文献类型：期刊文献

中文题名：螺带桨搅拌在木质纤维素稀酸预处理反应器中的应用

英文题名：Application of helical ribbon stirrer in the reactor for dilute acid pretreatment of lignocellulose

作者：何燕青[1];张龙平[1];张建[1];鲍杰[1]

机构：[1]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

年份：2014

卷号：12

期号：1

起止页码：8

中文期刊名：生物加工过程

外文期刊名：Chinese Journal of Bioprocess Engineering

收录：CSTPCD;;CSCD:【CSCD_E2013_2014】；

基金：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)

语种：中文

中文关键词：螺带桨;木质纤维素;稀酸;预处理;计算流体力学

外文关键词：helical ribbon stirrer;lignocellulose;dilute acid;pretreatment;computational fluid dynamics

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H2SO4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。
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.