Method for separating straight chain hydrocarbons using zeolites

Details Method for separating straight chain hydrocarbons using zeolites Method for separating straight chain hydrocarbons using zeolites

1982-04-26

1983-07-19

Gantz, Delbert E.

Mineral oils: processes and products

Fractionation

Adsorption

585950, C10G 2503

Patent

active

043942547

ABSTRACT:
A method for separating straight chain hydrocarbons from a hydrocarbon fraction having straight chain hydrocarbons, nonstraight chain hydrocarbons, and a sulfur compound, includes the steps of contacting the hydrocarbon fraction with a 5A zeolite having crystals of an average size larger than about 700 angstroms which selectively absorbs the straight chain hydrocarbons to the substantial exclusion of the nonstraight chain hydrocarbons and sulfur compound. Large zeolite crystals are found to have a much longer useful life in this separation method than zeolite crystals having an average size of less than about 700 angstroms as measured along one edge of the zeolite crystal. The hydrocarbon fraction has more than about 800 wppm total sulfur including more than about 15 wppm mercaptan.

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