zeolite 4a molecular sieve adsorbent for dehydration of compressed air on brake systems of trucks
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zeolite 4a molecular sieve adsorbent for dehydration of compressed air on brake systems of trucks

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Chemxin supplier zeolite 4a molecular sieve adsorbent for dehydration of compressed air on brake systems of trucks

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Chemxin supplier zeolite 4a molecular sieve adsorbent for dehydration of compressed air on brake systems of trucks  


Chemxin Molecular Sieve type 4A is an alkali aluminosilicate; it is the sodium form of the Type A crystal structure. 4A molecular sieve has an effective pore opening of about 4 angstroms (0.4nm). 4A molecular sieve will adsorb most molecules with a kinetic diameter of less than 4 angstroms and exclude those larger. Such adsorb-able molecules include simple gas molecules such as oxygen, nitrogen, carbon dioxide and straight chain hydrocarbons. Branched chain hydrocarbons and aromatics are excluded.


Technical Parameter:

Model 4A
Color Light gray
Nominal pore diameter 4 angstroms
Shape Sphere Pellet
Diameter (mm) 1.7-2.5(8*12 mesh) 3.0-5.0(4*8 mesh) 1.6(1/16 inch) 3.2(1/8 inch)
Size ratio up to grade (%) ≥98 ≥98 ≥96 ≥96
Bulk density (g/ml) ≥0.70 ≥0.70 ≥0.68 ≥0.68
Wear ratio (%) ≤0.20 ≤0.20 ≤0.40 ≤0.40
Crushing strength (N) ≥35/piece ≥85/piece ≥30/piece ≥70/piece
Static H2O adsorption (%) ≥21.5 ≥21.5 ≥21.5 ≥21.5
Static methanol adsorption (‰) ≥15 15 15 15
Water content (%) ≤1.5 ≤1.5 ≤1.5 ≤1.5
Typical Chemical Formula

Na2O . Al2O3 . 2SiO2 . 4.5 H2O

SiO2 : Al2O3 ≈2

Typical Application

a) Drying and removing of CO2 from natural gas, LPG,air, inert and atmospheric gases, etc
b) Removal of hydrocarbons, ammonia and methanol from gas streams (ammonia syngas treating).
c) Special types are used in the air brake system of buses, trucks and locomotives.
d) Packed in small bags, it may be used simply as a packaging desiccant.

e) For fire escape mask

g) For filter


Regeneration:
Chemxin molecular sieve Type 4A 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 4A molecular sieve, a temperature of 250-280°C is required. A properly regenerated molecular sieve can give moisture dew points below -60°C.
The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process.
Size:
4A - Zeolite 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:
To avoid damp and pre-adsorption of organic before running, or must to be reactivated.


Chemxin supplier zeolite 4a molecular sieve adsorbent for dehydration of compressed air on brake systems of trucks

Chemxin supplier zeolite 4a molecular sieve adsorbent for dehydration of compressed air on brake systems of trucks

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Chemxin supplier zeolite 4a molecular sieve adsorbent for dehydration of compressed air on brake systems of trucks  

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Chemxin supplier zeolite 4a molecular sieve adsorbent for dehydration of compressed air on brake systems of trucks  

Chemxin supplier zeolite 4a molecular sieve adsorbent for dehydration of compressed air on brake systems of trucks  


Chemxin supplier zeolite 4a molecular sieve adsorbent for dehydration of compressed air on brake systems of trucks  

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Chemxin supplier zeolite 4a molecular sieve adsorbent for dehydration of compressed air on brake systems of trucks  

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  Tel:+86-20-39185057
  Phone: +86-13538980736
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