Metering of caprolactam using LEWA process diaphragm pumps

Caprolactam is the basis for production of the plastic polyamide 6.

LEWA diaphragm pumps are very well suited for the specific applications of conveyance of caprolactam melts: The pumps are completely heatable, equipped according to customer specification and optimized for continuous operation.

Solution

LEWA process diaphragm pumps convey caprolactam melts controllably via a frequency converter.

Performance example:

  • Temperature: 100°C
  • Flow rate: 11m3/h
  • Pressure: 36 bar

LEWA triplex process diaphragm pumps offer the following advantages:

  • Outstanding service life in comparison to conventional screw pumps, for example
  • High efficiency
  • Safe and gentle operation with caprolactam melts
  • Proven and complete system solution
  • Low investment and operating costs

Background

Caprolactam is the starting material for the ring-opening polymerization of polyamide 6 (perlon).

A second option for polymerization is in the hydrolytic splitting of the amide bond and subsequent polycondensation. Polyamide 6 is produced yearly by the megaton.

At ambient temperature, caprolactam forms white crystals, which are quite soluble in water. Therefore it is normally stored at temperatures over 80 °C until it is used.

Source: Wikipedia, February 2012

With its varied properties, it is an ideal initial material for a wide variety of products:

  • Engineering plastics, such as tool parts and molding parts
  • Carpets and household textiles
  • Packaging film
  • Stockings, bathing suits and special suits
  • Fishing nets, brushes, wires and cables

Industries

Plastics processing

LEWA supports you in plastics processing with custom-built plants and systems. Ask our experts for more information!

Products

LEWA ecoflow® process pumps for high-pressure applications

LEWA ecoflow process pump

The LEWA ecoflow process diaphragm pump is the top performer among innovative and universal process pumps for high-pressure process technology.

LEWA triplex® process pumps for high-pressure processes

LEWA triplex process pump

LEWA triplex is the most compact process pump in the world for high-pressure processes in all branches of industry. Contact us, we are happy to help!

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© 2019 LEWA GmbH