Upgrading of bio-oil via solar pyrolysis of the biomass pretreated with aqueous phase bio-oil washing, solar drying, and solar torrefaction
Upgrading of bio-oil via solar pyrolysis of the biomass pretreated with aqueous phase bio-oil washing, solar drying, and solar torrefaction
复制标题
通过对经过水相生物油洗涤、太阳能干燥和太阳能烘焙预处理的生物质进行太阳能热解来升级生物油
DOI：
10.1016/j.biortech.2020.123130
复制
发表时间：
2020
影响因子：
11.4
通讯作者：
Zhou Jianbin
中科院分区：
文献类型：
--
作者：
Chen Dengyu;Cen Kehui;Cao Xiaobing;Zhang Jie;Chen Fan;Zhou Jianbin
在本研究中，首先用水相生物油代替传统的酸洗对三种生物质进行了预处理。然后，用抛物线槽式太阳能接收器系统对洗涤后的样品进行干燥(100h℃，30min)和烘干(250h℃，30min)的预处理。随后的热解在550C℃下使用抛物面-碟形太阳能接收器系统进行10分钟。结果表明，太阳能可以有效地保证生物质干燥、烘干和热解所需的温度，具有取代传统电加热或化石燃料加热的潜力。这种策略结合了独立前处理的优点，即浸出金属物种和降低氧含量。因此，生物油的高热值显著提高，酸的生成受到强烈的抑制，而酚类和脱水糖的生成却得到了促进。因此，本文提出的方法对生物质和生物油的提质具有很好的应用前景。
In this study, three types of biomass were first pretreated with an aqueous phase bio-oil instead of traditional acid washing. Then, the washed samples were pretreated with drying (100 ℃, 30 min) and torrefaction (250 ℃, 30 min) using a parabolic-trough solar receiver system. The subsequent pyrolysis was performed at 550 ℃ for 10 min using a parabolic-dish solar receiver system. Results showed that the solar energy can effectively ensure the temperature required for biomass drying, torrefaction, and pyrolysis, having thus a potential to replace the conventional electric heating or fossil fuel heating. Such a strategy combines the advantages of the independent pretreatments, i.e., leaching out of metallic species and reduction of oxygen content. Consequently, the high heating value of bio-oil increased remarkably, the generation of acids was strongly inhibited, whereas the formation of phenols and anhydrosugars was promoted. Therefore, the method proposed herein is promising for upgrading of biomass and bio-oil.