Apparatus for recovering acrylic acid
    1.
    发明授权
    Apparatus for recovering acrylic acid 有权
    丙烯酸回收设备

    公开(公告)号:US08308913B2

    公开(公告)日:2012-11-13

    申请号:US12565359

    申请日:2009-09-23

    摘要: Disclosed is an apparatus for recovering an acrylic acid from a mixture containing acrylic acid, acrylic acid dimer and impurities with high boiling point, including: an acrylic acid recovering device that comprises an acrylic acid distillation unit being present within an acrylic acid dimer pyrolysis tank, and is operated under reduced pressure; a separation column for removing impurities with high boiling point from the mixture which is introduced into the acrylic acid recovering device; and a line for introducing the mixture into the acrylic acid recovering device.

    摘要翻译: 公开了一种用于从含有丙烯酸,丙烯酸二聚体和高沸点杂质的混合物中回收丙烯酸的装置,包括:丙烯酸回收装置,其包含存在于丙烯酸二聚体热解罐内的丙烯酸蒸馏单元, 并在减压下运行; 用于从引入丙烯酸回收装置的混合物中除去高沸点杂质的分离塔; 以及用于将混合物引入丙烯酸回收装置的管线。

    Method of producing unsaturated acid from olefin
    2.
    发明授权
    Method of producing unsaturated acid from olefin 有权
    从烯烃生产不饱和酸的方法

    公开(公告)号:US08142742B2

    公开(公告)日:2012-03-27

    申请号:US12884950

    申请日:2010-09-17

    IPC分类号: B01J8/06 C07C57/02

    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的活性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。

    Method for recovering acrylic acid
    3.
    发明授权
    Method for recovering acrylic acid 有权
    回收丙烯酸的方法

    公开(公告)号:US07612231B2

    公开(公告)日:2009-11-03

    申请号:US11116367

    申请日:2005-04-28

    IPC分类号: C07C51/42

    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。

    Temperature measuring device
    4.
    发明授权
    Temperature measuring device 有权
    温度测量装置

    公开(公告)号:US07591585B2

    公开(公告)日:2009-09-22

    申请号:US11453117

    申请日:2006-06-14

    IPC分类号: G01K1/14 G01K13/00 G01K7/02

    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.

    摘要翻译: 公开了一种温度测量装置。 所述温度测量装置包括:热井管; 以及安装在热井管中的电缆或线型温度测量装置,其中温度测量装置具有设置在其中间部分的温度检测传感器,并且温度检测传感器可以在热井管中轴向移动, 对电缆或电线式温度测量装置的两端施加张力。 本发明还提供一种反应管,其中温度测量装置轴向设置,反应器包括如上所述的至少一个温度测量装置或反应管。

    Method of producing styrene polymers using high speed catalytic dispersion technology
    5.
    发明授权
    Method of producing styrene polymers using high speed catalytic dispersion technology 失效
    使用高速催化分散技术生产苯乙烯聚合物的方法

    公开(公告)号:US07321016B2

    公开(公告)日:2008-01-22

    申请号:US11396763

    申请日:2006-04-03

    IPC分类号: C08F2/02 C08F12/04

    摘要: Provided is a method of preparing styrene polymers, the method comprising: homogeneously mixing a styrene monomer; a cocatalyst mixture of Group 13 metal-containing organic metal compound cocatalyst and an inert organic solvent; and a catalyst mixture of a metallocene catalyst and the inert organic solvent using a high speed homogenizing mixer to obtain a homogenized mixture; and providing the homogenized mixture to a reactor to initiate polymerization. In this method, catalyst is quickly dispersed among monomers using a high speed homogenizing mixer so that formation of gel, which occurs when a syndiotactic styrene polymer is produced, can be fundamentally prevented. In addition, a styrene polymer prepared using the method has high activity, good stereoregularity, and uniform molecular distribution.

    摘要翻译: 提供一种制备苯乙烯聚合物的方法,该方法包括:均匀混合苯乙烯单体; 含13族金属的有机金属化合物助催化剂和惰性有机溶剂的助催化剂混合物; 和茂金属催化剂和惰性有机溶剂的催化剂混合物,使用高速匀浆混合机得到均质混合物; 并将均匀的混合物提供到反应器以引发聚合。 在该方法中,使用高速匀浆混合器将催化剂快速分散在单体中,从而可以从根本上防止在产生间规苯乙烯聚合物时发生凝胶的形成。 此外,使用该方法制备的苯乙烯聚合物具有高活性,良好的立构规整性和均匀的分子分布。

    Preparation method of high molecular weight polycarbonate resin
    6.
    发明授权
    Preparation method of high molecular weight polycarbonate resin 有权
    高分子量聚碳酸酯树脂的制备方法

    公开(公告)号:US07148312B2

    公开(公告)日:2006-12-12

    申请号:US10500901

    申请日:2003-10-08

    IPC分类号: C08G64/00

    摘要: The present invention relates to a method for the preparation of a high molecular weight polycarbonate resin, and more particularly to a method for preparing a high molecular weight polycarbonate resin using a solid state polymerization method after the preparation of a crystalline polycarbonate or-conducting the preparation of the crystalline polycarbonate and the solid state polymerization thereof simultaneously. According to the method for the preparation of a high molecular weight polycarbonate resin of the invention, it is possible to produce a high molecular weight polycarbonate resin having a narrow molecular weight distribution and uniform properties and that is applicable to injection and extrusion in large quantities with a low cost within a short time.

    摘要翻译: 本发明涉及一种制备高分子量聚碳酸酯树脂的方法,更具体地说涉及在制备结晶聚碳酸酯之后使用固态聚合方法制备高分子量聚碳酸酯树脂的方法或导电制备 的结晶聚碳酸酯及其固态聚合。 根据本发明的高分子量聚碳酸酯树脂的制备方法,可以制造具有窄分子量分布和均匀性能的高分子量聚碳酸酯树脂,并且适用于大量注射和挤出 在短时间内成本较低。

    Preparation method of high molecular weight polycarbonate resin

    公开(公告)号:US20060167211A1

    公开(公告)日:2006-07-27

    申请号:US10500901

    申请日:2003-10-08

    IPC分类号: C08G64/00

    摘要: The present invention relates to a method for the preparation of a high molecular weight polycarbonate resin, and more particularly to a method for preparing a high molecular weight polycarbonate resin using a solid state polymerization method after the preparation of a crystalline polycarbonate or-conducting the preparation of the crystalline polycarbonate and the solid state polymerization thereof simultaneously. According to the method for the preparation of a high molecular weight polycarbonate resin of the invention, it is possible to produce a high molecular weight polycarbonate resin having a narrow molecular weight distribution and uniform properties and that is applicable to injection and extrusion in large quantities with a low cost within a short time.

    METHOD OF PRODUCING UNSATURATED ACID FROM OLEFIN
    8.
    发明申请
    METHOD OF PRODUCING UNSATURATED ACID FROM OLEFIN 有权
    从烯烃生产不饱和酸的方法

    公开(公告)号:US20110008218A1

    公开(公告)日:2011-01-13

    申请号:US12884950

    申请日:2010-09-17

    IPC分类号: B01J19/00

    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的活性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。

    METHOD OF PRODUCING UNSATURATED ACID IN FIXED-BED CATALYTIC PARTIAL OXIDATION REACTOR WITH HIGH EFFICIENCY
    9.
    发明申请
    METHOD OF PRODUCING UNSATURATED ACID IN FIXED-BED CATALYTIC PARTIAL OXIDATION REACTOR WITH HIGH EFFICIENCY 审中-公开
    固定床催化部分氧化反应器高效生产不饱和酸的方法

    公开(公告)号:US20100015017A1

    公开(公告)日:2010-01-21

    申请号:US12564708

    申请日:2009-09-22

    IPC分类号: B01J8/04

    摘要: A shell-and-tube heat exchanger-type reactor including one or more catalytic tubes, each including a first-step reaction zone and a second-step reaction zone, wherein at least one of the first-step reaction zone and the second-step reaction zone is divided into two or more shell spaces by a partition; each of the divided shell spaces is independently heat-controlled; and a heat transfer medium having a temperature from the lowest active temperature of a catalyst layer 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 of the catalyst layer plus 20° C.; and the first shell space of the first-step reaction zone or the first shell space of the second-step reaction zone is controlled so as to provide a reactant conversion contribution per length of 1.2˜2.5.

    摘要翻译: 一种管壳式热交换器型反应器,其包括一个或多个催化管,每个催化管包括第一步骤反应区和第二步反应区,其中至少一个第一步反应区和第二步 反应区通过隔板分成两个或多个壳体空间; 每个分开的壳空间是独立的热控制的; 以及传热介质,其具有对应于第一步骤反应区的第一壳体空间或第二阶段反应区域的第一壳体空间的反应管中催化剂层的最低活性温度的温度到最低活性 催化剂层的温度加上20℃。 并且控制第一步反应区的第一壳体空间或第二步反应区的第一壳体空间,以便提供每个长度为1.2〜2.5的反应物转化率贡献。

    Method for producing (meth) acrylic acid
    10.
    发明授权
    Method for producing (meth) acrylic acid 有权
    (甲基)丙烯酸的制造方法

    公开(公告)号:US07632968B2

    公开(公告)日:2009-12-15

    申请号:US11192223

    申请日:2005-07-28

    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.

    摘要翻译: 公开了一种制备(甲基)丙烯酸的方法,包括从(甲基)丙烯酸水溶液中回收(甲基)丙烯酸作为(甲基)丙烯酸水溶液的方法,所述方法至少由 一种选自丙烷,丙烯,异丁烯和(甲基)丙烯醛的反应物,其中回收方法包括以下步骤:(1)将含(甲基)丙烯酸的气体混合物进料到淬火塔中并将其冷凝 淬火塔,以从骤冷塔的底部回收(甲基)丙烯酸水溶液,其中一些回收的(甲基)丙烯酸水溶液被循环到淬火塔的上部以冷凝 (甲基)丙烯酸气体混合物; (2)使来自(甲基)丙烯酸的气体混合物的未冷凝的部分从淬火塔的顶部通到蒸馏塔; 和(3)加热蒸馏塔的底部以将含水的杂质组分与未冷凝(甲基)丙烯酸的气体混合物分离并从蒸馏塔的顶部排出。 还公开了用于执行该方法的系统。