公开(公告)号：US5719318A

公开(公告)日：1998-02-17

申请号：US810923

申请日：1997-03-05

申请人： Tatsuya Kawajiri ,  Michio Tanimoto ,  Daisuke Nakamura

发明人： Tatsuya Kawajiri ,  Michio Tanimoto ,  Daisuke Nakamura

IPC分类号： B01J23/88 ,  B01J23/887 ,  B01J23/888 ,  C07B61/00 ,  C07C51/25 ,  C07C57/055 ,  C07C51/16 ,  C07C51/235

CPC分类号： B01J23/002 ,  B01J23/8877 ,  B01J23/8885 ,  C07C51/252 ,  B01J2523/00

摘要： As an improvement for the process for production of acrylic acid by subjecting acrolein or an acrolein-containing gas to gas-phase oxidation with molecular oxygen in a fixed bed multitubular reactor, there is provided a novel process capable of producing acrylic acid at a high yield by suppressing the generation of heat spots in catalyst or the build-up of heat in hot spots of catalyst. The process comprises filling, in each of reactor tubes, two or more kinds of catalyst particles of different volumes so as to form a plurality of catalyst layers in the axial direction of the tube in such a manner that the particle volume of catalyst layer becomes smaller as the position of catalyst layer changes from the raw material gas inlet side of the tube to the raw material gas outlet side, each catalyst particle comprising, as the active component, a compound oxide containing at least Mo and V.

摘要翻译： 作为丙烯醛或含丙烯醛的气体在固定床多管反应器中用分子氧进行气相氧化的丙烯酸生产方法的改进，提供了一种以高产率生产丙烯酸的新方法 通过抑制催化剂中的热点的产生或催化剂的热点中的热积聚。 该方法包括在每个反应器管中填充两种或更多种不同体积的催化剂颗粒，以便在管的轴向上形成多个催化剂层，使得催化剂层的颗粒体积变小 由于催化剂层的位置从管的原料气体入口侧向原料气体出口侧变化，所以每个催化剂颗粒含有至少含有Mo和V的复合氧化物作为活性成分。

公开(公告)号：US06545178B1

公开(公告)日：2003-04-08

申请号：US09314719

申请日：1999-05-18

申请人： Michio Tanimoto ,  Daisuke Nakamura ,  Tatsuya Kawajiri

发明人： Michio Tanimoto ,  Daisuke Nakamura ,  Tatsuya Kawajiri

IPC分类号： C07C5116

CPC分类号： C07C45/35 ,  B01J23/002 ,  B01J23/8876 ,  B01J2523/00 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04 ,  B01J2523/13 ,  B01J2523/41 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/69 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/3712 ,  B01J2523/56

摘要： In the production of acrolein and acrylic acid by the catalytic gas phase oxidation of propylene with a molecular oxygen-containing gas, a method is provided which enables acrolein and acrylic acid to be stably produced with a high yield for a long time from propylene by effectively repressing such secondary reactions as are responsible for the formation of organic acids, high boiling compounds, and tarry compounds, the deposition of carbonized materials, and the deterioration of the quality of products. The content of unsaturated hydrocarbons (excluding propylene) of 2-5 carbon atoms in the raw material for propylene is kept below 500 ppm (by weight). Particularly, it is proper to use a raw material for propylene which has a content of unsaturated hydrocarbons (excluding propylene) of 2-5 carbon atoms of not more than 200 ppm (by weight) and a total content of diene and acetylenic compounds of 2-5 carbon atoms of not more than 200 ppm (by weight). The reaction scheme is shown below:

摘要翻译： 通过丙烯与含分子氧气体的催化气相氧化制备丙烯醛和丙烯酸，提供了一种使丙烯醛和丙烯酸长时间从丙烯中高效率稳定生产的方法， 抑制负责形成有机酸，高沸点化合物和焦油化合物的这种二次反应，碳化材料的沉积以及产品质量的劣化。 丙烯原料中2-5个碳原子的不饱和烃（不包括丙烯）的含量保持在500ppm以下（重量）。 特别地，使用具有2-5个碳原子的不饱和烃（不包括丙烯）的含量不超过200ppm（重量），二烯和炔属化合物的总含量为2的丙烯的原料是适当的 -5个碳原子不超过200ppm（重量）。 反应方案如下：

公开(公告)号：US06170670B2

公开(公告)日：2001-01-09

申请号：US09142179

申请日：1998-09-23

申请人： Yasuhiro Kato ,  Daisuke Nakamura ,  Tatsuya Kawajiri

发明人： Yasuhiro Kato ,  Daisuke Nakamura ,  Tatsuya Kawajiri

IPC分类号： B07B134

CPC分类号： B01J8/003 ,  B01J8/002 ,  B01J8/06 ,  B01J8/16 ,  B01J2208/00752

摘要： An apparatus for feeding a granular catalyst to a destination such as a reactor at a constant feeding rate uniformly charges the catalyst material into the device. The granular catalyst is loaded into individual compartments of a hopper and is ejected at a discharge rate controlled by a gate. When a vibrator is activated, a trough is caused to vibrate in its obliquely upward direction and the granular material in the trough is smoothly conveyed toward outlets of granular material passages formed in the trough, and is introduced to reaction tubes of the reactor via sieves. Powdery waste of the granular catalyst produced by the vibration of the trough is removed by letting it fall the sieves made in the granular material passages.

摘要翻译： 将粒状催化剂以恒定进料速度送入诸如反应器的目的地的装置将催化剂材料均匀地装入装置中。 颗粒状催化剂被装载到料斗的各个隔室中，并以由浇口控制的排出速率喷射。 当振动器被激活时，使槽在其向上倾斜的方向上振动，并且槽中的颗粒材料平滑地被输送到形成在槽中的颗粒材料通道的出口，并通过筛引入反应器的反应管。 通过将谷物的振动产生的颗粒状催化剂的粉末状废弃物通过使其落在粒状材料通道中制成的筛子而被除去。

公开(公告)号：US20090043128A1

公开(公告)日：2009-02-12

申请号：US12287082

申请日：2008-10-06

申请人： Hiromi Yunoki ,  Michio Tanimoto ,  Daisuke Nakamura

发明人： Hiromi Yunoki ,  Michio Tanimoto ,  Daisuke Nakamura

IPC分类号： C07C51/235 ,  B01J23/22 ,  B01J23/28

CPC分类号： C07C51/252 ,  B01J23/002 ,  B01J23/28 ,  B01J23/8885 ,  B01J37/0009 ,  B01J37/0223 ,  B01J37/0236 ,  B01J2523/00 ,  C07C57/04 ,  B01J2523/17 ,  B01J2523/55 ,  B01J2523/68 ,  B01J2523/69

摘要： An object of the present invention is to provide: a catalyst for production of acrylic acid which is a catalyst usable for production of acrylic acid and is excellent in the catalytic performances such as catalytic activity and in the physical properties such as physical strength of the catalyst itself; and a process for production of acrylic acid using this catalyst. As a means of achieving this object, a catalyst for production of acrylic acid according to the present invention is a catalyst obtained by drying a mixed liquid of starting materials including molybdenum and vanadium as essential components to give a dried material, molding the dried material with a liquid binder, and calcining the resultant molding, with the catalyst being characterized in that an ignition loss ratio of the dried material is from 5 to 40% by mass. A process for production of acrylic acid according to the present invention comprises the step of: subjecting acrolein to a catalytic gas phase oxidation in the presence of a molecular oxygen, with the process being characterized in that the above catalyst for production of acrylic acid according to the present invention is used.

摘要翻译： 本发明的目的在于提供：丙烯酸的制造用催化剂，其为可用于生产丙烯酸的催化剂，催化性能如催化活性以及催化剂的物理性能如催化剂的物理性能优异 本身; 以及使用该催化剂生产丙烯酸的方法。 作为实现该目的的手段，本发明的丙烯酸的制造用催化剂是通过干燥含有钼和钒的起始材料的混合液作为必要成分而得到的催化剂，得到干燥后的材料， 液体粘合剂，并煅烧所得到的模制品，催化剂的特征在于，干燥材料的灼烧损失率为5〜40质量％。 根据本发明的制备丙烯酸的方法包括以下步骤：在分子氧存在下使丙烯醛进行催化气相氧化，其特征在于上述用于生产丙烯酸的催化剂根据 使用本发明。

公开(公告)号：US07161044B2

公开(公告)日：2007-01-09

申请号：US10958015

申请日：2004-10-04

申请人： Daisuke Nakamura ,  Michio Tanimoto

发明人： Daisuke Nakamura ,  Michio Tanimoto

IPC分类号： C07C45/27 ,  C07C51/10 ,  C07C51/14 ,  C07C51/16

CPC分类号： C07C45/35 ,  C07C45/32 ,  C07C45/37 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04

摘要： An object of the present invention is to provide a catalytic gas phase oxidation reaction in which: even under reaction conditions of a higher gas pressure, a higher concentration of the raw material gas and a larger space velocity of a reaction gas, the thermal accumulation at the hot spot portion can be sufficiently suppressed with ease and at low costs, so that the reaction can be continued for a long time while a high yield is maintained. As a means of achieving this object, a catalytic gas phase oxidation reaction according to the present invention is a catalytic gas phase oxidation reaction with molecular oxygen or a molecular-oxygen-containing gas by using a fixed-bed multitubular reactor packed with catalysts; with the catalytic gas phase oxidation reaction being characterized in that: a catalyst-packed layer of each reaction tube of the reactor is divided into at least two reaction zones in a tubular axial direction; and the packing of the catalysts is such that the occupation volumes of the catalysts differ between at least two of the reaction zones and that an inert substance molding is mixed in at least one of the reaction zones.

摘要翻译： 本发明的目的是提供一种催化气相氧化反应，其中即使在较高气体压力，较高浓度的原料气体和较大的反应气体的空间速度的反应条件下，热累积在 可以容易地且低成本地充分地抑制热点部分，使得反应可以长时间持续，同时保持高产率。 作为实现该目的的手段，本发明的催化气相氧化反应是使用填充有催化剂的固定床多管反应器进行与分子氧或含分子氧气体的催化气相氧化反应， 催化气相氧化反应的特征在于：将反应器的每个反应管的催化剂填充层分成至少两个沿管轴方向的反应区; 并且催化剂的填充使得催化剂的占有体积在至少两个反应区之间不同，并且惰性物质模制品在至少一个反应区中混合。

公开(公告)号：US20060063951A1

公开(公告)日：2006-03-23

申请号：US11212474

申请日：2005-08-26

申请人： Hiromi Yunoki ,  Michio Tanimoto ,  Daisuke Nakamura

发明人： Hiromi Yunoki ,  Michio Tanimoto ,  Daisuke Nakamura

IPC分类号： B01J23/28 ,  C07C51/16

CPC分类号： C07C51/252 ,  B01J23/002 ,  B01J23/28 ,  B01J23/8885 ,  B01J37/0009 ,  B01J37/0223 ,  B01J37/0236 ,  B01J2523/00 ,  C07C57/04 ,  B01J2523/17 ,  B01J2523/55 ,  B01J2523/68 ,  B01J2523/69

摘要： An object of the present invention is to provide: a catalyst for production of acrylic acid which is a catalyst usable for production of acrylic acid and is excellent in the catalytic performances such as catalytic activity and in the physical properties such as physical strength of the catalyst itself; and a process for production of acrylic acid using this catalyst. As a means of achieving this object, a catalyst for production of acrylic acid according to the present invention is a catalyst obtained by drying a mixed liquid of starting materials including molybdenum and vanadium as essential components to give a dried material, molding the dried material with a liquid binder, and calcining the resultant molding, with the catalyst being characterized in that an ignition loss ratio of the dried material is from 5 to 40% by mass. A process for production of acrylic acid according to the present invention comprises the step of: subjecting acrolein to a catalytic gas phase oxidation in the presence of a molecular oxygen, with the process being characterized in that the above catalyst for production of acrylic acid according to the present invention is used.

公开(公告)号：US06563000B1

公开(公告)日：2003-05-13

申请号：US09576024

申请日：2000-05-23

申请人： Hiromi Yunoki ,  Michio Tanimoto ,  Daisuke Nakamura

发明人： Hiromi Yunoki ,  Michio Tanimoto ,  Daisuke Nakamura

IPC分类号： C07C5116

CPC分类号： C07C51/252 ,  C07C57/04

摘要： A process for producing acrylic acid through vapor-phase catalytic oxidation of acrolein or acrolein-containing gas with molecular oxygen or a molecular oxygen-containing gas using a catalyst-filled fixed bed shell-and-tube reactor is provided, which is characterized in that plural catalysts of different activity levels which are prepared by changing the kind and/or amount of alkaline metal(s) therein are filled in the reaction tubes in such an arrangement that the activity levels rise from the gas-inlet side toward the gas-outlet side of said tubes. According to this process, not only yield and productivity of acrylic acid are improved but also excessive heat, accumulation in the catalyst layer can be inhibited and catalysts degradation under heat is prevented, resulting in prolongation of catalyst life.

摘要翻译： 提供了一种通过使用催化剂填充的固定床管壳反应器通过气相催化氧化含有丙烯醛或含丙烯醛的气体与分子氧或含分子氧的气体制备丙烯酸的方法，其特征在于 通过改变其中的碱金属的种类和/或量来制备的不同活性水平的多种催化剂被填充在反应管中，活性水平从气体入口侧朝向气体出口 侧管。 根据该方法，不仅提高了丙烯酸的产率和生产率，而且过多的热量，可以抑制催化剂层中的积聚，并且防止催化剂在加热下的降解，导致催化剂寿命延长。

公开(公告)号：US06462232B1

公开(公告)日：2002-10-08

申请号：US09365845

申请日：1999-08-03

申请人： Daisuke Nakamura ,  Hideyuki Hironaka ,  Michio Tanimoto

发明人： Daisuke Nakamura ,  Hideyuki Hironaka ,  Michio Tanimoto

IPC分类号： C07C51235

CPC分类号： C07C51/252 ,  C07C57/04

摘要： Provided is a process for producing acrylic acid stably at a high yield over a long period of time by subjecting acrolein or acrolein-containing gas to catalytic vapor phase oxidation. The above process is characterized by controlling the reaction so that the following equations (1) and (2) are satisfied: 1° C.≦T0−T1≦15° C.  (1) T1

摘要翻译： 本发明提供通过使丙烯醛或含丙烯醛的气体进行催化气相氧化而长时间稳定地制备丙烯酸的方法。 上述方法的特征在于控制反应，使得满足以下等式（1）和（2）：其中T0表示催化剂层入口中的丙烯醛或含丙烯醛的气体的温度; T1表示催化剂层的入口部的温度; T2表示催化剂层的出口部的温度。

公开(公告)号：US07897813B2

公开(公告)日：2011-03-01

申请号：US11826630

申请日：2007-07-17

申请人： Michio Tanimoto ,  Daisuke Nakamura ,  Nobuyuki Hakozaki

发明人： Michio Tanimoto ,  Daisuke Nakamura ,  Nobuyuki Hakozaki

IPC分类号： C07C51/16

CPC分类号： B01J8/048 ,  B01J8/0492 ,  B01J8/0496 ,  B01J8/067 ,  B01J23/002 ,  B01J23/8885 ,  B01J37/0221 ,  B01J2208/00212 ,  B01J2208/00221 ,  B01J2208/00513 ,  B01J2208/00707 ,  B01J2208/025 ,  B01J2523/00 ,  C07C51/252 ,  C07C57/04 ,  B01J2523/17 ,  B01J2523/55 ,  B01J2523/68 ,  B01J2523/69 ,  B01J2523/13 ,  B01J2523/54 ,  B01J2523/842 ,  B01J2523/845

摘要： Conventional gas-phase catalytic oxidation reaction apparatus comprising two reactors for production of acrylic acid is subject to problems of high equipment costs for the reactors and piping, necessity for wide installation area and easy accumulation of carbides generated by autoxidation of acrolein. On the other hand, conventional reaction apparatus comprising a single reactor has the drawbacks that the composition of gas in the first stage reaction and in the second stage reaction cannot be optimized independently of each other, and that the allowable concentration of starting propylene is limited because of the risk of explosion. As a reaction apparatus to solve these problems, this invention provides a fixed bed shell-and-tube reaction apparatus comprising a single reactor, characterized in that the inside of the reactor is divided into two reaction zones of the first reaction zone and the second reaction zone, and that a space equipped with a mechanism for introducing a gaseous substance from outside is provided between the two reaction zones.

摘要翻译： 包括用于生产丙烯酸的两个反应器的常规气相催化氧化反应装置受到反应器和管道的高设备成本的问题的影响，需要宽的安装面积和易于积聚由丙烯醛自动氧化产生的碳化物。 另一方面，包括单个反应器的常规反应装置的缺点是第一阶段反应和第二阶段反应中的气体组成不能彼此独立地优化，并且起始丙烯的允许浓度受到限制，因为 的爆炸风险。 作为解决这些问题的反应装置，本发明提供一种包括单个反应器的固定床管壳反应装置，其特征在于，将反应器内部分成第一反应区和第二反应的两个反应区 并且在两个反应区之间设置有配备有用于从外部引入气态物质的机构的空间。

公开(公告)号：US07022643B2

公开(公告)日：2006-04-04

申请号：US10632030

申请日：2003-07-31

申请人： Hiromi Yunoki ,  Michio Tanimoto ,  Daisuke Nakamura

发明人： Hiromi Yunoki ,  Michio Tanimoto ,  Daisuke Nakamura

IPC分类号： B01J23/00 ,  B01J20/00 ,  B01J21/00

CPC分类号： B01J37/04 ,  B01J23/8885 ,  B01J37/0223 ,  B01J37/0236

摘要： There is disclosed a production process for a catalyst which process makes it possible to efficiently carry out the supporting of a catalytic component onto a carrier and to obtain the catalyst excellent in quality and performance. This production process is a production process for the catalyst including a particulate lump carrier and a catalytic component supported thereon; with the production process comprising the step of carrying out simultaneous revolution and rocking of a treatment container 20 as charged with the carrier and a catalyst precursor including the catalytic component, thereby supporting the catalytic component onto the carrier.

摘要翻译： 公开了一种催化剂的制造方法，该方法使得可以有效地进行载体上的催化组分的负载并获得质量和性能优异的催化剂。 该制造方法是催化剂的制造方法，其包括颗粒团块载体和负载在其上的催化组分; 该制造方法包括对载体和装载有催化剂成分的催化剂前体进行同时旋转和摆动的处理容器20的步骤，从而将催化剂成分负载到载体上。