Method for producing tertiary amine

摘要

The present invention discloses the method for producing a tertiary amine, using the column reactor packed with catalyst layers, containing supplying a liquid and a gaseous raw materials from the bottom of the column, reacting these raw materials in the column, and discharging the product from the top of the column, wherein the column reactor includes two or more honeycomb catalyst layers as the catalyst layers, one or more spaces between each honeycomb catalyst layer, and one or more rectifying sections that prevents a partial or whole back flow of the raw materials, arranged in each space without contacting with the honeycomb catalyst layer.

主权项

1. A method for producing a tertiary amine through a sequence of reactions of:
(i) dehydrogenation of an alcohol to produce an aldehyde; (ii) addition reaction of a raw material amine to the aldehyde and dehydration to form an imine and/or enamine; and (iii) hydrogen reduction of the imine and/or enamine generated by addition reaction and dehydration to produce a tertiary amine, wherein reactions (i) and (iii) are conducted in a single column reactor packed with catalyst layers by supplying the alcohol and hydrogen from the bottom of the column reactor, and reaction (ii) is conducted in another reactor without the catalyst layers used in the reaction (i) or (iii), wherein the column reactor includes two or more honeycomb catalyst layers as the catalyst layers, a space between two or more honeycomb catalyst layers, and rectifying sections for preventing back flow of part or the whole of the raw materials, arranged in the space without contacting with the honeycomb catalyst layer.