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本文从气固流动理论及因次分析两方面研究了循环流化床中主床沿床高方向的压力损失。作者认为，压降及其分布的主要影响因素是气回携带比、气体空截面速度和颗粒浓度分布。本文作者还提出了循环流化床主床压降的计算式；用研究者们不同条件下的关联式或数据进行了验证，结果具有较好的一致性。图６参１２
In this paper, the pressure loss of the main bed along the bed height direction in a circulating fluidized bed was studied from the gas-solid flow theory and the factorial analysis. The author believes that the pressure drop and the distribution of the main factors that affect the gas back to the carrying ratio, gas empty cross-section velocity and particle concentration distribution. The authors also proposed the formula for calculating the pressure drop in the main bed of a circulating fluidized bed. The correlation coefficients or data under different conditions were used to verify the results. The results are in good agreement. Figure 6 参 参 12