GTU BE 8th Semester 180502 Petroleum Refining and Petrochemicals Summer 2018 Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE – SEMESTER ?VIII (old) – EXAMINATION ? SUMMER 2018
Subject Code:180502 Date:30/04/2018
Subject Name:Petroleum Refining & Petrochemicals
Time:10:30 AM to 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Explain Atmospheric distillation and Vacuum distillation of crude oil explaining
difference between them.
07
(b) Discuss the origin and formation of petroleum along with organic theories.
07

Q.2 (a) State the desirable characteristics and important tests of diesel and kerosene. Discuss
various additives of diesel along with their purposes
07
(b) Why coke should be removed from crude? Discuss process of flexi coking in detail
07
OR
(b) Define (a) API (b) Octane number (c) Flash and fire point (d) Diesel index (e) smoke
point (f) Cloud point.
07

Q.3 (a) Discuss manufacturing process of LPG with flow sheet.
07
(b)Write a note on propane deashphalting.

07

OR

Q.3 (a) What is sweetening? Explain oxidation of mercaptans to disulfides.
07
(b) Discuss about two important properties for Kerosene.
07

Q.4 (a) Describe the manufacturing process methanol along with its application
07
(b) Describe with a neat flow diagram manufacture of Ethylene Oxide.
07
OR
Q.4 (a) Explain manufacturing process with complete flow sheet of styrene butadiene rubber with
its application
07
(b) Write a note on manufacturing of vinyl acetate and its uses
07

Q.5 (a) (b)Compare LDPE and HDPE. Discuss the manufacturing process of LDPE.
Write short note on growth of petrochemical sector and challenges ahead.
07

OR
Q.5 (a) Discuss manufacture of acetic acid.
07
(b) Describe manufacturing process of poly vinyl chloride. List out the required raw materials
and related chemical reaction.
07
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