Abstract: This paper introduced a centralized heating project based on co-combustion of coal slime and sludge in CFB boiler. The results of related tests and actual running status were also described. An evaluation on the project was then made based on the results, which indicated the project could lead to great environmental, economic and social benefits. Some suggestions for further promotion of the project were also made in this paper.

Key words: circulating fluidized bed boiler; coal slime; sludge; environmental benefit; economic benefit