NO emissions in oxy-coal combustion with the addition of steam in an entrained flow reactor

被引：42

作者：

Alvarez, Lucia ^{[1
]}

Riaza, Juan ^{[1
]}

Gil, Maria V. ^{[1
]}

Pevida, Covadonga ^{[1
]}

Pis, Jose J. ^{[1
]}

Rubiera, Fernando ^{[1
]}

机构：

[1] CSIC, Inst Nacl Carbon, E-33080 Oviedo, Spain

来源：

GREENHOUSE GASES-SCIENCE AND TECHNOLOGY | 2011年 / 1卷 / 02期

关键词：

entrained flow reactor; NO emissions; oxy-fuel combustion; pulverized coal; steam addition; REDUCTION-MECHANISM; N-2; FORMATION; HCN; OXIDATION; CHAR; CO2; MIXTURES; AIR; N2O;

D O I：

10.1002/ghg.16

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：

The NO emissions of a semi-anthracite and a high-volatile bituminous coal were studied under oxy-fuel combustion conditions in an entrained flow reactor (EFR). The results obtained under oxy-fuel atmospheres (21% O-2-79% CO2, 30% O-2-70% CO2 and 35% O-2-65% CO2), were compared with those produced in air. The replacement of CO2 by 5, 10, and 20% of steam in the oxy-fuel combustion atmospheres was also evaluated in order to study the wet recirculation of flue gas. The NO emissions during oxy-fuel combustion were lower than those in air-firing, and a slight increasing trend in NO emissions was observed as O-2 concentrations in the oxy-fuel atmospheres increased. Similarly, the NO concentration was reduced by the addition of steam, both under air and under oxy-fuel atmospheres, but no relevant differences between the different steam concentrations were observed. (C) 2011 Society of Chemical Industry and John Wiley & Sons, Ltd

引用

页码：180 / 190

页数：11

共 26 条

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