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


Question: The experience of growing old will bring with it many emotional and social traumas. These will be lived differently by those concerned and in some cases will need cou

what is the binding material for stone masonry

Question 1 Identify and explain the factors that affect migratory movements Question 2 Explain the causes and impact of the Tebhaga Movement Question 3 According to Ambe

1- Explain the role of theory in cultural anthropology. 2- Distinguish theories from truths and explain why theories need critical review and modification 3- Explain with exa

Question 1: During the past few decades, women's representation in a wide range of occupations has increased in Mauritius but discrimination on the basis of gender is still a m

Question 1 Write a short note on (i) Theatre of Cruelty; (ii) Poor theatre Question 2 Examine the Aristotelian conception of plot Question 3 Analyse the life history o

you being a teacher describe your experience regarding the role of school,parents,peers in imparting family life education

Selection process in HR