week 5

Question 1

is a term used to describe all different processes in which
hydrocarbon reacts with hydrogen. It includes hydrotreating, hydrocracking and
hydrogenation.

Answer 1

Hydroconversion

Question 2

is used to describe the process of the removal of sulfur, nitrogen
and metal impurities in the feedstock by hydrogen in the presence of a catalyst.

Answer 2

Hydrotreating

Question 3

is the process of catalytic cracking of feedstock to products with
lower boiling points by reacting them with hydrogen.

Answer 3

Hydrocracking

Question 4

is used when aromatics are saturated by hydrogen to the
corresponding naphthenes. (double bond to single bond)

Answer 4

Hydrogenation

Question 5

The main purpose of ________________ is to find the best way of mixing
different intermediate products available from the refinery and some
additives in order to adjust the product specifications.

Answer 5

product blending

Question 6

is the lowest temperature at which vapors arises from oil
ignites*. It indicates the maximum temperature at which a fuel can be
stored without serious hazard.

Answer 6

flash point

Question 7

is the lowest temperature at which oil can be stored and
still capable of flowing or pouring, when it is cooled without stirring under
standard cooling conditions.

Answer 7

pour point

Question 8

is the lowest temperature at which oil becomes cloudy
and the first particles of wax crystals are observed as the oil is cooled
gradually under standard conditions.

Answer 8

cloud point

Question 9

indicates the degree of aromaticity of a petroleum
fraction. It is the minimum temperature at which equal volumes of the
aniline and the oil are completely miscible.

Answer 9

aniline point

Question 10

the maximum flame height in millimeter at which the
oil burns **without smoking **when tested at standard specified conditions.

Answer 10

The smoke point

Question 11

process combines propenes and butenes to produce higher
olefins with high-octane numbers for the gasoline pool.

Answer 11

The polymerization

Question 12

process combines light iso-paraffins, most commonly isobutane,
with C3–C4 olefins, to produce a mixture of higher molecular weight iso-paraffins as
a high-octane number blending component for the gasoline pool.

Answer 12

The alkylation

Question 13

The main purpose of __________________ is to find the best way of mixing
different intermediate products available from the refinery and some
additives in order to adjust the product specifications.

Answer 13

product blending