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In devolatilization units, static mixers play a very important role. They are applied for the admixing and dispersion of a stripping agent such as water, nitrogen or CO2 into the polymer solution, as well as for the rapid vaporization of the volatiles upstream of the flash vessel.
A very low content of undesirable compounds as well as a minimum degradation of the polymer can be achieved by a short residence time and and a narrow residence time distribution in the complete unit.
Sulzer supplies complete devolitalization units with one ore more stages.
A typical Sulzer 2nd stage devolatilization unit.
3 SMX stripping agent mixer
5 Gear pump
7 Condenser
12 Devolatilization vessel
13 Separation column
14 Stripping agent
15 Vacuum pump
16 Decanter
17 Oligomers |