Process for the long-term operation of a partial oxidation in the gas phase heterogeneamente catalyzed of acroleu00ecna acid acrylic paint

摘要

"Process for the long-term operation of a partial oxidation in the gas phase heterogeneamente catalyzed of acroleu00ecna acid acrylic paint.The invention relates to the long-term operation of a gas phase partial oxidation of acrolein heterogeneamente catalyzed, so as to form acrylic acid.The temperature of the catalyst bed solid increases over time, and the partial oxidation is interrupted and a gas containing oxygen is passed through the catalyst bed solid.Before the temperature reaches 8 198 C.