Molecular Sieve Supplier & Factories for Hamburg

Zeolite 3A features a nominal pore opening of roughly 3 Ångströms, engineered via potassium-ion exchange. Polar water molecules (~2.6 Å) pass smoothly into the intra-crystalline cage structure, whereas larger unsaturated hydrocarbon molecules such as ethylene (~3.9 Å) and propylene are strictly sterically excluded. Using a 4A sieve would allow co-adsorption of these hydrocarbons, leading to catalytic polymerization and rapid coking within the pores at elevated regeneration temperatures.

Thermal Swing Adsorption (TSA) regeneration protocols for 13X-APG in pre-purification units typically require dry, CO₂-free purge gases (such as waste nitrogen from the ASU) heated to between 170°C and 250°C. Maintaining an adequate plateau duration ensures complete desorption of carbon dioxide and moisture, guaranteeing exit dew points below -70°C before the bed is brought through a controlled cooling cycle.

For high-velocity vertical columns subject to cyclic pressure variations (such as PSA systems), an individual bead crush strength of ≥30–45 N (for 1.6–2.5 mm beads) and an attrition rate <0.1% by weight are essential. Low crush strength or inadequate binder chemistry triggers dusting, leading to progressive bed compaction, increased column pressure drop, and downstream particulate fouling.

Our molecular sieves are packaged immediately after rotary activation at temperatures over 550°C. Standard export configurations for European sea routes include airtight hermetically sealed steel drums (typically 125 kg or 140 kg) equipped with rubber gasket clamps, or 1000 kg heavy-duty super sacks lined with multiple heat-sealed poly-aluminum composite barrier plies, maintaining factory-dry initial moisture below 1.5 wt%.