摘要
考察了Fe-Mn复合氧化物脱硫剂的H2-TPR和CO-TPR还原行为,并与氧化铁和氧化锰脱硫剂的还原行为进行比较。结果表明:氧化锰脱硫剂较氧化铁脱硫剂更易被H2还原;焙烧温度从300℃升高到500℃,脱硫剂中氧化锰活性组分还原性变弱,但对氧化铁活性组分还原性影响不大;焙烧温度升高至750℃,脱硫剂还原性变弱。随着脱硫剂中锰相对含量的增大,脱硫剂的还原性变强,还原峰前移。铁锰摩尔比对脱硫剂中氧化铁活性组分的CO-TPR还原行为影响不大,但对活性组分氧化锰的还原行为有一定影响。
Hot gas desulfurization is one of important clean coal techniques which are developed to satisfy harmonious development with environment protection.The sorbents will be concerned with complex desulfurization and reduction reaction due to the existence of H2 and CO in the coal gas.The crystal and valance changes of the sorbent during desulfurization have great impact on the sulphidation and structure of the samples.So,it is very important to understand the physical and chemical properties of the sorbent.TPR ...
出处
《煤化工》
CAS
2009年第5期17-20,共4页
Coal Chemical Industry
基金
国家重点基础研究发展计划"973"项目03课题(No.2005CB221203)
山西省基金委(No.200603022)
太原市科技局(No.070204007)
关键词
高温煤气
脱硫
铁锰脱硫剂
程序升温还原
hot coal gas
desulfurization
Fe-Mn sorbent for desulfurization
TPR
