METHOD OF REPROCESSING OF THE HYDROCARBON MIXTURE CONTAINING ISOBUTENE Russian patent published in 2006 - IPC C07C43/04 C07C41/06 

FIELD: petrochemical industry; method of reprocessing of the hydrocarbon mixture containing isobutene.

SUBSTANCE: the invention is pertaining to the field of petrochemical industry, in particular, to the method of reprocessing of the hydrocarbon mixture containing isobutene. The invention provides, that conduct the chemical transformation of isobutene and non-tertiary alcohol (alcohols) in the reactionary zone (zones) at presence of the solid acid catalyst at the temperature of 30-100°C predominantly in the alkyl-tret.butyl ester (esters) and isobutene dimers. Then from the reaction mixture distill at least hydrocarbons C₄ in the rectification zone and it is possible to use the subsequent hydrogenation of the formed isobutene dimers. At that in the reactionary zone (zones) as the source substances feed the non-tertiary alcohol (alcohols) and isobutene in the hydrocarbon mixture in the molar ratio from 0.1 up to 0.9 and hold the temperature and the time of the contact to the catalyst providing transformation of the major part of the alcohol (alcohol) into the alkyl-tret.butyl ester (esters) and not resulting in the domination of the reverse reaction of decomposition of the formed epy alkyl-tret.butyl ester (esters) in the end of the reaction zone and to the significant increase of the amount of the non-tertiary alcohol (alcohol) in the gating out of it stream. The technical result of the invention is the increased quality of the final product.

EFFECT: the invention ensures the increased quality of the final product.

15 cl, 3 dwg, 10 ex