***Does the recycle hydrogen used in the hydrogenation of aniline affect the hydrogenation of aniline to cyclohexylamine?
Thread Content
Copper catalysts are used for aniline (produced by Jiujiang Huaxiong), while cobalt catalysts are used for cyclohexylamine (produced by Liuhua Group)
It’s not good, because the hydrogenation exhaust gas contains some inert gases and uncondensed low-boiling substances; when it enters the aniline hydrogenation system, there are many reaction impurities, resulting in a poor conversion rate. If the gas is to be used, it needs to be purified.
***The hydrogen used in hydrogenation contains other impurities such as unconverted ***, and its water content is too high; this makes it easy to generate wastewater during the production of cyclohexylamine.
I also think it’s not good; it would be better to use pressure swing adsorption to produce hydrogen in two separate streams, one for the production of aniline and the other for cyclohexylamine； Unified treatment of exhaust gases