In this paper,the combined process of low-nitrogen combustion+calcium-based desulfuration with fixed bed is proposed for flue gas treatment of heating furnace thorough comparing current common desulfurization technology with active carbon,SDS sodium-based desulfurization technology,calcium-based desulfurization technology with fixed bed and dry desulfurization technology with highly active calcium powder in metallurgical industry as well as selecting the desul-furization and denitrification technologies suitable for conventional walking beam reheating furnace of steel rolling mill by taking the ultra-low emission transformation for conventional walking beam reheating furnace of steel rolling mill as an ex-ample. After on-site implementation,the nitrogen oxides,sulfur dioxide and particulate matter in flue gas could all meet the ultra-low emission requirements so that the combined process could provide reference for enterprises in the same indus-try.
关键词
加热炉/超低排放/低氮燃烧/固定床脱硫
Key words
heating furnace/ultra-low emission/low-nitrogen combustion/desulfuration with fixed bed