Patent ID: 8906224
Filing Date: 2014-12-09
Classification: C10G

Abstract:
1. A method for producing a lube basestock, comprising: providing a process train including a first catalyst that is a hydroprocessing catalyst, and a second catalyst that is a dewaxing catalyst, wherein the dewaxing catalyst includes at least one non-dealuminated, unidimensional 10-member ring pore zeolite and at least one Group VIII metal; processing a first feedstock in the process train at first hydroprocessing conditions and first catalytic dewaxing conditions to produce a lube basestock having a pour point less than −15° C. and a total liquid product 700° +F. (371° C.) yield of at least 75 wt %, the first catalytic dewaxing conditions including a temperature of 400° C. or less, the first feedstock having a first sulfur content when exposed to the dewaxing catalyst of 1000 wppm or less on a total sulfur basis; processing a second feedstock in the same process train at second hydroprocessing conditions and second catalytic dewaxing conditions, the second feedstock having a sulfur content when exposed to the dewaxing catalyst of greater than 1000 wppm on a total sulfur basis, to produce a second lube basestock having a pour point less than −15° C. and a total liquid product yield of at least 75 wt %, wherein the second catalytic dewaxing conditions include a temperature of 400° C. or less with the second catalytic dewaxing temperature being from 20 to 50° C. greater than the first catalytic dewaxing temperature, wherein the dewaxing catalyst comprises includes at least one low surface area metal oxide refractory binder having a surface area of 100 m wherein the processing of the first feedstock and the processing of the second feedstock are alternated in any sequence as a function of time.