Abstract
This paper reports the data obtained in an attempt to utilize the waste sludge of the Cochin Refineries Ltd., Kochi, India. About 17 % of a lighter oil fraction can be recovered from this sludge and the characteristics of the lighter oil are such that it can be used as diesel fuel by blending with other appropriate refinery streams. An attempt was also made to convert the residue left after the removal of the lighter oils into different grades of industrial bitumen. This residue, obtained after vacuum distillation, was heat treated without and with different catalysts. The change in softening point:penetration ratio when heat treated without any catalyst was not enough to meet the specifications of any industrial bitumen.
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