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公开(公告)号：US20080039659A1
公开(公告)日：2008-02-14
申请号：US11463182
申请日：2006-08-08
IPC分类号： C07C209/62
CPC分类号： C07C213/10 , C07C213/02 , C07C215/12
摘要： There is provided a regeneration process for converting oxazolidones such as hydroxypropyloxazolidone (HPOZD) to alkanolamines such as di-isopropanolamine (DIPA) and CO2. An amine stream containing HPOZD joins a stream that includes a caustic solution. The combined stream is passed to a tank where the caustic reacts with HPOZD to convert it to DIPA and CO2. The conversion of HPOZD to DIPA and CO2 requires a ratio of at least 2 moles of hydroxide for each mole of HPOZD in the solution. The conversion reaction is carried out in a reaction vessel at a temperature above 60° C. The reaction mixture is held in a feed tank for approximately 2 hours while being constantly mixed. After the reaction is completed, the mixture is allowed to settle which results in the virtually complete separation of the amine phase (containing DIPA, and water) from the caustic phase. After an appropriate settling interval, a portion of the caustic phase is drawn from the reaction mixture as a waste/neutralization stream while the other portion of the caustic phase and a very small portion of the amine phase may be sent to a recycle tank for use in subsequent reaction steps. The majority of the amine phase is treated using ion exchange resins to remove excess cations from the amine and clean amine is returned to the amine system.
摘要翻译： 提供了将恶唑烷酮如羟丙基恶唑烷酮（HPOZD）转化为链烷醇胺如二异丙醇胺（DIPA）和CO 2 2的再生方法。 含有HPOZD的胺流连接包含苛性碱溶液的流。 将合并的流送入罐中，其中苛性碱与HPOZD反应以将其转化为DIPA和CO 2。 HPOZD转化为DIPA和CO 2需要在溶液中每摩尔HPOZD至少2摩尔氢氧化物的比例。 转化反应在高于60℃的温度下在反应容器中进行。将反应混合物在不断混合的同时在进料罐中保持约2小时。 反应完成后，使混合物沉降，导致胺相（含有DIPA和水）几乎完全从苛性相分离。 在适当的沉降间隔后，一部分苛性相作为废物/中和流从反应混合物中抽出，而碱相的另一部分和胺相的一小部分可以送到循环罐中使用 在随后的反应步骤中。 使用离子交换树脂处理大部分胺相以从胺中除去过量的阳离子，并将清洁的胺返回到胺体系中。
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公开(公告)号：US07323600B1
公开(公告)日：2008-01-29
申请号：US11463182
申请日：2006-08-08
IPC分类号： C07C209/84 , C07C209/86
CPC分类号： C07C213/10 , C07C213/02 , C07C215/12
摘要： There is provided a regeneration process for converting oxazolidones such as hydroxypropyloxazolidone (HPOZD) to alkanolamines such as di-isopropanolamine (DIPA) and CO2. An amine stream containing HPOZD joins a stream that includes a caustic solution. The combined stream is passed to a tank where the caustic reacts with HPOZD to convert it to DIPA and CO2. The conversion of HPOZD to DIPA and CO2 requires a ratio of at least 2 moles of hydroxide for each mole of HPOZD in the solution. The conversion reaction is carried out in a reaction vessel at a temperature above 60° C. The reaction mixture is held in a feed tank for approximately 2 hours while being constantly mixed. After the reaction is completed, the mixture is allowed to settle which results in the virtually complete separation of the amine phase (containing DIPA, and water) from the caustic phase. After an appropriate settling interval, a portion of the caustic phase is drawn from the reaction mixture as a waste/neutralization stream while the other portion of the caustic phase and a very small portion of the amine phase may be sent to a recycle tank for use in subsequent reaction steps. The majority of the amine phase is treated using ion exchange resins to remove excess cations from the amine and clean amine is returned to the amine system.
摘要翻译： 提供了将恶唑烷酮如羟丙基恶唑烷酮（HPOZD）转化为链烷醇胺如二异丙醇胺（DIPA）和CO 2 2的再生方法。 含有HPOZD的胺流连接包含苛性碱溶液的流。 将合并的流送入罐中，其中苛性碱与HPOZD反应以将其转化为DIPA和CO 2。 HPOZD转化为DIPA和CO 2需要在溶液中每摩尔HPOZD至少2摩尔氢氧化物的比例。 转化反应在高于60℃的温度下在反应容器中进行。将反应混合物在不断混合的同时在进料罐中保持约2小时。 反应完成后，使混合物沉降，导致胺相（含有DIPA和水）几乎完全从苛性相分离。 在适当的沉降间隔后，一部分苛性相作为废物/中和流从反应混合物中抽出，而碱相的另一部分和胺相的一小部分可以送到循环罐中使用 在随后的反应步骤中。 使用离子交换树脂处理大部分胺相以从胺中除去过量的阳离子，并将清洁的胺返回到胺体系中。
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