The safe, reliability and economic operation lie on combustion system of boiler. Take #3 boiler of Niang Zi Guan Power Plant as research object, the technology of "pulverized coal dense-thin separation continuously adjustable burner" is studied. The technology aims at general performance and practice. It is proved by practice that carbon in fly ash is decreased and clinkering is prevented to using the technology. In low load, boiler can operate stably without oil. The technology can be applied in practice.
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