The conventionalcontinuoustransesterificationprocessesas
discussed earlierneedlongerresidencetime,resultinginincreas-
ing reactorvolume,highcapitalcost,large‘‘footprint’’and
difficult tocontrol.ThepresenceofFFAandwaterinthefeedstock
causes soapformationasaby-productofthereaction.Soap
formation causesareductioninreactionyieldandlossof
biodiesel productviaentrainmentinthesoapphaseduringthe
washing process.IffeedstockwithahighpercentageofFFAis
used, anenergyextensivefeedstockpre-treatmentisrequired
prior tothetransesterificationreaction.Anotherconcernis
regarding theremovalofresidualTGandGLYfromthebiodiesel
product. Duetotransesterificationisanequilibriumreaction,itis
difficult todrivethereactiontocompleteconversionoftheTG,
and thusproductsrefiningprocessisnecessary.Thepost-treat-
ment oftheproducts,by-productsandwastesnotonlywillgive
rise toachallengingwastewatertreatmentproblembutalso
incur significantmanufacturingcosts.Besides,owingtoimmisci-
bility ofoilsandMeOH,thetwo-phasetransesterificationreaction
will causemass-transferlimitationintheprocess.
The conventionalcontinuoustransesterificationprocessesasdiscussed earlierneedlongerresidencetime,resultinginincreas-ing reactorvolume,highcapitalcost,large‘‘footprint’’anddifficult tocontrol.ThepresenceofFFAandwaterinthefeedstockcauses soapformationasaby-productofthereaction.Soapformation causesareductioninreactionyieldandlossofbiodiesel productviaentrainmentinthesoapphaseduringthewashing process.IffeedstockwithahighpercentageofFFAisused, anenergyextensivefeedstockpre-treatmentisrequiredprior tothetransesterificationreaction.Anotherconcernisregarding theremovalofresidualTGandGLYfromthebiodieselproduct. Duetotransesterificationisanequilibriumreaction,itisdifficult todrivethereactiontocompleteconversionoftheTG,and thusproductsrefiningprocessisnecessary.Thepost-treat-ment oftheproducts,by-productsandwastesnotonlywillgiverise toachallengingwastewatertreatmentproblembutalsoincur significantmanufacturingcosts.Besides,owingtoimmisci-bility ofoilsandMeOH,thetwo-phasetransesterificationreactionwill causemass-transferlimitationintheprocess.
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conventionalcontinuoustransesterificationprocessesas
กล่าวถึง earlierneedlongerresidencetime, resultinginincreas-
ไอเอ็นจี reactorvolume, highcapitalcost, large''footprint''and
tocontrol.ThepresenceofFFAandwaterinthefeedstock ยาก
ทำให้เกิด soapformationasaby-productofthereaction.Soap
ก่อ causesareductioninreactionyieldandlossof
ไบโอดีเซล productviaentrainmentinthesoapphaseduringthe
process.IffeedstockwithahighpercentageofFFAis ซักผ้า
ใช้ anenergyextensivefeedstockpre-treatmentisrequired
tothetransesterificationreaction.Anotherconcernis ก่อน
theremovalofresidualTGandGLYfromthebiodiesel เกี่ยวกับ
สินค้า Duetotransesterificationisanequilibriumreaction, ITIS
ยาก todrivethereactiontocompleteconversionoftheTG,
และ thusproductsrefiningprocessisnecessary.Thepost-ลูออไรด์
oftheproducts ment, โดย productsandwastesnotonlywillgive
เพิ่มขึ้น toachallengingwastewatertreatmentproblembutalso
เกิดขึ้น significantmanufacturingcosts.Besides, owingtoimmisci-
รับผิดชอบ ofoilsandMeOH, thetwo-phasetransesterificationreaction
จะ causemass-transferlimitationintheprocess
การแปล กรุณารอสักครู่..