论文部分内容阅读
旋风分离器是循环流化床锅炉的关键部件之一,其分离性能将直接影响整个循环流化床锅炉的总体设计及锅炉的运行性能.大型循环流化床锅炉采用多个旋风分离器与炉膛出口并联布置实现气固分离.研究其分离系统的气固两相流动特性可进行旋风分离器的分离性能分析。本文针对600 MW超临界循环流化床锅炉的冷态模型,采用电容层析成像测量技术进行旋风分离器入口烟道内气田两相流固相颗粒浓度测量,在不同床料量和炉膛表观风速下,研究多个旋风分离器入口固体颗粒分布特性,得到不同分离器入口处固体颗粒浓度随流化风速、初始物料量的变化,分析了电容原始信号的波动特性,研究结果对流化床大型化多分离器优化布置提供了支持.
Cyclone separator is one of the key components of circulating fluidized bed boiler, its separation performance will directly affect the overall design of the circulating fluidized bed boiler and boiler operating performance. Large circulating fluidized bed boiler using multiple cyclones and furnace Outlet parallel to achieve gas-solid separation.Study the gas-solid two-phase flow characteristics of the separation system can be separated cyclone performance analysis. In this paper, for the cold model of 600 MW supercritical circulating fluidized bed boiler, the solid phase particle concentration of the gas field two-phase flow in the inlet flue gas duct of the cyclone separator was measured by capacitance tomography. The characteristics of the solid particle distribution at the entrance of multiple cyclone separators were studied. The variation of solid particle concentration at the inlet of different separators with the flow velocity and the initial mass of the material was analyzed. The fluctuation characteristics of the original signal of the capacitor were analyzed. Multi-splitter optimization arrangement provides support.