Process for preparing olefin sulfonates

Details Process for preparing olefin sulfonates Process for preparing olefin sulfonates

1973-05-17

1977-11-22

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260456R, C07C13900

Patent

active

040596206

ABSTRACT:
An improved process for preparing olefin sulfonic acids and sulfonates by the reaction of sulfur trioxide and an olefin mixture having 14 to 16 carbon atoms per molecule which includes at least 30 percent by weight dimer olefins is disclosed. The olefin mixture and sulfur trioxide are mixed and reacted in a reaction zone of a continuous falling film reactor apparatus having a segregated cooling jacket, wherein the upper 1/8 to 1/3 of the reaction zone is operated and maintained at a constant temperature of between about 0.degree. to below about 27.degree. C and the lower 7/8 to 2/3 of the reaction zone is operated and maintained at a higher constant temperature of between about 25.degree. to about 40.degree. C. The acidic reactor effluent is then aged prior to neutralization. The improved process produces a resulting product having a low oil content and low color at increased production rates while greatly reducing the off gas plume for improved air pollution abatement.

REFERENCES:
patent: 3328460 (1967-06-01), Vander May
patent: 3350428 (1967-10-01), Brooks et al.
patent: 3427342 (1969-02-01), Brooks et al.
patent: 3441191 (1969-05-01), Nielsen
patent: 3531518 (1970-09-01), Ohren et al.
patent: 3769332 (1973-10-01), Nagayama et al.
patent: 3781339 (1973-12-01), Tuvell et al.

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