Your processes

• Cooling polymer fiber melts, e.g. PET, PBT, Spandex, or cellulosic fibers, upstream of the spinning step in modern continuous fiber plants.
   
• Melt viscosity adjustment by temperature variation to obtain optimal processing conditions. 
   
• Dissolving or swelling raw materials for fiber spinning.

Our offering

Sulzer SMR Mixer-Reactor is a state-of-the-art device in removing heat from viscous material, it is used as a polymerization reactor or as a polymer cooler. It has been successfully applied to the synthetic fiber industry as primary or secondary PET melt cooler, either in grass-root plants or retrofitted into an existing plant. 

Polymer fibres require immediate cooling after the polymerization reactor to reduce thermal degradation. The Sulzer Mixer Reactor is a tube bundle heat exchanger that allows high-effective cooling of viscous media. The SMR is your first choice, if you wish to combine effective mixing with controlled heat transfer. 

General benefits

• High heat transfer capability
• Narrow residence time
• Intensive radial mixing
• Plug-flow behavior, no mal-distribution effect
• Gentle, low-shear treatment
• Low pressure drop
• No moving parts, therefore minimum maintenance

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