摘要
先以热重分析法研究咖啡渣的低温燃尽条件,后使用"管式电炉+烟气分析仪"研究咖啡渣在燃尽条件下的污染物排放情况。结果表明,咖啡渣在空气气氛中以10℃·min-1的升温速率升至450℃保温40 min或升至500℃保温18 min,达到低温燃尽条件。在低温燃尽条件下,咖啡渣燃烧排放的污染物包括CO、CxHy、SO2和NO2,450℃的瞬时最大排放量分别为854、9、3、2μg·g-1,500℃的瞬时最大排放量分别为1 399、33、8、2μg·g-1。原料的不完全燃烧和管道的有机物残留是加剧污染的两大原因。
First,low temperature burnout condition of coffee industrial residues was researched by thermogravimetric analysis.Then,pollutant emission characteristics of coffee industrial residues were studied by“electric tube furnace+flue gas analyzer”.The results showed that,in order to meet low temperature burnout condition,coffee industrial residues should be heated up to 450°C and kept the temperature for 40 min or 500°C kept the temperature for 18 min with the heating rate of 10°C·min-1 in air atmosphere.Under the low temperature burnout condition,pollutants in coffee industrial residues combustion emission include CO,CxHy,SO2 and NO2.At 450°C,instantaneous maximum discharge amounts of four pollutants were 854,9,3 and 2μg·g-1,respectively.At 500°C,instantaneous maximum discharge amounts of four pollutants were 1399,33,8 and 2μg·g-1,respectively.Incomplete combustion of raw materials and organic residues in pipelines were the two major causes of pollution.
作者
陈楠纬
任杰
孙水裕
杨帆
CHEN Nan-wei;REN Jie;SUN Shui-yu;YAN Fang(Guangdong Polytechnic of Environmental Protection Engineering,Guangdong Engineering and Technology Research Center of Solid Waste Resource Recovery and Heavy Metal Pollution Control,Foshan Engineering and Technology Research Center of Heavy Metal Pollution Prevention and Resources Comprehensive Utilization,Foshan Guangdong 528216,China;School of Environmental Science and Engineering,Guangdong University of Technology,Guangzhou Guangdong 510006,China)
出处
《当代化工》
CAS
2020年第6期1064-1067,1071,共5页
Contemporary Chemical Industry
基金
广东高校省级重点平台和重大科研项目(项目号:2017GkQNCX047,2017GKCXTD004)
关键词
咖啡渣
燃尽条件
排放特征
CO
CxHy
Coffee industrial residues
Burnout condition
Emission characteristics
CO
CxHy
