Catalytic dewaxing of hydrocarbon oils
AssigneeMobil Oil Corporation
InventorsNai Y. Chen, William E. Garwood
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Abstract
Hydrocarbon oils, especially waxy distillate lubricating oil stocks suitable for the preparation, by conventional unit processes, of high V.I., low pour point lubricating oils, are advantageously catalytically dewaxed with synthetic offretite catalyst preferably associated with a hydrogenation metal such as platinum or palladium.
Claims15
In a process for manufacturing a refined lubricating oil stock having a V.I. of at least 85 and a pour point not greater than +25.degree. F. from a waxy stock boiling within the range of from about 450.degree. to about 1050.degree. F., said process comprising catalytically dewaxing said waxy stock to a pour point not greater than +25.degree. F., the improvement whereby effecting said dewaxing with increased selectivity, which comprises:
- contacting said waxy stock and hydrogen with a catalyst comprising synthetic offretite at a pressure of about 200 to 2000 psig, a LHSV of from 0.1 to 5.0, a temperature from about 500.degree. to about 750.degree. F.;
- and recovering a dewaxed oil stock with a pour point not greater than +25.degree. F.
A process for treating a hydrocarbon oil feed which comprises contacting said feed at a temperature of 500.degree. F. to 1100.degree. F., a LHSV of 0.2 to 50, and a pressure of 15 to 3000 psig with a catalyst comprising synthetic offretite having the X-ray diffraction pattern set forth in Table I, and recovering a hydrocarbon oil having a reduced pour point, reduced cloud point, or reduced CFPP.
Dependencies are inferred from the claim text.