CN201735205U - Layered adsorption oil gas recovery device - Google Patents
Layered adsorption oil gas recovery device Download PDFInfo
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- CN201735205U CN201735205U CN201020252198XU CN201020252198U CN201735205U CN 201735205 U CN201735205 U CN 201735205U CN 201020252198X U CN201020252198X U CN 201020252198XU CN 201020252198 U CN201020252198 U CN 201020252198U CN 201735205 U CN201735205 U CN 201735205U
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Abstract
The utility model discloses a layered adsorption oil gas recovery device which is used for the recovery of the oil gas discharged by the oil tank of a filling station. The air discharge outlet of an underground oil tank is connected with the inlet of a pressure release pump. The outlet of the pressure release pump is connected with the inlet of a condensing tank. The liquid outlet at the lower part of the condensing tank is connected with the underground oil tank. The gas outlet at the upper part of the condensing tank is connected with the inlet of an adsorption tank. A valve is arranged on the pipeline between the gas outlet of the condensing tank and the inlet of the adsorption tank. The gas outlet at the top of the adsorption tank is connected with an air discharge pipe. The lower inlet of the adsorption tank is connected with a vacuum pump. A valve is installed on the pipeline between the inlet of the adsorption tank and the vacuum pump. The outlet of the vacuum pump is connected with the underground oil tank. The utility model has the effects as follows: the layered adsorption oil gas recovery device fills different types of adsorbents in the adsorption tank to adsorb the oil gas by layers, solves the problem of high temperature hot spots at the upper part of an adsorbent bed during the adsorption, reduces the hidden danger during the adsorption, and at the same time avoids the problems of short adsorption and desorption turnover time, great adsorbent demand and high operating cost.
Description
Technical field
The utility model relates to oil gas recovery technology field, particularly the condensation of gas station's employing, the oil tank device for recovering oil and gas that adsorbent layering absorption combines with the vacuum desorption mode.
Background technology
At present, in existing several oil-gas recovery methods, the treatment effeciency height of absorption method, the easy satisfied 25g/m that is lower than
3Exhaust emission standard, but absorption method is easy to generate high temperature hotspot, has certain potential safety hazard.Be easy to generate the high temperature hotspot problem for fear of absorption method activated carbon bed, the gas station adopts the process of " condensation+absorption " usually.Oil gas is condensed to about-40 ℃ earlier, make most of oil gas liquefaction, the low temperature oil gas that does not condense adsorbs through adsorption tanks again, because absorption can reach the very high rate of recovery, concentration of emission is also low, can reach discharging standards, in addition, low temperature oil gas through condensation also can effectively prevent the adsorbent bed problem that is easy to generate high temperature hotspot, and has avoided the too big problem of condensation method deep cooling energy consumption.Because of condensed low temperature oil gas is only bigger to the adsorbent bed cooling effect of its entrance area, and very little to the adsorbent bed cooling effect of its exit region, the adsorption tanks exit region is adsorbent bed still to exist high temperature hotspot problem, potential safety hazard bigger.While is a kind of adsorbent because existing oil gas adsorption technology is all packed in adsorption tanks, packed density is big, adsorbance is big, time of break-through is long, the adsorbent of temperature rise as if packing into, cooling effect because of inlet oil gas, the adsorbent bed temperature rise in bottom is lower, security is higher, and the adsorbent bed temperature rise in top is very big, potential safety hazard is very big; The adsorbent that packed density is little, adsorbance is little, time of break-through is short, temperature rise is low if adsorption tanks are packed into, then the adsorbent bed temperature rise in bottom and top is all relatively low, security is higher, but exist absorption, desorption to replace the time weak point, perhaps need a large amount of adsorbents, thereby operating cost is raise.
The utility model content
The purpose of this utility model is: a kind of device for recovering oil and gas of layering absorption is provided, adopts condensation, layering absorption and vacuum desorption mode to reclaim oil gas; Same adsorption tanks filling variety classes adsorbent to oil gas layering from the bottom to top adsorb, when making gas station's buried tank receive oil and automobile fuel filler, the gas concentration that gives off reaches discharge standard.
The technical solution adopted in the utility model is: the device for recovering oil and gas of layering absorption, mainly form by release of pressure pump, cooling cylinder, adsorption tanks, blast pipe, vavuum pump and pipeline, it is characterized in that: the exhaust outlet of buried tank has pipeline to connect the release of pressure pump inlet, the release of pressure pump discharge has pipeline to connect the cooling cylinder inlet, the liquid outlet of cooling cylinder bottom has pipeline to connect buried tank, and the liquid in cooling cylinder can be transported in the buried tank.The gas vent on cooling cylinder top has pipeline to connect the inlet of adsorption tanks, and on the pipeline between the gas vent of cooling cylinder enters the mouth to adsorption tanks valve is arranged; The gas outlet at adsorption tanks top is connected with blast pipe.There is pipeline to connect vavuum pump at the bottom of adsorption tanks inlet, on adsorption tanks enter the mouth pipeline between the vavuum pump, valve arranged.The vacuum delivery side of pump has pipeline to connect buried tank.
Described adsorption tanks have two, to the pipeline between the blast pipe valve are arranged respectively at two adsorption tanks.
In described two adsorption tanks lower floor's adsorbent and upper strata adsorbent are housed respectively.
Loading density is big in the adsorption tanks bottom, adsorbance is big, time of break-through is long, lower floor's adsorbent of temperature rise, and lower floor's adsorbent mainly selects for use specific area big, the adsorbent of pore-size distribution 2～4nm; The upper strata adsorbent that loading density is little on adsorption tanks top, adsorbance is little, time of break-through is short, temperature rise is low, the upper strata adsorbent mainly selects for use pore volume big, the adsorbent of pore-size distribution 3～6nm, the problem that existing to solve " condensation+absorption " oil-gas recovery method exists.
The operation principle of the device for recovering oil and gas of summary layering absorption: consult Fig. 1.(1) when the pressure in the underground oil tank 1 reaches setting value, the oil gas that release of pressure pump 2 begins to aspirate in the buried tank 1 enters oil gas cooling cylinder 3; (2) after oil gas entered oil gas cooling cylinder 3, cooling cylinder 3 freezed, and most of oil gas is condensed into liquid oil product, and the liquid oil product of condensation returns buried tank 1.(3) oil gas under not condensing in cooling cylinder 3 enters in the adsorption tanks 4 that dissimilar adsorbents are housed layering from the bottom to top and adsorbs, most hydrocarbons be attracted to adsorbent bed on, air in the oil gas enters atmosphere from blast pipe 7, and adsorption tanks 4 are generally hocket more than two or two absorption and desorption.(4) when adsorption tanks 4 adsorb saturated and do not penetrate as yet, oil gas is switched to another adsorption tanks 4 layerings to be adsorbed, start vavuum pump 7 simultaneously, adopt vavuum pump 8 to carry out desorption to the adsorption tanks 4 that adsorb oil gas, the high-concentration oil vapor that desorption comes out returns buried tank 1 and reclaims.
The beneficial effects of the utility model: the device for recovering oil and gas of the utility model layering absorption, in adsorption tanks the dissimilar adsorbent of filling to oil gas layering adsorb, can effectively solve the high temperature hotspot problem on adsorbent bed top in the adsorption process, reduced the potential safety hazard of adsorption process, it is short to have avoided suction, desorption to replace the time simultaneously, or needs a large amount of adsorbents, problem that operating cost is high.Oil gas recovery rate can reach 99%, and exhaust of oil concentration is less than 5g/m
3, be better than the minimum requirements of national regulation greatly, can prevent effectively that the gas station from discharging oil gas in atmosphere, reduced the hidden danger of environmental pollution and fire explosion, bring tangible economic benefit and social benefit to the gas station.
Description of drawings
Fig. 1 is the device for recovering oil and gas structural representation of the utility model layering absorption.
Among the figure, 1. buried tank, 2. release of pressure pump, 3. cooling cylinder, 4. adsorption tanks, 5. lower floor's adsorbent, 6. upper strata adsorbent, 7. blast pipe, 8. vavuum pump.
The specific embodiment
Embodiment 1: the device for recovering oil and gas with a layering absorption is an example, and the utility model is described in further detail.
Consult Fig. 1.The device for recovering oil and gas of the utility model layering absorption mainly is made up of release of pressure pump 2, cooling cylinder 3, adsorption tanks 4, blast pipe 7, vavuum pump 8 and pipeline.The exhaust outlet at buried tank 1 top has pipeline to connect 2 imports of release of pressure pump, and 2 outlets of release of pressure pump have pipeline to connect cooling cylinder 3 inlets, and the liquid outlet of cooling cylinder 3 bottoms has pipeline to connect buried tank 1, will be in the liquid in the cooling cylinder 3 can be transported to buried tank 1.The gas vent on cooling cylinder 3 tops has the be connected in parallel inlet of two adsorption tanks 4 of pipeline, and to the pipeline between adsorption tanks 4 inlets valve is arranged at the gas vent of cooling cylinder 3; The gas outlet at two adsorption tanks 4 tops is connected on the blast pipe 7 simultaneously.There is pipeline to connect a vavuum pump 8 at the bottom of two adsorption tanks 4 inlet, on adsorption tanks 4 enter the mouth pipeline between the vavuum pump 8, valve arranged.The outlet of vavuum pump 8 has pipeline to connect buried tank 1.
Lower floor's adsorbent 5 and upper strata adsorbent 6 are housed respectively in two adsorption tanks 4.Lower floor's adsorbent 5 selects for use the aperture to be distributed as the adsorbent of 3nm; Upper strata adsorbent 6 is selected the adsorbent of pore-size distribution 5nm for use.
Gas station's oil gas recovery rate reaches 99%, and exhaust of oil concentration is less than 5g/m
3, far below national standard, gas station's ambient atmosphere environment is not contaminated.
Claims (4)
1. the device for recovering oil and gas of layering absorption, mainly by release of pressure pump (2), cooling cylinder (3), adsorption tanks (4), blast pipe (7), vavuum pump (8) and pipeline are formed, it is characterized in that: the exhaust outlet of buried tank (1) has pipeline to connect release of pressure pump (2) import, release of pressure pump (2) outlet has pipeline to connect cooling cylinder (3) inlet, the liquid outlet of cooling cylinder (3) bottom has pipeline to connect buried tank (1), the gas vent on cooling cylinder (3) top has pipeline to connect the inlet of adsorption tanks (4), and on the pipeline between the gas vent of cooling cylinder (3) enters the mouth to adsorption tanks (4) valve is arranged; The gas outlet at adsorption tanks (4) top is connected with blast pipe (7), inlet has pipeline to connect vavuum pump (8) in the bottom of adsorption tanks (4), on adsorption tanks (4) enter the mouth pipeline between the vavuum pump (8) valve is arranged, the outlet of vavuum pump (8) has pipeline to connect buried tank (1).
2. the device for recovering oil and gas of layering absorption according to claim 1, it is characterized in that: described adsorption tanks (4) have two, to the pipeline between the blast pipe valve are arranged respectively at two adsorption tanks (4).
3. the device for recovering oil and gas of layering absorption according to claim 1 and 2 is characterized in that: lower floor's adsorbent (5) and upper strata adsorbent (6) are housed respectively in described two adsorption tanks (4).
4. the device for recovering oil and gas of layering absorption according to claim 3, it is characterized in that: lower floor's adsorbent (5) is selected the adsorbent of pore-size distribution 2～4nm for use; Upper strata adsorbent (6) is selected the adsorbent of pore-size distribution 3～6nm for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020252198XU CN201735205U (en) | 2010-06-29 | 2010-06-29 | Layered adsorption oil gas recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020252198XU CN201735205U (en) | 2010-06-29 | 2010-06-29 | Layered adsorption oil gas recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201735205U true CN201735205U (en) | 2011-02-09 |
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ID=43550484
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020252198XU Expired - Lifetime CN201735205U (en) | 2010-06-29 | 2010-06-29 | Layered adsorption oil gas recovery device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688654A (en) * | 2012-05-25 | 2012-09-26 | 南京威尔化工有限公司 | Petroleum vapor recovery adsorption bed |
| CN104474837A (en) * | 2014-11-04 | 2015-04-01 | 中国石油化工股份有限公司 | Passivation method of oil-gas recovery system adsorbent |
| CN104815519A (en) * | 2015-04-09 | 2015-08-05 | 北京信诺海博石化科技发展有限公司 | Recovery technology for volatile oil gas in lightweight aromatic hydrocarbons filling process |
| CN109772088A (en) * | 2019-03-05 | 2019-05-21 | 江苏鼎程新能源科技有限公司 | A kind of gas station device for recovering oil and gas three times |
-
2010
- 2010-06-29 CN CN201020252198XU patent/CN201735205U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688654A (en) * | 2012-05-25 | 2012-09-26 | 南京威尔化工有限公司 | Petroleum vapor recovery adsorption bed |
| CN104474837A (en) * | 2014-11-04 | 2015-04-01 | 中国石油化工股份有限公司 | Passivation method of oil-gas recovery system adsorbent |
| CN104815519A (en) * | 2015-04-09 | 2015-08-05 | 北京信诺海博石化科技发展有限公司 | Recovery technology for volatile oil gas in lightweight aromatic hydrocarbons filling process |
| CN109772088A (en) * | 2019-03-05 | 2019-05-21 | 江苏鼎程新能源科技有限公司 | A kind of gas station device for recovering oil and gas three times |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110209 |