The fate of sulphur during oxy-fuel combustion of lignite

被引：83
|
作者：
Fleig, Daniel [1 ]
Normann, Fredrik [1 ]
Andersson, Klas [1 ]
Johnsson, Filip [1 ]
Leckner, Bo [1 ]
机构：
[1] Chalmers, Div Energy Technol, Environm & Energy Dept, S-41296 Gothenburg, Sweden
来源：
GREENHOUSE GAS CONTROL TECHNOLOGIES 9 | 2009年 / 1卷 / 01期
关键词：
oxy-fuel; sulphur; SO(2); SO(3); ash; O-2/CO2 COAL COMBUSTION; HIGH CO2 CONCENTRATION; BOILER DEPOSITS; SO2; LIMESTONE; ASH; GAS; ATMOSPHERE; RETENTION; REMOVAL;
D O I：
10.1016/j.egypro.2009.01.052
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：
This work focuses on the sulphur chemistry in oxy-fuel combustion of lignite. Comparison is made with air-fired conditions, and the main combustion products containing sulphur (ash, SO(2), SO(3) and H(2)S) are examined by modelling and experimental data. The conversion of fuel-S to SO(2) is lower in oxy-fuel than in air-fuel conditions and the SO(2) concentration per unit energy supplied is therefore reduced. The modelling shows that the SO(3) concentration is about four times greater than the concentration in air-firing. High SO(3) and H(2)O contents in the oxy-fuel flue gas during wet recycling increase the acid dew-point by 20 to 30K. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：383 / 390
页数：8
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