Alkane Drying 4A Molecular Sieve Desiccant

 Industrial Grade Alkane Drying 4A Molecular Sieve Desiccant
 
Product introduction
 
 
Molecular sieve 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.
 
 
The 4A molecular sieve adsorbent has a 4 angstrom (4A) pore size; this means that any molecule that is larger than the 4 angstrom pores will not be adsorbed. The 4A molecular sieve is composed of the sodium type of A crystalline structure. For a 4A molecular sieve, the sequence rate that adsorption occurs is Ar, Kr, Xe, NH3, CO, CO2, C2H2, CH3Br, C2H4, CH3OH, CH3CN2, CS2, and CH3CL.
 
Due to the crystalline structure, molecular sieves that have a 4 angstrom pore size have a very high rate of adsorption and properties—including an increased resistance to outside contamination and crushing strength stronger than other desiccants—that promote a longer life for products treated by the sieve. The most common use for the 4A molecular sieve is to remove water and moisture from materials that are in gas and liquid form.
 
4A molecular sieve technical Index:

 
Scope of application
Deep drying of air, Natural gas, alkane and refrigerant.
Generation and purification of argon.
Static dehydration of electronic element, pharmaceutical and unstable materials.
Desiccant for paint, dope and foul etc.
Type 4A molecular sieve is typically used in regenerable drying systems to remove water vapor or contaminants which have a smaller critical diameter than four angstroms.
 
Common model
 
Molecular sieve models commonly used in the gas industry;
Type A: Potassium A (3A), Sodium A (4A), Calcium A (5A), Type X: Calcium X (10X), Sodium X (13X)
Type Y: Sodium Y, Calcium Y
 
Product Pictures

 
 
Product Performance
 
Molecular sieve has strong moisture absorption capacity and is used for gas purification treatment. Avoid direct exposure to the air during storage. Molecular sieves that have been stored for a long time and have absorbed moisture should be regenerated before use. Molecular sieve avoids oil and liquid water. Try to avoid contact with oil and liquid water when in use. The gases to be dried in industrial production include air, hydrogen, oxygen, nitrogen, argon, etc. Two adsorption dryers are used in parallel, one works, and the other can be regenerated. Alternate work and regeneration to ensure continuous operation of the equipment. The dryer works at 8-12°C, and regenerates when heated to 350°C. Different specifications of molecular sieve have slightly different regeneration temperatures. Molecular sieves have a good catalytic effect on certain organic gas phase reactions.
 
Product Features
1. Adsorption is selective.
⑴ Choose the adsorption according to the different molecular diameter.
⑵ Select the adsorption according to the polarity of the molecule.
⑶ Selective adsorption according to the degree of molecular unsaturation.
⑷ Select adsorption according to different boiling points.
2. It has low concentration and high adsorption characteristics at higher temperature.
3. Cation exchange characteristics.
4. Catalytic properties.
⑴ The heterogeneous catalytic reaction is carried out on the surface of the catalyst. When the molecular sieve is used as a catalyst or carrier, the catalytic reaction is to catalyze the substances entering the micropores of the molecular sieve.
⑵ Only produce products whose molecules are smaller than the pores of the molecular sieve.
⑶ Because of the large surface area, it has high activity.
⑷ Strong resistance to poisoning and high thermal stability.
⑸ When used as a carrier, the metal catalyst can be evenly distributed on the inner surface of the molecular sieve, so it is easy to prepare a catalyst with good repeatability.
 
 
Factory information
Shanghai Xuefeng Molecular Sieve Co., Ltd. adopts the most advanced and fully automated assembly line molecular sieve production technology in China, and has positions for dosing, kneading, extrusion, drying, roasting and packaging. The main equipment includes pelletizing machine, hardening cylinder, kneader, extruder, belt dryer, rotary roasting furnace, vibrating screen, scale and other ancillary facilities. The production process parameters are all automatically controlled, and there is no paper recorder attached. , The results of the process parameters are comprehensively recorded, and at the same time, the operators of each position shall manually record the parameters every hour to ensure the traceability of the operation process. At the same time, the company pays attention to the inspection of intermediate products, and has set up sampling points for intermediate products in the ingredients, extrusion molding, and drying positions to ensure that the intermediate products meet the specified quality requirements.