Description
During the polymer reaction and mixing process, it is usually necessary to remove a large amount of volatile components, such as water vapor, low molecular products, monomers, and easily crystallized materials. During operation, there is often melt eruption from the exhaust port or blockage of the exhaust port due to cooling and scaling, which affects the normal operation of the host. This trouble can be solved by utilizing the material pushing ability, self-cleaning ability and completely open channels along the axial direction of fully meshed co-rotating twin-screw extruders. Cooperating with the vacuum system, the overflowing material is pushed back to the host while removing volatile matter, thereby achieving the purpose of devolatilization and long-term stable operation of the host, reducing downtime and processing time, reducing labor costs, improving product purity, and reducing black spots. Optimize production capacity and process operating parameters.
Design principles
Utilizing the pushing ability, self-cleaning ability and completely open channels along the axial direction of fully meshed co-rotating twin-screw extrusion, the gas is extracted through the vacuum exhaust system and the extruded melt is squeezed back in the reverse direction to achieve gas-solidification. separation.
Application areas
It is suitable for devolatilization, monomer removal, rubber dehydration and other processes in reaction extrusion, mixing and alloying processes.
Structural features
It is composed of building block type co-directional fully meshing twin screws, barrel, vacuum exhaust tank, condensation, scale and other residual storage tanks, which is easy to clean. The barrel can be heated and equipped with cooling channels; the exhaust tank is connected to the vacuum system; it can be flexibly combined with the host machine and can be installed horizontally or vertically to achieve multi-point exhaust.