Abstract: Based on a cold CFB model, the effect of horizontal orifice areas of Loop Seal on performance was studied in detail. The resistance properties across orifice were obtained under its different operational conditions. An empirical relation between the pressure drop across horizontal orifice and solids circulating flow rate was proposed and a new orifice discharging coefficient was also defined according to the experimental results and theoretical analysis. These will provide a sound basis for the optimum design and operation of Loop Seal.

摘要： 通过冷态试验详细研究了环流料封阀水平孔口面积对返料特性的影响,获得了不同条件下环流料封阀水平孔口的阻力特性.根据试验结果和理论分析建立了水平孔口压差与通过孔口处的固体流率之间的经验关系式.定义了孔口流量系数新的关系式.这将为环流料封阀的设计与运行提供依据.