Patent ID: 7368611
Filing Date: 2008-05-06
Classification: C07C

Abstract:
1. Process for the continuous catalyzed production of methylmercaptan comprising reacting methanol and hydrogen sulphide in the presence of a catalyst therefor in a gas phase at a temperature of 200 to 600° C. and a pressure of 1.5 to 40 bar, in a plurality of zones a) distributing the total amount of the catalyst to at least two zones which are separate from one another, in such a way that the amount of catalyst increases in the flow direction, b) supplying a first of said zones with a gaseous mixture comprising methanol and hydrogen sulphide, c) feeding methanol and hydrogen sulphide between the first, the second and optionally the further zones in a liquid and/or gaseous form, and d) separating off methylmercaptan formed thereby, e) the total molar ratio of the amounts of hydrogen sulphide and methanol employed amounting to 1.1:1 to 10:1.