Spray drying and dry neutralization of powdered detergents

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Abstract
Spray tower designs for soaps and detergents, practical operating conditions and practices in slurry preparation, and spray tower operation are described and illustrated. The specific problems of exhaust air purification, handling of fines, and the behavior of various builders and surfactants during spray drying are discussed. Dry neutralization systems and the combination of spray drying with dry neutralization to introduce heat sensitive and difficult to atomize materials, to use practically all types of surfactants, to increase capacity, and to save energy are considered also.

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