新型阳极焙烧炉内挥发分逸出特性研究  

Study on the emission characteristics of volatiles in an innovative baking furnace for carbon anode production

作　　者：杨震 廖胜明[1] 饶政华[1] 杨程 吴志刚 陈红 Yang Zhen;Liao Sheng-ming;Rao Zheng-hua;Yang Cheng;Wu Zhi-gang;Chen Hong(School of Energy Science and Engineering,Central South University,Hunan Changsha 410083,China;Changning Carbon Co.,Ltd.,Hunan Changsha 410625,China)

机构地区：[1]中南大学能源科学与工程学院,湖南长沙410083 [2]长宁炭素股份有限公司,湖南长沙410625

出　　处：《炭素技术》2022年第3期13-18,共6页Carbon Techniques

摘　　要：采用数值模拟方法对一种新型阳极焙烧炉阳极挥发分逸出特性进行研究,分别考察了焙烧过程中氢气、甲烷、沥青析出的瞬态浓度分布,得到挥发分随温升逸出规律。对填充细砂孔隙率和燃气的流速进行敏感性分析发现,随着填充细砂孔隙率的增加,阳极焙烧温度逐渐下降;孔隙率从0.20增加到0.35,阳极炭块内的平均最大温差从70.6℃增至79.5℃,产品能耗从1.325 MJ/t增加到1.358 MJ/t。燃气流速从5 m/s增加到12.5 m/s,阳极炭块的温升速率呈现下降趋势,阳极炭块内的平均最大温差从75.1℃降至72.5℃。The emission characteristics of volatiles from an innovative baking furnace for carbon anode production are studied by numerical simulation. The distribution of instantaneous concentration of hydrogen, methane and asphalt in the baking process is investigated, and the law of volatiles escaping with temperature rise is obtained. The sensitivity analysis of porosity and gas velocity of fine sand show that the baking temperature of anode decreases with the increase of porosity of fine sand. The porosity increases from0.20 to 0.35, the average maximum temperature difference increases from 70.6 ℃ to 79.5 ℃, and the energy consumption increases from 1.325 MJ/t to 1.358 MJ/t. When the gas flow rate increases from 5 m/s to 12.5 m/s, the temperature rise rate of the anode carbon block shows a decreasing trend, and the average maximum temperature difference in the anode carbon block decreases from 75.1℃ to 72.5 ℃.

关 键 词：炭素阳极 新型焙烧炉 数值仿真 挥发分 

分 类 号：TQ127.11[化学工程—无机化工]