Abstract:

A series of technologies (LNE-1, LNE-2 and LNE-3) for FCC light naphtha etherification, jointly developed by Lanzhou Petrochemical Research Center of PetroChina and other institutes, were applied in refineries that produce ethanol gasoline or non-ethanol gasoline. The results show that the tertiary amylene conversions of the LNE-1 and LNE-2 technology are 72.10% and 91.41%, respectively and the expected tertiary amylene conversion of LNE-3 process is more than 93%. The research octane number (RON) of FCC light gasoline is improved by 2.2 units after etherification by LNE-2 technology and the product can be used as a non-ethanol gasoline blending component; while for ethanol gasoline blending component production, the RON of etherified product by LNE-3 technology reaches above 100.

Key words: FCC, light naphtha, etherification, industrial application