Abstract:

Fly ash storage of large and medium sized thermal power plant is quite substantial. The traditional openair yard is hard to meet the requirements of environmental protection, and conventional semiclosed storage yard to a certain extent reduces the comprehensive utilization value of dry ash.It proposes a scheme of combined closed ash yard which contains a large steel silo of fly ash and a steel archframe closed ash shed.Compared with the outdoor dry ash field solution, the scheme's captalized cost is low.The scheme can effectively solve the environmental pollution in the  procedure of construction and operation of ash yard and significantly improve the level of the comprehensive utilization of fly ash. Its social benefit and economic benefit is remarkable.

Key words:

coalfired power plant, fly ash, ash yard, steel silo, closed ash shed, dust pollution