INHIBITION OF HYDROGASIFICATION OF BROWN COALS BY MOISTURE - INFLUENCE OF HEATING RATE, TEMPERATURE AND PRESSURE

被引:7
作者
HUTTINGER, KJ
MICHENFELDER, A
机构
[1] Univ Karlsruhe, Inst fuer Chemische, Technik, Karlsruhe, West Ger, Univ Karlsruhe, Inst fuer Chemische Technik, Karlsruhe, West Ger
关键词
CHEMICAL REACTIONS - Hydrogenation - HYDROGEN - Moisture;
D O I
10.1016/0016-2361(85)90400-4
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Two types of Rheinische Braunkohle with different mineral matter contents, each with two different moisture contents plus a coke produced from the coal with the lower ash content, were gasified at total pressures between 0. 2 and 5 MPa with pure or dry hydrogen, hydrogen/water vapour and argon/water vapour mixtures. It was found that increasing the temperature to 950 degree C does not eliminate the inhibiting effect of moisture (in hydrogen) if hydrogen pressure is low approximately equals less than equivalent to 1 MPa. It was also determined that raising the temperature above 850 degree C with a simultaneous increase in pressure up to 5 MPa hydrogen effectively prevented the inhibition by moisture. It was concluded that extremely stable ether bridges are blocking the active sites at the carbon suface and are therefore responsible for the inhibitory effect of moisture in hydrogasification.
引用
收藏
页码:1723 / 1734
页数:12
相关论文
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