Gas Dehydration (Glycol)
Absorption using glycol is the most popular method of removing moisture from natural gas. Glycol’s popularity is due to it being very effective, cheap, readily available, easy to regenerate and gives low vapour losses. It remains the most economic choice for most gas dehydration needs, and it is a well-proven technology requiring minimum maintenance.
Glycol plants are mechanically simple but it is essential that careful attention to detail is followed to create a reliable design that even though the plant may appear simple, design and fabrication is a job for specialists.
GLP are those specialists. We have the expertise and know-how to not only provide conceptual advice and design services to meet exacting needs, but can also provide a total, turnkey solution including the fabrication, installation and full commissioning of the plant.
Gas Dehydration (Molecular Sieve)
GLP is uniquely positioned to assist with all your gas dehydration requirements. Our licensing agreement with Zeochem allows GLP to find a crystal structure particularly suited to individual gas dehydration needs. These structures, or molecular sieves are commonly used to dry natural gas to very low dew points, typically -100°C.
Molecular sieve adsorbents are crystalline alumino-silicates with their unique structure allows the water of crystallization to be removed, leaving a porous crystalline structure and aided by strong ionic forces caused by the presence of cations such as sodium, calcium and potassium, the molecular sieve will adsorb a considerable amount of water or other fluids. If the fluid to be adsorbed is a polar compound, it can be adsorbed with high loadings even at very low concentrations.
This strong adsorptive force allows molecular sieves to remove many gas or liquid impurities to very low levels (PPM or less).
Another feature of molecular sieve adsorbents is its ability to separate gases or liquids by molecular size. The pore or “cage” openings are of the same size as many molecules. In the case of hydrocarbon paraffins, the normal, straight chained molecules can fit into the pores and be adsorbed while the branched chain molecules cannot enter the pores and pass by the molecular sieve adsorbents unabsorbed.
GLP has extensive experience with conceptual design, fabrication, installation and commissioning of molecular sieve plants. We are also happy to undertake an audit of any existing plant to ensure its optimal efficiency and safety.