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    Apparatus for measuring neutrons and gamma rays
    81.
    发明公开
    Apparatus for measuring neutrons and gamma rays 失效
    装置，用于测量中子和伽马辐射。

    公开(公告)号：EP0057569A1

    公开(公告)日：1982-08-11

    申请号：EP82300423.9

    申请日：1982-01-27

    申请人： Hitachi, Ltd. ,  Japan Atomic Energy Research Institute

    发明人： Tominaga, Hiroshi ,  Sase, Yoshihiro ,  Horiuchi, Shoichi

    IPC分类号： G01T3/00 ,  G01N23/08

    CPC分类号： G01T1/38 ,  G01T1/40

    摘要： An apparatus for measuring neutrons and gamma rays is disclosed in which after pulses generated by neutrons are discriminated from pulses generated by gamma rays, two different counted values are obtained (24, 26) for either the pulses generated by neutrons or the pulses generated by gamma rays to control a discriminating circuit between the pulses by neutrons and the pulses by gamma rays so that a ratio between the different counted values is kept constant, and further two different counted values are obtained for either the pulses by neutrons or the pulses by gamma rays in a manner (24, 30) same as the above-mentioned to control the output of a detector (10, 12) so that a ratio between the counted values is kept constant.

    SYSTEM AND METHOD FOR CONTINUOUSLY PREPARING FURFURAL USING LIGNOCELLULOSIC RAW MATERIAL
    87.
    发明公开
    SYSTEM AND METHOD FOR CONTINUOUSLY PREPARING FURFURAL USING LIGNOCELLULOSIC RAW MATERIAL 审中-公开

    公开(公告)号：EP3733655A1

    公开(公告)日：2020-11-04

    申请号：EP18885815.3

    申请日：2018-11-27

    申请人： Eco Environmental Energy Research Institute Limited

    发明人： XU, Bin ,  SIU, Kam Shing ,  LU, Junde ,  CHOW, Connie Hiu Ying

    IPC分类号： C07D307/50

    摘要： The present invention discloses a system and a method for continuously preparing furfural using lignocellulosic raw material. The system comprises an acid solution output unit, a raw material mixing unit, a feeding unit, a main reaction unit, a discharging unit, a stripping reaction column, a separation unit, and a purification unit. The method comprises an acid solution output step, a raw material mixing step, a feeding step, a hydrolysis reaction step, a discharging step, a stripping reaction step, a separation step, and a purification step. The present invention is a genuine continuous production system, which achieves continuous acquisition of products in terms of time, reduces labor intensity, and improves production efficiency. The whole process has a reasonable design, high furfural yields and low unit energy consumption.