Patent ID: 9045700
Filing Date: 2015-06-02
Classification: C10G,Y02P

Abstract:
1. A method for upgrading a synthesis oil synthesized by the Fisher-Tropsch synthesis reaction, the method comprising: a hydroisomerization step of hydroisomerizing the synthesis oil to convert at least a portion of normal paraffins with a carbon number of 5 or more into isoparaffins as well as to convert alcohols and olefins into paraffins, and to obtain a hydroisomerized synthesis oil; a crude oil mixing step of mixing the hydroisomerized synthesis oil with a crude oil to obtain a mixed crude oil; a mixed crude oil transferring step of transferring the mixed crude oil to a crude oil distillation unit of a refinery; and a mixed crude oil refining step of processing the transferred mixed crude oil in petroleum refining facilities of the refinery including at least the crude oil distillation unit; wherein a content ratio of the normal paraffins and the isoparaffins in the hydroisomerized synthesis oil is adjusted in the hydroisomerization step, based on the composition and properties of the crude oil.