公开(公告)号：US4229249A

公开(公告)日：1980-10-21

申请号：US22885

申请日：1979-03-22

申请人： Karsten S. Felsvang ,  Ove E. Hansen

发明人： Karsten S. Felsvang ,  Ove E. Hansen

IPC分类号： C08F6/00 ,  B01D1/18 ,  B29B9/00 ,  C08F2/00 ,  C08F6/06 ,  C08J3/12 ,  F26B3/12

CPC分类号： C08J3/122 ,  B01D1/18 ,  F26B3/12 ,  C08J2327/06 ,  Y10S159/10

摘要： An aqueous dispersion of polyvinylchloride or vinylchloride copolymerizate is spray dried in a flow of drying air in a drying tower which contains at least one two-fluid nozzle for atomizing the aqueous dispersion and an injection member for pressurized air for providing the atomized particles with a rotary motion, about the longitudinal axis of the drying tower. A controlled rotary motion is imparted to the mixture of sprayed particles and the drying air. The heat economy and product quality are improved since it is possible to use a high drying air inlet temperature and to obtain an easily grindable powder suitable for producing stable, low viscosity plastisols.

摘要翻译： 将聚氯乙烯或氯乙烯共聚物的水分散体在干燥塔中的干燥空气流中喷雾干燥，该干燥塔包含至少一个用于雾化水分散体的双流体喷嘴和用于加压空气的注射构件，用于向雾化颗粒提供旋转 关于干燥塔的纵向轴线的运动。 受控的旋转运动被赋予喷雾颗粒和干燥空气的混合物。 由于可以使用高的干燥空气入口温度并且获得适于生产稳定的低粘度增塑溶胶的易于研磨的粉末，因此热效率和产品质量得到改善。