| 螺带桨搅拌在木质纤维素酸预处理反应器中的应用简 |
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| 引用本文： | 何燕青,张龙平,张建,鲍杰.螺带桨搅拌在木质纤维素酸预处理反应器中的应用简[J].生物加工过程,2014(1):8-12. |
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| 作者姓名： | 何燕青 张龙平 张建 鲍杰 |
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| 作者单位： | 华东理工大学 生物工程学院 生物反应器工程国家重点实验室,上海200237 |
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| 基金项目： | 国家重点基础研究计划（973计划）（2011CB707406）;国家高技术研究发展计划（863计划）（2012AA022301） |
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| 摘 要： | 在干式稀酸预处理的反应器中采用螺带桨搅拌器，对秸秆预处理体系进行混合。在带有螺带式搅拌的预处理过程中，在质量分数2.0％和2.5％的H2 SO4用量条件下，预处理后72 h秸秆的酶解糖化得率分别为77.55％和87.11％，比静态预处理得到的得率分别增长了7.6％和2.4％，抑制物的生成显著降低。通过计算流体力学方法验证，螺带桨搅拌器可以有效地改善玉米秸秆在稀酸预处理过程中的蒸汽和秸秆两相的混合情况。
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| 关 键 词： | 螺带桨 木质纤维素 稀酸 预处理 计算流体力学 |
Application of helical ribbon stirrer in the reactor for dilute acid pretreatment of lignocellulose |
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| HE Yanqing,ZHANG Longping,ZHANG Jian,BAO Jie.Application of helical ribbon stirrer in the reactor for dilute acid pretreatment of lignocellulose[J].Chinese Journal of Bioprocess Engineering,2014(1):8-12. |
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| Authors: | HE Yanqing ZHANG Longping ZHANG Jian BAO Jie |
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| Institution: | ( State Key Laboratory of Bioreactor Engineering, School of Bioengineering, East China University of Science and Technology,Shanghai 200237,China) |
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| Abstract: | A helical ribbon stirrer was equipped into the reactor to test if the mixing problem could be solved.The cellulose conversions after 72 hours enzymatic hydrolysis of 77.55% and 87.11% in the pretreatment with agitation were obtained when the sulfuric acid dosage reached 2.0%, and 2.5%（ m/m） ,respectively,it increased by 7.6% and 2.4% compared with those in statical pretreatment.The level of inhibitors generated from the pretreatment remarkably decreased.CFD was applied to illustrate the improvement of the pretreatment with agitation.CFD modeling showed that the mixing of the steam and corn stover improved with the agitation speed increased. |
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| Keywords: | helical ribbon stirrer lignocellulose dilute acid pretreatment computational fluid dynamics |
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