GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VIII (NEW) EXAMINATION — WINTER 2018
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Subject Code: 2180502 Date: 26/11/2018Subject Name: Petroleum Refining & Petrochemicals
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
- Draw neat diagram where necessary.
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MARKS
Q.1 (a) Give classification of crude oil. 03
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(b) Write short note on oil fields and refineries in India. 04
(c) Discuss about different test and properties of petroleum oil 07
Q.2 (a) List out various additives and its importance for gasoline. 03
(b) Write importance of dehydration and desalting of crudes. 04
(c) In connection with thermal cracking explain the following: 07
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Feed, reaction mechanism, operational variables, productsOR
(c) Describe different arrangement of distillation towers in 07
petroleum fractioning with the help of neat sketches
Q.3 (a) Enlist major petrochemical units in India. 03
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(b) Write explanatory note on Visbreaking. 04
(c) Discuss various types of naphtha and their important 07
properties & applications.
OR
Q.3 (a) Write short note on types of diesel & its important 03
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Properties.(b) Discuss the process of lead doctoring of gasoline with 04
reactions and PFD
(c) Discuss electric desalting process in brief. 07
Q.4 (a) List various dew axing processes? Which is the major solvent 03
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used for dew axing?(b) Explain Merox sweetening process for gasoline treatment 04
(c) Discuss catalytic reforming process with respect to the 07
following points: Objective, feedstock, catalyst used, Major reactions
OR
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Q.4 (a) Enlist different petrochemicals obtained from Propylene. 03
(b) What is the principle of propane deasphalting? 04
(c) State different methods for treatment of Lube oil. Discuss 07
any one in detail.
Q.5 (a) Define/Explain the following terms: 03
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(1) Smoke point (ii) flash point (iii) Pour point(b) Discuss major engineering problem associated with 04
manufacturing process of ethylene oxide.
(c) Write note on manufacturing of formaldehyde and its uses. 07
OR
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Q5 (a) Discuss industrial uses of Vinyl Chloride. 03
(b) Explain properties of high Density Polyethylene and its 04
application.
(c) Describe manufacturing process of styrene butadiene rubber 07
with neat process flow diagram and discuss major engineering problems involved in it.
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