钼冶炼行业二氧化硫尾气治理与回收利用技术

在分析国内外钼冶炼行业低浓度二氧化硫治理与回收利用技术的基础上,结合我国实际情况,重点介绍了采用多层大孔板洗涤塔洗涤净化焙烧回转窑烟气,回收亚硫酸钠技术。该技术有效地解决了高温、工况不稳定及强腐蚀等条件下含二氧化硫烟气治理难的问题,脱硫效率达到98%以上,实现了达标排放。回收亚硫酸钠和贵重金属钼、铼,具有显著的环境效益、经济效益和社会效益。

This paper primarily introduced the technology of washing and purifying roasting kiln flue gas and recycling sodium sulfite,using the multi-layered big orifice tower scrubber,on the basis of analyzing foreign and domestic technology of managing and recycling low-concentration sulphur dioxide in molybdenum smelting industry and unifying the actual situation of our country.This technology effectively solved the difficulty of governing flue gas containing sulfur dioxide on the condition of high temperature,unstable operation and strong corrosion.The desulphurization efficiency achieves above 98%,which has realized the standard emissions.Recycling sodium sulfite and heavy metal like molybdenum and rhenium has remarkable environmental,economic and social benefits.