Production of anionic surfactant granules by in situ...

Details Production of anionic surfactant granules by in situ... Production of anionic surfactant granules by in situ...

C - Chemistry, Metallurgy

11

D

C11D 11/00 (2006.01) C11D 11/04 (2006.01)

Patent

CA 2420295

A process for the production of detergent particles, comprises feeding an acid precursor of an anionic surfactant and a neutralising agent into a horizontal thin-film evaporator/drier comprising a mixing region, a drying region and a cooling region. The resultant detergent particles are graded to separate an oversize granule fraction in which at least 70 wt% of the particles have a minimum diameter of 1000 µm. This fraction is fed back into the process.

L'invention concerne un procédé de production de particules détergentes, consistant à injecter un précurseur d'acide de tensioactif anionique et un agent neutralisant dans un évaporateur/séchoir horizontal à film mince comportant une zone de mélange, une zone de séchage et une zone de refroidissement. Les particules détergentes obtenues sont classées pour dégager la fraction de granules surdimensionnées dans laquelle au moins 70 % en poids des particules présentent un diamètre minimum de 1000 µm. Cette fraction est retournée dans le processus.

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