Molecular Sieve 3A

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