Detailed Product Description

  MOLSIVE ADSORBENT Type 3A

Description                                    Regeneration

Molecular sieve 3A the potassium form of the Type A         Molecular sieve Adsorbent Type 3A can be regenerated

 crystal structure, is an alkali metal alumina                 for re-use by purging or evacuating at elevated temperatures.

-silicate, Type 3A will adsorb molecules with                The  degree of regeneration (water removal) is dependent

 critical diameters up to 3 angstroms.                       on the temperature and Humidity of the purge gas.

                  

Applications                                    Shipping Information

Type 3A is the molecular sieve adsorbent for                 Molecular sieve 3A is available as powder, 1/16-in

Dehydration of unsaturated hydrocarbon streams such as       and 1/8-in. Pellets etc. it is shipped in airproof steel containers.

Cracked gas, propylene, butadiene, and acetylene.           

It is also used for drying polar liquids such as ethanol.                            

The small pore size of Type 3A prevents co-adsorption         Chemical Formula

Of hydrocarbons by excluding all other molecules.             K₁₂[(AlO₂)₁₂(SiO₂)₁₂].XH₂O

Typical Properties	1/16	1/8	Powder
Nominal Pore Diameter	3 Angstroms	3 Angstroms	3 Angstroms
Bulk Density	40 lb/cu ft	40 lb/cu ft	----
Hydrated Wet Density	----	----	2.03 g/cc
Activated Dry Density	----	----	1.57 g/cc
Particle Diameter	0.0575 in. to 0.0775 in.	0.115 in. to 0.135 in.	< 10 microns
Crush Strength	5.0 lbs	12.0 lbs	----
Crystal Structure	----	----	Cubic
Heat of Adsorption (Max)	1800 btu/lb H2O	1800 btu/lb H2O	1800 btu/lb H2O
Equilibrium H2O Capacity**	20% wt	20% wt	23% wt
Water Content	< 1.5% wt	< 1.5% wt	< 2.5% wt
Molecules Adsorbed	Molecules with an effective diameter < 3 angstroms, including H2O, NH3 Molecules with an effective diameter > 3 angstroms, e.g. ethane.
Molecules Excluded

                                            

*Agglomerate particle size. Average crystal size is 1.0 to 4.0 microns.

** LBS H₂O/100 lbs activated adsorbent at 17.5 mm Hg, 25