| 玉米秸秆的渗滤式稀酸预处理 |
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| 引用本文： | 张素平,李琰,许庆利,任铮伟,颜涌捷.玉米秸秆的渗滤式稀酸预处理[J].太阳能学报,2011,32(2):276-280. |
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| 作者姓名： | 张素平 李琰 许庆利 任铮伟 颜涌捷 |
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| 作者单位： | 华东理工大学生物质能源研究中心,上海,200237 |
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| 基金项目： | 国家高技术研究发展(863)计划，中国科学院可再生能源与天然气水合物重点实验室 |
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| 摘 要： | 对玉米秸秆的渗滤式稀酸预处理进行了考察,通过对温度、酸浓度、渗滤速度、液固比等影响因素的实验分析,得到了优化的工艺条件:反应温度170℃,硫酸浓度0.25%,液固比为10:1,渗滤速度150mL/min,70%水解液排出后,渗滤速度降为100mL/min。水解液中木糖浓度达到22g/L,糖得率达到约80%。经过稀酸预处理后的玉米秸秆进行酶水解,纤维素转化率达到80%。
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| 关 键 词： | 玉米秸秆 稀酸预处理 渗滤式 |
RESEARCH ON DILUTE ACID PRETREATMENT OF CORN STALKS IN PERCOLATION REACTOR |
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| Zhang Suping,Li Yan,Xu Qingli,Ren Zhengwei,Yan Yongjie.RESEARCH ON DILUTE ACID PRETREATMENT OF CORN STALKS IN PERCOLATION REACTOR[J].Acta Energiae Solaris Sinica,2011,32(2):276-280. |
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| Authors: | Zhang Suping Li Yan Xu Qingli Ren Zhengwei Yan Yongjie |
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| Affiliation: | Zhang Suping,Li Yan,Xu Qingli,Ren Zhengwei,Yan Yongjie (Department of Chemical Engineering for Energy Resources,East China University of Science and Technology,Shanghai 200237,China) |
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| Abstract: | The dilute acid pretreatment of corn stalks in percolation reactor was studied.The optimal pretreatment conditions were obtained through the experiment analysis for the main factors,such as temperature of 170℃,the sulfuric acid concentration of 0.25%,the ratio of 10:1 between liquid and solid mass,the percolating velocity varys form 150mL/min etc.,percolating velocity was reduced to 100mL/min when 70%hydrolyzate was discharged.The concentration of xylose reaches 22g/L and the yield was about 80%.The yield of enzymatic hydrolysis reached 80%with the pretreatment. |
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| Keywords: | corn stalk dilute acid pretreatment percolation |
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