Process for hydroconverting a heavy hydrocarbon chargestock

US6726833B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• Fushun Research Institute of Petroleum and Petrochemicals, SINOPEC CORP. · CN

Inventors

• Baoping Han · 东风镇, CN
• Lijing Jiang · 东风镇, CN
• Youliang Shi · 红钢城街道, CN
• Pai Peng · San Jose, US
• Mei Jin · 唐家房镇, CN
• Zhaoming Han · 东风镇, CN

Key dates

• Filing date: Jan 4, 2002
• Grant date: Apr 27, 2004
• Expiry date: Apr 6, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G47/26
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention discloses a process for hydroconverting a heavy hydrocarbon chargestock, wherein said chargestock oil is first contacted with a highly active homogeneous hydrogenation catalyst to effect the hydrogenation reaction so that macromolecular radicals of the residue (the precursor of coke) form as less as possible, thereby decreasing the output of coke in the hydrocracking of the residue; when the reaction proceeds to a certain extent, a solid powder is added to adsorb the macromolecular radicals of the residue formed during the reaction and lower their reaction activity, thereby preventing them from further condensing to coke and/or depositing due to polymerization. The synergetic action of the two sorts of substances makes it possible to produce substantively no coke or less coke during the hydrogenation of residue in a suspension bed and prolong the operation lifetime of the unit.