Production of polyurethane with LEWA process diaphragm pumps

Toluenediamine (TDA) as preliminary product and diaminotoluene (MDI), as well as toluene diisocyanate (TDI) as intermediate produce play an important role in the production of polyurethane. TDA is produced by the reaction of dinitrotoluene (DNT) and the use of nickel-raney as a catalyst; both fluids require an absolute process safe and precise metering.

Reliable conveying with LEWA pumps from preliminary and intermediate products during polyurethane production have made us known as a partner for safety and reliability in this sector.

Solutions

Advantages of LEWA process diaphragm pumps

  • Hermetically tight (important for isocyanates)
  • High working pressures are possible
  • Suspension capability (nickel-raney catalyst)
  • Safe in continuous operation
  • Very high availability and reliability (optimized for continuous operation)
  • Low life cycle costs

Source graphics/diagrams: www.fsk-vsv.de February 2012

Areas of application

Polyurethanes (PUR) belong to the most important polymers.

The technical area of application of PUR goes from "PUR soles" to "PUR foam". The main area of application of polyurethane is the use of foam, e.g., for upholstered furniture, mattresses, sponges, winter clothing, coating for carpets, constructional foam for thermal insulation, packing material, etc.

They are also used as paint and adhesives, as thermoplastic plastics for the production of rollers, rolls, and as elastomers and fibers, e.g. as elastane.

Industries

Chemicals

LEWA supplies you with individual chemical pumps and customized system solutions for various areas of application in the chemical industry.

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!

LEWA ecofoam® Blowing Agent Metering System

LEWA ecofoam metering system

LEWA ecofoam is the number-one choice when it comes to manufacturing foam. Benefit from a complete metering system for foaming plastic.

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© 2019 LEWA GmbH
© 2019 LEWA GmbH