Patent ID: 6165368
Filing Date: 2000-12-26
Classification: C07C

Abstract:
A method for controlling the deposition of polynuclear aromatic compounds on the surfaces of equipment in a processing train used to process a product stream obtained from the dehydrogenation of aliphatic hydrocarbons having from 2 to 5 carbon atoms, comprising:introducing into said processing train during processing of said product stream an amount of a liquid solvent sufficient to control deposition of said polynuclear aromatic compounds on said surfaces, said liquid solvent having at least one hydroxyl group and a boiling point within the range of from 150.degree. C. to 430.degree. C., and being non-reactive with the desired components of the dehydrogenated product stream;passing said solvent through at least a portion of said processing train; andrecovering said solvent from said product stream to minimize carryover of said solvent into downstream processes.