公开(公告)号：US08704000B2

公开(公告)日：2014-04-22

申请号：US13322633

申请日：2010-05-27

申请人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Harunori Hirao ,  Satoshi Nakagawa

发明人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Harunori Hirao ,  Satoshi Nakagawa

IPC分类号： C07C51/43 ,  C07C51/50

CPC分类号： C07C51/43 ,  C07C57/04

摘要： PROBLEMThere is provided a melting method of (meth)acrylic acid crystal which is capable of providing a higher quality of (meth)acrylic acid without carrying out an additional purification treatment to (meth)acrylic acid obtained by a crystallization operation accompanied by melting of (meth)acrylic acid. In addition, there is provided a simple method for adjusting a content of polymerization inhibitor in a product (meth)acrylic acid.SOLUTIONIn the crystallization method melting (meth)acrylic acid crystal while wetting with the crystalline molten liquid, a polymerization inhibitor is added to a molten liquid melted after initiation of melting, and all of crystal is melted while circulating and feeding the molten liquid containing said polymerization inhibitor to the crystal. In addition, a content of polymerization inhibitor in product (meth)acrylic acid is adjusted by adding a predetermined amount of polymerization inhibitor corresponding to a product specification to the molten liquid melted after initiation of melting.

摘要翻译： 问题提供了（甲基）丙烯酸晶体的熔融方法，其能够提供更高质量的（甲基）丙烯酸，而不对通过伴随熔化的结晶操作获得的（甲基）丙烯酸进行额外的纯化处理 （甲基）丙烯酸。 此外，提供了调节产物（甲基）丙烯酸中阻聚剂含量的简单方法。 解决方案在熔融（甲基）丙烯酸晶体的结晶方法中，与结晶熔融液体一起润湿的同时，在熔融开始后熔化的熔融液中加入聚合抑制剂，并且在循环并将含有 阻聚剂结晶。 此外，通过向熔融开始熔融的熔融液中加入与产品规格相对应的规定量的聚合抑制剂来调节产品（甲基）丙烯酸中的聚合抑制剂的含量。

公开(公告)号：US20120071620A1

公开(公告)日：2012-03-22

申请号：US13322633

申请日：2010-05-27

申请人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Harunori Hirao ,  Satoshi Nakagawa

发明人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Harunori Hirao ,  Satoshi Nakagawa

IPC分类号： C08F120/06 ,  C07C51/50

CPC分类号： C07C51/43 ,  C07C57/04

摘要： PROBLEMThere is provided a melting method of (meth)acrylic acid crystal which is capable of providing a higher quality of (meth)acrylic acid without carrying out an additional purification treatment to (meth)acrylic acid obtained by a crystallization operation accompanied by melting of (meth)acrylic acid. In addition, there is provided a simple method for adjusting a content of polymerization inhibitor in a product (meth)acrylic acid.SOLUTIONIn the crystallization method melting (meth)acrylic acid crystal while wetting with the crystalline molten liquid, a polymerization inhibitor is added to a molten liquid melted after initiation of melting, and all of crystal is melted while circulating and feeding the molten liquid containing said polymerization inhibitor to the crystal. In addition, a content of polymerization inhibitor in product (meth)acrylic acid is adjusted by adding a predetermined amount of polymerization inhibitor corresponding to a product specification to the molten liquid melted after initiation of melting.

摘要翻译： 问题提供了（甲基）丙烯酸晶体的熔融方法，其能够提供更高质量的（甲基）丙烯酸，而不对通过伴随熔化的结晶操作获得的（甲基）丙烯酸进行额外的纯化处理 （甲基）丙烯酸。 此外，提供了调节产品（甲基）丙烯酸中阻聚剂含量的简单方法。 解决方案在熔融（甲基）丙烯酸晶体的结晶方法中，与结晶熔融液体一起润湿的同时，在熔融开始后熔化的熔融液中加入聚合抑制剂，并且在循环并将含有 阻聚剂结晶。 此外，通过向熔融开始熔融的熔融液中加入与产品规格相对应的规定量的聚合抑制剂来调节产品（甲基）丙烯酸中的聚合抑制剂的含量。

公开(公告)号：US08680331B2

公开(公告)日：2014-03-25

申请号：US13377273

申请日：2010-06-24

申请人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Satoshi Nakagawa

发明人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Satoshi Nakagawa

IPC分类号： C07C51/42

CPC分类号： B01D9/0013 ,  B01D9/004 ,  C07C51/43 ,  C07C57/04

摘要： The objective of the present invention is to provide a process for production of (meth)acrylic acid with improved production efficiency by efficiently shifting from heating procedure to cooling procedure for a crystallizer. A process for production of (meth)acrylic acid according to the present invention is characterized in comprising the steps of crystallizing (meth)acrylic acid from a crude (meth)acrylic acid solution by using a batch type crystallizer, and melting the obtained (meth)acrylic acid crystal to obtain a (meth)acrylic acid melted liquid; wherein preliminary cooling of the crystallizer for the next crystallization step is started during transferring the (meth)acrylic acid melted liquid from the crystallizer.

摘要翻译： 本发明的目的是提供一种生产效率高的（甲基）丙烯酸的方法，其有效地从加热步骤转移到结晶器的冷却过程。 本发明的（甲基）丙烯酸的制造方法的特征在于，通过使用间歇式结晶器，使粗（甲基）丙烯酸溶液结晶（甲基）丙烯酸，并使所得到的（甲基） ）丙烯酸晶体得到（甲基）丙烯酸熔融液体; 其中在从结晶器转移（甲基）丙烯酸熔融液体的过程中开始下一结晶步骤的结晶器的预冷。

公开(公告)号：US08680330B2

公开(公告)日：2014-03-25

申请号：US13147643

申请日：2010-01-29

申请人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Takashi Sugimoto ,  Masatsugu Kitaura ,  Satoshi Nakagawa ,  Kunihiko Suzuki

发明人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Takashi Sugimoto ,  Masatsugu Kitaura ,  Satoshi Nakagawa ,  Kunihiko Suzuki

IPC分类号： C07C51/42

CPC分类号： C07C51/43 ,  C07C57/04

摘要： A process for producing (meth)acrylic acid of the present invention comprises the steps in the following order: a crystallization step of supplying a cooling medium cooled by a heat source device to a crystallizer to obtain a (meth)acrylic acid crystal from a crude (meth)acrylic acid solution; an adjustment step of returning the cooling medium discharged from the crystallizer to the crystallizer without cooling; a sweating step of supplying a heating medium to the crystallizer to partially melt the (meth)acrylic acid crystal, thereby obtaining a melted liquid, and discharging the melted liquid from the crystallizer; and a melting step of supplying the heating medium to the crystallizer to melt the (meth)acrylic acid crystal, thereby obtaining purified (meth)acrylic acid. According to the present invention, purified (meth)acrylic acid with high purity can be obtained.

摘要翻译： 制备本发明的（甲基）丙烯酸的方法包括以下顺序的步骤：将由热源装置冷却的冷却介质供给结晶器的结晶步骤，从粗制得到（甲基）丙烯酸晶体 （甲基）丙烯酸溶液; 将结晶器排出的冷却介质返回到结晶器而不冷却的调整步骤; 向所述结晶器供给加热介质以部分熔融所述（甲基）丙烯酸晶体，从而获得熔融液体并从所述结晶器排出熔融液体的出汗步骤; 以及将加热介质供给结晶器以熔融（甲基）丙烯酸晶体，从而获得纯化的（甲基）丙烯酸的熔融步骤。 根据本发明，可以得到高纯度的（甲基）丙烯酸。

公开(公告)号：US20110319661A1

公开(公告)日：2011-12-29

申请号：US13147643

申请日：2010-01-29

申请人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Takashi Sugimoto ,  Masatsugu Kitaura ,  Satoshi Nakagawa ,  Kunihiko Suzuki

发明人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Takashi Sugimoto ,  Masatsugu Kitaura ,  Satoshi Nakagawa ,  Kunihiko Suzuki

IPC分类号： C07C51/43

CPC分类号： C07C51/43 ,  C07C57/04

摘要： A process for producing (meth)acrylic acid of the present invention comprises the steps in the following order: a crystallization step of supplying a cooling medium cooled by a heat source device to a crystallizer to obtain a (meth)acrylic acid crystal from a crude (meth)acrylic acid solution; an adjustment step of returning the cooling medium discharged from the crystallizer to the crystallizer without cooling; a sweating step of supplying a heating medium to the crystallizer to partially melt the (meth)acrylic acid crystal, thereby obtaining a melted liquid, and discharging the melted liquid from the crystallizer; and a melting step of supplying the heating medium to the crystallizer to melt the (meth)acrylic acid crystal, thereby obtaining purified (meth)acrylic acid. According to the present invention, purified (meth)acrylic acid with high purity can be obtained.

摘要翻译： 制备本发明的（甲基）丙烯酸的方法包括以下顺序的步骤：将由热源装置冷却的冷却介质供给结晶器的结晶步骤，从粗制得到（甲基）丙烯酸晶体 （甲基）丙烯酸溶液; 将结晶器排出的冷却介质返回结晶器而不冷却的调整步骤; 向所述结晶器供给加热介质以部分熔融所述（甲基）丙烯酸晶体，从而获得熔融液体并从所述结晶器排出熔融液体的出汗步骤; 以及将加热介质供给结晶器以熔融（甲基）丙烯酸晶体，从而获得纯化的（甲基）丙烯酸的熔融步骤。 根据本发明，可以得到高纯度的（甲基）丙烯酸。

公开(公告)号：US20120108857A1

公开(公告)日：2012-05-03

申请号：US13322967

申请日：2010-06-24

申请人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Masatsugu Kitaura

发明人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Masatsugu Kitaura

IPC分类号： C07C29/78 ,  B01D9/02

CPC分类号： B01D9/0013 ,  B01D9/004 ,  B01D9/0045 ,  C07C51/43 ,  C07C57/04

摘要： PROBLEMAn object of the present invention is to provide a crystallization unit capable of producing a purified acrylic acid having high purity efficiently.SOLUTIONThe present invention provides a crystallization unit to separate an acrylic acid-containing solution into a mother liquid and a purified acrylic acid, wherein the crystallization unit comprises a crystallizer having an exit to take out the mother liquid and the purified acrylic acid alternately; a supply line to supply the acrylic acid-containing solution to the crystallizer; and a recovery line to recover the mother liquid and the purified acrylic acid alternately from the crystallizer which is connected to the exit, and wherein the recovery line is equipped with an opening and closing unit consisting of a ball valve or a gate valve.

摘要翻译： 发明内容本发明的目的是提供一种能够有效地制备纯度高的纯化丙烯酸的结晶单元。 解决方案本发明提供一种结晶单元，用于将含丙烯酸的溶液分离成母液和纯化丙烯酸，其中结晶单元包括具有出口以交替地取出母液和纯化丙烯酸的结晶器; 用于向结晶器供应含丙烯酸的溶液的供应管线; 以及从与出口连接的结晶器交替地回收母液和纯化丙烯酸的回收管线，其中回收管线配备有由球阀或闸阀构成的开闭单元。

公开(公告)号：US08859809B2

公开(公告)日：2014-10-14

申请号：US13381449

申请日：2010-06-24

申请人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Masatsugu Kitaura

发明人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Masatsugu Kitaura

IPC分类号： C07C51/42 ,  B01D9/00 ,  C07C51/43

CPC分类号： B01D9/0013 ,  B01D9/0063 ,  C07C51/43 ,  C07C57/04

摘要： A crystallization device and a crystallization process are provided for obtaining (meth)acrylic acid with higher purity without causing leakage of a crude solution by preventing complete clogging in a crystallization tube from occurring. The device for crystallizing (meth)acrylic acid includes a crude (meth)acrylic acid solution supply part, a crystallization tube, a heat medium supply tube, a heat medium discharge tube, a storage part of a crude (meth)acrylic acid solution passed through the crystallization tube, a tube for circulating and supplying the crude (meth)acrylic acid solution to the supply part from the storage part, and a pump for circulating and supplying the crude (meth)acrylic acid solution to the supply part from the storage part, and also includes a pressure meter in the circulate-supply tube. The device is used for carrying out dynamic crystallization in a batch manner by circulating the crude (meth)acrylic acid solution to flow the crude solution downward along the inner wall of the crystallization tube in a coating film-like state.

摘要翻译： 提供了一种结晶装置和结晶方法，用于获得高纯度的（甲基）丙烯酸，而不会通过防止结晶管中发生完全堵塞而导致粗溶液泄漏。 用于结晶（甲基）丙烯酸的装置包括粗（甲基）丙烯酸溶液供应部分，结晶管，热介质供应管，热介质放电管，粗（甲基）丙烯酸溶液的储存部分通过 通过结晶管，将来自储存部的粗（甲基）丙烯酸溶液循环供给到供给部的管，以及从储存部向供给部循环供给粗（甲基）丙烯酸溶液的泵 并且还包括在循环供应管中的压力计。 该装置用于以分批方式进行动态结晶，通过循环粗制（甲基）丙烯酸溶液使涂料膜状态沿着结晶管的内壁向下流动粗溶液。

公开(公告)号：US20120083624A1

公开(公告)日：2012-04-05

申请号：US13377273

申请日：2010-06-24

申请人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Nakagawa Satoshi

发明人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Nakagawa Satoshi

IPC分类号： C07C51/43

CPC分类号： B01D9/0013 ,  B01D9/004 ,  C07C51/43 ,  C07C57/04

摘要： The objective of the present invention is to provide a process for production of (meth)acrylic acid with improved production efficiency by efficiently shifting from heating procedure to cooling procedure for a crystallizer. A process for production of (meth)acrylic acid according to the present invention is characterized in comprising the steps of crystallizing (meth)acrylic acid from a crude (meth)acrylic acid solution by using a batch type crystallizer, and melting the obtained (meth)acrylic acid crystal to obtain a (meth)acrylic acid melted liquid; wherein preliminary cooling of the crystallizer for the next crystallization step is started during transferring the (meth)acrylic acid melted liquid from the crystallizer.

摘要翻译： 本发明的目的是提供一种生产效率高的（甲基）丙烯酸的方法，其有效地从加热步骤转移到结晶器的冷却过程。 本发明的（甲基）丙烯酸的制造方法的特征在于，通过使用间歇式结晶器，使粗（甲基）丙烯酸溶液结晶（甲基）丙烯酸，并使所得到的（甲基） ）丙烯酸晶体得到（甲基）丙烯酸熔融液体; 其中在从结晶器转移（甲基）丙烯酸熔融液体的过程中开始下一结晶步骤的结晶器的预冷。

公开(公告)号：US20120108847A1

公开(公告)日：2012-05-03

申请号：US13381449

申请日：2010-06-24

申请人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Masatsugu Kitaura

发明人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Masatsugu Kitaura

IPC分类号： C07C51/43 ,  B01J19/00

CPC分类号： B01D9/0013 ,  B01D9/0063 ,  C07C51/43 ,  C07C57/04

摘要： The objective of the present invention is to provide a crystallization device and a crystallization process for obtaining (meth)acrylic acid with higher purity without causing leakage of a crude solution by preventing complete clogging in a crystallization tube from occurring. The device for crystallizing (meth)acrylic acid according to the present invention is characterized in comprising a crude (meth)acrylic acid solution supply part, a crystallization tube, a heat medium supply tube, a heat medium discharge tube, a storage part of a crude (meth)acrylic acid solution passed through the crystallization tube, a tube for circulating and supplying the crude (meth)acrylic acid solution to the supply part from the storage part, and a pump for circulating and supplying the crude (meth)acrylic acid solution to the supply part from the storage part; and further comprising a pressure meter in the circulate-supply tube; wherein the device is used for carrying out dynamic crystallization in a batch manner by circulating the crude (meth)acrylic acid solution to flow the crude solution downward along the inner wall of the crystallization tube in a coating film-like state.

摘要翻译： 本发明的目的是提供一种结晶装置和结晶方法，用于通过防止结晶管中发生完全堵塞而获得更高纯度的（甲基）丙烯酸，而不会导致粗溶液泄漏。 根据本发明的用于结晶（甲基）丙烯酸的装置的特征在于包含粗（甲基）丙烯酸溶液供应部分，结晶管，热介质供给管，热介质放电管， 粗（甲基）丙烯酸溶液通过结晶管，将来自储存部分的粗（甲基）丙烯酸溶液循环供给到供应部分的管和用于循环供给粗（甲基）丙烯酸 从储存部分解决供应部件; 并且还包括在所述循环供应管中的压力计; 其中所述装置用于通过循环粗制（甲基）丙烯酸溶液以使涂层膜状状态沿着结晶管的内壁向下流动的方式以间歇方式进行动态结晶。

公开(公告)号：US08846977B2

公开(公告)日：2014-09-30

申请号：US13322967

申请日：2010-06-24

申请人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Masatsugu Kitaura

发明人： Kazuhiko Sakamoto ,  Koji Ueno ,  Yoshitake Ishii ,  Masatsugu Kitaura

IPC分类号： C07C51/42 ,  C07C51/43 ,  B01D9/00

CPC分类号： B01D9/0013 ,  B01D9/004 ,  B01D9/0045 ,  C07C51/43 ,  C07C57/04

摘要： PROBLEMAn object of the present invention is to provide a crystallization unit capable of producing a purified acrylic acid having high purity efficiently.SOLUTIONThe present invention provides a crystallization unit to separate an acrylic acid-containing solution into a mother liquid and a purified acrylic acid, wherein the crystallization unit comprises a crystallizer having an exit to take out the mother liquid and the purified acrylic acid alternately; a supply line to supply the acrylic acid-containing solution to the crystallizer; and a recovery line to recover the mother liquid and the purified acrylic acid alternately from the crystallizer which is connected to the exit, and wherein the recovery line is equipped with an opening and closing unit consisting of a ball valve or a gate valve.

摘要翻译： 发明内容本发明的目的是提供一种能够有效地制备纯度高的纯化丙烯酸的结晶单元。 解决方案本发明提供一种结晶单元，用于将含丙烯酸的溶液分离成母液和纯化丙烯酸，其中结晶单元包括具有出口以交替地取出母液和纯化丙烯酸的结晶器; 用于向结晶器供应含丙烯酸的溶液的供应管线; 以及从与出口连接的结晶器交替地回收母液和纯化丙烯酸的回收管线，其中回收管线配备有由球阀或闸阀构成的开闭单元。