Phase-Plane Invariant Analysis of Pressure Fluctuations in Fluidized Beds

作     者：王晓亮 何榕 Toshiyuki Suda Junichi Sato 

作者机构：Department of Thermal EngineeringTsinghua University Technical Development DepartmentIshikawajima-Harima Heavy Industries Co.Ltd. Yokohama 235-8501Japan 

出 版 物：《Tsinghua Science and Technology》 (清华大学学报（自然科学版（英文版）)

年 卷 期：2007年第12卷第3期

页      面：284-289页

核心收录：

学科分类：08[工学] 0817[工学-化学工程与技术] 081701[工学-化学工程] 

基　　金：the Ishikawajima-Harima Heavy Industries Co.  Ltd.  Japan 

主　　题：pressure fluctuation chaos phase-plane invariant fluidized beds 

摘      要：Partial agglomeration is a major problem in fluidized beds. A chaotic analytical method based on the phase-plane invariant of the pressure fluctuations in the fluidized beds has been used to warn of agglomeration at an early stage. Cold tests （no combustion） and hot tests （combustion） in fluidized beds show that the phase-plane invariant of the pressure fluctuations can distinguish the dynamic behavior of fluidized beds with different flow rates in cold tests. With combustion, when the flow rate was kept constant, agglomeration was detected very early by looking at the phase-plane invariant. The phase-plane invariant can be used to distinguish changes in fluidized beds due to changes in the flow rate, agglomeration, or various other factors. Therefore, this reliable agglomeration early warning system can be used for better control of circulating fluidized beds.