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4*8 Mesh Drying Adsorbent Molecular Sieve 3a for Removing Moisture

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China Mainland
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**4*8 mesh drying adsorbent molecular sieve 3a for removing moisture**.

Chemxin Molecular Sieve type 3A is an alkali metal alumina-silicate; it is the potassium form of the type A crystal structure. Type 3A has an effective pore opening of about 3 angstroms (0.3nm). This is large enough to allow in moisture, but excludes molecules such as unsaturated hydrocarbons which can potentially form polymers; and this maximizes lifetime when dehydrating such molecules.

1.Specification.

Model	3A
Color	Light gray
Nominal pore diameter	3 angstroms
Shape	Sphere		Pellet
Diameter (mm)	1.7-2.5 (8*12 mesh)	3.0-5.0 (4*8 mesh)	1.6 (1/16 inch)	3.2 (1/8 inch)
Size ratio up to grade (%)	=98	=98	=96	=96
Bulk density (g/ml)	=0.70	=0.70	=0.68	=0.68
Wear ratio (%)	=0.20	=0.20	=0.40	=0.40
Crushing strength (N)	=35/piece	=85/piece	=30/piece	=50/piece
Static H2O adsorption (%)	=21	=21	=21	=21
Dynamic capacity (%)	=20	=20	=20	=20
Ethylene adsorption (‰)	=3.0	=3.0	=3.0	=3.0
Water content (%)	=1.5	=1.5	=1.5	=1.5
Typical Chemical Formula	0.4K2O . 0.6Na2O . Al2O3 . 2SiO2 . 4.5 H2O (SiO2 : Al2O3 ˜2)
Typical Application	a) Drying of unsaturated hydrocarbons (e.g. ethylene, propylene, butadien) b) Cracked Gas Drying c) Drying of natural gas, if COS minimization is essential, or a minimum co-adsorption of hydrocarbons is required. d) Drying of highly polar compounds, such as methanol and ethanol e) Drying of liquid alcohol f) Static, (non-regenerative) dehydration of insulating glass units, whether air filled or gas-filled. g) Drying of CNG.

2. Regeneration:

Chemxin molecular sieve Type 3A can be regenerated by either heating in the case of thermal swing processes; or by lowering the pressure in the case of pressure swing processes.
To remove moisture from a 3A molecular sieve, a temperature of 200-230°C is required. A properly regenerated molecular sieve can give moisture dew points below -100°C.
The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process.

3. Size:
3A - Zeolite are available in beads of 1-2 mm(10x18 mesh), 2-3 mm(8x12 mesh), 2.5-5 mm(4x8 mesh) and as powder, and in pellet 1.6mm, 3.2mm.

4. Attention:
To avoid damp and pre-adsorption of organic before running, or must to be reactivated.

Package & Shipment.