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Development of Innovation DME Process from Natural Gas and Biomass in KOREA
조원준(Cho, Wonjun),송택용(Song, Taekyong),백영순(Baek, Youngsoon),김승수(Kim, Seung-Soo) 한국신재생에너지학회 2010 한국신재생에너지학회 학술대회논문집 Vol.2010 No.11
Hydrogen is an alternative fuel for the future energy which can reduce pollutants and greenhouse gases. Synthesis gas have played an important role of synthesizing the valuable chemical compound, for example methanol, DME and GTL chemicals. Renewable biomass feedstocks can be potentially used for fuels and chemical production. Current thermal processing techniques such as fast pyrolysis, slow pyrolysis, and gasification tend to generate products with a large slate of compounds. Lignocellulose feedstocks such as forest residues are promising for the production of bio-oil and synthesis gas. Pyrolysis and gasification was investigated using thermogravimetric analyzer (TGA) and bubbling fluidized bed gasification reactor to utilize forest woody biomass. Most of the materials decomposed between 320?C and 380?C at heating rates of 5{sim}20?C/min in thermogravimetric analysis. Bubbling fluidized bed reactor were use to study gasification characteristics, and the effects of reaction temperature, residence time and feedstocks on gas yields and selectivities were investigated. With increasing temperature from 750?C to 850?C, the yield of char decreased, whereas the yield of gas increased. The gaseous products consisted of mostly CO, co₂, H2 and a small fraction of C1-C4 hydrocarbons.