摘要
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；Fe2O3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；MgO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.
The effects of raw material particle size,fusing agent addition （CaO,Fe2O3 and MgO）and coal blending ratio on ash fusion characteristics were experimentally studied.The results show that,the ash fusion 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 proportion 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 Fe2O3 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.
出处
《热力发电》
CAS
北大核心
2014年第7期45-49,共5页
Thermal Power Generation
基金
国家自然科学基金(51274147)
国家科技支撑计划(2012BAA04B03)
关键词
型煤
粒度
灰熔融特性
灰溶点
煤灰流动温度
助剂
briquette
particle size
ash fusion characteristic
fusing agent
ash melting point
ash fluid point
作者简介
景瑞军，男，硕士研究生，研读方向为洁净煤技术。E-mail：jingruijun@126．com
