会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明授权
    • 아민을 회수하기 위한 방법 및 장치
    • 아민을회수하기위한방법및장치
    • KR100351108B1
    • 2003-05-01
    • KR1019960706318
    • 1995-05-03
    • 에버하르트 기이벨러
    • 에버하르트기이벨러
    • C07C209/84
    • C07C209/84C07C209/86C07C211/05C07C211/08
    • PCT No. PCT/DE95/00595 Sec. 371 Date Jun. 10, 1996 Sec. 102(e) Date Jun. 10, 1996 PCT Filed May 3, 1995 PCT Pub. No. WO95/31430 PCT Pub. Date Nov. 23, 1995The invention relates to a process for recovering amines from acid amine salt solutions by the addition of bases and evaporating the solution at a pH of 11 to 13 in a kneading drier until a useful solid is obtained as the distillation residue and a device for separating sludges and suspensions into a solid and a plurality of liquid fractions separated according to their boiling point. The low-water-content amine phase separated out by distillation is dehydrated with calcium oxide or potassium hydroxide and then separated into pure amine fractions by rectification. The process described makes it possible to utilise all the secondary flows and completely recycle the amines and the absorption medium (sulphuric acid). The flows for the recycling process are amine-charged washing acids from absorbers obtained from the cleaning of amine-containing exhaust gases, produced for instance in the cold box process for hardening core sand in foundries.
    • PCT No.PCT / DE95 / 00595 Sec。 371日期1996年6月10日 102(e)日期1996年6月10日PCT申请日1995年5月3日PCT Pub。 WO95 / 31430 PCT Pub。 日期为1995年11月23日本发明涉及一种从酸胺盐溶液中回收胺的方法,通过加入碱并在pH值为11至13的条件下在捏合机中蒸发溶液直至获得有用的固体作为蒸馏残余物并且 用于将污泥和悬浮液分离成固体和多个根据其沸点分离的液体部分的装置。 通过蒸馏分离出的低含水量胺相用氧化钙或氢氧化钾脱水,然后通过精馏分离成纯胺馏分。 所描述的方法使得可以利用所有的二次流并且完全回收胺和吸收介质(硫酸)。 循环过程的流程是由清洁含胺废气获得的吸收剂带胺的冲洗酸,例如在冷箱工艺中生产,以硬化铸造厂的芯砂。