A process for the production of phosphoric acid
    3.
    发明公开
    A process for the production of phosphoric acid 失效
    Verfahren zur Erzeugung vonPhosphorsäure。

    公开(公告)号:EP0032407A2

    公开(公告)日:1981-07-22

    申请号:EP81101803.5

    申请日:1978-12-29

    IPC分类号: C01B25/223

    摘要: A starting procedure for the production of phosphoric acid in a multi vessel system comprises filling at least two communicating vessels (16, 28) with phosphoric acid, adding phosphate rock to a third vessel (2) that communicates with one (16) of the two vessels and adding sulphuric acid to the second (28) of the two vessels.
    Fluid is passed from the two vessels to a fourth vessel (48) as the volume of fluid increases by reaction and the generation of foam, and fluid from the fourth vessel is passed to the third vessel. Fluid is also circulated from the first to the second of the two vessels.
    Part of the contents of the second of the two vessels is removed and separated into phosphoric acid and calcium sulphate, part of the phosphoric acid being returned to the third vessel.

    摘要翻译: 用于在多容器系统中生产磷酸的起始方法包括用磷酸填充至少两个连通容器(16,28),将磷酸盐岩添加到与二者中的一个(16)连通的第三容器(2) 容器并向第二(28)个两个容器加入硫酸。 随着流体的体积通过反应和泡沫的产生而增加,流体从两个容器传递到第四个容器(48),并且来自第四个容器的流体被传递到第三个容器。 流体也从两艘船的第一级到第二级流通。 将两个容器中的第二个容器的一部分内容物除去并分离成磷酸和硫酸钙,将一部分磷酸返回到第三容器。