关键词: 低氮燃烧器, 分级燃烧, NOx排放, 热效率

Abstract: According to the Emission Standard of Pollutants for Petroleum Chemistry Industry（ GB31571—2015） in which the special emission limits of NO_x emission in the flue gas discharged from the heater shall be lower than 100 mg/Nm3,the steam superheater is subject to upgrading and revamp to meet the standard. By analyzing the NO_x formation mechanism,comparing different technologies of NO_x control,and considering the economical efficiency and practical conditions, COOL STAR low NO_x burner from Johzink-Hamworthy Company is finally adopted to reduce NO_x concentration. Through revamp of low-NO_x burner and optimization and adjustment of main process parameters of the heater,the emission concentration of NO_x,CO and particles in the flue gas from the heater have met the special emission limits in the GB31571—2015 standard. The temperature distribution of the furnace and top of the superheater is more uniform; the heat efficiency is improved by 0. 6%;320 ~ 480 tons of natural gas consumption is saved per year,which have laid a good basis for the long-term stable operation of the superheater and pollutant discharge under certain standard.

Key words: Home｜Journal Papers｜About CNKI｜User Service｜FAQ｜Contact Us｜中文《Petrochemical Safety and Environmental Protection Technology》 2017-05Add to Favorite Get Latest Update UPGRADING AND REVAMP OF STEAM SUPERHEATER IN STYRENE PLANT FOR MEETING NO_X EMISSION STAND