Process and apparatus for drying a polymer

Process and apparatus for drying a polymer

  • CN 103,483,471 A
  • Filed: 12/12/2007
  • Published: 01/01/2014
  • Est. Priority Date: 12/29/2006
  • Status: Active Application
First Claim
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1. the method for the mode dry polymer by rare gas element, it comprises:

  • -there is the first kiln inner drying polymer beads of annular shape, wherein the first logistics by described rare gas element keeps polymer beads under fluidized state, the first logistics that is fed to the described rare gas element of described the first kiln is 70~

    95wt% of whole chargings of described rare gas element, 0.8~

    0.95 weight fraction of the whole water that exist remove described polymkeric substance in described the first kiln in;

    -further dried polymer pellets within comprising the secondary drying chamber of tubular body arranged inside, wherein polymer beads descends with plug flow, with the second logistics of described rare gas element, contacts;

    Dried polymkeric substance is discharged from the bottom, secondary drying chamber;

    The first logistics of wherein said rare gas element upwards flows, and cyclonic motion spirals, and to rise to described the first annular indoor;

    Wherein the mean residence time scope of polymkeric substance in described the first kiln is 1~

    6 minute, and wherein the mean residence time scope of polymkeric substance in described secondary drying chamber is 2~

    15 minutes.

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