Ammonia → 3,3'-Iminodipropionitrile

Beteiligte Stoffe

Reaktionsschritte

The reaction takes place in a tube reactor which has an internal diameter of 36 mm and a length of 70 cm. At the lower end of the reactor there is a glass frit G 4, manufactured by the Schott Company, Mainz. It is designated 160 D and has a 30 mm diameter. The glass frit functions as a distribution device. The tube has a total volume of 700 ml. and the effective reaction volume (the space used during the reaction) equals 500 ml. 9 liters of gaseous ammonia are fed into the reactor per hour. The gas flows through the glass frit and reacts with the acrylonitrile. In order to monitor the gas conversion, the amount of unreacted gas is determined using a gas meter. 52 ml of acrylonitrile and 3.8 ml of water are pumped hourly into the upper end of the reactor at a rate which corresponds to a space velocity of 0.1 hr-1. After 10 hours of residence time, the reaction mixture is removed at a point above the distribution device located at the lower end of the tube reactor. The yield of bis-(2-cyanoethyl)-amine obtained is 91 %.

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