METHOD OF CONTROL OF CATALYTIC CRACKING PROCESS OF HYDROCARBON RAW MATERIALS IN FLUIDIZED BED Russian patent published in 1999 - IPC

FIELD: process of catalytic cracking of hydrocarbon raw materials in fluidized beds; applicable in apparatuses with fluidized bed. SUBSTANCE: in directly connected cyclone system with ascending current, cyclone is located outside of reactor chamber. Separated catalyst from cyclone separator with ascending current is directed to desorber located inside the reactor chamber. means are provided for removal of desorbing gas from catalyst desorber and its supply under regulated pressure to cyclone separator with ascending current. Maintained in cyclone separator with ascending current is constant pressure with respect to catalyst desorber. Discharge of desorbed gas from reactor chamber is alleviated due to building up and maintaining constant pressure gradient between chamber of vertical cyclone and reactor chamber. Invention is especially useful in modernization of cyclone separator connected to existing reactor chamber with limited free volume. EFFECT: higher efficiency. 5 cl, 1 dwg