CN202289823U - Device for condensing and absorbing oil and gas at low temperature and producing ethanol gasoline - Google Patents
Device for condensing and absorbing oil and gas at low temperature and producing ethanol gasoline Download PDFInfo
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- CN202289823U CN202289823U CN2011203930803U CN201120393080U CN202289823U CN 202289823 U CN202289823 U CN 202289823U CN 2011203930803 U CN2011203930803 U CN 2011203930803U CN 201120393080 U CN201120393080 U CN 201120393080U CN 202289823 U CN202289823 U CN 202289823U
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Abstract
The utility model relates to a device for condensing and absorbing oil and gas at low temperature and producing ethanol gasoline. The device comprises a refrigerating machine unit, an ethanol circulating pump, a Venturi ejector, a mixture gas-liquid separator, an ethanol gasoline dispenser, an oil-gas precooling heat exchanger and a gas-liquid separator for the precooled oil gas. The device has a simple structure, requires less equipment, and is low in operation energy consumption, high in oil gas recovery efficiency and particularly applicable to recovery treatment on the oil and gas generated in the gasoline loading/unloading process in a gasoline station.
Description
Technical field
The utility model provides a kind of oil gas cryogenic condensation to absorb and produce the device of ethanol petrol, belongs to environmental protection and field of energy-saving technology.
Background technology
Tank wagon in the underground gasoline tank refueling process and fuel charger in the automobile fuel filler process, all produce higher concentration contain light component oil gas.Investigation statistics shows; Gas station's gasoline cistern is received and dispatched in the oil gas of discharging in the oily process light component volume fraction up to 30%～50%, and a large amount of light components volatilizations get into atmosphere in the gasoline, not only cause the wasting of resources; And have potential safety hazard, cause octane number reduction to a certain degree simultaneously.Developed country has just used such as absorption process, absorption, condensation or film as far back as the eighties in last century and has separated, or the mode of several kinds of process combination reclaims petroleum resources.China is then backward relatively to the research of petroleum resources recovery technology.At present, gas station's oil gas recovery technology commonly used comprises absorption method, absorption process, condensation method, membrane separation process or its process combination.Absorption method produces heat of adsorption in reclaiming the oil gas process, jeopardize the security of operation, need increase analyzing device simultaneously, in order to guarantee the continuity of oil gas removal process, two adsorption column alternate runs need be set also, and investment cost is higher.Absorption process is to utilize oil gas and air solubility different in absorbent, realizes separating of oil gas and air.Membrane separation process oil gas recovery technology is an emerging technology, and present used film is short service life, and investment and operating cost are higher, and high performance membrane material still is in the research and development stage.Condensation method is to utilize various hydro carbons under different temperatures and pressure, to have different saturated vapour pressures, through reducing temperature or increasing pressure, organic matter is freeze-outed, and air then enters atmosphere with gas phase.Condensation method can be divided into direct condensation method and condensation compression method again; The former is general to adopt the multistage continuous type of cooling to reduce the temperature of vaporizing oil-gas; Make the light oil composition cohesion in the oil gas discharge pure air for liquid, the latter generates condensation water after with oil gas compression, condensation and reclaims, and temperature is low more, pressure is high more; The effect that reclaims is just good more, and the investment of facility and operating cost are also high more.
CN01108125.2 has introduced a kind of absorption process and absorption plant of gasoline volatilization oil gas.Device is made up of two absorption towers that store absolute ethyl alcohol, water scrubber and vacuum chamber and vavuum pump.Oil gas through two ethanol absorption towers, water scrubber and vacuum chambers, finally enters atmosphere by vavuum pump successively.This technology not only can reclaim oil gas, and the product ethanol petrol has the octane number higher than feed gasoline, after the steam supply car uses; The pollution that produces still less, but this method technological process is long, equipment needed thereby is more, invests corresponding increase; And obtain the lower aqueous solution of ethanol content, this aqueous solution contains minor amount of oil simultaneously, needs special equipment further to handle; For the less gas station of scale, its economy is less, and applicability reduces.
CN101462689A has introduced a kind of variable frequency oil gas recycling method for petrol station absorption condensation and adsorption.According to this technology; Gas station's one-level oil gas reclaims the group technology that link is solvent absorption and condensing and recycling; After with the low temperature liquid hydrocarbon of condensing and recycling technology-30 ℃～-50 ℃ oil gas being absorbed, oil gas is condensed to-20 ℃～-40 ℃ successively to carry out condensed in two stages and reclaims with-40 ℃～-60 ℃.The absorption of the oil gas degree of depth is reclaimed technology and is used for the recovery of secondary oil gas, after adsorption bed absorption is saturated, utilizes vacuum equipment that oil gas is resolved to oil gas absorption and condenser system.Gas station's oil and gas content is less, and this technological process is longer, and use equipment is many, and its economy is less.
The gas station that US4066423 introduces is made up of two adsorption bed, vavuum pump, condenser, gas-liquid separator, absorbent circulating pump and absorption tower with gas recovery system for oil.Two adsorption tower alternate runs, adsorb saturated after, resolve by liquid-ring vacuum pump; Separate gassing and the water that is mixed with anti-icing fluid and warp cooling that comes from gas-liquid separator; Together be pumped into gas-liquid separator by liquid ring vacuum, fixed gas gets into the absorption tower by the bottom, and the low temperature liquid hydrocarbon that gas-liquid separator reclaims is made absorbent; And through further sending into absorption tower and oil gas counter current contacting by circulating pump after the cooling, unabsorbed oil gas returns adsorption tower.This technology adopts the low temperature recycle-water that adds anti-icing fluid as cooling agent, and the low temperature liquid hydrocarbon absorbs as absorbent and reclaims oil gas, and system's cold is fully reclaimed, but should technology oil gas reclaimer more, invests bigger.
Summary of the invention
To the deficiency of existing oil gas recovery technology, the utility model provides the oil gas cryogenic condensation absorption that a kind of equipment is few, the oil gas organic efficiency is high and has produced the device of ethanol petrol.
The oil gas cryogenic condensation of the utility model absorbs and the device of production ethanol petrol comprises: refrigeration unit, ethanol cycle pump, venturi injector, mixture gas-liquid separator, ethanol petrol dispenser, the pre-cooled heat exchanger of oil gas and pre-cooled oil gas gas-liquid separator; Refrigeration unit inlet with replenish absolute ethyl alcohol and circulation oily ethanol mixed pipe line communicates; The refrigeration unit outlet is communicated with the ethanol cycle pump; The ethanol cycle pump discharge is connected with venturi injector liquid phase inlet; The venturi injector outlet is connected with the mixture gas-liquid separator; Mixture gas-liquid separator gaseous phase outlet is communicated with cleaning equipment for waste organic gas, and the outlet of mixture gas-liquid separator liquid phase is connected with ethanol petrol dispenser and refrigeration unit inlet respectively; Raw material oil gas is connected with the pre-cooled exchanger heat material inlet of oil gas; The pre-cooled heat exchanger cooling of oil gas back oil gas vent is connected with pre-cooled oil gas gas-liquid separator inlet, and pre-cooled oil gas gas-liquid separator gaseous phase outlet is connected with the venturi injector gas access.
In the utility model device, the absolute ethyl alcohol storage tank is set, the absolute ethyl alcohol storage tank is connected with the refrigeration unit inlet.
In the utility model device, refrigeration unit is 0 ℃～-80 ℃ to the cryogenic temperature of working media (ethanol), preferred-20 ℃～-60 ℃.
In the utility model device, raw material oil gas is cooled to-4～4 ℃ through heat exchanger, and most condensation vapors wherein are water, and in pre-cooled oil gas gas-liquid separator, separate.Heat exchanger is selected from plate type heat exchanger, shell-and-tube heat exchanger or heat exchange of heat pipe.The cold logistics of heat exchanger can be low temperature circulation ethanol or the low temperature fixed gas in the utility model device.
In the utility model device, cleaning equipment for waste organic gas is selected from catalytic combustion system, heating power oxidation unit, heat-accumulation combustion device or adsorbent equipment.
In the utility model device, raw material oil gas is received the oil gas that oil or fuel charger give off for gas station's gasoline cistern in automobile hair oil process.
Compare with existing oil gas recovery technology, the oil gas cryogenic condensation of the utility model absorbs and the device of production ethanol petrol has following effect:
(1) energy consumption is low.Raw material oil gas carries out heat exchange with low temperature circulation ethanol or low temperature fixed gas before being got into venturi injector by suction, system capacity is fully used, thereby has reduced operating cost.
(2) simple, small investment of the utility model technology.In the utility model, up to 40%, absolute ethyl alcohol can repeatedly recycle absolute ethyl alcohol, and does not need stripping apparatus to the saturated absorption amount of oil gas, and investment cost is reduced.
(3) octane number of raising motor vehicle fuel reduces environmental pollution.The ethanol phosphorus content is significantly less than gasoline, and ethanol petrol is easy to completing combustion, and its octane number is higher than simple gasoline, makes that carbon compound reduces than burns gasoline in the motor-vehicle tail-gas, and nitrogen oxide type discharging and unburned hydrocarbons discharging significantly reduce.
Description of drawings
Fig. 1 is a kind of concrete formation sketch map of the utility model device;
Fig. 2 is the another kind of concrete sketch map that constitutes of the utility model device.
Wherein: 1, refrigeration unit; 2, ethanol cycle pump; 3, venturi injector; 4, mixture gas-liquid separator; 5, cleaning equipment for waste organic gas; 6, ethanol petrol mediation device; 7, raw material oil gas/low temperature circulation ethanol heat exchanger; 7 ', raw material oil gas/low temperature fixed gas heat exchanger; 8, low temperature circulation ethanol; 9, ethanol surge tank; 10, pre-cooled gas-liquid separator.
The specific embodiment
In the utility model device, absolute ethyl alcohol provides power by the ethanol cycle pump after the refrigeration unit cooling; Pressure is delivered to venturi injector, because the special construction of Venturi tube, ethanol produces negative pressure when venturi injector sprays at a high speed; Thereby the gas phase that the suction gas-liquid separator is discharged, in pipeline after venturi injector and the oil gas absorptive condenser, oil gas is met cold cooling; Simultaneously because the absorption of ethanol; Oil gas is liquid phase by gas phase conversion and is dissolved in the ethanol, absorbs part rich absorbent behind the oil gas and gets into ethanol petrol and be in harmonious proportion device, through with after an amount of gasoline mixes; Sell as ethanol petrol, all the other rich absorbents carry out the oil gas absorption process through the cooling continued.The purified gas of being discharged by the oil gas absorptive condenser enters atmosphere after the oil gas after-treatment device is further handled.
Device according to the utility model; Described oil gas absorptive condenser rear end liquid phase pipeline is connected with ethanol petrol mediation device; The part rich absorbent through with directly sell after an amount of gasoline product mixes as ethanol petrol, all the other rich absorbents then with after the heat exchange of raw material oil gas recycle.
Further specify the formation and the occupation mode of the utility model device below in conjunction with accompanying drawing.
As shown in Figure 1, absolute ethyl alcohol is squeezed into venturi injector 3 by ethanol cycle pump 2 after refrigeration machine 1 cooling, because the special construction of Venturi tube; When cold ethanol when Venturi tube sprays, produce negative pressure, thereby aspirate the gas phase in the pre-cooled gas-liquid separator 10; In pipeline after venturi injector and the oil gas absorptive condenser; Oil gas temperature in the gas phase reduces, and owing to the absorption of ethanol, oil gas is liquid phase by gas phase conversion and is dissolved in the ethanol simultaneously; Low temperature circulation ethanol behind the absorption oil gas returns the ethanol surge tank in raw material oil gas/cold ethanol heat exchanger 7 with after the oil gas heat exchange; Proceed to absorb the process (the another kind of embodiment of the utility model is that raw material oil gas carries out gas-liquid separation with after raw material oil gas and the heat exchange of low temperature fixed gas, and low temperature fixed gas entering after-treatment device is further handled) of oil gas.The liquid phase oil product of being discharged by mixture gas-liquid separator 4 gets into ethanol petrol and is in harmonious proportion device 6, through with after an amount of gasoline mixes, can be used as the ethanol petrol sale.Discharge gas phase by mixture gas-liquid separator 4 and after cleaning equipment for waste organic gas 5 is further handled, enter atmosphere.
Further specify the technology contents and the effect of the utility model below through specific embodiment.
Certain gas station's buried tank produces NMHC 30% (by volume) in the oil gas, about 20 ℃ of temperature when receiving oil.According to flow process as shown in Figure 1, make absorbent with absolute ethyl alcohol.Main operating condition: absolute ethyl alcohol chilling temperature-50 ℃ produces vacuum-1400Pa in venturi injector.All the low temperature circulation ethanol of raw material oil gas and 4 discharges of mixture gas-liquid separator carries out the heat exchange precooling; Feedstock oil air cooling is temperature-4 ℃ but; After the entering of the oil gas after precooling gas-liquid separator 10 was isolated moisture, uncooled raw material oil gas is aspirated got into venturi injector 3.The part rich absorbent that mixture gas-liquid separator 4 is discharged enters ethanol petrol mediation device 6, adds an amount of gasoline product at this, can obtain 10% (quality) ethanol petrol.
After the utility model method was handled, oil gas recovery rate was 90% (quality).
Certain gas station produces NMHC 35% (by volume) in the oil gas to automobile fuel filler the time, about 20 ℃ of temperature.According to flow process as shown in Figure 2, make absorbent with absolute ethyl alcohol.Main operating condition: absolute ethyl alcohol chilling temperature-50 ℃ produces vacuum-1500Pa in venturi injector.Absolute ethyl alcohol chilling temperature-50 ℃.All raw material oil gas and mixture gas-liquid separator 4 fixed gas of discharging carries out the heat exchange precooling, and feedstock oil air cooling is temperature-4 ℃ but, and after the oil gas after the precooling got into gas-liquid separator 10 separation water outlets, uncooled raw material oil gas was aspirated the entering venturi injector.The part rich absorbent that mixture gas-liquid separator 4 is discharged enters ethanol petrol mediation device, adds an amount of gasoline product at this, can obtain 10% (quality) ethanol petrol, and all the other rich absorbents recycle.The low temperature fixed gas that mixture gas-liquid separator 4 is discharged enters after-treatment device 5 and enters atmosphere after treatment after heat exchange.
After the utility model method was handled, oil gas recovery rate was 90% (quality).
Claims (7)
1. an oil gas cryogenic condensation absorbs and produces the device of ethanol petrol; It is characterized in that the oil gas cryogenic condensation absorbs and the device of production ethanol petrol comprises: refrigeration unit, ethanol cycle pump, venturi injector, mixture gas-liquid separator, ethanol petrol dispenser, the pre-cooled heat exchanger of oil gas and pre-cooled oil gas gas-liquid separator; Refrigeration unit inlet with replenish absolute ethyl alcohol and circulation oily ethanol mixed pipe line communicates; The refrigeration unit outlet is communicated with the ethanol cycle pump; The ethanol cycle pump discharge is connected with venturi injector liquid phase inlet; The venturi injector outlet is connected with the mixture gas-liquid separator, and mixture gas-liquid separator gaseous phase outlet is communicated with cleaning equipment for waste organic gas, and the outlet of mixture gas-liquid separator liquid phase is connected with ethanol petrol dispenser and refrigeration unit inlet respectively; The raw material oil-gas pipeline is connected with the pre-cooled exchanger heat material inlet of oil gas; The pre-cooled heat exchanger cooling of oil gas back oil gas vent is connected with pre-cooled oil gas gas-liquid separator inlet, and pre-cooled oil gas gas-liquid separator gaseous phase outlet is connected with the venturi injector gas access.
2. according to the described device of claim 1, it is characterized in that: the absolute ethyl alcohol storage tank is set, and the absolute ethyl alcohol storage tank is connected with the refrigeration unit inlet.
3. according to the described device of claim 1, it is characterized in that: refrigeration unit is 0 ℃～-80 ℃ to the cryogenic temperature of working media.
4. want 1 described device according to right, it is characterized in that: refrigeration unit is-20 ℃～-60 ℃ to the cryogenic temperature of working media.
5. according to the described device of claim 1, it is characterized in that: raw material oil gas is cooled to-4～4 ℃ through heat exchanger.
6. according to claim 1 or 5 described devices, it is characterized in that: heat exchanger is selected from plate type heat exchanger, shell-and-tube heat exchanger or heat exchange of heat pipe.
7. according to the described device of claim 1, it is characterized in that: cleaning equipment for waste organic gas is selected from catalytic combustion system, heating power oxidation unit, heat-accumulation combustion device or adsorbent equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203930803U CN202289823U (en) | 2011-10-17 | 2011-10-17 | Device for condensing and absorbing oil and gas at low temperature and producing ethanol gasoline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203930803U CN202289823U (en) | 2011-10-17 | 2011-10-17 | Device for condensing and absorbing oil and gas at low temperature and producing ethanol gasoline |
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| Publication Number | Publication Date |
|---|---|
| CN202289823U true CN202289823U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203930803U Expired - Lifetime CN202289823U (en) | 2011-10-17 | 2011-10-17 | Device for condensing and absorbing oil and gas at low temperature and producing ethanol gasoline |
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| CN (1) | CN202289823U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109126180A (en) * | 2018-09-28 | 2019-01-04 | 上海峻岗环保科技有限公司 | A kind of system and its workflow that organic matter recycles |
| CN110523219A (en) * | 2019-09-10 | 2019-12-03 | 艾凡佳德(上海)环保科技有限公司 | A kind of processing system and its application method of the industrial tail gas containing ethylene glycol |
-
2011
- 2011-10-17 CN CN2011203930803U patent/CN202289823U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109126180A (en) * | 2018-09-28 | 2019-01-04 | 上海峻岗环保科技有限公司 | A kind of system and its workflow that organic matter recycles |
| CN110523219A (en) * | 2019-09-10 | 2019-12-03 | 艾凡佳德(上海)环保科技有限公司 | A kind of processing system and its application method of the industrial tail gas containing ethylene glycol |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
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| CX01 | Expiry of patent term |