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ID:13073411
大小:55.00 KB
页数:26页
时间:2018-07-20
《甲醇精馏考试题(methanol distillation test)》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、甲醇精馏考试题(Methanoldistillationtest)Alcoholetherworkshop;distillation;examinationquestions1.GBhighgrademethanolrequirements,freeacidcontentislessthanorequalto?0.0015%2.GBhighgrademethanolrequirements,freealkalicontentislessthanorequalto?0.0002%3.methanolrectific
2、ationwastewater,methanolcontentcontrolrequirementslessthanhowmuch?0.3%4.methanolrectificationwastewaterpHvaluerequiredtocontrolinhowmuch?9-115.whatarethemainfactorsthataffecttheoperationofdistillationcolumninnormalproduction?Answer:thefeedbackflowofthereboile
3、rsteamquantityofthefeedcomponentsproducedamountofpressure.6.whennormalproduction,whatarethemainfactorsaffectingtheliquidlevelintherectifyingtower?Answer:backflow.Amountoffeed.Rectifyingtower,reboiler,heatingsteamquantity.Operatingpressureofrectificationtower.
4、Rectificationtowertemperature.Thetowerdistillatedischargeliquid7.whatarethemaincausesoftheexcessivelightcomponentsintheeffluentofthetowerintherectificationoperation?Thetowertemperatureislow8.whydoesthepretowerfeedfromthetop?Becausethetowerismainlytoremoveligh
5、tcomponents,feedfromtheupperpartisconducivetoremovaloflightcomponents.9.what'sthedutyofthedistillationsection?Themaintaskistoremovethecrudemethanolinwater,ether,twoalkanes,alcoholsanddissolvedgasandotherimpurities,whichconformstotheGB338-2004standardofrefined
6、methanol,andbyproductfuseltofuseltank,tomethanolwastewaterbiochemicaltreatment.10.whatkindofmaterialdoestheatmospherictowergetoutof?Fuseloilethanolmethanolwastewater11.whydoyouwanttoturnofftheoutletvalvewhenstartingthecentrifugalpump?Inordertounloadthemotorlo
7、ad,avoidtrippingduetoexcessivecurrentorevendamagetheequipment.12.whatisthefunctionofthecheckvalveinthechemicalsystem?Usedtopreventbackflowofmedia.13.distillationAseries,thereareseveralliquidlevelremotecontrolvalve?Whatarethey?6LV405A006prerefluxtowerlevelLV40
8、5A005pretowerliquidlevelvalveLV405A008pressurizedtowerlevelLV405A010atmospherictowerbottomliquidlevelvalveLV405A009pressurizedtowerbackflowslotliquidlevelvalveLV405A011refluxtowertankvalv
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