Yeseul Park, Minsung Choi, Xin Zhuo Li, Chanho Jeong, Ji Hoon Lee, G. Choi
{"title":"Effects of Biomass Particle Size on Flame Structure and Combustion Characteristics using Blended Coal/Biomass Fuel in a Pulverized Coal Swirl Burner","authors":"Yeseul Park, Minsung Choi, Xin Zhuo Li, Chanho Jeong, Ji Hoon Lee, G. Choi","doi":"10.15231/JKSC.2020.25.4.026","DOIUrl":null,"url":null,"abstract":"The flame structure and combustion characteristics of co-firing coal and LPG with different sizes of biomass were investigated in a dual swirl pulverized coal burner by using a high-speed camera with bandpass filter and PIV system. Three sizes of spent mushroom compost (<45, 45~90, 90~150 μm) were cofired with pulverized coal (45~90 μm) at a blending ratio of 20%. When the biomass of the same size with coal was used, the turbulence intensity had the highest uniformity while other cases exhibited locally strong turbulent intensity. The combustion using <45 μm biomass was terminated early compared to other conditions, whereas the reaction region was the widest for 45~90 μm biomass. The flame had uniform turbulent intensity with wide and strong reaction when the biomass size was equal to that of coal. When using 45~90 μm of biomass, high velocity was maintained in the overall region and CH * radical was observed in a wide region with the highest radical intensity.","PeriodicalId":42247,"journal":{"name":"Journal of the Korean Society of Combustion","volume":" ","pages":""},"PeriodicalIF":0.7000,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Korean Society of Combustion","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.15231/JKSC.2020.25.4.026","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The flame structure and combustion characteristics of co-firing coal and LPG with different sizes of biomass were investigated in a dual swirl pulverized coal burner by using a high-speed camera with bandpass filter and PIV system. Three sizes of spent mushroom compost (<45, 45~90, 90~150 μm) were cofired with pulverized coal (45~90 μm) at a blending ratio of 20%. When the biomass of the same size with coal was used, the turbulence intensity had the highest uniformity while other cases exhibited locally strong turbulent intensity. The combustion using <45 μm biomass was terminated early compared to other conditions, whereas the reaction region was the widest for 45~90 μm biomass. The flame had uniform turbulent intensity with wide and strong reaction when the biomass size was equal to that of coal. When using 45~90 μm of biomass, high velocity was maintained in the overall region and CH * radical was observed in a wide region with the highest radical intensity.