Views:1 Author:autower Publish Time: 2019-08-28 Origin:http://www.autower.cn/
One recycling system:
A primary recovery system is the unloading oil and gas recovery system.The State Environmental Protection Administration's“Gas Pollutant Emission Standards for Gas Stations”is defined as“the system that collects oil and gas generated when a tanker is unloaded from gasoline,and collects it into a tank of a tank through a closed method.”
One recycling is for the transformation of tank cars.Take a closed measure and connect the breathing valve on the tank of the gas station with the tank car with a hose to form a return line.When the tanker unloads oil through the unloading line,the oil in the tank of the gas station returns to the tanker through the return line.Reach the purpose of oil and gas recovery.The tanker brings the oil and gas back to the oil depot for processing.However,the existing tank trucks basically have the problem of not being sealed,and generally leak on the way back to the oil depot;and most of the oil depots are not equipped with oil and gas recovery processing devices,and are generally discharged in vain.Based on the current situation,it is basically impossible to achieve the effect of energy saving and emission reduction.
Secondary recovery system:
Secondary recovery system is refueling oil and gas recovery system.The State Environmental Protection Administration's"Gas Pollutant Emission Standards for Gas Stations"is defined as"the system that will be used to add oil and gas to gasoline tanks and collect the oil and gas into the buried oil tanks in a closed manner".The second recovery is for the refueling of fuel dispensers.Using a refueling gun with a return air pipe,while refueling the car,a vacuum pump is used to pump the oil and gas in the car fuel tank back to the gas station tank.The Gas Station Air Pollutant Emission Standard stipulates that the gas-liquid ratio of the secondary recovery system is 1~1.2:1.Some oil guns are not closed and will pump a large amount of air into the tank.This part of the excess gas requires three oil and gas recovery systems to process.
Three recovery systems:
The three-time recovery system refers to the oil and gas discharge treatment device.It deals with oil and gas with a refueling function that collects and discharges oil from the exhaust line when the gas-liquid ratio is greater than 1,and oil and gas that is discharged when the buried oil tank generates positive pressure with changes in atmospheric pressure and temperature.Three recovery methods generally include adsorption,absorption,condensation,and membrane separation.
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