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    4.
    发明专利
    未知

    公开(公告)号：DE1167021B

    公开(公告)日：1964-04-02

    申请号：DEV0022989

    申请日：1962-09-06

    Applicant: GLANZSTOFF AG

    Inventor： INDEST DR HEINZ

    IPC: B01J19/14 ,  B01J19/24 ,  C08G69/04 ,  C08G69/16

    Abstract: 987,963. Polycondensation reactors. VEREINIGTE GLANZSTOFF-FABRIKEN A.G. Sept. 6, 1963 [Sept. 6, 1962], No. 35394/63. Heading B1X. An apparatus for condensing polyamideforming compounds comprises a vertical vessel 1 which can be heated to different temperatures at different levels (by means of heating liquids in stages 2, 3 and 4), supply devices 8 for an inert steam-stripping gas extending from above to a lower, part of the vessel, a downwardlyfacing bell 5, gas discharge devices 10 in the upper, closed end of said bell and a ring 7 shaped to deflect gases into said bell. The numerals refer to the illustrated and preferred arrangement which also shows the presence of baffles 18 above and below the bell and an immersion device 15, by which the level of the polymer in the bell may be controlled, in communication with the bell via condenser 11 and separator 12. A U-tube 16 serves as a level indicator. By means of the apparatus, water formed in a later stage of polycondensation is stripped to improve this stage whilst avoiding dehydration in the upper part of the vessel where water is required, e.g. for the splitting of a caprolactam ring.

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