基于分层分块结构的流程工业过程运行状态评价及非优原因追溯

过程运行状态评价是指在安全生产的前提下，对过程运行性能优劣程度做出评判，并对非优运行状态追溯原因，以指导操作人员进行生产调整.针对含不确定性的流程工业过程运行状态评价问题，本文提出分层分块评价结构.同时，考虑到实际生产过程中大量存在的不确定性信息，采用粗糙集对每个子模型进行建模，建立过程变量、工艺指标与综合评价指标间的关系.最后，将所提方法应用于一个金湿法冶金过程中，验证所提方法有效性.

Plant-wide Process Operating Performance Assessment and Non-optimal Cause Identification Based on Hierarchical Multi-block Structure

Process operating performance assessment may determine the operating optimality degree and identify the cause of non-optimal operating performance, thus providing guidance for production adjustment. For the plant-wide process uncertainty, a novel hierarchical multi-block assessment framework is proposed in this paper. Due to the widely existing uncertainties in the plant-wide processes, the rough set is utilized to build an assessment model of each sub-block. The relations between process variables, technical indices and the comprehensive assessment index are extracted. Finally, the proposed method is applied to a gold hydrometallurgy process to illustrate its validity and feasibility.