EXPLORATION ON THE MECHANISM OF COAL DESULFURIZATION USING MICROWAVE IRRADIATION ACID WASHING METHOD

被引：23

作者：

WENG, SH ^{[1
]}

WANG, J ^{[1
]}

机构：

[1] E CHINA UNIV CHEM TECHNOL,DEPT CHEM ENGN ENERGY RESOURCES,SHANGHAI 200237,PEOPLES R CHINA

来源：

FUEL PROCESSING TECHNOLOGY | 1992年 / 31卷 / 03期

关键词：

D O I：

10.1016/0378-3820(92)90022-I

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The transformations of Fe-S compounds intrinsic in coal before and after the microwave irradiation/acid-washing treatment were examined by Mossbauer spectroscopy of Fe-57. The results for phase analyses show that the microwave heating can induce in situ thermo-desulfurizing reactions between pyrite and its surrounding reactants present in coal and that the pyrite was converted into the HCI-soluble species both pyrrhotite Fe1-xS (0 < x less-than-or-equal-to 0.125) and troilite FeS after microwave exposure. A 97% decrease for inorganic sulfur content in coal was achieved by increasing the irradiation time to 100 seconds and combining with successive acid-washing treatment.

引用

页码：233 / 240

页数：8

共 13 条

[1] ENHANCED MAGNETIC SEPARATION OF PYRITE FROM COAL AFTER MICROWAVE-HEATING [J].

BLUHM, DD ;

FANSLOW, GE ;

NELSON, SO .

IEEE TRANSACTIONS ON MAGNETICS, 1986, 22 (06) :1887-1890

[2] MOSSBAUER STUDY OF THE THERMAL-DECOMPOSITION OF FES2 IN COAL [J].

BOMMANNAVAR, AS ;

MONTANO, PA .

FUEL, 1982, 61 (06) :523-528

[3]

FANSLOW GE, 1980, J MICROWAVE POWER EE, V15, P187

[4] MAGNETIC AND MOSSBAUER SPECTROSCOPIC CHARACTERIZATION OF COAL [J].

JACOBS, IS ;

LEVINSON, LM ;

HART, HR .

JOURNAL OF APPLIED PHYSICS, 1978, 49 (03) :1775-1780

[5]

JACOBS IS, 1982, J APPL PHYS, V52, P2730

[6] PRODUCTION OF PYRRHOTITES BY PYRITE REDUCTION [J].

LAMBERT, JM ;

SIMKOVICH, G ;

WALKER, PL .

FUEL, 1980, 59 (10) :687-690

[7] MOSSBAUER STUDY OF DECOMPOSITION OF PYRITE IN HYDROGEN [J].

MONTANO, PA ;

VAISHNAVA, PP ;

KING, JA ;

EISENTROUT, EN .

FUEL, 1981, 60 (08) :712-716

[8] STOICHIOMETRY OF IRON SULFIDES IN LIQUEFACTION RESIDUES AND CORRELATION WITH CONVERSION [J].

MONTANO, PA ;

GRANOFF, B .

FUEL, 1980, 59 (03) :214-216

[9]

NELSON SO, 1980, J MICROWAVE POWER EE, V15, P277

[10] OXIDATION OF PYRITE IN AN ANOXIC ATMOSPHERE [J].

THORPE, AN ;

SENFTLE, FE ;

ALEXANDER, C ;

DULONG, FT ;

LACOUNT, RB ;

FRIEDMAN, S .

FUEL, 1987, 66 (02) :147-153

← 1 2 →