不同苛刻条件下生物质热解多联产与洗涤预处理相关性的研究：水、稀酸溶液和水相生物油。
Investigation of the relevance between biomass pyrolysis polygeneration and washing pretreatment under different severities: Water, dilute acid solution and aqueous phase bio-oil.
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 A & F University, Hangzhou, Lin'an, Zhejiang 311300, China.
出版信息
Bioresour Technol. 2019 Apr;278:26-33. doi: 10.1016/j.biortech.2019.01.048. Epub 2019 Jan 14.
Washing pretreatments of rice straw were performed using three different solutions, namely water, dilute hydrochloric acid solution (HCl solution, pH = 2.9), and aqueous phase bio-oil (APBO, pH = 2.9). The raw and pretreated samples were pyrolyzed at 550 °C in a fixed bed reactor. Results showed that among the three pretreatments, washing with APBO had the highest removal efficiency of alkali metal and alkaline earth metals (AAEMs). Among the pyrolysis products, bio-oil from APBO washed sample had the highest mass, energy, and carbon yields, lowest water content of 36.9%, highest HHV of 17.2 MJ/kg, and highest relative content of anhydrosugars of 31.2%. Its biochar had the lowest ash content of 27.3% and highest specific surface area of 98.6 m/g, and its non-condensable gases had the highest HHV of 11.9 MJ/m. Therefore, APBO washing was effective in improving the quality of biomass and its subsequent pyrolysis products.
稻草采用水、稀盐酸溶液（HCl 溶液，pH=2.9）和水相生物油（APBO，pH=2.9）三种不同溶液进行预处理，在固定床反应器中于 550°C 下对原样品和预处理样品进行热解。结果表明，在三种预处理方法中，用 APBO 洗涤具有最高的碱金属和碱土金属（AAEMs）去除效率。在热解产物中，APBO 洗涤样品的生物油质量、能量和碳产率最高，水分含量最低（36.9%），HHV 最高（17.2 MJ/kg），无水糖的相对含量最高（31.2%）。其生物炭的灰分含量最低（27.3%），比表面积最高（98.6 m/g），不可冷凝气体的 HHV 最高（11.9 MJ/m）。因此，APBO 洗涤在提高生物质及其后续热解产物的质量方面是有效的。
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