碱渣用于模拟烟气湿式脱硫的研究

从脱硫率和脱硫饱和时间两个方面,对碱渣与电石渣的混合脱硫剂进行了实验研究,并采用添加有机酸的方法提高混合脱硫剂的脱硫能力。实验结果表明,碱渣粒度对脱硫率有一定的影响,碱渣粒度<60μm为宜;碱渣与电石渣配比为1∶1时,脱硫率接近纯氢氧化钙的脱硫能力;添加有机酸不仅能提高吸收浆液的脱硫能力,而且有缓冲浆液pH值的作用,二元有机酸的影响比一元酸的影响更为显著;添加了有机酸的吸收浆液的pH值可控制在4.5～5.0左右。

Wet Simulation Flue Gas Desulfurization with Soda-ash Dregs Absorbent

Desulfurization ratio and saturated time were studied for mixture absorbent of calcium carbide and soda-ash dregs whose desulphurization capacity was improved greatly by adding organic acid.Results showed that the granularity of soda ash dregs would affect desulfurization ratio.When ratio of soda-ash dregs to calcium carbide dregs was 1:1,the desulfurization ratio of mixture absorbent was close to that of pure Ca(OH)2.The adding of binary acid was superior to monoacid for desulfurization.