文献类型：期刊文献

英文题名：Recovery of high-purity NO2 and SO2 products from iron-ore sintering flue gas by distillation: process design, optimization and analysis

作者：Liu, Yingshu[1]; Sun, Ningqi[1]; Li, Ziyi[1]; Xiao, Penny[2]; Xing, Yi[1]; Yang, Xiong[1]; Zhao, Chunyu[1]; Zhang, Chuanzhao[3]; Wang, Haoyu[3]; Yang, Ralph T.[4]; Webley, Paul A.[5]

第一作者：Liu, Yingshu

通讯作者：Li, Ziyi

机构：[1] School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China; [2] Department of Chemical Engineering, The University of Melbourne, Victoria, 3010, Australia; [3] College of Biochemical Engineering, Beijing Union University, Beijing, 100023, China; [4] Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109-2136, United States; [5] Department of Chemical Engineering, Monash University, Victoria, 3800, Australia

第一机构：School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China

通讯机构：[1]School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China

年份：2021

卷号：264

外文期刊名：Separation and Purification Technology

收录：EI(收录号：20210709910863);Scopus(收录号：2-s2.0-85100656545)

语种：英文

外文关键词：Sintering - Product design - Sulfur dioxide - Economic analysis - Metal recovery - Energy utilization - Flues - Flue gases - Gas adsorption - Nitrogen oxides

摘要：High-purity NO2 and SO2 have significant economic values and are widely used in many fields. The large amounts of NO2 and SO2 in industrial flue gases are worthy of recovery for environmental protection and economic benefits. In this work, a dual-column distillation separation process was proposed to further separate and upgrade NO2 and SO2 following a flue gas adsorption capture process. The feasibility of distillation separation of NO2/SO2 from the desorbed gas, and the advantage of liquid-phase feeding way over gas-phase counterpart in terms of lower energy consumption (1286.39 kW) were demonstrated. Key process parameters such as the number of total stages, the feed stage number, the mole flow rate at bottom of column, the reflux ratio and operating pressure for the two columns (15, 6, 16.66 kmol/h, 0.16, 4 bar; 21, 10, 4.43 kmol/h, 0.50, 1 bar) were determined. Heat and mass transfers along the column height as well as the process robustness against feed composition fluctuation indicate its applicability for practical operation and adaptation to industrial needs. An economic analysis shows a significant annual revenue of 14,333.52 thousand USD based on high-purity (>99.5%) SO2 and NO2 products recovered from a typical scale (~1000,000 m3/h) of iron-ore sintering flue gas, not only offsetting the total operating cost of the entire adsorption capture-distillation recovery process but also generating net profit. ? 2021 Elsevier B.V.