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Molecular Sieves Are Materials with Uniform Pores The diameter of the molecular sieve is angstroms or nanometers (nm). Molecular sieves can be microporous (2nm), macroporous (50 Ⅰ. Molecular sieve powder adsorbent Molecular sieve powder adsorbent can separate fluids according to molecular size and polarity. For the secondary fine particles of hydrocarbons, straight molecules enter the pores and are adsorbed, and branched molecules cannot enter the pores and pass through the sieve bed. Molecular sieves play an important role in unit processes such as dehydration and purification, as well as unit operations such as drying and adsorption. Catalysis is the application…

What Are the Differences Between 3A, 4A, and 5A Molecular Sieves? What is the difference between 3A, 4A, and 5A molecular sieves? Are the three types of molecular sieves the same purpose? What are the factors related to the working principle? Which industries are they used in? Ⅰ. The chemical formula of 3A, 4A, and 5A molecular sieves 1. Chemical formula of 3A molecular sieve: 2. Chemical formula of 4A molecular sieve: 3. Chemical formula of 5A molecular sieve: Ⅱ. The aperture of 3A, 4A, and 5A molecular sieves The working principle of molecular sieves is mainly related to the…

Main Components of Carbon Molecular Sieve and Principles of Nitrogen Production Carbon molecular sieve is a new type of adsorbent developed in the 1970s. It is an excellent non-polar carbon material. Nitrogen-making carbon molecular sieve is used to separate air and enrich nitrogen. The cryogenic high-pressure nitrogen production process has the advantages of low investment cost, fast nitrogen production speed, and low nitrogen cost. Therefore, it is currently the preferred pressure swing adsorption and nitrogen-rich adsorbent for air separation in the engineering industry. This nitrogen is used in the chemical industry, oil and gas industry, electronics industry, food industry, coal…

Regeneration Method and Application of 4A Molecular Sieve In the laboratory, it can be activated and dehydrated by drying in a muffle furnace at a temperature of 350°C and drying under normal pressure for 8 hours (if there is a vacuum pump, it can be dried at 150°C for 5 hours). The activated molecular sieve is cooled in the air to about 200°C (about 2 minutes) and stored in a desiccator immediately. If possible, use dry nitrogen for maintenance during the cooling and storage process to avoid re-adsorption of water vapor in the air. The old molecular sieve after use…

Application and Performance of 3A Molecular Sieve 3A molecular sieve is an alkali metal aluminosilicate, and sometimes, it is also called 3A zeolite molecular sieve. The pore size of the molecular sieve 3A is 3Å. It is mainly used for adsorbing water and does not adsorb any molecules with a diameter greater than 3Å. According to the characteristics of industrial applications, molecular sieve has the ability of fast adsorption speed, many regeneration times, crushing strength and anti-pollution, which improves the utilization efficiency of molecular sieve and prolongs the service life of molecular sieve. A molecular sieve is an adsorbent material…

4A Molecular Sieve Can Be Used As a Molding Agent for Soap The pore size of 4A molecular sieve is 4A, which can adsorb any molecule with a diameter smaller than 4A. The factors that affect the actual performance of 4A molecular sieve generally include air flow, air temperature, air quality, air flow rate, purifier design, and purifier bed height and diameter than wait. 1. Precautions for the operation of 4A molecular sieve 4A molecular sieve should pay attention to the packaging of 4A molecular sieve during operation. Since 4A molecular sieve is very easy to absorb moisture in the…

What Industries Can the Molecular Sieve Be Used In? What industries can molecular sieves be used in? What is the role of the molecular sieve? What benefits does the molecular sieve bring to various industries? Next, Pingxiang Naike Chemical Equipment Packing Co., Ltd. can explain to you the application of this product in various fields. 1. The molecular sieve used in industrial oxygen production and drying fields In recent years, hydrothermal synthesis is the main manifestation of the technological development of molecular sieve adsorbents which are used for drying solvents in industrial oxygen production and drying fields. On the basis…

What Are Characteristics of the 4A Molecular Sieve? Due to the large pore structure and particle size of 4A molecular sieve crystals, the adsorption performance of the 4A molecular sieve is very strong. For the adsorption of non-ionic surfactants, 4A molecular sieve is 3 times that of NTA (secondary aminotriacetate) and sodium carbonate, and 5 times that of sodium tripolyphosphate (STPP) and sodium sulfate, so this property is used for agglomeration molding. It would make sense to produce more concentrated surfactants in high strength detergents to produce products with good wash and flow properties. 1. The 4A molecular sieve has…

What Are the Applications of Molecular Sieve in Petrochemical Industry? In the more than half a century since the advent of molecular sieves, the technologies have been mainly used to meet the needs of three traditional fields, first of all, in the catalytic process of traditional petroleum and chemical industry, then in the ion exchange process required for the treatment of waste gas and waste liquid in the daily necessities industry, coal mines and radioactive industries, and so on. The application of molecular sieves in the petrochemical field continues to expand, which promotes the rapid development of the national economy.…

Method for Strengthening Performance of Molecular Sieve Molecular sieves are materials with uniformly sized pores (very small pores). The size of these pores is similar to the size of small chemical molecules. Therefore, large molecules cannot enter the molecular sieve or be adsorbed, while small molecules can. As a mixture of molecules migrates and passes through a fixed bed of porous semisolid matter that is called a sieve (or matrix), the components with the highest molecular weight (which cannot enter the molecular pores) leave the bed first and then are followed by sequentially smaller molecules. Some molecular sieves are used…

The Role of 4A Molecular Sieve in the Daily Chemical Industry According to different pore sizes and uses, there are 3A molecular sieves, 4A molecular sieves, 5A molecular sieves, 10X molecular sieves, 13X molecular sieves, 13XAPG molecular sieves, oxygen-enriched molecular sieves, XH series refrigerants, and special types for insulating glass. Among them, 4A molecular sieve is suitable for the daily chemical industry. What are the functions of 4A molecular sieve in the daily chemical industry? 1. 4A molecular sieve has adsorption to surfactants Due to the pore structure of the 4A molecular sieve crystal and the large specific surface area…

The Shape and Performance of Solid Adsorbent of Activated Alumina 1. Shape and performance of activated alumina Solid adsorbents are used in reactors with different particle shapes. Early adsorbents did not pay attention to the shape, and often only crushed the bulk material, and then screened out the particles with uneven particle size and irregular shape for use. Due to the indeterminate shape, the airflow distribution during use is very uneven, and the adsorption reaction is affected. The sieved small particles and powder materials cannot be used and discarded, thus causing a lot of waste. With the continuous improvement of…