Process for the adiabatic preparation of mononitrohalogenobenzenes
    11.
    发明授权
    Process for the adiabatic preparation of mononitrohalogenobenzenes 失效
    绝热制备单硝基卤代苯的工艺

    公开(公告)号:US5714647A

    公开(公告)日:1998-02-03

    申请号:US785577

    申请日:1997-01-21

    CPC分类号: C07C201/08

    摘要: Mononitrohalogenobenzenes can be prepared by mixing halogenobenzene, nitric acid, sulphuric acid and water intensively with one another, simultaneously or in succession in their total quantity, and by redispersing them at least twice in the case of continuous preparation, applying a mixing energy of 1-40 watts per liter of the overall reaction mixture, preferably 3-30 W/l, largely suppressing back-mixing in the continuous procedure, and observing adiabatic reaction conditions.

    摘要翻译: 一硝基卤代苯可以通过将卤代苯,硝酸,硫酸和水彼此同时或相继地以总量相互重叠混合,并且在连续制备的情况下将它们再分散至少两次来制备, 总体反应混合物为40瓦/升,优选为3-30W / l,在连续方法中大大抑制了反混合,并且观察绝热反应条件。

    Process for the adiabatic preparation of mononitrotoluenes
    12.
    发明授权
    Process for the adiabatic preparation of mononitrotoluenes 失效
    制备单硝基甲苯的绝热方法

    公开(公告)号:US5648565A

    公开(公告)日:1997-07-15

    申请号:US679323

    申请日:1996-07-12

    CPC分类号: C07C201/08

    摘要: Mononitrotoluenes can be prepared by intensively mixing together toluene, nitric acid, sulphuric acid and water, simultaneously or successively in their total amount, and, in the case of continuous preparation, redispersing the mixture at least twice, for which purpose a mixing energy of 1 to 40 watts per liter of the total reaction mixture, preferably 3 to 30 W/l, is employed per volume of the reactor, and, for the continuous procedure, the back mixing is substantially repressed. Adiabatic reaction conditions are maintained.

    摘要翻译: 单硝基甲苯可以通过将甲苯,硝酸,硫酸和水同时或相继浓缩在一起而制备,并且在连续制备的情况下,将混合物再分散至少两次,为此目的的混合能量为1 至40瓦/升的总反应混合物,优选3至30W / l,并​​且对于连续方法,背混合基本上被压制。 保持绝热反应条件。

    Method for regulating the flow of liquid through mass transfer columns
    14.
    发明授权
    Method for regulating the flow of liquid through mass transfer columns 失效
    调节液体通过传质柱流动的方法

    公开(公告)号:US4045190A

    公开(公告)日:1977-08-30

    申请号:US476830

    申请日:1974-06-06

    IPC分类号: B01D3/16 B01D3/20 B01D47/02

    CPC分类号: B01D3/20

    摘要: A method is provided for controlling the flow of liquid through a column separated by vertically spaced plates into compartments to determine the height of liquid on a plate wherein the liquid is flowed through tubes from compartment to compartment and the rate of flow through the tubes is regulated by a throttle valve responsive to gas pressure below a plate or to the height of liquid in a compartment.

    摘要翻译: 提供了一种方法,用于控制液体通过由垂直间隔开的板分隔成隔室的塔流,以确定板上的液体的高度,其中液体从隔室流向隔室,流经管的流速被调节 通过响应于板下方的气体压力或隔室中液体的高度的节流阀。