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4A Molecular Sieve  


Description: An alkali metal alumino-silicate, in the sodium form of the Type A crystal structure. Type 4A will adsorb molecules with critical diameters up to 4 Å angstroms. All molecules which can be adsorbed on Molecular Sieve Type 3A can be adsorbed on Type 4A. Applications: Multi-purpose. Used for the dehydration and purification of various hydrocarbon and non-hydrocarbon gas and liquid streams.

 

• Drying and removing of CO2 from natural gas, LPG, air, inert and atmospheric gases, etc.

• Drying of organic liquids such as refrigerants, LPG, and gasoline.

• Removal of hydrocarbons, ammonia and methanol from gas streams (ammonia synthesis gas treating)

Regeneration: Type 4A molecular sieve can be regenerated for re-use by purging or evacuating at elevated temperatures. The degree of regeneration (water removal) is dependent on the temperature and humidity of the purge gas.

• Using a dry purge gas at an inlet temperature of 200-350°C and a pressure of 0.3 ~ 0.5 kg/ cm², heat the molecular sieve bed. As the temperature in outlet reaches 150 ~ 180°C, let the bed cool off.

Handling and Storage: Product must be stored in a dry location (relative humidity <90%) to prevent re-adsorption of water. Opened packages should be resealed to prevent contamination of the product. Whenever possible, rotate stock to use oldest material first.

 

4A Molecular Sieve

Application: 4A Molecular Sieve is used commercially for dehydration of various gases and liquids, refrigerant, medicine, electronic components and changeable substance, purification of argon gas.

Measurement

Properties

Unit

Specification

Diameter

mm

1.6-2.5

3-5

5-8

1.6

3.2

Static Water Adsorption

≥ mg/g

215 

215

215

215

215

Methanol Adsorption

≥ mg/g

  140

140

140

140

140

Bulk Density

g/ml

0.70±0.02

0.68±0.02

0.66±0.02

0.68±0.02

0.66±0.02

Crush Strength

≥ N

35 

80

140

32

80

Wear Rate

≤ %wt

0.1

0.1

0.1

0.2

0.2

Package Moisture

≤ %wt

1.0

1.0

1.0

1.0

1.0

 

4A Molecular Sieve DG

Application: 4A Molecular Sieve DG is used commercially in deep drying natural gas alkane, it is also used for dehydration of various gases and liquids, refrigerant, medicine, electronic components and changeable substance, purification of argon gas.

Properties

Measurement Unit

Spherical Cylindrical

Diameter

mm

3-5

1.6

3.2

Static Water Adsorption

≥ mg/g

215

215

215

Methanol Adsorption

≥ mg/g

140 

140

140

Bulk Density

g/ml

0.68±0.02

0.68±0.02

0.68±0.02

Crush Strength

≥ N

100

40

90

Wear Rate

≤ %wt

0.1

0.2

0.2

Package Moisture

≤ wt

1.0

1.0

1.0

 

4A Activated Powder

Application: Available in powder for dehydration of coating and polyurethane glue etc.

Properties

Measurement Unit

Cylindrical

Form ----

Powder

 

Pore Diameter

A

4

Whiteness

≥ %

90

Particle Diameter

μ m

2-4

Static Water Adsorption

≥mg/g

240

PH

11.5

Gravity

≥g/ml

44

Package Moisture

≤ %wt

2