Predicting Instability and Current Efficiency of Industrial Cells

摘要

New statistical models were developed to predict the behavior of industrial potlines. A first model, based on a multiple linear regression analysis, predicts the instability (cell noise) of P155 potlines and is used as a tool to investigate drifts. An example of the usefulness of such a model is presented. A second model that predicts the current efficiency was built using a similar approach. It is based on 10 years of data from 30 potlines. The non-linearity of the relationship between current efficiency (CE) and anode-cathode-distance (ACD) was investigated and confirmed during the course of this study. These current efficiency and instability models provide new ways to anticipate potline performance and to conduct gap analysis.