流化床电化学反应器研究——(I)理论分析、实验及数据处理方法

Study on The Fluidized Bed Electrochemical Reactor (I) Theoretical Analysis Experiment and Data Treatment

本文从理论上分析了流化床电化学反应器中电位波动现象的成因及特性;提出了新的颗粒与溶液界面的导电机理;建立了研究电位波动现象的实验装置和数据处理方法,为发展流化床电化学反应器的理论和实验研究提供了基础.

In this paper,by combining the characteristics of electrochemical reaction with that of the engineering aspects of the fluidized bed, the voltage fluctuation phenomena have been theoretically studied and a new mechanism has been put forward. The main point of the mechanism is that, for a given reaction system, the polarity state on the solid particles surface changes with the degree of fluidized bed expansion. For a certain fluidized bed electrochemical reactor there must be an optimal degree of bed expansion.at which the highest superficial current and space-time yield can be obtained. An experimental apparatus for studying the voltage fluctuations is presented with a side-by-side type reactor, silver particles and AgNO3 solution as the electrolyte. The voltage fluctuation values can be measured with a composite probe and an A/D converter as programmed by computer. The power spectra of voltage fluctuation can be calculated with Fast Fourier Transformation.