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GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER-VIII (NEW) EXAMINATION — WINTER 2020
Subject Code:2180502 Date:25/01/2021
Subject Name:Petroleum Refining & Petrochemicals
Time:02:00 PM TO 04:00 PM Total Marks: 56
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Instructions:
- Attempt any FOUR questions out of EIGHT questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
MARKS
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Q.1 (a) Discuss in brief about the organic theories for formation of crude oil. 03
(b) What is the role of reformer unit in refinery? Which are the major 04
reactions taking place in that unit?
(c) Define: (1) Diesel Index (2) Flash point (3) Smoke point (4) Cetane 07
Number (5) Penetration Index (6) Kinematic Viscosity (7) Cloud point
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Q.2 (a) Brief about the dehydration and desalting of crude oil. 03
(b) Write a brief note on the composition of crude oil. 04
(c) With neat sketch, explain MEROX treatment in detail. 07
Q.3 (a) Discuss about different impurities present in crude oil. What is 03
sweetening? List few methods for sweetening.
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(b) Compare Furfural and Phenol extraction treatments. 04(c) List major reactions of cracking and; explain Fluidized Catalytic 07
Cracking in detail.
Q.4 (a) Write a brief note on delayed coking. 03
(b) What are additives? Explain various additives and its importance for 04
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gasoline.(c) Explain in detail about the reformer unit of the refinery. 07
Q.5 (a) List major tests for kerosene and brief any one. 03
(b) Explain the parameters which affects the reforming. 04
(c) State different methods for treatment of Lube oil. Discuss any one in 07
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detail.Q.6 (a) Discuss properties and uses of Acetic acid. 03
(b) Write a note on propane deasphalting. 04
(c) With neat flow diagram, discuss manufacturing process of Styrene. 07
Q.7 (a) Discuss in brief about the petrochemicals which are obtained from 03
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propylene.(b) Discuss major engineering problems associated with 04
manufacturing process of ethylene oxide.
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Firstranker's choiceQ.8 (a) Explain manufacturing process of formaldehyde from methanol with 07
flow sheet.
(b) Discuss industrial uses of Vinyl Chloride. 03
(c) Write uses and major properties of High Density Polyethylene and Low 04
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Density Polyethylene.Describe manufacturing process of styrene butadiene rubber with neat 07
flow diagram and discuss major engineering problems associated
with it.
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