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EMbaffle® TechnologyNLAHX, The Hague, June 29, 2007

By Stuart Oakley, Eric van der Zijden

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Introduction to EMbaffle® Technology

� A Shell developed technology initially for shell & tube heat exchangers

to reduce fouling mechanisms

� Tubes supported by expanded metal baffles

� The fluid flows parallel to the tubes, through the grid openings

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Characteristics of EMbaffle® Technology

All heat exchangers

� Uniform longitudinal flow shell-side

� 3-Dimensional shape of expanded

metal enhances the heat transfer

� Countercurrent flow

� Increased heat transfer (OHTC)

� Available in commercially available

software (HTRI)

� Utilises TEMA tolerances and applicable recommendations

� Physically identical to segmental Shell&Tube heat exchanger, no

pressure part modification

Fouling services

� No stagnant zones, no (solid) fouling build-up

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Expanded Metal & Material Options

Expanded metal

� Widely applied (low end applications)

� Easy to produce with excellent dimensional repeatability

� No waste material during production

� Relatively stiff

� Large variations in dimensions possible

Typical materials available (but not limited):

� Stainless Steel – 304, 316, 321 + more

� Duplex SS (SAF2205), Super Duplex (SAF 2507),

� Copper, Copper Alloys, CuNi, Bronze, Brass

� Aluminum, Titanium

� Hastelloy, Inconel, Incoloy, Monel,

� Carbon Steel

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EMbaffle® Bundle Cage Under Fabrication

Photo courtesy of Bronswerk Heat Transfer BV

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EMbaffle® Field Test

Goals of the Field test:

� Fouling reduction

� Show initial high performance

� Replacement bundle (old bundle out /new in)

� Show reliability of the technology

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EMbaffle® bundle being hydro-jet cleaned

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EMbaffle® bundle after being hydro-jet cleaned

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Inspection of the EMbaffle® bundle

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Results EMbaffle® field test

� Gross Energy saving of EMbaffle HE: 60 TeraJoule per year (113 k€/yr)

� Gross CO2

reduction of EMbaffle HE: 4 kt CO2 per year (86 k€/yr)

� OHTC: Initial: 8% higher than segmental

After 14 months: 36% higher than segmental

� Duty: Initial: same duty (with 18 % less surface area)

After 14 months: 32 % higher duty

� Pressure drop: 20 % lower

� Rate of fouling: Halved

� Optimum operation time without cleaning: Doubled

� Condition assessment after 17 month: no defects

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EMbaffle® Application Status

Fabrication, Operation:

� 8 EMbaffle® HEX bundles - Refining Crude Units

� 7 EMbaffle® Gas/Gas HEX’s - Exploration Gas Separation Unit

� 2 EMbaffle® HEX - Platformate coolers

� 1 Hybrid EMbaffle® HEX bundle - Chemicals Ovhd Condenser

Under design:

� 8 EMbaffle® HEX bundles - Refining Crude Units

� 1 EMbaffle® HEX - Ovhd Condenser

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Contacts

� Stuart Oakley - CEO

� Eric van der Zijden - Senior Project Engineer

� George Anderson - Business Development Manager

EMbaffle B.V.

Coengebouw, 7th Floor, Kabelweg 37,

1014 BA Amsterdam, The Netherlands

Tel. +31 20 586 0020

Fax. +31 20 586 0039

Email: info@EMbaffle.com

Web: www.EMbaffle.com

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