pm 3.5(4.5)

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

• P-801A/B

• R-801A/B

• R-802A/B

• P-802A/B

Where goes the paraxylene after the process in C-604

• Column 606

• Section 700

• None of them

• Consumers

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

• Extract: Mixture of paraxylene and raffinate

  Raffinate: Mixture of aromatic hydrocarbons C8+ and desorbent

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

  Raffinate: Mixture of aromatic hydrocarbons C8+ and diethylbenzene

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

  Raffinate: Mixture of aromatic hydrocarbons C8+ and desorbent

• Extract: Mixture of paraxylene and toluene

  Raffinate: Mixture of aromatic hydrocarbons C8+ and desorbent

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

• To separate paraxylene from raffinate

• To separate desorbent (paradiethylbenzene) from raffinate

• To separate paraxylene from desorbent (paradiethylbenzene)

• To separate paraxylene from toluene

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

• To separate toluene from desorbent (paradiethylbenzene)

• To separate paraxylene from desorbent (paradiethylbenzene)

• To separate paraxylene from raffinate

• To separate high-purity paraxylene and toluene

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

• To separate xylenes from paraxylene

• To separate xylenes from toluene

• To separate xylenes from desorbent (diethylbenzene)

• To separate desorbent (diethylbenzene) from raffinate

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

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

• to obtain raffinate and extract

• get toluene from xylene C-601 recycle column

• to get the end products

What is the raw material in Prefractionation?

• heavy reformate, C8+, recycle stream

• extract and raffinate

• C9+, raffinate

• toluene, heavy reformate

What are clay treatment apparatuses needed for?

• removing traces of olefins from heavy

  reformate

• removal of mechanical waste

• removal of traces of olefins from C8+

• removal of clay from heavy reformate

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

• C9+

• C8+

• toluene

• raffinate