Water Absorbent Molecular Sieve 4A Desiccant

• Shape: Sphere
• Drying Method: Static Drying
• Kind: Montmorillonite Desiccant
• Model NO.: 4A
• Sorbent: Molecular Sieves
• Desiccant: Chemical Desiccant
• Transport Package: Steel Drum, Carton Drum, Carton Box, Kraft Bag.
• Specification: 1.7-2.5mm, 3.0-5.0mm, 1.6mm, 3.2mm
• Trademark: XINGFENG
• Origin: China
• HS Code: 3824999990
• Production Capacity: 5000 Mt/Year

Product Description

Water Absorbent Molecular Sieve 4A Desiccant

Molecular Sieve type 4A is an alkali alumino silicate; 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). XINGFENG type 4A molecular sieve will adsorb most molecules with a kinetic diameter of less than 4 angstroms and exclude those larger. Such adsorbable molecules include simple gas molecules such as oxygen, nitrogen, carbon dioxyde and straight chain hydrocarbons. Branched chain hydrocarbons and aromatics are excluded.

Typical Chemical Formula
   Na₂O Al₂O₃ 2.0SiO₂ 4.5H₂O
    SiO₂: Al₂O₃ ≈2 

Technical Parameter

Item	Unit	Technical data
Shape		Pellet		Sphere
Diameter	mm	1.5-1.7	3.0-3.3	1.7-2.5	3.0-5.0
Size ratio up to grade	%	≥98	≥98	≥98	≥98
Bulk density	g/ml	≥0.66	≥0.66	≥0.70	≥0.70
Wear ratio	%	≤0.20	≤0.40	≤0.20	≤0.20
Crushing strength	N	≥30/cm	≥45/cm	≥30/p	≥70/p
Static water adsorption	%	≥21	≥21	≥21	≥21
Static methanol adsorption	%	≥15	≥15	≥15	≥15
Water content, as shipped	%	≤1.5	≤1.5	≤1.5	≤1.

Application 
 Drying and removing of CO₂ from natural gas, LPG, air, inert and athmospheric gases, etc.
Removal of hydrocarbons, ammonia and methanol from gas streams 
(ammonia syn gas treating)
Special types are used in the air break units of buses, trucks and locomotives.
Packed in small bags, it may be used simply as a packaging desiccant.

Regeneration
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 -100°C. 
The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process

Size
4A - Zeolites 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 1.6", 3.2".

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

Packing and Shipping:

Package Type	Container Load Capacity		Delivery time	Quality Insurance
	20 GP	40 GP
Steel drum, 150kg/drum	12000 kg	24000 kg	Within 7-10 days	Chinese National Standard; Offer quality assurance as request.
Paper drum, 25kg/drum	9000 kg	18000 kg
Paper box, 25kg/box	13500 kg	27000 kg