Chemical engineering - process design, coursework, Other Subject

Problem
Styrene can be produced by the reactions:
Ethylbenzene ! Styrene+H2
Ethylbenzene ! Benzene+Ethylene
Ethylbenzene+H2 ! Toluene+CH4
The reactions take place at 600C and 1.7 bar. We want to produce 100 mol
h of styrene. The market prices
are 22 £/mol for styrene, 10 £/mol for benzene and 7 £/mol for toluene. The ethylbenzene feed stream
contains 2% benzene and costs 16 £/mol. Fuel price is £10 for 106 cal. Assume that fuel components
have normal boiling points larger than 50C. For the product distribution, the following correlations have
been determined experimentally by chemists:
mol Benzene
mol Styrene = 0:333x??0:215x2+2:547x3
mol Toluene
mol Styrene = 0:084x??0:264x2+2:638x3
where x is the ethylbenzene conversion.
Determine and justify the following decisions (remember: think as an engineer!):
1. Should the above process be continuous or batch?
2. Based purely on the level 0 information, what is a reasonable upper bound on the conversion we
should consider?
3. Do we need feed purification?
4. Do we use gas recycle and purge stream(s)?
5. What is the number of product streams?
6. Draw the input-output flowsheet.
7. Develop the overall material balances for the input-output structure as a function of the clearly identified
design variable(s).
8. Plot the economic potential as a function of the design variables.
9. Above what conversion does the above process become unprofitable?
10. Produce a stream table for what you would consider to be a good conversion.
Posted Date: 2/13/2012 3:36:34 PM | Location : United States







Related Discussions:- Chemical engineering - process design, coursework, Assignment Help, Ask Question on Chemical engineering - process design, coursework, Get Answer, Expert's Help, Chemical engineering - process design, coursework Discussions

Write discussion on Chemical engineering - process design, coursework
Your posts are moderated
Related Questions
How would land elevation have changed if Coronado had traveled 150 miles due west from what is today Arizona instead of east toward new Mexico?

1. Give some suggestions to improve the Government and Public Relations.

Question 1 Write a long note on the audience of online media advertising and audience analysis (aspect of timing and aspect of time vs frequency) Question 2 Describe the vari



Explain observation method of fact finding with examples

Modern Cryptography Systems: A Hybrid Approach In fact, a mixture of both public key and traditional symmetric cryptography is used in current cryptographic systems. The motiva

History of New media: The term has actually been used since the 1970s by researchers conducting social, psychological, economic, political and cultural studies of information and

Health cares in rural areas should be well equipped with machineries such as x-rays and CT in order to be able to meet the patient's expectations. At the same time, there should be

Test the hypothesis that the proportion favoring Romney in the Gallop poll is the same as the proportion favoring Romney in the Rasmussen poll against the alternative that the prop