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20130416 NL GUTS Presentations Centrifugal Separation

Last updated 596 days ago by Albert Verver

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Group of Users of Technology for Separation in the Netherlands


 

CENTRIFUGAL SEPARATION   16 APRIL 2013

 

20130416 SmurfitKappa - Mr. Tim Snijckers – Separation scan outcome and experience

SmurfitKappa Roermond produces 565.000 ton recycled paper from 600.000 ton recovered paper. Processing recovered paper brings starch compounds into circulating process water. Microbial activity converts starch into lower fatty acids leading to problems in the paper making process, water treatment and smell. A team of experts from ECN and Paques have made a brief but in depth analysis of the occurrence and features of these fatty acids in the process. They developed three scenarios (Starch; Acids; Nutrients) to handle the process causes to reduce the problem as well as to recover the fatty acids for value. (sludge return scheme, nanofiltration and electrodialysis) The team suggested a new cost approach.

The Separation scan was initiated by NL GUTS member KCPK bringing together the paper mills of ESKA, SCA and SmurfitKappa with similar raw materials, processes and problems.

The separation scan with experts from outside the paper sector was unbiased, brought new insights, gave focus to existing ideas and helped prioritizing outcomes. SmurfitKappa is currently implementing one of the suggestions www.smurfitkappa-roermondpapier.com

 

20130416 Wageningen University (WUR) – Mr. Thomas Krebs (currently FMC) - Coalescence and compression in centrifuged emulsions studied with in situ optical microscopy

WUR, TU Delft, UTwente, FMC, Frames, Shell and Wintershall joined forces in an ISPT project to develop an in-line swirl technology making use of flow velocity only to generate centrifugal forces to separate water and oil in water streams from oil and gas recovery. WUR developed an optical method to study the oil droplet formation and coalescence under these centrifugal forces in monolayers, overcoming the turbidity hindrance. Emulsion compression, drop formation and coalescence are well visible and relations between drop formation and osmotic pressure were established; drop forms and compression; emulsion density and degree of compression, including the impact of g-force level. Drop – drop coalescence is much slower than drop – oil phase coalescence. The method is also applicable to study foam stability. Application extends to mechanical separators and mechanical settlers. www.wur.nl

 

20130416 Evodos - Mr. Hen Boele and Mr. Herre Hoekstra – Principle and functioning of Evodos centrifuge and NL GUTS Technoproject results: Digestate Separation with Spiral Plate Technology

Evodos is a Dutch SME that developed and owns the spiral plate technology for centrifugal L/L and S/L separation without PE chemicals at low 300 G and with minimum power. Conditions are gentle, no pressure, minimum temperature rise (<0,2°C), noise and vibration. The units are automated and require minimum skills. The Technoproject participants are NL GUTS members VION and Bio-Energie Herk. The project focused at further solids separation from decanter centrate, dewatering digestate and at maximizing phosphate recovery from digestate sludge cake. Further solids separation goes well, however the very low solids in the inlet resulted in a wetter cake than normal. Savings on flocculants are balanced by higher drying cost. Recovery of phosphate was 60% without chemicals while target is higher. Conclusion is that technically it is promising. Further development is needed to arrive at a good business case. The new high capacity machine helps reducing capital cost. www.evodos.eu

 

20130416 Flowid/Spinid – Mr. Wessel Hengeveld - Intensified centrifugal liquid liquid extraction and separation with Spinning Disc

Spinid, as sister company of Flowid, markets and sells products on basis of the spinning disc technology developed by Technical University Eindhoven. Flowid sells services in the same field and in innovative process engineering. Both are SME. The Spinning disc extractor has a rotating disc and a rotating house, while the reactor has a static house. The rotating house enables the separation of liquids that have been mixed previously. Thanks to the narrow disc channels and the small droplet sizes the extraction process is extremely fast. The rotating house uncouples control of the separation step. Comparison with four types of current centrifugal extractors claims a tenfold capacity per footprint at comparable power uptake. Water/heptane was tested. This technology is so new that capacity boundaries were not determined yet. Capacities of around 200 litre/hour are certainly possible with the smallest type. www.spinid.nl

 


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Visit the NL GUTS website www.processinnovation.nl/nlguts
For more information about NL GUTS please contact:
Jan Koning (chairman NL GUTS)
tel +32 473 976 135 - koning@trionpartners.nl
Bart Manders  (contact at RVO)
tel +31(0)88 602 2329 - bart.manders@rvo.nl


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