4×8 Mesh Molecular Sieve Type 4a Cas 1318 02 1

4×8 Mesh Molecular Sieve Type 4a Cas 1318 02 1

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.

Molecular sieve is a kind of aluminosilicate, which is mainly composed of silicon and aluminum connected by oxygen bridges to form an empty framework structure. There are many pores with uniform pore size and cavities with neat arrangement and large internal surface area in the structure. In addition, it also contains metal ions with lower electricity prices and larger ion radius and water in a combined state. Because water molecules are continuously lost after heating, but the structure of the crystal skeleton remains unchanged, many cavities of the same size are formed, and the cavities are connected by many micropores with the same diameter. Substance molecules smaller than the pore diameter are adsorbed inside the cavity. , And exclude the molecules larger than the pores, so that the molecules of different sizes and shapes are separated and play the role of sieving molecules, so it is called molecular sieve. When gas or liquid mixture molecules pass through this substance, they can be separated from each other according to different molecular characteristics. The synthetic molecular sieve is white powder, insoluble in water and organic solvents, and generally soluble in strong acids. In order to meet the needs of industrial applications, a certain amount of binder is added to the original molecular sieve powder and molded into a suitable shape, usually spherical and Bar. Molecular sieve has a small external surface area (about 1% of the total surface area), high thermal stability, and has a high internal surface area (600～1000m2/g) after dehydration, an open skeleton structure, and the pore volume accounts for 28 %～35%, can hold a considerable amount of adsorbate molecules. The inner crystal surface is highly polarized, the electrostatic field in the crystal cavity is strong, and the micropores are uniformly distributed. It is a highly efficient and highly selective adsorbent, catalyst and catalyst carrier. It is mainly used for deep drying of various gases and liquids, separation and purification of gases and liquids, catalyst carriers, etc., so it is widely used in oil refining, petrochemical industry, chemical industry, metallurgy, electronics, national defense industry, etc., at the same time in medicine, light Industry, agriculture, environmental protection and many other aspects are also increasingly widely used.

4A molecular sieve technical Index:

Applications

• The drying of refrigerants and coolers.
• Removal of water and moisture from paint and polyurethane plastics.
• Drying of natural and cracked gas.
• Removal of moisture from insulating (both air and gas-filled) glass units.
• Dehydrating of ethanol, methanol, and other polar compounds.
• Moisture removal from propylene, ethylene, and other unsaturated hydrocarbons.

Technical Advantage

• Devoted to molecular sieves R&D and manufacture;

• Over 20 years of activated carbon industry expertise;

• ISO 9001:2008 certified;

• Owns proprietary intellectual property rights;

• Powerful R&D technical strength;

• Possessing sophisticated manufacturing equipment and inspection equipment;

Product Pictures

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.