PE – Polyethylen

Guichon fertigt Sonderarmaturen zur Herstellung von PE – Polyethylen

Mehrwegeventile, Absperrventile, Ablassventile

FAQ PDF
Siebfilter
Typ : 802

DN 300 PN 10
– Filtration 2 mm
– Anschweissende
Edelstahl (1.4404, 1.4306, usw.)
Siebfilter 
Typ : 802
4-Wege Kolbenventil
DN 80x80x80x80 PN 40
– Drehende Kolben
Edelstahl AISI 316 Ti / 1.4571
4-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 - PE - Polyäthylen

PE – Polyäthylen – Anwendungen von Polyäthylen :

Plastic packaging : plastic bags, bottles of milk, lots of toys ….

Posted in: FAQ - PE - Polyäthylen

PE – Polyäthylen – Herstellungsprozess von Polyäthylen :

Polyethylene (PE) is the most common polymer in the world, produced 85mt / year. This is mainly due to the wide range of possible uses. Depending on its melting point, the PE is divided into several categories: low, medium and high density, each class with specific industrial applications. It occurs in the following forms: high density polyethylene (HDPE), ULDPE (ultra low density polyethylene), LLDPE (linear low density polyethylene), MDPE (medium density polyethylene) HMWPE polyethylene (high molecular weight) and UHMWPE (ultra high molecular weight).

Traditionally, the polymerization was taking place under high pressure (several hundred bars) and high temperature (up to 300°C) but over the years the energy input has been reduced by using catalytic systems. The Ziegler and metallocene catalyst families have proven to be very flexible at copolymerizing ethylene with other olefins and have become the basis for the wide range of polyethylene resins available today, including very low density polyethylene and linear low-density polyethylene.

Polyethylene is mostly produced in slurry, gas-phase fluidized bed reactor or combination of both processes in series (such as like Spherilene and Borstar processes). Either double-tube loop reactors or autoclaves (stirred-tank reactors) are commercially employed for slurry-phase polymerization, in the presence of a catalyst system and a diluent.
The following image illustrates one of the slurry process configurations using a Double-Tube Loop Reactor followed by a gas phase reactor (Borstar process).

Example of PE manufacturing process

Posted in: FAQ - PE - Polyäthylen