Download SGBAU (Sant Gadge Baba Amravati university) B-Tech/BE (Bachelor of Technology) 5th Sem Petrochemical Technology II Previous Question Paper
USC - 11031 : Petrochemical Technology - H (Special Technology - II) '
Paper - 5 PC 04
AW - 3161
l?ylislw Max. Marks : 80
P. Pages : 2
Time : Three Hours
Notes : 1 Due credit will be given to neatness and adequate dimensions.
2. Diagrams and chemical equations should be given wherever necessary.
3. Illustrate your answer necessary with the help of neat sketches.
4 Discuss the reaction, mechanism wherever necessary.
5
Use of pen Blue/Black ink/re?ll only for writing the answer book.
SECTION ? A
l. a) What are the various factors that promote the use ot?many different processing plans in the 2
re?nery?
b) Re?ning operations must, in aggregate, reduce the carbon-hydrogen ratio of the crude oil 4
and intermediate streams that they process. How this can be accomplished in the re?nery?
c) High conversion re?nery includes not only catalytic cracking and/or hydrocracking lo 8
convert gas oil fractions, but also coking unit. Draw the neat sketch of typical high
conversion re?nery.
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2. a) Why distillation of high boiling residue is carried out under reduced pressure? 2
b) How crude oil and other hydrocarbons are converted into ?nished petroleum products. 4
c) "Conversion units form the essential core of modern re?ning operations". Explain. 8
3. a) Based on which properties the quality of solvents is judged? 2
b) As per BHARAT STAGE-IV (BS?IV) speci?cations What is the upper limit on ole?n, 4
aromatic and sul?ir content of general and premium gasoline fuel?
c) Any engine during service has to encounter different weather conditions. For smooth 7
running of the vehicle under such circumstances, how octane rating of the fuel is adjusted?
OR
4. a) Which propenies of lubricants govern case. of staning of an engine? 2
b) Mention the molecular formula, boiling point and cetane number of n-cetane, 2, 2, 4, 4, 6, 3
8, 8~heptamethyl nonane and a-methyl naphthalene.
c) Why diesel fuel speci?cations include an upper viscosity limit? 3
d) What are the important tests and properties of gasoline? Mention the BHARAT STAGE-IV 5
(BS-IV) distillation speci?cations prescribed for premium gasoline.
AW - 3161 1 " P.T.O
5. a)
b)
C)
6. a)
b)
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9. :1)
b)
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12.
Name the common emulsifying agents found in crude oil.
What is the order of di?iculty of sulfur removal from petroleum fractions? Name these
sulfur compounds with suitable example of each.
Discuss the effect of operating parameters on the performance of electrical desalter.
OR
Mention the chemistry inmlved in the Merox sweetening process.
Discuss the Turbo Expander natural gas liquefaction process in detail with neat sketch of
?ow diagram.
SECTION - B
Discuss the propane deasphalting process in detail with neat sketch of ?ow diagram and the
process parameters involved.
OR
Modem re?neries are practicing N-methyl-Z-pyrolidone extraction for viscosity index
improvement of lube oil base stock. Discuss this process in detail with neat sketch of ?ow
diagram and process parameters involved.
The products formed in the catalytic cracking all the result of both primary and secondaty
reac tions. How these primary reactions can be represented?
Maximizing the gasoline yield is the most common objective ofa FCC and RFCC units.
However, many units are designed to maximize the middle distillates 0r LPG including
propylene and butylcne. Discuss these thxee principal modes of operation in detail.
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i-Iydrocracking has become a powerful tool to the re?ner in the production of quality
gasoline from the feeds of relativel) refractory nature like cycle oils, coker distillates etc.
Discuss the hydrocracking process: in detail with neat sketch of ?ow diagram and process
parameters involved.
Disc uss the continuous catalyst regeneration (C C R platforming) reforming process in detail
with neat sketch of ?ow diagram and process parameters involved.
0R
High quality blends of motor fuel can be obtained by alkylation process. Discuss the sulfuric
acid process with feedstock, process parameters and chemistry involved, in detail.
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This post was last modified on 10 February 2020