[
Molecular Sieve 4A
]
type:
Molecular Sieve 4A
model:
4A
supplier:
Pingxiang Longhua Chemical Packing Co., Ltd
brief product description:
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). 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.
specification
Typical Chemical Formula:
Na2O . Al2O3 . 2SiO2 . 4.5 H2O
SiO2 : Al2O3 ≈2
Technical Parameter:
| 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 | ≥96 | ≥96 |
Bulk density | g/ml | ≥0.66 | ≥0.66 | ≥0.66 | ≥0.66 |
Wear ratio | % | ≤0.20 | ≤0.40 | ≤0.20 | ≤0.20 |
Crushing strength | N | ≥30/cm | ≥45/cm | ≥30/piece | ≥70/piece |
Static water adsorption | % | ≥20.5 | ≥20.5 | ≥21 | ≥21 |
Static methanol adsorption | % | ≥15 | ≥15 | ≥15 | ≥15 |
Water content, as shipped | % | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
Regeneration:
Molecular Sieve 4A can be revived for reuse and the required factors for revival are temperature and pressure. To remove the adsorbed moisture and other materials, the revival condition shall be set up considering the features of target material and processing environment. To remove moisture from a 4A molecular sieve, a temperature of 250-280ºC is required. A properly regenerated molecular sieve can give moisture dew points below -100ºC.
Package:
30kg or 25kg carton box, inside bag vacuum packing
Or 120kg-150kg iron drum, inside bag vacuum packing
Other packages request by the customers.
Attention:
Do not unpack the goods until using, avoid of exposure in air for a long time. Should be stuffed as rapid as possible at filling, or it should be reactivated before running.
Typical Applications:
- Naphtha drying
- Drying of Aromatics
- Drying of liquid hydrocarbons
- Purification of gas for catalyst regeneration
- Isomerization feed drying
- Natural gas drying, Removing Co2
- Drying of liquefied petroleum gas, liquefied natural gas
- Kerosene and jet fuel drying
- Removing CO2 from steam cracked gas
- Treatment of acetic acid process gases
- NH3 synthesis gas and recycle gas drying and purifying
- Solvent drying
- Drying and purifying H2
- Nobel gas drying
- Drying of instrumental air