Indian Institute of Technology Kharagpur (IIT-K) 2007 M.Tech Chemical engineering Petrochemical technology - Question Paper
INDIAN INSTITUTE OF TECHNOLOGY, KHARAGPUR Mid-Spring Semester Examination, 2006-2007 Subject'. Petrochemical Technology Subject No.: CH62010 Date: 19.02.2007 (AN) Time: 2 Hrs. Full Marks: 30
Instruction: Answer All Questions
1. (a) Answer the following questions: [4x11
(i) What is the function of steam in the olefin production process by naphtha cracking?
(ii) How does the partial pressure of feed naphtha affect the hydrogen yield of the cracking process?
(iii) What are various impurities of gaseous feedstocks for petrochemicals?
(iv) Which technique is generally followed to separate components of refinery gas?
(b) Match the processes in Group I with the products in Group II: [2|
|
Group I |
Group II |
|
Sachsse |
Syngas |
|
Sohio |
Gasoline |
|
PRICO |
Acetylene |
|
Mobil |
Ethylene oxide |
|
LNG | |
|
Acrylonitrile |
(c) Match the processes in Group I with the solvents in Group II: |2)
|
Group I |
Group II |
|
Girbotol |
Sulfolane |
|
Rectisol |
Alkanolamines |
|
Purisol |
Propylene glycol methyl ether |
|
Selexol |
N-methyl pyrrolidone |
|
Methanol |
2. (a) Discuss the process of autothermal reforming of natural gas for the production of Syngas', (b) What are the various petrochemicals that could be produced from 'Syngas? |3+2|
3. (a) Discuss with a neat flow .sheet the balanced chlorination-oxychlorination process for the production of vinyl chloride monomer (VCM).
(b) What other balanced processes are available for VCM production? |4+2]
4. (a) Discuss with a suitable flow sheet the Oxo process for the production of n-butanol fron propylene. Mention clearly the catalyst system and the process conditions that are used to gc more than 90% selectivity for the desired product.
(b) Give a list of other important chemicals that are produced from propylene. [4+21
5. Discuss the following processes with chemical reactions: [5
(a) Ethylene glycol from ethylene and (b) Formaldehyde from methanol.
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| Earning: Approval pending. |
