The Effect Residence Time and Temperature on the Partition of Heavy Metals during Waste Incineration
The residence time and temperature are the most important factors affecting the vapor metallic compounds partition from the flue gas during waste incineration. In this work, an experiment was carried out to study the influence of temperature and residence time on the partition of heavy and alkali metals. Experimental results showed that the optimum separation temperature for Cu and Zn was 600℃, and 500℃ for Pb. As for alkali metals, 200℃ was the best. The experimental results also indicated that the relation between the partition of heavy and alkali metals and residence time followed the simple first- order rate law. Meanwhile, the rate constant and correlation coefficient for each metal under difierent temperature were calculated. At 400 and 600℃, it was found that the rate constant for Zn and Cu were highest. and the optimum residence time for Zn and Cu separation was 0.15 sec. In the case of 400℃, the optimum residence time for Pb was 0.8 sec. In addition, it was observed that the rate constant and correlation coefficient increased with temperature decreased. The rate constant and correlation coefficient of alkali metals were lower than those of volatile heavy metals.
Alkali metals Flue gas Heavy metal Incineration waste
Masami FURUUCHI Jun HAN Mitsuhiko HATA Guanghui WANG
Graduate School of Natural Science and Technology, Kanazawa University, Ishikawa 920-8667, Japan College of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan, 4
国际会议
北京
英文
63-73
2007-08-20（万方平台首次上网日期，不代表论文的发表时间）