Patent ID: 6667348
Filing Date: 2003-12-23
Classification: B01J,C10G

Abstract:
A hydrogenation process wherein a gas is injected into a reactor through a gas injector, wherein the improvement comprises:passing the gas through a pressure reducing zone having a first gas entrance end and a first gas exit end, the reducing zone terminating at the first gas exit end in an orifice which opens into an entrance of an elongated, longitudinal first gas expansion zone; passing the gas through the first gas expansion zone having a second gas entrance end and a second gas exit end, the second gas entrance end and the second gas exit end being at opposite ends of its longitudinal axis, an inner wall and a substantially constant cross-sectional area perpendicular to the axis, which area is larger than that of the orifice; passing the gas through the exit end of the first gas expansion zone opening into a third gas entrance of a second gas expansion zone having the third gas entrance end and a third gas exit end at opposite ends of its longitudinal axis, an inner wall and a cross-sectional area perpendicular to the axis that increases from the third gas entrance to the third gas exit; and introducing the gas from the third gas exit into the reactor.