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Ðè¼ìË÷µÄÎÄÕ¾ßÌåÄÚÈÝÈçÏ£º ×÷ÕߣºWANG QING, WANG XUDONG, LIU HONGPENG, JIA CHUNXIA ÌâÄ¿£ºSTUDY OF THE COMBUSTION MECHANISM OF OIL SHALE SEMI-COKE WITH RICE STRAW BASED ON GAUSSIAN MULTI-PEAK FITTING AND PEAK-TO-PEAK METHODS ÆÚ¿¯£ºOil Shale 2013, 30(2) pp157-172. |
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Accession number: 20132316394234 Title: Study of the combustion mechanism of oil shale semi-coke with rice straw based on gaussian multi-peak fitting and peak-to-peak methods Authors: Wang, Qing1 ; Wang, Xudong1; Liu, Hongpeng1; Jia, Chunxia1 Author affiliation: 1 Engineering Research Centre of Oil Shale Comprehensive Utilization Ministry of Education, Northeast Dianli University, Jilin 132012, Jilin, China Corresponding author: Wang, Q. (rlx888@126.com) Source title: Oil Shale Abbreviated source title: Oil Shale Volume: 30 Issue: 2 Issue date: 2013 Publication year: 2013 Pages: 157-172 Language: English ISSN: 0208189X E-ISSN: 17367492 Document type: Journal article (JA) Publisher: Estonian Academy Publishers, Kohtu 6, Tallinn, 10130, Estonia Abstract: In this research, a series of experiments on combustion of Huadian oil shale semi-coke and rice straw as well as their mixture were conducted at different heating rates (10, 20, 50 and 80 ¡ãC/min) under atmospheric pressure, using a Perkin Elmer thermogravimetric analyzer. Combustion characteristics were investigated at different proportions of materials (L1, L2, L3, L4 and L5) and at different heating rates. The results revealed that the point of ignition and burnout shifted to lower temperature with increasing rice straw proportion in the mixture. In the combustion process, the interaction between the mixture components mainly occurred in the temperature range of 400 to 600 ¡ãC. It was found that in this stage the reaction of bimodal components of semi-coke and rice straw took place. Besides, using the Gaussian multi-peak fitting method it was established that the derivative mass loss (DTG) curves displayed an overlapping peak, which consisted of three sub-peaks corresponding to the components of the blend. Moreover, based on the three sub-peaks, kinetic parameters and feature values were found employing the peak-to-peak method. The results showed that the reaction order of various sub-peaks for samples L1, L2, L3 and L4 was 1.17 to 2.27. The activation energies of sub-peaks were determined to be 21.89-99.79 KJ/mol throughout the analysis of the combustion mechanism. It was concluded that the model can be applied to determining combustion characteristics. © 2013 Estonian Academy Publishers. Number of references: 33 Main heading: Combustion Controlled terms: Activation energy - Atmospheric pressure - Enzyme kinetics - Gaussian distribution - Heating rate - Mixtures - Oil shale - Oil shale processing Uncontrolled terms: Combustion characteristics - Different proportions - Fitting method - Oil shale semi cokes - Peak-to-peak - Rice straws - Semi-coke - Thermogravimetric analyzers Classification code: 922.1 Probability Theory - 802.3 Chemical Operations - 802.2 Chemical Reactions - 801.4 Physical Chemistry - 641.2 Heat Transfer - 521.1 Fuel Combustion - 513.1 Petroleum Refining, General - 512.1 Petroleum Deposits - 443.1 Atmospheric Properties DOI: 10.3176/oil.2013.2.06 Database: Compendex Compilation and indexing terms, © 2013 Elsevier Inc. |
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