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20141125 NL GUTS Presentations Crystallisation

Last updated 989 days ago by Albert Verver

Group of Users of Technology for Separation in the Netherlands




20141125 Wageningen UR - Mr. Koen Meesters –“Improved sugar recovery by Anti-solvent Crystallisation”

Anti-solvent crystallization is when a compound is dissolved in a liquid (the solvent) and adding a second liquid causes the compound to crystallize by reducing its solubility. For beet sugar water is the solvent and several organic anti-solvents were tested. The advantages are abandoning carbonation with energy intensive lime, lower power and heat cost, higher sugar recovery and no centrifugation of crystals needed. The safety requirements, need and cost to recover anti-solvents even at small scale production capacity make this process considerably cheaper overall. The new anti-solvent crystallization process with its features was explained with small scale experimental results. Pilot facility is planned. http://www.wageningenur.nl/nl/Expertises-Dienstverlening/Onderzoeksinstituten/food-biobased-research.htm


20141125 Procédé Group B.V.– Mr. Sjaak van Loo - “Mineralisation in a scrubber”; Twence – Andy Roeloffzen & Bouman Systems B.V. – Mr. Ewald Koster – “Flue gas scrubbing and Flue gas treatment with the same compound”

Two SME’s Procédé and Bouman cooperated with Twence to develop a CO2 capture method that produces sodium-bicarbonate SBC. The same SBC in its turn is used to capture CO2 from Municipal Solid Waste Combustion instead of using sodium carbonate. The development of the technology, the piloting, the demo, the full scale unit and the results were explained, including a new system to inject SBC slurry in the flue gas. The slurry replaces dry SBC, savings in SBC, no temperature drop in flue gas, 100% conversion of CO2 captured, > 95% carbonate conversion. Major equipment savings accomplished.
www.procede.nl  – www.twence.nlwww.bouman.nl


20141125 Wendelin B.V. – Mr. Sieb Doorn – “Phase changing materials for Separation”

PCM’s are applied for reversible heat storage and release by physical changes. This is now extended to Thermal Chemical Material TCM, a mixture of a salt and Aramid fiber as carrier, making use of the exothermal chemical reaction heat between components. For instance H2S capture with EDTA and FeCl3, or CO2 via ZnO and recovery by heating (waste heat) Reaction heat storage capacity is about ten times that of phase changing, which may make TCM of interest for process industry. www.wendelin-group.com


20141125 TU Delft – Mrs. Marloes Reus – “Electrospray Crystallisation”

Suppose a salt solution leaves a nozzle as small droplets entering an electrical field forming an aerosol of micron-sized droplets, that evaporate ending up as sub-micron crystalline particles. The jet depends on the field force and determines the product features. Advantages are better shape control, narrow size distribution, less defects and inclusions, higher solution rate, better bio-availability than crystals from cooling. Experimental set-up, conditions and results were presented. for Niflumic acid, iso-nicotinamide, Caffeine, RDX and TNT. www.tudelft.nl  www.3me.tudelft.nl/biwic2011


20141125 AkzoNobel – Mr. Jan Meijer – “mTA Crystallisation”

AkzoNobel developed a new anti-caking agent Fe-mesoTartrate complex or mTA for salt (NaCl) use, transport, storage and the Chlor-alkali process, to replace Fe(CN)64- patented by AkzoNobel half a century ago and the current standard worldwide. Fe(CN)6 disturbs the crystal grid of NaCl, so it keeps salt flowing. However it also causes some iron-hydroxide deposits in electrolysis cells and may form some NCl3, resulting in extra power consumption. mTA neither disturbs the process, which saves power, maintenance and membrane/electrode replacement, nor has it other drawbacks. Today more than 15 million ton of salt has been produced with mTA. To produce mTA AkzoNobel developed a new process to selectively crystallise mTA form a racemic mixture. It has been fully commercialised. www.akzonobel.com


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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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