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Molecular Sieve 3A

Molecular Sieve 3A
Product Detailed
Related Categories:Catalyst
Professional manufacture and exporter for Molecular Sieve 3A Beads&Pellets Ethanol,cracked gas drying etc.

Introdution

Molecular Sieve 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(0.3mm).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.

Typical Chemical Formula

0.45K2O·0.55Na2O·Al2O3·2.0SiO2·4.5H2O

Technical Parameter

Item

Unit

Specification

Diameter

mm

0.5-0.9

1.0-1.5

1.5-2.0

Bulk density

g/ml

≥0.68

≥0.68

≥0.68

Size ratio up to grade

 

≥98.0 

≥98.0

≥98.0

Water adsorption capacity

(Effective)

(RH60,25)

≥18

≥18

≥18

(RH20,25)

≥15

≥15

≥15

Delta T value

(25g sieves/25ml H20)

≥50

≥45

≥45

(10g sieves/10ml H20)

≥38

≥35

≥35

Nitrogen adsorption

Ml/g

≤1.0

≤1.0

≤1.0

Dew point

 

≤-60

≤-60

≤-60

Dust drops

unit

≤15

≤12

≤12

Ignition loss

(950)

≤2

≤2

≤2

Typical Application

Drying of unsaturated hydrocarbons(e.g. ethylene,propylene,butadiene)

Cracked Gas Drying

Drying of natural gas,if COS minimization is essential,or a minimum co-adsorption of hydrocabons is required.

Drying of highly polar compounds,such as methanol and ethanol

Drying of liquid alcohol Static,(non-regenerative)dehydration of insulating glass units,whether air filled or gas-filled

Drying of refrigerants

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 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 1-2mm,(10×18mesh)2-3mm,( 8×12mesh),2.5-5mm, (4×8mesh)and as powder,and in pellet 1.6”,3.0”.

Attention

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

Molecular Sieve 3A



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