The problems before the reconstruction of the drying tower and alkali subsider were analysed.

Analysis of coking mechanisms in residue fluid catalytic cracking disengagers;

Research progress of coking in disengagers of resid fluid catalytic cracking units;

Impact of fast separator construction of FCC riser reactor on oil vapor residence time in disengager

Transformation of the settler in a 140×10~4t /a heavy oil catalysis-cracking plant;

During the maintenance when the unit was shut down,3 leaking holes were found in the cyclone riser in the settler vessel,which resulted in the off-specification of sol- id in slurry.

A micro-vortex settler with corrugated inclined troughs,which has been used for the clarification of filtrate from non-cloth vacuum rotary filter in several Chinese sugar mills,is introduced in this paper.

The numerical simulation of turbulent flow in a FCC disengager was carried out.

A full-size numerical simulation of the flow in FCC disengager with diversion section was carried out by applying RNG k-ε model,stochastic tracking model and Eulerian-Eulerian multiphase model.

Presents the structure and process characteristics of the electrical precipitator, a key equipment of 60kt/a sulfuric alkylationplant with the imported STRATCO process,explains and checks its inner installation requirements, points out the problems of the electrical precipitator existed before 1997, and proposes detailed measures for improvement.