Process Intensification through Coflore Reactors

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Presentation transcript:

Process Intensification through Coflore Reactors Dr Gilda Gasparini Process Intensification 2012 Newcastle upon Thyne 2nd May 2012

AM Technology Based in the UK Founded in 2000 Manufacture chemical reactors Strong focus on innovation

Flow reactors – benefits compared to batch reactors Improved reaction time control Simultaneous feed/discharge/heating/cooling Optimum separation of reactants and products Reactor does not store reacted material Reduced reaction time Higher reactant concentration Higher heat transfer capacity Improved safety for hazardous reactions Improved mixing More extreme temperatures can be employed for shorter periods Orderly flow Improved yields/purity Reduced equipment size/cost Reduced solvent use Increased output flexibility Faster scale up Improved energy efficiency

Multistage for orderly flow Coflore design principle CSTRs in series Increased flexibility Residence time multi phase (G/L, S/L) Low pressure drop cheaper pump Easy scale up Dynamic mixing Multistage for orderly flow

Designing dynamically mixed flow reactors Conventional rotating stirrers are poorly suited to flow reactors High capital/maintenance cost of mechanical seals Single mechanical seals leak product out Double mechanical seals leak product in High axial mixing Long (multi impeller shafts) shafts create stability problems Centrifugal separation problems (two phase mixtures) Baffles are difficult to design and install

Coflore – Transverse Mixing Efficient radial mixing No baffles (self baffling) No seals or magnetic couplings No centrifugal effects No shaft stability problems

Ten reaction cells cut within a monolithic block Coflore ACR – Lab scale Lab scale Ten reaction cells cut within a monolithic block Discharge Reaction cell Inter-stage channel Agitator Product flow Feed

The bench top shaker platform can handle a range of reactor blocks Coflore ACR – Lab scale The bench top shaker platform can handle a range of reactor blocks Patents pending Counter current reactor block Standard 100 millilitre reactor block Standard 10 millilitre reactor block

Coflore ACR – Lab scale Interchangeable agitators for different applications and controlling cell volume Ceramic agitator Spring agitator for two phase mixtures Control RTD and surface to volume ratio with different diameter agitators Basket agitator for handling catalyst Hastelloy agitator

Coflore ATR – Industrial scale Industrial scale Coflore systems use the same mixing technique but the reaction cells are expanded into long tubes Operating capacity - 1 to 10 litres 10 temperature control zones High design pressure/temperature Low pressure drop High mixing efficiency Patents pending Patents pending

Coflore Design - Mixing Liquid homogeneous Equivalent to static mixer at 4 m/s L/L Equivalent to ½ litre batch at 400 rpm G/L > 1 l batch at 600 rpm G/L/S 5 times better than 100 ml batch Homogenous liquids Gas/liquid mixtures Slurries

Coflore – Applications List of reactions: Hoffman reaction Suzuki reaction Bourne reaction Nitration Polymerisations Grignard reactions De-hydrogenations Bu-Li Solid handling: PVA particles, 50-200 µm, 30% concentration Alumina particles, 50-200 µm, 10% Caesium carbonate, up to 10% Precipitation of NaCl up to 25% Precipitation of hydroiodide salt of N-iodomorpholine Semicarbazone synthesis Nanoparticles clumps Pd/Al2O3 retained in the block Enzyme in whole cells Crystallisation of CaCO3 Crystallisation of glycine

Coflore – Solid handling Browne, D., et al., Continuous Flow Processing of Slurries: Evaluation of an Agitated Cell Reactor, OPRD, 2011, 15 (3), pp 693–697

Coflore Design – Solid handling Browne, D., et al., Continuous Flow Processing of Slurries: Evaluation of an Agitated Cell Reactor, OPRD, 2011, 15 (3), pp 693–697

Coflore – test results API: Gabapentin Hofmann Degradation

Biocatalytic oxidase DL – amino acid resolution: Production of L – amino acids and α – keto acid. Move away from using a batch process towards a continuous system. G/L/S system. > 24 hours reaction time Enzyme as a slurry, loaded on whole cells.

1-10 litre ATR flow reactor Biocatalytic oxidase Flow - 1 litre ATR (<120 strokes pm mixer) Batch - 1 litre (400 rpm mixer) 1-10 litre ATR flow reactor

1-10 litre ATR flow reactor Biocatalytic oxidase Flow - 1 litre ATR (<120 strokes pm mixer) Flow - 10 litre ATR (<120 strokes pm mixer) (70% less oxygen) Batch - 1 litre (400 rpm mixer) Batch - 4 litre batch (400 rpm mixer) 1-10 litre ATR flow reactor

Biocatalytic oxidase Continuous makes this process scalable LCA data: 10 L continuous vs 10 1L batch cycles 88% reduction in kWh/L consumption 90% reduction in CO2 production Energy consumption and CO2 production increase more slowly in continuous than batch even more benefits will be achieved at larger scale 1-10 litre ATR flow reactor

Biocatalytic oxidase 10 – 80 ml ACR flow reactor

Continuous crystallisation – preliminary results Calcium carbonate crystals CaCl2 + Na2CO3 CaCO3 + 2NaCl ACR 100, 10 ml/min Test run = 3 hours, consistent particle size Tests performed by CMAC

Continuous crystallisation – preliminary results Calcium carbonate crystals CaCl2 + Na2CO3 CaCO3 + 2NaCl ACR 100, 10 ml/min Test run = 3 hours, consistent particle size Tests performed by CMAC

AMT focuses Solid handling Work up – Counter current extraction Pump selection – Gravity feed

Thank You! Mixing independent of throughput Age segregation of products Scale-ability Multi-phase handling From 10 ml to 10 litres volume