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3A Molecular Sieve

  Introduction

Chemxin Molecular Sieve type 3A is an alkali metal alumino-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 maximises lifetime when dehydrating such molecules.

  Technical Parameter

Model 3A
Color Light gray
Nominal pore diameter 3 angstroms
Shape Sphere Pellet
Diameter (mm) 1.7-2.5 3.0-5.0 1.6 3.2
Size ratio up to grade (%) 98 98 96 96
Bulk density (g/ml) 0.72 0.70 0.66 0.66
Wear ratio (%) 0.20 0.20 0.2 0.2
Crushing strength (N) 55/piece ≥85/piece ≥30/piece ≥40/piece
Static H2O adsorption (%) 21 21 21 21
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
SiO
2 : 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.

Package : Carton box; Carton drum; Steel drum
MOQ: 1 Metric Ton
Payment Terms: T/T; L/C; PayPal; West Union
Warranty: a) By National Standard GBT 10504-2008
b) Offer lifetime consultation on problems occurred

Container 20GP 40GP Sample order
Quantity 12MT 24MT < 5kg
Delivery Time 3 days 5 days Stock available

   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.

   Size 
3A - Zeolites 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.

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

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