METHOD AND DEVICE FOR DIRECT CRYSTALLISATION OF POLYCONDENSATES

A process for continuous production of partly crystalline polycondensate pellet material which comprises the step of crystallizing the pellet material in a second treatment space (6a) under fixed bed conditions by supply of energy from the exterior by means of a process gas, wherein the process gas...

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Bibliographische Detailangaben
Hauptverfasser:	Christel, Andreas, Müller, Martin
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G BLASTING CHEMISTRY COMPOSITIONS BASED THEREON DRYING DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM GENERAL PROCESSES OF COMPOUNDING HEATING LIGHTING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MAKING GRANULES OR PREFORMS MECHANICAL ENGINEERING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	A process for continuous production of partly crystalline polycondensate pellet material which comprises the step of crystallizing the pellet material in a second treatment space (6a) under fixed bed conditions by supply of energy from the exterior by means of a process gas, wherein the process gas has a temperature (TGas), which is higher than the sum of the pellet temperature (TGR) and the temperature increase (TKR) which occurs due to heat of crystallization released hi the second treatment space (6a), i.e., (TGas>(TGR+TKR)). The pellets at the exit from the second treatment space (6a) have an average temperature (TPH), which is 10 to 90° C. higher than the sum of the temperature of the pellets (TGR) and the temperature increase (TKR) which occurs due to heat of crystallization released in the second treatment space (6a), i.e., (TGR+TKR+90° C.)≥TPH≥(TGR+TKR+10°).