旋流格栅式新型烟气脱硫装置研究

A Study of an Innovative Swirling-flow Grid-type Desulfurizer of Flue-gases

基于喷淋、冲击、自激、旋流的原理,综合了旋流加格栅的特点,以强化气液间的传质。针对影响脱硫效率的主要因素,如液封高度、喷淋液pH值、烟气含湿量及内塔穿孔气速,进行了一系列试验,试验表明,当喷淋量为110.68 m3/h,液封高度调节到1230 mm,烟气的含湿量控制在5.56左右,pH值维持在8～9之间,内塔穿孔气速为14.5 m/s左右时,脱硫效率可达98.5%,是一个较好的工况点。工业应用表明该装置脱硫效率大于97%,设备阻力小于1200 Pa。

On the basis of combining such principles as sprinkling,impingement,self-excitation and swirling flow,integrated were the specific features of a swirling-flow and grid structure so as to intensify the mass transfer between gas and liquid.A series of tests have been performed of such main factors affecting the desulfuration efficiency as sealing liquid height,pH value of sprinkling liquid,flue-gas wetness and inner tower perforation air velocity.The tests indicate that when the sprinkling quantity is 110.68 m3/h,sealing liquid height is set at 1230 mm,humidity of flue gas controlled at about 5.56,pH value kept at a value between 8 and 9 and inner tower perforation air velocity is around 14.5 m/s,the desulfuration efficiency can attain 98.5%,which is a comparatively good operating-condition point.The applications in industry show that the desulfuration efficiency of the device exceeds 97% and the resistance of the device is less than 1200 Pa.