Patent ID: 9017545
Filing Date: 2015-04-28
Classification: C10G

Abstract:
1. A process for hydrotreating an inferior naphtha fraction, comprising: heating a recycle oil in a heating device; mixing the inferior naphtha fraction with the recycle oil before and/or after the heating device; separating the mixture of the inferior naphtha fraction and the recycle oil in a separator to produce a gas phase and a liquid phase; feeding the gas phase into a hydrotreating reactor to undergo hydrotreating; and feeding part at least a portion of the liquid phase circulates to the heating device as the recycle oil; wherein the heating of the recycle oil is controlled so that a temperature of the gas phase from the separator reaches an inlet temperature of the hydrotreating reactor, wherein the separator comprises a filter having a filter wall arranged to form an inner chamber, wherein the inner chamber is connected to a first outlet of the separator, wherein a liquid portion of the mixture of the inferior naphtha fraction and the recycle oil passes through the filter wall, enters the inner chamber, and exits the separator through the first outlet as the liquid phase.