黏结性烟煤制备球形活性炭的研究

在煤基球形活性炭的制备过程中,生球预氧化条件很大程度上决定了球形炭的球形度和物化特性。以山西柳林华晋焦煤集团焦煤为原料,研究了活性炭制备过程中预氧化、炭化、活化等工艺参数对活性炭质量的影响。结果表明:预处理温度为200℃,预处理时间3h,炭化终温700℃,炭化升温速率4℃/min,活化温度800℃,活化时间7h时,制得的活性炭球形度完整,物化性能优良,活性炭的碘值为770.18mg/g,亚甲基蓝值为64.24mg/g。随着预处理时间的增加,活性炭的强度和产率都增大。试验结果对煤基球形活性炭的生产具有一定的指导意义。 During the preparation of coal-based spherical activated carbon,the preoxidation condition of green pellet largely decide the sphericility and physicochemical characteristics of spherical active carbon(SAC). Taking the coking coal from Huajin Coking Coal Group in Liulin,Shanxi as raw material,research the influence of preoxidation, carbonization,activation and the like on the characteristics of activated carbon. The results show that under the condition of pretreatment temperature 200 ℃,processing time 3 hours,final carbonization temperature 700 ℃, carbonization heating rate 4 ℃ / min,activation temperature 800 ℃,activation time 7 hours,the active carbon have orbicular sphericity and great physicochemical characteristics. The iodine value of active carbon is 770.18 mg/ g and the iodine adsorption value is 64.24 mg/ g. The intensity and yield of active carbon increase with the length of pretreatment time. The results provide reference for the production of coal-based spherical activated carbon