文献类型：期刊文献

英文题名：Soot elimination and heat recovery of industrial flue gas by heterogeneous condensation

作者：Ma, Liang[1];Zhao, Zhihuang[1];Tian, Chengcheng[1];Wang, Hualin[1];Liu, Yi[1]

机构：[1]East China Univ Sci & Technol, Natl Engn Lab Ind Wastewater Treatment, Shanghai 200237, Peoples R China

年份：2020

卷号：10

期号：1

外文期刊名：SCIENTIFIC REPORTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000529922700001)】；

基金：We would like to express our thanks for the sponsorship of National Key Research and Development Program of China (2016YFC0204500), National Natural Science Foundation of China (21878099, 51608203, 51808225), Shanghai Rising-Star Program (17QB1400300), and Science and Technology Commission of Shanghai Municipality (16dz1206400).

语种：英文

摘要：Industrial flue gas systems include fine soot and high-temperature vapor. The continuous emission of the flue gas not only causes fine particulate pollution but also wastes considerable heat energy. Separating soot and purifying flue gas are of great significance for industrial conditions and environmental protection. In this paper, the process of cyclone soot elimination and waste heat recovery by heterogeneous condensation were coupled for the first time. The effects of the flue gas material system and separation operation parameters on the cyclone soot elimination efficiency and heat transfer efficiency were systematically investigated through unit experiments and industrial side-lines. Additionally, the mechanism of enhanced cyclone soot elimination by heterogeneous condensation was also theoretically explored. The experimental results show that the corresponding maximum cyclone heat transfer efficiency and soot elimination efficiency of the Phi 40 mm cyclone separator are 42.1% and 89.2%, respectively, while the Phi 80 mm cyclone separator can attain an elimination efficiency of 91% and a maximum increase of 67.3% for the heat transfer efficiency, as indicated by the industrial side-line. During the process of cyclone soot elimination and heat recovery by heterogeneous condensation, the heterogeneous condensation caused by heat transfer increases the quality difference between the flue gas molecules and soot droplets, thus improving the cyclone separation efficiency of soot.