公开(公告)号：US10106751B2

公开(公告)日：2018-10-23

申请号：US15368888

申请日：2016-12-05

Applicant: ExxonMobil Research and Engineering Company

Inventor： Liezhong Gong ,  Corry S. Powers ,  Eric D. Joseck ,  Beatrice M. Gooding

IPC: C10G73/02 ,  C10G73/42 ,  G01N33/28 ,  G01N33/30 ,  C10M101/02 ,  C10G21/00 ,  C10G45/58 ,  C10G45/02 ,  C10G45/00 ,  G01N25/48 ,  C10M169/00

Abstract: Methods are provided for rapidly characterizing a feedstock being considered for lubricant base oil production in order to determine the viscosity index potential of the feedstock. It has unexpectedly been discovered that the DDVI value for a feedstock at a specified pour point can be predicted based on a) the feed distillate residual wax content at a temperature as determined by Differential Scanning Calorimetry, such as the feed distillate residual wax content at a temperature corresponding to the specified pour point temperature; b) the feed distillate refractive index; c) the feed distillate kinematic viscosity at a temperature, such as kinematic viscosity at 100° C.; and d) the distillate volume-averaged boiling point. Based on this unexpected correlation, the VI potential of a feedstock can be determined based on measurement of properties that can be performed on a time scale corresponding to one or a few days using a few milliliters of feedstock.