撞击式泡沫洗涤器的脱硫性能实验研究

Experimental Study on Desulfurization Performance of Impinging Stream Scrubber

采用闭式循环钠碱法脱硫工艺和撞击式泡沫洗涤器技术(动力波技术)对模拟尾气中的SO_(2)进行深度脱除,以SO_(2)脱除效率和系统压降为考察目标,研究气相流量、液气比、液相喷射角度及进口SO_(2)体积分数等因素对处理效果的影响。研究结果表明:脱硫效率随气相流量和进口SO_(2)体积分数增加而降低;脱硫效率随液气比增加而增大,当液气比超过11 L/m^(3)以后,脱硫效率增速减缓,最后趋于稳定;脱硫效率随液相喷射角度的增加起初无明显变化,随后逐渐增大,最后减小,比较合适的喷射角度为15°~20°。系统压降随气相流量和液气比增加而增大,随液相喷射角度增加而先增大后减小。

Closed cycle sodium alkali desulfurization process and impinging steam scrubber technology(dynamic wave technology)were adopted to deeply remove SO_(2)from simulated tail gas.Taking desulfurization efficiency and system pressure drop as the investigation target,the effects of gas phase volume flow rate,liquid to gas ratio,liquid phase injection angle and inlet SO_(2)volume fraction on desulfurization efficiency and pressure drop of impinging stream scrubber were studied.The research results indicate that the desulfurization efficiency decreases with the increase of gas-phase flow rate and inlet SO_(2)volume fraction.The desulfurization efficiency increases with the increase of liquid to gas ratio.When the liquid to gas ratio exceeds 11 L/m^(3),the growth rate slows down and finally stabilizes.As the liquid phase injection angle increases,the desulfurization efficiency initially shows no significant change,then gradually increases and finally decreased.The suitable injection angle is 15°~20°.The pressure drop of the system increases with the increase of gas flow rate and liquid to gas ratio,and first increases and then decreases with the increase of liquid injection angle.