Greater efficiency in a water-alkaline emulsion cumene oxidation process using a cascade of reactors is obtained by splitting the reactor cascade into 2 stages with the first stage utilizing NH4NaCO3 as the active carbonate in the stage containing less than 18% by weight cumene hydroperoxide and using Na2CO3 as the active carbonate in the stage containing more than 18% by weight cumene hydroperoxide. By directly injecting ammonia into a recycle stream organic acids are efficiently neutralized. A counter current water wash of the second stage also increases process efficiency by scrubbing out unwanted impurities. Control of pH in the process improves efficiency and reduces impurity levels.
申请公布号
US5767322(A)
申请公布日期
1998.06.16
申请号
US19960670304
申请日期
1996.06.27
申请人
GENERAL ELECTRIC COMPANY
发明人
ZAKOSHANSKY, VLADIMIR MIKHAILOVICH;GRIAZNOV, ANDREI KONSTANTINOVICH;VASILIEVA, IRINA I.;FULMER, JOHN W.;KIGHT, WILLIAM D.