煤质技术2026，Vol.41Issue(1)：60-65,6.DOI:10.3969/j.issn.1007-7677.2026.01.08
气粉双燃料锅炉的燃烧特性和污染物排放研究
Combustion and emission characteristics of gas-coal dual-fuel boilers
摘要
Abstract
This study investigates the combustion characteristics and pollutant emissions of a 70 MW natural gas/pul-verized coal dual-fuel hot water boiler system in Jinan,Shandong.Experimental research was conducted on three fu-els:Shenfu bituminous coal,blue-coke,and natural gas,focusing on flame morphology,furnace temperature dis-tribution,and nitrogen oxide(NOx)emissions under 50-70 MW loads.Results indicate that fuel properties signifi-cantly affect combustion behavior.Blue-coke with low volatile content(8.29%)and high fixed carbon(76.35%)concentrates high-temperature zones in the upper-middle furnace(maximum ΔT=321℃),while Shenfu coal exhib-its uniform temperature distribution(ΔT=70℃)due to its higher volatiles(31.29%).Natural gas combustion forms mid-furnace high-temperature regions.NOx emissions correlate strongly with fuel-bound nitrogen,with raw e-missions of 580 mg/m3(Shenfu coal),325 mg/m3(blue-coke),and 113 mg/m3(natural gas)at reference O2 levels of 9%and 3.5%respectively.Air-staging technology reduced NOx by 40%,31%,and 27%for the three fu-els,while 22%flue gas recirculation further lowered natural gas NOx to 28 mg/m3.This study demonstrates the dual-fuel system's advantages in fuel flexibility and low-emission performance,providing theoretical and technical in-sights for industrial boiler decarbonization.关键词
双燃料锅炉/燃烧特性/氮氧化物排放/空气分级燃烧/烟气再循环Key words
dual-fuel boiler/combustion characteristics/NOx emissions/air-staged combustion/flue gas recircu-lation分类
能源科技引用本文复制引用
王永英..气粉双燃料锅炉的燃烧特性和污染物排放研究[J].煤质技术,2026,41(1):60-65,6.基金项目
国家重点研发计划资助项目(2023YFB4104303) （2023YFB4104303）
北京天地融创科技股份有限公司科技发展基金资助项目(2023RCZD-03) （2023RCZD-03）
