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EH 0 5 Dichromate de potassium { K 2 Cr 2 0 7 ) esengeli kozwama na solution ya mayi ya 2 5 % w

EH05
"Dichromate de potassium {K2Cr207) esengeli kozwama na solution ya mayi ya 25%w1 K2Cr207. Lilei oyo ya sika."
(F1) esangani na courant ya recyclage (R) pe etindami lokola alimentation (F2Y na cristallisateur/centrifugeuse. Ba courant misato ebimaka
cristallisateur : ya liboso ezali gteau filtre {M1) oyo ezali na ba cristaux nionso ya dichromate de potassium na rapport ya
85%w1 cristaux (pure K2Cr207) na 15%w1 solution, nzoka nde ya mibale ezali solution oyo etikali (9:1 ratio ya poids
na solution na M1) oyo esali courant ya recyclage (R). Solution na ba flux M1 na R nionso mibale ezali na
85%w1 H20 na 15%w1 K2Cr207. Ebale ya misato oyo ebimaka na cristallisateur ezali mopepe ya mayi ya peto (W), oyo ezali
mai yango ekmaki mputulu na solution ya bilei mpo na kosala ba cristaux. Na nsima, baleisaka ruisseau M1 na esika oyo bakaukisaka biloko, epai...
mai oyo etikali ekmaka na mopp na ndenge oyo mopp ya kobima (AE) ezalaka na 8%mo1e H20.
Ba cristaux ya peto, ya kokauka esalemaka lokola produit na courant ya produit (P). Pona taux ya production ya 1000 kg
ba cristaux na ngonga moko, yanol na mituna oyo elandi:
a) Kosala mpe kotia bilembo na diagramme ya dbit ya elanga
b) Kosala calcul ya masse mayi oyo e vaporer na cristallisateur (kg/hr).
c) Kosala calcul ya dbit total ya masse ya courant F2(kg/hr) pe composition ya fraction ya masse na yango
d) Kosala calcul ya ba moles ya mopepe oyo elekaka na scheuse (kmolelhr)".

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