Spray drying process
    16.
    发明授权

    公开(公告)号:US3620776A

    公开(公告)日:1971-11-16

    申请号:US3620776D

    申请日:1968-06-28

    申请人: NESTLE SA

    摘要: A drying method for liquids is provided in which the liquid is sprayed, together with a gaseous fluid such as steam, into a lowpressure zone to cause freezing of the liquid in small particle form, and the frozen particles are then freeze-dried. The liquid may be a bioliggical solution, fruit juice or tea or coffee extract. An apparatus is also provided, comprising a freezing chamber, a two fluid nozzle simultaneously spraying liquid and gas into the chamber, a vacuum system with condensers for maintaining a low pressure within the chamber and a freeze-drying chamber.