Middle distillate producing hydrocracking process
AssigneeUop LLC
InventorKarl Z. Steigleder
Life of this patent
Estimating the term…
Abstract
A process for the production of a middle distillate fraction comprising contacting a hydrocarbon feedstock at middle distillate production conditions with a catalyst composition comprising a first modified Y zeolite component and a second modified Y zeolite component in admixture with a refractory inorganic oxide matrix and hydrogenation metals. The first and second modified Y zeolites have an average unit cell size within the range of about 24.20 to 24.85 A and have a difference between their respective average unit cell sizes of at least 0.1 A.
Claims15
In a process for hydrocracking a hydrocarbon feedstock to middle distillate fractions boiling in the range of about 300.degree. F. to 700.degree. F. comprising contacting said feedstock at hydrocracking conditions with a catalyst composition comprising a mixture of a first hydrothermally treated Y zeolite component and a second hydrothermally treated Y zeolite component in intimate admixture with a refractory inorganic oxide matrix wherein the unit cell size of the first and second Y zeolite components ranges from about 24.20 to 24.35 Angstroms and the difference between the unit cell size of the first and second Y zeolite components is at least 0.1 Angstrom.
The process of claim 16 wherein said first hydrothermally treated Y zeolite has a unit cell size of about 24.25 A.
The process of claim 16 wherein said second hydrothermally treated Y zeolite has a unit cell size of about 24.35 A.
The process of claim 16 wherein said first hydrothermally treated Y zeolite is present in an amount of about 1.0 to 20.0 wt. %.
The process of claim 16 wherein said second hydrothermally treated Y zeolite is present in an amount of about 1.0 to 20.0 wt. %.
The process of claim 16 wherein said catalyst composition contains hydrogenation metals selected from the group consisting of Group VIB and Group VIII metals.
Dependencies are inferred from the claim text.