China's largest magnesium oxide desulfurization system successfully put into operation at Huaneng
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The desulfurization system adopts a wet magnesium oxide desulfurization method and is currently the largest magnesium oxide desulfurizer in China. The desulfurization by-product magnesium sulfate can be further calcined to produce sulfur dioxide and magnesium oxide. Among them, sulfur dioxide can be made into an important industrial raw material, sulfuric acid, and magnesium oxide. Reuse as a desulfurizer. In addition, due to the high activity of magnesium oxide absorbent, which can effectively reduce the initial investment and operating costs of the system, this project can effectively overcome the commonly used "limestone-gypsum wet" desulfurization technology, which is likely to cause secondary pollution and operation. The higher costs and other issues will surely promote the implementation of large-scale coal-fired unit flue gas desulphurization technology to a new level.
The distribution of magnesium oxide in the world is very uneven, mainly distributed in China's Shandong Laizhou and Liaoning. Huaneng Xin Power Plant is located in Zibo, which is close to the magnesium mine in Laizhou. The use of magnesium oxide desulfurization method can not only greatly reduce the desulfurization cost, but also avoid the environmental pollution caused by the discard of by-products. At the same time, for chemical companies, the use of sulfur dioxide from the calcination of magnesium sulphite to produce sulphuric acid also saves a lot of sulphur raw material imports and reduces production costs compared to traditional sulphuric sulphuric acid production methods, forming an industrial economic chain.