关键词: 催化剂, 氢转移, 烯烃, 硫含量, 汽油料

Abstract: The research and development of CGP-2 catalyst, a catalyst for MIP-CGP process to reduce the olefin and sulfur contents of FCC naphtha and to enhance propylene yield, were introduced. A specific type of metal compound was added into the matrix to provide active centers for reactions including catalytic conversion and selective adsorption of sulfur containing compounds, to take place. CGP-2 catalyst possessed excellent hydrothermal stability to meet the requirements of the 2nd reaction zone of MIP-CGP process. The Commercial trial of SINOPEC Cangzhou Refinery showed that as compared with base case (using CGP-1Z catalyst), when using CGP-2 catalyst the sulfur content of FCC naphtha was reduced by 30.32%, propylene yield was further increased, as well as good coke selectivity. Thus, the naphtha from MIP-CGP process in Cangzhou refinery can meet the specifications of new gasoline standard implemented in July 2005.

Key words: catalyst, hydrogen transfer, olefin, sulphurous content, gasoline stock