Chemical Engineering - Petroleum Refinery Engineering - Discussion

Discussion Forum : Petroleum Refinery Engineering - Section 2 (Q.No. 20)
20.
Which of the following is desirable in diesel and kerosene but is undersirable in gasoline ?
Aromatics
Mercaptans
Paraffins
Naphthenic acid
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
15 comments Page 1 of 2.

Karguvelayyanar.R said:   1 decade ago
1. Gasoline requires more octane number for good performance of engine. Hence octane number possess high aromatics. So aromatics is desirable in gasoline.

2. Diesel requires less auto ignition temperature. At the same way good kerosene requires high smoke point.

So both need high content of paraffins.

TRUSHAL said:   5 years ago
SUMMARY:

Aromatics are quite undesirable in kerosene and diesel. Aromatics increases the octane number for gasoline thereby required in Gasoline. Aromatics is not good for diesel because it will create gum.

Paraffins cause Knocking-in Gasoline thereby, not required in Gasoline.

Datong John said:   7 years ago
C is the right answer because, Aromatics increases octane number for gasoline thereby required in Gasoline. Paraffins cause Knocking in Gasoline thereby, not required in Gasoline. Mercaptan and Naphthenic acids not required in Gasoline.

Chu Van Phuc said:   1 decade ago
Let's explain to me:

Why do you want to be undesirable Aromatics?

I think Aromatics has octane number high and gasoline need it. But Aromatics is not good for diesel because it will crease gum.

JAIVEER SINGH said:   8 years ago
Paraffins is right answer, because aromatic undesirable in diesel & kerosene.

Rajesh said:   8 years ago
Option C is correct.

Aromatics has undesirable in kerosene and diesel.

Michael said:   8 years ago
Aromatics are quite undesirable in kerosene and diesel.

Manikannan said:   1 decade ago
Gasoline needs aromatics but diesel needs paraffins.

Brijesh Pathak said:   7 years ago
Yes, Option C is correct. I also agree.

Subash SHARMA said:   8 years ago
No, the Answer should be paraffins.


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