CN202909604U - Oil vapor recovery device - Google Patents
Oil vapor recovery device Download PDFInfo
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- CN202909604U CN202909604U CN 201220574525 CN201220574525U CN202909604U CN 202909604 U CN202909604 U CN 202909604U CN 201220574525 CN201220574525 CN 201220574525 CN 201220574525 U CN201220574525 U CN 201220574525U CN 202909604 U CN202909604 U CN 202909604U
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Abstract
The utility model relates to an oil vapor recovery device and method, and belongs to the technical field of environmental protection and energy conservation. The oil vapor recovery device comprises an underground oil tank, an induced draft pump, an adsorption tank, a vacuum pump and a condensate separation tank and further comprises a finned-tube air-cooled condenser, wherein the finned-tube air-cooled condenser is connected between the vacuum pump and the condensate separation tank. The oil vapor recovery device adopts the technology of adsorption at first and then cooling; after adsorption, most air in oil vapor is filtered and emitted to the atmosphere, the cooling capability required for condensing desorbed high-concentration hydrocarbon vapor is greatly reduced in comparison with that required for directly condensing an oil vapor and air mixture; and the adopted process is that the original cooling unit structurally consisting of a compressor, a condenser, an expansion valve and an evaporator is directly replaced with the air-cooled condenser, so that both the manufacturing cost and the running cost of the whole cooling segment are greatly lowered.
Description
Technical field
The utility model belongs to environmental protection and field of energy-saving technology, especially relates to a kind of oil gas reclaiming device for gas station and method thereof.
Background technology
Owing to being very easy to volatilization, the various volatile organic matters (VOCs) such as gasoline produce very serious evaporating loss, so the gas station is easy to abrim " oil flavor ".The a large amount of evaporations of these oil gas also directly are discharged in the atmosphere, not only cause serious quantity loss and Quality Down, and have seriously polluted atmospheric environment and stayed great disaster hidden-trouble.Therefore the gas station must carry out the oil gas recovery.
Gas station oil gas reclaims and to be divided into one-level gas recovery system for oil and secondary gas recovery system for oil: method and apparatus from oil truck to gas station's tank unloading process that collect oil gas from is called the one-level gas recovery system for oil, and the oil gas of recovery is transported to oil depot or oil plant concentrates, absorption or burning disposal through oil truck; The secondary gas recovery system for oil is to be with the method and apparatus of oil gas collection in gas station's oil storage tank of volatilization in the gas station in the automobile fuel filler process.But the two-stage gas recovery system for oil is owing to the vapor liquid equilibrium of not accomplishing " to extract one liter of oil out and just refill one liter of gas " from volume, so can not effectively prevent exhaust of oil, therefore country to have formulated standard No. be the GB20592-2007 standard, force to carry out installing device for recovering oil and gas in the gas station, be so-called No. three reclaimers, and determined storage tank farm, gasoline station oil gas discharge control criterion enforcement zone and time, and exhaust of oil limit value.
At present, the separation and recovery method of oil gas and air has absorption process, absorption method, condensation method and membrane separation process etc.What be applied to the gas station mainly is condensation method, absorption method and membrane separation process, but this is several all not ideal enough aspect economic indicator and technical performance, comparatively speaking, the higher operating cost of its power is high, the partially complicated manufacturing cost of technique is higher, more can only embody its environmental benefit, economic benefit is not obvious.
The utility model content
For the defective that the above-mentioned background technology exists, the technical problems to be solved in the utility model provides that a kind of exhaust of oil is up to standard, easy operating, lower-cost device for recovering oil and gas and method.
For solving the problems of the technologies described above, the utility model is achieved by the following technical programs:
A kind of device for recovering oil and gas, comprise buried tank, air inducing pump, adsorption tanks, vavuum pump, condensate liquid knockout drum, described device for recovering oil and gas comprises the fin tube type air-cooled condenser, and described fin tube type air-cooled condenser is connected between described vavuum pump and the condensate liquid knockout drum.
Use the oil-gas recovery method of said apparatus, comprising:
(1) when the pressure of underground oil tank reached setting value, the bleed pump was started working, and the oil gas in the suction buried tank enters adsorption tanks;
(2) oil gas enters adsorption tanks, utilizes in the adsorption tanks adsorbent to the effect of the affinity of hydrocarbon molecule, and with oil gas and air separation, gas discharging directly into atmosphere up to standard when adsorption tanks adsorb when saturated, utilizes vavuum pump that the saturated adsorption tank is carried out the vacuum desorption regenerative operation;
(3) desorption high concentration of hydrocarbon steam out enters the fin tube type air-cooled condenser, and in the fin tube type air-cooled condenser, the hydrocarbon vapor portion is cooled into liquid state and enters in the condensate liquid knockout drum, and all the other high concentrations of gas return buried tank.
The technique of rear cooling is adsorbed first in the utility model utilization, because after absorption, most air in the oil gas enter atmosphere after filtration, the high concentration of hydrocarbon vapor phase of condensation solution sucking-off has substantial degradation than the refrigerating capacity that direct condensed oil-gas air Mixture needs, the technique that we adopt is the structure that directly replaces former compressor, condenser, expansion valve, the such refrigeration unit of evaporimeter with an air-cooled condenser, and the manufacturing cost of whole like this cooling section and operating cost have greatly reduction.
Further improve as the utility model, described adsorption tanks are the adsorption tanks of two alternations.For absorbing process, adsorption process and desorption process can not carry out simultaneously in the same adsorption tanks, and the adsorbance of adsorption tanks is limited, must carry out desorption process when absorption is saturated, will exceed standard otherwise discharge tail gas.Adopt the technique of two adsorption tanks, when an adsorption tanks absorption was saturated, device can automatically switch to another adsorption tanks to be continued absorption and starts simultaneously vavuum pump the saturated adsorption tank is carried out regenerative operation.The adsorption/desorption assurance device can continually move thereby such two adsorption tanks just can hocket.
Description of drawings
Accompanying drawing is the utility model device for recovering oil and gas schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is made and to be further specified.
Whole oil-gas recovery method can be divided into: oil gas collection → adsorption filtration → cooling is reclaimed.Be specially three phases:
(1) when the pressure of underground oil tank 1 reached setting value, bleed pump 2 was started working, and the oil gas in the suction buried tank 1 enters adsorption tanks 3 or 4;
(2) oil gas enters adsorption tanks 3 or 4, utilize the interior adsorbent of adsorption tanks to the effect of the affinity of hydrocarbon molecule, with oil gas and air separation, gas after the adsorption treatment is emptying front through sample tap 5 sample examinations, gas up to standard is by evacuated tube 6 discharging directly into atmosphere, when one of them adsorption tanks adsorbs when saturated, utilize 7 pairs of saturated adsorption tanks of vavuum pump to carry out the vacuum desorption regenerative operation;
(3) the high concentration of hydrocarbon steam that desorbs enters fin tube type air-cooled condenser 8, and in fin tube type air-cooled condenser 8, the hydrocarbon vapor portion is cooled into liquid state and enters in the condensate liquid knockout drum 9, and all the other high concentrations of gas return buried tank 1.
With respect to traditional condensation method, membrane separation process and absorption method, adopt the advantage of this technique to be:
(1) adsorption tanks of two alternations of employing, when adsorption tanks adsorb when saturated, can automatically switch to another adsorption tanks and continue absorption, thereby assurance device can 24 hours incessantly operation, thereby having avoided single adsorption tanks to adsorb must shutting down when saturated carries out the desorb operation otherwise discharging situation not up to standard;
(2) adopt the mode of cooling off afterwards of adsorbing first, the process for cooling section is used for processing the high concentration of hydrocarbon steam of separating sucking-off, thereby greatly reduced the refrigerating capacity that direct condensation needs, thereby cooling section does not re-use the structure of traditional compressor, condenser, choke valve, evaporimeter, and directly adopt the mode of an air-cooled condenser, greatly saved manufacturing cost and operating cost;
(3) adopt the major path saw tooth fin, it is original 1/3 that defrosting time is shortened to, and adopts displacement evaporation fin, and heat exchange efficiency has improved 30% in the situation of equal volume condenser size;
(4) oil gas recovery rate can reach 98%, and concentration of oil and gas discharged is less than 5g/m
3, be better than the discharge standard of national regulation;
(5) process structure is simple, easy operating, and cost is lower, and operate power about 1KW, is the part of other group technologies only only, has obvious economic benefit and social benefit.
The description of above embodiment is comparatively concrete, detailed; but can not therefore be interpreted as the restriction to this patent scope; should be noted that; for the person of ordinary skill of the art; without departing from the concept of the premise utility; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (2)
1. device for recovering oil and gas, comprise buried tank, air inducing pump, adsorption tanks, vavuum pump, condensate liquid knockout drum, it is characterized in that: described device for recovering oil and gas comprises the fin tube type air-cooled condenser, and described fin tube type air-cooled condenser is connected between described vavuum pump and the condensate liquid knockout drum.
2. device for recovering oil and gas according to claim 1, it is characterized in that: described adsorption tanks are the adsorption tanks of two alternations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220574525 CN202909604U (en) | 2012-11-02 | 2012-11-02 | Oil vapor recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220574525 CN202909604U (en) | 2012-11-02 | 2012-11-02 | Oil vapor recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202909604U true CN202909604U (en) | 2013-05-01 |
Family
ID=48157952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220574525 Expired - Lifetime CN202909604U (en) | 2012-11-02 | 2012-11-02 | Oil vapor recovery device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202909604U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921269A (en) * | 2012-11-02 | 2013-02-13 | 江苏航天惠利特环保科技有限公司 | Oil gas recycling device |
| CN106742888A (en) * | 2016-12-15 | 2017-05-31 | 安徽科海压缩机制造有限公司 | The shallow cold recovery device of the supercharging of volatile organic steam in a kind of oil gas |
| CN107522158A (en) * | 2016-06-15 | 2017-12-29 | 株式会社龙野 | Device for recovering oil and gas |
-
2012
- 2012-11-02 CN CN 201220574525 patent/CN202909604U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921269A (en) * | 2012-11-02 | 2013-02-13 | 江苏航天惠利特环保科技有限公司 | Oil gas recycling device |
| CN107522158A (en) * | 2016-06-15 | 2017-12-29 | 株式会社龙野 | Device for recovering oil and gas |
| CN106742888A (en) * | 2016-12-15 | 2017-05-31 | 安徽科海压缩机制造有限公司 | The shallow cold recovery device of the supercharging of volatile organic steam in a kind of oil gas |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |
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| CX01 | Expiry of patent term |