ELECTROSTATIC SPRAY DRYER APPARATUS AND METHOD

    公开(公告)号:US20220062841A1

    公开(公告)日:2022-03-03

    申请号:US17462261

    申请日:2021-08-31

    IPC分类号: B01J2/04 B05B5/08

    摘要: An electrostatic spray drying system comprising an electrostatic spray nozzle for directing electrically charged liquid into a drying chamber, a drying gas inlet from which drying gas is simultaneously directed, and a conical powder direction plenum for receiving drying gas and entrained dried powder for direction to a filter containing powder separation plenum via a connecting conduit. The powder direction plenum and connecting conduit each have a surrounding water jacket heat exchanger through which cooling water is directed for cooling the drying gas and powder below damaging temperatures prior to entry into the powder separation plenum. The powder separation plenum has a return line for redirecting separated drying gas to the drying chamber through a condenser, blower, and heater for reuse in the system, with condensed water being selectively redirected to the inlet of the powder direction plenum heat exchanger and/or to the cooling water supply.

    Spray dryer system and method
    6.
    发明授权

    公开(公告)号:US10933343B2

    公开(公告)日:2021-03-02

    申请号:US16169718

    申请日:2018-10-24

    摘要: A spray drying system for drying liquid into powder including an elongated body and a closure arrangement at opposite upper and lower ends of the elongated body for forming a drying chamber within the elongated body. One of the closure arrangements including a drying gas inlet for introducing drying gas into the drying chamber. A spray nozzle assembly is supported in one of the closure arrangements. The lower end closure arrangement including a powder collection vessel for collecting powder dried in the drying chamber. The powder collection vessel is configured such that a blanketing gas may be directed into the interior of the powder collection vessel to blanket the powder in the powder collection chamber and thereby protect the powder from exposure to the drying gas from the drying chamber.