Improved method for producing crystalline carboxylic acids...

Details Improved method for producing crystalline carboxylic acids... Improved method for producing crystalline carboxylic acids...

C - Chemistry, Metallurgy

07

C

C07C 51/43 (2006.01) C07C 63/26 (2006.01)

Patent

CA 2282255

Improved process for producing purified aromatic carboxylic acid in the form of dried crystals which comprises cooling the crystals in a fluidized state after the drying step to a temperature at or below 100 ° C prior to packaging and an apparatus therefor.

Cette invention se rapporte à un procédé amélioré permettant de produire de l'acide carboxylique aromatique purifié sous la forme de cristaux séchés, ce procédé consistant à refroidir lesdits cristaux à l'état fluidisé après l'étape de séchage à une température égale ou inférieure à 100 DEG C, avant leur conditionnement. Cette invention présente également l'appareil prévu à cet effet.

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