Process for the safe and environmentally sound production of...

C - Chemistry – Metallurgy – 07 – C

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260/636.3, 260/4

C07C 41/03 (2006.01) B01J 10/00 (2006.01) B01J 19/00 (2006.01) B01J 19/24 (2006.01) B01J 19/26 (2006.01) C07C 43/13 (2006.01) C07C 67/08 (2006.01) C07C 67/26 (2006.01) C07C 69/28 (2006.01)

Patent

CA 2025861

An alkylene oxide is reacted in a loop reactor with an organic compound having a reactive hydrogen atom, a gas circulation and a liquid circulation around the reactor being provided and being coupled with one another via an ejector mixing nozzle. To ensure completeness of the reaction and suppression of the formation of by-products such as dioxane, it is essential to reduce the temperature of the entire alkylene oxide gas phase to a temperature below that of the liquid phase, and this is effected by feeding and evaporating liquid alkylene oxide and by cooling of the gas phase on the unit walls.

On fait réagir un oxyde d'alkylène, dans un réacteur en circuit fermé, avec un composé organique possédant un atome d'hydrogène réactif; la circulation de gaz et la circulation de liquide autour du réacteur sont associées l'une à l'autre via une buse mélangeuse d'éjecteur. Pour que la réaction soit complète et éviter la formation de produits secondaires comme le dioxane, il est impératif de réduire la température de l'ensemble de la phase d'oxyde d'alkylène à une température inférieure à celle de la phase liquide, ce qui est fait par apport et évaporation d'oxyde d'alkylène liquide et refroidissement de la phase gazeuse sur les parois de l'unité.

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