Ash deposition on boiler heat exchanger surface is a common phenomenon in fossile fuel powered power plant . this paper focuses on the research building a suitable model of soot deposition status of heat exchanger surface, and constructs a online monitoring system based on the built models . this will provide a reliable foundation to the optimal scheduling of the soot blowers 本文針對鍋爐受熱面灰污染危害嚴重的普遍現(xiàn)象,以北侖電廠600mw1#鍋爐作為研究對象,進行了有關電站鍋爐受熱面灰污染在線監(jiān)測的研究工作,為吹灰優(yōu)化經(jīng)濟運行提供了可靠的依據(jù)。