Polyethylene production with LEWA pumps and systems

LEWA manufactures metering pumps and metering systems for the polymerization of ethylene that meet your requirements.

The following plastics are produced in the processes of polyethylene production with the aid of LEWA products:

  • HDPE (High Density Polyethylene)
  • MDPE (Medium Density Polyethylene)
  • LLDPE (Linear Low Density Polyethylene)
  • LDPE (Low Density Polyethylene)

Solutions polymerization

LEWA pumps offer the following advantages for polyethylene production:

  • Hermetically tight
  • Pressures over 300 bar
  • High flow rates
  • Drives with electrical stroke adjustment
  • Motors for frequency converter operation
  • Wide reproducible adjustment range
  • Extremely precise flow rates
  • Sturdiness and reliability
  • Explosion proof

Areas of application in polymerization

LEWA supplies metering pumps and systems for ethylene polymerization which are used in processes including the following:

  • Radical production in high pressure reactors, e.g., autoclave reactors, tube reactors (LDPE)
  • Catalytic production in low pressure reactors (MDPE, HDPE, LLDPE)

Application examples are:

  • Packaging materials, e.g., shrink wrap, wrapping film, film for “bag-in-box” applications, food packaging film, laminated papers
  • Highly stressable containers for industrial use

Background for ethylene polymerization

Process description

Polyethylene consists of hydrogen and carbon. The properties of polyethylene can be changed through copolymerization. It is very resistant to acids, alkaline solutions and other chemicals. Its range of application is limited because it softens at temperatures above 80 °C. Polyethylene is a thermoplastic produced from the polymerization of ethylene. It belongs to the polyolefins and is produced based on ethylene gas.

LDPE (soft polyethylene) results from the high-pressure process and HDPE (hard polyethylene) from the low-pressure process. In both production methods, it appears first as a viscous fluid.

Source: Wikipedia, February 2012

Industries

Petrochemicals

LEWA provides durable pumps and metering systems for various processes in the petrochemical industry. Ask our experts for more information!

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

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LEWA ecoflow diaphragm metering pump all around talent The ecoflow® diaphragm metering pump from LEWA is a true all-around talent in the field of metering and mixing and can be used in all industries.

LEWA ecoflow® process pumps for high-pressure applications

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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.

Customer-Specific Metering, Mixing or Filling Systems from LEWA

LEWA production units LEWA develops customized production units for metering, mixing, and filling fluids. Contact us and let us advise you!

Customer-Specific Metering Systems from LEWA

LEWA customer specific metering systems LEWA provides you with custom-designed metering systems according to your specifications. Trust in our experience gained from 60 years of metering technology.

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© 2019 LEWA GmbH