MULTI-STAGE SPRAY DRYING METHOD IN MANUFACTURING HEAVY DUTY DETERGENTS |
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| Authors: | Masayoshi Nakamura Kazuo Kazuo Takeshi Arai Sadao Toyoda |
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| Affiliation: | Lion Corporation, Research and Development Headquaters , No. 13-12, 7-Chome, Hirai, Edogawa-ku, Tokyo, JAPAN |
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| Abstract: | Collision of droplets; counter-current spray dryer; drying rate; heat transfer; nonphosphated detergent; spray drying The spray drying method of non-phosphated granular detergents is studied to decrease the amount of agglomerate particles. The formation of agglomerates is mainly influenced by the concentration of droplets in spray cloud and the water content of droplets at the time of collision. The overlaps of different spray clouds should be de- creased. The drying rate near the nozzle zone is considerably faster than that calculated by Ranz-Marshal’s equation. According to these phenomena, “Multi-stage spray drying” is developed, which is characterized by in stalling plural spraying stages in a spray dryer. Consequently, non-phosphated detergents are manufactured with the same powder properties and productivity as phosphated detergents. |
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| Keywords: | Collision of droplets: counter-current spray drye drying rate heat transfer nonphosphated detergen spray drying |
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