Alfa Laval ”Harvester” on Algae processing - Pole IAR

www.alfalaval.com

www.alfalaval.com17/06/2020 | © Alfa Laval 2 |

Des technologies de séparation bleueau service des procédés de la bioéconomie bleue

www.alfalaval.com

Detlef AHRENS

Team Leader Renewable Resources

Industrial Fermentation & Algae Manager

| © Alfa Laval

3 |

17/06/2020

Aurélie DUPUY

Membranes Marketing

Product Management

Alain MOLINA

BD Industrial Fermentation

Biotech-Pharma FR Market

Alfa Laval ”Harvester” on Algae processing

Separation, concentration for purification of algae extract


Table of Contents

1. Algae and technology link

2. Centrifugation concept and application

3. Filtration : approach and success stories

www.alfalaval.com| © Alfa Laval 5 |17/06/2020

Efficient separation of liquids from liquids, of particles from liquids and of fluids and solids from gases

Products:

• High speed separators

• Decanters

• Membrane filtration

Key technologies− Separation


Why Alfal Laval

• Centrifugation creator

• 137 years of know-how and innovation centrifugation

• European Membranes Producer

• 65 years of know-how and innovation on Membranes

www.alfalaval.com| © Alfa Laval 7 |17/06/2020

“We exist to accelerate success for our customers, people and planet”

Our purpose− Advancing better™

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Presentation for IAR

Detlef Ahrens

Team Leader Renewable Resources

Business Unit High Speed Separators

Alfa Laval Tumba AB

Sweden

17/06/2020 | © Alfa Laval 8 |

Algae Harvesting with Disc Stack Centrifuges

Plongez au cœur de l’innovation &

des marchés


Table of Contents

1. Algae Harvesting Technologies

2. Operating Envelope of Disc Stack Centrifuges

3. Theory

4. Types of Disc Stack Centrifuges

5. Flexibility

6. Product portfolio

7. Summary

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Algae Harvesting Technologies

• Sedimentation

• Membrane Filtration

• Centrifugation

• Flocculation

• Flotation

• Solvent extraction

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www.alfalaval.com

Operating Envelope of Disc Stack Centrifuges

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www.alfalaval.com© Alfa LavalSlide 12

Separation theory

Tank being filled


Separation theory

Settling distances for particles

Hh

H = Long settling distance h = Short settling distance


Separation theory

Tank with separation plates


Separation theory



Separation theory

Cleaned liquid



Separation theory

Imagine the tank in an upright position


Separation theory

which then is rotating

Caulk(s) 0,5 mm

0,5 mm

FLOW

>2500 G

Disc stack

S

s

>2500 G

0,5 mm

FLOW

C-force

SOLID


Separation theory

Caulk(s) 0,4 - 0,8 mm

0,5 mm

FLOW

>2500 G

SOLID

Disc stack

To Bowlperiphery

S

s

C-force

SOLIDS PATH

Flow between discs

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Separation by DensityDifference

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Bowl configurations− Assure flexibility to adapt to different process conditions

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Solid bowl Intermittent Continuous

0.5% feed solids 0.5-10% feed solids 5-35% feed solids

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Most common bowl configurations− Assure flexibility to adapt to different process conditions

17/06/2020 | © Alfa Laval 22 |

www.alfalaval.com

Disc stack separators can handle most algae strains

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• Cell size varies from approx 2 µm up to 40-50 µm.

• Most common is intracellular lipids, but some strains produce extracellular oil.

• Different reactor kinetics. Some fast growing strains produce less oil.

• PCV (Packed Cell Volumes) can vary from 0,1% to >20% depending on strain and fermentor type.

• GMO (Genetically Modified Organism) coming.

www.alfalaval.com

Clara 20, Clara 200 standard modules

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0,4 - 4 m3/h 3,5 – 25 m3/h

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Alfa Laval and algae separation

• More than 40 years experience

• All bowl configurations

• 0,15 to 150 m3/h

• Materials for both sea and sweet water applications

• Test pool

17/06/2020 | © Alfa Laval 25 |

www.alfalaval.com

References

• More than hundred worldwide

• Mainly chlorella sweet water applications but also salt water

• 35 units in Taiwan

• 46 units in Japan

• 15 in India

• Australia, Brazil, Czech Rep, Hungary, Malaysia, Spain, USA

17/06/2020 | © Alfa Laval 26 |

www.alfalaval.com

Product Portfolio− Intermittently solids discharging centrifuges

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Feed range(m3/h)

Chlorideresistance

Comments

Clara 20 (skid) 0,4 – 4 Average Pilot scale

Clara 80 (skid) 2 – 8 Average

Clara 200 (skid) 3,5 – 25 Poor For high solids, soft water

Clara 250 (skid) 6 – 25 Average

SP 200 (skid) 4 – 13 Good

BRPX 714 13 – 40 Average

Clara 601 12 – 90 Poor

Clara 701 25 – 75 Poor Large scale, high performance

SP 700 25 – 85 Good Like Clara 701, for sea water

www.alfalaval.com

Product Portfolio− Nozzle centrifuges

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Feed range(m3/h)

Chlorideresistance

Comments

DX 203 0,15 - 1 Average

FESX 610 5 - 50 Average

FEUX 510 6 – 50 Good*

FESX 712 4 – 130 Average

FEUX 512 6 – 80 Good*

FEUX 214 10 – 90 Good*

FESX 217 10 – 150 Average

FEUX 420 15 - 140 Good*

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Summary

• Disc stack centrifuges are very flexible (0.1 to 20 vol-% feed, 0.2 to 1000 µm size)

• Extremely effective (large G, large settling area)

• Different bowl types to adapt to application

• Large variety of models, 0,5 to 150 m3/h

• Test pool

17/06/2020 | © Alfa Laval 29 |

www.alfalaval.com

Membrane Technology in the microalgae processing

Concentration & purification of algae extract

Aurélie DUPUY

Membranes Marketing & Product Management

| © Alfa Laval 30 |17/06/2020

www.alfalaval.com

Introduction - Alfa Laval Nakskov A/S, Denmark− Est. 1965 > 50 years of experience in Membrane Production

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• In-house Membrane Production

• Dedicated R&D Department

• Plate & Frame, Spiral and MBR Production

• On site E&S Group for system supply

• Customer Support and Service department

• Separation Test and Application Centre


Product Overview− Our membrane package

Bulk Membrane ModulesComponents Membrane Filtration Systems> 2000 installed worldwide

Test Units

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What is membrane filtration?− Definitions

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• Membrane filtration is a physical separation process and the driving force is the pressure difference across the membrane.

• It is characterised by the ability to separate molecules of varying sizes and characteristics by using different membrane types.

• Cross-flow filtration benefits

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• Algae type: spirulina

• Algae extract as natural color (phycocyanin) for use in the

food industry

• 2 membrane stages for concentration and purification

• Ultrafiltration with the newly developed Alfa Laval GR

membranes (5&10 kDa)

− Membrane process description

Case study – algae extract

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www.alfalaval.com

− Process description


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UF stage 1 UF stage 2

VCF 5-6 4

Diafiltration No Yes

Concentration of algae extract

Purification of algae extract

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• Sanitary design

• Automatic plants

• 2-line process for flexibility

• Batch / Semi-batch operation

• Spiral-wound configuration

• Total membrane area = 420 m2

− Plant design


17/06/2020 | © Alfa Laval 36 |


From Lab to Production Scale− Alfa Laval Process Development Support

Lab R&D Design Confirmation / Semi productionPilot Scale Development Production plant supply

• Test equipment

Test Centre

Rental plants

• Test equipment

Test Centre

Rental plants

• Test equipment

Test Centre

Rental plants

• Design

• Quotation

• Engineering

• Supply


Applications− The importance of test work

• Define

Selection of optimum membrane

Most cost effective system configuration

Design data for production plant

• Optimise

Production plant performance

CIP cleaning protocols

Utilities consumption/ cost

• Identify

Feed stock variability affect

Performance stability

Long term fouling/ cleanability risk

Alfa Laval Test Centre

Customer Site

www.alfalaval.com

Alfa Laval ”Harvester” on Algae processing - Pole IAR

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