Taking supercritical unit in Shenhua Hebei Guohua Huanghua Power Plant as an example

the protection range

dosing equipment

dosing conditions

matters needing to pay attention

dosing procedure

effects evaluation

as well as cold flushing and hot flushing during complete set start-up

and the reasonable time for condensate polishing treatment have been presented in detail for carrying out octadecylamine(ODA) shutdown conservation after steam blowout of the newly constructed units.Results of inspection after shutdown

as well as results of cold and hot flushing during the process of units start-up show that the formed protective film has remarkable hydrophobicity

and has long time in spot-out test using copper sulfate

the ODA content and iron content in process of cold and hot flushing are rapidly up to set standard

th ODA shutdown conservation method has excellent effectiveness in shutdown conservation.