Method and apparatus for making acetic acid with improved...

Details Method and apparatus for making acetic acid with improved... Method and apparatus for making acetic acid with improved...

C - Chemistry, Metallurgy

07

C

C07C 51/44 (2006.01) C07C 51/12 (2006.01) C07C 53/08 (2006.01)

Patent

CA 2702069

An improved apparatus and method of producing acetic acid includes recovering product from the residue of a light ends column and feeding the acid so recovered forward in order to increase system productivity. Load on the light ends column is reduced and load on a dehydrating column may also be lessened in a preferred embodiment where the recovered acid is fed forward without further water removal.

La présente invention concerne un appareil et un procédé améliorés de production d'acide acétique comprenant les étapes consistant à récupérer du produit à partir du résidu provenant des fractions légères d'une colonne et à alimenter vers l'avant l'acide ainsi récupéré afin d'augmenter la productivité du système. La charge des fractions légères d'une colonne est réduite et la charge d'une colonne de déshydratation peut également être réduite dans un mode de réalisation préféré où l'acide récupéré est chargé de nouveau sans élimination d'eau supplémentaire.

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