Abstract: Abstract:In FGD technical reformation project of coalfired power plant, the gasgas heater is eliminated, and the original chimney must be reformed for anticorrosion. So a temporary chimney is necessary to ensure the main machine to operate normally during the chimney anticorrosion reformation. Taking the technical reformation project of Huadian Baiyinhua Jinshan Power Generation Company Limited as example, a design method of combined type temporary chimney was introduced. The method of this paper provides a new idea for chimney anticorrosion reformation.

Key words: Keywords:temporary chimney, chimney anticorrosion, scheme selection, design principle, economic technical analysis