Major and trace elements in coal bottom ash at different oxy coal combustion conditions

被引：24
作者：
Oboirien, B. O. [1 ]
Thulari, V. [1 ]
North, B. C. [1 ]
机构：
[1] CSIR Mat Sci & Mfg, ZA-0001 Pretoria, South Africa
来源：
APPLIED ENERGY | 2014年 / 129卷
关键词：
Oxy-combustion; Major and trace elements; Coal bottom ash; Oxygen concentration; Temperature; FLUIDIZED-BED; FUEL; BEHAVIOR; MERCURY;
D O I：
10.1016/j.apenergy.2014.04.091
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 paper presents a detailed study on the effect of temperature on the concentration of 27 major and trace elements in bottom ash generated from oxy fuel-combustion. The major elements are Na, Mg, Al, K, Ca and Fe and the minor and trace elements are Li, Cr, V, Mn, Sr, Ba, Cu, Zn, Rb, Co, Ni, Ga, Pb, Be, Mo, U, Ag, Cd, Te, Bi and Ti respectively. The effect of oxygen concentration at two different temperatures on the concentration all the elements was investigated. From the results obtained, the highest level of enrichment for all the elements in the bottom ash was at oxy combustion conditions of 50% O-2 and 50% CO2 at 900 degrees C. An exception was for Fe, Mn and Mo where it was at 21% O-2 and 79% CO2 at 1000 degrees C, 21% O-2 and 79% CO2 at 900 degrees C and 50% O-2 and 50% CO2 1000 degrees C respectively. (C) 2014 Elsevier Ltd. All rights reserved.
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收藏
页码：207 / 216
页数：10
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