SHEN Zhiyuan1, 3 ， YANG Lijun2, 3 ， LIU Mengxi3 ， LU Chunxi3
（1. China Shenhua International Engineering Co.， Ltd.， Beijing 100007， China; 2. China Special Equipment Inspection and Research Institute， Beijing 100013， China; 3. State Key Laboratory of Heavy Oil Processing， China University of Petroleum （Beijing）， Beijing 102249， China）
Abstract： The pressure fluctuation characteristics were investigated in a draft tube-lifted gas-solid air loop reactor （GSALR） by a pressure sensor. The pressure fluctuation characteristics differed in different region of the GSALR. The transition velocity was calculated by two methods based on the absolute pressure and differential pressure signals. The results show that the transition velocity in the draft tube is 0.4 m/s. Pressure fluctuation signals were decoupled using methods suggested in references. In bubbling fluidization regime, the mean bubble size of the draft tube region increases with increasing of the operating superficial velocity, but decreases with increasing of the operating superficial velocity for turbulent fluidization regime. With increasing of the height, the mean bubble size increases in bubblin fluidization regime and increases modestly in turbulent fluidization regime.
Keywords: gas-solid air loop reactor; pressure fluctuation; transition velocity; signal decoupling
中图分类号：TQ051.11 文献标志码：A
文章编号：1008-5548（2014）06-0001-08
DOI:10.13732/j.issn.1008-5548.2014.06.001
收稿日期：2014-07-07， 修回日期：2014-07-19，在线出版时间：2014-12-22。
基金项目：国家重点基础研究发展计划 （973 计 划） 项目， 编号：2012CB215000。
第一作者简介：沈志远（1983— ），女，博士，工程师，研究方向为化工过程机械。 E-mail:13707632@shenhua.cc。
通信作者简介：刘梦溪（1973—） ，男，博士，副研究员，硕士生导师，研究方向为多相流态化、 多相反应器的优化与工程放大。 电 话:010-89733803，E-mail: mengxiliu@sina.com。
