Patent ID: 9308515
Filing Date: 2016-04-12
CPC Classification: B01J,C07C

Claim Text:
1. An apparatus, comprising: a reactor, a driving jet nozzle at one end of the reactor, adapted for injecting a reaction mixture from a bottom region of the reactor via an external loop into the bottom region of the reactor, an inlet adapted for a nitroaromatic at one end of the reactor, an inlet adapted for hydrogen, and a measuring device adapted to detect partial or complete blocking of the inlet adapted for the nitroaromatic after improper contact between the inlet adapted for the nitroaromatic and a liquid phase in the reactor, wherein the inlet adapted for the nitroaromatic is distinct from the driving jet nozzle, wherein the apparatus is adapted such that, at a correct fill height of the reactor, direct physical contact between the inlet adapted for the nitroaromatic and the liquid phase occurs neither in the reactor nor in a pumped circuit, either in an operating state or on shutting down, and wherein the apparatus is adapted to hydrogenate the nitroaromatic with the hydrogen in the reactor in the presence of a suspended catalyst in the liquid phase, thereby obtaining an aromatic amine.