Process for preparing tert-alkyl esters and reactor for carrying-out said process

The invention relates to a process for the preparation of tertalkyl ethers, preferably methyltertbutylether, by the reaction between isooolefins and aliphatic alcohols at 60 ... 150 degrees C and in the presence of catalyst in the form of styreneivinylbenzenesulfonated resins, characterized in that , in order to obtain an advanced purity reaction product, the reaction of formation of the tertalkyl ether is performed concomitantly with its separation from the hydrocarbons and the compounds existing in the process, in a single reaction apparatus, the working pressure being 500 ... 1000 KPa. The reactor for carrying out the process according to the invention, in order to concomitantly carry out the reaction proposed to form tertalkyl ether and to separate the basic product from the rest of the components, comprises some fractionation plates separated by other plates which are at least three and provided with a bed. catalyst in the form of spherical particles with a diameter of 0.5 ... 1mm, provided with a web for retaining the catalyst, the isooolefin being introduced in such a position that at least two of the plates are located below it, and the alcohol is introduced at the top of the last catalyst bed.