Abstract:

Problems were found during maintenance such as uneven slagging in modified pitch reaction vessel,partial collapse of deflectors in heater as well as guard wall peel-off from the reaction vessel.By improving the deflectors and adding temperature measuring points for circular tail gas flue,satisfactory results can be achieved,such as the slagging can be minimized at the bottom of the vessel,deflectors inside the heating chamber can be effectively monitored and oil leakage from the reaction vessel can be avoided.