Hydrothermal carbonization of rice husk for fuel upgrading

8th TSME-International Conference on Mechanical Engineering

Suteerawattananonda, N.^1 ; Kongkaew, N.^2 ; Patumsawad, S.^1

Department of Mechanical and Aerospace Engineering, King Mongkut's University of Technology North Bangkok, 1518 Pracharat I Rd. Wongsawang Bang-Sue, Bangkok

10800, Thailand^1

Department of Materials Handling and Logistics Engineering, King Mongkut's University of Technology North Bangkok, 1518 Pracharat I Rd. Wongsawang Bang-Sue, Bangkok

10800, Thailand^2

关键词: Erosion problem;    Fixed carbons;    Hydrothermal carbonization;    Pressure ranges;    Proximate analysis;    Renewable energies;    Volatile matters;    X ray fluorescence analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/297/1/012007/pdf
DOI  :  10.1088/1757-899X/297/1/012007

来源: IOP

【 摘 要 】

The biomass is popularly used as renewable energy. In Thailand rice is the most consume agricultural products. Agricultural residues from rice husk can be an energy resource. However, alkali and alkali earth materials (AAEMs) in biomass ash are the causes of corrosion and erosion problem in the heat exchanger equipment, while the acidity of ash affects the slagging agglomeration problem. Reduction of alkali and alkali earth materials can minimize the problem. In order to challenge the reduction of alkali and alkali earth materials in biomass ash, hydrothermal carbonization process was selected. Thai rice husk was used as sample to compare the result of treatment. The rice husk was heated under the condition of different temperature ranged from 180°C to 250°C, at operate pressure ranges from 12 bar to 42 bar with residence holding reaction time 1 hour. The results of proximate analysis show that the percentage by mass of fixed carbon are increased 2 times, but volatile matter is decreased by 40% and ash content is decreased by 11% due to the increment of temperature. Meanwhile, the X-Ray fluorescence (XRF) analysis results show the decreasing of alkali and alkali earth materials are reduced.