化工学报2018，Vol.69Issue(6)：2586-2593,8.DOI:10.11949/j.issn.0438-1157.20171393
多反应器级联的沉铁过程pH优化控制
pH optimization and control in iron removal process of multi-reactor cascade
摘要
Abstract
It is difficult to optimize and control pH in iron removal process, due to multi-reactor cascade, delayed detection of ionic concentration, and frequent change of working conditions. A pH optimization control method was proposed for iron removal process of a multi-reactor cascade. This method set pH in each reactor of the cascade according to classification of inlet conditions and amount of oxygen change. Two key factors, i.e. pH and ferrous ion concentration, were used to establish calcine consumption model by chemical reaction mechanism and process material balance. Considered effects of both complex mechanism and delayed detection of ion concentration on accurate addition of calcine, oxidation-reduction potential (ORP) was introduced and combined with pH to build a modified fuzzy model of calcine consumption. Simulation results show effectiveness of the method, which creates foundation for stable operation of amphibolite iron removal process.关键词
沉铁过程/焙砂/ORP/pH设定值/模糊规则/过程系统/优化/控制Key words
iron removal process/calcine/ORP/pH setpoint/fuzzy rule/process systems/optimization/control分类
矿业与冶金引用本文复制引用
李勇刚,马蕾,伍铁斌,朱红求,阳春华..多反应器级联的沉铁过程pH优化控制[J].化工学报,2018,69(6):2586-2593,8.基金项目
国家自然科学基金项目(61673400,61773403) （61673400,61773403）
湖南省自然科学基金项目(2016JJ3079) （2016JJ3079）
国家自然科学基金创新研究群体科学基金项目(61621062).supported by the National Natural Science Foundation of China(61673400, 61773403), the Natural Science Foundation of Hunan Province(2016JJ3079) and the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (61621062). （61621062）
