Gas Residence Time Distributions in a Spouted Bed
Gas Residence Time Distributions in a Spouted Bed作者机构：The Key Laboratory of CatalysisChina National Petroleum Co.China University of PetroleumBeijing 102249China
出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)
年 卷 期：2005年第13卷第3期
页 面：291-296页
核心收录：
学科分类：080706[工学-化工过程机械] 08[工学] 0807[工学-动力工程及工程热物理]
主 题：residence time distribution spouted bed
摘 要：In a spouted bed of 80mm in ID and 1700mm in height, the gas residence time distributions at different radial positions in both spout and annular area were measured with five different kinds of particles as spouting material, air as spouting gas, and hydrogen as tracer. The effects of superficial gas velocity, operating pressure, particle size and its category on gas residence time distribution were discussed. It was found that the gas velocity profile in spout was more uniform than that in annulus. It could be concluded that the gas flow in the spout could be treated as a plug-flow, while that in the annulus inhibited a strong non-ideal flow behavior. Increasing the superficial gas velocity and decreasing the operating pressure, the particle density and its size gave rise to spouting disturbance, thus the measured tracer concentrations vs. time curves fluctuated. The variances of residence time distribution curves could be taken as a measure of the gas fluctuation degree.
维普期刊数据库
同方期刊数据库