Pyrolysis and simulation of typical components in wastes with macro-TGA. (1st October 2015)

• Record Type: Journal Article
• Authors: Meng, Aihong; Chen, Shen; Zhou, Hui; Long, Yanqiu; Zhang, Yanguo; Li, Qinghai
• Is Part Of: Fuel. Volume 157(2015)
• Page Start: 1
• Page End: 8
• Publication Date: 2015-10-01
• Subjects: Biomass pyrolysis -- Macro-TGA -- Pseudo-components model -- Simulation -- Overlap ratio; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2015.04.056
• Languages: English
• ISSNs: 0016-2361

Abstract

Highlights: A macro-TGA was designed and verified to get real-time mass as TGA. Compared to DTG curves, all main peaks temperature of macro-DTG delayed 30–60 °C. The main peaks temperature between TGA and macro-TGA showed good linear relationship. The pseudo-components simulation model was verified. The biomass could be well simulated by main components based on macro-TG curves. Abstract: The pyrolysis of typical components of biomass waste, cellulose, hemicellulose, lignin, pectin and starch was performed and compared in a continuous-weighting fixed bed reactor acting as a macro thermogravimetric analyzer (TGA), namely macro-TGA. The mass loss and mass loss rate with time derived from macro-TGA looks similar to TG curve and differential thermogravimetric (DTG) curve from TGA. Compared to those from TGA, the DTG peak of every sample pyrolysis on macro-TGA delayed, and only one main peak appeared on hemicellulose with macro-TGA. The residue of different samples was in decreasing sequence as lignin > pectin > hemicellulose > starch > cellulose. Furthermore, the pseudo-components model based on the TG/macro-TG curves simulation was analyzed and compared. The overlap ratios between raw TG/macro-TG curves and simulation curves through different methods were all higher than 0.977 at the heating rate of 10 °C/min to suggest that biomass waste pyrolysis characteristics could be well simulated by its components.