Patent ID: 6869576
Filing Date: 2005-03-22
Classification: C10G

Abstract:
1. Apparatus for hydrotreating a hydrocarbon feedstock comprising: a hydrocarbon feedstock supply, a desulfurization reactor fed by said supply, at least one separate hydrotreatment reactor, a fractionation unit disposed between the desulfurization reactor and the at least one hydrotreatment reactor, said fractionation unit containing separation means comprising an internal partitioning structure defining two distinct injection zones in flow communication with a common upper vaporization zone, an evacuation line for withdrawal downstream of light fractions from the vaporization zone, said fractionation unit having separate lines for carrying respectively the effluents from the desulfurization reactor and the effluents from the at least one hydrotreatment reactor to the fractionation unit, with one of said lines carrying the effluents from the desulfurization reactor into one of said injection zones, and the other of said lines carrying the effluents from the at least one hydrotreatment reactor into the other of said injection zones, the fractionation unit having two different draw-off lines through which are removed, from the injection zones respectively, the liquid bottoms of the effluents of the desulfurization reactor that are passed on to the at least one hydrotreatment reactor and separately of the effluents from the at least one hydrotreatment reactor that are passed on downstream.