关键词: 油浆, 萃取, 操作条件

Abstract: A new type of solvent was used to extract and separate FCC slurry to saturated hydrocarbons and aromatic hydrocarbons. Three kinds of FCC slurries from various crude oils were involved including naphthenic, intermediate and paraffinic base. The solvent performance, extracting conditions, the properties of extract and remainder, and the application of these two streams were investigated. Results showed that said solvent could effectively separate the three kinds of FCC slurry, yet the extraction conditions and product yields were a bit varied. The obtained aromatic hydrocarbons stream was cut into three fractions for the use of rubber softener, rubber filler and asphalt blending component. The qualities of rubber softener and rubber filler from naphthenic and intermediate FCC slurry could meet the requirements of the relative product standards; the products from paraffinic FCC slurry still needed to be improved. The solid particles in the FCC slurry were transferred into the saturated hydrocarbons stream, and said stream could be used as FCC feedstock. Furthermore, the saturated hydrocarbons obtained from paraffinic base slurry could be used as feedstock of lubricant and wax.

Key words: slurry, extraction, operating condition