Process of converting ethylbenzene to styrene by catalytic
dehydrogenation
    2.
    发明授权
    Process of converting ethylbenzene to styrene by catalytic dehydrogenation 失效
    通过催化脱氢将乙苯转化为苯乙烯的方法

    公开(公告)号:US4287375A

    公开(公告)日:1981-09-01

    申请号:US129460

    申请日:1980-03-11

    CPC分类号: C07C5/333

    摘要: The invention relates to a process of converting ethylbenzene to styrene by catalytic dehydrogenation at temperatures of about 600.degree. C. in the presence of water vapor in a tubular reactor. The heat required for the dehydrogenation is fed to the tubular reactor with a molten salt bath. The dehydrogenation is effected isothermally and in a single stage under atmospheric pressure or preferable under a subatmospheric pressure with a water vapor-ethylbenzene ratio of 1.2 to 1.5 kg of water vapor per kg of ethylbenzene. The temperature of the ethylbenzene-water-vapor mixture entering the tubular reactor is maintained 50.degree. to 100.degree. C. below the temperature of the molten salt bath.

    摘要翻译: 本发明涉及通过在管状反应器中的水蒸气存在下,在约600℃的温度下通过催化脱氢将乙苯转化为苯乙烯的方法。 用熔融盐浴将脱氢所需的热量送入管式反应器。 脱氢是在大气压下在一个阶段中进行的,或在低于大气压的压力下进行,优选的是水蒸气 - 乙苯比为1.2-1.5kg水蒸气/ kg乙苯。 进入管式反应器的乙苯 - 水蒸汽混合物的温度在熔融盐浴的温度以下保持在50℃至100℃。

    Multistage reactor
    3.
    发明授权
    Multistage reactor 失效
    多级反应堆

    公开(公告)号:US4099926A

    公开(公告)日:1978-07-11

    申请号:US624289

    申请日:1975-10-20

    摘要: A plurality of catalyzer beds are arranged in series in a reactor jacket. Associated with each catalyzer bed is a plurality of distributor pipes for supplying a fresh catalyst and a plurality of draining pipes for draining off the used catalyst. In one embodiment, the reactor jacket is rotatable and the plurality of distributor pipes are connected to an upper edge of the catalyzer bed while the plurality of draining pipes are connected to a lower edge of the catalyzer bed so that when the reactor jacket is rotated to a position that tilts the catalyzer beds the used catalyst will drain off. In another embodiment, the lower surface of the catalyzer beds are formed of two pivotable plates which pivot downwardly and away from each other to allow for the draining of the used catalyst. In still another embodiment of the invention, the heat exchangers are mounted below the catalyzer beds, and each catalyzer bed is provided with at least one supporting plate which divides the catalyzer bed into a plurality of sections parallel with the flow of the reactive gas through the catalyzer beds. Suction means may be used to supply catalyst to the catalyzer beds and to drain the used catalyst from the catalyzer beds.

    摘要翻译: 多个催化剂床在反应器夹套中串联布置。 与每个催化剂床相关联的是用于供应新鲜催化剂的多个分配管和用于排出所用催化剂的多个排水管。 在一个实施例中,反应器护套是可旋转的,并且多个分配管连接到催化剂床的上边缘,同时多个排放管连接到催化剂床的下边缘,使得当反应器夹套旋转至 倾斜催化剂床的位置,所用的催化剂将被排出。 在另一个实施方案中,催化剂床的下表面由两个可枢转的板形成,它们向下并相互远离地转动,以便排出所用的催化剂。 在本发明的另一个实施例中,热交换器安装在催化剂床的下方,并且每个催化剂床设置有至少一个支撑板,该支撑板将催化剂床分成与反应气体的流动平行的多个部分, 催化床。 吸附装置可用于向催化剂床提供催化剂并从催化剂床中排出所用的催化剂。

    Support for sheaves of pipe
    4.
    发明授权
    Support for sheaves of pipe 失效
    支撑管道滑轮

    公开(公告)号:US5366188A

    公开(公告)日:1994-11-22

    申请号:US54817

    申请日:1993-04-28

    IPC分类号: B01J19/24 F28F9/013 F16L3/22

    CPC分类号: F28F9/0131 B01J19/2425

    摘要: A support for sheaves of pipe that prevents each pipe (4) individually and each sheaf as a whole from sagging. Each pipe extends through a more or less matching perforation. The support comprises at least two adjacent, parallel, and mutually attached disks (2 or 22) containing perforations (6 or 30) uniformly distributed at an angle of 60.degree. and matching the outer cross-section of the pipe. Every nth perforation in every nth line along one of the major axes (8, 10, & 12 or 24, 26, & 28) of distribution is concentrically expanded into the vicinity of the (n-1)th surrounding perforations (6 or 30), wherein n=2 or 3. The particular expansions (14 or 30) in subsequent disks (2a & 2b or 22a & 22b) are displaced such that every expansion in one disk is coaxial with a perforation (6c or 30b) left in the other disk.

    摘要翻译: 支撑管道,防止每个管道(4)单独和每个捆组件整体下垂。 每个管道穿过或多或少的匹配穿孔。 支撑件包括至少两个相邻的,平行的和相互连接的盘(2或22),其包含以60°的角度均匀分布并与管的外截面相匹配的穿孔(6或30)。 沿着分布的一个主轴(8,10,&12或24,26和28)的每个第n行的每个第n个穿孔同心地扩展到第(n-1)个周围穿孔(6或30)附近 ),其中n = 2或3.随后的盘(2a和2b或22a和22b)中的特定膨胀(14或30)被移位,使得一个盘中的每个膨胀与留下的穿孔(6c或30b)同轴 另一个磁盘。

    Tubular reactor and method
    6.
    发明授权
    Tubular reactor and method 失效
    管式反应器及方法

    公开(公告)号:US5161605A

    公开(公告)日:1992-11-10

    申请号:US573198

    申请日:1990-10-12

    IPC分类号: B01J8/06

    摘要: In a tubular reactor (2) for catalytic chemical gas-phase reactions with symparallel [sic] guidance of the heat-exchanger, a partial stream of the heat-exchanger medium, this partial stream immediately neighboring the inlet side of the tube plate (6), is introduced through a by-pass channel (26) arranged in the center of the bank of tubes (4), by-passing the bank of tubes, and introduced at a point which is downstream to the discharge area of the heat-exchanger. In this way, undersirable severe local cooling in the reaction area of the bank of tubes (4) can be avoided.

    摘要翻译: PCT No.PCT / EP88 / 01146 Sec。 371 1990年10月12日第 102(e)日期1990年10月12日PCT提交1988年12月13日PCT公布。 出版物WO90 / 06807 日期:1982年6月28日。在用于催化化学气相反应的管式反应器(2)中,与热交换器的同时引导,热交换介质的部分流,该部分流紧邻入口 管板(6)的一侧通过设置在管(4)的中心的旁通通道(26)引入,绕过管束,并在下游的点被引入 热交换器的排放面积。 以这种方式,可以避免在管(4)的反应区域中不可靠的局部冷却。