Development and Application of the CGP-2 Catalyst in the MIP-CGP Process

The research and development of the CGP-2 catalyst,which was used in the MIP-CGP process for reducing the olefin and sulfur contents of FCC naphtha and enhancing the 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.The CGP-2 catalyst possessed excellent hydrothermal stability to meet the requirements of the 2nd reaction zone of the MIP-CGP process.The commercial test of the said catalyst at the SINOPEC Cangzhou refinery showed that in comparison with the base case(using the CGP-1Z catalyst)the CGP-2 catalyst could reduce the sulfur content of FCC naphtha by 30.32%and increase the propylene yield along with good coke selectivity.Thus,the naphtha produced by the MIP-CGP process at the Cangzhou refinery call meet the newgasoline standard enforced in July 2005.