Chemical Engineering - Petroleum Refinery Engineering

36. 

Which of the following is a non-regenerative fixed bed catalytic reforming process ?

A. Hydroforming
B. Thermofer catalytic reforming
C. Platforming
D. Hyperforming

Answer: Option C

Explanation:

Platforming

The Universal Oil Products Company introduced in 1949 the first platinum reforming process, termed Platforming. Today, although several other processes exist, Platforming still accounts for the greater part of platinum reforming operations. It employs a catalyst consisting of platinum on alumina with a small but critical percentage of halogen added to maintain the correct balance between the conversion of paraffin by dehydrocyclization, hydrocracking, and isomerization. Platforming raises the research octane numbers of feed naphthas from 30 to 50 to over 90 with 85 to 95 percent yields.

This is a fixed bed, non-regenerative process, operating at 850 to 950° F and at 200 to 700 PSIG. Catalyst life may exceed 200 bbl. per lb catalyst, although lower values are usual.


37. 

Aniline point of high speed diesel may be about __________ °C.

A. 35
B. 70
C. 105
D. 150

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

38. 

Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners ?

A. PCM
B. Tar
C. Light diesel oil
D. Low viscosity furnace oil

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

39. 

A typical yield of kerosene in straight run distillation of crude oil may be about __________ percent.

A. 4
B. 10
C. 18
D. 26

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

40. 

The vacuum maintained in vacuum distillation unit for reduced crude is about __________ mmHg.

A. 1.2
B. 12
C. 120
D. 700

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.