公开(公告)号：US20050192464A1

公开(公告)日：2005-09-01

申请号：US11061019

申请日：2005-02-18

申请人： Seong Kang ,  Seok Choi ,  Kyoung Ha ,  Geon Kim ,  Boo Woo ,  Sang Lee ,  Young Kim ,  Koo Kang

发明人： Seong Kang ,  Seok Choi ,  Kyoung Ha ,  Geon Kim ,  Boo Woo ,  Sang Lee ,  Young Kim ,  Koo Kang

IPC分类号： C07C51/43 ,  C07C51/42 ,  C07C51/48

CPC分类号： C07C51/48 ,  C07C57/04

摘要： The present invention relates to a method for producing (meth)acrylic acid comprising a process of recovering (meth)acrylic acid as an aqueous (meth)acrylic acid from a (meth)acrylic acid-containing gas mixture produced by the catalytic gas phase oxidation of at least one reactant selected from the group consisting of propane, propylene, isobutylene and (meth)acrolein, and a system usable for the method. The recovery process comprises the steps of: (1) feeding the (meth)acrylic acid-containing gas mixture into a quenching tower and condensing it in the quenching tower so as to recover an aqueous (meth)acrylic acid solution from the bottom of the quenching tower, in which some of the recovered aqueous solution of (meth)acrylic acid is recycled to the top part of the quenching tower so as to condense the (meth)acrylic acid-containing gas mixture; (2) passing the uncondensed part of the (meth)acrylic acid-containing gas mixture from the quenching tower through the top of the quenching tower to an absorption column; (3) absorbing (meth)acrylic acid contained in the uncondensed part of the (meth)acrylic acid-containing gas mixture in the absorption column with a absorption solvent; (4) feeding the (meth)acrylic acid solution resulting from the absorption in the step (3) to a desorption column; and (5) separating the solvent used in the step (3) from the (meth)acrylic acid solution in the desorption column, so that the substance from which the solvent has been removed in the desorption column is fed to the quenching tower, and the separated solvent is recycled to the absorption column. The inventive method is an efficient and economic method which allows a reduction in energy consumption in subsequent purification processes by maximizing the concentration of an aqueous solution of (meth)acrylic solution recovered at the bottom of the quenching tower and minimizing the concentration of (meth)acrylic acid lost from the vent gas of the absorption column.

公开(公告)号：US20060284723A1

公开(公告)日：2006-12-21

申请号：US11453117

申请日：2006-06-14

申请人： Kyoung Ha ,  Boo Woo ,  Jun Ko ,  Seong Kang ,  Seok Choi ,  Sang Lee ,  Young Kim

发明人： Kyoung Ha ,  Boo Woo ,  Jun Ko ,  Seong Kang ,  Seok Choi ,  Sang Lee ,  Young Kim

IPC分类号： H01C3/04

CPC分类号： G01K3/14 ,  G01K1/14 ,  G01K7/02

摘要： Disclosed is a temperature measuring device. The temperature measuring device includes: a thermo-well tube; and a cable or wire type temperature measuring means which is installed in a thermo-well tube, wherein temperature measuring means has temperature detecting sensors disposed at an intermediate portion thereof, and the temperature detecting sensors can be moved axially in the thermo-well tube by applying tension to both ends of the cable or wire type temperature measuring means. The present invention also provides a reaction tube in which the temperature measuring device is disposed axially, and a reactor including at least one temperature measuring device or reaction tube as described above.

公开(公告)号：US20070073084A1

公开(公告)日：2007-03-29

申请号：US11483752

申请日：2006-07-10

申请人： Kyoung Ha ,  Boo Woo ,  Jun Ko ,  Seong Kang ,  Seok Choi ,  Young Kim

发明人： Kyoung Ha ,  Boo Woo ,  Jun Ko ,  Seong Kang ,  Seok Choi ,  Young Kim

IPC分类号： B01J8/04 ,  C07C51/16 ,  C07C51/235

CPC分类号： C07C45/34 ,  B01J8/0453 ,  B01J8/0457 ,  B01J8/067 ,  B01J2208/00212 ,  B01J2208/0053 ,  B01J2208/025 ,  B01J2219/0004 ,  C07C45/35 ,  C07C45/36 ,  C07C45/37 ,  C07C51/215 ,  C07C51/252 ,  C07C47/21 ,  C07C47/22 ,  C07C57/04

摘要： Disclosed is a process for producing unsaturated aldehydes and/or unsaturated acids from olefins or alkanes in a fixed bed shell-and-tube heat exchanger-type reactor by catalytic vapor phase oxidation. A heat exchanger-type reactor for use in such a process is also disclosed. In the process, at least one of the first-step reaction zone and the second-step reaction zone is divided into two or more shell spaces by at least one partition; each of the divided shell spaces is independently heat-controlled; a heat transfer medium in the first shell space of the first-step reaction zone or the first shell space of the second-step reaction zone has a temperature ranging from the lowest active temperature of a catalyst layer packed in a reaction tube corresponding to the first shell space of the first-step reaction zone or the first shell space of the second-step reaction zone to [the lowest active temperature+20° C.], when referring to the two or more shell spaces corresponding to the first-step reaction zone sequentially as the first shell space of the first-step reaction zone, the second shell space of the first-step reaction zone, . . . , the nth shell space of the first-step reaction zone, and the two or more shell spaces corresponding to the second-step reaction zone sequentially as the first shell space of the second-step reaction zone, the second shell space of the second-step reaction zone, . . . , the nth shell space of the second-step reaction zone; and the first shell space of the first-step reaction zone or the first shell space of the second-step reaction zone is controlled in such a manner that the first shell space provides a reactant conversion contribution per length as defined in Equation 1 or 2 of 1.2˜2.5.

摘要翻译： 公开了一种通过催化气相氧化在固定床管壳式热交换器型反应器中由烯烃或烷烃生产不饱和醛和/或不饱和酸的方法。 还公开了一种用于这种方法的热交换器型反应器。 在该过程中，至少一个第一步骤反应区和第二步反应区被至少一个隔板分成两个或多个壳层空间; 每个分开的壳空间是独立的热控制的; 在第一步骤反应区的第一壳体空间或第二阶段反应区的第一壳体空间中的传热介质的温度范围从填充在对应于第一步骤的反应管的反应管中的催化剂层的最低活性温度 当提及对应于第一步反应的两个或多个壳层空间时，第一步反应区的壳体空间或第二步反应区的第一壳空间为[最低活性温度+ 20℃] 作为第一步反应区的第一壳空间，第一步反应区的第二壳空间。 。 。 ，第一步反应区的第n个第<！ - SIPO - >壳空间，以及对应于第二步反应区的两个或多个壳层空间依次作为第二步反应区的第一壳空间， 第二步反应区的第二个壳体空间。 。 。 ，第二步反应区的第n个壳空间; 并且以这样的方式控制第一步骤反应区或第二阶段反应区的第一壳层空间的第一壳层空间，使得第一壳空间提供如式1或2中定义的每个长度的反应物转化贡献 1.2〜2.5。

公开(公告)号：US20060211884A1

公开(公告)日：2006-09-21

申请号：US11378438

申请日：2006-03-17

申请人： Boo Woo ,  Jun Ko ,  Kyoung Ha ,  Seong Kang ,  Seok Choi ,  Young Kim

发明人： Boo Woo ,  Jun Ko ,  Kyoung Ha ,  Seong Kang ,  Seok Choi ,  Young Kim

IPC分类号： C07C51/16 ,  C07C51/235

CPC分类号： B01J8/067 ,  B01J2208/00212 ,  B01J2208/025 ,  C07C51/215 ,  C07C51/252 ,  C07C57/04

摘要： Disclosed is a shell-and-tube heat exchanger type reactor that can be used for a process of producing unsaturated acids from olefins via fixed-bed catalytic partial oxidation, which comprises at least one reaction tube, each including at least one first-step catalyst layer, in which olefins are oxidized by a first-step catalyst to mainly produce unsaturated aldehydes, and at least two second-step catalyst layers, in which the unsaturated aldehydes are oxidized by a second-step catalyst to produce unsaturated acids, wherein a first catalyst layer of the second-step catalyst layers, disposed right adjacent to the first-step catalyst layer, has an activity corresponding to 5˜30% of the activity of the catalyst layer having a highest activity among the second-step catalyst layers. A method of producing unsaturated acids from olefins by using the reactor is also disclosed.

摘要翻译： 公开了一种壳管式热交换器型反应器，其可用于通过固定床催化部分氧化由烯烃生产不饱和酸的方法，其包括至少一个反应管，每个反应管包含至少一个第一步催化剂 层，其中烯烃被第一步催化剂氧化以主要产生不饱和醛，以及至少两个第二步催化剂层，其中不饱和醛被第二步催化剂氧化以产生不饱和酸，其中第一 与第一级催化剂层相邻设置的第二级催化剂层的催化剂层具有相当于第二级催化剂层中活性最高的催化剂层的活性的5〜30％的活性。 还公开了通过使用反应器由烯烃生产不饱和酸的方法。

公开(公告)号：US20050245763A1

公开(公告)日：2005-11-03

申请号：US11116367

申请日：2005-04-28

申请人： Seong Kang ,  Seok Choi ,  Kyoung Ha ,  Jun Ko ,  Boo Woo ,  Young Kim

发明人： Seong Kang ,  Seok Choi ,  Kyoung Ha ,  Jun Ko ,  Boo Woo ,  Young Kim

IPC分类号： C07C51/42 ,  C07C51/44 ,  C07C51/487

CPC分类号： C07C51/44 ,  B01J2219/00006 ,  C07C51/487 ,  C07C57/04

摘要： Disclosed is a simplified method for recovering acrylic acid from a mixture containing acrylic acid, acrylic acid dimer and impurities with high boiling point, in a stable and efficient manner. The method comprises the steps of: introducing the mixture into an acrylic acid recovering device comprising an acrylic distillation unit integrated with an acrylic acid dimer pyrolysis tank; carrying out decomposition of acrylic acid dimmer under reduced pressure and recovering acrylic acid. The method optionally further comprises a step of recycling a portion of the solution obtained from the bottom of the acrylic acid recovering device to the acrylic acid recovering device.

摘要翻译： 公开了一种以稳定且有效的方式从含有丙烯酸，丙烯酸二聚物和高沸点杂质的混合物中回收丙烯酸的简化方法。 该方法包括以下步骤：将混合物引入丙烯酸回收装置中，该装置包括与丙烯酸二聚物热解罐结合的丙烯酸蒸馏装置; 在减压下进行丙烯酸二聚体的分解并回收丙烯酸。 所述方法还包括将从丙烯酸回收装置的底部获得的溶液的一部分再循环到丙烯酸回收装置的步骤。

公开(公告)号：US20060025629A1

公开(公告)日：2006-02-02

申请号：US11192223

申请日：2005-07-28

申请人： Seong Kang ,  Seok Choi ,  Kyoung Ha ,  Jun Ko ,  Young Kim ,  Boo Woo ,  Min Park

发明人： Seong Kang ,  Seok Choi ,  Kyoung Ha ,  Jun Ko ,  Young Kim ,  Boo Woo ,  Min Park

IPC分类号： C07C51/42

CPC分类号： C07C51/44 ,  C07C51/48 ,  C07C57/04

摘要： Disclosed is a method for producing (meth)acrylic acid comprising a process of recovering (meth)acrylic acid as aqueous (meth)acrylic acid solution from a (meth)acrylic acid-containing gas mixture produced by the catalytic gas phase oxidation of at least one reactant selected from the group consisting of propane, propylene, isobutylene and (meth)acrolein, wherein the recovering process comprises the steps of: (1) feeding the (meth)acrylic acid-containing gas mixture into a quenching tower and condensing it in the quenching tower so as to recover an aqueous (meth)acrylic acid solution from the bottom of the quenching tower, in which some of the recovered aqueous (meth)acrylic acid solution is recycled to the upper portion of the quenching tower so as to condense the (meth)acrylic acid-containing gas mixture; (2) passing the uncondensed part of the (meth)acrylic acid-containing gas mixture from the top of the quenching tower to a distillation tower; and (3) heating the bottom of the distillation tower to separate water-containing impurity components from the uncondensed (meth)acrylic acid-containing gas mixture and to discharge them from the top of the distillation tower. A system used for carrying out the method is also disclosed.

公开(公告)号：US20050143601A1

公开(公告)日：2005-06-30

申请号：US11019363

申请日：2004-12-23

申请人： Kyoung Ha ,  Geon Kim ,  Seong Kang ,  Boo Woo

发明人： Kyoung Ha ,  Geon Kim ,  Seong Kang ,  Boo Woo

IPC分类号： C07C51/235 ,  C07B41/08 ,  C07C51/16 ,  C07C51/25

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

摘要： The present invention provides a process of producing unsaturated acids from unsaturated aldehydes by fixed-bed catalytic partial oxidation in a shell-and-tube heat exchanger-type reactor, as well as a shell-and-tube heat exchanger-type reactor for use in the process. In the invention, second-stage reaction zone of mainly producing unsaturated acids by the catalytic vapor phase oxidation of an unsaturated aldehyde-containing gas mixture produced in a first-stage reaction zone with molecular oxygen is divided into two or more shell spaces by at least one partition. Each of the divided shell spaces is filled with a heat transfer medium, and the heat transfer medium in each shell space is maintained at isothermal temperature or a temperature difference of 0-5° C. Also, in order to protect catalyst layers from a highly exothermic reaction, the process is performed at a limited temperature difference between the temperature at a hot spot and the temperature of the heat transfer medium. Also, in order to facilitate the removal of heat generation at a location where the partition is placed, a reaction inhibition layer is disposed in that location. The improved heat control system for reactors provided according to the present invention can secure the heat stability of the catalyst layer, reduce the amount of byproducts, and increase the yield of a final product.

摘要翻译： 本发明提供了一种在壳管式热交换器型反应器中通过固定床催化部分氧化由不饱和醛生成不饱和酸的方法，以及用于在管式热交换器型反应器中使用的管壳式热交换器型反应器 的过程。 在本发明中，通过在分子氧的第一阶段反应区中产生的不饱和醛的气体混合物的催化气相氧化主要生成不饱和酸的第二阶段反应区至少分成两个或更多个壳层空间 一个分区。 每个分开的壳体空间填充有传热介质，并且每个壳体空间中的传热介质保持在等温温度或0-5℃的温差。此外，为了保护催化剂层免受高温 放热反应，该过程在热点温度与传热介质的温度之间的有限温度差下进行。 此外，为了便于在隔离物的位置除去发热，在该位置设置反应抑制层。 根据本发明提供的用于反应器的改进的热控制系统可以确保催化剂层的热稳定性，减少副产物的量，并且提高最终产品的产率。

公开(公告)号：US20050049435A1

公开(公告)日：2005-03-03

申请号：US10931034

申请日：2004-09-01

申请人： Kyoung Su Ha ,  Geon Kim ,  Seong Kang ,  Seok Choi ,  Boo Gon Woo

发明人： Kyoung Su Ha ,  Geon Kim ,  Seong Kang ,  Seok Choi ,  Boo Gon Woo

IPC分类号： C07C45/27 ,  C07C51/25 ,  C07C51/16 ,  C07C51/235

CPC分类号： C07C51/252 ,  C07C57/04

摘要： The present invention provides a process of producing unsaturated aldehydes and unsaturated acids from olefins by fixed-bed catalytic partial oxidation in a shell-and-tube heat exchanger-type reactor. In this process, the reactor comprises a first-step reaction zone of mainly producing the unsaturated aldehydes, a second-step reaction zone of mainly producing the unsaturated acids, or both the two zones. The first-step reaction zone is divided into two or more zones by a partition. Each of the divided shell spaces is filled with a heat transfer medium, and the heat transfer medium in each shell space is maintained at isothermal temperature or a temperature difference of 0-5 ° C. The temperatures of the heat transfer media in each of the divided shell spaces are set to increase in the moving direction of reactants. In order to facilitate the removal of heat generation at a location where the partition is placed, a reaction inhibition layer is disposed in the first-step reaction zone. Also, in order to protect the catalyst layer from a highly exothermic reaction, the process is performed at a limited temperature difference between the temperature in a hot spot and the temperature of a molten salt. If the improved heat control system according to the present invention is used, the heat stability of the catalyst layer will be secured and the yields of intermediate and final products can be increased.

摘要翻译： 本发明提供了一种在壳管式热交换器型反应器中通过固定床催化部分氧化从烯烃生产不饱和醛和不饱和酸的方法。 在该方法中，反应器包括主要产生不饱和醛的第一步反应区，主要产生不饱和酸的第二步反应区或两个区。 第一步反应区通过隔板分成两个或多个区域。 每个分隔的壳体空间填充有传热介质，并且每个壳体空间中的传热介质保持在等温温度或0-5℃的温差。传热介质的温度 分开的壳体空间被设置为在反应物的移动方向上增加。 为了便于在放置隔板的位置除去发热，反应抑制层设置在第一步反应区中。 此外，为了保护催化剂层免受高度放热的反应，该过程在热点温度与熔融盐的温度之间的有限温度差下进行。 如果使用根据本发明的改进的热控制系统，则将确保催化剂层的热稳定性，并且可以提高中间产品和最终产品的产率。

公开(公告)号：US20070176858A1

公开(公告)日：2007-08-02

申请号：US11729881

申请日：2007-03-30

申请人： Soo Sim ,  Won Kim ,  Bon Koo ,  Seong Kang

发明人： Soo Sim ,  Won Kim ,  Bon Koo ,  Seong Kang

IPC分类号： G09G3/28

CPC分类号： G09G3/294 ,  G09G3/2022 ,  G09G3/2059 ,  G09G3/293 ,  G09G2320/0276 ,  G09G2320/041 ,  G09G2320/0626 ,  G09G2360/16

摘要： This invention relates to a driving apparatus of a plasma display panel that is capable of being operated stable, regardless of temperature. A driving apparatus of a plasma display panel according to the present invention includes a panel having a scanning electrode for receiving a scanning pulse in an address period and an address electrode for receiving a date pulse synchronized with the scanning pulse in the address period; and a pulse width controller for changing the width of the scanning pulse when the panel is driven at a low temperature.

摘要翻译： 本发明涉及等离子体显示面板的驱动装置，该驱动装置能够与温度无关地操作稳定。 根据本发明的等离子体显示面板的驱动装置包括具有用于在地址周期中接收扫描脉冲的扫描电极的面板和用于在寻址周期中接收与扫描脉冲同步的日期脉冲的地址电极; 以及脉冲宽度控制器，用于当面板在低温下被驱动时改变扫描脉冲的宽度。

公开(公告)号：US20070097051A1

公开(公告)日：2007-05-03

申请号：US11641873

申请日：2006-12-20

申请人： Seong Kang ,  Sang Yun

发明人： Seong Kang ,  Sang Yun

IPC分类号： G09G3/36

CPC分类号： G09G3/2946 ,  G09G3/2942 ,  G09G3/2965 ,  G09G3/298 ,  G09G2310/0275 ,  G09G2310/066 ,  G09G2320/0223 ,  G09G2330/024

摘要： A method of driving a plasma display panel that is adaptive for improving a picture quality. In the method, first and second sustain pulses having a different width during the sustain period are alternately applied to the first and second row electrodes.