Ignition phenomenon of activated carbon bed during the recovery of cyclohexanone-containing solvent and its prevention

Abstract

In the recovery plant for solvent containing cyclohexanone (hereafter called as “anone”). there is a great possibility of heating and further ignition of the activated carbon bed due to the higher reactivity of anone and the catalytic effect of the activated carbon. Some basic experiments were carried out and the possibility of ignition of activated carbon beds and the methods of preventing it were studied. It was found that ignition of activated carbon was caused by the heat of oxidation of anone to CO or CO2. Further, reaction rate constants and activation eneries of the reaction were obtained for several carbons. Effective methods of preventing ignition of activated carbon were conduded to be as follows. © 1990, The Society of Chemical Engineers, Japan. All rights reserved.