作　　者： (秦茜）; (吕瑞宏）; (魏占鸿）; (邵志超）; (向淨羞）;

机构地区： 金川集团股份有限公司化工厂,甘肃金昌737100

出　　处： 《硫酸工业》 2017年第8期44-45,49,共3页

摘　　要： 介绍了湿式氧化镁法烟气脱硫废液提浓回收七水硫酸镁的工艺流程及工艺特点。脱硫废液通过除杂过滤、蒸发提浓、冷却结晶等单元操作回收七水硫酸镁。其关键工艺指标有脱硫废液pH值、蒸发提浓温度、冷却结晶温度、干燥温度等。该工艺技术通过实际生产验证了其可行性。 Process and technical characteristics of flue gas desulphurization waste liquid concentration recycle MgS04 ？ 7H20 by wet magnesium oxide method are described. Desulphurization waste liquid recycled MgS04 ？ 7H20 through operation of impurity filtra-tion, evaporation enrichment and cooling crystallization. The key process indicators were pH value in desulphurization waste liquid, e-vaporation enrichment temperature, cooling crystallization temperature, and drying temperature, etc. The process technology validate feasibility through actual production.

关 键 词： 硫酸生产 脱硫 废液 蒸发提浓 回收 七水硫酸镁