基于AHP-TOPSIS的铝电解槽设计方案优选

Optimization of Aluminum Electrolytic Cell Design Based on AHP-TOPSIS

根据铝电解槽技术特点,从经济、技术和安全3个方面,选取9个评价指标构建了综合评价指标体系;采用层次分析法(AHP)确定各项评价指标的权重系数,再耦合逼近理想解排序法(TOPSIS)建立铝电解槽设计方案优选的综合评价模型;最后,运用该模型针对某400 kt/a的铝锭工程,选取4种初选设计方案进行综合评比,结果表明:电流强度为500 kA的设计方案最优,其次是550 kA和420 kA设计方案,600 kA设计方案最劣。评价结果与实际工程预期相吻合,该方法可应用于铝电解槽设计方案的优选决策。

According to the technical characteristics of aluminum electrolytic cell, 9 evaluation indexes were selected in terms of economic, technical and safety factors to build a comprehensive evaluation index system. Analytical hierarchy process(AHP) was used to determine the weight coefficient of each evaluation index, and then the technique for order preference by similarity to an ideal solution(TOPSIS) was coupled to establish a comprehensive evaluation model for optimization of the design of aluminum electrolytic cell. Finally, this model was applied to the evaluation of a 400 kt/a capacity aluminum ingot project, and four preliminary design schemes were selected for comprehensive evaluation. The results show that the design scheme with a current intensity of 500 kA is the best, followed by the design schemes with 550 kA,420 kA and 600 kA, in which the 600 kA scheme is the worst. It is found that the evaluation results are consistent with the actual project expectations. It is concluded that this method can be applied to the optimization and decision in the design of aluminum electrolytic cells.