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    • 57. 发明授权
    • Storage tank for easily polymerizable compound and method of storage
    • 容易聚合的化合物储存罐和储存方法
    • US07241919B2
    • 2007-07-10
    • US11133184
    • 2005-05-20
    • Shuhei YadaYasushi OgawaYoshiro SuzukiKimikatsu JinnoHirochika HosakaMasayasu Goriki
    • Shuhei YadaYasushi OgawaYoshiro SuzukiKimikatsu JinnoHirochika HosakaMasayasu Goriki
    • C07C57/02
    • B01J19/00B01J2219/00006B01J2219/00083B01J2219/00247B01J2219/00252B01J2219/00254Y10T137/0391Y10T137/6416Y10T137/6579Y10T137/85978
    • The storage tank of the invention for an easily polymerizable compound is a storage tank having an acceptance piping and a delivery piping and is characterized by having a circulation line which directly connects the acceptance piping to the delivery piping or having circulation lines which respectively connect the acceptance piping to the storage tank and the storage tank to the delivery piping; the method of storing of the invention is characterized by storing an easily polymerizable compound in the storage tank while circulating the compound in the storage tank through the circulation line(s); the method of pipe jointing and apparatus therefor of the invention are a method of jointing pipes fitted to a handling apparatus in a production apparatus, storage apparatus, or the like for the purpose of transporting a corrosive liquid, the method being characterized in that the pipes are jointed with flanges, bolts, and nuts made of a material having resistance to corrosion by the corrosive liquid; the process for (meth)acrylic acid compound production of the invention is a process for producing and/or purifying a (meth)acrylic acid compound, and is characterized in that the temperature of a purified (meth)acrylic acid compound obtained which is being supplied to a storage tank is regulated so as to be not higher than the temperature of the purified (meth)acrylic acid compound residing in the storage tank; and the process of the invention for producing an easily polymerizable compound which is a (meth)acrylic acid compound is characterized in that the temperature of a (meth)acrylic acid compound-containing liquid which has been discharged as an off-specification product and is being supplied to a storage tank is regulated so as to be not higher than the temperature of the off-specification liquid stored in the storage tank.
    • 用于易聚合化合物的本发明的储罐是具有接受管道和输送管道的储罐,其特征在于,具有将接收管道直接连接到输送管道的循环管线或具有分别连接接收的循环管线 管道到储罐和储罐到输送管道; 本发明的储存方法的特征在于,通过在循环管道中使化合物在储罐中循环而将容易聚合的化合物储存在储罐中; 本发明的管接头方法及其设备是在制造装置,储存装置等中装配于处理装置的管道的输送腐蚀性液体的方法,其特征在于,管道 与由腐蚀性液体具有腐蚀性的材料制成的法兰,螺栓和螺母接合; 本发明的(甲基)丙烯酸化合物的制造方法是(甲基)丙烯酸化合物的制造和/或纯化方法,其特征在于,得到的纯化的(甲基)丙烯酸化合物的温度为 调节供给到储罐的温度不高于存储在储罐中的纯化的(甲基)丙烯酸化合物的温度; 本发明的制备作为(甲基)丙烯酸化合物的易聚合性化合物的方法的特征在于,作为脱离规格的产品排出的(甲基)丙烯酸化合物的液体的温度为 被调节为不高于储存在储罐中的不合格液体的温度。
    • 59. 发明申请
    • Process for production of (meth)acrylic acid of (meth)acrolein
    • (甲基)丙烯醛的(甲基)丙烯酸的制造方法
    • US20070043238A1
    • 2007-02-22
    • US11451355
    • 2006-06-13
    • Shuhei YadaYasushi OgawaYoshiro SuzukiKimikatsu Jinno
    • Shuhei YadaYasushi OgawaYoshiro SuzukiKimikatsu Jinno
    • C07C51/16
    • B01J23/002B01J23/8876B01J2523/00C07C45/33C07C45/35C07C51/215C07C51/252C07C47/22C07C57/04B01J2523/12B01J2523/13B01J2523/22B01J2523/305B01J2523/41B01J2523/54B01J2523/68B01J2523/842B01J2523/845B01J2523/847
    • An object of the present invention is to provide that, in a process for the production of (meth)acrolein or (meth)acrylic acid by a gas-phase catalytic oxidation reaction of a substance to be oxidized such as propylene, propane, isobutylene and (meth)acrolein with molecular oxygen or molecular oxygen-containing gas using a multi-tubular reactor equipped with one or more catalyst layer(s) in a direction of tube axis, a sudden rise of temperature is suppressed even after changing the reaction condition for raising the reaction temperature for enhancing the production velocity whereby inactivation of the catalyst is prevented and a stable production is carried out. The present invention relates to a process where a change in the reaction condition for raising the reaction temperature is conducted by changing the temperature of the heat medium for the adjustment of reaction temperature at the inlet equipped with the above-mentioned multi-tubular reactor and, at that time, (1) change in the inlet temperature of the heat medium is conducted at not higher than 2° C. for each changing operation and (2) when another changing operation is continuously conducted, the changing operation is conducted where the time interval from the changing operation immediately before that is made not shorter than 10 minutes.
    • 本发明的目的是提供在通过气相催化氧化反应生成(甲基)丙烯醛或(甲基)丙烯酸的方法中,例如丙烯,丙烷,异丁烯和 (甲基)丙烯醛与分子氧或含分子氧的气体,使用在管轴方向上配备有一个或多个催化剂层的多管式反应器,甚至在改变反应条件之后也抑制了温度的突然升高 提高反应温度以提高生产速度,从而防止催化剂的失活并进行稳定的生产。 本发明涉及通过改变用于调节装有上述多管式反应器的入口处的反应温度的热介质的温度来进行提高反应温度的反应条件的变化的方法, 此时,(1)对于各变化动作,热介质的入口温度的变化不高于2℃,(2)当连续进行其他变更动作时,进行变更动作, 在此之前的更改操作的间隔不小于10分钟。
    • 60. 发明申请
    • Gas-phase catalytic oxidation process and process for producing (METH) acrolein or (METH) acrylic acid
    • 气相催化氧化方法和(METH)丙烯醛或(METH)丙烯酸的制备方法
    • US20070021632A1
    • 2007-01-25
    • US11528395
    • 2006-09-28
    • Shuhei YadaYasushi OgawaYoshiro SuzukiHirochika HosakaKimikatsu Jinno
    • Shuhei YadaYasushi OgawaYoshiro SuzukiHirochika HosakaKimikatsu Jinno
    • C07C45/28C07C51/16
    • C07C51/215C07C45/33C07C45/35C07C51/252C07C47/22C07C57/04
    • (1) In a gas-phase catalytic oxidation process for conducting gas-phase catalytic oxidation reaction using a fixed bed multipipe type reactor having reaction tubes filled with a catalyst while feeding a reaction raw gas thereinto, the catalyst is filled in each of the reaction tubes of the fixed bed multipipe type reactor to form two or more catalyst layers having different catalytic activities from each other in a direction of the oxidation reaction, and the catalyst layer disposed nearest to a reaction raw gas inlet of the reaction tube has a higher catalytic activity than that of the next catalyst layer adjacent thereto, or (2) in a process for producing (meth)acrolein or (meth)acrylic acid by subjecting a raw material of the (meth)acrolein or (meth)acrylic acid, and molecular oxygen or a molecular oxygen-containing gas to gas-phase catalytic oxidation reaction using a fixed bed multipipe type reactor having two or more catalyst layers in an axial direction of each of reaction tubes provided in the reactor, a difference between maximum and minimum reaction peak temperatures of the respective catalyst layers in the axial direction of the reaction tube is not more than 20° C. According to these processes, formation of hot spots in the catalyst can be efficiently prevented.
    • (1)在使用固定床多管式反应器进行气相催化氧化反应的气相催化氧化反应器中,在反应管中装入催化剂,同时向其中加入反应原料气体,在每个反应中填充催化剂 固定床多管式反应器的管,在氧化反应的方向上形成具有彼此不同的催化活性的两个以上的催化剂层,最靠近反应管的反应原料气体入口设置的催化剂层具有较高的催化剂 活性高于与其相邻的下一催化剂层的活性,或(2)在(甲基)丙烯醛或(甲基)丙烯酸的原料和分子量 氧或含分子氧的气体进行气相催化氧化反应,使用在每个反应管的轴向上具有两个以上催化剂层的固定床多管型反应器 在反应器中设置反应管的轴向方向上的各催化剂层的最大和最小反应峰值温度之间的差不超过20℃。根据这些方法,可以有效地形成催化剂中的热点 防止了