Nalco Chemical Company

Nalco Chamical Company

John C Kisalus

Morris Kaplan

Alkylation catalyst of the type used in the refining of petroleum can be improved by using a promoter composition which contains an alkyl phosphate ester amine salt and pinene.

Alkylation aid

Alkylation processes of the type used in the refining of petroleum can be improved by using a promoter composition which contains an alkyl phosphate ester amine salt and pinene.

Triphenylphosphine oxide prevents fouling in ethylene furnaces.

Triphenylphosphine oxide as an ethylene furnace antifoulant

An improved method for reducing fouling and corrosion of ethylene cracking furnaces petroleum feedstocks, the improvement comprising treating the petroleum feed stock with at least 10 ppm of a combination of a phosphorous antifoulant compound and a filming inhibitor. The antifoulant compound is chosen from the group consisting of phosphite esters, phosphate esters, thiophosphite esters, thiophosphate esters and mixtures thereof, said esters being characterized by the formulas ##STR1## where X equals S or O, and R.sub.1, R.sub.2, and R.sub.3, are each independently selected from the group consisting of hydrogen, water soluble amine, alkyl, aryl, alkaryl, cycloalkyl, alkenyl, and aralkyl group provided that in at least one and not more than two of each R.sub.1, R.sub.2, and R.sub.3 are water soluble amines having partition coefficients greater than 1.0 mixed with a filming amount of at least 2-20 ppm imidazoline filming inhibitor prepared preferably from naphthenic or fatty acids and poly amines.

Ethylene furnace antifoulants

Triphenylphosphine prevents fouling in ethylene furnaces.

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Houston, TX, United States of America

John C Kisalus