Adaptive Fuel Line - Alfa Laval · conditions of cat fines in HFO (380 cSt and 700 cSt) If you can...

www.alfalaval.com/marine© Alfa Laval

How to handle 2020 fuels on board?

Andrzej SmolenskiBU Marine Separation

Adaptive Fuel Line


Onboard Fuel Oil Cleaning, the Ever Neglected Process.

How to Restrain increasing Cat Fine Damage in

Onboard Fuel Oil Cleaning, the Ever Neglected Process. How to Restrain increasing Cat Fine Damage in Two-stroke Engines

0

10000

20000

30000

40000

50000

60000

70000

1 2 3 4 5 6 7

Cat

fin

es b

y n

um

ber

0-5 15-2010-155-10 >3

0

25-3020-25 Cat fines size (µm)

Seize of Embedded Cat Fines in liners:

• Most Cat Fines by number were found in the

range of 5 – 15 μm

• Since the oil film thickness between engine

parts goes down towards 1 μm, also

small Cat Fines contribute to wear

• Therefore, increased Separation Efficiency

and regular efficiency monitoring is necessary

Source: MAN D&T


Certified Flow Rate (CFR)Separator performance validation

• Certified Flow Rate is defined as the flow

rate where the separation efficiency is

85%, 30 minutes after a discharge

• Test method uses Dino-spherical 5 µm

particles in synthetic oil to simulate

conditions of cat fines in HFO (380 cSt

and 700 cSt)

If you can separate

this particle

…you can also separate

this one

• It is proven and repeatable method to

evaluate and optimize separator

performance adopted by European

Committee for Standardization


Project Guide


CFR range of S9x8 separators

CFR is to provide customers a fair and objective way of comparing separators from different suppliers

Work initiated in CEN/TC 313 and CIMAC WG7 (Fuels) to develop a new CFR test standard, also taking care of 2020 fuels


LP

HP

Particle flow pattern

Multiphase flow pattern

Pressure drop

Re-mixingFlow direction

Up

Down

Understandings the disc stack

Poorly design separator will not maintain good efficiency for the period


Inside separator bowl

Liquid levels what determain interface between

Oil and Water

• Level of water

• Level of clean oil

• Level of dirty oil

In conventional purifier the correct size of

Gravity Disc is essential for efficient

separation

Gravity Disc


S – separator ALCAP type

ALCAP-short-version_JAP-subs.mp4


S – separator ALCAP type


ALCAP - adaptive separator


OPEX


S – separator minimized wear and tear

Slide 12

Centri Lock

Cetri Shoot


PI

PS

PI PI

Mt50

System control


• Complet system with heater, pump and

ancillaries

• Fast and easy installation

• Flexible configuration

• Fixed foot print and connections

• Tested at factory

Plug & Play installation

Standard Modules

flex_range_071126_01.wmv


A conventional fuel system

Recirculation

Fuel feed to separator is independent from engine load

Large portion of oil recirculates during slow steaming

Recirculation adds to energy costs

The high flow rate leads to less efficient separation and an increased risk

of engine damage


One Separator – Slow Steaming

Slide 16


FlowSync

FlowSync is automatic feed pump control system

It adjusts the flow to separators to actual fuel consuption


100% of design flow rate

Separation efficiency v/s flow


By reducing the flow rate, the separation efficiency increases

50% of design flow rate

Separation efficiency v/s flow

FT

Flow Transmitter

Controller

Pump

Rate

Engine

Load

www.alfalaval.com/marine

Multiple separators – One controller

FlowSync – Operating Principle

../FlowMate/FlowMate graphics.pdf


One Separator – with FlowSync

Slide 21


Feed

pumps

Pre-

heater

VFD AL

control

Developing the future

- Increased separation performance

- Reduced energy consumption

- On-line measurement


SummaryAlfa Laval Separation, link to 2020 Fuels

CFR certified HSS

FlowSync to optimize performance

Superior bowl design

ALCAP System to handle viscosity variations

Slide 23

Cat Fine

Issues

Engine Protection

More fuel

variations

Fuel Flexibility


Alfa Laval Adaptive Fuel Line– be a step ahead

Thank you for attention

Adaptive Fuel Line - Alfa Laval · conditions of cat fines in HFO (380 cSt and 700 cSt) If you can...

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