关键词: 燃煤电厂, 活性焦, 烟气净化, 脱硫, 脱硝, 脱汞

Abstract: The adaptability of activated coke dry flue gas purification technology applied in large-scale-coal fired power plants are analyzed in combination with the pros and cons of the technology and the present status of flue gas desulphurization in domestic power plants. The key issues need to be solved in the application of the technology are discussed, such as the project costs, the adaptability to high SO2 content, the material supplies, the desulfurization byproduct disposal management and the heat resource for activated coke regeneration. The analysis also indicates that for the high sulfur coal in China, the technology needs to be further developed if applied. In particular, only the technology suitable for wide-range flue gas with independent intellectual rights is developed and the core equipiments, such as the absorber and the regenerator are manufactured domestically, can the project costs be reduced by a big margin so as to make the technology more advantageous in technical and economic performances and be applied broadly.

Key words: coal-fired power generation, activated coke, flue gas purification, desulfurization, denitrification, mercury control