Patent ID: 9670112
Date: 2017-06-06
CPC Classifications: C07C,C10G,C10L,Y02P

Claim:
1. A process for the production of middle-distillate hydrocarbon-containing bases from a butanol feedstock, with said process comprising at least: a) isomerizing and dehydrating said butanol feedstock in the presence of an amorphous or zeolitic acid catalyst in at least one reactor having a reactor inlet, operating at an absolute pressure at the reactor inlet of between 0.5 and 1.2 MPa and at a temperature at the reactor inlet of between 350 and 450° C. in such a way as to produce a butylenic effluent that contains water and more than 95% by weight butylene relative to the total mass of the carbon-containing compounds that are present in said butylenic effluent, b) separating the water that is present in said butylenic effluent at a pressure of between 0.5 and 1.2 MPa and at a temperature of between 35 and 60° C., in such a way as to produce an organic liquid effluent, c) purifying the organic liquid effluent that comes from b) in such a way as to produce a purified organic effluent, d) oligomerizing a first oligomerization feedstock in the presence of an amorphous catalyst in at least one reactor that operates at an absolute pressure of between 0.5 and 10 MPa, at a temperature of between 60 and 90° C., and at an hourly volumetric flow rate of between 0.1 and 10 h e) oligomerizing said first oligomerization effluent, in the presence of an amorphous catalyst in at least one reactor that operates at an absolute pressure of between 2 and 15 MPa, at a temperature of between 100 and 200° C., and at an hourly volumetric flow rate of between 0.1 and 10 h f) fractionating said second oligomerization effluent into at least three products which are: a light product that contains more than 50% by weight of C g) oligomerizing at least a portion of said intermediate product in the presence of an amorphous catalyst in at least one reactor that operates at an absolute pressure of between 2 and 15 MPa, at a temperature of between 100 and 200° C., and at an hourly volumetric flow rate of between 0.1 and 5 h h) hydrogenating at least a portion of said middle distillate product in the presence of a catalyst that comprises at least one metal of group VIII in at least one reactor that operates at an absolute pressure of between 2 and 4 MPa, at a temperature of between 100 and 350° C., and at an hourly volumetric flow rate of between 1 and 5 h wherein the first oligomerization feedstock in d) comprises at least a portion of the purified organic effluent that comes from c), the entire third oligomerization effluent that comes from g), and at least a portion of the light product that comes from f).