The extracted oil output was increased after revamping aromatics extraction unit, but the raffinate oil system was not modified along with.

This paper presents the technology for producing cyclohexane from aromatic hydrocarbon raffinate oil which is a mid-byproduct in aromatic hydrocarbon plant.

Raffinate loses the emulsifying ability and low interfacial tension property, so the acidic components in heavy oil are the major active component for emulsification of basic water.