化工进展2018，Vol.37Issue(5)：1760-1766,7.DOI:10.16085/j.issn.1000-6613.2017-1394
燃烧用高碱煤气相NaCl硫酸化途径的反应动力学计算
Reaction kinetics calculations of gaseous NaCl sulfation pathway when burning high alkali coal
摘要
Abstract
In order to study the sulfation paths of gaseous sodium chloride in high alkali coal flue gas and the factors influencing the sulfation ratio,the sulfation process of gas sodium chloride in flue gas under different working conditions was calculated based on the chemical reaction kinetics theory. Each reaction in the system was analyzed by using the rate of production(ROP)method. The results showed that the gaseous sodium chloride was mainly sulfated by formation of NaHSO4and NaSO4and both of them can be formed by several paths. The sulfation paths of NaCl in middle temperature region was more than that in the high temperature region for the reason that more gaseous sodium species can stably exist in the medium temperature,while the decomposition rate of NaO2and NaSO3Cl was higher in the high temperature region. Increasing excess air coefficient, coal sulfur content and coal moisture content will promote the sulfation process of gaseous sodium chloride, while increasing the flue gas temperature will significantly decrease the sulfation ratio of gaseous sodium chloride mainly due to that the decomposition rate of gaseous sodium species increased under the high temperature region, leading to the decrease of sulfation paths.关键词
煤燃烧/高碱煤/氧化钠/三氧化硫/气相硫酸化/反应动力学Key words
coal combustion/high alkali coal/sodium chloride(NaCl)/sulfur trioxide(SO3)/gaseous sulfation/reaction kinetics分类
能源科技引用本文复制引用
肖海平,祁超,孙保民..燃烧用高碱煤气相NaCl硫酸化途径的反应动力学计算[J].化工进展,2018,37(5):1760-1766,7.基金项目
中央高校基本科研业务费专项(2017MS076)及国家自然科学基金(51206047)项目. （2017MS076）
