Patent ID: 8545705
Filing Date: 2013-10-01
Classification: B01J,C10G

Abstract:
1. A process for regenerating at least one drier for an apparatus for isomerizing a hydrocarbon stream rich in at least one hydrocarbon selected from the group consisting of at least one C4 hydrocarbon, at least one C5 hydrocarbon, at least one C6 hydrocarbon, and mixtures thereof, comprising: a) passing liquid phase regenerant through the at least one drier to desorb water from the at least one drier, resulting in at least one regenerated drier containing used liquid phase regenerant; b) forcing the used liquid phase regenerant from the at least one regenerated drier using a liquid phase fluid stream; and c) diluting the used liquid phase regenerant forced from the at least one regenerated drier at a location upstream of the at least one drier over a period of time with a fluid to minimize upsets in downstream operations wherein the diluting step comprises passing the used liquid phase regenerant though a fluid tapering device comprising a restriction orifice, a flow indicator, a pressure differential indicating controller, and a control valve.