Patent ID: 8207106
Filing Date: 2012-06-26
Classification: B01J,C11D

Abstract:
1. A method for producing anion surfactant granules, comprising steps of: adding an aqueous solution of an anion surfactant whose anion surfactant concentration is 5 to 35% by weight at a reduced pressure to a granulator or dryer having an agitating blade; and granulating and drying the aqueous solution; wherein granulating and drying are performed at a temperature of the anion surfactant granule in the granulator or dryer within the range of 5 to 60° C.; wherein an internal pressure of the granulator or dryer is 0.5 to 20 kPa; wherein the anion surfactant is an alkylsulfate salt; wherein an adding rate of the aqueous solution of an anion surfactant is 10 to 100 kg/Hr per 1 m wherein an average particle diameter of the anion surfactant granules obtained is not less than 0.2 mm and not more than 2.5 mm.