CHARCOAL FROM BIOMASS – A SUSTAINABLE REDUCTANT
Most metallurgical processes are typically energy and reducing agent extensive procedures, which generate high amounts of CO2-emissions because of the usually used fossil fuels and reductants. In the majority of cases it is not or only slightly possible to reduce the input of fossil coals or coke because of operational requirements and settings. So the only way to minimize climate changing emissions of CO2 in this industrial sector is to find CO2-neutral alternatives to the typically used fossil fuels and reductants. One option therefore is the production of high quality charcoals that meet the requirements of metallurgical processes, which could then substitute the fossils in these processes. This completely new point of view demonstrates the option of environmental protection in a typically “dirty industrial sector in big scale. But for such an application these charcoals have to meet some special quality criterions like high Cfix-contents and the correct reactivity. In this paper influencing factors on the carbonization concerning charcoal quality are illustrated. Therefore some different biomasses, especially residues from forestry and agriculture, were investigated and carbonized in an in-house developed carbonization reactor at different conditions with additional gas measurement. The main focus was the examination of the influence of the carbonization temperature on the charcoal yield and quality, which was determined by chemical analysis and reactivity measurement. The results of these first investigations showed that the production of high quality charcoals with best parameter settings is possible. These charcoals have similar properties to fossil coke grades and could therefore substitute them in metallurgical processes.
charcoal carbonization metallurgy reducing agent
T. GRIESSACHER J. ANTREKOWITSCH
Department of Nonferrous Metallurgy, University of Leoben, Austria
国际会议
北京
英文
28-34
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）