Thermogravimetric coupled with Fourier transform infrared analysis study on thermal treatment of monopotassium phosphate residue

In China,safe disposal of hazardous waste is more and more a necessity,urged by rapid economic development.The pyrolysis and combustion characteristics of a residue from producing monopotassium phosphate(monopotassium phosphate residue),considered as a hazardous waste,were studied using a thermogravimetric,coupled with Fourier transform infrared analyzer(TGFTIR).Both pyrolysis and combustion runs can be subdivided into three stages:drying,thermal decomposition,and final devolatilization.The average weight loss rate during fast thermal decomposition stage in pyrolysis is higher than combustion.Acetic acid,methane,pentane,(acetyl)cyclopropane,2,4,6-trichlorophenol,CO,and CO_(2) were distinguished in the pyrolysis process,while CO_(2) was the dominant combustion product.

运行后复合绝缘子硅橡胶伞裙老化特性研究

复合绝缘子在运行过程中受外界环境的多重影响,会发生不同程度的老化。为探究运行后复合绝缘子伞裙老化特性,选取5支运行后复合绝缘子伞裙样品,进行硬度测试、傅里叶红外光谱检测和热重红外联用试验。结果表明:同一片伞裙表层老化程度较里层更为严重,同一支绝缘子上运行于电场强度高的伞裙老化更为严重,老化后的伞裙与未发生老化的伞裙热重红外联用试验生成的气相产物种类未发生变化,但CH4气相产物生成量减少。