煤炭转化2025，Vol.48Issue(6)：27-40,14.DOI:10.19726/j.cnki.ebcc.202506003
高温煤焦油-焦油渣复合黏结剂制备高收率优质净水用煤质柱状活性炭的研究
Preparation of coal-based columnar activated carbon with balanced yield and adsorption performance using composite binder of high-temperature coal tar-tar residue
摘要
Abstract
Most coal-based columnar activated carbon use high-temperature coal tar as binder,which not only increases production costs but also affects yield and quality during the carbonization and activation processes,significantly limiting the development of coal-based columnar activated carbon.This study prepared coal-based columnar activated carbon with high yield and good adsorption using anthracite coal powder as the raw material and a composite binder consisting of coal tar and tar residue.Through single-factor experiments and response surface methodology,the effects of the composite binder ratio,composite binder dosage,forming pressure,and carbonization temperature on the yield and adsorption performance of coal-based columnar activated carbon were investigated.The results showed that the optimal process conditions for preparing coal-based columnar activated carbon with balanced yield and adsorption performance were determined through single-factor experiments and response surface methodology.Specifically,under the conditions of a coal tar-to-tar residue ratio of 1.8∶1,a binder dosage of 23%,a forming pressure of 34 MPa,and a carbonization temperature of 620℃,the yield of coal-based columnar activated carbon reached 57.81%±0.87%.Its iodine adsorption value and methylene blue adsorption value were 918±18 mg/g and(196±4)mg/g,respectively,meeting the requirements of the National Standard for Coal-Based Granular Activated Carbon for Water Purification(GB/T 7701-2008).Among the factors studied,the composite binder ratio had the most significant effect on the yield of coal-based columnar activated carbon,followed by carbonization temperature,binder dosage,and forming pressure.Under the optimal conditions,the coal-based columnar activated carbon exhibited a specific surface area of 1 136.9 m2/g,an average pore diameter of 2.288 2 nm,and a pore volume of 0.650 4 cm3/g,demonstrating excellent potential for water treatment applications.关键词
煤质柱状活性炭/煤焦油/焦油渣/收率/吸附性能Key words
coal-based columnar activated carbons/coal tar/tar residue/yield/adsorption performance分类
化学工程引用本文复制引用
吴雷,王嘉伟,杨茸茸,周军,邹冲,朱瑞玉,宋永辉,张秋利,刘田田..高温煤焦油-焦油渣复合黏结剂制备高收率优质净水用煤质柱状活性炭的研究[J].煤炭转化,2025,48(6):27-40,14.基金项目
国家自然科学基金项目(22578348)、陕西省自然科学基础研究计划(2024JC-YBQN-0090)、陕西省教育厅重点科学研究计划项目(24JS028,24JS029)、陕西省教育厅服务地方专项项目(22JC045)、榆林市科技计划项目(CXY-2020-058)和西安建筑科技大学前沿交叉领域培育专项(X20240124). （22578348）
