Particulate matter formation characteristics during co-combustion between coal,Refuse-Derived Fuels(RDF)and rice husk
ZHUO Lanting
JIANG Yanchi
WU Xiaojiang
ZHANG Zhongxiao
GUO Xinwei
WANG Wei
FAN Cunjiang
Abstract：In this study,single combustion and co-combustion of Lu'an coal,refuse derived fuel and rice husk were carried out in a laboratory-scaled drop tube furnace,respectively.The effects of different RDF and rice husk addition ratios on the emission of PM1 and PM1-10 were studied.The experimental results indicate that the PM1 emissions were the highest when RDF combusted alone(4.85 mg/g),while the PM10 emissions from the single combustion of husk were the highest(23.37 mg/g).During co-combustion,compared with the theoretical calculation values,the PM1 and PM1-10 emissions both significantly decreased when adding 5%RDF and 7.5%DK,5%RDF and 20%DK.What's more,the latter had the highest reduction degree and the reduction amounts of PM1 and PM1-10 were 62.75%and 66.96%,respectively,indicating the existence of significant interaction between particles during co-combustion,and the intensity of this interaction was related to the blending ratios.Through thermodynamic equilibrium calculations,XRF,XRD and SEM-EDS analysis of fly ash,it can be found that the amount of liquid phase substances generated during co-combustion increased by 5%-47%compared to coal combustion alone,which led to the generation of many viscous particles.The viscous Ca/K-Si-Al had the ability to capture small particles as well as alkali metals and alkali earth metals,which can effectively promote the transformation of fine particles to coarse modes.
Keywords：particulate mattersrefuse derived fuelrice huskco-combustionthermodynamic equilibrium calculation
Publication Date：2025-07-31
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 152-161 )