Static devolatilizers include:
* Falling strand devolatilizers: Polymer is partitioned into many individual strands which fall down in a vacuum chamber. Diffusion moves volatiles into the gas phase, which are then collected via a vacuum system. This is usually the last stage of a devolatizing process, when vapor pressure is low.
* Falling film evaporator: Polymer falls down vertical walls, volatiles diffusing on the side that is not in contact with the walls.
* Tube evaporators: A boiling polymer solution flows downward in a vertical shell and tube heat exchanger into a separator. Polymer is collected at the bottom, vapor is collected via a vacuum system and condensers.
* Flash evaporators: A polymer solution is preheated and brought into a separator, where pressure below the vapor pressure of the solution leads to a part of the volatiles evaporating