MULTI-STAGE SPRAY DRYING METHOD IN MANUFACTURING HEAVY DUTY DETERGENTS

MULTI-STAGE SPRAY DRYING METHOD IN MANUFACTURING HEAVY DUTY DETERGENTS
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多级喷雾干燥法在重垢洗涤剂生产中的应用

DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
S. Toyoda
S. Toyoda
中科院分区：
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文献类型：
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作者：
Masayoshi Nakamura;Kazuo Kazuo;Takeshi Arai;S. Toyoda

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液滴碰撞；逆流喷雾干燥机；干燥速率;传热;nonphosphated洗涤剂;研究了无磷颗粒洗涤剂的喷雾干燥方法，以减少结块颗粒的数量。团块的形成主要受喷雾云中液滴浓度和碰撞时液滴含水量的影响。应减少不同喷雾云的重叠。喷嘴区附近的干燥速率比Ranz-Marshal方程计算的干燥速率要快得多。针对这些现象，提出了“多级喷雾干燥”技术，其特点是在一个喷雾干燥机内实现多级喷雾干燥。因此，生产的非磷酸盐洗涤剂具有与磷酸盐洗涤剂相同的粉末性能和生产率。
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.