铝用炭素焙烧炉烟气净化系统废水处理研究  

Research on Wastewater Treatment of Flue Gas Purification System for Aluminum Carbon Baking Furnace

作　　者：孔强 姚智博 Kong Qiang;Yao Zhibo(Shaanxi Nonferrous Yulin New Materials Group Co.,Ltd.,Yulin Shaanxi 719000,China)

机构地区：[1]陕西有色榆林新材料集团有限责任公司,陕西榆林719000

出　　处：《山西冶金》2024年第10期197-199,共3页Shanxi Metallurgy

摘　　要：陕西有色榆林新材料集团有限责任公司焙烧炉烟气净化系统废水主要来源于两方面,一是烟气在冷却塔内喷水降温过程中,水未全部蒸发,产生部分回流水;二是电捕焦油器的冲洗水。以往针对这些废水,主要通过加中和药剂调节p H值和自然沉降后再进行循环使用。但废水经多次往复循环使用后,酸性越来越高,中和药剂中和效果不佳,导致现场设备腐蚀问题凸显,且水中杂物愈发增多,频发管道堵塞情况,对净化系统的安全稳定运行造成较大影响。为此,主要通过初级过滤、加药中和、软化水质、沉淀絮凝物等方法,将废水经压滤机过滤后返回蓄水池备用,一套处理完成后可有效实现水质改善,达到工业使用标准,彻底解决了管道和设备腐蚀、堵塞的问题。The wastewater from the flue gas purification system of the roasting furnace mainly comes from two sources.Firstly,during the cooling process of spraying water on the flue gas in the cooling tower,the water is not completely evaporated,resulting in some backflow water.The second is the flushing water for the electric tar catcher.In the past,these wastewater were mainly treated by adding neutralizing agents to adjust the pH value and natural sedimentation before being recycled.However,after multiple cycles of reuse,the acidity of the wastewater increases,and the neutralization effect of the neutralizing agent is poor,leading to prominent equipment corrosion problems on site.In addition,the amount of impurities in the water increases,and pipeline blockages occur frequently,which has a significant impact on the safe and stable operation of the purification system.To this end,the wastewater is mainly treated through primary filtration,chemical neutralization,softening of water quality,and sedimentation of flocculants.After being filtered by a filter press,it is returned to the reservoir for backup.After a set of treatments is completed,the water quality can be effectively improved to meet industrial standards,completely solving the problems of pipeline and equipment corrosion and blockage.

关 键 词：冷却塔降温 电捕冲洗 初级过滤 压滤 

分 类 号：TF806.1[冶金工程—有色金属冶金]