C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 51/44 (2006.01) C07C 53/08 (2006.01)
Patent
CA 2556971
Disclosed is a method of controlling a separation process for removing permanganate reducing compounds from a process stream in the methanol carbonylation process for making acetic acid, where the method includes the steps of measuring the density of a stream containing acetaldehyde and methyl iodide, optionally calculating the relative concentrations of acetaldehyde and methyl iodide in the stream, and adjusting distillation or extraction process parameters based on the measured density or one or more relative concentrations calculated therefrom.
L'invention concerne une méthode de contrôle d'un procédé de séparation permettant de retirer des composés de réduction de permanganate d'un liquide à traiter dans le procédé de carbonylation de méthanol afin de fabriquer un acide acétique. Ce procédé consiste à mesurer la densité d'un liquide à traiter contenant de l'acétaldéhyde et de l'iodure de méthyle, facultativement à calculer les concentrations relatives d'acétaldéhyde et de iodure de méthyle dans le liquide, et à régler les paramètres du procédé de distillation ou d'extraction en fonction de la densité mesurée ou une ou plusieurs concentrations relatives calculées ainsi.
Kulkarni Shrikant U.
Trueba David A.
Celanese International Corporation
Smart & Biggar
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