Aiming at the defects of old type internal combustion hot stove, such as the unstability of the huge wall structure, the easily burning through of the fire wall, easily sinking of trident point of the blast pipe and the unstability of the arch roof, etc, new wall structure and fire wall structure are designed, arch roof with suspended chain line as well as new products .

Explain the significance of improve the sealing and adiabatic character of furnace wall, considering the economics and security of utility boiler; the research of the furnace wall structure can be divided into sealing structure and heat preservation structure; Analyze detailed the difficult point of the sealing.