Method of on-line coating film on the inner walls of the reaction tubes in a hydrocarbon pyrolysis reactor
    5.
    发明授权
    Method of on-line coating film on the inner walls of the reaction tubes in a hydrocarbon pyrolysis reactor 失效
    在烃热解反应器中在反应管的内壁上在线涂覆膜的方法

    公开(公告)号:US06514563B1

    公开(公告)日:2003-02-04

    申请号:US09671404

    申请日:2000-09-27

    IPC分类号: B05D722

    摘要: A method of on-line coating a coat film on the inner wall of a reaction tube in a hydrocarbon pyrolysis reactor for preventing the formation and the deposit of coke on the inner walls. This method comprises the steps of vapor depositing a mixed solution of a metal alkoxide and a chromic compound on the inner walls concurrently with introducing a carrier at a flow rate of 1-5000 kg/hr/coil at a temperature of 600-900° C. under a pressure of 0-3 kg/cm2 to form a buffer layer on the inner walls; and vapor depositing a metal alkoxide as a barrier on the buffer layer; and vapor depositing an alkali metal/alkaline earth metal compound alone or mixed with metal alkoxide as a decoking layer on the barrier. A decoking layer may further be provided on the diffusion barrier.

    摘要翻译: 在烃热解反应器中在反应管的内壁上直接涂布涂膜以防止内壁上形成和沉积焦炭的方法。 该方法包括以下步骤:在600-900℃的温度下,以1-5000kg / hr /线圈的流速引入载体同时在内壁上蒸镀金属醇盐和铬化合物的混合溶液 在0-3kg / cm2的压力下,在内壁上形成缓冲层; 并在缓冲层上蒸镀金属醇盐作为阻挡层; 并将碱金属/碱土金属化合物与金属醇盐单独或与阻挡层上的脱焦层混合。 还可以在扩散阻挡层上设置除焦层。

    Bismuth molybdate-based catalysts, method of preparing thereof and method of preparing 1,3-butadiene using thereof
    7.
    发明授权
    Bismuth molybdate-based catalysts, method of preparing thereof and method of preparing 1,3-butadiene using thereof 有权
    钼酸铋基催化剂,其制备方法和使用该催化剂制备1,3-丁二烯的方法

    公开(公告)号:US08003840B2

    公开(公告)日:2011-08-23

    申请号:US12297352

    申请日:2007-03-16

    IPC分类号: C07C5/09 C07C5/327

    摘要: This invention relates to a bismuth molybdate catalyst, a preparation method thereof, and a method of preparing 1,3-butadiene using the same, and to a bismuth molybdate catalyst, a preparation method thereof, and a method of preparing 1,3-butadiene using the same, in which 1,3-butadiene can be prepared through oxidative dehydrogenation directly using a C4 mixture including n-butene and n-butane as a reactant in the presence of a mixed-phase bismuth molybdate catalyst including α-bismuth molybdate (Bi2Mo3On) and γ-bismuth molybdate (Bi2MoO6). According to this invention, the C4 raffinate, containing many impurities, is used as a reactant, without an additional n-butane separation process, thus obtaining 1,3-butadiene at high yield. Unlike complicated multicomponent-based metal oxides, the catalyst of the invention has simple constituents and synthesis routes, and can be easily formed through physical mixing, and thus is very advantageous in assuring reproducibility and can be directly applied to commercial processes.

    摘要翻译: 本发明涉及钼酸铋催化剂及其制备方法,以及使用其制备1,3-丁二烯的方法,以及钼酸铋催化剂及其制备方法以及制备1,3-丁二烯的方法 使用它们,其中1,3-丁二烯可以通过氧化脱氢直接使用包含正丁烯和正丁烷的C4混合物作为反应物在钼酸铋钼酸盐混合物存在下进行制备(其中, Bi2Mo3On)和γ-钼酸铋(Bi2MoO6)。 根据本发明,不含额外的正丁烷分离方法,将含有许多杂质的C4萃余液用作反应物,从而以高产率获得1,3-丁二烯。 不同于复合多组分金属氧化物,本发明的催化剂具有简单的组成和合成路线,并且可以通过物理混合容易地形成,因此在确保再现性方面是非常有利的,并且可以直接应用于商业过程。

    BISMUTH MOLYBDATE-BASED CATALYSTS, METHOD OF PREPARING THEREOF AND METHOD OF PREPARING 1,3-BUTADIENE USING THEREOF
    8.
    发明申请
    BISMUTH MOLYBDATE-BASED CATALYSTS, METHOD OF PREPARING THEREOF AND METHOD OF PREPARING 1,3-BUTADIENE USING THEREOF 有权
    BISMUTH MOLYBAST基催化剂及其制备方法及其制备1,3-丁二烯的方法

    公开(公告)号:US20090088594A1

    公开(公告)日:2009-04-02

    申请号:US12297352

    申请日:2007-03-16

    IPC分类号: C07C5/333 B01J23/31

    摘要: This invention relates to a bismuth molybdate catalyst, a preparation method thereof, and a method of preparing 1,3-butadiene using the same, and to a bismuth molybdate catalyst, a preparation method thereof, and a method of preparing 1,3-butadiene using the same, in which 1,3-butadiene can be prepared through oxidative dehydrogenation directly using a C4 mixture including n-butene and n-butane as a reactant in the presence of a mixed-phase bismuth molybdate catalyst including α-bismuth molybdate (Bi2Mo3On) and γ-bismuth molybdate (Bi2MoO6). According to this invention, the C4 raffinate, containing many impurities, is used as a reactant, without an additional n-butane separation process, thus obtaining 1,3-butadiene at high yield. Unlike complicated multicomponent-based metal oxides, the catalyst of the invention has simple constituents and synthesis routes, and can be easily formed through physical mixing, and thus is very advantageous in assuring reproducibility and can be directly applied to commercial processes.

    摘要翻译: 本发明涉及钼酸铋催化剂及其制备方法,以及使用其制备1,3-丁二烯的方法,以及钼酸铋催化剂及其制备方法以及制备1,3-丁二烯的方法 使用相同的方法,其中可以通过氧化脱氢制备1,3-丁二烯,其中包括在包括α-钼酸铋的混合钼酸铋催化剂存在下,使用包含正丁烯和正丁烷的C4混合物作为反应物 Bi2Mo3On)和γ-钼酸铋(Bi2MoO6)。 根据本发明,不含额外的正丁烷分离方法,将含有许多杂质的C4萃余液用作反应物,从而以高产率获得1,3-丁二烯。 不同于复合多组分金属氧化物,本发明的催化剂具有简单的组成和合成路线,并且可以通过物理混合容易地形成,因此在确保再现性方面是非常有利的,并且可以直接应用于商业过程。