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US 7,622,061 B2Granted
Apparatus for crystallizing polymer particles
AssigneeUop LLC
InventorJames F. McGehee
Life of this patent
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Abstract
The present invention is a process and apparatus for conserving loss of heat while forming and crystallizing polymer particles in a liquid. The cooling liquid quenches the polymer during particle molding to facilitate shaping. The cooling liquid cools the polymer particles not below a temperature that allows adequate crystallization to occur. Cooling liquid is quickly switched with a warming liquid, so the temperature of the polymer is in the crystallization range and the heat of crystallization self-heats the polymer to a higher temperature.
Claims4
An apparatus for producing solid crystallized polymer particles comprising:
- a molding device for forming molten polymer in a quenching chamber with a cooling liquid inlet for quenching said molten polymer in a cooling liquid to obtain solid polymer;
- a cooling liquid removal device in fluid communication with said quenching chamber for removing a substantial amount of said cooling liquid from said solid polymer;
- a conduit for transporting solid polymer from said cooling liquid removal device in warming liquid to a riser;
- and
- said riser for lifting said solid polymer and warming liquid to a top of an SSP reactor system.
2 more elements
Dependencies are inferred from the claim text.