发明名称 |
Process for the crystallizing, drying and aftercondensation of polycondensates |
摘要 |
Described are a process and an apparatus for the aftercondensation of polycondensates, wherein moist and amorphous polymer in a granular or powderous form is continuously introduced from above into a single reactor. The granulate flows downward under gravity, with a hot gas being caused to flow in counter-current relation thereto. The reactor is formed as a continuous shaft or column which has positioned in the upper portion thereof an agitating element acting to prevent agglutination of the granulate. The granulate is crystallized and pre-dried in the upper portion of the shaft or column. In a further (subsequent) portion of the shaft or column, drying and aftercondensation take place without separation from the remainder of the shaft or column.
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申请公布号 |
US4584366(A) |
申请公布日期 |
1986.04.22 |
申请号 |
US19840683963 |
申请日期 |
1984.12.20 |
申请人 |
KARL FISCHER INDUSTRIEANLAGEN GMBH |
发明人 |
GERKING, LUEDER;TAURAT, DIETER O. |
分类号 |
B01J8/08;B29B13/00;B29B13/06;B29C71/00;C08G63/00;C08G63/78;C08G63/80;C08G69/00;C08G69/04;C08G69/46;(IPC1-7):C08G63/70;C08G63/74 |
主分类号 |
B01J8/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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