Aiming at the cracking of reactor feed-in pump axes in Methyl Ethyl Ketone unit,failure analyses were performed by material testing,macro feature observation and micro appearance analyses of cracking surface.

Recent reactors for fluid catalytic cracking (FCC) process are introduced,including two-staged reactors in series, dual-riser reactor,down-flow reactor,multiple-staged feeding reactor,and new structures of the inlet and outlet of the riser reactor.

The construction and principles of the oxygen pumping reactor were reported,so were the performance characterization of the solid electrolyte.