LARGE-SCALE COMMERCIAL APPLICATION OF FLEXIBLE SOLVENT DEASPHALTING (RFSD) TECHNOLOGY

Abstract

Abstract: Based on the deep understanding of the composition, structure and liquid-liquid extraction theory of residue, SINOPEC Research Institute of Petroluem Processing Co., Ltd. (RIPP) has studied the dissolution and mass transfer characteristics of heavy oil in different solvent systems, the RIPP flexible solvent deasphalting (RFSD) technology was developed. The industrial operation data of a 1.6 Mt/a solvent deasphalting unit in a refinery showed that a two-stage process was adopted with vacuum resid with carbon residue of 13.48% as raw material and butane as solvent, and a light deasphalted oil (LDAO）with a yield of 35.58%, carbon residue value of 2.85% and mass fraction of metal（Ni+V）of 2.42 μg/g could be obtained. The LDAO could be used as raw material for deep catalytic cracking and BS bright oil base oil. The operation energy consumption of the unit was 943.0 MJ/t.

Key words: residue, solvent deasphalting, deasphalted oil, flexible solvent deasphalting technology

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LARGE-SCALE COMMERCIAL APPLICATION OF FLEXIBLE SOLVENT DEASPHALTING (RFSD) TECHNOLOGY

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