The amine type chemicals ODACON developed by Leipzig Dynamic Energy Research Institute

Germany

has been adopted in boiler conservation after shutdown for unit no.1(350 MW)in Huaneng Nantong Power Plant

the conservation process during period of boiler conservation after unit shutdown being presented

and the utilization situation of chemical agent being expounded.After shutdown of the unit

the metals of steam drum

deaerator

economizer

water-wall

and superheater etc.have been inspected

the protective film formulated on their surface not only being uniform

but also having good insulating property.After using the ODACON

anyharm to start-up of the unit has never been caused

the iron contentin feed-water can reach the required value(less than 10 μg/l)within ten hours after ignition of the boiler.But the operation control during process of conservation is comparatively complex

and the time needed being longer.