3A Molecular Sieve

Update: 2018/4/11      View:
  • Brand:    Chengyu
  • Type:    3A
  • Order Online
Introduction

3A Molecular Sieve

 

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
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.

Package :

Carton box; Carton drum; Steel drum

Warranty:

a) By National Standard GBT 10504-2008


b) Offer lifetime consultation on problems occurred

 Regeneration

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 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
 Pls avoid damp and pre-adsorption of organic before running, or it must be reactivated.

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