2.0mm 4×8 Molecular Sieve Uop Type 3a For Gas Drying

Product description

WHAT IS MOLECULAR SIEVE?

Molecular sieves are synthetic zeolite materials engineered with pores of precise and uniform structure and size. This allows them to preferentially adsorb gases and liquids based on molecular size and polarity. Zeolites are naturally existing, highly porous crystalline solids, belonging to the class of chemicals known as aluminosilicates.

There are four main types of molecular sieves: 3A, 4A, 5A, and 13X. The type is dependent on the molecule’s chemical formula, and it determines the pore size of the molecular sieve. A molecular sieve works by adsorbing gas or liquid molecules that are smaller than the effective diameter of its pores while excluding those molecules that are larger than the openings.

A practical example of the function of molecular sieves is to dry ethanol. Because of the azeotrope formed when it is mixed with water, normal distillation of ethanol can only achieve a purity of 96% ethanol – the remaining 4% being water. For ethanol to be considered fuel grade, it has to be greater than 99% dehydrated. To achieve this level of purity, a 3A molecular sieve, designed specifically with 3 Angstrom-sized pores, is used to absorb the water molecules, while the larger ethanol molecules are excluded. As there is no competition for adsorption, this process easily dehydrates ethanol to the desired level of purity so that it can be considered fuel grade.

The size of the pores of both Type A and Type X molecular sieves is closely controlled during the manufacturing process. Sodium, calcium, and potassium ions can be exchanged with one another in the molecule to regulate the size of the pore opening. This allows for preferential adsorption of gas and liquid molecules. To get a sense of how this works, try to imagine a parking garage: the height of your vehicle is 7′, but the roof of the garage is only 6’8″. As hard as you may try, you are not going to get your vehicle into the garage. The same principle applies to the adsorption of molecules in the pores of a molecular sieve. This allows scientists and engineers to design systems that can separate chemicals on a molecular level.

Many people do not realize all of the applications of molecular sieves that help to improve our everyday lives. Almost every imaginable product has been touched by molecular sieve in some way. From steel production, insulated glass windows, fuel ethanol, and oxygen for breathing apparatuses, to the air conditioning filter cores in our cars, molecular sieves are a part of our lives every day.

1. 3A molecular sieve is an alkali metal aluminosilicate, sometimes it is also called KA molecular sieve or 3A zeolite molecular sieve. Silicon to aluminum ratio: SiO2/Al2O3≈2, CAS (Chemical Substance Registration Number) No. 308080-99-1.

2. Molecular formula: 0.4K2O 0.6Na2O Al2O2 2.OSiO2 4.5H2O

3A molecular sieve technical Index:

Application

Drying of various liquids (such as ethanol)

N2——H2 mixed gas drying

Drying of refrigerant

Drying of air in hollow glass

Drying of natural gas and methane gas

Drying of unsaturated hydrocarbons and cracked gas, ethylene, acetylene, propylene, butadiene.

Store

Room temperature, relative humidity not greater than 90% indoors: avoid water, acid, alkali, isolate air, and store in airtight.

Product Pictures

Regeneration

Removal of water: dry gas such as nitrogen, air, hydrogen, saturated hydrocarbon, etc. can be used to heat to 150-320℃ and pass into the molecular sieve bed under 0.3-0.5kg/m2 pressure for 3-4 hours, and then to the adsorber Pass in dry cold air for about 2-3 hours, isolate the air and cool to room temperature.

Removal of organic matter: the adsorbate can be replaced from the molecular sieve with water vapor, and then heated to (1). The regeneration can also be regenerated by superheated steam or inert gas at 200-350℃. Exposure to gases that produce explosive mixtures).

The degassed substances can be regenerated by the decompression removal method.

Package

Packed in iron drums, (according to the product model) net weight 125kg, 135kg, 140kg, or according to user needs.

Company information

Shanghai Xuefeng Molecular Sieve Co., Ltd. is a professional manufacturer of molecular sieve products, which belongs to Zhengzhou Xueshan Industrial Co., Ltd. Located in Shanghai Xinzhuang Industrial Zone, covering an area of 24 acer, it has nearly 7000 square meters of most standardized workshop, production equipment and testing instruments. At present, there are a series of stereotyped products such as type A (3a, 4a, 5a), X and so on, as many as 25 varieties have been put on the market.

The products are widely used in natural gas, oil refining, petrochemical, steel, light industry, air separation oxygen production and alcohol dehydration and other industrial fields, and have many successful examples in the deep drying, purification and separation of large and medium-sized industrial equipment at home and abroad. Xuefeng not only has many users in China, but also exports its products to developed countries such as Europe and the United States.

Shanghai Xuefeng has a certain scale of production, with three assembly lines with an annual output of more than 3000 tons of molecular sieves, and has passed the ISO9001-2000 standard Lloyd's quality management system certification, and Xueshanguan is a registered trademark of the product. In order to meet the needs of users, another automatic assembly line with an annual output of 6000 tons was installed in 2008.

Shanghai Xuefeng has introduced and digested the production technology of similar foreign products. The raw powder produced by our own Xueshan Industrial Company is added with clay strengthening agent. After kneading, roasting and activation, the appearance is beige or light gray. We can also produce strip and ball products of different specifications according to customer requirements. In accordance with the domestic (industry) standards of molecular sieves and referring to the main technical indicators of similar foreign products, Shanghai Xuefeng Molecular Sieve has formulated the technical standards for molecular sieve enterprises (QB/SF2690-99).The main testing items and indicators are shown in the sample. At the same time, eight types of molecular sieve products have been tested by Shanghai Research Institute of Chemical Industry ( the domestic molecular sieve national standard and industry standard drafting unit ) and other authoritative organizations, and all quality indicators have reached or exceeded relevant domestic and foreign technical standards.