高长径比三相内环流反应器中细颗粒相含率和循环液速的分布研究.pdf

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1、第34卷第2期2013年4月化学工业与工程技术JournalofChemicalIndustry＆EngineeringV01．34No．2Apr．，2013高长径比三相内环流反应器中细颗粒相含率和循环液速的分布研究王宇1，刘永民h4，龙帅2(1．辽宁石油化工大学石油化工学院，辽宁抚顺113001；2．辽宁省抚顺矿业集团，辽宁抚顺113001)摘要：在高径比为22的三相内环流反应器中，在常温常压下以空气一水一石英砂为物系，研究了在不同粒径下上升区固含率、下降区固含率和上升区循环液速随表观气速的变化规律和不同粒径下轴向固含率的分布情况，以及在固体体积分数不同的条件下，平均

2、气含率和上升区气含率随表观气速的变化情况。结果表明：当粒径(d。)≤O．3mm时，上升区固含率随表观气速的增加呈平缓变化趋势，下降区固含率随表观气速的增加而增加；当0．3mm

3、02—0033—05Distributionstudyonphaseholdupandliquidcirculationvelocityoffineparticlesinthree-phaseinternal-loopairliftreactor、耐thbigratioofheighttodiameterWANGYul，LIUYongminl，LONGShuai2(1．CollegeofPetrochemicalEngineering，LiaoningShihuaUniversity，Fushun113001，China；2．LiaoningProvince，Fushu

4、nMiningGroup，Fushun113001，China)Abstract：Inthree—phaseinternal·loopairliftreactorwiththeratioofheighttoinnerdiameterof22，undernormaltemperatureandat—mospherewithair—water—quartzsandsparticlesasmattersystem，thechangendeofsolidholdupinriseranddowneonler，andtheliquidcir—eulationvelocityinri

5、serfollowingwithsuperficialgasvelocityarestudied，andthedistributionstatusofaxialdirectionsolidholdupofdiffer-entgraindiameterisresearched．Thevariationstatusofaveragegashddupandgasholdupinriserfollowingwithsuperficialgasvelocityatdifferentsolidvolumefractionisinvestigated．Theresultsshowth

6、atthesolidholdupinriserchangesgentlywiththeincreaseofthesuperficialgasvelocity，thesolidholdupindowncomerincreaseswiththeincreaseofgassuperficialvelocitywhengraindiameterd。≤0．3mm．Thesohdholdupincreasesafterthefirstdropwiththeincreaseofthesuperficialgasvelocityandthesohdholdupindowneomerde

7、creaseswiththein—creaseofgassuperficialvelocitywhen0．3toni