The 3A molecular sieve is an alkali metal alumino-silicate, a potassium form for the type A crystal structure. Type 3A has an aperture of about 3 angstroms (0.3nm). It does not absorb molecules larger than 3A, and is primarily used to absorb water. The Dohntec molecular sieve has a quick absorption speed, high crushing resistance, excellent pollution resistance, more regenerative cycles and a long service life. It is an ideal desiccant for deep desiccation, refining, and polymerization of the gaseous phase and liquid phase in the petrochemical industry.
Typical Chemical Formula
0.45 K2O. 0.55 Na2O. Al2O3. 2 SiO2. nH2O
Technical Parameters | Item | Index |
| Appearance | Strip | Spherical |
| Diameters mm | 1.5-1.7 | 3.0-3.3 | 1.7-2.5 | 3.0-5.0 |
| Size ratio to grade % | ≥98 | ≥98 | ≥96 | ≥96 |
| Bulk density g/ml | ≥0.60 | ≥0.60 | ≥0.60 | ≥0.60 |
| Abrasion loss % | ≤0.20 | ≤0.25 | ≤0.20 | ≤0.20 |
| Crushing strength N | ≥45/cm | ≥60/cm | ≥45/p | ≥45/p |
| Static water absorption % | ≥20 | ≥20 | ≥20 | ≥20 |
| Water in packing % | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
Typical Application
1. Drying of unsaturated hydrocarbons (e.g. ethylene, propylene, butadiene)
2. Cracked gas drying
3. Drying of natural gas: if COS minimization is essential, or a minimum co-adsorption of hydrocarbons is required.
4. Drying of highly polar compounds, such as methanol and ethanol.
5. Drying of liquid alcohol with Z3-01 / 1-2 mm beads.
6. Static, (non-regenerative) dehydration of insulating glass units, whether air filled or gas-filled.
7. Drying of refrigerants (e.g. R22, R134a)
Size
3A - 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”.
Packaging
25kgs or 30kgs export carton box, inside an airtight aluminum foil bag or a 55 gallon iron drum, inside airtight sacks
Caution
Do not unpack the goods until they are ready for use, and avoid prolonged exposure to air.
When filling, they should be packed as quickly as possible.
A 4A molecular sieve is an alkali alumino-silicate, and is the sodium form of the Type A crystal structure. This molecular sieve has an aperture of about 4 angstroms (0.4mm) and does not absorb any molecules large than 4A, including propane. It absorbs water, methanol, ethanol, sulfated hydrogen, sulfur dioxide, carbon dioxide, ethylene, and propylene.
Typical Chemical Formula
Na2O. Al2O3. 2 SiO2. n H2O
Technical Parameters | Item | Index |
| Appearance | Strip | Spherical |
| Diameters mm | 1.5-1.7 | 3.0-3.3 | 1.7-2.5 | 3.0-5.0 |
| Size ratio to grade % | ≥98 | ≥98 | ≥96 | ≥96 |
| Bulk density g/ml | ≥0.60 | ≥0.60 | ≥0.60 | ≥0.60 |
| Abrasion loss % | ≤0.20 | ≤0.25 | ≤0.20 | ≤0.20 |
| Crushing strength n | ≥30/cm | ≥45/cm | ≥60/p | ≥70/p |
| Static water absorption % | ≥20.5 | ≥20.5 | ≥20.5 | ≥20.5 |
| Water in packing % | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
Typical Applications
1. Deep drying of air, natural gas, alkane and refrigerants.
2. Generation and purification of argon.
3. Static dehydration of electronic components, physical packaging, and perishable materials.
4. Dehydration for paint, fuel.
Size of 4A
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”.
Packaging
25kgs or 30kgs export carton box, inside an air aluminum foil bag or 55 gallon iron drum, inside an airtight sack.
Caution
Do not unpack the goods until they are ready for use, and avoid prolonged exposure to air.
When filling, they should be packed as quickly as possible.
The 5A type of molecular sieves are a small oxygen enrichment molecular sieve specially designed for medial or healthy oxygen generators such as a mini PSA plant for medical applications. This molecular sieve features a high purity of oxygen concentration and a long service life, making it ideal for use in medical care industries.
Technical Parameters | Item | index |
| appearance | Irregular granule |
| Size mm | 0.4-0.8 |
| Water absorption % | ≥23 |
| CO2 air disposal NL/g | ≥17.5 |
| Oxygen output NL/h.kg | ≥40 |
Assuming a double bed oxygen concentration process (1.3kg molecular sieve each bed, size 0.5-0.8mm), absorption pressure at 0.18Mpa, normal pressure desorption, air flow rate at 40 NL/Minute. The performance is shown below:
| Oxygen output NL/minute | Oxygen purity % | Output quantity NL/Kg pure oxygen |
| 2 | 95 | 0.73 |
| 3 | 93 | 1.06 |
| 4 | 89 | 1.37 |
Packaging
25kgs or 30kgs export carton box, inside an air aluminum foil bag or 55 gallon iron drum, inside an airtight sack.
Caution
Do not unpack the goods until they are ready for use, and avoid prolonged exposure to air.
When filling, they should be packed as quickly as possible.
The 13X molecular sieve is the sodium form of the X crystal and has the same aperture of type A crystals. It absorbs any molecules less than 10A, and is mainly used as a catalyst carrier, co-absorption of CO2 and H2O, and co-absorption of H2O and H2S. It is also used as a desiccant for medical and air compressors.
Typical Chemical Formula
Na2O. Al2O3. 2.5 SiO2. n H2O
Technical Parameters | Item | Index |
| Appearance | Strip | Ball |
| Diameter mm | 1.5-1.7 | 3.0-3.3 | 1.0-1.6 | 3.0-5.0 |
| Size ratio up to grade % | ≥98 | ≥98 | ≥96 | ≥96 |
| Bulk density g/ml | ≥0.54 | ≥0.54 | ≥0.60 | ≥0.60 |
| Wear ratio% | ≤0.20 | ≤0.25 | ≤0.20 | ≤0.20 |
| Crushing strength n | ≥30/cm | ≥45/cm | ≥10/p | ≥60/p |
| Water absorption % | ≥25 | ≥25 | ≥25 | ≥25 |
| Co2 air disposal nl/g | ≥14 | ≥14 | ≥14 | ≥14 |
| Water in packaging % | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
Typical Application
1. Removal of CO2, moisture and other gases from the air (air pre-purification).
2. Dehydration and desulfuration of natural gas, liquid petrol gas and liquid alkane.
3. Deep drying for common gas.
Size
13X - 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”.
Packaging
25kgs or 30kgs export carton box, inside an air aluminum foil bag or 55 gallon iron drum, inside an airtight sack.
Caution
Do not unpack the goods until they are ready for use, and avoid prolonged exposure to air.
When filling, they should be packed as quickly as possible.
The 13X ACS molecular sieve is specially designed for co-absorption of CO2 and H20 for air cryo-separation industries. It features a large capacity and a quick absorption rate for the removal of CO2 and H2O in order to prevent gelation, making it suitable for any size air cryo-separation plant.
Typical Chemical Formula
Na2O.Al2O3.2.45SiO2.6.OH2O
Technical Parameters | Item | Index |
| appearance | strip | ball |
| Diameter mm | 1.5-1.7 | 3.0-3.3 | 2.0-3.0 | 3.0-5.0 |
| Size ratio up to grade % | ≥98 | ≥98 | ≥96 | ≥96 |
| Bulk density g/ml | ≥0.54 | ≥0.54 | ≥0.60 | ≥0.60 |
| Wear ratio% | ≤0.20 | ≤0.25 | ≤0.20 | ≤0.20 |
| Crushing strength N | ≥30/cm | ≥45/cm | ≥30/p | ≥70/p |
| Water absorption % | ≥25 | ≥25 | ≥25 | ≥25 |
| CO2 air disposal NL/g | ≥18 | ≥18 | ≥18 | ≥18 |
| Water in packaging % | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
Typical Application
Removal of H2O and CO2 from air for air cryo-separation applications.
Packaging
25kgs or 30kgs export carton box, inside an air aluminum foil bag or 55 gallon iron drum, inside an airtight sack.
Caution
Do not unpack the goods until they are ready for use, and avoid prolonged exposure to air.
When filling, they should be packed as quickly as possible.
Insulating glass desiccant can deeply co-absorb resident moisture and organics in insulating glass, keeping it clear and transparent, even at low temperatures. The desiccant also successfully avoids uneven air pressure placed on the glass, usually caused by seasonal and day/night temperature changes. This resolves common problems that typically face insulating glass desiccant distortion and cracking caused by expanding and shrinking, ensuring the long lifespan of the insulating glass.
Technical Parameters | Item |
| ZK-2 |
|
| ZK-3 |
|
| Ball size mm | 0.5-1.0 | 1.0-1.6 | 1.5-2.0 | 0.5-1.0 | 1.0-1.6 | 1.5-2.0 |
| Bulk density g/ml | ≥0.74 | ≥0.74 | ≥0.74 | ≥0.74 | ≥0.74 | ≥0.74 |
| Size ratio up to grade % | ≥98 | ≥98 | ≥98 | ≥98 | ≥98 | ≥98 |
| Water absorption % | ≥19 | ≥19 | ≥19 | ≥19 | ≥19 | ≥19 |
| Wear ratio % | ≤0.20 | ≤0.20 | ≤0.20 | ≤0.20 | ≤0.20 | ≤0.20 |
| H2O absorption speed Mg/g.min | ≤0.60 | ≤0.60 | ≤0.60 | ≤0.60 | ≤0.60 | ≤0.60 |
| Crush strength N/p | ≥7 | ≥14 | ≥20 | ≥7 | ≥14 | ≥20 |
| Absorption Temp.℃ | ≥35 | ≥35 | ≥35 | ≥30 | ≥30 | ≥30 |
| Nitrogen absorption Mg/g | ≤2 | ≤2 | ≤2 | ≤2 | ≤2 | ≤2 |
| Dew point℃ | ≤-60 | ≤-60 | ≤-60 | ≤-60 | ≤-60 | ≤-60 |
| Organic absorption | no | no | no | yes | yes | yes |
| ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
