November 2016

Process Engineering and Optimization

Use a mixed-solvent process to boost lube base oil yields and profitability

Through research and development (R&D), the commercial application of a mixed-solvent (MS) approach using a mixture of different co-solvents resulted in higher lube raffinate yields without affecting the lube oil quality.

Through research and development (R&D), the commercial application of a mixed-solvent (MS) approach using a mixture of different co-solvents resulted in higher lube raffinate yields without affecting the lube oil quality. Initial lab-scale extraction experiments were carried out with various vacuum distillates, such as 150 neutral (150 N), 500 neutral (500 N) and deasphalted oil (DAO) obtained from Hindustan Petroleum Corp. Ltd.’s (HPCL’s) Mumbai refinery vacuum distillation unit (VDU). These vacuum distillates were used as feedstock to screen the different solvent systems. Lab-scale experiments were carried out at different temperatures (ranging from 323.15 K–373.15 K), different solve

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