CFB锅炉二次脱硫技术与经济分析

针对辽宁某电厂4台480 t/h超高压煤矸石CFB锅炉二次脱硫方案进行技术经济比较.通过对常规石灰石-石膏湿法烟气脱硫技术和半干法烟气脱硫比较,得出CFB锅炉二次脱硫采用石灰石-石膏湿法烟气脱硫技术运行稳定可靠,而采用半干法烟气脱硫在满足SO2排放的条件下,有避免烟囱腐蚀、节约除尘设备改造投资、节约运行和检修成本等优点,具有良好的技术经济效益.

Economic and Technical Analysis on Secondary Desulfurization of CFB Boilers

In this paper, the economic and technical analysis of the secondary desulfurization scheme is conducted on four 480-t/h super-high pressure CFB boilers firing gangue in a power plant of Liaoning Province. Through the comparison between the conventional wet limestone-gypsum flue gas desulfurization technology and the semi-dry flue gas desulfurization technology, it is concluded that secondary desulfurization of CFB boilers that adopts the wet limestone-gypsum flue gas desulfurization technology operates stably and reliably, while on the premise of meeting the requirement of SO2 discharge, adopting the semi-dry flue gas desulfurization technology has the advantages of avoiding chimney corrosion, saving the upgrading cost of （lust removal equipment and the cost of operation and maintenance, which is beneficial economically and technically.