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US 9,039,892 B2Granted
Nano catalytic dewaxing of heavy petroleum wastes (>C-23 alkanes)
OwnerSyed Tajammul Hussain, Mehmood Ahmedinventors
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Abstract
A catalyst comprising of nano nickel-silica catalyst for dewaxing of heavy petroleum feed at a temperature 200-350° C. at 8 bar and 30 bar hydrogen pressure and in the presence of hydrogen is designed for petrochemical industries. According to a specific aspect of the invention, the nano catalyst is designed and employed to convert heavy hydrocarbon feeds of high viscosity index to low pour point and good stability in a single step.
Claims12
A process for dewaxing a heavy wax feed stock consisting of hydrocarbons with higher than 23 carbons comprising:
- mixing the feed stock with a nickel-silica nano catalyst in an autoclave;
- heating the autoclave to a temperature of 160° C. while flushing with argon gas;
- pressurizing the autoclave with hydrogen gas to provide a pressure of 8 to 30 bar;
- and,
- continuous mixing the mixture for 30-50 minutes at 100 rotation per minute, cooling to room temperature and separating the solid and liquids in the autoclave.
2 more elements
Dependencies are inferred from the claim text.