公开(公告)号：US07189872B2

公开(公告)日：2007-03-13

申请号：US10864498

申请日：2004-06-10

申请人： Shuhei Yada ,  Kiyoshi Takahashi ,  Kenji Takasaki ,  Yasushi Ogawa ,  Kimikatsu Jinno ,  Yoshiro Suzuki

发明人： Shuhei Yada ,  Kiyoshi Takahashi ,  Kenji Takasaki ,  Yasushi Ogawa ,  Kimikatsu Jinno ,  Yoshiro Suzuki

IPC分类号： C07C51/16 ,  C07C51/42

CPC分类号： B01D3/146 ,  C07C51/44 ,  C07C57/04

摘要： Clogging of a distillation column by polymerization caused by a change of the production rate of (meth)acrylic acid, is prevented to carry out a stabilized operation over a long period. A process for producing (meth)acrylic acid, which includes a purification step wherein a (meth)acrylic acid-containing material to be purified is supplied to and distilled by a distillation column, wherein during a cut operation in which the production rate of (meth)acrylic acid is reduced by α% relative to the production rate of (meth)acrylic acid during the ordinary operation, the liquid/gas flow rate in the distillation column is adjusted to be at least (100−α/2)% of the liquid/gas flow rate during the ordinary operation.

摘要翻译： 通过由（甲基）丙烯酸的生成速度的变化引起的聚合引起的蒸馏塔的堵塞被阻止长期进行稳定化的操作。 一种制备（甲基）丙烯酸的方法，其包括纯化步骤，其中将要纯化的（甲基）丙烯酸的物质供应到蒸馏塔并蒸馏，其中在其中生产速率（ 甲基）丙烯酸在常规操作中相对于（甲基）丙烯酸的生产速率降低α％，将蒸馏塔中的液/气流量调节至至少（100-α/ 2）％ 在普通操作期间的液/气流量。

公开(公告)号：US07368601B2

公开(公告)日：2008-05-06

申请号：US11526730

申请日：2006-09-26

申请人： Shuhei Yada ,  Yasushi Ogawa ,  Yoshiro Suzuki ,  Kimikatsu Jinno ,  Hirochika Hosaka ,  Kenji Takasaki ,  Masayasu Goriki

发明人： Shuhei Yada ,  Yasushi Ogawa ,  Yoshiro Suzuki ,  Kimikatsu Jinno ,  Hirochika Hosaka ,  Kenji Takasaki ,  Masayasu Goriki

IPC分类号： C07C51/42

CPC分类号： C07C51/44 ,  B01D3/14 ,  B01D3/146 ,  B01D3/42 ,  B01D3/4211 ,  C07C67/54 ,  C07C57/04 ,  C07C69/54

摘要： In the stopping and starting operations of a distillation column used for producing (meth)acrylic acids according to the present invention, upon stopping the operation of the distillation column, the heating of a reboiler attached thereto is interrupted and then the reboiler is rapidly cooled; and/or upon starting the operation of the distillation column for production of the (meth)acrylic acids, an inner wall surface of the distillation column is heated to a temperature higher than a condensation temperature of the (meth)acrylic acids and the operation of the distillation column is started under the heated condition. According to the present invention, it is possible to early and safely stop the operation of the distillation column while preventing the occurrence of polymerization within the distillation column, and stably perform an operation for distillation of acrylic monomers for a long period of time.

摘要翻译： 在根据本发明的用于生产（甲基）丙烯酸的蒸馏塔的停止和开始操作中，停止蒸馏塔的操作后，连接的再沸器的加热被中断，然后再沸器被快速冷却; 和/或在开始用于生产（甲基）丙烯酸的蒸馏塔的操作时，将蒸馏塔的内壁表面加热到高于（甲基）丙烯酸的冷凝温度的温度和 蒸馏塔在加热条件下启动。 根据本发明，能够在避免蒸馏塔内发生聚合的同时，早日安全地停止蒸馏塔的运转，并且能够长时间稳定地进行丙烯酸类单体的蒸馏操作。

公开(公告)号：US20080228001A1

公开(公告)日：2008-09-18

申请号：US11597365

申请日：2004-11-05

申请人： Yasushi Ogawa ,  Shuhei Yada ,  Yoshiro Suzuki ,  Kenji Takasaki ,  Kimikatsu Jinno

发明人： Yasushi Ogawa ,  Shuhei Yada ,  Yoshiro Suzuki ,  Kenji Takasaki ,  Kimikatsu Jinno

IPC分类号： C07C27/12 ,  C07C47/22

CPC分类号： B01J23/8876 ,  B01J23/002 ,  B01J2523/00 ,  C07C45/33 ,  C07C45/35 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04 ,  B01J2523/12 ,  B01J2523/13 ,  B01J2523/22 ,  B01J2523/305 ,  B01J2523/41 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/847

摘要： An object of the present invention is to provide a method for producing (meth)acrylic acid or (meth)acrolein by conducting a gas phase catalytic oxidation reaction with an oxygen-containing gas using as a raw material at least one substance to be oxidized selected from propylene, propane, isobutylene and (meth)acrolein using a multi-tubular reactor, which enables a high yield and stable production even when operating constantly with supplying the raw material in the maximum supply amount acceptable by the reactor or an amount close thereto.The invention is a method for producing (meth)acrylic acid or (meth)acrolein wherein, at the time of a start-up of the reaction, for a period of at least 20 hours or more after the supply amount of the raw material to the reactor per unit time reached 30% or more of the acceptable maximum supply amount of the raw material per unit time, the supply amount of the raw material per unit time is kept at 30% or more and less than 80% of the acceptable maximum supply amount.

摘要翻译： 本发明的目的是提供一种通过与含氧气体进行气相催化氧化反应来生产（甲基）丙烯酸或（甲基）丙烯醛的方法，该方法使用至少一种待氧化物质作为原料 使用多管式反应器由丙烯，丙烷，异丁烯和（甲基）丙烯醛组成，即使在以反应器可接受的最大供给量或其附近的量供给原料的情况下，也可以连续运转，能够实现高产率和稳定的生产。 本发明是一种生产（甲基）丙烯酸或（甲基）丙烯醛的方法，其中在反应开始时至少20小时以上，在原料供给量至 每单位时间的反应器达到每单位时间内可接受的原料最大供应量的30％以上，每单位时间的原料供应量保持在可接受最大值的30％以上且小于80％ 供应量

公开(公告)号：US07396957B2

公开(公告)日：2008-07-08

申请号：US10817955

申请日：2004-04-06

申请人： Shuhei Yada ,  Yasushi Ogawa ,  Yoshiro Suzuki ,  Kimikatsu Jinno ,  Hirochika Hosaka ,  Kenji Takasaki ,  Masayasu Goriki

发明人： Shuhei Yada ,  Yasushi Ogawa ,  Yoshiro Suzuki ,  Kimikatsu Jinno ,  Hirochika Hosaka ,  Kenji Takasaki ,  Masayasu Goriki

IPC分类号： C07C43/32

CPC分类号： C07C51/44 ,  B01D3/14 ,  B01D3/146 ,  B01D3/42 ,  B01D3/4211 ,  C07C67/54 ,  C07C57/04 ,  C07C69/54

摘要： In the stopping and starting operations of a distillation column used for producing (meth)acrylic acids according to the present invention, upon stopping the operation of the distillation column, the heating of a reboiler attached thereto is interrupted and then the reboiler is rapidly cooled; and/or upon starting the operation of the distillation column for production of the (meth)acrylic acids, an inner wall surface of the distillation column is heated to a temperature higher than a condensation temperature of the (meth)acrylic acids and the operation of the distillation column is started under the heated condition. According to the present invention, it is possible to early and safely stop the operation of the distillation column while preventing the occurrence of polymerization within the distillation column, and stably perform an operation for distillation of acrylic monomers for a long period of time.

公开(公告)号：US20080014127A1

公开(公告)日：2008-01-17

申请号：US11596293

申请日：2004-10-25

申请人： Yasushi Ogawa ,  Shuhei Yada ,  Yoshiro Suzuki ,  Kenji Takasaki ,  Kimikatsu Jinno

发明人： Yasushi Ogawa ,  Shuhei Yada ,  Yoshiro Suzuki ,  Kenji Takasaki ,  Kimikatsu Jinno

IPC分类号： B01J19/00

CPC分类号： B01J23/8876 ,  B01J8/067 ,  B01J23/002 ,  B01J23/887 ,  B01J23/8885 ,  B01J23/8892 ,  B01J2208/00026 ,  B01J2208/00061 ,  B01J2208/00212 ,  B01J2208/00221 ,  B01J2208/00539 ,  B01J2219/00009 ,  B01J2219/002 ,  B01J2219/00202 ,  B01J2219/00218 ,  B01J2219/00234 ,  B01J2219/00238 ,  B01J2523/00 ,  C07C45/33 ,  C07C45/35 ,  C07C51/215 ,  C07C51/252 ,  C07C47/21 ,  C07C47/22 ,  C07C57/04 ,  B01J2523/12 ,  B01J2523/13 ,  B01J2523/22 ,  B01J2523/30 ,  B01J2523/41 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/847

摘要： An object of the present invention is to provide a pilot test method for suitably setting the reaction conditions for a gas-phase catalytic reaction using a multi-tube reactor, and an apparatus thereof. The present invention is a pilot test method in which a plurality of reaction tubes which are substantially the same as a reaction tube of a multi-tube rector and composed of at least one reaction tube having a means provided for measuring the temperature of a catalyst layer, and remaining reaction tubes having no temperature measuring means, are immersed in a heat medium, a given raw material gas is allowed to flow through the reaction tubes to react, the temperature of the catalyst layer is measured at this stage, the reaction result of the reaction product gas to be discharged is analyzed in the reaction tube having no temperature measuring means, and the reaction conditions of the multi-tube reactor are set so that the reaction at the temperature of the catalyst layer measured generates the reaction result analyzed.

摘要翻译： 本发明的目的是提供一种使用多管反应器适当地设定气相催化反应的反应条件的试验方法及其装置。 本发明是一种先导试验方法，其中多个反应管与多管反应器的反应管基本相同，并且由至少一个具有用于测量催化剂层的温度的装置的反应管组成 ，将没有温度测量装置的剩余反应管浸入热介质中，使给定的原料气体流过反应管进行反应，在此阶段测量催化剂层的温度， 在没有温度测量装置的反应管中分析要排出的反应产物气体，并且设定多管反应器的反应条件，使得测量的催化剂层的温度下的反应产生分析的反应结果。

公开(公告)号：US07563927B2

公开(公告)日：2009-07-21

申请号：US11547004

申请日：2004-10-27

申请人： Yasushi Ogawa ,  Shuhei Yada ,  Yoshiro Suzuki ,  Kenji Takasaki ,  Kimikatsu Jinno

发明人： Yasushi Ogawa ,  Shuhei Yada ,  Yoshiro Suzuki ,  Kenji Takasaki ,  Kimikatsu Jinno

IPC分类号： C07C51/16

CPC分类号： C07C45/35 ,  C07C51/215 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04

摘要： A producing method of (meth)acrolein or (meth)acrylic acid where by use of a multi-tubular reactor that has a plurality of reaction tubes filled with a catalyst, catalytic gas phase oxidation of propylene, propane, isobutylene or (meth)acrolein is carried out in the presence of a composite oxide catalyst by use of molecular oxygen or a gas containing molecular oxygen, in which method (meth)acrolein or (meth)acrylic acid can be obtained stably in high yield for a long period of time without allowing the activity of the catalyst to decrease locally (disproportionately) and extremely. A temperature difference between a temperature of a heat medium at the beginning of operation and a peak temperature of the catalyst is set in a range of 20 to 80° C., and during operations a change of the peak temperature T of the catalyst in a tube axis direction is maintained in a definite range.

摘要翻译： （甲基）丙烯醛或（甲基）丙烯酸的制备方法，其中通过使用多管反应器，其具有填充有催化剂的多个反应管，丙烯，丙烷，异丁烯或（甲基）丙烯醛的催化气相氧化 通过使用分子氧或含分子氧的气体在复合氧化物催化剂存在下进行，其中可以以高产率长时间稳定地获得（甲基）丙烯醛或（甲基）丙烯酸，而不用 允许催化剂的活性局部（不成比例地）减少和极度降低。 操作开始时的热介质的温度与催化剂的峰值温度之间的温差设定在20〜80℃的范围内，在操作中，催化剂的峰值温度T的变化为 管轴方向保持在一定范围内。

公开(公告)号：US07549341B2

公开(公告)日：2009-06-23

申请号：US11597939

申请日：2004-10-25

申请人： Yasushi Ogawa ,  Shuhei Yada ,  Yoshiro Suzuki ,  Kenji Takasaki ,  Kimikatsu Jinno

发明人： Yasushi Ogawa ,  Shuhei Yada ,  Yoshiro Suzuki ,  Kenji Takasaki ,  Kimikatsu Jinno

IPC分类号： G01L13/00

CPC分类号： C07C45/35 ,  B01J8/06 ,  B01J2208/00539 ,  B01J2208/00654 ,  B01J2208/00734 ,  B01J2208/00982 ,  B01J2208/021 ,  B01J2219/002 ,  B01J2219/00213 ,  B01J2219/00225 ,  B01J2219/0024 ,  B01J2219/00268 ,  C07C51/00 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04

摘要： The object of this invention is to provide a method of maintaining a multi-tubular reactor which can ensure the uniformity of states of reaction in the reaction tubes in the multi-tubular reactor.This invention is a method of maintaining a multi-tubular reactor in good condition by selecting a part of reaction tubes in a multi-tubular reactor at random, measuring a differential pressure occurring in each reaction tube when passing gas therethrough, separating any reaction tube showing an abnormal differential pressure as compared with the average of differential pressures in reaction tubes packed with an fresh catalyst of the same kind, giving adequate treatment to the separated reaction tube and returning it into the reactor with any other selected reaction tube falling within a normal range.

摘要翻译： 本发明的目的是提供一种维持多管式反应器的方法，其可以确保多管式反应器中的反应管中的反应状态的均匀性。 本发明是通过在多管式反应器中随机选择反应管的一部分来测量在每个反应管中产生的差压，使气体通过其中的压差，分离任何反应管，显示出多个反应管，从而维持多管式反应器处于良好状态的方法 与装有相同种类的新鲜催化剂的反应管中的压差的平均值相比，产生异常压差，给分离的反应管提供足够的处理并将其返回到反应器中，任何其它选择的反应管落在正常范围内 。

公开(公告)号：US20070256921A1

公开(公告)日：2007-11-08

申请号：US11812716

申请日：2007-06-21

申请人： Shuhei Yada ,  Yasushi Ogawa ,  Yoshiro Suzuki ,  Kimikatsu Jinno ,  Hirochika Hosaka ,  Kenji Takasaki ,  Masayasu Goriki

发明人： Shuhei Yada ,  Yasushi Ogawa ,  Yoshiro Suzuki ,  Kimikatsu Jinno ,  Hirochika Hosaka ,  Kenji Takasaki ,  Masayasu Goriki

IPC分类号： B01D3/00

CPC分类号： C07C51/44 ,  B01D3/14 ,  B01D3/146 ,  B01D3/42 ,  B01D3/4211 ,  C07C67/54 ,  C07C57/04 ,  C07C69/54

摘要： In the stopping and starting operations of a distillation column used for producing (meth)acrylic acids according to the present invention, upon stopping the operation of the distillation column, the heating of a reboiler attached thereto is interrupted and then the reboiler is rapidly cooled; and/or upon starting the operation of the distillation column for production of the (meth)acrylic acids, an inner wall surface of the distillation column is heated to a temperature higher than a condensation temperature of the (meth)acrylic acids and the operation of the distillation column is started under the heated condition. According to the present invention, it is possible to early and safely stop the operation of the distillation column while preventing the occurrence of polymerization within the distillation column, and stably perform an operation for distillation of acrylic monomers for a long period of time.

摘要翻译： 在根据本发明的用于生产（甲基）丙烯酸的蒸馏塔的停止和开始操作中，停止蒸馏塔的操作后，连接的再沸器的加热被中断，然后再沸器被快速冷却; 和/或在开始用于生产（甲基）丙烯酸的蒸馏塔的操作时，将蒸馏塔的内壁表面加热到高于（甲基）丙烯酸的冷凝温度的温度和 蒸馏塔在加热条件下启动。 根据本发明，能够在避免蒸馏塔内发生聚合的同时，早日安全地停止蒸馏塔的运转，并且能够长时间稳定地进行丙烯酸类单体的蒸馏操作。

公开(公告)号：US20070021633A1

公开(公告)日：2007-01-25

申请号：US11526730

申请日：2006-09-26

申请人： Shuhei Yada ,  Yasushi Ogawa ,  Yoshiro Suzuki ,  Kimikatsu Jinno ,  Hirochika Hosaka ,  Kenji Takasaki ,  Masayasu Goriki

发明人： Shuhei Yada ,  Yasushi Ogawa ,  Yoshiro Suzuki ,  Kimikatsu Jinno ,  Hirochika Hosaka ,  Kenji Takasaki ,  Masayasu Goriki

IPC分类号： C07C51/42

CPC分类号： C07C51/44 ,  B01D3/14 ,  B01D3/146 ,  B01D3/42 ,  B01D3/4211 ,  C07C67/54 ,  C07C57/04 ,  C07C69/54

摘要： In the stopping and starting operations of a distillation column used for producing (meth)acrylic acids according to the present invention, upon stopping the operation of the distillation column, the heating of a reboiler attached thereto is interrupted and then the reboiler is rapidly cooled; and/or upon starting the operation of the distillation column for production of the (meth)acrylic acids, an inner wall surface of the distillation column is heated to a temperature higher than a condensation temperature of the (meth)acrylic acids and the operation of the distillation column is started under the heated condition. According to the present invention, it is possible to early and safely stop the operation of the distillation column while preventing the occurrence of polymerization within the distillation column, and stably perform an operation for distillation of acrylic monomers for a long period of time.

摘要翻译： 在根据本发明的用于生产（甲基）丙烯酸的蒸馏塔的停止和开始操作中，停止蒸馏塔的操作后，连接的再沸器的加热被中断，然后再沸器被快速冷却; 和/或在开始用于生产（甲基）丙烯酸的蒸馏塔的操作时，将蒸馏塔的内壁表面加热到高于（甲基）丙烯酸的冷凝温度的温度和 蒸馏塔在加热条件下启动。 根据本发明，能够在避免蒸馏塔内发生聚合的同时，早日安全地停止蒸馏塔的运转，并且能够长时间稳定地进行丙烯酸类单体的蒸馏操作。

公开(公告)号：US07786323B2

公开(公告)日：2010-08-31

申请号：US11434164

申请日：2006-05-16

申请人： Shuhei Yada ,  Yasushi Ogawa ,  Kenji Takasaki ,  Yoshiro Suzuki ,  Kimikatsu Jinno

发明人： Shuhei Yada ,  Yasushi Ogawa ,  Kenji Takasaki ,  Yoshiro Suzuki ,  Kimikatsu Jinno

IPC分类号： B01D47/00

CPC分类号： C07C45/783 ,  C07C45/33 ,  C07C45/35 ,  C07C51/43 ,  C07C47/22 ,  C07C57/04

摘要： (Meth)acrolein or (meth)acrylic acid is collected by bringing a reaction gas (1) containing (meth)acrolein or (meth)acrylic acid obtained through a vapor-phase catalytic oxidation reaction into contact with an aqueous solution as a collecting solvent in a collecting tower main body (2). The reaction gas (1) is supplied to the collecting tower main body (2) from two nozzles (2c) facing each other, and is caused to collide in the collecting tower main body (2). According to the present invention, (meth)acrolein or (meth)acrylic acid can be efficiently collected from a gas containing (meth)acrolein or (meth)acrylic acid while preventing polymerization.

摘要翻译： （甲基）丙烯醛或（甲基）丙烯酸通过将含有（甲基）丙烯醛或通过气相催化氧化反应获得的（甲基）丙烯酸）的反应气体（1）与作为收集溶剂的水溶液接触而收集 在收集塔主体（2）中。 反应气体（1）从彼此面对的两个喷嘴（2c）供给到收集塔主体（2），并且与收集塔主体（2）碰撞。 根据本发明，可以从含有（甲基）丙烯醛或（甲基）丙烯酸的气体中有效地收集（甲基）丙烯醛或（甲基）丙烯酸，同时防止聚合。