热力发电
熱力髮電
열력발전
THERMAL POWER GENERATION
2014年
8期
84-88
,共5页
王学斌%魏博%张利孟%谭厚章%徐通模
王學斌%魏博%張利孟%譚厚章%徐通模
왕학빈%위박%장리맹%담후장%서통모
准东煤%碱金属%赋存形态%迁徙特性%温度%SiO2%添加剂
準東煤%堿金屬%賦存形態%遷徙特性%溫度%SiO2%添加劑
준동매%감금속%부존형태%천사특성%온도%SiO2%첨가제
Zhundong coal%alkali metal%occurrence%transformation characteristics%temperature%SiO2%additive
针对准东煤富碱金属和燃烧易结焦的问题，研究了温度和 SiO2添加物对准东煤中碱金属赋存形态及迁徙特性的影响。结果表明：准东煤中Na主要以水溶态存在，而 K、Ca和Mg 主要以不可溶态存在；随成灰温度升高，煤中水溶性 Na 含量显著降低而不可溶性 Na 含量升高；添加SiO2对准东煤中Na具有显著捕集效果，在降低灰中水溶性 Na的同时提高了不可溶性Na含量。
針對準東煤富堿金屬和燃燒易結焦的問題，研究瞭溫度和 SiO2添加物對準東煤中堿金屬賦存形態及遷徙特性的影響。結果錶明：準東煤中Na主要以水溶態存在，而 K、Ca和Mg 主要以不可溶態存在；隨成灰溫度升高，煤中水溶性 Na 含量顯著降低而不可溶性 Na 含量升高；添加SiO2對準東煤中Na具有顯著捕集效果，在降低灰中水溶性 Na的同時提高瞭不可溶性Na含量。
침대준동매부감금속화연소역결초적문제，연구료온도화 SiO2첨가물대준동매중감금속부존형태급천사특성적영향。결과표명：준동매중Na주요이수용태존재，이 K、Ca화Mg 주요이불가용태존재；수성회온도승고，매중수용성 Na 함량현저강저이불가용성 Na 함량승고；첨가SiO2대준동매중Na구유현저포집효과，재강저회중수용성 Na적동시제고료불가용성Na함량。
The Zhundong coal mined in Xinj iang area is rich in alkali metal,resulting in slagging problems during coal combustion.Thus,the effect of temperature and SiO2 additives on alkali metal occurrence and transformation characteristics was investigated.The results show that,the Na in Zhundong coal is mainly water-soluble,whereas the K,Ca and Mg are mainly water-insoluble.As the temperature rising,the content of water-soluble sodium in coal ash reduced significantly,but the content of water-insoluble sodium in-creased.The SiO2 additives can both increase the content of water-insoluble sodium and reduce the content of water-soluble sodium,enabling SiO2 a good ability of sodium capture.
