Ammonia decomposition in coal gasification a atmospheres

被引：18

作者：

Chambers, A ^{[1
]}

Yoshii, Y ^{[1
]}

Inada, T ^{[1
]}

Miyamoto, T ^{[1
]}

机构：

[1] HITACHI LTD,HITACHI RES LAB,HITACHI,IBARAKI 31912,JAPAN

来源：

CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 1996年 / 74卷 / 06期

关键词：

hot gas cleanup; ammonia decomposition; coal gasification; ammonia; limestone;

D O I：

10.1002/cjce.5450740616

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Ammonia present in the product gas from coal gasification may increase NOx emissions from IGCC systems. A fixed bed reactor was used to study the effect of calcined limestone (CaO) on NH3 decomposition and reaction of NH3 and NO. Reactions at temperatures to 900 degrees C in helium and in gas compositions typical of air-blown gasifiers were studied. Although CaO enhanced ammonia decomposition in helium, reaction in the gasification atmosphere resulted in the loss of this catalytic activity. Increasing the total pressure further reduced the rate of NH3 decomposition. CaO enhanced conversion of NO to NH3 in gasification atmospheres.

引用

页码：929 / 934

页数：6

共 20 条

[1]

BAJURA RA, 1990, P 9 EPRI C GAS POW P

[2]

Fenimore C.P., 1979, S INT COMBUSTION, V17, P1

[3] AMMONIA DECOMPOSITION IN PRESENCE OF WATER-VAPOR .2. KINETICS OF REACTION ON NICKEL-CATALYST [J].

FRIEDLANDER, AG ;

COURTY, R ;

MONTARNAL, RE .

JOURNAL OF CATALYSIS, 1977, 48 (1-3) :322-332

[4]

FURUSAWA T, 1985, 8TH P INT C FLUID BE, P1095

[5]

HOLMGREN JD, 1975, CHEM ENG PROG, V71, P87

[6]

ISHIHARA M, 1993, J CELL BIOCHEM, P161

[7]

KASAOKA S, 1987, J FUEL SOC JAPAN, V66, P210

[8]

KRISHNAN GN, 1987, DOEMC230872504

[9]

KRISHNAN GN, 1988, DOEMC230872667

[10] AIR GASIFICATION OF PEAT, WOOD AND BROWN COAL IN A PRESSURIZED FLUIDIZED-BED REACTOR .2. FORMATION OF NITROGEN-COMPOUNDS [J].

KURKELA, E ;

STAHLBERG, P .

FUEL PROCESSING TECHNOLOGY, 1992, 31 (01) :23-32

← 1 2 →