mSORB 4A-NG is a sodium type A zeolite bead, Interra Global's natural gas grade of 4A molecular sieve. Its nominal 4 angstrom pore opening admits water and other small molecules, and the grade is formulated for natural gas dehydration where high water capacity and low pressure drop are wanted. The beads combine high mass transfer efficiency with the durability to hold up through repeated adsorption and regeneration cycles, and the material is thermally stable at very high temperatures. It is the high-capacity grade of Interra Global's two natural gas molecular sieves and the one usually chosen for LNG service, where the feed gas has typically been treated for acid gas before it reaches the dehydration unit. mSORB 3A-NG is the selective grade, chosen where carbon dioxide, hydrogen sulfide, or heavier hydrocarbons remain in the gas or where limited regeneration heat matters, and the natural gas dehydration page sets out the choice between them.
Chemical Formula: Na₁₂[(AlO₂)₁₂(SiO₂)₁₂]·nH₂O
Where a 4A molecular sieve is preferred, mSORB 4A-NG is typically used for:
- Dehydrating natural gas in LNG pretreatment, ahead of liquefaction
- Dehydrating natural gas ahead of NGL recovery and NGL production
- Drying air and a wide range of non-olefinic liquids and gases
- 4x8 mesh beads, product code 4A48B-NG
- 8x12 mesh beads, product code 4A812B-NG
Supplied in 330 lb (150 kg) steel drums and 2,100 lb (953 kg) super sacks. The bead size suited to a unit depends on its design, and Interra Global can review the choice for a given unit. Other bead sizes and packaging are quoted on request.