Formation of Hydrodynamic Structure of Fluidized Bed Optimal for Burning Fuels with High Volatile Matter Content, Based on Results of External Heat Exchange Local Coefficients Study

摘要

The object of the present study is to form a hydrodynamic structure of fluidized bed optimal for burning fuels with high volatile matter content, i.e. the structure eliminating gas slippage into the furnace freeboard prior to complete gas combustion. Based on results of a study of a local heat exchange between the fluidized bed and a heat exchange member immersed therein, it has been determined that an optimal hydrodynamic structure of the bed can be formed by using a lattice supplying the major portion of air near the furnace wall. The above conclusion was confirmed by experiments using a real furnace with a fluidized bed.