Separation Technology & Materials

Molecular Sieves

High performance products  - Comprehensive technical support  -  R&D for real-world applications

Zeochem’s beginnings date to 1818 with the manufacturing of chemicals in Uetikon, Switzerland. Molecular sieve manufacture began in Uetikon in 1973. In 1979 molecular sieve production expanded to Louisville , Kentucky, USA. Today Zeochem has manufacturing sites in Uetikon,Switzerland; Louisville, Kentucky; Lianyungan, China and Bosnia Herzegovina. Zeochem maintain their traditional high standard of manufacturing, innovative products and customer focused research and development.

Zeochem Molecular Sieve Applications

Natural Gas Processing

  • Dehydration of natural gas and natural gas liquids
  • Removal of CO2, H2S, mercaptans and other impurities from natural gas or natural gas liquids

Hydrogen Production or Recovery

  • Drying and purification of H2.
  • Thermal swing or pressure swing adsorption

Basic Petrochemical and Synthesis Gas Processes

  • Purification of natural gas feed
  • Drying and purification of the reformer gas prior to the ammonia loop
  • Treating of ammonia off-gas streams Olefin and polyolefin production
  • Drying of cracked olefin gas, ethylene and propylene products
  • Dehydration and purification of ethane feed to the cracker
  • Impurity removal from polyolefin plant feed (catalyst protection from oxygenates, sulfides)

Industrial Gases

  • Dehydration and CO2 removal from air for cryogenic processing
  • Separation of high-purity oxygen from air via Pressure Swing Adsorption (PSA) or Vacuum Swing Adsorption (VSA)
  • Recovery of inert gases by adsorption

Petroleum Refining

  • Dehydration of light-ends (e.g. olefin) for cryogenic recovery
  • Purification of feed to catalytic processes such as isomerization, dimerization and alkylation units

Fuel Ethanol Production

  • Bulk water removal at the azeotrope
  • Purification of food- and pharmaceutical-grade ethanol
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