Patent ID: 7247235
Filing Date: 2007-07-24
Classification: C10G

Abstract:
1. A process for the hydrogenation of a petroleum fraction which comprises: a) co-current contacting the petroleum fraction in a first hydrotreating unit with a first hydrogen stream under hydrogenation reaction conditions to provide a partially treated first effluent containing a liquid component and a first vapor component; b) cooling the first effluent in a first heat exchange step; c) removing the first vapor component from the cooled first effluent in at least one liquid-vapor separation unit to provide a separation unit effluent containing substantially only liquid component; d) heating the separation unit effluent in a second heat exchange step to provide a heated liquid component; e) introducing the heated liquid component of step (d) into a second hydrotreating unit, f) combining the entire treated overhead effluent with the treated bottom effluent to provide a combined treated effluent; and g) removing a second vapor component from the combined effluent of the second hydrotreating unit to provide a product stream.