EVALUATION OF A NOVEL MIXED PYRITE PYRRHOTITE CATALYST FOR COAL-LIQUEFACTION

被引:12
作者
STANSBERRY, PG
WANN, JP
STEWART, WR
YANG, J
ZONDLO, JW
STILLER, AH
DADYBURJOR, DB
机构
[1] Department of Chemical Engineering, West Virginia University, Morgantown
关键词
COAL LIQUEFACTION; CATALYST; PYRITE;
D O I
10.1016/0016-2361(93)90082-D
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
Iron compounds are known to be active catalysts for direct coal liquefaction. We have synthesized ferric sulfide (Fe2S3) and have used it as a precursor for the preparation of specific mixtures of pyrite and pyrrhotite in intimate contact, to be used as liquefaction catalysts. By varying the gas phase, time and temperature of the disproportionation of ferric sulfide, the relative amounts of pyrite and pyrrhotite are controlled. The effects of the pyrite/pyrrhotite ratio on conversion and yields of coal liquefaction are experimentally evaluated. The coal sample used is a high-volatile bituminous coal, carefully chosen for its very low pyritic sulfur content. A conventional shaken tubing-bomb reactor is used. The best conversion and yield are associated with a presulfided catalyst containing roughly equal amounts of pyrite and pyrrhotite. Increasing the temperature of liquefaction increases the total conversion and significantly increases the selectivity to desired products. Presulfiding has little effect, except at low temperatures and for the catalyst with equal amounts of pyrite and pyrrhotite.
引用
收藏
页码:793 / 796
页数:4
相关论文
共 10 条
[1]   EFFECT OF SULFUR ON COAL-LIQUEFACTION IN THE PRESENCE OF DISPERSED IRON OR MOLYBDENUM CATALYSTS [J].
ANDERSON, RR ;
BOCKRATH, BC .
FUEL, 1984, 63 (03) :329-333
[2]   PYRITE CATALYSIS IN COAL-LIQUEFACTION [J].
GARG, D ;
GIVENS, EN .
INDUSTRIAL & ENGINEERING CHEMISTRY PROCESS DESIGN AND DEVELOPMENT, 1982, 21 (01) :113-117
[3]   PRODUCTION OF PYRRHOTITES BY PYRITE REDUCTION [J].
LAMBERT, JM ;
SIMKOVICH, G ;
WALKER, PL .
FUEL, 1980, 59 (10) :687-690
[4]   COAL-LIQUEFACTION BY COLLOIDAL IRON SULFIDE CATALYST [J].
NAKAO, Y ;
YOKOYAMA, S ;
MAEKAWA, Y ;
KAERIYAMA, K .
FUEL, 1984, 63 (05) :721-722
[5]   THERMOMAGNETIC STUDIES OF IRON COMPOUNDS IN COAL CHAR [J].
RICHARDSON, JT .
FUEL, 1972, 51 (02) :150-+
[6]  
STANSBERRY PG, 1991, NOV AICHE ANN M LOS
[7]   EXISTENCE AND STABILITY OF A SIMPLE SULFIDE OF IRON(III) [J].
STILLER, AH ;
MCCORMICK, BJ ;
RUSSELL, P ;
MONTANO, PA .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1978, 100 (08) :2553-2554
[8]   DECOMPOSITION OF PYRITE UNDER COAL-LIQUEFACTION CONDITIONS - A KINETIC-STUDY [J].
THOMAS, MG ;
PADRICK, TD ;
STOHL, FV ;
STEPHENS, HP .
FUEL, 1982, 61 (08) :761-764
[9]   THE ROLE OF SULFUR IN COAL HYDROLIQUEFACTION [J].
TREWHELLA, MJ ;
GRINT, A .
FUEL, 1987, 66 (10) :1315-1320
[10]  
WARD JC, 1970, REV PURE APPL CHEM, V20, P175