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- W2348416971 abstract "An in-situ pyrolysis technique by integrated drying and pyrolysis in one reactor for lignite with high moisture content was proposed. The in-situ steam evaporated from the lignite was utilized as a gasification agent to improve the conversion efficiency. In-situ pyrolysis characteristic of Hailer lignite was investigated by a thermogravimetric analyzer. The feasibility of in-situ pyrolysis,the effects of moisture content and heating rate were discussed,and quantitative analysis was carried out according to kinetics parameters. Results demonstrated that there were 4 sections in the direct pyrolysis,called the initial drying,drying-pyrolysis( activation energy 5 kJ / mol),main pyrolysis( activation energy between 10-24 kJ / mol),and polycondensation stage( activation energy between 65-85 kJ / mol). The fast-heating condition postponed the desorption of water,which favored the copyrolysis among the in-situ moisture, volatiles and char. The fixed carbon yield reduced from 23. 34% to 19. 66%. The increase of moisture content reduced the activation energy,while interaction between the water and the solid was strengthened. The yield of solid( on a dry basis) decreased from 61. 62% to 59. 23%,thus it proved that the moisture in the lignite promoted the pyrolysis reaction." @default.
- W2348416971 created "2016-06-24" @default.
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- W2348416971 date "2014-01-01" @default.
- W2348416971 modified "2023-09-26" @default.
- W2348416971 title "Thermal analysis on in-situ pyrolysis and kinetics characteristics of lignite" @default.
- W2348416971 hasPublicationYear "2014" @default.
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