稻草秸秆-煤基压块活性炭的制备及工艺优化  

Preparation and process optimization of straw stalk-coal based briquetted activated carbon

作　　者：李晶[1] 徐国忠[1] 李扬 张生刚 LI Jing;XU Guozhong;LI Yang;ZHANG Shengang(Engineering Research Center of Coal Chemical Industry Liaoning Province,Professional Innovation Center of Coal Chemical Industry Liaoning,School of Chemical Engineering,University of Science and Technology Liaoning,Anshan 114051,China;Ansteel Chemical Technology Co.,Ltd,Anshan 114003,China)

机构地区：[1]辽宁科技大学化学工程学院,辽宁省煤化工专业技术创新中心,辽宁省煤化工工程研究中心,辽宁鞍山114051 [2]鞍钢化学科技有限公司,辽宁鞍山114003

出　　处：《辽宁科技大学学报》2024年第1期25-31,共7页Journal of University of Science and Technology Liaoning

基　　金：国家自然科学基金资助项目(22378181)。

摘　　要：为降低压块破碎活性炭的制备成本,以稻草秸秆炭和大同不黏煤为主要原料,利用配煤工艺,经过成型、炭化、H_(2)O_((g))-CO_(2)联合活化成型炭制备压块破碎活性炭。采用碘吸附法、亚甲蓝吸附法以及BET、FTIR和Boehm滴定方法测试和表征不同条件下制备的压块破碎活性炭。实验结果表明,加入适量稻草秸秆炭和H_(2)O_((g))-CO_(2)联合活化对活性炭的碘吸附值和亚甲蓝吸附值均有明显提升作用。Boehm滴定结果表明,活性炭具有丰富的酸性和碱性官能团。当活化温度为900℃、活化时间为2.5 h、H_(2)O_((g))和CO_(2)流量比为2时,制备的活性炭的碘吸附值、亚甲蓝吸附值和比表面积分别达到790 mg/g、262 mg/g和809 m^(2)/g。In order to reduce the preparation cost of briquetted crushed activated carbon,the rice straw char-coal and Datong non-caking coal were used as the main raw materials to prepare briquetted carbon through molding,carbonization and H_(2)O_((g))-CO_(2) co-activated molded carbon by coal blending technology.The crushed activated carbon prepared under different conditions were tested and characterized using iodine adsorption method,methylene blue adsorption method,BET,FTIR,and Boehm titration.The results show that the addi-tion of an appropriate amount of straw charcoal and the combined activation of H_(2)O_((g))-CO_(2) have a significant effect on increase of the iodine adsorption value and methylene blue adsorption value of activated carbon.Boehm titration results show that activated carbon is rich in acidic and basic functional groups.The iodine val-ue,methylene blue value,and specific surface area of the activated carbon prepared at an activation temper-ature of 900℃,activation time of 2.5 hours,and a flow rate ratio of H_(2)O_((g))to CO_(2) of 2 reached 790 mg/g,262 mg/g,and 809 m^(2)/g,respectively.

关 键 词：活性炭 比表面积 碘吸附值 

分 类 号：TQ424.1[化学工程]