Method for the production of waterfree and dustfree anionic surfactants
    42.
    发明授权
    Method for the production of waterfree and dustfree anionic surfactants 有权
    无水和无尘阴离子表面活性剂的生产方法

    公开(公告)号:US06288021B1

    公开(公告)日:2001-09-11

    申请号:US09269102

    申请日:1999-03-19

    IPC分类号: C11D1706

    摘要: A process for making substantially water- and dust-free anionic surfactant granules of high bulk density involving: (a) providing a starting material containing a water-containing paste of a monoglyceride (ether) sulfate having a solids content of at least 20% by weight, based on the weight of the paste; (b) providing a horizontally mounted thin-layer evaporator with rotating internals; (c) providing a negative temperature gradient within the evaporator; (d) passing air into the evaporator in countercurrent to the flow of starting material; and (e) simultaneously drying and granulating the starting material by passing it through the evaporator to form anionic surfactant granules having a residual water content of below 2% by weight.

    摘要翻译: 制备基本上具有高堆积密度的无水和无尘阴离子表面活性剂颗粒的方法,包括:(a)提供含有固体含量为至少20%的单酸甘油酯(醚)硫酸盐的含水糊剂的原料,其中固含量为至少20% 重量,基于糊的重量; (b)提供具有旋转内部件的水平安装的薄层蒸发器; (c)在蒸发器内提供负温度梯度; (d)与起始材料的流动逆流使空气进入蒸发器; 和(e)通过使原料通过蒸发器同时干燥和造粒,形成残留水含量低于2重量%的阴离子表面活性剂颗粒。