| 摘要 |
<p>A process for producing acrylonitrile comprising the steps of: reacting propylene with ammonia and molecular oxygen in the presence of a catalyst, bringing the reaction gas into contact with a liquid comprising an acid-containing water in a multi-stage rapid-cooling tower having three or more compartments constituting three or more rapid cooling stages, and introducing the liquid brought into contact with the reaction gas in the second stage rapid-cooling section into the first-stage rapid-cooling section. According to the above process, a high-boiling compound can be so efficiently removed as to prevent clogging in the step of recovering acrylonitrile, thus improving the productivity of acrylonitrile.</p> |
