{"title":"Combustion characteristics and thermokinetics of coconut shell, coal water slurry, and biomass","authors":"Yikun Peng, Xianyou Tang, Zhukai Zeng, Canjun Xu, Wangsong Wu","doi":"10.1007/s11144-024-02633-x","DOIUrl":null,"url":null,"abstract":"<div><p>The combustion characteristics of coconut shell, coal water slurry, and biomass were studied by combustion thermogravimetry at different heating rates. The DTG curves of all samples exhibit three distinct peaks. The comprehensive combustion characteristic index (<i>S</i><sub>N</sub>) of coconut shell and biomass was higher, and the ignition point and burnout temperature were lower. At the same heating rate, the <i>S</i><sub>N</sub> of coal water slurry is the highest, the <i>S</i><sub>N</sub> of coconut shell, coal water slurry and biomass increased by 337%, 259%, and 429%. Based on the distributed Coats–Redfern integral method, the combustion kinetics of the samples was analyzed. The activation energy of low temperature combustion zone is higher than that in high temperature combustion zone. As the heating rate increases, the activation energy of the samples decreases slightly, but the overall trend remains similar. When <i>n</i> = 2, the fitting curve has a good linear relationship, and the correlation coefficient <i>R</i><sup>2</sup> is all above 0.99.</p></div>","PeriodicalId":750,"journal":{"name":"Reaction Kinetics, Mechanisms and Catalysis","volume":"137 4","pages":"2003 - 2017"},"PeriodicalIF":1.7000,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reaction Kinetics, Mechanisms and Catalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11144-024-02633-x","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
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Abstract
The combustion characteristics of coconut shell, coal water slurry, and biomass were studied by combustion thermogravimetry at different heating rates. The DTG curves of all samples exhibit three distinct peaks. The comprehensive combustion characteristic index (SN) of coconut shell and biomass was higher, and the ignition point and burnout temperature were lower. At the same heating rate, the SN of coal water slurry is the highest, the SN of coconut shell, coal water slurry and biomass increased by 337%, 259%, and 429%. Based on the distributed Coats–Redfern integral method, the combustion kinetics of the samples was analyzed. The activation energy of low temperature combustion zone is higher than that in high temperature combustion zone. As the heating rate increases, the activation energy of the samples decreases slightly, but the overall trend remains similar. When n = 2, the fitting curve has a good linear relationship, and the correlation coefficient R2 is all above 0.99.
期刊介绍：
Reaction Kinetics, Mechanisms and Catalysis is a medium for original contributions in the following fields:
-kinetics of homogeneous reactions in gas, liquid and solid phase;
-Homogeneous catalysis;
-Heterogeneous catalysis;
-Adsorption in heterogeneous catalysis;
-Transport processes related to reaction kinetics and catalysis;
-Preparation and study of catalysts;
-Reactors and apparatus.
Reaction Kinetics, Mechanisms and Catalysis was formerly published under the title Reaction Kinetics and Catalysis Letters.
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