氧化镁湿法脱硫在硫化碱行业的应用探讨

二氧化硫是工业硫化碱窑炉尾气的主要污染物之一，从理论上分析了尾气中二氧化硫的产生过程，简要介绍了氧化镁湿法脱硫技术的基本原理，详细讨论了浆液制备、吸收、氧化、结晶、干燥等过程工艺参数的控制，指出用这种方法生产七水硫酸镁可以避免吸收塔堵塞、结垢等问题，具有投资少、塔体结构简单等特点，并且从原料供应、运行费用等经济角度讨论其可行性，这样可以降低烟气脱硫成本，提高副产物硫酸镁的利润空间。该工艺不仅可以保护环境，而且为企业创造了良好的经济效益。只有通过这种方式，企业才能持续健康发展，从而增强企业的竞争力。

Study on application of magnesium oxide in flue gas desulphurization in alkali sulfide industry

Sulfur dioxide is one of the main pollutants that come from the tail gas of industrial furnace in alkali sulfide industry. The production process of sulfur dioxide was analyzed theoretically，and the basic principle of wet magnesia flue gas desulphurization（FGD） was introduced briefly.The relationships between desulfurization efficiency and several factors were studied，including the slurry preparation，absorption，oxidation，crystallization，and drying etc..It pointed out that this method can avoid the problems，such as absorption tower block and scaling.It had many characteristics，such as less investment and simple tower structure.The feasibility was also discussed from the economic angles，such as raw material supply and operation cost.Thus the flue gas desulphurization cost can be reduced and the profit space of by-product magnesium sulfate can be increased.The process can not only protect the environment，but also create a good economic benefit for the enterprise.Only in this way，the enterprises can realize sustained and healthy development and enhance the competitiveness.