Purge and recycle stream, Chemistry

Assignment Help:

The fresh feed to an ammonia production process contains nitrogen (N2) and hydrogen (H2) in stoichiometric proportion, along with an inert gas (I).   The feed is combined with a recycle stream containing the same three species, and the combined stream is fed to a reactor in which a low single pass conversion of nitrogen is achieved.  The reactor effluent flows to a condenser.  A liquid stream containing essentially all of the ammonia formed in the reactor and a gas stream containing all of the inerts and the unreacted nitrogen and hydrogen leave the condenser.  The gas stream is split into two fractions:  one is removed from the process as a purge stream, and the other is the recycle stream combined with the fresh feed. 

a.  Let xI0 be the mole fraction of inerts in the fresh feed, fsp the single pass conversion of nitrogen in the reactor and yp the fraction of the gas leaving the condenser that is purged (mol purged/ mol total). Taking a basis of 1 mol fresh feed, draw and fully label a process flowchart, incorporating xI0, fsp, and yp in the labeling.  Then, assuming that the values of these three variables are given, write a set of equations for the total moles fed to the reactor (nA), the moles of ammonia produced (np), and the overall nitrogen conversion (fov).  Each equation should involve only one unknown variable, which should be circled.

b.  Solve the equations of part a for xI0=0.01, fsp=0.20, yp=0.10. 

c.  Briefly explain in your own words the reasons for including (i) the recycle stream and (ii) the purge stream in the design process.


Related Discussions:- Purge and recycle stream

Electronic configuration exhibits, 3d 10 4s0 electronic configuration exhi...

3d 10 4s0 electronic configuration exhibits by; (1) Zn ++                                (2) Cu ++                          (3) Cd ++                      (4) Hg ++

What are the properties of water?, Q. What are the properties of water? ...

Q. What are the properties of water? Ans. Water is a colorless, odorless, tasteless liquid with a melting and freezing point of 0 o C and a boiling point of 100 o C at 1 a

.glycol, i wanted the glycol properties and its chemical reactions n prepar...

i wanted the glycol properties and its chemical reactions n preparation

For ns orbital, For ns  orbital, the magnetic quantum number has value: ...

For ns  orbital, the magnetic quantum number has value: (1) 2             (2) 4        (3) - 1               (4) 0 Ans:0

Ketone bodies conversion, I wish to convert beta hydroxy butyrate to either...

I wish to convert beta hydroxy butyrate to either acetoacetate/ acetone or any other forms to be detected using some dyes. Kindly help me.

S-block elements, What are the genral properties of s-block elements

What are the genral properties of s-block elements

Calculate the composition of the vapor and liquid, A flash separator "flash...

A flash separator "flashes" (abrupt increase in temperature and pressure) a liquid stream containing multiple species. Not all of the liquid vaporizes, but the vapor that does form

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd