Solvent migration in a paraffin deposit

Temporal changes in solvent content of deposits formed on a tube wall were measured for a binary system of hydrocarbons, nonadecylcylohexane and octane. Solvent content in the deposited nonadecylcyclohexane decreased over time, consistent with the phenomena of migration of included solvent in a temperature gradient. An understanding of inclusion migration in deposits can provide a framework for modeling the aging of paraffin deposits in crude oil pipelines.