煤质技术2024，Vol.39Issue(4)：1-7,39,8.DOI:10.3969/j.issn.1007-7677.2024.04.001
粉煤低温等离子体氧化过程效率及模型构建研究
Research on the process efficiency and model building of low temperature plasma oxidation of pulverized coal
摘要
Abstract
Low temperature oxygen plasma oxidation is an important pretreatment technology for studying the occur-rence of coal minerals.However,it has problems such as slow ashing reaction rate and low process efficiency.Opti-mization research is needed for the operating parameters of the equipment,especially focusing on the reaction process mode and reaction rate control factors between plasma and coal powder to improve ashing efficiency.Using plasma equipment to ashing typical gas-fat coal,with single ashing time and equipment electrical parameters as operating var-iables,the relationship between reaction rate,ashing time,and organic matter content was investigated.The plasma equivalent reaction depth,velocity control equation,and oxidation process efficiency optimization were analyzed,and a coal powder plasma oxidation process model was established.Within the equivalent reaction depth,when the organic matter content is less than 0.3 g/g,it enters the reduced rate ashing stage.Therefore,it is necessary to opti-mize the operation process to ensure that the overall ashing speed remains constant,thereby improving the ashing effi-ciency.A comprehensive ashing rate control plan for gas fertilizer coal was developed,single ashing times would be set at 8、4、2 and 1 hour when organic matter content is＞0.69、0.69～＞0.57、0.57～0.46 and＜0.46 respectively.关键词
低温等离子体/氧化过程效率/模型构建/灰化时间/有机质含量/煤中矿物/反应深度/速度控制方程Key words
low-temperature plasma/efficiency of oxidation process/model construction/ashing time/organic matter content/minerals in coal/depth of reaction/speed control equation分类
能源与动力引用本文复制引用
单毅,丁华,白向飞..粉煤低温等离子体氧化过程效率及模型构建研究[J].煤质技术,2024,39(4):1-7,39,8.基金项目
国家自然科学基金重点资助项目(42030807) （42030807）
