Adsorbent 3A Molecular Sieve for Ethanol Dehydration
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Adsorbent 3A Molecular Sieve for Ethanol Dehydration

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  • 3A molecular sieve

  • CHEMXIN

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Adsorbent beads 3a molecular sieve sphere 1.7-2.5 mm 3a zeolite desiccant for ethanol dehydration

Adsorbent beads 3a molecular sieve sphere 1.7-2.5 mm 3a zeolite desiccant for ethanol dehydration  


Chemxin Molecular Sieve type 3A is an alkali metal aluminosilicate; 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.


Technical Parameter:

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) ≥55/piece ≥85/piece ≥30/piece ≥50/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 (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.


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


Adsorbent beads 3a molecular sieve sphere 1.7-2.5 mm 3a zeolite desiccant for ethanol dehydration

Adsorbent beads 3a molecular sieve sphere 1.7-2.5 mm 3a zeolite desiccant for ethanol dehydration   
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