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公开(公告)号:USRE45240E1
公开(公告)日:2014-11-11
申请号:US14085964
申请日:2013-11-21
Applicant: BASF SE
Inventor: Johann-Peter Melder , Gunther Van Cauwenberge , Tom Fremau , Jürgen Moors , Thilo Hahn , Bernd Stein
IPC: C07C209/84 , C07C209/86
CPC classification number: C07C213/10 , C07C215/12
Abstract: A process for preparing pure triethanolamine (TEOA) by continuously distillatively separating an ethanolamine mixture comprising TEOA and diethanolamine (DEOA), by distilling off DEOA in a distillation column (DEOA column) and supplying the resulting bottom stream comprising TEOA to a downstream column (TEOA column) in which the pure TEOA is withdrawn as a side draw stream, wherein the residence time of the ethanolamine mixture in the bottom of the DEOA column is
Abstract translation: 通过在蒸馏塔(DEOA柱)中蒸馏除去DEOA并将得到的包含TEOA的底部物流供应到下游塔(TEOA)中,通过连续蒸馏分离包含TEOA和二乙醇胺(DEOA)的乙醇胺混合物来制备纯三乙醇胺(TEOA) 柱),其中作为侧馏分流取出纯TEOA,其中乙醇胺混合物在DEOA塔底部的停留时间<20分钟。