化学工程2019，Vol.47Issue(3)：7-11,44,6.DOI:10.3969/j.issn.1005-9954.2019.03.002
氨法烟气脱硫塔外氧化技术的模拟与优化
Simulation and optimization of oxidation outside of tower technique in ammonia-based flue gas desulfurization system
摘要
Abstract
Oxidation outside of tower is a new technique in ammonia-based fuel gas desulfurization system, improved from the technique of traditional direct air oxidation. It takes oxidation process to the oxygenizer outside the tower, reducing the gas flow rate in tower and the escape of ammonia in the exiting exhaust gas, and even improving the crystal grain appearance. Rigorous steady-state simulation was processed on the whole flow of the new technology by Aspen plus. Besides, splitting fraction of spray system, pH of absorbent, temperature of exhaust gas and the liquid-gas ratio of enrichment section were redesigned and optimized. The simulation results indicate that the best operation condition for the new process are as follows: splitting fraction of spray system is 0.7, pH of absorbent is 6.1, temperature of exhaust gas is 53 ℃ and liquid-gas ratio of enrichment section is 0.13. Compared with the traditional technology, the new technique can not only decrease the ammonia escape amount up to 50％, but also makes the control scheme demands and the operation more easy and convenient, so that it can accommodate the increasingly stringent environmental requirements.关键词
氨法脱硫/塔外氧化/氨逃逸/Aspen plus/硫酸铵Key words
ammonia-based flue gas desulfurization/oxidation outside of tower/ammonia escape/Aspen plus/ammonium sulfate分类
化学化工引用本文复制引用
李一鸣,刘思思,张健,苑兴洲,张晓欣,封瑞江,邹雄,董宏光..氨法烟气脱硫塔外氧化技术的模拟与优化[J].化学工程,2019,47(3):7-11,44,6.基金项目
辽宁省创新创业改革试点专业建设基金项目 （）
