化工学报2019，Vol.70Issue(z1)：35-44,10.DOI:10.11949/j.issn.0438⁃1157.20180914
氯碱电解槽内压力波动的混沌分析及流型识别
Chaotic analysis of pressure fluctuation and identification of flow regime in chlor-alkali electrolyzer
摘要
Abstract
In order to clarify the pressure fluctuation characteristics and flow patterns of the gas-liquid two-phase flow in the chlor-alkali electrolyzer, the pressure signals at the upper opening of the recirculation plate in the anode chamber of a cold-model electrolyzer were analyzed by using chaos method. The flow patterns were identified by the Kolmogorov entropy descending method and the pictures taken by a high-speed camera. The flow pattern maps were drawn. The flow patterns under different current densities were determined. The results show that, the attractors of pressure signal of electrolyzer have fractional dimension. The values of Lyapunov exponent are greater than 0 when the current density exceeds 6 kA·m-2. These results demonstrate the gas-liquid two-phase flow in the electrolyzer has chaotic characteristics. For the position of the upper opening of the circulation plate and the lower section of the electrolyzer, the fully developed section of the jet flow and the isolated bubble flow appear when the current density is less than 5 kA·m-2. The transition section of the jet flow and combined bubble flow appear when the current density is 5－8 kA·m-2. The initial section of the jet flow and combined bubble flow appear when the current density is greater than 8 kA·m-2.关键词
氯碱工业/电解/化学反应器/气液两相流/压力信号/混沌/流型Key words
chlor-alkali industry/ electrolysis/ chemical reactors/ gas-liquid two-phase flow/ pressure signal/chaos/ flow pattern分类
化学化工引用本文复制引用
张丽,由钢,乔霄峰,许光文,刘国桢,刘云义..氯碱电解槽内压力波动的混沌分析及流型识别[J].化工学报,2019,70(z1):35-44,10.基金项目
多相复杂系统国家重点实验室开放课题项目(MPCS2017D11) （MPCS2017D11）
辽宁省自然科学基金项目(201602596) （201602596）
辽宁省博士科研启动基金项目(201601195) （201601195）
沈阳市科技计划项目(17-231-1-23) （17-231-1-23）
