Calculate the evaporator pressure and rate of heat, Chemistry

A liquid stream containing half n-hexane and half n-pentane at 80°C and 5 atm is fed at a rate of 100 mol/hr to a flash evaporator operating at pressure (P) and 65°C. The decrease in pressure causes a lot of the liquid to vaporize. The liquid and vapor exit streams are in equilibrium with each other at the same temperature and pressure as in the evaporator. The liquid exit stream contains 59% hexane.

a. Calculate the evaporator pressure (P), the fraction of hexane in the vapor stream, and the flow rates of the exiting liquid and vapor streams.

b. Calculate the rate of heat flow to or from (specify which, to OR from) the evaporator.

c. Usually we think of evaporators as units that increase temperature to vaporize species. Explain how this flash evaporator is able to vaporize the feed with a decrease in temperature.

 

 

 

Posted Date: 2/18/2013 6:01:51 AM | Location : United States







Related Discussions:- Calculate the evaporator pressure and rate of heat, Assignment Help, Ask Question on Calculate the evaporator pressure and rate of heat, Get Answer, Expert's Help, Calculate the evaporator pressure and rate of heat Discussions

Write discussion on Calculate the evaporator pressure and rate of heat
Your posts are moderated
Related Questions
Certain basic properties of lakes and oceans are important to understanding how they "work". One of these is the density of the water, and its changes. Dense (or heavier) water wan

Is AlCl 3 polar.........? If not then why does it react with H 2 O? Also is NaCl non polar?How to decide whether a given compound is polar or not?? solution) If a bond is between

Electronic configuration  1s 2 2s 2 2p 6 3s 2 3p 6 3d 5 4s 1   represents: (1) Ground state (2) Excited state (3) Anionic state (4) All of these Ans:  Ground

Difference between activity coefficient and mean activity coefficiet

Given that ?H°298 for the reaction is -92.2 kJ mol-1, which is larger, the total bond dissociation energy of the reactants or the total bond dissociation energy of the products?

Condensation reaction of carbonyl compounds Nucleophilic addition reaction of compounds comprising carbonyl group along with those compounds that have at least one acidic hydro


The order of reaction is the number of moles whose concentrations verify the rate of a reaction at a given temperature

A 0.5 m 3 rigid tank is filled with saturated liquid water at 200 o C. A valve at the bottom of the tank is opened, and liquid is withdrawn from the tank. Heat is transferred to t

Explain the Systems at high pressure - Phase Diagram? Binary phase diagrams begin to look different when the pressure is greater than the critical pressure of either of the pur