双环流厌氧反应器在酒精发酵中的应用_温晓涛

双环流厌氧反应器在酒精发酵中的应用温晓涛,李洪亮(郑州大学化学工程学院,河南郑州450002)摘要:利用新型双环流厌氧反应器进行小麦淀粉乳酒精发酵实验,研究了无环流和主发酵期(8～20h)发酵液强制双环流的小麦淀粉乳酒精发酵过程,实验过程中,外环流流量控制在600L/h。在主发酵期,用泵强制循环发酵液,可以防止料液沉淀,促进原料的水解和营养成分的分散。实验结果表明,强制环流明显提高了发酵终了醪液的酒度和淀粉利用率。关键词:酒精;发酵;双环流厌氧反应器;酵母中图分类号:TS261.1;TS262.2;TS261.3文献标识码:A文章编号:1001-9286(2007)05-0061-04StudyontheApplicationofDouble-loopAnaerobicBioreactorinAlcoholFermentationWENXiao-taoandLIHong-liang(ChemicalEngineeringCollegeofZhengzhouUniversity,Zhengzhou,He'nan450002,China)Abstract:Anew-typedouble-loopanaerobicbioreactorwasusedinalcoholfermentationofwheatenstarchmilk.Theal-coholfermentationprocess,withthefermentationliquidnotcirculatedandcompulsorilycirculatedfromtheeighthhourtothetwentiethhour,hadbeenstudied.Theouter-loopfluxwascontrolledat600L/hintheexperiment.Thecompulsorydoublecirculationofthefermentationliquorinchieffermentationperiodcouldpreventsolutiondepositionandalsoen-hancethehydrolysisofthesubstrateandthedistributionofnutritionalingredients.Theexperimentalresultsindicatedthatco