-
48浏览
-
0点赞
-
0收藏
-
0分享
-
295下载
-
0评论
-
引用
期刊论文
CATALYTIC CRACKING REACTIONS OF TAR COMPONENTS OVER CIRCULATING ASH OF CFBB
,-0001,():
Coal gasification is one of the key clean coal projects in China. A partial coal gasification of CFBB co-generation cycle process is suggested by Tsinghua University, which takes the hot circulating ash as the heating source to pyrolyze the coal in a steam fiuidized gasifier to generate the coal gas and tar. The coal gas is the fuel of the gas turbine. The char is burnt in the furnace to generate steam. In this process, One of the key technology is to reduce the yield of tar and get more gas. In this paper, the experiment investigation of two main components in tar: benzene and toluene catalytic cracking over three kind of circulating ash particles from CFBB in a fixed bed reactor, is introduced. And the catalytic mechanics is also discussed. The experimental results show circulating ash promote the cracking reactions of tar, the cracking reactions active energy of the reactance decrease compared with that over quartz sand. The temperature needed for same conversion ratio is decreased 80 C to 160 C for different ashes. The cracking gas product is more for ash than for sand. The solid product is coke for both case, which deactivates the ash. While the activity of the ash can be regenerated by burning the coke on the surface of ash particles. The total yield of gas increases.
【免责声明】以下全部内容由[岳光溪]上传于[2004年12月31日 21时06分33秒],版权归原创者所有。本文仅代表作者本人观点,与本网站无关。本网站对文中陈述、观点判断保持中立,不对所包含内容的准确性、可靠性或完整性提供任何明示或暗示的保证。请读者仅作参考,并请自行承担全部责任。
本学者其他成果
同领域成果