摘要
讨论了在水蒸气参与下的空气等离子体煤气化过程,结果发现:等离子发生器功率的增加,可以大幅度地提高煤气中H2,CO含量,降低CO2含量,同时也可大幅度地提高碳转化率.在保证进入反应器的煤粒有一定动量的前提下尽量减少空气量;水蒸气输入量适量增加有利于H2含量增加,过量的水蒸气将使碳转化率下降;加大反应器的煤处理量会带来碳转化率的降低;适当条件下煤的转化率可超过95%.气相产物中没有检测到甲烷,同时没有发现液相产物.
The influence of several parameters such as the power input of plasma jet, vapor and air input etc on gas composition and carbon conversion from coal gasification in an air-steam plasma jet was studied.The main gaseous products are H_(2), CO, CO_(2), CH_(4)and tar was discovered._( )The experiment obtained following results: The concentration of H_(2), CO and carbon conversion obviously increases, and the concentration of CO_(2) significantly decreases, when the power input of plasma jet is raised. The concentration of H_(2 )increases when the vapor flux is increased, but excessive steam can decrease carbon conversion. The carbon conversion is enhanced by decreasing feed rate. The air flux should be reduced to improve the quality of coal gas in a certain rang. The carbon conversion of Datong coal can exceed 95% at appropriate condition.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2004年第6期721-725,共5页
Journal of China Coal Society
基金
国家重点基础研究发展规划资助项目(G1999022106)
国家自然科学基金重点项目(19935010)
关键词
煤
等离子体
气化
coal
plasma
gasification
