8*12 Mesh 680KG/M3 3A Molecular Sieve Adsorber

8*12 Mesh 680KG/M3 3A Molecular Sieve Adsorber

Product Description

Molecular Sieve 3A is an alkali metal alumino-silicate; it is the potassium form of the type A crystal structure. Type 3A has an effective pore opening of about 3 angstroms (0.3nm). This is large enough to allow in moisture, but excludes molecules such as unsaturated hydrocarbons which can potentially form polymers; and this maximizes lifetime when dehydrating such molecules

3A molecular sieve Adsorbent technical Index:

Scope of application

1. Used in oil gas, gas streams of unsaturated hydrocarbon material dehydration of 3A molecular sieve professional;

2. Drying of highly polar compounds, such as methanol and ethanol. It is also used for dehydration of liquid alcohol and solvents;

3. Used for professional kerosene and jet fuel drying;

4. Application of 3a molecular sieve in isopropanol dehydration; Used for natural gas dehydration and prevent the formation of COS;

5. Used in deep desiccation of cracked petroleum gases, such as ethylene, propylene, butadiene, acetylene and natural gas, and of polar liquid, such as ethanol, LPG and solvent;

6. Static,(non-regenerative) dehydration of insulating glass units, whether air filled or gas-filled;

7. Drying of refrigerants; dehydration of food-grade carbon dioxide;

introduction

Commonly used adsorbents include various activated carbon adsorbents and metal and non-metal oxide adsorbents (such as silica gel, alumina, molecular sieve, natural clay, etc.) using carbon as raw materials.

The main indicators to measure the adsorbent are: adsorption capacity for different gas impurities, abrasion rate, loose bulk density, specific surface area, crush strength, etc. It is used to filter out poisonous gas, refine petroleum and vegetable oil, prevent viruses and molds, recover gasoline in natural gas, and decolorize sugar and other colored substances.

The adsorbents commonly used in industry are: silica gel, activated alumina, activated carbon, molecular sieves, etc. In addition, there are adsorption materials developed for selective adsorption of certain components. The success of gas adsorption and separation largely depends on the performance of the adsorbent. Therefore, the choice of adsorbent is the primary issue in determining the adsorption operation.

Zeolite molecular sieve is also called synthetic zeolite or molecular sieve. Its chemical composition is as follows: [M2(Ⅰ)M(Ⅱ)]O.Al2O3.nSiO2. mH2O where M2(Ⅰ) and M(Ⅱ) are monovalent and Divalent metal ions, mostly sodium and calcium, n is called the silicon-to-aluminum ratio of zeolite. Silicon mainly comes from sodium silicate and silica gel, while aluminum comes from sodium aluminate and Al(HO)3. They are combined with sodium hydroxide. The colloid prepared by the reaction of the aqueous solution becomes a zeolite after drying, generally n=2~10, m=0~9.

Zeolite is characterized by the function of molecular sieve, it has uniform pore size, such as 3A0, 4A0, 5A0, 10A0 pores. The 4A0 zeolite with 4A0 pore size can adsorb methane and ethane, but not normal alkanes with more than three carbons. It has been widely used in gas adsorption separation, gas and liquid drying, and separation of normal isoparaffins.

Carbon molecular sieve

In fact, it is also a kind of activated carbon. The difference between it and the general carbonaceous adsorbent is that its pore diameter is evenly distributed in a narrow range, and the pore diameter is equivalent to the diameter of the separated gas molecule. The specific surface area generally accounts for more than 90% of the total surface area of the carbon molecular sieve. The main distribution form of the pore structure of carbon molecular sieve is: the diameter of the large pores communicate with the outer surface of the carbon particles, the transition pores branch out from the large pores, and the micropores branch out from the transition pores. In the separation process, the macropores mainly act as transport channels, while the micropores act as molecular sieves.

There are carbonization method, gas activation method, carbon deposition method and impregnation method for preparing carbon molecular sieve from coal. Among them, the carbonization method is the simplest, but to produce high-quality carbon molecular sieves, these methods must be used in a comprehensive manner.

Carbon molecular sieve has been successful in the field of air separation to produce nitrogen, and it also has broad prospects in other gas separation.

Product Pictures

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.

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.