摘要:
The present invention relates to a process for the preparation of toluenediamine, in which dinitrotoluene is reacted with hydrogen in the presence of a catalyst. The dinitrotoluene required by this process has a content of carbon dioxide, in either physically dissolved or chemically bonded form, of not more than 0.175 mol %, based on the molar amount of the dinitrotoluene.
摘要:
The invention relates to a data processing system having an installation controller for an installation, where the installation controller is designed to capture process variables, an installation model for calculating simulated process variables using a portion of the captured process variables; and a user interface for outputting the captured process variables and the simulated process variables.
摘要:
The invention describes a stirring device made from a gassing stirrer and a liquid mixer or two liquid mixers, which are arranged on a shaft and each have a feed and at least one exit opening, wherein the exit openings of the gassing stirrer and of the liquid mixer or the liquid mixers are at a distance from one another, the ratio, a/d, of the distance, a, between the exit openings to the diameter, d, of the gassing stirrer or liquid mixer being 0.02 to 0.5 and the ratio, b/d, of the distance, b, between the outer edges to the diameter, d, of the gassing stirrer or liquid mixer being 0.01 to 0.4.
摘要翻译:本发明描述了一种由排气搅拌器和液体混合器或两个液体混合器制成的搅拌装置,它们设置在轴上,每个具有进料和至少一个出口,其中排气搅拌器和液体的出口 混合器或液体混合器彼此间隔一定距离,排气口与吹气搅拌器或液体混合器的直径d之间的距离a的比值a / d为0.02至0.5, b / d之间的距离b,在外边缘与排气搅拌器或液体混合器的直径d之间的距离b为0.01至0.4。