钢渣湿法脱硫试验研究

以某厂钢渣为吸收剂,以旋流板塔为吸收器,对湿法脱硫进行了试验研究。通过分析钢渣脱硫前后的化学成分变化,以及试验脱硫率随反应过程的变化,提出了钢渣湿法脱硫的反应机理。同时,试验研究了液气比、进气SO_2浓度、浆液浓度等主要参数对脱硫率的影响,以及加添加剂的效果。试验结果表明,通过合理的设计和适当的操作,可使钢渣湿法应用于中低脱硫率(50％～70％)的场合,以取得综合治理、以废治废的效果。

EXPERIMENTAL STUDY ON WET FLUE GAS DESULFURIZATION WITH STEEL WORK'S DUST AS ABSORBENT

Wet flue gas desulfurization (FGD) process by using steel work's dust as absorbent has been studied experimentally, meanwhile, the rotating-stream tray(RST) absorber is used in this process. By analysing the change of some chemical composition content in steel work' s dust after reaction, and the change of sulfur dioxide removal efficiency with the reaction process time from the experimental results, we propose the reaction and process mechanism. Meanwhile, some important factors affecting removal efficiency are studied, which include liquid - to- gas ratio, SO2 concentration in inlet flue gas and solid content in slurry. In addition, the organic waste referred to as NaAd is used as additive of wet FGD process. The experimental results show that the wet FGD by using steel work's dust as on absorbent can not only remove SO2 (50 - 70% or so)but also solve the problem of comprehensive utilization of this waste.