1 Fuel Oil Handling Handout

8/8/2019 1 Fuel Oil Handling Handout

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HANDLING of

FUELS

Marine & Diesel application

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HANDLING of FUELS

Storage

tank Separation

system booster


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Atmospheric

distillation

Distillates

Vacuum

distillation

Vacuum residue Visbreaker

FCC

(Fluid

Catalytic

cracking)

HCO

Visbreaker bottom

R

ESIDUES

DISTILL ATES

Refinery process with residue desulphurisation¹

HDS

H2

H2S

1. ENSPM Formation Industrie 2002

3.1% S

4.2% S

Distillate components

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ISO 8217. 2005


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ISO 8217 limit:

Max 80 ppm Al + Si

Recommendation:

Max 15 ppm Al + Si

Installation efficiency!

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LSHFO arrangement


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Oil from separator

Overflow from service tank

High Level alarm switch

Low level alarm switch

Steam controller with P type controller

Suction for Booster pumps

Suction for Boliler

Drain

Venting from tank

Start/ Stop transfer pump

From bunker tanks

Settling tank design

Sloping bottom

High and low level alarm switches

Automatic ref il l v ia t ransfer pump

Drain valve (self closing)

HANDLING of FUELS

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Oil from separator

Owerflow to setlingtank

High Level alarm switch

Low level alarm switch

Steam controller with P type controller

Suction for Booster pumps

Suction for Boliler

Drain

Venting from tank

Service tank design• Sloping bottom

• Low level alarm switch.• Drain valve (self closing)

HANDLING of FUELS


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HANDLING of FUELS

Single settling tank - Single service tank arrangement

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HANDLING of FUELS

Single settling tank - Double service tank arrangement


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HANDLING of FUELS

Double settling tank - Double service tank arrangement

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IMO Part C – Machinery installations (extract)

– Regulation 26 – General

11 Location and arrangement of vent pipes for fuel oil service, settling

and lubrication oil tanks shall be such that in the event of a brokenvent pipe this shall not directly lead to the risk of ingress of seawater

splashes or rainwater. Two fuel oil service tanks for each type of fuel

used on board necessary for propulsion and vital systems or

equivalent arrangements shall be provided on each new ship, with a

capacity of at least 8 h at maximum continuous rating of the

propulsion plant and normal operating load at sea of the generator

plant.* This paragraph applies only to ships constructed on or after 1

July 1998.

HANDLING of FUELS


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– SUMMARY

– Settling Tank arrangement

General about mixing of fuels. Great care must be taken in order not to mix

different fuels in any tanks. Incompatibility problems may occur that creates

the formation of precipitated asphaltenes forming high viscous sludge. This

sludge may block any strainers, heaters, separators and filters in the entire

fuel system.

In order to provide a fuel handling that minimise the risk of mixing two fuels

of different origin, two settling tanks should be provided. These tanks should

be used alternatively in order to utilise a better settling and stabilising the oil

temperature before being treated by separators.

When only one settling tank is provided, great care must be taken when

changing from one bunker type to another. The tank must be emptied to a

low level before the “new” bunker is transferred into the tank.

By doing this is the risk of mixing two fuels of different origin is minimised.

Cleaning of the settling tank(s) should be done at least once a year

HANDLING of FUELS

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– SUMMARY continued

–Service Tank arrangement:

In order to provide a fuel handling that minimise

the risk of mixing two fuels of different origin, two

service tanks should be provided. These tanks

should be used alternatively in order to avoid

mixing of two fuels of different origin at a high

temperature. Cleaning of the service tank(s)

should be done at least once a year.

HANDLING of FUELS


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BRIEF SUMMARY

– 2 SETTLING TANKS

– 2 SERVICE TANKS

- SEPARATION SYSTEM, DETAILED DESIGN CRITERIA

- Separator capacities considered equal to CFR,

Certified Flow Rate for the viscosity class in question.

HANDLING of FUELS

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HANDLING of FUELS

Pump configuration


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ACP 32


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Constant flow configuration

HANDLING of FUELS

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PI

PI PI

PI

HANDLING of FUELS

Pre-heater configuration


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M3

Steam/ thermal heaters

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CBM

Steam/ thermal heaters


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• Cleans the heaterwithout dismantling.

• Less work.

• Less wear on theparts on the heater.

• Increased efficiency.

• Once a year forHFO.

• Every 6 mnd for LO.

C I P

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Maintenance:

Manual cleaning w ith high-pressure

washer or soft brush.

Once a year for HFO and every 2

times a year for LO.

Electrical heater


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UNTREATED

FUEL

TREATED

FUEL

HANDLING of FUELS

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HANDLING of FUELS

MOPX configuration


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HANDLING of FUELS

FOPX configuration

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HANDLING of FUELS

LOPX configuration


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HANDLING of FUELS

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HANDLING of FUELS


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Booster system.

Atmospheric system.

Venting pipe

Venting pipe

Regulating

valve

Automatic

filter

PT : Pressure transmitter

VT : Viscosity transmitter

TT : Temperature transmitter

Circulating pumps Heaters

Mixing tube

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Booster system.

Pressurized system.

Automatic filter

FT: Flow transmitter

Supply pumps

PT : Pressure transmitter

VT : Viscosity transmitter

TT : Temperature transmitter

PDS: Pressure difference sensor

LS: Level switch

Return from engine

Return from mixing tube

Regulating

valve

Regulating

valve


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LO system


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Homogenizer

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Homogenizer


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ISO 8217. 2005

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Homogenizer

1 Fuel Oil Handling Handout

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