公开(公告)号：US08362313B2

公开(公告)日：2013-01-29

申请号：US12697927

申请日：2010-02-01

申请人： Zhong Yi Ding ,  Weihua Jin ,  Andrei Cimpeanu ,  Amy Sealey

发明人： Zhong Yi Ding ,  Weihua Jin ,  Andrei Cimpeanu ,  Amy Sealey

IPC分类号： C07C7/08

CPC分类号： B01D3/40 ,  C07C7/08 ,  C10G7/08 ,  C10G21/28 ,  C07C15/46

摘要： In various embodiments, the present disclosure describes processes and systems for recovery of styrene from a styrene-rich feedstock. The processes and systems maintain performance of an extractive solvent used in the styrene recovery. In general, the processes include introducing a styrene-rich feedstock to an extractive distillation column, removing a styrene-rich stream from the extractive distillation column, introducing the styrene-rich stream to a solvent recovery column, removing a styrene-lean stream from the solvent recovery column, separating and treating a portion of the styrene-lean stream to form a treated extractive solvent and recycling the treated extractive solvent. In some embodiments, the treating process also includes steam stripping. Styrene-recovery systems including an extractive distillation column, a solvent recovery column, a solvent treatment apparatus having at least one equilibrium stage and a continuous circulation loop connecting these components are also disclosed herein.

摘要翻译： 在各种实施方案中，本公开描述了从富含苯乙烯的原料中回收苯乙烯的方法和系统。 该方法和系统保持在苯乙烯回收中使用的萃取溶剂的性能。 通常，该方法包括将富含苯乙烯的原料引入萃取蒸馏塔，从萃取蒸馏塔除去富含苯乙烯的料流，将富含苯乙烯的料流引入溶剂回收塔，从 溶剂回收塔，分离和处理一部分贫苯乙烯流以形成经处理的萃取溶剂并循环处理的萃取溶剂。 在一些实施方案中，处理方法还包括蒸汽汽提。 本文还公开了包括萃取蒸馏塔，溶剂回收塔，具有至少一个平衡阶段的溶剂处理装置和连接这些组分的连续循环回路的苯乙烯回收系统。

公开(公告)号：US20110015460A1

公开(公告)日：2011-01-20

申请号：US12697927

申请日：2010-02-01

申请人： Zhongyi Ding ,  Weihua Jin ,  Andrei Cimpeanu ,  Amy Sealey

发明人： Zhongyi Ding ,  Weihua Jin ,  Andrei Cimpeanu ,  Amy Sealey

IPC分类号： C07C7/08 ,  B01D3/40

CPC分类号： B01D3/40 ,  C07C7/08 ,  C10G7/08 ,  C10G21/28 ,  C07C15/46

摘要： In various embodiments, the present disclosure describes processes and systems for recovery of styrene from a styrene-rich feedstock. The processes and systems maintain performance of an extractive solvent used in the styrene recovery. In general, the processes include introducing a styrene-rich feedstock to an extractive distillation column, removing a styrene-rich stream from the extractive distillation column, introducing the styrene-rich stream to a solvent recovery column, removing a styrene-lean stream from the solvent recovery column, separating and treating a portion of the styrene-lean stream to form a treated extractive solvent and recycling the treated extractive solvent. In some embodiments, the treating process also includes steam stripping. Styrene-recovery systems including an extractive distillation column, a solvent recovery column, a solvent treatment apparatus having at least one equilibrium stage and a continuous circulation loop connecting these components are also disclosed herein.

摘要翻译： 在各种实施方案中，本公开描述了从富含苯乙烯的原料中回收苯乙烯的方法和系统。 该方法和系统保持在苯乙烯回收中使用的萃取溶剂的性能。 通常，该方法包括将富含苯乙烯的原料引入萃取蒸馏塔，从萃取蒸馏塔除去富含苯乙烯的料流，将富含苯乙烯的料流引入溶剂回收塔，从 溶剂回收塔，分离和处理一部分贫苯乙烯流以形成经处理的萃取溶剂并循环处理的萃取溶剂。 在一些实施方案中，处理方法还包括蒸汽汽提。 本文还公开了包括萃取蒸馏塔，溶剂回收塔，具有至少一个平衡阶段的溶剂处理装置和连接这些组分的连续循环回路的苯乙烯回收系统。

公开(公告)号：US08771476B2

公开(公告)日：2014-07-08

申请号：US12705937

申请日：2010-02-15

申请人： Amy Sealey ,  George A. Ball ,  B. Bryant Slimp, Jr.

发明人： Amy Sealey ,  George A. Ball ,  B. Bryant Slimp, Jr.

IPC分类号： C07C7/20 ,  C07C7/08

CPC分类号： C07C7/08 ,  C07C7/20 ,  C07C15/46

摘要： High temperatures and oxygen exposure during extractive distillation can result in polymerization of vinyl aromatic compounds. In various embodiments, the present disclosure relates to methods for inhibiting polymerization of vinyl aromatic compounds during extractive distillation. In various embodiments, the methods include a) providing a mixture containing at least one vinyl aromatic compound, b) adding at least one dinitrophenol inhibitor to the mixture, and c) after step b), performing an extractive distillation on the mixture to isolate the at least one vinyl aromatic compound. Purified styrene can be isolated by the methods described herein. In some embodiments, the dinitrophenol inhibitor is 2-sec-butyl-4,6-dinitrophenol (DNBP).

摘要翻译： 萃取蒸馏期间的高温和氧气暴露可导致乙烯基芳族化合物的聚合。 在各种实施方案中，本公开涉及在萃取蒸馏期间抑制乙烯基芳族化合物聚合的方法。 在各种实施方案中，所述方法包括a）提供含有至少一种乙烯基芳族化合物的混合物，b）向混合物中加入至少一种二硝基苯酚抑制剂，和c）在步骤b）之后，对该混合物进行萃取蒸馏以分离 至少一种乙烯基芳族化合物。 纯化的苯乙烯可以通过本文所述的方法分离。 在一些实施方案中，二硝基苯酚抑制剂是2-仲丁基-4,6-二硝基苯酚（DNBP）。

公开(公告)号：US08361312B2

公开(公告)日：2013-01-29

申请号：US12706923

申请日：2010-02-17

申请人： Amy Sealey ,  Randi Wytcherley

发明人： Amy Sealey ,  Randi Wytcherley

IPC分类号： C07C7/12

CPC分类号： B01J20/28052 ,  B01J20/12 ,  B01J2220/603 ,  C10G25/003 ,  C10G25/12 ,  C10G2300/104 ,  C10G2300/1096 ,  C10G2300/201 ,  C10G2300/202 ,  C10G2400/02

摘要： In various embodiments, the present disclosure describes methods for removing impurities from a hydrocarbon stream containing at least one vinyl aromatic compound such as, for example, styrene. The methods include pretreating at least one sorbent to make the at least one sorbent operable for adsorbing the impurities, contacting the hydrocarbon stream with the at least one sorbent in order to adsorb at least a portion of the impurities and separating the hydrocarbon stream from the at least one sorbent. Impurities include, for example, colored impurities, sulfur-containing impurities and combinations thereof.

摘要翻译： 在各种实施方案中，本公开描述了从含有至少一种乙烯基芳族化合物例如苯乙烯的烃流中除去杂质的方法。 所述方法包括预处理至少一种吸附剂，以使至少一种吸附剂可操作以吸附杂质，使烃流与至少一种吸附剂接触，以便吸附至少一部分杂质，并将烃流与at 至少一种吸附剂。 杂质包括例如有色杂质，含硫杂质及其组合。

公开(公告)号：US20110015462A1

公开(公告)日：2011-01-20

申请号：US12705937

申请日：2010-02-15

申请人： Amy Sealey ,  George A. Ball ,  B. Bryant Slimp, JR.

发明人： Amy Sealey ,  George A. Ball ,  B. Bryant Slimp, JR.

IPC分类号： C07C7/08

CPC分类号： C07C7/08 ,  C07C7/20 ,  C07C15/46

摘要： High temperatures and oxygen exposure during extractive distillation can result in polymerization of vinyl aromatic compounds. In various embodiments, the present disclosure relates to methods for inhibiting polymerization of vinyl aromatic compounds during extractive distillation. In various embodiments, the methods include a) providing a mixture containing at least one vinyl aromatic compound, b) adding at least one dinitrophenol inhibitor to the mixture, and c) after step b), performing an extractive distillation on the mixture to isolate the at least one vinyl aromatic compound. Purified styrene can be isolated by the methods described herein. In some embodiments, the dinitrophenol inhibitor is 2-sec-butyl-4,6-dinitrophenol (DNBP).

摘要翻译： 萃取蒸馏期间的高温和氧气暴露可导致乙烯基芳族化合物的聚合。 在各种实施方案中，本公开涉及在萃取蒸馏期间抑制乙烯基芳族化合物聚合的方法。 在各种实施方案中，所述方法包括a）提供含有至少一种乙烯基芳族化合物的混合物，b）向混合物中加入至少一种二硝基苯酚抑制剂，和c）在步骤b）之后，对该混合物进行萃取蒸馏以分离 至少一种乙烯基芳族化合物。 纯化的苯乙烯可以通过本文所述的方法分离。 在一些实施方案中，二硝基苯酚抑制剂是2-仲丁基-4,6-二硝基苯酚（DNBP）。

公开(公告)号：US20110011770A1

公开(公告)日：2011-01-20

申请号：US12706923

申请日：2010-02-17

申请人： Amy Sealey ,  Randi Wytcherley

发明人： Amy Sealey ,  Randi Wytcherley

IPC分类号： C10G25/00

CPC分类号： B01J20/28052 ,  B01J20/12 ,  B01J2220/603 ,  C10G25/003 ,  C10G25/12 ,  C10G2300/104 ,  C10G2300/1096 ,  C10G2300/201 ,  C10G2300/202 ,  C10G2400/02

摘要： In various embodiments, the present disclosure describes methods for removing impurities from a hydrocarbon stream containing at least one vinyl aromatic compound such as, for example, styrene. The methods include pretreating at least one sorbent to make the at least one sorbent operable for adsorbing the impurities, contacting the hydrocarbon stream with the at least one sorbent in order to adsorb at least a portion of the impurities and separating the hydrocarbon stream from the at least one sorbent. Impurities include, for example, colored impurities, sulfur-containing impurities and combinations thereof.

摘要翻译： 在各种实施方案中，本公开描述了从含有至少一种乙烯基芳族化合物例如苯乙烯的烃流中除去杂质的方法。 所述方法包括预处理至少一种吸附剂，以使至少一种吸附剂可操作以吸附杂质，使烃流与至少一种吸附剂接触，以便吸附至少一部分杂质，并将烃流与at 至少一种吸附剂。 杂质包括例如有色杂质，含硫杂质及其组合。