关键词: 煤, 循环液化床, 粉碎功耗, 模型预测, 粒度

Abstract: Aiming at the calculation of energy consumption for CFB fuel comminution, the prediction theory of comminution energy consumption for single-size particles is analyzed based on the summary of research progresses on the energy consumption of comminution. The general correlations in the famous Kick’s hypothesis, Rittinger’s hypothesis and Bond’s hypothesis about the prediction theories of comminution energy consumption are presented. The distribution of particle sizes is introduced into the calculation of energy consumption and the theoretical predictions of the material comminution energy consumptions with different particle size distributions are gained. At the same time, the comminution experiment results indicate that the material property and feed size also play an important role in the comminution energy consumption. Therefore, on the basis of theoretical analysis and derivation, an energy consumption calculation model of coal comminution for CFBs is proposed according to the experiment results.

Key words: coal, CFB, comminution energy consumption, model prediction, particle size