Effect of Additives on Potassium Distribution during Rice Straw Combustion

被引：0
作者：
Ma, Xiaoqin [1 ]
Ren, Tianbao [1 ]
Kong, Dechuan [1 ]
Nie, Yongfang [1 ]
Xu, Junpeng [1 ]
Pang, Minghua [1 ]
Xu, Guizhuan [2 ]
机构：
[1] Henan Inst Sci & Technol, Coll Mech & Elect, Xinxiang, Peoples R China
[2] Henan Agr Univ, Key Lab Renewable Energy, Minist Agr, Zhengzhou, Peoples R China
来源：
2011 ASIA-PACIFIC POWER AND ENERGY ENGINEERING CONFERENCE (APPEEC) | 2011年
关键词：
straw; combustion; additives; alkali metals; FLUIDIZED-BED COMBUSTION; AGGLOMERATION;
D O I：
暂无
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：
In order to provide references and bases for solving slag, agglomeration and corrosion problems that occurred during straw combustion, experiments on combustion of pure pulverized rice straw and mixture of pulverized rice straw with additives were carried out in a pilot plant. The additives included CaO, Al-2(SO4)(3)18H(2)O, CaSO4, and (NH4)H2PO4. Ion chromatography as well as XRD analysis have been conducted to measure the potassium content in gas and deposit, water-soluble potassium in bottom ash and phase of bottom ashes. The mechanism of additives on potassium distribution during rice straw combustion has been investigated in detail. The result shows that Al-2(SO4)(3)18H(2)O, CaSO4 and (NH4)H2PO4 can make potassium in raw straw be fixed in components that have high melting points. CaO has not been directly involved in the reaction with alkali metals, but can react to other elements in the system, which enable potassium in the straw to be separated from bottom ash.
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页数：4
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