主催: 日本エネルギー学会, 石炭科学部会, コークス工学研究部会, 重質油部会
共催: 石炭・炭素資源有効利用研究会
会議名: 第58回石炭科学会議
開催地: オンライン開催
開催日: 2021/10/26 - 2021/10/27
p. 64-65
Chromated copper arsenate–treated wood produced by injecting a solution containing sub–percent of chromium, copper, and arsenic (hereinafter referred to as CCA–treated wood) is one of the construction wastes. As fundamental research on the development of clean gasification process for biomass, pyrolysis (400–800°C) which is the initial stage of gasification and CO2 gasification (1000°C, 0–60min) characteristics of CCA–treated wood were investigated. The release behavior of high volatile arsenic during pyrolysis and gasification of CCA–treated wood was followed. When the CCA–treated wood was pyrolyzed, the release of arsenic proceeded with increasing temperature and the release extent was 41% at 800°C. In the case of gasification, the release extent of arsenic increased with gasification time and 90% of the arsenic was released into gas phase within 60min. Furthermore, it was possible to suppress the release of arsenic by 800°C during pyrolysis by mixing organic sludge rich in iron and calcium with CCA–treated wood.