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organization for economic cooperation and development

机译:经济合作与发展组织

摘要

The sepn. of SO2 from waste gas comprises scrubbing with sea water in an absorption tower. The liquid sump in the tower is aerated to convert bisulphite to bisulphate and the liquid is discharged into a sec. reaction tank, where it is mixed with fresh sea water for sulphate formation and neutralisation. The pH of the liquid discharged from the tower is monitored and deviations from a theoretical value in the pH 4.0-5 range are determined and used to control addn. of sea water directly to the sump or a liquid stream recycled from the sump into the absorption zone of the tower.
机译:Sepn。废气中的SO2包括在吸收塔中用海水洗涤。塔中的液体贮槽被充气,以将亚硫酸氢盐转化为亚硫酸氢盐,并将液体排出几秒钟。反应池中,将其与新鲜海水混合以形成硫酸盐并中和。监测从塔中排出的液体的pH值,确定与pH 4.0-5范围内的理论值之间的偏差,并将其用于控制​​添加剂。海水直接流入集水槽,或从集水槽回收的液体流进入塔的吸收区。

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