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Selecting additives for optimum combustion performance of a new-type Jerusalem artichoke-bituminous coal solid biofuel pellets
Received:April 07, 2015  
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KeyWord:Jerusalem artichoke;bituminous coal;solid biofuel pellet;additive;combustion characteristics
Author NameAffiliationE-mail
CHANG Zi-pan College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China  
GUO Jia-xun College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China  
ZHAO Geng-mao College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China seawater@njau.edu.cn 
WANG Chang-hai College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China  
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Abstract:
      Jerusalem artichoke biomass has been used to produce biofuel and can also improve the combustion performance of bituminous coal after adding to the coal. However, Jerusalem artichoke-bituminous coal solid biofuel pellets(JAC pellets) still produce large amount of slag during combustion. Here we examined the combustion characteristics of JAC pellets after mixing with MgCO3, CaCO3, Al2O3 and Al2Si2O5(OH)5 at 3%(m:m) to select additives for optimum combustion performance of JAC pellets. Results showed that adding additives decreased slagging rates to a great extent, while absorbed acid gases effectively. Addition of CaCO3 resulted in a significant reduction in ash content and Ringelman emittance. In summary, CaCO3 improved the combustion performance of the JAC pellets and could be a promising additive for JAC pellets.