Please help with this chemical engineering question! I posted it in the chemistr

Question

Please help with this chemical engineering question! I posted it in the chemistry category because the chemical engineering one doesn't exist.

The figure shown below describes a junior manufacturer of ethyl alcohol (Et0H) in a steady state continues process (separating at high temperature) which produces 20% of the feed (F) as a product (P) Given that the ratio of ethanol mass fraction in the vapor stream to that in the waste stream is 1.5, a) carry out degree of freedom analysis on the overall process b) write and simple the general balance equation for the process c) Calculate all unknowns in the process, if possible, Show the sequence of your solution using the D.O.F analysis on each selected unit. All compositions are in wt%

Explanation / Answer

Solution:

The computation are expressed below,

(a) Degree of freedom = C - P + 2

= 2 - 2 + 2 = 2

(b) As per degree of freedom two equations are required,

0.3 EtOH + 0.7 H2O = Vapor stream

0.6 EtOH + 0.4 H2O = Recycle stream

(c) D.O.F for the reaction scheme is,

EtOH contains C,H,O and Water contains H, O

DoF = 2 - 3 (C,H,O) + 1 (selectivity) = 0

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.