Devolatilization

NFM/WE Devolatilization Technology Includes:

• Patented multi-stage venting
• Rear venting
• Counter-current and co-current stripping
• Streamlined pre-concentration systems
• Large-scale processing techniques for extrusion drying of elastomer solutions

Advantages of NFM/WE’s Polymer Devolatilization Technology:

• Capable of handling many viscosity levels
• Contained and recoverable waste systems
• Short residence time
• Fast changeovers
• Minimal thermal history
• Efficient heat transfer
• Narrow residence time distribution
• Efficient surface renewal

Common Devolatilized Polymers 

Styrenic Materials

SAN | ABS | SMA | PS | SB-Copolymers
SIS, SEBS, &  SBS Block Copolymer

Engineering Thermoplastics

Polyacrylate | PEI

Synthetic Rubber

SBR | SSBR | EPDM | PBd | Silicones
BR | NiBR | MdBR | PI

Other Polymers

PMMA | PE | PP | Expoxies
Metallocenes

WE Series Extruder Capacities

Process Development & Pilot Facilities

NFM/WE has taken a comprehensive approach to the devolatilization process in order to assure performance in each stage of the process from the reactor to the finished pellet or crumb. NFM/WE has in-house expertise in concentration systems, twin-screw extruders, and specialty pelletizing systems for elastomers.

NFM/WE’s Class 1 Div 2 pilot plant enables us to demonstrate the solution devolatilization of polymers with feed concentrations between 6% and 70%. Feeding rates of up to 400 kg/hr have been demonstrated from 25% solids.

The Pilot Plant has been continuously upgraded since its opening in 2004 and includes capabilities which are truly unique in North America. Equipment in the Pilot Plant is of sufficient size to ensure that at the conclusion of a trial, the process is ready for scale up.

Examples of Major Process Development Projects: