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1.

What pump is used for spraying the light raffinate into the C-801 column?

a)

P-801A/B

b)

R-801A/B

c)

R-802A/B

d)

P-802A/B

2.

Where goes the paraxylene after the process in C-604

a)

Column 606

b)

Section 700

c)

None of them

d)

Consumers

3.

Which of the following best describes the products of the C-602 A/B adsorber unit?

a)

Extract: Mixture of paraxylene and raffinate

Raffinate: Mixture of aromatic hydrocarbons C8+ and desorbent

b)

Extract: Mixture of paraxylene and desorbent (para-diethylbenzene)

Raffinate: Mixture of aromatic hydrocarbons C8+ and diethylbenzene

c)

Extract: Mixture of paraxylene and desorbent (para-diethylbenzene)

Raffinate: Mixture of aromatic hydrocarbons C8+ and desorbent

d)

Extract: Mixture of paraxylene and toluene

Raffinate: Mixture of aromatic hydrocarbons C8+ and desorbent

4.

What is the main purpose of the C-603 extract column?

a)

To separate paraxylene from raffinate

b)

To separate desorbent (paradiethylbenzene) from raffinate

c)

To separate paraxylene from desorbent (paradiethylbenzene)

d)

To separate paraxylene from toluene

5.

What is the primary objective of the C-604 paraxylene concentration column?

a)

To separate toluene from desorbent (paradiethylbenzene)

b)

To separate paraxylene from desorbent (paradiethylbenzene)

c)

To separate paraxylene from raffinate

d)

To separate high-purity paraxylene and toluene

6.

What is the primary purpose of the C-605 raffinate column?

a)

To separate xylenes from paraxylene

b)

To separate xylenes from toluene

c)

To separate xylenes from desorbent (diethylbenzene)

d)

To separate desorbent (diethylbenzene) from raffinate

7.

What is the purpose of Prefractionation in section 600 " Eluxy| "

a)

to separate the raw material into two fractions before and after C9

b)

to obtain raffinate and extract

c)

get toluene from xylene C-601 recycle column

d)

to get the end products

8.

What is the raw material in Prefractionation?

a)

heavy reformate, C8+, recycle stream

b)

extract and raffinate

c)

C9+, raffinate

d)

toluene, heavy reformate

9.

What are clay treatment apparatuses needed for?

a)

removing traces of olefins from heavy

reformate

b)

removal of mechanical waste

c)

removal of traces of olefins from C8+

d)

removal of clay from heavy reformate

10.

Which product is sent to section 700 from the C-601 xylene recycling column?

a)

C9+

b)

C8+

c)

toluene

d)

raffinate

11.

How many inputs and outputs come in and out of the adsorbers?

a)

3 inputs, 2 outputs

b)

1 inputs, 2 outputs

c)

3 inputs, 1 output

d)

2 inputs, 2 outputs

12.

What are the outputs of adsorbers?

a)

extract, raffinate

b)

toluene, benzene

c)

paraxylene, raffinate

d)

extract, xylene

13.

For what the raffinate column is designed?

a)

To separate toluene and benzene

b)

To separate paraxylene from desorbent

c)

To separate xylenes from desorbent

d)

To separate heavy aromatic hydrocarbons

14.

What product is sent to Section 650 from raffinate column C-605?

a)

Xylene mixtures

b)

Toluene

c)

Heavy aromatic hydrocarbons

d)

Benzene

15.

What is the composition of extract?

a)

raw benzene

b)

mixture of paraxylene and desorbent

c)

mixture of xylenes

d)

mixture of aromatic hydrocarbons C8+ and desorbent

16.

Why there is a supply of nitrogen to the tanks and separators?

a)

To regenerate the catalyst.

b)

To increase the productivity.

c)

To speed up a flow rate.

d)

To maintain the pressure and prevent the accumulation of light hydrocarbon vapors.

17.

What kind of product is obtained from section 650

a)

Xylene

b)

Paraxylene

c)

Aromatic compounds

d)

Benzene

18.

What products are included in the C-652 stripping column and from which section?

a)

Toluene,section 650

b)

Benzene, section 700

c)

Xylene, section 650

d)

Benzene,section 900

19.

What is the OZH-40?

a)

a special composition of monoethylene glycol, distilled water and the necessary additive package (corrosion inhibitors, antifoam additives).

b)

it is an aromatic compound

c)

a special composition of monoethylene glycol, gas-mixture

d)

No answer

20.

How much output of section 650?

a)

3; section 600, section 900, section 700

b)

2; section 700 and section 800

c)

3; section 600, section 300, section 800

d)

only one; section 300

21.

What is the deheptenization column in the section 650?

a)

Separation of paraxylene from C8+

b)

Isomerization

c)

removal of xylene from paraxylene

d)

No answer

22.

Where do the raw materials for the 800 sections come from?

a)

section 400

b)

section 100

c)

section 300

d)

section 650

23.

What product leaves the column C-801 ?

a)

light and heavy raffinate

b)

benzene and toluene

c)

fractions C8-C9

d)

aromatic hydrocarbons

24.

Till which temperature the refrigerant that enters the installation of RK-901 is cooled?

a)

From 6 to 3 degrees

b)

From 9 to 6 degrees

c)

From 10to 7 degrees

d)

From 8 to 5 degrees

25.

Where is going gas which leaves the tank C-909?

a)

Reservoir tank

b)

Flare system plant

c)

Section 600

d)

Section 100

26.

Where is fuel gas and liquid fuel come from for sections 900?

a)

From factory network

b)

From section 100

c)

From section 400

d)

From reservoir tank

27.

What is the percentage of the minimum capacity of the plant, which maintains the production of products of the required quality?

a)

60% of design capacity

b)

40% of design capacity

c)

80% of design capacity

d)

50% of design capacity

28.

Which product is sent to section 400 from C-702?

a)

heavy aromatic hydrocarbons

b)

Hydrocarbon gases

c)

benzene-toluene mixture

d)

mixture of xylenes

29.

Why is the circulation compressor WASH K-701 supplied to the heat exchanger E-702?

a)

to separate the raffinate

b)

for mixing with raw materials.

c)

to convert a mixture of xylenes into an equilibrium mixture

d)

to activate the catalyst at start-up

30.

What is the main function of additional E-707 condenser?

a)

For the production of high purity paraxylene

b)

To separate a mixture of heavy reformat from the catalytic reforming section

c)

For conversion of toluene and aromatic hydrocarbons

d)

To extract benzene from the blow-off gas

31.

What is the function of the C-701 column?

a)

for stripping light fractions

b)

to separate aromatic compounds C9 and C10 from heavier ones

c)

to separate the product C8+ isomerizate from the C7 fraction

d)

to stabilize the benzene-toluene fractio

32.

What kind of product comes from the section 600 to section 700

a)

heavy aromatics

b)

raffinate

c)

aromatic hydrocarbon

d)

raw material

33.

Circulating gas from the separator D-703 mixed with make-up WASH from section....?

a)

Section 100

b)

Section 250

c)

Section 650

d)

Section 800

34.

Column C-702 designed for?

a)

Separating of toluene from raw material

b)

Stripping light fractions

c)

Stripping aromatic hydrocarbons

d)

Separating of C9 and C10

35.

To which section send the flow of raw benzene from C-702 column?

a)

Section 650

b)

Section 800

c)

Section 600

d)

Section 900

36.

From which section comes toluene to the tank D-701?

a)

400 and 600

b)

600 and 650

c)

650 and 800

d)

100 and 400

pm 3.5(4.5)

Total questions: 36

Worksheet time: 18mins

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