Process for the production of hexamethlenediamine

An apparatus for the production of hexamethylenediamine, comprising:

• a vertical tubular reaction vessel having an ejection device positioned inside said vertical tubular reaction vessel for promoting the agitation of the reaction medium;
• a separation device positioned in a top part of said vertical tubular reaction vessel for enabling the separation of a gas-phase from a liquid-phase in a reaction medium;
• a drawing off device positioned in the top part of said vertical tubular reaction vessel for enabling the drawing off of the reaction product, said drawing off device including a top part connected through a gas pipe to a gas re-cycling pump for feeding back hydrogen to a bottom of the vertical tubular reaction vessel, said bottom part of the vertical tubular reaction vessel connected to a pipe for feeding adiponitrile, a pipe for feeding regenerated catalyst, a pipe for the feeding aqueous solution of an inorganic base, and a pipe for feeding hydrogen;
• wherein the apparatus includes:
• a pipe connecting said drawing off device to a first tank;
• a pipe connecting said vertical tubular reaction vessel to a top part of a washing apparatus;
• a pipe feeding water to a bottom of said washing apparatus;
• a pipe connecting the top part of said washing apparatus to said first tank;
• a pipe connecting the bottom of said washing apparatus to a sedimentation tank, the sedimentation tank including a bottom connected to said pipe for feeding a regenerated catalyst;
• a pipe connecting a bottom of said first tank to a second tank where alkali phase separation occurs;
• a pipe connected to said second tank extracting hexamethylenediamine-water solution;
• and pipes connected to said second tank and said sedimentation tank for extracting wastes.