深入研究稻壳热解：固体、液体和气体产物的特性、氧迁移和能量产率。
In-depth study of rice husk torrefaction: Characterization of solid, liquid and gaseous products, oxygen migration and energy yield.
机构信息
College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
School of Engineering, Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang Agriculture & Forestry University, Lin'an, Zhejiang 311300, China.
出版信息
Bioresour Technol. 2018 Apr;253:148-153. doi: 10.1016/j.biortech.2018.01.009. Epub 2018 Jan 6.
Torrefaction is a promising method for biomass upgrading, and analysis of all products is the essential way to reveal torrefaction mechanism. In this study, torrefaction of rice husk was performed at 210-300 °C. Results showed that the fuel properties of solid products were greatly enhanced upon removal of oxygen. The gaseous products were mainly CO (52.9-73.8 vol%), followed by CO (26.3-39.2 vol%). The liquid product was mainly water and some tar, and the latter contained acids, furans, ketones, aldehydes, and phenols, among which the relative content of acids was the highest. Torrefaction temperature has obvious effects on the oxygen migration. Within the temperature range of 210-300 °C, 9.5-63.2% of oxygen in rice husk was migrated to the gaseous and liquid products. The HO was the major contributor to deoxygenation, followed by CO and CO. Thus, formation of HO, CO, and CO during torrefaction is important as it achieves the purpose of intense deoxygenation.
热解是一种有前途的生物质升级方法，对所有产品进行分析是揭示热解机制的必要途径。本研究在 210-300℃下对稻壳进行了热解。结果表明，固体产物的燃料性能在去除氧后得到了很大的提高。气态产物主要是 CO（52.9-73.8%体积%），其次是 CO（26.3-39.2%体积%）。液体产物主要是水和一些焦油，后者含有酸、呋喃、酮、醛和酚，其中酸的相对含量最高。热解温度对氧的迁移有明显的影响。在 210-300℃的温度范围内，稻壳中的 9.5-63.2%的氧迁移到气态和液态产物中。HO 是脱除氧的主要贡献者，其次是 CO 和 CO。因此，热解过程中 HO、CO 和 CO 的形成对于强烈脱除氧是很重要的。
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