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13X Molecular Sieves

13X Molecular Sieves

13X Molecular Sieves

中文名:13X分子筛

Chemical Formula: 4/5CaO·1/5Na2O.Al2O3 · (2.8±0.2) SiO2 · (6-7) H2O

Specifications

Item

Unit

Index

Shape

Sphere

Pellet

Diameter

mm

Φ2-3

Φ3-5

Φ5-8

1.6

3.2

Bulk Density

Kg / L

>0.7

>0.7

>0.7

>0.65

>0.65

Crushing strength

N

>30

>70

120

20

50

Wear Ratio

Wt%

<0.5

<0.5

<0.5

<0.5

<0.5

Hot adsorption (Max)

kilojoule/Kg Water

4200

4200

4200

4200

4200

Static water absorptivity

Wt%

>26.5

>26.5

>26.5

>26.5

>26.5

Packing water

Wt%

<1.5

<1.5

<1.5

<1.5

<1.5

Methane adsorption

Wt%

>17.5

>17.5

>17.5

>17.5

>17.5

Packing and Storage

25kg/carton, 150kg/steel drum

On room temperature, relative humidity not more than 90%; not lay bare in the air; keep away from water, acid and soda

Molecular Sieve 13X APG

Molecular Formula: Na2O*Al2O3*(2.8±0.2)SiO2*(6-7)H2O

Applications: Used commercially for air plant feed purification(simultaneously removal of H2O, CO2and part of hydrocarbons)and general gas drying.

Specification:

Properties

Unit

Spherical

Cylindrical

Diameter

mm

1.6-2.5

3-5

5-8

1/8″

1/16″

StaticH2O adsorption

≥ % wt

27

27

27

27

27

CO2 Adsorption

≥ % wt

18

18

18

18

18

Bulk Density

g/ml

0.67±0.02

0.66±0.02

0.66±0.02

0.62±0.02

0.62±0.02

Crush Strength

≥ N

30

60

120

65

30

Wear rate

≤ % wt

0.1

0.1

0.1

0.1

0.1

Package moisture

≤ % wt

1.0

1.0

1.0

1.5

1.5


Molecular Sieve 13X HP

Molecular Formula: Na2O*Al2O3*(2.8±0.2) SiO2*(6-7)H2O

Applications: Used commercially for air plant feed purification and PSA oxygen generation process.

Specification:

Properties

Unit

Spherical

Cylindrical

Diameter

mm

2.0-2.5

3-5

5-8

1/8″

1/16″

StaticH2Oadsorption

≥ % wt

28.5

28.5

28.5

28.5

28.5

CO2 Adsorption

≥ % wt

19.5

19.5

19.5

19.5

19.5

Bulk Density

g/ml

0.64±0.02

0.64±0.02

0.66±0.02

0.62±0.02

0.62±0.02

Crush Strength

≥ N

25

80

100

65

25

Wear rate

≤ % wt

2.0

2.0

2.0

2.0

2.0

Package moisture

≤ % wt

1.0

1.0

1.0

1.5

1.5


Molecular Sieve 13X PG

Molecular Formula: Na2O*Al2O3*(2.8±0.2) SiO2*(6-7)H2O

Applications: Used commercially for desulphurization of liquefied petroleum gas. It is also used fordehydration of gas and liquids.

Specification:

Properties

Unit

Spherical

Cylindrical

Diameter

mm

1.6-2.5

3-5

5-8

1/8″

1/16″

Static H2O adsorption

≥ % wt

26

26

26

26

26

CO2Adsorption

≥ % wt

17.5

17.5

17.5

17.5

17.5

Bulk Density

g/ml

0.67±0.02

0.66±0.02

0.66±0.02

0.62±0.02

0.62±0.02

Crush Strength

≥ N

35

80

120

65

30

Wear rate

≤ % wt

0.1

0.1

0.1

0.2

0.2

Package moisture

≤ % wt

1.0

1.0

1.0

1.5

1.5


Introduction

Molecular sieve also called zeolite, is a crystalline aluminum silicate. Its crystal structure has neat and uniform channel, aperture around a molecular level, molecular sieve only allows smaller diameter than its aperture into it, so it can sieve molecules according to their size in the mixture, so it called molecular sieve. According to molecular sieve aperture size, there are 3A, 4A, 5A, 10X, 13X. 4A molecular sieve is Na-A molecular sieve, aperture 0.4nm; if Na replaced by K, aperture 0.3nm, is 3A molecular sieve; if over 1/3 Na replaced by Ca2+, aperture 0.5nm, is 5A molecular sieve.

13X molecular sieve, also called Natrium X molecular sieve, Zeolite 13X, is a kind of alkali metal silicon aluminate, its skeleton structure composed of silica and alumina tetrahedral FAU, main crystal holes are twelvering structures. To the X type molecular sieve,if silicon aluminum ratio is not the same, crystal structures are different. 13X molecular sieve silicon aluminum ratio≈2.6-3.0 (SiO2/Al2O3≈2.6-3.0), aperture 10A, it can adsorb any molecules which critical diameteris greater than 3.64A and less than 10A, as long as the molecules can be adsorbed by 3A, 4A, 5A type molecular sieve, they also can be adsorbed by 13X molecular sieve. Furthermore, 13X molecular sieve can adsorb bigger critical diameter molecules, such as aromatic hydrocarbons and branched chain hydrocarbons.

Application

Purifying the gas in the air separation device, removal of H2O, CO2 and hydrocarbons; natural gas, liquefied petroleum gas, liquid alkanes (propane, butane) dehydration and desulphurization (removal of H2S and thiol); general gas (such as compressed air, permanent gases) depth drying; ammonia synthesis gas drying and purifying; aerosol, propellant desulfurization and deodorization; pyrolysis gas removal of CO2; catalyst carrier; water and carbon dioxide coadsorption; water and hydrogen sulfide gas coadsorption etc.

Regeneration

3A, 4A, 5A, 10X, 13X molecular sieves can be regenerated by the method of heating with purging or evacuation.

1. Moisture removal: Normally 150~320℃ dry gas such as nitrogen, air, hydrogen, saturated hydrocarbon under 0.3~0.5kg/cm through molecular sieve bed layer 3-4 hours, then filled with cold dry gas to the adsorber about 2-3 hours, isolated from the air and cooling to room temperature;

2. Removing organic matter: Used vapour instead of organic matter, then repeat step 1. Also can be regenerated by 200-350℃ through hot vapour or inert gases;

3. Removal of gas substances: by the way of decompression.