CN102295118A - Circulating type oil-gas vacuum adsorption and recovery system comprising crude-oil storage tank - Google Patents
Circulating type oil-gas vacuum adsorption and recovery system comprising crude-oil storage tank Download PDFInfo
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- CN102295118A CN102295118A CN201110216981XA CN201110216981A CN102295118A CN 102295118 A CN102295118 A CN 102295118A CN 201110216981X A CN201110216981X A CN 201110216981XA CN 201110216981 A CN201110216981 A CN 201110216981A CN 102295118 A CN102295118 A CN 102295118A
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Abstract
The invention provides a circulating type oil-gas vacuum adsorption and recovery system comprising a crude-oil storage tank, comprising the crude-oil storage tank, a vacuum desulfurization device, an adsorption tank, a vacuum pump, an absorbent treating device and an absorption tower, wherein the absorbent treating device treats crude oil pumped from the crude-oil storage tank into lean gasoline; volatile oil gas of the crude-oil storage tank enters the vacuum desulfurization device and then enters the adsorption tank for adsorption and recovery after desorption and desulfurization; standard air is exhausted into atmosphere from the upper end of the adsorption tank, and nonstandard tail gas reenters the adsorption tank for circulating adsorption and recovery; the vacuum pump is used for carrying out vacuum desorption and regeneration on the adsorption tank with saturated adsorption; and desorbed high-concentration oil gas enters the absorption tower, and is absorbed by the lean gasoline body from the absorbent treating device, and the rich gasoline after absorption returns to the crude-oil storage tank. The circulating type oil-gas vacuum adsorption and recovery system is convenient and simple, volatile oil gas is absorbed and recovered by fully utilizing the self characteristic of the crude oil, additional equipment and resources do not need to be added, and the secondary pollution is not caused as well.
Description
Technical field
The present invention relates to a kind of oil gas absorption recovery system, be specifically related to a kind of crude oil storage tank oil gas absorption recovery system.
Background technology
Crude oil is from exploiting refinery processing, and finished oil consumes to the end user from the output of refinery, will experience some storages, handling process usually.In these processes, because the factor affecting such as gas-liquid phase volume variation of temperature, air pressure, splendid attire oil product container, therefore some oil gas can volatilize and enter atmosphere, causes the loss of oil gas.From the angle analysis that oil gas reclaims, oil and gas loss can be divided into three parts substantially, and the one, the oil gas breather loss of storage tank part mainly concentrates on crude oil transhipment station, refinery, oil depot etc.; The 2nd, the oil and gas loss that transportation means loading and unloading operation processes such as train, automobile, steamer cause; The 3rd, the oil and gas loss of filling station is made of to petrol service station emptying and oil gun oiling two parts oil and gas loss tank car.
The living environment of the direct harm humans of evaporation of oil product.Because the clean cargo major part belongs to the volatility flammable and explosive substance, easily assemble, with heavy gathering among depression or pipe trench behind the air formation explosive mixture, meet fire and very easily blast or fire accident, cause the heavy losses of life and property.Because oil gas explosive limits wide ranges, the oil gas range of scatter is wide, and the fire explosion that causes thus happens occasionally.Particularly in the oil tank under air-tight state, oil depot, oil carrier storehouse and the tank car, the easier accident of blasting.Be discharged into the oil gas molecular contamination environment in the atmosphere, both produced Los Angelos smog, damage the ozone layer again.
The oil gas loss of storage and transport process causes the waste of valuable oil resources.According to domestic and international research for many years, in the entrucking process, average hydrocarbon-containifirst is 1.3kg/m3 in the gas in the exhaust to atmosphere.2005, the gasoline consumption of China was more than 5,000 ten thousand tons, nearly 900,000 tons of gasoline volatilization loss amount, 5,000,000,000 yuan of direct economic losses.
Just entrucking, shipment process evaporation loss oil gas are carried out the research of recovery technology abroad as far back as the sixties, the seventies, the country of advanced technology extensively adopts the oil gas recovery technology as the U.S., Japan, the Western European countries in the world, has solved the problem of entrucking, shipment process oil loss.In the U.S., not only refinery and oil depot have been taked the oil gas recovery measure, and all petrol service stations have all set up airtight emptying and fuel loading system, make petrol service station not have exhaust of oil substantially.The refinery of European Union and oil depot have generally been taked the oil gas recovery measure, and the oil vapour pollution improvement work of petrol service station is also begun, and the petrol service station of European Union has all been taked the oil gas recovery measure before 2005.
At home, it also is a new industry that oil gas reclaims, and practical application is few.Along with the progressively enhancing of safety, environmental protection, awareness of saving energy, agenda has been mentioned in the domestic widespread use that oil gas is reclaimed.Also lacking aspect the oil gas recovery of crude oil petrol storage tank conveniently succinctly, need not to increase extras and resource, can not cause the gas recovery system for oil of secondary pollution.
Summary of the invention:
In view of this, in order to overcome the deficiencies in the prior art, the invention provides crude oil storage tank oil gas vacuum suction recovery system, this system is convenient succinct, makes full use of the crude oil self-characteristic vaporizing oil-gas is absorbed recovery, need not to increase extra equipment and resource.Can not produce new material yet, cause secondary pollution.
A kind of circulating crude oil storage tank oil gas vacuum suction recovery system provided by the invention comprises: crude oil storage tank, vacuum desulfurizer, absorption canister, vacuum pump C, absorbent processing equipment and absorption tower,
The crude Treatment that described absorbent processing equipment will extract from crude oil storage tank is poor gasoline; Described crude oil storage tank vaporizing oil-gas enters absorption canister absorption recovery after entering vacuum desulfurizer desorb desulfurization, and air up to standard is from absorption canister upper end exhaust to atmosphere, and below standard tail gas reenters absorption canister circulation absorption and reclaims; Carry out vacuum desorption regeneration with vacuum pump C to adsorbing saturated absorption canister; The high-concentration oil vapor that desorbs enters the absorption tower, is absorbed the poor gasoline body that the agent processing equipment sends and absorbs, and the rich gasoline after the absorption is returned former petrol storage tank.
The present invention is by being processed into crude oil self in the poor gasoline with absorbent effect, vaporizing oil-gas absorption is reclaimed, successful invention a kind of crude oil storage tank oil gas vacuum suction recovery system, this system is convenient succinct, make full use of the crude oil self-characteristic, need not to increase extra equipment and resource, also can not produce new material, cause secondary pollution.Simultaneously, crude oil storage tank oil gas is reclaimed in the sustainable circulation absorption of this absorption recovery system.
Further, described vacuum desulfurizer comprises vacuum pump A and digester, and described absorbent processing equipment comprises temperature booster, cooling tower and vacuum pump B,
The crude oil heater via heating that described absorbent processing equipment will extract from crude oil storage tank reduces crude oil viscosity, cooling tower condensation gas-liquid separation and vacuum pump B desorb processing and obtains poor gasoline; Described crude oil storage tank vaporizing oil-gas enters absorption canister from absorption canister lower end air inlet pipe after collecting pipe enters vacuum pump A desorb and digester desulfurization, air up to standard is from absorption canister upper end exhaust to atmosphere, and below standard tail gas feeds and reenters absorption canister circulation absorption recovery in the absorption canister air inlet pipe; Carry out vacuum desorption regeneration with vacuum pump C to adsorbing saturated absorption canister; The high-concentration oil vapor that desorbs enters the absorption tower, and the poor gasoline body of being sent here from the absorbent processing equipment by oil feed pump absorbs, and the rich gasoline after the absorption is returned former petrol storage tank by dump pump.
Said vacuum pump A, B, C only are for the ease of statement in the file, distinguish by position of being laid separately and effect, there is no the differentiation of concrete structure.
Further, described absorption canister is made up of at least two identical absorption canisters of capacity,
When absorption canister I adsorbs when saturated, the oil gas air inlet pipe switches to the absorption canister II of desorption and regeneration, adsorbing saturated absorption canister I simultaneously switches to be connected and to start vacuum pump C with vacuum pump C and carries out desorption and regeneration, every absorption canister desorption time is less than or equal to oil gas absorption recovery time, makes oil gas absorption reclaim lasting circulation and carries out.
Further, described vacuum desulfurizer is alternately used by turns by at least two identical vacuum desulfurizers of capacity.
Further, the temperature booster of described absorbent processing equipment adopts automatic temperature control control temperature, guarantees that crude oil is in optimal range of temperatures; The air inlet pipe that oil gas enters absorption canister after described desulfurization is provided with high precision gas concentration analyser and flow counter, count and enter every hydrocarbon content in the absorption canister oil gas, when reaching absorption canister designing treatment amount, the oil gas air inlet pipe switches to another absorption canister of desorption and regeneration.
Further, described switching and vacuum pump start by automatic process and circuit control.
Further, described vacuum pump C is a dry vacuum pump, and described dry vacuum pump adopts frequency-variable controller control, and adopts the gasoline cooling, and cooling gasoline enters the vacuum pump cooling chamber cooling pump housing from oil inlet branch by a filter.
Further, described dry vacuum pump oil coolant is imported and exported on the pipeline and is equipped with temperature sensor and flow sensor, monitors vacuum pump oil coolant temperature and vacuum pump oil coolant flow in real time.
Further, be provided with temperature sensor, monitor the absorption canister air outlet temperature in real time at described absorption canister freeing pipe.
Further, be provided with blow off valve branch road and return-air valve branch road at described absorption canister freeing pipe, described blow off valve branch road is introduced air blowing charcoal bed in the absorption canister regeneration later stage; Described return-air valve branch road is got back to normal pressure from vacuum state after absorption canister regeneration is finished.
Beneficial effect of the present invention is:
1. crude oil vapor is reclaimed in the sustainable circulation of circulating crude oil storage tank oil gas vacuum suction recovery system of the present invention, is convenient to realize not having the full automatic control of staff on duty, is convenient to realize remote monitor and control.
2. adopt crude oil to preheat, gas-liquid separation and vacuum desorption processing mode obtain the needed absorbent of crude oil vaporizing oil-gas after condensation again, convenient succinct, make full use of the crude oil self-characteristic vaporizing oil-gas is absorbed recovery, need not to increase extra equipment and resource.Can not produce new material yet, cause secondary pollution.
3. adopt absorption method to reclaim oil gas, adsorbent and oil gas contact are long-pending big, and organic efficiency reaches more than 99%, below the exhaust of oil mass concentration 10mg/L, satisfies the requirement of GB GB20950-2007 " oil storage atmosphere pollutants emission standards " fully.
4. adopt the dry vacuum pump desorption technique.Dry vacuum pump is compared with traditional liquid-ring vacuum pump, has that desorption rate is fast, treatment effeciency is high, characteristic of low energy consumption; Reduce by 1 circulation pump that adds oil coolant, directly cut down the consumption of energy 30%; Need not sealing fluid, eliminated the corrosion of gas and liquid, stopped the possibility of active carbon and oil product secondary pollution; Particular design makes the equipment operation temperature very low, greatly reduces energy consumption, has improved reliability; Eliminated fragile part, avoided the generation of spark and static, safety is good.
5. the pipe joint interface is few, simple installation, and use cost is low, and maintenance cost is low, the gain on investments height.
6. monitor vacuum pump oil-feed gas concentration in real time, vacuum pump oil coolant flow and temperature, and absorption tower air outlet temperature guarantee the safe handling of vacuum pump and absorption canister.
Other advantages of the present invention, target, to set forth in the following description to a certain extent with feature, and to a certain extent,, perhaps can obtain instruction from the practice of the present invention based on being conspicuous to those skilled in the art to investigating hereinafter.Target of the present invention and other advantages can realize and obtain by specifically noted structure in following specification sheets and the accompanying drawing.
Description of drawings
Fig. 1 is a crude oil storage tank oil gas vacuum suction recovery method flow scheme of the present invention
Wherein, 1-oil feed pump A, 2-temperature booster, 3-cooling tower, 4-oil feed pump B, 5-vacuum pump A, 6-vacuum pump B, 7-digester I, 8-digester II, 9-absorption canister I, 10-absorption canister II, 11-vacuum pump C, 12-absorption tower, 13-dump pump, 14-crude oil storage tank.
The specific embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.
Circulating crude oil storage tank oil gas vacuum suction recovery system of the present invention, comprise: crude oil storage tank 14, vacuum desulfurizer 5,7,8, absorption canister 9,10, vacuum pump C 11, absorbent processing equipment 2,3,6 and absorption tower 12, the vacuum desulfurizer comprises vacuum pump A and digester, described absorbent processing equipment comprises temperature booster 2, cooling tower 3 and vacuum pump B6, the crude oil that stores in the crude oil storage tank 14 is under the effect of oil feed pump A 1, through the oil supply line temperature booster 2 of flowing through, reduced the crude oil viscosity after being heated by temperature booster 2 appropriateness, enter in the cooling tower 3, gas-liquid separation after the condensation in cooling tower 3, after the gaseous state lighter hydrocarbons process vacuum pump A 5 desorbs compression, directly in collecting pipe enters absorption canister I 9 or absorption canister II 10, carry out absorption regeneration, the liquid crude of separating then is processed to be and is suitable as oil-poor that the oil gas absorbent uses, deposit in the cooling tower, flow in the absorption tower 12 through oil feed pump B 4 again.
The oil gas that volatilizes in the crude oil storage tank 14 is through collector tubing, compression desorb through vacuum pump B 6, enter digester I 7 or digester II 8, carrying out desulfurization handles, digester I 7 and digester II 8 be operation by turns alternately, and the using and the reserved guarantee that at utmost the oil gas desulfurization reliably carries out, oil gas after the desulfurization finally enters in absorption canister I 9 or the absorption canister II 10 through collecting pipe, and oil gas carries out absorption regeneration.
Absorption canister I 9 at first begins absorption, and when absorption canister I 9 absorption were saturated, system was transformed into clean idle absorption canister II 10 automatically and adsorbs oil gas, absorption canister I 9 beginning desorption and regenerations; With should absorption canister II 10 absorption when saturated, absorption canister I 9 has finished desorption and regeneration, oil gas enters in the absorption canister I7 and adsorbs recovery, absorption canister II 10 stops oil-feed gas, and is connected and starts vacuum pump C 11 with vacuum pump C 11 and carry out desorption and regeneration.So circulation, the sustainable circulation absorption of oil gas is reclaimed, and the air up to standard that is not adsorbed is from absorption canister I 9 and absorption canister II 10 upper end vent pipe exhaust to atmospheres, and below standard tail gas reenters absorption canister circulation absorption and reclaims.
Absorption fat oil gas is under the vacuum desorption effect of vacuum pump C 11 in absorption canister I 9 or the absorption canister II 10, enter in the absorption tower 12 through collecting pipe, absorbed through pretreated former oil solvent, the crude oil after the absorption is returned in the original crude oil storage tank 14 again through dump pump 13.
Although by some preferred embodiment with reference to invention, invention is described, but those of ordinary skill in the art should be appreciated that and can make various changes to it in the form and details, and the spirit and scope of the present invention that do not depart from appended claims and limited.
Claims (10)
1. a circulating crude oil storage tank oil gas vacuum suction recovery system is characterized in that, comprising: crude oil storage tank, vacuum desulfurizer, absorption canister, vacuum pump C, absorbent processing equipment and absorption tower,
The crude Treatment that described absorbent processing equipment will extract from crude oil storage tank is poor gasoline; Described crude oil storage tank vaporizing oil-gas enters absorption canister absorption recovery after entering vacuum desulfurizer desorb desulfurization, and air up to standard is from absorption canister upper end exhaust to atmosphere, and below standard tail gas reenters absorption canister circulation absorption and reclaims; Carry out vacuum desorption regeneration with vacuum pump C to adsorbing saturated absorption canister; The high-concentration oil vapor that desorbs enters the absorption tower, is absorbed the poor gasoline body that the agent processing equipment sends and absorbs, and the rich gasoline after the absorption is returned former petrol storage tank.
2. according to the described circulating crude oil storage tank oil gas vacuum suction recovery system of claim 1, it is characterized in that described vacuum desulfurizer comprises vacuum pump A and digester, described absorbent processing equipment comprises temperature booster, cooling tower and vacuum pump B,
The crude oil heater via heating that described absorbent processing equipment will extract from crude oil storage tank reduces crude oil viscosity, cooling tower condensation gas-liquid separation and vacuum pump B desorb processing and obtains poor gasoline; Described crude oil storage tank vaporizing oil-gas enters absorption canister from absorption canister lower end air inlet pipe after collecting pipe enters vacuum pump A desorb and digester desulfurization, air up to standard is from absorption canister upper end exhaust to atmosphere, and below standard tail gas feeds and reenters absorption canister circulation absorption recovery in the absorption canister air inlet pipe; Carry out vacuum desorption regeneration with vacuum pump C to adsorbing saturated absorption canister; The high-concentration oil vapor that desorbs enters the absorption tower, and the poor gasoline body of being sent here from the absorbent processing equipment by oil feed pump absorbs, and the rich gasoline after the absorption is returned former petrol storage tank by dump pump.
3. according to the described circulating crude oil storage tank oil gas vacuum suction recovery system of claim 1, it is characterized in that described absorption canister is made up of at least two identical absorption canisters of capacity,
When absorption canister I adsorbs when saturated, the oil gas air inlet pipe switches to the absorption canister II of desorption and regeneration, adsorbs saturated absorption canister I simultaneously and switches to be connected and to start vacuum pump C with vacuum pump C and carry out desorption and regeneration.
4. according to the described circulating crude oil storage tank oil gas vacuum suction recovery system of claim 1, it is characterized in that described vacuum desulfurizer is alternately used by turns by at least two identical vacuum desulfurizers of capacity.
5. according to the described circulating crude oil storage tank oil gas vacuum suction recovery system of claim 1, it is characterized in that, the temperature booster of described absorbent processing equipment adopts automatic temperature control control temperature, and the air inlet pipe that oil gas enters absorption canister after described desulfurization is provided with high precision gas concentration analyser and flow counter.
6. according to the described circulating crude oil storage tank oil gas vacuum suction recovery system of claim 1, it is characterized in that described switching and vacuum pump start by automatic process and circuit control.
7. according to the described circulating crude oil storage tank oil gas vacuum suction recovery system of claim 1, it is characterized in that, described vacuum pump C is a dry vacuum pump, described dry vacuum pump adopts frequency-variable controller control, and adopting the gasoline cooling, cooling gasoline enters the vacuum pump cooling chamber cooling pump housing from oil inlet branch by a filter.
8. according to the described circulating crude oil storage tank oil gas vacuum suction recovery system of claim 1, it is characterized in that, described dry vacuum pump oil coolant is imported and exported pipeline and is provided with temperature sensor and flow sensor, monitors vacuum pump oil coolant temperature and vacuum pump oil coolant flow in real time.
9. according to the described circulating crude oil storage tank oil gas vacuum suction recovery system of claim 1, it is characterized in that, be provided with temperature sensor, monitor the absorption canister air outlet temperature in real time at described absorption canister freeing pipe.
10. according to the described circulating crude oil storage tank oil gas vacuum suction recovery system of claim 1, it is characterized in that, be provided with blow off valve branch road and return-air valve branch road at described absorption canister freeing pipe, described blow off valve branch road is introduced air blowing charcoal bed in the absorption canister regeneration later stage; Described return-air valve branch road is got back to normal pressure from vacuum state after absorption canister regeneration is finished.
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| CN 201110216981 CN102295118B (en) | 2011-07-29 | 2011-07-29 | Circulating type oil-gas vacuum adsorption and recovery system comprising crude-oil storage tank |
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| CN 201110216981 CN102295118B (en) | 2011-07-29 | 2011-07-29 | Circulating type oil-gas vacuum adsorption and recovery system comprising crude-oil storage tank |
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Cited By (6)
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| CN104096379A (en) * | 2014-07-11 | 2014-10-15 | 海湾环境科技（北京）股份有限公司 | High-sulfur crude oil gas recovery system for docks |
| CN104096448A (en) * | 2014-07-11 | 2014-10-15 | 海湾环境科技（北京）股份有限公司 | Oil gas circulating recovery device |
| CN104815524A (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 chemicals oil gas or mixed oil gas of chemicals and oil product |
| CN104896875A (en) * | 2015-06-04 | 2015-09-09 | 广东申菱空调设备有限公司 | Oil steam recovery device and automatic heat-insulating control method thereof |
| CN105413384A (en) * | 2015-12-24 | 2016-03-23 | 海湾环境科技（北京）股份有限公司 | Organic waste gas recycling treatment system and organic waste gas recycling treatment method |
| CN109847398A (en) * | 2019-03-21 | 2019-06-07 | 成都华气厚普机电设备股份有限公司 | A kind of liquid nitrogen spraying device for recovering oil and gas and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104096379A (en) * | 2014-07-11 | 2014-10-15 | 海湾环境科技（北京）股份有限公司 | High-sulfur crude oil gas recovery system for docks |
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| CN105413384A (en) * | 2015-12-24 | 2016-03-23 | 海湾环境科技（北京）股份有限公司 | Organic waste gas recycling treatment system and organic waste gas recycling treatment method |
| CN105413384B (en) * | 2015-12-24 | 2018-10-02 | 海湾环境科技（北京）股份有限公司 | A kind of organic exhaust gas recovery and processing system and method |
| CN109847398A (en) * | 2019-03-21 | 2019-06-07 | 成都华气厚普机电设备股份有限公司 | A kind of liquid nitrogen spraying device for recovering oil and gas and method |
| CN109847398B (en) * | 2019-03-21 | 2023-08-29 | 厚普清洁能源(集团)股份有限公司 | Liquid nitrogen spraying oil gas recovery device and method |
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