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公开(公告)号：US07718841B2
公开(公告)日：2010-05-18
申请号：US12157300
申请日：2008-06-09
摘要： A method for reducing corrosion in a diolefin extractive distillation process comprising preventing the formation of ammonium carbonate by promoting the formation of a carbonate salt that does not dissociate in the ammonium carbonate dissociation temperature range of that extractive distillation process.
摘要翻译： 一种用于减少二烯萃取蒸馏方法中的腐蚀的方法，包括通过促进在该萃取蒸馏过程的碳酸铵解离温度范围内不解离的碳酸盐的形成来防止形成碳酸铵。
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公开(公告)号：US20100298621A1
公开(公告)日：2010-11-25
申请号：US12454778
申请日：2009-05-22
IPC分类号： C07C7/04
CPC分类号： C07C11/167 , C07C7/005 , C07C7/08
摘要： A method for the solvent extraction of 1,3-butadiene from a mixture of C4 hydrocarbons that employs a distillation tower to produce the desired 1,3-butadiene product as an overhead and a separate bottoms stream that is removed from and not recycled in the solvent extraction process.
摘要翻译： 从使用蒸馏塔产生所需的1,3-丁二烯产物作为塔顶馏出物的C4烃的混合物溶剂萃取1,3-丁二烯的方法，以及分离的底部物流，其从 溶剂萃取工艺。
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公开(公告)号：US20090306450A1
公开(公告)日：2009-12-10
申请号：US12157300
申请日：2008-06-09
IPC分类号： C07C7/00
摘要： A method for reducing corrosion in a diolefin extractive distillation process comprising preventing the formation of ammonium carbonate by promoting the formation of a carbonate salt that does not dissociate in the ammonium carbonate dissociation temperature range of that extractive distillation process.
摘要翻译： 一种用于减少二烯萃取蒸馏方法中的腐蚀的方法，包括通过促进在该萃取蒸馏过程的碳酸铵解离温度范围内不解离的碳酸盐的形成来防止形成碳酸铵。
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公开(公告)号：US07348466B2
公开(公告)日：2008-03-25
申请号：US11104990
申请日：2005-04-13
CPC分类号： C07C7/08 , C07C11/167
摘要： In a method for the solvent extraction of butadiene from a mixture of hydrocarbons having four carbon atoms per molecule, which method inherently produces tars, the extraction process is operated with a tar loading level, relative to the solvent employed, of no more than about 1.6 wt. %.
摘要翻译： 在从每分子具有四个碳原子的烃的混合物中溶剂萃取丁二烯的方法中，该方法固有地产生焦油，萃取过程以相对于所用溶剂的焦油负载水平为不超过约1.6 重量 ％。
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公开(公告)号：US08222474B2
公开(公告)日：2012-07-17
申请号：US12454778
申请日：2009-05-22
IPC分类号： C07C7/04
CPC分类号： C07C11/167 , C07C7/005 , C07C7/08
摘要： A method for the solvent extraction of 1,3-butadiene from a mixture of C4 hydrocarbons that employs a distillation tower to produce the desired 1,3-butadiene product as an overhead and a separate bottoms stream that is removed from and not recycled in the solvent extraction process.
摘要翻译： 从使用蒸馏塔产生所需的1,3-丁二烯产物作为塔顶馏出物的C4烃的混合物溶剂萃取1,3-丁二烯的方法，以及分离的底部物流，其从 溶剂萃取工艺。
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公开(公告)号：US07326823B2
公开(公告)日：2008-02-05
申请号：US11044128
申请日：2005-01-27
申请人： Solon B. Williams , Reynaldo E. Vera , Robert W. Whitmire , Paul A. Barnard , Brian J. Narowski
发明人： Solon B. Williams , Reynaldo E. Vera , Robert W. Whitmire , Paul A. Barnard , Brian J. Narowski
CPC分类号： C07C7/10 , Y10S585/956 , C07C15/00
摘要： A method for the solvent extraction recovery of an aromatic wherein an aromatic extract is formed that contains the aromatic and non-aromatics that are both lighter than and heavier than the aromatic, analyzing at least two separate groups of lighter and heavier non-aromatics in the extract, determining from the analyses the distribution of lighter and heavier non-aromatics present and whether the aromatic product that will be recovered from the process will be too far from its predetermined maximum non-aromatic content specification, and making process changes that will cause the process to produce the aromatic product with a non-aromatic content that is closer to its predetermined maximum non-aromatic content specification.
摘要翻译： 芳族溶剂萃取回收方法，其中形成芳香族提取物，其含有比芳香族轻和重的芳香族和非芳族化合物，分析了至少两种分开的较轻和较重的非芳族化合物 提取，从分析中确定更轻和更重的非芳族化合物的分布，以及将从该方法中回收的芳族产物是否将远离其预定的最大非芳族含量规格，并且使得过程变化将导致 制备具有更接近其预定的最大非芳族含量规格的非芳族含量的芳香族产物的方法。
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