火电厂烟气湿法脱硫技改工程中关键过渡技术——临时烟囱增设及烟囱烟道入口封堵措施

Key Transition Technique of Renovation Project on Wet Off-gas Desulfurization in Thermal Power Plant——Measure of Temporary Chimney Extension and Chimney Eentrance Seal

取消烟气湿法脱硫工艺技术中的烟气加热装置GGH,能够降低工程成本、缩短脱硫装置建设时间、节省运行费用,同等达到烟气脱硫效果。为解决烟囱和原有烟道防腐施工而影响机组运行这一难题,通过工程实例,阐述临时过渡烟囱的设计安装和烟囱烟道入口封堵技术,对同类工程具有一定的参考价值。

When the off-gas heating unit GGH was cancelled in the wet off-gas desulfurization technique, it can lower the engineering cost, shorten developments time and save the movement expenses. For solving the problem that generation unit operation affectted by the antisepsis execution of chimney and flue, this paper took an example to expatiating the design and installation of temporary transition chimney and seal techniqu. The methods in this paper have reference value to the same kind engineering.