Molecular sieves are often used in Oil & Gas and Refining applications to purify gas streams, as well as to separate and dry materials. A molecular (or mol) sieve is essentially a filter that contain microscopic pores of precise size that adsorb specific gas or liquid molecules, but not larger molecules.
The biggest issue with these sieves is that there is a limit to how much material they can adsorb (around 20% by weight, for example). As a result, the molecular sieve will need to be “regenerated” to remove the adsorbed material and prepare the mol sieve for re-use. Chromalox process heaters are a reliable solution to regenerate Mol Sieves. Heating a carrier gas, such as nitrogen, to high enough temperatures to reverse the absorption process, these heaters keep gas streams pure.