钙质煤渣脱硫剂与烟气脱硫的试验研究

Experimental Study on Calcareous Ash Desulfurizing Agent and Fuel Gas Desulfurization

利用锅炉本身排出的煤渣作脱硫剂基体核粒 ,配入少量的石灰 ,并加水搅拌均匀 ,使石灰裹覆在煤渣颗粒表面 ,制成具有较大表面积的钙质煤渣脱硫剂 ,并用于烟气脱硫 (干法 )试验。结果表明 :脱硫率最高达 85.5%～ 94.6% ,脱硫率大于 80 %的运行时间达 2 h,脱硫费用约为 0 .33元 / kg( SO2 )

A calcareous coal ash desulfurizing agent with larger surface area was manufactured by using coal ash discharged from boilers as basic particles of the desulfurizing agent,adding a small amount of lime and uniformly mixing them with water to make lime covering over the coal ash particles.Tests were conducted with this desulfurizing agent in the dry process of fuel gas desulfurization,and results showed that its desulfurization rate reached 85.5%—94.6%,the operation time with the desulfurization rate over 80% was up to 2h and the cost for desulfurization was about 0.33yuan/kg(SO2).