摘要
着重研究了在高入口颗粒浓度下方形分离器的分离机理。试验证实：在入口颗粒浓度较高时，颗粒的分离机理远远不同于低入口颗粒浓度下的分离机理。在入口颗粒浓度较高时，有即时分离现象存在，这在旋风分离器的试验中也曾得到证实。这种现象与气流所能携带的饱和夹带量有关，超过气流饱和夹带的部分在分离器进口处即被分离。在大量试验数据分析的基础上，给出了相应的新的极限负荷计算公式和分离效率计算公式。实践证明：即时分离理论可用于指导循环流化床锅炉方形分离器的设计和研究工作。图５表２参７。
Abstract This paper mainly studies on the separation mechanism of square separator. It is testified that the separation mechanism at high inlet solid concentration is quite different from that at low inlet solid concentration. At high inlet solid concentration, there exists a phenomenon called immediate separation which also exists in conventional cyclone. It is related to the saturation entainment of gas solid flow, and the part exceeding saturation entrainment will be separated immediately after entering the separator. And new equations for saturation entrainment and separation efficiency are proposed. It is proved that immediate separation theory can be used in advising square separator designing and researching in circulating fluidized bed boiler.
出处
《动力工程》
EI
CSCD
1998年第3期49-54,48,共7页
Power Engineering
基金
国家自然科学基金
