Vapor recovery is the process of recovering the vapors of gasoline or other fuels, so that they do not escape into the atmosphere. 

Vapor recovery units are also becoming commonly used in the oil and gas industry as a means of recovering sour gas vapor and making it a usable
and profitable product, whereas vapors generated in oil storage tank were usually incinerated in flare in the past. 

Hanwha Power System provide gas compressors for VRU with strictly selected materials and seal technology to handle the highly corrosive gas including hydrogen sulfide.