Molecular sieves in gas processing: Effects and consequences by contaminants
The principles of adsorption on molecular sieves are easy to understand, but practice sometimes reveals traps to avoid.
In the natural gas processing chain, pretreatment typically includes removing acid gas, sulfur and mercury. The moisture specification of the gas depends on the downstream equipment. When cryogenic processes are involved, such as in natural gas liquids (NGLs) recovery or liquefied natural gas (LNG) production, avoiding hydrates requires water dew points that only zeolite-based molecular sieves can achieve.
The principles of adsorption on molecular sieves are easy to understand, but practice sometimes reveals traps to avoid. The porous crystalline structure and the large surface area exhibiting a high electronic activity give molecular sieves their outstanding adsorption properties.
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