Effects of Temperature and Heating Rate on the Characteristics of Molded Bio-char
| Autor: | Ji-Lei Liu, Huili Liu, Huan-Bin Xu, Hua Wang, Ang Li, Li-Fu Jin, Jianhang Hu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Briquette
Environmental Engineering Yield (engineering) Materials science lcsh:Biotechnology 020209 energy Morphological chemistry.chemical_element Bioengineering 02 engineering and technology Degree (temperature) Physicochemical lcsh:TP248.13-248.65 0202 electrical engineering electronic engineering information engineering Biomass Char Bio-char Composite material Waste Management and Disposal chemistry visual_art visual_art.visual_art_medium Heat of combustion Sawdust Carbon Pyrolysis |
| Zdroj: | BioResources, Vol 11, Iss 2, Pp 3259-3274 (2016) |
| ISSN: | 1930-2126 |
| DOI: | 10.15376/biores.11.2.3259-3274 |
| Popis: | A slow pyrolysis of pinewood was investigated in this paper. Through the briquette process, the pinewood sawdust becomes molded biomass. The molded bio-char was produced from molded biomass with different pyrolysis factors, and the bio-char’s heating value, char yield rates, and physicochemical and morphological properties were investigated. Molded bio-char’s characteristics depended principally on pyrolysis factors. At low temperature (400 °C), the char yield rate was positively correlated to the heating rate. But at higher temperatures (500 to 700 °C), the char yield rates decreased as heating rates increased. As pyrolysis temperature increased from 400 to 700 °C, the following increased in molded bio-char: fixed-carbon content, percentage carbon, heating value, ash content, as well as surface areas. And its pore structure, graphite degree, and polymerization degree achieved a higher level. Compared with pulverized bio-char, the molded bio-char had a higher char yield rate, ash content, graphite degree, and structure ordering. The molded bio-char obtained from a low temperature (400 °C) and high heating rate (15 °C/min) can be used as a reducing agent, the molded bio-char from 600 °C is recommend as an activated carbon precursor, and the molded bio-chars from low temperature (400 °C) have a higher efficiency as fuel. |
| Databáze: | OpenAIRE |
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