Revamps 2022 Issue

Vac. slope oil from P-24 A/B (Fig. 4)

Note: (1) Two trains in parallel. The exchanger shells shown are for both trains.

Jet product from P-16A/B (Fig. 3) Naphtha PA return to atm. column (Fig. 3)

Raw crude

Note 1

P-10 A/B

Jet product

Heavy diesel product from E-25 (Fig. 2 & 6)

E-10 A/B

E-31

Jet PA return to atm. column (Fig. 3)

Naphtha PA from P-15 A/B (Fig. 3) Jet PA from P-17 A/B (Fig. 3)

HGVO product from E-24 (Fig. 2 & 6)

E-11 A/B

MVGO PA return to vac. column (Fig. 4)

E-12 A/B

MVGO PA from E-19 A/B (Fig. 2 & 6)

Med. diesel product Vac. bottoms product

Heavy diesel product

E-13 A/B

E-33

E-15 A/B

Desalted crude to preash drum (Fig. 2 & 6)

E-32

E-18 A/B

E-16 A/B

E-17 A-F

Note 1

E-14 A/B

HVGO product

Med. diesel product from P-18 A/B (Fig. 3)

Desalter stage 2

Desalter stage 1

VTB from E-26 A-D (Fig. 2 & 6)

Disposal water

P-11 A/B

E-28 A-C

Sour water from P-25 A/B (Fig. 4)

Figure 1 Raw crude and desalted crude preheat

HAGO PA return to atm. col. (Fig. 3) HAGO prod. from P-21 A/B (Fig. 3)

Vapour to atm. column (Fig. 3)

Preash drum

Crude bypass export

E-23

VTB from P-29 A/B (Fig. 4)

Desalted crude from E-18 A/B (Fig. 1)

E-19 A/B

E-21 A/B

ATB bypass from P-23 A/B (Fig. 3)

E-26 A-D

Atmospheric heater

E-22

E-27 A/B

E-24

E-20 A/B

MVGO product

P-12 A/B

Flashed crude to atm. column (Fig. 3) Cooled ATB bypass export

MVGO PA to E-16 A/B (Fig. 1)

E-25

E-30

HAGO product

HVGO product from P-28 A/B (Fig. 4) Heavy diesel product from P-20 A/B (Fig. 3) HAGO PA from P-22 A/B (Fig. 3) MVGO product + PA from P-27 A/B (Fig. 4) Med. diesel PA from P-19 A/B (Fig. 3) VTB quench to vac. column (Fig. 4)

Hvy. diesel product to E-15 A/B (Fig. 1)

HVGO prod. to E-14 A/B (Fig. 1)

Med. diesel PA return to atm. (Fig. 3)

VTB to E-17 A-F (Fig. 1)

Figure 2 Flashed crude preheat and ATB bypass

shell and tube side of an exchanger is a measure of addi- tional resistance to heat transfer caused by deposits, which may include fouling and a corrosion layer on the tube sur- face. This resistance depends on the type of fluid, presence of particulates/contaminants, heat transfer surface mate - rial, temperature, flow velocities, and the operating period between successive cleaning actions. The design fouling factor provides excess area to enable the heat exchanger

new exchanger in the flashed crude train, establishing the performance of the entire crude preheat train under the fouled conditions and benchmarking the unit are essential. This required evaluating exchanger performance under the design fouling and actual fouling during the unit run length. Exchanger fouling The fouling factor applied during the design phase to the

Revamps 2022