煤在H_2/Ar等离子体热解过程中脱氮脱硫的研究  

Denitrogenation and desulphurization during hydropyrolysis of coal in H_2/Ar plasma jet

作　　者：鲍卫仁[1] 章劲草[1] 申曙光[1] 曹青[1] 吕永康[1] 

机构地区：[1]太原理工大学煤科学与技术教育部和山西省重点实验室,山西太原030024

出　　处：《煤炭学报》2007年第3期296-299,共4页Journal of China Coal Society

基　　金：国家重点基础研究发展规划"973"基金资助项目(2005CB221202);山西省科技攻关基金资助项目(051161)

摘　　要：对几种中国煤在H2/Ar等离子体热解过程中的脱氮脱硫进行了实验研究,结果表明:煤中氮在H2/Ar等离子体热解过程中主要以HCN形式存在,也有少量氮转化为NH3,脱氮率最高达50%;HCN的产率随煤种和输煤速率的变化而变化,NH3的产率随输煤速率的增大变化不大,与煤种没有一定的对应关系;HCN的产率大于煤常规加氢热解,而NH3产率(<1.5%)则相反;煤中氧含量较高时,HCN和NH3的产率较低;煤中硫转化生成的H2S产率随输煤速率的变化而变化,脱硫率最高达60%左右,煤等离子体热解反应后得到的焦样n(N)/n(C)和n(S)/n(C)都小于原煤.The denitrogenation and desulphurization during hydropyrolysis of six Chinese coals were systematically investigated in H2/Ar plasma jet.The results from experiments show that HCN is the main product of coal-N at high temperature.Only low amount of NH3 is formed.Yield of HCN depends on coal types and coal feeding rate,but NH3 doesn't change obviously.Yields of HCN and NH3 decrease with the increase of oxygen contents in coal during hydropyrolysis in H2/Ar plasma jet.The change of feeding rate affects signif...

关 键 词：煤 等离子体 加氢热解 脱氮 脱硫 

分 类 号：X701.3[环境科学与工程—环境工程]