烧结脱硫废水零排放并协同减排SO_(3)技术分析  

Zero Discharge of Desulphurization Wastewater and Collaborative Emission Reduction of SO_(3) Technology

作　　者：张庆 张雅心 贺敏鹏 ZHANG Qing;ZHANG Ya-xin;HE Min-peng

机构地区：[1]西安西矿环保科技有限公司

出　　处：《节能与环保》2021年第9期48-50,共3页

摘　　要：石灰石-石膏湿法脱硫废水含有大量Ca^(2+)、Mg^(2+)、SO_(4)^(2-)、Cl^(-)与重金属等离子。脱硫废水中加入Ca(OH)_(2)干粉制成吸收剂浆液,经雾化器雾化喷射而出的浆液粒径约10~60μm的细雾滴,在雾化干燥吸收塔内与高温烟气充分接触,烟气中的酸性成份(HCl、HF、SO_(2)、SO_(3))被反应吸收,同时反应产物水份被蒸发,水蒸汽进入烟气中,干燥后反应产物部分落入干燥塔底端被收集外排,其余干燥产物随烟气中的飞灰一起被除尘器收集外排,实现脱硫废水零排放和对烟气中酸性气体的协同减排治理目的。WFGD wastewater contains a large amount of Ca^(2+),Mg^(2+),SO_(4)^(2-),Cl^(-)and heavy metal ions.The desulfurization wastewater was added with Ca(OH)2 to make the slurry.The size of the droplet is about 10~60μm from the atomizer,and the droplets fully contact the flue gas in drying tower.In the flue gas the acidic components(HCl,HF,SO_(2),SO_(3))are absorbed by the reaction.The water from the reaction products is evaporated,the steam enters the flue gas,and some of the reaction products fall into the bottom of the drying tower,while the reaction products are collected and discharged.The remaining products are collected and discharged together with the fly ash by the dust collector.The technology can realize the desulphurization wastewater zero discharge and reduction of acid gas in flue gas.

关 键 词：脱硫废水 零排放 SO_(3) 雾化干燥 

分 类 号：X70[环境科学与工程—环境工程]