油气回收系统分段介绍

　　Segmented introduction of oil and gas recovery system

　　（1）卸油油气回收系统（一次回收）

　　(1) Unloading oil and gas recovery system (primary recovery)

　　定义：将汽油油罐车卸油时产生的油气回收至油罐车里的密闭油气回收系统。

　　Definition: A closed oil and gas recovery system that recovers the oil and gas generated during the unloading of gasoline tank trucks into the tank trucks.

　　通过卸油油气回收管线连接

　　Connect through unloading oil and gas recovery pipelines

　　①从油品卸车点埋地敷设一根油气回收主管线与加油站的所有汽油储油罐的气相管道连通，油气回收管线卸车侧安装截流阀、密封式快速接头和帽盖；

　　① Lay an oil and gas recovery main pipeline underground from the oil unloading point and connect it to the gas phase pipelines of all gasoline storage tanks at the gas station. Install a shut-off valve, sealed quick connector, and cap on the unloading side of the oil and gas recovery pipeline;

　　②汽油油罐内部卸车管安装防溢油阀。

　　② Install an anti overflow valve on the unloading pipe inside the gasoline tank.

　　③从其中一个汽油油罐出来一根通气管在地上部分汇总为两根通气管。一根安装球阀、顶部安装一个机械呼吸阀；一根安装球阀、顶部安装一个防雨型阻火器。

　　③ A vent pipe coming out of one of the gasoline tanks is combined into two vent pipes on the ground. Install a ball valve and a mechanical breathing valve on the top; Install a ball valve and a rainproof flame arrester on the top.

　　（2）加油油气回收系统（二次回收）

　　(2) Refueling oil and gas recovery system (secondary recovery)

　　定义：将给汽车油箱加汽油时产生的油气，通过密闭方式收集进入埋地油罐的系统（也称为二阶段油气回收）。

　　Definition: A system (also known as two-stage oil and gas recovery) that collects the oil and gas generated when adding gasoline to a car's fuel tank in a closed manner and enters a buried oil tank.

　　a）分散式回收系统

　　a) Distributed recycling system

　　分散式的真空泵一般分别设置于各台加油机内，通常采用涡轮叶片式真空泵连结一条与输油管平行的油气回收管线和地下储油罐连结。当油品输出 时电机带动涡轮叶片式真空泵产生真空，进而通过回收油枪达到回收车辆油箱内挥发油气的效果。

　　Distributed vacuum pumps are generally installed separately in each refueling machine, usually using turbine blade vacuum pumps to connect an oil and gas recovery pipeline parallel to the oil pipeline and an underground oil storage tank. When the oil is output, the motor drives the turbine blade vacuum pump to generate vacuum, which then recovers the volatile oil and gas in the vehicle's fuel tank through the oil recovery gun.

　　从各汽油加油机敷设加油油气回收埋地管线，并汇总为一根管线至低标号汽油储罐，与其气相连接。

　　Lay buried pipelines for refueling oil and gas recovery from various gasoline dispensers, and consolidate them into one pipeline to connect with low-grade gasoline storage tanks.

　　b）集中式回收系统

　　b) Centralized recycling system

　　集中式的真空泵设置于油气回收管与地下储油罐连接处，一般每个地下储油罐设置1台中央吸取式真空泵，从各汽油加油机敷设加油油气回收埋地管线，并汇总为一根管线经集中式真空泵至低标号汽油储罐，与其气相连接。

　　A centralized vacuum pump is installed at the connection between the oil and gas recovery pipe and the underground oil storage tank. Generally, each underground oil storage tank is equipped with one central suction vacuum pump. The buried pipeline for refueling oil and gas recovery is laid from each gasoline refueling machine and summarized into one pipeline, which is connected to the low-grade gasoline storage tank through the centralized vacuum pump and connected to its gas phase.

　　（3）油气排放处理装置（三次回收）

　　(3) Oil and gas emission treatment device (tertiary recovery)

　　定义：针对加油油气回收系统部分排放的油气，通过采用吸附、吸收、冷凝、膜分离等方法对这部分排放的油气进行回收处理的装置。

　　Definition: A device that uses adsorption, absorption, condensation, membrane separation, and other methods to recover and treat the partially discharged oil and gas from the refueling oil and gas recovery system.

　　油气回收装置（三次回收）的安装及相应的电缆敷设、控制器安装。油气回收装置（三次回收）入口管线与高标号汽油油罐气相连接，出口管线及凝液回流管线与低标号汽油储罐气相连接。

　　Installation of oil and gas recovery device (tertiary recovery) and corresponding cable laying, controller installation. The inlet pipeline of the oil and gas recovery device (tertiary recovery) is connected to the high-grade gasoline tank gas, and the outlet pipeline and condensate reflux pipeline are connected to the low-grade gasoline tank gas.

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