CN105771299B - A kind of oil gas pretreatment unit - Google Patents
A kind of oil gas pretreatment unit Download PDFInfo
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- CN105771299B CN105771299B CN201510854999.0A CN201510854999A CN105771299B CN 105771299 B CN105771299 B CN 105771299B CN 201510854999 A CN201510854999 A CN 201510854999A CN 105771299 B CN105771299 B CN 105771299B
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- oil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
- B01D5/0072—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
- B01D5/0075—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with heat exchanging
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a kind of oil gas pretreatment units, including shell one, the top of the shell one is provided with oil gas air inlet and offgas outlet one, the shell one is internally provided with filter device, it is provided with heat-exchanger rig below the filter device, the air inlet of the heat-exchanger rig is connect with the condenser compressor in gas recovery system for oil with gas outlet.The present invention is used in gas recovery system for oil, is realized to being pre-processed to oil gas before condenser carries out condensing recovery to oil gas, has been promoted gas recovery system for oil that can greatly reduce whole energy consumption, reduced operating cost, also, effectively reduce concentration of emission.
Description
Technical field
The present invention relates to Investigation of Petroleum Vapor Recovery Technology fields, 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 refuel, emptying during, due to fluid position rising or under
Drop causes ullage that oil vapour is constantly discharged or penetrates into air, causes energy waste, generation environment pollution, buries fire
Calamity hidden danger influences fuel oil quality.In order to reduce the volatilization of oil gas, one kind in the techniques such as generally use absorption and sorption or condensation
Or two methods, the oil gas collection of volatilization is got up, so that oil gas is changed into liquid from gaseous state, becomes fuel oil again, reaches recycling
The purpose utilized.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 realize oil to the size to oil gas/air gaseous mixture adsorption capacity using adsorbents such as activated carbon, silica gel
The separation of gas and air.Oil gas is by adsorbents such as activated carbons, and oil-gas component is adsorbed on adsorbent surface, then using decompression
Desorption or steam desorption, the oil gas of enrichment are drawn into oil tank with vacuum pump or are liquefied with other methods；And the adsorbents such as activated carbon
Very small to the adsorption capacity of air, tail gas not to be adsorbed is through emission by exhaust pipe.This method can reach higher treatment effeciency,
Concentration of emission is low, but its complex process, and the activated carbon service life is low, and there are secondary pollution after inactivation, adsorbent bed easy tos produce high warm
The problems such as point, there are security risks.
Absorption process is the size of the solubility in absorbent according to each component in mixed oil and gas, to carry out oil gas and air
Separation.General to carry out counter current contacting with the absorbent sprayed from absorption tower top using oil gas, absorbent carries out hydrocarbon component
Selective absorbing, unabsorbed gases are discharged through spark arrester, and absorbent enters the desorption of Vacuum solutions cucurbitula, and enrichment oil gas uses oil again
Product absorb.This method is simple for process, and cost of investment is low, but the rate of recovery is too low, generally can only achieve 80% or so, is unable to reach existing
Row national standard；Equipment space is big.
Membrane separation process is that have the characteristics of preferential permeability to hydro carbons using special polymeric membrane, allows oil gas and air Mixture
Under the promotion of certain pressure, oil gas molecule is made preferentially to penetrate polymeric membrane, and constituent of air is then trapped discharge, the oil of enrichment
Gas is transmitted back to oil tank or is liquefied with other methods.The disadvantages of this method is that membrane lifetime is short, expensive, and operation requires high, easily production
Raw discharge layer, there are security risks.
Condensation method is to utilize the vapour pressure difference of hydrocarbons at different temperatures, makes some hydro carbons in oil gas by cooling
Vapour pressure reaches the method that supersaturation is condensed into liquid recycling oil gas.Can according to the ingredient of Volatile Gas, the rate of recovery of requirement and
Organic compound concentrations limit value determines the minimum temperature of condensing unit, this method technique letter in the tail gas being finally discharged into air
Single, safe, the rate of recovery is high, can directly obtain fluid oil.However, currently, existing condensation method mostly because gas concentration compared with
Low, whole energy consumption is higher, and brings higher operating cost.
It is improved the present invention be directed to existing condensation hair Investigation of Petroleum Vapor Recovery Technology, provides a kind of oil gas pretreatment dress
It sets, is used in gas recovery system for oil, to realize to being pre-processed to oil gas before condenser carries out condensing recovery to oil gas,
Promote gas recovery system for oil that can greatly reduce whole energy consumption, reduces operating cost, also, effectively reduce concentration of emission.
Invention content
For the problems in the relevant technologies, the present invention proposes a kind of oil gas pretreatment unit, is used for gas recovery system for oil,
Oil gas can be pre-processed before condenser carries out condensing recovery to oil gas.
The technical proposal of the invention is realized in this way：
The top of a kind of oil gas pretreatment unit, including shell one, the shell one is provided with oil gas air inlet and tail gas
Outlet one, the shell one is internally provided with filter device, is provided with heat-exchanger rig below the filter device, the heat exchange
The air inlet of device is connect with the condenser compressor in gas recovery system for oil with gas outlet.
In addition, the bottom end of the shell one is additionally provided with sewage comb, which connect with external cesspool.
In addition, the oil gas air inlet passes through the filter device, also, the end port of the oil gas air inlet and institute
The madial wall for stating shell one is opposite.
Optionally, the end port of the oil gas air inlet is parallel with the madial wall of the shell one.
Optionally, the filter device is detachable filter device.
Optionally, the heat-exchanger rig is finned heat exchanger.
Advantageous effect of the present invention：By the way that filter device is arranged, pre-filtered effect is carried out to oil gas so as to realize, and
By setting heat-exchanger rig, then the effect pre-cooled to oil gas can be realized, and by setting oil gas air inlet to
It is opposite with case inside wall, then it can realize the effect of oil gas uniformly taken a breath, prevent oil gas from leading directly to heat-exchanger rig, air inlet is uneven
It is even, it is unable to get effective cooling, so that gas recovery system for oil is avoided when carrying out condensing recovery to oil gas because there are miscellaneous
Matter and temperature is higher and air inlet is uneven and leads to condenser condensation time length and the big problem of power consumption, reduces petroleum vapor recovery
The whole energy consumption of system, reduces operating cost, while also reducing concentration of emission.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the surface structure schematic diagram of oil gas pretreatment unit according to the ... of the embodiment of the present invention；
Fig. 2 is the internal structure schematic diagram of oil gas pretreatment unit according to the ... of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of gas recovery system for oil according to the ... of the embodiment of the present invention；
Fig. 4 is the surface structure schematic diagram of condensation flow controller according to the ... of the embodiment of the present invention；
Fig. 5 is the internal structure perspective view of condensation flow controller according to the ... of the embodiment of the present invention；
Fig. 6 is the surface structure schematic diagram of oil molecule grabber according to the ... of the embodiment of the present invention；
Fig. 7 is the internal structure schematic diagram of oil molecule grabber according to the ... of the embodiment of the present invention.
In figure：
1, condenser；2, oil and water trap；3, oil gas pretreatment unit；4, shell one；5, oil gas air inlet；6, tail gas goes out
Mouth one；7, filter device；8, heat-exchanger rig；9, air inlet；10, gas outlet；11, condenser compressor；12, sewage comb；13,
Cesspool；14, cold air return duct；15, flow controller is condensed；16, shell two；17, offgas outlet two；18, inlet exhaust gas one；19,
Pipeline；20, outlet pipe；21, grease outlet one；22, oil molecule grabber；23, shell three；24, oil molecule catcher；25,
Wire partition board；26, offgas outlet three；27, inlet exhaust gas two；28, grease outlet two；29, flapper；30, condenser tail
Gas exports.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained belong to what the present invention protected
Range.
According to an embodiment of the invention, a kind of oil gas pretreatment unit is provided.
As shown in Figs. 1-2, oil gas pretreatment unit according to the ... of the embodiment of the present invention includes shell 1, the shell 1
Top is provided with oil gas air inlet 5 and offgas outlet 1, and the shell 1 is internally provided with filter device 7, the filtering
The lower section of device 7 is provided with heat-exchanger rig 8, the air inlet 9 of the heat-exchanger rig 8 and gas outlet 10 in gas recovery system for oil
Condenser compressor 11 connects.The bottom end of the shell 1 is additionally provided with sewage comb 12, the sewage comb 12 and external dirt
Pond 13 connects.
In one embodiment, in order to further control intake velocity so that oil gas can preferably obtain cold in advance
But, oil gas air inlet 5 can also be passed through to filter device 7, and make the madial wall of the end and shell 1 of oil gas air inlet 5
Relatively, wherein since the end of oil gas air inlet 5 is opposite with the madial wall of shell 1, when so as to avoid air inlet, oil gas is straight
Exchange 8 blow-through of thermal is connect, but against the madial wall blow-through of shell 1, then there is the madial wall buffering of shell 1 to diffuse to
In shell 1, and then speed is not only controlled, but also be also possible that oil gas comes into full contact with heat-exchanger rig 8, obtained preferable
Cooling effect.
In specific application, in order to which specification produces, working efficiency and production efficiency are improved, it can be by the end of oil gas air inlet 5
The madial wall of end port and the shell 1 is set as being mutually parallel.In addition, in specific application, also above-mentioned filtering can be filled
It is detachable filter device (for example, selecting detachable scum filter) to set 7 selections, to facilitate to oil gas pretreatment unit
3 carry out maintenance cleaning treatment.Certainly, it when specifically used, for heat-exchanger rig 8, in order to improve heat transfer effect, can be selected
Finned heat exchanger.
In order to facilitate the above-mentioned technical proposal of the present invention is understood, below in conjunction with the overall structure of gas recovery system for oil, to this
The above-mentioned technical proposal of invention is described in detail.
As shown in figs. 1-7, if gas recovery system for oil include be sequentially connected and freeze dry condenser 1 that rank gradually increases,
The oil and water trap 2 that is connect with the condenser 1, the oil gas pretreatment unit 3 being connected between oil-gas pipeline and condenser 1,
The condensation flow controller being connected on the offgas outlet 1 of oil gas pretreatment unit 3 and the condenser offgas outlet 30 of condenser 1
15, the oil molecule grabber 22 being connected on condensation flow controller 15.
Wherein, top of the oil gas pretreatment unit 3 including shell 1, the shell 1 is provided with 5 and of oil gas air inlet
Offgas outlet 1, the shell 1 are internally provided with filter device 7, and the lower section of the filter device 7 is provided with heat exchange dress
8 are set, the air inlet 9 of the heat-exchanger rig 8 is connect with condenser compressor 11 with gas outlet 10, and the bottom end of the shell 1 is set
It is equipped with sewage comb 12, which connect with external cesspool 13.
Wherein, condensation flow controller 15 includes shell 2 16, and the top of the shell 2 16 is provided with 2 17 He of offgas outlet
The inlet exhaust gas 1 being connect with the offgas outlet 1, condenser offgas outlet 30, also, the inside of the shell 2 16
If being provided with the pipeline 19 to connect one to one with the dry condenser 1, the outlet of the pipeline 19 and 2 16 side of the shell
Pipeline 20 connects, and the diameter of the outlet pipe 20 is more than the sum of 19 diameter of the pipeline, also, the outlet pipe 20 with
The condenser compressor 11 connects, in addition, the bottom end of the shell 2 16 is additionally provided with grease outlet 1, the grease goes out
Mouth 1 is connect with the oil and water trap 2.
Wherein, oil molecule grabber 22 includes shell 3 23, and the shell 3 23 is internally provided with oil molecule catcher
24, several wire partition boards 25 are provided in the oil molecule catcher 24, and adjacent two wires partition board 25 is mutually abutted and stayed
There are gap, the inlet exhaust gas that offgas outlet 3 26 is additionally provided on the shell 3 23 and is connect with the offgas outlet 2 17
2 27, the inlet exhaust gas 2 27 is connected to the side of the oil molecule catcher 24, and the offgas outlet 3 26 is connected to institute
The other side of oil molecule catcher 24 is stated, the bottom end of the oil molecule catcher 24 is provided with grease outlet 2 28, which goes out
Mouth 2 28 is connect with the bottom end of the oil molecule catcher 24 and the oil and water trap 2.Wherein, wire partition board 25 with
Inlet channel is formed between 24 madial wall of oil molecule catcher, the inlet channel is close to inlet exhaust gas 2 27 and/or offgas outlet
3 26 side is airtight passage, which sets close to the side of 25 bottom end of wire partition board towards wire partition board 25
There is opening, also, flapper 29 is provided in the inlet channel of 2 27 side of inlet exhaust gas, which is located at
The lower section of the inlet exhaust gas 2 27, and when inlet exhaust gas 2 27 is not ventilated, inlet channel is closed, it is logical in inlet exhaust gas 2 27
When gas, inlet channel is opened.
May include first-stage condenser, secondary condenser and three-level if for dry condenser 1 when specifically used
Three condensers of condenser, the temperature of three condensers continuously decrease, respectively -5 DEG C, -55 DEG C and -120 DEG C.
When specifically used, oil gas enters oil gas air inlet 5 by oil-gas pipeline, is passed into oil gas pretreatment unit 3, when
After oil gas is passed into oil gas pretreatment unit 3, condenser compressor 11 works, and is the heat exchange dress in oil gas pretreatment unit 3
8 offer cold air are provided, heat-exchanger rig 8 is promoted to pre-cool the oil gas in oil gas pretreatment unit 3.After the cooling period or together
When, oil gas after cooling enters progress condensing recovery processing in first-stage condenser by pipeline, and in the process of oil gas circulation
In, a small amount of oil gas is flowed out by offgas outlet 1, and sewage caused by filtering and exchanging heat, then passes through 12 row of sewage comb
Go out into cesspool 13.
While first-stage condenser carries out level-one condensing recovery to oil gas, due to first-stage condenser and secondary condenser and
Three-level condenser is sequentially connected, and therefore, oil gas successive can enter in secondary condenser and three-level condenser, carry out cold
Solidifying recycling, and the obtained grease of condensing recovery is then flowed into oil and water trap 2 (i.e. fuel tank) by pipeline and carries out recycling profit
With, and a small amount of oil gas remaining when condensing recovery, then the tail of condensation flow controller 15 is flowed by condenser offgas outlet 30
In gas import 1.
It should be noted that the tail gas that oil gas pretreatment unit 3 is flowed out similarly is flowed into condensation flow controller 15
Inlet exhaust gas 1 in, carry out further vent gas treatment.
In addition it is also necessary to which explanation, condenses oil gas in first-stage condenser, secondary condenser, three-level condenser
When recycling, the corresponding condenser compressor of control (stopping) 11 can be passed through so that cold air in high level condenser is to rudimentary
It flows back in other condenser, so that the temperature in low level condenser can be rapidly achieved requirement, degradation low level condenser institute is right
The energy consumption for the compressor answered.
After in the inlet exhaust gas 1 that tail gas enters condensation flow controller 15, first-stage condenser, secondary condenser, three-level
Condenser is passed through cold air under the control of corresponding compressor into the pipeline 19 of condensation flow controller 15, to condensing flow controller
In tail gas in 15 carry out condensing recovery again, in the process, be connected thereto since the sum of diameter of three pipelines 19 is less than
Outlet pipe 20, to then generate the logical principle shape of latent heat and cigarette because pressure difference throttles between pipeline 19 and outlet pipe 20
At air pressure difference, promote the cold air convection current in pipeline 19, and then take away " high-temperature gas " caused by heat exchange, and is somebody's turn to do " high
Wet body " is then led to by pipeline in condenser compressor 11 again, and the obtained grease of condensing recovery, then passes through pipeline stream
Enter into oil and water trap 2.
When carrying out further condensing recovery to tail gas using condensation flow controller 15, a small amount of tail gas production may be also had
It is raw, at this point, tail gas is then entered by pipeline in oil molecule grabber 22, and since in oil molecule grabber 22, there are oil
Therefore molecule trapping chamber 24, wire partition board 25 and inlet channel can only then lead into the tail gas in oil molecule grabber 22
It is flowed upwards out to the bottom end of wire partition board 25, then by the gap between wire partition board 25, and then passes through offgas outlet 3 26
It emits, in the process, due to being close to each other between wire partition board 25 there are subtle gap, when
When tail gas circulates in wire partition board 25, the oil molecule in tail gas can be attached on wire partition board 25, and then in gravity
Under effect, it is enriched in the bottom end of oil molecule catcher, and then be flowed into oil and water trap 2 by pipeline.So far, entire oil
Gas recovery process terminates.
It can be seen that by means of the above-mentioned technical proposal of the present invention, by the way that filter device 7 is arranged, so as to realize pair
Oil gas carries out pre-filtered effect, and by setting heat-exchanger rig 8, then it can realize the effect pre-cooled to oil gas,
And by the way that oil gas air inlet 5 is set as opposite with one 4 madial wall of shell, then it can realize the effect of oil gas uniformly taken a breath,
Prevent oil gas from leading directly to heat-exchanger rig 8, air inlet is uneven, is unable to get effective cooling, so that gas recovery system for oil is to oil
When gas carries out condensing recovery, avoid because there are lead to condenser condensation time due to impurity and temperature is higher and air inlet is uneven
The long and big problem of power consumption reduces the whole energy consumption of gas recovery system for oil, reduces operating cost, while also reducing discharge
Concentration.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (4)
1. a kind of oil gas pretreatment unit, which is characterized in that including shell one (4), the top of the shell one (4) is provided with oil
Gas air inlet (5) and offgas outlet one (6), the shell one (4) are internally provided with filter device (7), the filter device
(7) heat-exchanger rig (8) is provided with below, the air inlet (9) of the heat-exchanger rig (8) and gas outlet (10) with petroleum vapor recovery system
Condenser compressor (11) connection in system, the oil gas air inlet (5) pass through the filter device (7), also, the oil gas
The end port of air inlet (5) is opposite and parallel with the madial wall of the shell one (4).
2. oil gas pretreatment unit according to claim 1, which is characterized in that the bottom end of the shell one (4) is also set up
There is sewage comb (12), which connect with external cesspool (13).
3. oil gas pretreatment unit according to claim 1, which is characterized in that the filter device (7) is detachable
Filter device.
4. oil gas pretreatment unit according to claim 1, which is characterized in that the heat-exchanger rig (8) exchanges heat for fin
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510854999.0A CN105771299B (en) | 2015-12-01 | 2015-12-01 | A kind of oil gas pretreatment unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510854999.0A CN105771299B (en) | 2015-12-01 | 2015-12-01 | A kind of oil gas pretreatment unit |
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| Publication Number | Publication Date |
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| CN105771299A CN105771299A (en) | 2016-07-20 |
| CN105771299B true CN105771299B (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510854999.0A Expired - Fee Related CN105771299B (en) | 2015-12-01 | 2015-12-01 | A kind of oil gas pretreatment unit |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109224494A (en) * | 2017-07-11 | 2019-01-18 | 深圳市瑞能实业股份有限公司 | gas-liquid separator |
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| EP0096019A2 (en) * | 1982-05-27 | 1983-12-07 | Scandiaconsult AB | A method of recovering heat from moist gas by water vapor absorbtion and a plant for carrying out the method |
| CN201454139U (en) * | 2009-06-02 | 2010-05-12 | 殷叶龙 | Oil-gas recovery processing device |
| CN201799132U (en) * | 2010-05-17 | 2011-04-20 | 云南省玉溪市溶剂厂有限公司 | Ester-containing tail gas purification and recovery device with round lower gas intake bottom part and conical top part |
| CN202212079U (en) * | 2011-08-05 | 2012-05-09 | 新昌县日利实业有限公司 | Oil and gas separation system for tentering setter |
| CN204107268U (en) * | 2014-05-30 | 2015-01-21 | 中国石油化工股份有限公司 | Device for recovering oil and gas |
| CN205360650U (en) * | 2015-12-01 | 2016-07-06 | 北京明天和创科贸有限公司 | Oil gas preprocessing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430256A (en) * | 2010-09-29 | 2012-05-02 | 哈尔滨迅普科技发展有限公司 | Condensing oil mist purifier |
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2015
- 2015-12-01 CN CN201510854999.0A patent/CN105771299B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0096019A2 (en) * | 1982-05-27 | 1983-12-07 | Scandiaconsult AB | A method of recovering heat from moist gas by water vapor absorbtion and a plant for carrying out the method |
| CN201454139U (en) * | 2009-06-02 | 2010-05-12 | 殷叶龙 | Oil-gas recovery processing device |
| CN201799132U (en) * | 2010-05-17 | 2011-04-20 | 云南省玉溪市溶剂厂有限公司 | Ester-containing tail gas purification and recovery device with round lower gas intake bottom part and conical top part |
| CN202212079U (en) * | 2011-08-05 | 2012-05-09 | 新昌县日利实业有限公司 | Oil and gas separation system for tentering setter |
| CN204107268U (en) * | 2014-05-30 | 2015-01-21 | 中国石油化工股份有限公司 | Device for recovering oil and gas |
| CN205360650U (en) * | 2015-12-01 | 2016-07-06 | 北京明天和创科贸有限公司 | Oil gas preprocessing device |
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| CN105771299A (en) | 2016-07-20 |
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