摘要
以玉米秸秆为原料,以去离子水为介质,研究水相循环对玉米秸秆水热液化成油特性的影响。循环过程中不额外添加去离子水,对循环前后的水相产物、生物原油和固体产物进行对比研究发现,水相循环产生有机酸的富集效应,促进酮酚类的转化,两者共同作用提高生物原油和固体产物的产率和品质。具体表现为:水相循环对水相pH值影响较小(3.62-3.91),但可以使乙酸和丙酸等有机酸不断累积,同时使酮类、酚类化合物含量逐渐减少;水相循环可以使生物原油产率从20.42%逐步提高至24.31%,且可略提升油品质;水相循环可以使固体产物的碳含量由60.94%提升至61.74%。
The corn stalk was used as the raw material and the deionized water was used as the medium to study the effect of aqueous phase recirculation on characteristics of bio-crude oil formation during hydrothermal liquefaction of corn stalk.No additional deionized water was added during the recirculation.The results show that the aqueous phase recirculation can enrich the concentration of organic acids in aqueous phase and promote the conversion of ketophenols,which can improve the yield and quality of bio-crude oil and solid products.Specifically,the aqueous phase recirculation has little effect on the pH value of the aqueous phase(3.62-3.91),but the organic acids such as acetic acid and propionic acid are continuously accumulated and the content of ketones and phenols is gradually reduced.Also,the yield of bio-crude oil is gradually increased from 20.42%to 24.31%,the quality of bio-crude oil is slightly improved,and the carbon content of the solid product is increased from 60.94%to 61.74%.
作者
尹思媛
田纯焱
李艳美
高传瑞
张念泽
丑鹏涛
易维明
李志合
YIN Si-yuan;TIAN Chun-yan;LI Yan-mei;GAO Chuan-rui;ZHANG Nian-ze;CHOU Peng-tao;YI Wei-ming;LI Zhi-he(College of Agricultural Engineering and Food Science,Shandong University of Technology,Zibo 255000,China;Shandong Research Center of Engineering&Technology for Clean Energy,Zibo 255000,China)
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2020年第3期275-285,I0002,共12页
Journal of Fuel Chemistry and Technology
基金
山东省自然科学基金(ZR2017BEE049)
国家自然科学基金(51706126,31872400,51536009)
淄博市校城融合项目(2019ZBXC380)资助。
关键词
水热液化
玉米秸秆
水相循环
成油特性
生物原油
hydrothermal liquefaction
corn stalk
aqueous phase recirculation
characteristics of biocrude formation
bio-crude oil
