The operation principle and progress for metal porous media surface burner are descripted and the manufacture, catalytic combustion, surface-stabilized combustion, state of theory research, and applications for this kind of burner are introduced with the emphasis.

The result is shown that, it can be concluded that the air gradation combustion technology is useful to ensure the lignite steady combustion under lower load, control the emission of NO x and reduce the slagging phenomenon in a six corners tangentially boiler.

Lowering coal quality will influence the stability of combustion seriously,and unstable combustion causes the significant changes of wall temperature in furnace and water level fluctuation in drum.

Focusing on current obvious problems on safe,economical and stable combustion for coal-fired boilers in China,some main reasons affecting safe,stable and economical boiler combustion are analyzed,and some important methods and outlines for the reform of boilers used at present are introduced.

Long-time stable combustion is a big technical problem for W-flame boilers, which fire lambskin from Shaoguan District.