东南大学学报（自然科学版）2024，Vol.54Issue(2)：456-464,9.DOI:10.3969/j.issn.1001-0505.2024.02.024
污泥/煤泥混合燃烧过程中N和S污染物迁移规律
Migration law of N and S pollutants during mixed combustion of sludge/slime
摘要
Abstract
To explore the emission mechanism of N and S pollutants during the mixed combustion of sludge/slime,the migration law of N and S pollutants was studied.Based on the basic generation law of gaseous pol-lutants during mixed combustion of sludge/slime obtained by thermogravimetry-mass spectrometry analyzer,a sludge/slime mixed combustion experimental system was established to study the emission laws of SO2 and NO in the mixed combustion of sludge and slime under different mass fractions of sludge and temperatures.The conversion law of N and S functional groups in the combustion process was studied through X-ray photoelec-tron spectroscopy(XPS)detection of combustion products in four different stages.The results show that the effect of sulfur and nitrogen fixation is the most obvious when the mass fraction of sludge is 40％.With the in-crease of sludge mass fraction,more pyridine nitrogen is converted to pyrrole nitrogen,which increases the yield of HCN and the production of amines and nitriles,resulting in the total NO emission increasing first and then decreasing with the increase of sludge mass fraction.The release of organic sulfur is more complete,the S-containing pollutants produced by combustion increase,and the sulfate content in ash increases simultaneous-ly.Therefore,the total SO2 release changes little with the increase of sludge mass fraction.关键词
污泥/煤泥/混合燃烧/污染物迁移/X射线光电子能谱(XPS)Key words
sludge/slime/mixed combustion/migration of pollutant/X-ray photoelectron spectroscopy(XPS)分类
资源环境引用本文复制引用
时振翔,钟文琪,周冠文..污泥/煤泥混合燃烧过程中N和S污染物迁移规律[J].东南大学学报（自然科学版）,2024,54(2):456-464,9.基金项目
国家自然科学基金资助项目(52106133)、国家自然科学基金山西联合基金资助项目(U1910214). （52106133）
