三氧化硫酸雾气溶胶低温脱除实验研究

Experimental Study on Removal of SO_(3) Acid Mist Aerosol Under Low Temperature

为了分析SO_(3)酸雾气溶胶的脱除特性,研制了SO_(3)酸雾气溶胶的生成装置和脱除装置,并研究了温度、摩尔比、碱性脱除剂种类、入射角度和雾化气体积流量等对脱除效率的影响。结果表明:温度低于52℃时,反应的主要控制因素为化学反应速率,升高温度可以提高化学反应速率,当摩尔比为2,温度从40℃提高至52℃时,脱除效率提高21%;摩尔比在1~3时,增大摩尔比可以提高脱除效率;碱性脱除剂种类对脱除效率无明显影响;雾化气体积流量增加,碱性脱除剂喷雾液滴表面积随之增大;雾化气体积流量为12.5L/min时的脱除效率比雾化气体积流量为7.5L/min时提高10%;与90°入射角度相比,135°入射角度时脱除效率提高13%。

In order to analyze the removal characteristics of SO_(3)acid mist aerosol,a set of device for the formation and removal of the aerosol was developed,and the effects of temperature,molar ratio,types of alkaline sorbents,incident angle and volume flow rate of atomized gas on the removal efficiency were studied.Results show that when the temperature is lower than 52℃,chemical reaction rate acts as the main controlling factor of the reaction,it can increase with the increase of the temperature,and the removal efficiency can increase by 21%when the temperature is raised from 40℃to 52℃and the molar ratio is 2;when the molar ratio is less than 3,the removal efficiency can be improved via increasing the molar ratio;types of alkaline sorbents have no obvious effects on the removal efficiency;the surface area of alkaline sorbent spray droplets increases with the increase of the volume flow rate of atomized gas;the removal efficiency for the volume flow rate of atomized gas of 12.5L/min is 10%higher than that of 7.5L/min;compared with 90°incident angle,the removal efficiency is 13%higher at 135°incident angle.