甲醇精馏考试题（methanol distillation test）

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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