摘要
反应器内装有两种不同类型的搅拌器——变径搅拌器和二叶倾斜式搅拌器。变径搅拌器的直径大小可根据不同的化学反应要求改变,使整个反应体系的浓度、温度均匀一致,且无死角。该设备特别适用于反应速度极快,有热效应和粘度变化范围大的反应体系。在应用于对苯二胺与对苯二甲酰氯缩聚反应中,取得很好的效果,其粘度(η_(inh))能达到5以上。同时,它还具有结构简单、操作灵活等优点。
The reactor is equipped with two different types of agitators:the diameter-variable agi-
tator and the two-pitched-paddle agitator.The diameter of the former can be varied accord-
ing to the requirement of the chemical reactions,thus making the concentration and tempera-
ture of the whole reaction system uniform throughout the reactor without any stagnant zone.
It is shown that the apparatus has the preponderance over conventional agitators,especially
when extremely rapid reactions are accompanied by large amount of reaction heat and when
the viscosity of the reaction systems varies in a wide range.The reactor is very effective when
applied to the polycondensation reaction between paraphenylene diamine(PPDA)and
terephthyl chloride(TPC).The inherent viscosity.(η_(inh))of the polymer comes up to more
than 5.This innovative agitator has the advantage of simplicity in structure and flexibility in
operation,etc.
出处
《中国纺织大学学报》
CSCD
1992年第1期63-69,共7页
Journal of China Textile University
关键词
缩聚
反应器
变径
搅拌器
对苯二胺
polycondensation
reactors
polyparaphenylene
terephalamide
diameter-variable
agitator
