Kent W Robinson

US Patent:

39563723, May 11, 1976

Filed:

Nov 2, 1973

Appl. No.:

5/412062

Inventors:

John R. Coleman - Robinson IL
Mark A. Plummer - Littleton CO
Carle C. Zimmerman - Littleton CO
Henry J. Pietrzak - Texas City TX
Wayne E. Luetzelschwab - Littleton CO
Kent W. Robinson - Englewood CO
Donald E. Schroeder - Littleton CO

Assignee:

Marathon Oil Company - Findlay OH

International Classification:

C07C14324

US Classification:

260505S

Abstract:

Petroleum sulfonates useful to impart micellar characteristics to mixtures of hydrocarbon and aqueous medium are obtained by reacting a hydrocarbon gas oil feedstock (average molecular weight 250-700; A/AP aliphatic to aromatic proton) ratio 5-50 moles/mole, 30-100% of the feedstock molecules contain aromatic portions and the A/AP ratio of the aromatic portion being about 3-20 moles/mole) with a solution of EDC (ethylene dichloride) containing 0. 1-0. 3 lb. liquid SO. sub. 3 /lb EDC. The SO. sub. 3 concentration is about 0. 1-0. 3 lb. of SO. sub. 3 /lb of gas oil feedstock. Reaction takes place in a back-mix tubular reactor wherein at least about 4 parts of reaction products are recycled per 1 part of reaction products withdrawn and wherein the gas oil feedstock plus recycled reaction products and the SO. sub. 3 /EDC streams entering the reaction zone are in turbulent flow. Velocity ratio of the feedstock plus recycled reaction products stream to the SO. sub.