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Gas station vapor recovery refers to the process of collecting the volatile gasoline vapors that are generated during the loading and unloading of gasoline and while refueling vehicles. Through one or a combination of methods such as absorption, adsorption, or condensation, this process either reduces the pollution caused by these vapors or converts them from a gaseous state to a liquid state, allowing them to be reused as gasoline. So, how is the oil vapor recovery device used during oil unloading? The oil unloading oil vapor recovery device generally refers to the device used for recovering oil vapor from tank trucks. The function of the oil and gas recovery system in tank trucks is to achieve complete gas recovery during the loading and unloading process, thereby preventing oil and gas from being released into the air. That is, the oil transfer pipes and vapor recovery pipes between the oil tanker and the oil storage tank form a sealed vapor recovery pipeline. While the tanker unloads oil through the unloading pipeline, the oil and gas in the gas station’s tanks return to the tanker via the return pipeline. The tank truck transports the oil and gas back to the oil depot for processing, thereby achieving oil and gas recovery. When oil is introduced, fluctuations in the oil level can increase the evaporation and leakage of oil and gas; therefore, the oil injection pipe must extend below the oil level to minimize disturbances in it. The opening of the oil and gas recovery pipe is equipped with special devices for opening it; only when the oil and gas recovery pipeline of the tank truck is properly connected to the oil tank does the recovery port open, while the exhaust pipe closes, allowing the oil and gas in the tank to be completely returned to the tank truck through the recovery port. The specific steps are as follows: 1. First, connect the oil unloading hose and the oil vapor recovery hose. Then, open the oil vapor recovery valve on the tank truck as well as the oil vapor recovery valve at the oil unloading port, and subsequently open the oil unloading valve on the tank truck to unload the oil. 2. Keep the valve at the lower end of the vent pipe of the flame arrester (cap) in a closed position. 3. Keep the valve at the lower end of the vent pipe of the mechanical breathing valve (PV valve) in the open position. 4. At the end of unloading oil, first close the unloading valve of the tank truck, then close the vapor recovery valve of the tank truck and the vapor recovery valve at the unloading port, and finally remove the vapor recovery hose. The above is an introduction to how to use the oil and gas recovery device during oil unloading. If you have any other questions, feel free to contact us! Article title: How to Use the Oil and Gas Recovery Device During Oil Unloading?