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
There are some dimensions which are common between teaching and counselling a) Based on your experience as teachers and the knowledge gathered in this module, analyse five dime

1. to a person drinking and taking tranquilizers: thats a dumb thing to do!"

What Is Our Responsibility To Nature? Our responsibility towards nature is to take care of her. Don't throw out waste things out your car windows for other people to pick up, g

Movies and Their Impact on Society: We are all movie buffs, and there is no denying the fact. Nonetheless, have you ever stopped to wonder about the impact that movies have on our

Whatever the maxim cuiusest solum may have signified to the common lawyer of earlier centuries, it has since become obvious that its legal meaning is now heavily qualified by the a

the purpose of this assignment is to evaluate the potential for a new business or business expansion to a foreign country of your choice. you will evaluate business opportunities i

write persuasive memo mbout reduce the number of mail shipment and suggest to use email or fax

what is conclusion of emulsions??

Fisheries & Wildlife Division (FWD): The Fisheries and Wildlife Division (FWD) develops supports and implements programs for urban fish and wildlife conservation, protection, recr

Question: (a) A presentation might fascinate, bore or irritate the audience. Explain the important criteria you would analyse for a successful presentation. (b) Describe