The growing diesel fuel demand urged MOL Plc. to launch a conversion package (named Hydrocracking Project) in order to increase diesel fuel production through intensified distillation capacity and increased refinery conversion level.
The most prominent item of this project is the realization of a Hydrocracking unit producing gasoil from vacuum distillates. The technology enables different operational modes depending on the market need (diesel fuel or lube oil). Base oil production for lubes is based on Hydrocracking unit Unconverted Oil (UCO) which is dewaxed in the conventional Base Oil Production Line. Dewaxing is done in the Solvent Dewaxing units. The aim of the work was to reveal whether capacity limit emerges during processing 210 kt/year UCO in Solvent Dewaxing unit and if it does, what are the possibilities of ceasing it. Investigations have revealed that there is capacity limit during processing annual 210 kt UCO in Solvent Dewaxing unit but minor technological changes in present production scheme would end capacity limit.
Csurka Krisztina, Ruff József