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ID:11537343
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时间:2018-07-12
《多级气液联合搅拌新型cstr反应器研制及其效益探析》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、多级气液联合搅拌新型CSTR反应器研制及其效益探析 摘要:针对传统CSTR反应器存在搅拌不均匀、微生物与有机物接触不充分、顶层易结壳、能源转化效率低、搅拌装置更换频繁、维修费用高等问题,研制了一种多级气液联合搅拌新型CSTR反应器,其包括连续搅拌全混合厌氧反应器主体、文丘里管、多级外循环管路。利用文丘里管实现了气液联合搅拌的效果,用泵把发酵液吸出,再通过文丘里管将其射入,沼气在射入位置的上部形成搅拌作用,可以防止发酵液上层结壳,液体通过流出和射入的液位差形成搅拌作用,而且可以根据发酵过程的不同情况,对发酵原料进行不同形式、不同程度的搅拌。与传统的CSTR反应器进行比较,新型CSTR反
2、应器在造价上要比传统CSTR反应器贵0.450万元,但是在年运行费用上要比传统的CSTR反应器节省0.631万元,所以新型CSTR反应器的经济效益更高关键词:气液联合搅拌;文丘里管;CSTR反应器;厌氧消化中图分类号:S237文献标识码:A文章编号:0439-8114(2017)01-0153-04DOI:10.14088/j.cnki.issn0439-8114.2017.01.039DevelopmentandBenefitAnalysisofa11Multi-stageGas-liquidStirredDigester――NewContinuousStirred-TankReac
3、torLIUJian-feng,ZHANGWu-di,YINFang,WANGChang-mei,ZHAOXing-ling,LIUJing,YANGHong,LIUShi-qing(EnergyandEnvironmentalScienceInstitute,YunnanNormalUniversity,Kunming650500,China)Abstract:FocuseontheproblemsoftraditionalCSTRreactorsuchasinunevenmixing,microbesincontactwithorganicmatterisnotsufficient
4、,thetopcrustiseasy,lowenergyconversionefficiency,astirringdevicechangefrequentlyandthehighermaintenancecosts.Wedevelopedamulti-stagegas-liquidjointstirredstyleCSTRanaerobicdigester.ThenewCSTRreactoriscomposedofmixingcontinuousstirredanaerobicreactormainbody,Venturitube,multi-stageoutsidecirclepi
5、peline.Theventuritubeplaysanimportantroletoachieveajointgas-liquidstirringeffect,usingapumptosuckoutthebio-slurry,andthentoshotthroughtheventuritube,withtheresultofgasplusesintheupperposition,itwillhavefunctionofstirringsothatitcanpreventtheupperbio-slurryfromformingshell.Asaresultof11thattheliq
6、uidflowingpowerofthedifferentlevelsbetweentheentranceandtheshootinglevel,anagitationisgenerated.Furthermore,ourdigestercanprovidemanykindsofagitationsaccordingtodifferentsituationsandfermentationprocess,tofitdifferentfermentationrawmaterialsindifferentformsanddegrees.Itiscomparedwiththeconventio
7、nalCSTRreactors,itshowedthattheformercostsismorethanthelatter,withabout4500RMB,butthenewCSTRreactorcansave6310RMBinoperatingcoststhantheoldonesperyear,sotheeconomicalbenefitsofnewCSTRreactorisbetter.Keywords:gas-liquidmixing
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