METHOD FOR PRODUCING TERT-BUTYL ALCOHOL

摘要

The invention relates to the field of petroleum chemistry, to be more precise to methods for producing tert-butyl alcohol, a semifinished product in organic synthesis, and can be used in the production of isobutylene and isoprene which are used in the manufacture of butyl rubber. What is proposed is: a method for producing tert-butyl alcohol by liquid-phase hydration of isobutylene or an isobutylene-containing hydrocarbon mixture which comprise 0.1-1.2 % by mass of isoprene with water at elevated temperature in the presence of tert-butyl alcohol as solvent with a single-pass feed of feedstock into a column-type reactor which is filled with a sulfocationic catalyst. The end product is separated off from the resultant reaction mixture by fractional distillation. The proposed method makes it possible to reduce the amount of byproducts produced to 0.35 % or lower, and at the same time to extend the service life of the catalyst to 12-14 thousand hours whilst maintaining the productivity of the process.