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US 7,682,502 B2Granted
Process to hydrogenate aromatics present in lube oil boiling range feedstreams
AssigneeExxonMobil Research and Engineering Company
InventorsStephen J. McCarthy, Wenylh F. Lai, Jean W. Beeckman, Sylvain S. Hantzer
Life of this patent
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Abstract
An improved hydrogenation process for lube oil boiling range feedstreams utilizing a catalyst comprising at least one Group VIII noble metal selected from Pt, Pd, and mixtures thereof having an average pore diameter of about 15 to less than about 40 Å.
Claims28
An aromatics hydrogenation process for lube oil boiling range feedstreams comprising:
- contacting a lube oil boiling range feedstream containing aromatics and nitrogen and organically bound sulfur contaminants with a hydrogenation catalyst in the presence of a hydrogen-containing treat gas in a reaction stage operated under effective aromatics hydrogenation conditions to produce a reaction product with reduced aromatics content, wherein said hydrogenation catalyst comprises:
- i) an inorganic, porous, non-layered, crystalline, mesoporous support material;
- ii) at least one hydrogenation-dehydrogenation component selected from the Group VIII noble metals, wherein the average pore diameter of the support material is about 15 to less than about 40 Å and
- iii) a binder material wherein the support material and the binder material are composited in a ratio of support material to binder material ranging from about 65 parts support material to 35 parts binder material to 35 parts support material to 65 parts binder material, all ratios being by weight.
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An aromatics hydrogenation process for lube oil boiling range feedstreams comprising:
- a) contacting a lube oil boiling range feedstream containing aromatics, nitrogen and organically bound sulfur contaminants in a first reaction stage operated under effective hydrotreating conditions and in the presence of hydrogen-containing treat gas with a hydrotreating catalyst comprising about at least one Group VIII metal oxide and at least one Group VI metal oxide thereby producing a reaction product comprising at least a vapor product and a liquid lube oil boiling range product;
- and b) contacting said reaction product with a hydrogenation catalyst in the presence of a hydrogen-containing treat gas in a second reaction stage operated under effective aromatics hydrogenation conditions, wherein said hydrogenation catalyst comprises:
- i) an inorganic, porous, non-layered, crystalline, mesoporous support material;
- ii) a binder material wherein the support material and the binder material are composited in a ratio of support material to binder material ranging from about 65 parts support material to 35 parts binder material to 35 parts support material to 65 parts binder material, all ratios being by weight;
- and iii) at least one hydrogenation-dehydrogenation component selected from the Group VIII noble metals, wherein the average pore diameter of the support material is about 15 to less than about 40 Å.
2 more elements
Dependencies are inferred from the claim text.