PBT Polybutylenterephthalat

Guichon fertigt Sonderarmaturen zur Herstellung von PET/PBT

Ablassventile, MehrwegeventileEinspeiseventile

FAQ PDF
3-Wege Luft-Kükenhahn
Typ : 301

DN 15 bis 150 PN 16 bis 320
– Heizmantel
– Betätigung : Lifthebel und Handrad
Edelstahl oder Sonderlegierungen
3-Wege Luft-Kükenhahn 
Typ : 301
3-Wege Kolbenventil
DN 100 x 100 x 100 PN 2500 Lbs
– Heizmantel
– Elektrische Antriebe (Auf-Zu und Regelbetrieb)
Edelstahl 1.4404 (316L)
3-Wege Kolbenventil

Herstellung

  • Materialen C-Stahl (CS), Edelstahl (SS), Duplex & Super Duplex, Titan (Ti), Zirkonium (Zr), Uranus® B6, Tantal (Ta), Nickel (Ni), Hastelloy®, Monel
  • Konstruktion Schweisstechnik, Gusstechnik, Aus dem Vollen (Monoblock)

Verwendung

  • Betriebsbedingungen Hochdruck, Hochtemperatur, Tieftemperatur, Abrasion, Korrosion, Hochviskosität, Vakuum, Langlebigkeit, Geräuscharmut, Totraumfreiheit
  • Medien Flüssigkeiten, Flüssigkeiten mit festen Bestandteilen, Gas, Pulver und pulverartige Medien, Viskose und hochviskose Medien

FAQ - PBT - Polybutylenterephthalat

PBT – Polybutylenterephthalat – Anwendungen von Polybutylenterephthalat :

– Insulating material for high temperature and high stress
– Boxes contactors
– Switches
– Household appliances
– Gear

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PBT – Polybutylenterephthalat – Herstellungsprozess von Polybutylenterephthalat :

PBT (polybuthylene terephthalate) emerged on the market towards the sixties as a raw material for synthetic fibers and engineering plastics. It belongs to the group of linear, saturated polyesters. PBT faces inter-material competition from other thermoplastics with similar properties such as polyacetal, nylon or other terephthalic polymers (PET, PTT).

The main raw materials used to manufacture PBT are 1,4-butanediol (BDO), dimethyl terephthalate (DMT), purified terephthalic acid (PTA) and catalysts. Hitachi, Uhde Inventa-Fischer, and Lurgi Zimmer AG are the main licensors of PBT technology and cover the full spectrum of process variations (DMT vs PTA route,batch vs continuous).

There are different design variations that go from a 5-Reactor (5-R) to a compact 2-Reactor (2-R) configuration. Recent technologies (Zimmer COMBI reactor, Uhde Inventa-Fischer ESPREE and DISCAGE reactors) propose a 2-R design by combining the esterification and pre-polycondensation into one reactor, thus reducing the overall investment. As an example, the Zimmer 2-R process is illustrated in the figure 1 below.

Example of PBT manufacturing process

Figure 1. Zimmer continuous PBT process (PTA route). During the reaction, THF and water are also produced under elevated temperature and reduced pressure

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PBT – Polybutylenterephthalat – Empfohlene Ventile :

Each step of the production process of PBT has undergone many improvements over the years. Design development, research of catalysts and optimization of special valves for PBT continues today.

Posted in: FAQ - PBT - Polybutylenterephthalat