CN103100236A - Oil gas recovery method - Google Patents
Oil gas recovery method Download PDFInfo
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- CN103100236A CN103100236A CN2013100739517A CN201310073951A CN103100236A CN 103100236 A CN103100236 A CN 103100236A CN 2013100739517 A CN2013100739517 A CN 2013100739517A CN 201310073951 A CN201310073951 A CN 201310073951A CN 103100236 A CN103100236 A CN 103100236A
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Abstract
The invention relates to the technical field of oil gas recovery, and in particular relates to an oil gas recovery method. The method comprises the following steps of: cooling mixed gas which is collected in advance and contains oil gases to be -26 to -35 DEG C, thereby obtaining a first liquid oil product; and recovering the obtained first liquid oil product. According to the oil gas recovery method provided by the invention, the liquid oil product is obtained by directly separating the mixed gas containing the oil gases by utilizing a temperature reduction and condensation method, and the obtained liquid oil product is recovered, so that the technical problems that in the prior art, oil gas components in the mixed gas are absorbed by absorption media (high-selectivity absorbents and adsorbents), and then recovery oil products can be obtained through further treatment on absorption media containing oil gases for multiple times, thus the treatment process is complex, can be solved. The oil gases can be easily and conveniently recovered through the oil gas recovery method provided by the invention.
Description
Technical field
The present invention relates to the Investigation of Petroleum Vapor Recovery Technology field, in particular to a kind of oil-gas recovery method.
Background technology
Gasoline is a kind of volatile oil product, often can volatilize a large amount of oil gas in the process of emptying, oiling.Wherein not only smell is pungent for the oil gas that goes out of gasoline volatilization, and can be to the ambient atmosphere environment, for example evaporate into and contain a large amount of volatile organic matter (VOC) and benzene in airborne oil gas, not only can strengthen PM2.5 concentration in air, work in this environment for a long time, also influential to the employee's of gas station health.Simultaneously, when oil gas height gathers, VOC mixes with air when reaching finite concentration, and " dodging quick-fried " very easily occurs, and has potential safety hazard.In order to protect the recycling of air ambient, reinforcement petroleum resources, the recycling work of national iterative method petroleum resources.
The method that in correlation technique, oil gas reclaims is mainly, and at first carries out the preliminary collection of oil gas, and the gas that collects in the preliminary collection of oil gas mostly is the mist of oil gas and air; Secondly oil gas separated from described mist and carried out further processing to process obtaining liquid oil, completing thus the recovery of oil gas.
In correlation technique, oil gas is separated the method that adopts and mainly contain the methods such as absorption method, absorption process from described mist.
Particularly, absorption method refers to described mist is passed in the adsorbent equipment that is filled with the high selectivity adsorbent, utilize the oil gas in high selectivity adsorbent absorption mist, after the high selectivity adsorbent reaches adsorption saturation, utilize steaming process or decompression method to carry out desorption and regeneration, wherein the oil product that goes out of desorption absorbs with oil product again.
Absorption process refers to that the mist that will collect contacts with spray or mode of washing with absorbent, makes the oil-gas component in mist be absorbed the agent absorption.After oil-gas component was absorbed, the absorbent that the method such as adopt distillation or vacuumize will be rich in oil gas carried out desorb, thereby reaches the purpose that oil gas reclaims.
To sum up, when carrying out the oil gas recovery in correlation technique from the mist that collects, main by absorbing the oil-gas component in medium (high selectivity adsorbent, absorbent) absorption mist, need afterwards the absorption medium that is rich in oil gas is repeatedly processed just further and can be recycled oil product, the processing procedure more complicated.
Summary of the invention
The object of the present invention is to provide oil-gas recovery method, to solve the above problems.
Oil-gas recovery method is provided in an embodiment of the present invention, has comprised:
The mist that contains oil gas that gathers in advance is cooled to subzero 26～subzero 35 degrees centigrade, obtains the first liquid oil product;
The described first liquid oil product that obtains is reclaimed.
The oil-gas recovery method of the above embodiment of the present invention comprises: the mist that contains oil gas that will gather in advance is cooled to subzero 26～subzero 35 degrees centigrade, thereby can make the oil-gas component in mist be condensed into liquid condition, and then obtain the first liquid oil product, the first liquid oil product that obtains is reclaimed.
Oil-gas recovery method provided by the invention, utilize the method for cooling condensation directly to separate to obtain liquid oil and the liquid oil that obtains is reclaimed to have overcome in the correlation technique by absorbing medium (high selectivity adsorbent, absorbent) from the mist that contains oil gas and absorb oil-gas component in mist, need afterwards the absorption medium that is rich in oil gas is repeatedly processed just further and can be recycled oil product, therefore the technical problem of processing procedure more complicated can make oil gas reclaim by oil-gas recovery method of the present invention easy.
Description of drawings
Fig. 1 is the flow chart of the embodiment of the present invention 1 oil-gas recovery method;
Fig. 2 is the flow chart of the embodiment of the present invention 2 oil-gas recovery methods.
The specific embodiment
Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
The embodiment of the present invention 1 provides a kind of oil-gas recovery method, and as shown in Figure 1, main treatment step comprises:
Step S11: the mist that contains oil gas that will gather in advance is cooled to subzero 26～subzero 35 degrees centigrade, obtains the first liquid oil product;
Step S12: the described first liquid oil product that will obtain reclaims.
The oil-gas recovery method of the present embodiment comprises: the mist that contains oil gas that will gather in advance is cooled to subzero 26～subzero 35 degrees centigrade, thereby can make the oil-gas component in mist be condensed into liquid condition, and then obtain the first liquid oil product, the first liquid oil product that obtains is reclaimed.
The oil-gas recovery method that the present embodiment provides, utilize the method for cooling condensation directly to separate to obtain liquid oil and the liquid oil that obtains is reclaimed to have overcome in the correlation technique by absorbing medium (high selectivity adsorbent, absorbent) from the mist that contains oil gas and absorb oil-gas component in mist, need afterwards the absorption medium that is rich in oil gas is repeatedly processed just further and can be recycled oil product, the technical problem of processing procedure more complicated, therefore the oil-gas recovery method by the present embodiment can make the oil gas recovery easy.
Embodiment 2
The present embodiment 2 provides a kind of preferred embodiment of oil-gas recovery method on the basis of embodiment 1, as shown in Figure 2, main treatment step comprises:
Step S21: the mist that contains oil gas that will gather in advance is cooled to 1～5 degree centigrade;
Step S22: the mist that will be cooled to 1～5 degree centigrade continues to be cooled to subzero 26～subzero 35 degrees centigrade, obtains the first liquid oil product;
Step S23: the described first liquid oil product that will obtain reclaims.
The mist that contains oil gas that gathers in advance in the present embodiment mainly comprises constituent of air and oil-gas component.
Mainly comprise nitrogen, oxygen, carbon dioxide and water vapour in wherein said constituent of air.
In step S21, the mist that contains oil gas that gathers in advance is cooled to 1～5 degree centigrade, can make the most of water vapor in mist be condensed into liquid condition, thereby make the oil-gas component state consistency in the mist that is cooled to 1～5 degree centigrade, be conducive to mist is continued the cooling liquid oil that obtains.
Further, the shared proportion of the steam in mist is smaller, therefore mist is cooled to the aqueous water that obtains after 1～5 degree centigrade fewer, and the aqueous water that does not therefore need to produce is discharged.
Particularly, the mist that contains oil gas that gathers in advance is cooled to 1～5 degree centigrade, comprising: the mist that contains oil gas that will gather in advance is cooled to 1,2,3,4 or 5 degree centigrade.
Preferably, the mist that contains oil gas that gathers in advance is cooled to 3 degrees centigrade.
Preferably, the mist that contains oil gas that gathers in advance is cooled to 4 degrees centigrade.
Continue to be cooled to by the mist that will be cooled to 1～5 degree centigrade in step S22 subzero 26～subzero 35 degrees centigrade can to make the most of oil gas components condense in mist be the first liquid oil product.
After the temperature of mist was lower than zero degrees celsius, the aqueous water that produces in step S21 became solid ice, can not be blended in the first liquid oil product of generation.
Because after the temperature of mist being down to subzero 26～subzero 35 degrees centigrade, the most of oil gas component in mist has been condensed into the first liquid oil product, the residual gas that therefore obtains can reach the standard of direct discharging.
If but the rate of recovery of oil gas and the discharge quality of residual gas are had higher requirement, the oil-gas recovery method of the present embodiment is after obtaining the first liquid oil product, also comprise: remaining gas is continued to be cooled to subzero 40～subzero 70 degrees centigrade, obtain the second liquid oil product; With the described second liquid Oil Recovery that obtains.So can further improve the rate of recovery of oil gas, and make the gas of discharging cleaner, can be to environment.
Preferably, described remaining gas is continued to be cooled to subzero 40～subzero 70 degrees centigrade, comprising: remaining gas is continued to be cooled to subzero 60～subzero 70 degrees centigrade.
In the present embodiment, in step S21 and step S22, the mist that contains oil gas that gathers is in advance carried out cooling method to be had multiple, for example, utilization is loaded with the described mist that contains oil gas that the evaporimeter of cold-producing medium will gather in advance and carries out coolingly, and the cold-producing medium that wherein uses is the R404A cold-producing medium.
Again for example, utilize the described mist that contains oil gas that the liquid nitrogen refrigerating method will gather in advance to carry out cooling.
Adopt oil-gas recovery method of the present invention, can access following at least one beneficial effect.
1. can directly separate obtaining liquid oil by cooling from the mist that collects, compare with adopting absorption method, absorption process in correlation technique, it is easy that oil-gas recovery method of the present invention can make oil gas reclaim.
2. realize to contain the means that the mist of oil gas cools many, and the technique that realizes is simple, for example utilizes compressor cooling.
3. utilize the method cool to separate from the mist that contains oil gas and obtain liquid oil, can improve oil gas recovery rate, thereby also can improve the discharge standard that obtains the residual gas after liquid oil.
4. separate obtaining in the process of liquid oil by the method that cools from the mist that contains oil gas, can effectively overcome the technical problem of easily blasting when in mist, the oil-gas component proportion is larger.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. oil-gas recovery method, is characterized in that, comprising:
The mist that contains oil gas that gathers in advance is cooled to subzero 26～subzero 35 degrees centigrade, obtains the first liquid oil product;
The described first liquid oil product that obtains is reclaimed.
2. method according to claim 1, is characterized in that, the described mist that contains oil gas that will gather in advance is cooled to subzero 26～subzero 35 degrees centigrade, comprising:
The mist that contains oil gas that gathers in advance is cooled to subzero 35 degrees centigrade.
3. method according to claim 1, is characterized in that, the described mist that contains oil gas that will gather in advance is cooled to subzero 26～subzero 35 degrees centigrade, comprising:
The mist that contains oil gas that gathers in advance is cooled to 1～5 degree centigrade;
The described mist that is cooled to 1～5 degree centigrade is cooled to subzero 26～subzero 35 degrees centigrade.
4. method according to claim 3, is characterized in that, the described mist that contains oil gas that will gather in advance is cooled to 1～5 degree centigrade, comprising:
The mist that contains oil gas that gathers in advance is cooled to 3 degrees centigrade.
5. method according to claim 3, is characterized in that, the described mist that contains oil gas that will gather in advance is cooled to 1～5 degree centigrade, comprising:
The mist that contains oil gas that gathers in advance is cooled to 4 degrees centigrade.
6. method according to claim 1, is characterized in that, described obtain the first liquid oil product after, also comprise:
Remaining gas is continued to be cooled to subzero 40～subzero 70 degrees centigrade, obtain the second liquid oil product;
With the described second liquid Oil Recovery that obtains.
7. method according to claim 6, is characterized in that, described remaining gas continued to be cooled to subzero 40～subzero 70 degrees centigrade, comprising:
Remaining gas is continued to be cooled to subzero 60～subzero 70 degrees centigrade.
8. method according to claim 1, is characterized in that, the described mist that contains oil gas that will gather in advance is cooled to subzero 26～subzero 35 degrees centigrade, comprising:
Utilization is loaded with the described mist that contains oil gas that the evaporimeter of cold-producing medium will gather in advance and is cooled to subzero 26～subzero 35 degrees centigrade.
9. method according to claim 9, is characterized in that, described cold-producing medium is the R404A cold-producing medium.
10. method according to claim 1, is characterized in that, the described mist that contains oil gas that will gather in advance is cooled to subzero 26～subzero 35 degrees centigrade, comprising:
Utilize the described mist that contains oil gas that the liquid nitrogen refrigerating method will gather in advance to be cooled to subzero 26～subzero 35 degrees centigrade.
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| CN2013100739517A CN103100236A (en) | 2013-03-08 | 2013-03-08 | Oil gas recovery method |
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| CN2013100739517A CN103100236A (en) | 2013-03-08 | 2013-03-08 | Oil gas recovery method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113526446A (en) * | 2020-04-13 | 2021-10-22 | 安徽德明石油化工设备有限公司 | Internet of things oil gas recovery online monitoring system equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1366021A (en) * | 2001-01-15 | 2002-08-28 | 张文慧 | Process and apparatus for recovering hydrocarbons from hydrocarbon and air mixed gas |
| CN101342427A (en) * | 2007-07-09 | 2009-01-14 | 中国石油化工股份有限公司 | Oil gas recovery method |
| CN101348729A (en) * | 2007-07-18 | 2009-01-21 | 王建基 | Compression condensing type oil gas recovery process technology |
| CN101793456A (en) * | 2010-03-03 | 2010-08-04 | 清华大学 | Condensation method for oil gas recovery |
| CN102161905A (en) * | 2011-03-11 | 2011-08-24 | 南京都乐制冷设备有限公司 | Oil gas recovering system |
-
2013
- 2013-03-08 CN CN2013100739517A patent/CN103100236A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1366021A (en) * | 2001-01-15 | 2002-08-28 | 张文慧 | Process and apparatus for recovering hydrocarbons from hydrocarbon and air mixed gas |
| CN101342427A (en) * | 2007-07-09 | 2009-01-14 | 中国石油化工股份有限公司 | Oil gas recovery method |
| CN101348729A (en) * | 2007-07-18 | 2009-01-21 | 王建基 | Compression condensing type oil gas recovery process technology |
| CN101793456A (en) * | 2010-03-03 | 2010-08-04 | 清华大学 | Condensation method for oil gas recovery |
| CN102161905A (en) * | 2011-03-11 | 2011-08-24 | 南京都乐制冷设备有限公司 | Oil gas recovering system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113526446A (en) * | 2020-04-13 | 2021-10-22 | 安徽德明石油化工设备有限公司 | Internet of things oil gas recovery online monitoring system equipment |
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