Zeochem offers a wide variety of adsorbents to remove contaminants from hydrocarbon streams in diverse refinery applications. Contaminants such as COS, CS2, H2S, HF, oxygenates, ammonia (NH3) and other nitrogen and sulphur compounds can be removed using Zeochem products in regenerative and non-regenerative adsorption processes. These adsorption processes can include mixed and single bed designs…
The effective dehydration of cracked gases and olefin streams is critical to avoid freezing or the formation of hydrates during cryogenic processing. Molecular sieves are used to remove water and other contaminants such as sulphur in these olefin streams. The diversity of the cracked gas feedstocks and the reactivity of the streams processed present particularly…
For the purification of hydrogen Zeochem recommends the use of a high quality 5A product which is designed specifically to remove CO molecules via a PSA process. This product, Zeochem Z5-01, is successfully in use in numerous hydrogen plants worldwide.
Molecular sieve adsorbents are crystalline alumino-silicates, known as zeolites. Their unique structure allows the water of crystallization to be removed, leaving a porous crystalline structure. These pores or “cages” have a high affinity to re-adsorb water or other polar molecules. Aided by strong ionic forces (electrostatic fields) due to the presence of cations such as…
