鈣基脫硫劑摻加粉煤灰在450℃～850℃下的脫硫研究

　龐亞軍　徐旭常

　　摘要　在沉降爐上進行了摻加粉煤灰提高生石灰煙氣脫硫率的實驗。實驗表明：生石灰摻加粉煤灰可以提高煙氣脫硫率和脫硫劑的鈣利用率。這種作用與反應溫度有關，反應溫度為550℃～700℃時，效果最好。同時也研究了粉煤灰與生石灰摻混方式對氣體脫硫率和脫硫劑的鈣利用率的影響。
　　關鍵詞　沉降爐　生石灰　粉煤灰　脫硫　反應溫度　混合方式
　　中圖分類號　X511

A Study on the Effect of Desulphurization of Calcium Sorbent by the Adding of Pulverized-coal Ash

Pang Yajun
Beijing Electrical Power College
Xu Xuchang
Qinghua University

　　By mixing pulverized-coal ash with caustic lime in a drop-tube furnace tests were conducted for enhancing SO2 removal rate. The test results show that the mixing of caustic lime with the pulverized-coal can result in an enhancement of the　SO2 removal rate and the calcium utilization rate of the calcium-based sorbent. This effect is dependent on the reaction temperature. An optimum effect can be achieved when the reaction temperature ranges from 550℃to 700℃. Also studied was the effect of the mixing mode of pulverized-coal ash with the caustic lime on the SO2 removal rate and the calcium utilization rate of the calcium-based sorbent.
　　Key words: drop-tube furnace, caustic lime, pulverized-coal ash, desulphurization, reaction temperature, mixing mode