extractive distillation
extractive distillation
(OP)
hi,
i am using benzene as an entrainer for separating a
solution of dimethyl formamide and water, the two being
miscible in each other.boiling point of dimethyl formamide is 124degree celsius.can someone please explain me the
equilibria,liquid-liquid and l-v, in this process.where
can i find data on ternary heterogenous azeotropes
i am using benzene as an entrainer for separating a
solution of dimethyl formamide and water, the two being
miscible in each other.boiling point of dimethyl formamide is 124degree celsius.can someone please explain me the
equilibria,liquid-liquid and l-v, in this process.where
can i find data on ternary heterogenous azeotropes





RE: extractive distillation
RE: extractive distillation
i will get two immiscible layers.one is the DMF-benzene solution,other is the DMF-water solution,a heterogenous
azeotrope.can i make my calculations taking the vapour
pressures of the two layers based on roults law .for that i need to know the compositions of the two phases which depends on the solubility of benzene in both components.
is it the right way to proceed.can u advice m on that
RE: extractive distillation
The presence of two liquid phases doesn't necessarily mean there is a ternary azeotrope.
Depending on their concentration, benzene and water may boil away as a binary (heterogeneous) azeotrope leaving behind the high boiling DMF.
RE: extractive distillation
RE: extractive distillation
thank u for that information.it is a hetrogenous
azeotrope with benzene and DMF forming one liquid phase
and DMF-water the other phase.now treating it as a heterogenous azeotrope dmf-benzene phase exerts it own
vapour pressure and viceversa with the other phase.can
the concentrations of the individual components in vapour
phase be calculated treating the two phases as binary solutions and the whole system as a heterogenous azeotorpe
RE: extractive distillation