海水体系脱钙与烟气固碳脱硫的集成研究进展

首先综述了近年来海水脱钙和烟气固碳脱硫的方法技术，然后引出海水脱钙与烟气固碳脱硫集成技术的研究进展及发展趋势。在单一的反应中共同处理多种污染物，甚至获得可用于多种用途的副产品是治理环境问题有效的方法。因此文中指出海水脱钙固碳脱硫的集成技术不仅可以提高脱硫率，还可以使碳以碳酸钙固体的形式封存，实现了碳硫的选择性分离，还脱除了海水中的钙离子。烟道气中的二氧化碳和二氧化硫均属于酸性气体，而海水呈碱性，且水溶液体系中的矿化反应速率明显高于直接进行气固反应的反应速率，所以文章提出在海水体系中处理烟道气，是一个值得研究的方向。该集成技术可将有害物质资源再利用，获得具有附加值的产品，实现以废治废，对环境友好且成本低。

Research progress on integration of seawater softening and carbon fixation and desulfurization of flue gas

This paper firstly reviews the methods and technologies of seawater desalination, the carbon fixation and desulfurization of flue gas in recent years, and then introduces the research progress and development trend of their integrated technologies. Treating multiple pollutants together in a single reaction and even obtaining by-products that can be used for multiple purposes is an effective approach to environmental problems. The integration technology of seawater decalcification with carbon sequestration and desulfurization of flue gas, not only can increase the rate of desulfurization, but also can fix carbon dioxide in the form of calcium carbonate, realizing the selective separation of carbon and sulfur, meanwhile the calcium ion in seawater is removed. Both carbon dioxide and sulfur dioxide in flue gas belong to acidic gases, while seawater is alkaline, and the mineralization reaction rate in aqueous solution system is significantly higher than that of direct gas-solid reaction. Therefore, treating flue gas in seawater system is a direction worthy of research. The integrated technology can reuse the harmful substances, obtain the products with added value, and realize waste control by waste, which is environmentally friendly and with low cost.