C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 51/47 (2006.01) C07C 51/265 (2006.01) C07C 51/43 (2006.01) C07C 51/487 (2006.01) C07C 63/26 (2006.01)
Patent
CA 2505977
Disclosed is a process to produce a purified carboxylic acid slurry. The process comprises removing impurities from a crystallized product in a solid liquid displacement zone to form the purified carboxylic acid slurry. The process produces purified carboxylic acid slurry having good color and low impurity levels without the use of purification steps like hydrogenation or an impurity removal process.
L'invention concerne un procédé de production d'une boue d'acide carboxylique purifiée. Ce procédé consiste à décharger les impuretés d'un produit cristallisé dans une zone de déplacement liquide-solide afin de former une boue d'acide carboxylique purifiée. Le procédé produit une boue d'acide carboxylique purifiée de couleur agréable et à niveaux d'impuretés faibles sans utiliser d'étapes de purification telles que l'hydrogénation ou un procédé d'élimination des impuretés.
Lin Robert
Sheppard Ronald Buford
Tennant Brent Alan
Woodruff Thomas Earl
Eastman Chemical Company
Gowling Lafleur Henderson Llp
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