基于石灰石-石膏湿法脱硫的超低改造技术分析

Ultra-low transformation technologies based on limestone-gypsum wet desulfurization

结合工程实例与试验数据,对比了双塔双循环、单塔双循环、旋汇耦合3种基于石灰石-石膏湿法脱硫技术的特点与处理能力。结果表明:3种脱硫改造技术均能够达到超低排放要求,但分别适用于不同的原烟气SO2浓度条件;双塔双循环、旋汇耦合及单塔双循环的脱硫效率分别达到99.7%、99.2%和99.1%,压损值分别达到3700 Pa、2630 Pa和1700 Pa。

Based on project cases and test data,the characteristics and treatment capacity of three limestone-gypsum wet desulfurization technologies were compared.This three technologies studied are double tower&double cycle technology,single tower&double cycle technology and spin coupling technology.The data showed that these three desulfurization technologies satisfied the ultra-low emission requirement,but they were applicable for flue fas with different SO 2 concentrations.The desulfurization efficiency of double tower&double cycle technology,spin coupling technology and single tower&double cycle technology was 99.7%,99.2%and 99.1%,respectively,and their pressure loss values were 3700 Pa,2630 Pa and 1700 Pa,respectively.