Residue Upgrading by Hydroprocessing of Deasphalted Oil

DOI Web Site Web Site 27 References

Bibliographic Information

Other Title
  • 脱れき油の水素化精製による重質油アップグレーディング

Search this article

Abstract

<p>Heavy oil cracking in most Japanese refineries adopts the residue fluid catalytic cracking (RFCC) process. The sulfur content of low sulfur fuel oil (LSFO) must be reduced to below 0.5 wt% to comply with new International Maritime Organization (IMO) regulations. To achieve this, the residue hydrodesulfurization (RDS) unit must be operated under more severe conditions. In this study, an RDS catalyst system to treat deasphalted oil (DAO) from the solvent deasphalting (SDA) unit was developed. This system allows co-production of both RFCC feedstocks and LSFO from the vacuum residue (VR) fraction simultaneously and flexible refinery operation. VR has much amount of vanadium and nickel. The SDA process selectively reduces large molecules containing vanadium and nickel, both catalyst poisoning materials. Such metal compounds in DAO are easy to remove, but due to their reactivity, the catalysts deactivate faster than conventional atmospheric residue (AR). Therefore, we developed a new RDS catalyst system for DAO treatment. This new system can suppress metal deactivation in the RDS unit and reduces the amount of nitrogen in the products, which in turn leads to increased RFCC conversion.</p>

Journal

References(27)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top