| 摘要 |
本发明系关于用于自制备聚醯胺的至少一种羧酸与至少一种二胺之缩合反应回收水的系统及方法。该方法可包括自蒸发器获得水性混合物，其包含部分聚合之聚醯胺及羧酸与二胺中至少一者；使该水性混合物通过管状反应器，包含使该水性混合物经受足以使该部分聚合之聚醯胺经该羧酸与二胺之缩合进一步聚合的温度及压力，藉此产生具有实质上气相之水；使该具有实质上气相之水通入精馏塔，藉此移除二胺、羧酸及聚醯胺中之一或多者，以提供具有实质上气相之纯化水；及将该具有实质上气相之纯化水冷凝成具有实质上液相之纯化水。该系统可尤其包括管状反应器、精馏塔、冷凝总成及管道网路。; passing the aqueous mixture through a tubular reactor comprising subjecting the aqueous mixture to a temperature and pressure sufficient to further polymerize the partially polymerized polyamide by condensation of the carboxylic acid and diamine, thereby producing water having a substantially gaseous phase; passing the water having a substantially gaseous phase into a rectification column thereby removing one or more of a diamine, a carboxylic acid and polyamide to provide purified water having a substantially gaseous phase; and condensing the purified water having a substantially gaseous phaseinto purified water having a substantially liquid phase. The system can include, among other things, a tubular reactor, a rectification column, a condensation assembly, and a conduit network. |
