25，Oil molecule in tail gas can be attached on tinsel dividing plate 25，And then under gravity，It is enriched with in the bottom of oil molecule catcher，And then be flowed in oil-water collecting device 2 by pipeline.So far, whole petroleum vapor recovery flow process terminates.
As can be seen here, by means of technique scheme of the present utility model, by arranging defecator 7, it is thus possible to realize oil gas is carried out pre-filtered effect, and by arranging heat-exchanger rig 8, then it is capable of the effect that oil gas is cooled down in advance, and it is relative with housing 1 medial wall by oil and gas import 5 is set to, then it is capable of the effect of the uniformly ventilation of oil gas, prevent oil gas from leading directly to heat-exchanger rig 8, air inlet is uneven, cannot be winding is effectively cooled, and then make gas recovery system for oil when oil gas carrying out condensation and reclaiming, avoid because of exist impurity and temperature is higher and air inlet is uneven and cause condenser condensation time length and the big problem of power consumption, reduce the overall power consumption of gas recovery system for oil, decrease operating cost, also reduce concentration of emission simultaneously.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (6)
1. an oil gas pretreatment unit, it is characterized in that, including housing one (4), the top of described housing one (4) is provided with oil gas air inlet (5) and offgas outlet one (6), described housing one (4) be internally provided with defecator (7), described defecator (7) be arranged below heat-exchanger rig (8), the air inlet (9) of this heat-exchanger rig (8) is all connected with the condenser compressor (11) in gas recovery system for oil with gas outlet (10).
2. oil gas pretreatment unit according to claim 1, it is characterised in that the bottom of described housing one (4) is additionally provided with sewage comb (12), this sewage comb (12) is connected with outside cesspool (13).
3. oil gas pretreatment unit according to claim 1, it is characterized in that, described oil gas air inlet (5) the described defecator of traverse (7), and, the end port of described oil gas air inlet (5) is relative with the medial wall of described housing one (4).
4. oil gas pretreatment unit according to claim 3, it is characterised in that the end port of described oil gas air inlet (5) is paralleled with the medial wall of described housing one (4).
5. oil gas pretreatment unit according to claim 1, it is characterised in that described defecator (7) is detachable defecator.
6. oil gas pretreatment unit according to claim 1, it is characterised in that described heat-exchanger rig (8) is finned heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520980662.XU CN205360650U (en) | 2015-12-01 | 2015-12-01 | Oil gas preprocessing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520980662.XU CN205360650U (en) | 2015-12-01 | 2015-12-01 | Oil gas preprocessing device |
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| CN205360650U true CN205360650U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520980662.XU Withdrawn - After Issue CN205360650U (en) | 2015-12-01 | 2015-12-01 | Oil gas preprocessing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771299A (en) * | 2015-12-01 | 2016-07-20 | 北京明天和创科贸有限公司 | Oil and gas pretreatment device |
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2015
- 2015-12-01 CN CN201520980662.XU patent/CN205360650U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771299A (en) * | 2015-12-01 | 2016-07-20 | 北京明天和创科贸有限公司 | Oil and gas pretreatment device |
| CN105771299B (en) * | 2015-12-01 | 2018-11-06 | 北京明天和创科贸有限公司 | A kind of oil gas pretreatment unit |
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Addressee: Cheng Han Document name: Notification of Passing Examination on Formalities |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160706 Effective date of abandoning: 20181106 |