| In this paper, the necessity of stability combustion technique of boiler under low load as well as its current status and prospect is discussed firstly. Stability combustion performance of pulverized coal and stability combustion mechanism and structure performance of burner in country and abroad are analyzed, the emphasis of discourse is upon fundamental and test capability of slot-opening blunt body burner.At the same time,online inspecting system of primary and secondary air speed is chosen to ensure boiler stability combustion under low load and corresponding property experiment was made by means of air-drived test-bed.Finally,slot-opening blunt body burner and online inspecting device of primary and secondary air speed were reconstructed at #7 Boiler of the First Power Plant of Baotou City. The results based on colding condition test,heating condition test and low load test showed that the use of slot-opening blunt body burner and online inspecting device of primary and secondary air speed can ensure stability combustion and improve combustion condition of boiler.Ren Zhaohui(power plant Thermal power engineering) Directed by prof. Sun Baomin...
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