内蒙古主要农作物秸秆燃烧释放烟气污染物研究  

Study on flue gas pollutants from burning of main crop straws in Inner Mongolia

作　　者：张恒[1] 王柏杰 王飞[1] ZHANG Heng;WANG Baijie;WANG Fei(College of Forestry,Inner Mongolia Agricultural University)

机构地区：[1]内蒙古农业大学林学院

出　　处：《环境工程技术学报》2022年第4期1015-1021,共7页Journal of Environmental Engineering Technology

基　　金：中国博士后科学基金面上项目(2019M653807XB)。

摘　　要：为了解内蒙古自治区农作物秸秆露天焚烧烟气污染物排放情况,运用自主设计的生物质燃烧系统,以内蒙古地区典型农作物(葵花和玉米)秸秆作为研究对象进行室内模拟燃烧试验,通过比较不同地区秸秆燃烧释放CO、CO_(2)、NO_(x)、C_(x)H_(y)和PM_(2.5)之间的差异,进行排放特性研究。结果表明:葵花秸秆CO、CO_(2)、NO_(x)、C_(x)H_(y)和PM_(2.5)的排放因子分别为(344.71±66.36)、(1 147.73±229.01)、(3.20±0.62)、(138.48±28.22)和(0.97±0.20)g/kg,玉米秸秆的排放因子分别为(319.69±52.27)、(1 178.75±149.00)、(1.29±0.04)、(57.83±9.45)和(1.44±0.17)g/kg;不同地区农作物秸秆在明燃和阴燃条件下PM_(2.5)排放因子分别为(0.23±0.11)~(3.26±0.16)和(0.53±0.35)~(2.91±1.69)g/kg, CO排放因子分别为(162.66±15.94)~(381.65±81.74)和(235.29±34.43)~(569.80±165.72)g/kg,CO_(2)排放因子分别为(1 094.96±182.04)~(1 866.22±377.83)和(725.10±107.71)~(1 409.43±82.32) g/kg,除CO_(2)排放因子表现为明燃大于阴燃外,其他污染物排放因子均表现为阴燃大于明燃。In order to understand the emission of flue gas pollutants from open burning of crop straws in Inner Mongolia Autonomous Region,a self-designed biomass combustion system was used and typical crop(sunflower and corn)straws in Inner Mongolia were taken as the research objects to conduct indoor simulated combustion experiment.The emission characteristics of straw burning were studied by comparing the differences of emission factors of CO,CO_(2),NO_(x),C_(x)H_(y) and PM_(2.5) in different areas.The results showed that the emission factors of CO,CO_(2),NO_(x),C_(x)H_(y) and PM_(2.5) of sunflower straw were(344.71±66.36),(1147.73±229.01),(3.20±0.62),(138.48±28.22)and(0.97±0.20)g/kg,respectively,and the emission factors of CO,CO_(2),NO_(x),C_(x)H_(y) and PM_(2.5) of corn straw were(319.69±52.27),(1178.75±149.00),(1.29±0.04),(57.83±9.45)and(1.44±0.17)g/kg,respectively.The emission factors of PM_(2.5) of crop straws in different areas were(0.23±0.11)-(3.26±0.16)and(0.53±0.35)-(2.91±1.69)g/kg in flaming and smoldering,respectively;the emission factors of CO were(162.66±15.94)-(381.65±81.74)and(235.29±34.43)-(569.80±165.72)g/kg in flaming and smoldering,respectively;the emission factors of CO_(2) were(1094.96±182.04)-(1866.22±377.83)and(725.10±107.71)-(1409.43±82.32)g/kg in flaming and smoldering,respectively.The emission factor of CO_(2) was higher in flaming than that of smoldering,and the emission factors of CO,NO_(x),C_(x)H_(y) and PM_(2.5) were higher in smoldering than those in flaming.

关 键 词：秸秆燃烧 烟气污染物 PM_(2.5) 排放因子 排放特性 

分 类 号：X513[环境科学与工程—环境工程]