Process and apparatus for direct crystallization of polycondensates
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United States of America Patent
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Aug 18, 2020
Grant Date -
Aug 3, 2017
app pub date -
Feb 17, 2017
filing date -
Sep 26, 2012
priority date (Note) -
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Abstract
The present invention relates to a process for continuous production of partly crystalline polycondensate pellet material, comprising the steps of forming a polycondensate melt into pellet material; separating the liquid cooling medium from the pellet material in a first treatment space, wherein the pellets after exit from the first treatment space exhibit a temperature TGR, and crystallizing the pellet material in a second treatment space, wherein in the second treatment space fluidized bed conditions exist, and in the second treatment space the pellets are heated by supply of energy from the exterior by means of a process gas.
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International Classification(s)
- C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
- C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- B29B:PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE ....
- F26B:DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQU....
- B01J:CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, CO....
- B29K:INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, ....
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