The Improvement of FCC Gasoline Aromatization for Olefins Reduction With Modified Nano-scale HZSM-5

Abstract

The aromatization and olefin-reduction catalyst M has been applied in commercial unit for HDS desulfurization and olefin-reduction process with the heavy fraction of Fluid Catalytic Cracking gasoline. To solve the problems at higher reaction temperature, a series of modification procedures are taken on catalyst M. The characterization of four types of nano-scale HZMS-5 is conducted by XRD, Py-FT-IR, TEM, and BET analysis for the catalyst M modification. A modified catalyst M-II is successfully developed. Compared with catalyst M, the aromatics increases more than 1.3% and RON is 0.7 higher at the equivalent level of olefin reduction.

Keywords:

• Nano-scale HZSM-5
• catalytic cracking
• heavy gasoline
• olefin-reduction
• aromatization
• RON