Title:
Improving Thermal Performance of Rice Husk through Blends with Rice Straw: Physical-chemical Characterization and Reaction Kinetics in Inert and Oxidative Atmospheres
Author(s):
Serrano-Bayona, R.A., Maradei-García, M.P., Rueda-Ordóñez, Y.J.
Document(s):
Paper
Poster
Abstract:
Currently, in developing countries, rice husk is burned in furnaces to obtain heat for air-drying stage in rice milling or for obtaining heat in boilers to get steam for the process, and the rice straw is left in the field as a complementary fertilizer. Therefore, since there is a lack of use of this material for energy or fuel production purposes, the aim of this work was to study the improvement of the thermal characteristics of the rice husk through blending with rice straw for use in thermal decomposition processes, such as pyrolysis, combustion, or even gasification. Thus, this work compares the thermal behavior of two biomass materials obtained from rice processing and harvesting, in inert and oxidative atmospheres for combustion and pyrolysis reactions, respectively. Proximate and ultimate analysis tests under ASTM standards for biomass and Wood particulate fuels, heating value tests on wet basis using Parr 6200 calorimeter, and TGA tests in inert and oxidative environments at different heating rates in nitrogen and synthetic air atmospheres were performed. For the kinetic analysis, three reaction mechanisms were evaluated for both atmospheres, single-step global reaction, independent parallel reactions, and consecutive reactions. In order to assess their accuracy with experimental values, average deviation percentage (AD) lower than 5% was used as a statistical criterion. Results obtained from this work presented that rice straw has a higher heating value than rice husk, being more profitable for combustion processes. Also, the blend with rice husk presented a higher heating value and lower ash content than only rice husk, improving the thermal characteristics of this residue.
Keywords:
assessment, combustion, pyrolysis, rice husks, rice straw
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Production and supply of solid fuels and intermediates
Event:
27th European Biomass Conference and Exhibition
Session:
2DV.2.10
Pages:
1009 - 1015
ISBN:
978-88-89407-19-6
Paper DOI:
10.5071/27thEUBCE2019-2DV.2.10
Price:
FREE
