热力发电
熱力髮電
열력발전
THERMAL POWER GENERATION
2014年
7期
45-49
,共5页
型煤%粒度%灰熔融特性%灰溶点%煤灰流动温度%助剂
型煤%粒度%灰鎔融特性%灰溶點%煤灰流動溫度%助劑
형매%립도%회용융특성%회용점%매회류동온도%조제
briquette%particle size%ash fusion characteristic%fusing agent%ash melting point%ash fluid point
研究了型煤原料粒度、助剂及配煤对型煤灰熔融特性的影响.结果表明，原料粒度大于3．2 mm的型煤灰熔融温度高于粒度小于3．2 mm 型煤灰熔融温度；型煤中的低灰熔点煤含量在90％~98％之间时，其煤灰流动温度可降至1350℃以下；2种高灰熔点煤中 CaO 添加量分别在8．09％~10．92％和5．01％~8．07％之间时，其煤灰流动温度可降至1350℃以下；Fe2 O3的添加量分别大于9．26％和4．95％时，其煤灰流动温度可降至1350℃以下；Mg O对煤灰流动温度的降低效果不明显；灰中化学组成间反应生成低温共熔物是温度降低的主要原因.
研究瞭型煤原料粒度、助劑及配煤對型煤灰鎔融特性的影響.結果錶明，原料粒度大于3．2 mm的型煤灰鎔融溫度高于粒度小于3．2 mm 型煤灰鎔融溫度；型煤中的低灰鎔點煤含量在90％~98％之間時，其煤灰流動溫度可降至1350℃以下；2種高灰鎔點煤中 CaO 添加量分彆在8．09％~10．92％和5．01％~8．07％之間時，其煤灰流動溫度可降至1350℃以下；Fe2 O3的添加量分彆大于9．26％和4．95％時，其煤灰流動溫度可降至1350℃以下；Mg O對煤灰流動溫度的降低效果不明顯；灰中化學組成間反應生成低溫共鎔物是溫度降低的主要原因.
연구료형매원료립도、조제급배매대형매회용융특성적영향.결과표명，원료립도대우3．2 mm적형매회용융온도고우립도소우3．2 mm 형매회용융온도；형매중적저회용점매함량재90％~98％지간시，기매회류동온도가강지1350℃이하；2충고회용점매중 CaO 첨가량분별재8．09％~10．92％화5．01％~8．07％지간시，기매회류동온도가강지1350℃이하；Fe2 O3적첨가량분별대우9．26％화4．95％시，기매회류동온도가강지1350℃이하；Mg O대매회류동온도적강저효과불명현；회중화학조성간반응생성저온공용물시온도강저적주요원인.
The effects of raw material particle size,fusing agent addition (CaO,Fe2 O3 and MgO)and coal blending ratio on ash fusion characteristics were experimentally studied.The results show that,the ash fu-sion temperature of briquette with raw material particle size larger than 3.2 mm was significantly higher than that with particle size less than 3 .2 mm.The ash fluid point of the briquette can decrease to lower than 1 350 ℃ when (1)the low melting point coal occupied 90% to 98% of the briquettes;(2)the propor-tion of CaO was 8.09% to 10.92% and 5.01% to 8.07% in the two high ash fusion temperature coals;(3) the addition of Fe2 O3 was larger than 9.26% and 4.95%.MgO had little effect on reducing the ash fluid point.The low-melting-point eutectic mixtures formed by reactions between the compounds in ash mainly caused the drop in ash fluid point.
