Process for hydrotreating renewable sources with indirect heating

摘要

Treating charges obtained from renewable sources comprises: (a) hydrotreating comprising at least two catalytic areas in which the incoming stream comprises the charge mixed with at least a part of a hydrotreated liquid effluent obtained from step (b) and a hydrogen-rich gas, and is introduced into the first catalytic area at a temperature of 150-260[deg] C; and (b) separating the effluent obtained from the step (a) of hydrotreatment allowing the separation of a gaseous effluent and a hydrotreated liquid effluent. Treating charges obtained from renewable sources comprises: (a) hydrotreating comprising at least two catalytic areas in which the incoming stream comprises the charge mixed with at least a part of a hydrotreated liquid effluent obtained from step (b) and a hydrogen-rich gas, and is introduced into the first catalytic area at a temperature of 150-260[deg] C, in which the effluent obtained from the first catalytic area is then introduced, mixed with at least a part of a hydrotreated liquid effluent obtained from step (b) and preheated in the following catalytic areas at a temperature of 260-320[deg] C; and (b) separating the effluent obtained from the step (a) of hydrotreatment allowing the separation of a gaseous effluent and a hydrotreated liquid effluent of which at least a part is recycled at the top of each catalytic area of step (a).