Refining process for removing arene-including impurities from solvent oil
The solvent oil which is composed of C3～C10 fraction and come from light oil of natural gas process and light oil by-products of refinery is treated by refining processes of rectify and hydrofining (under temperate conditions). The high quality solvent oil of different grades in concordance with the hygiene standards is produced by removing the impurities such as arene, unsaturated hydrocarbons, organic sulfide, chlorine and nitrogen, etc, and decreasing the content of impurities to 1×10~(-6), therefore the accessional value of products of refinery and gas plant is increased.