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What is the Difference Between Molecular Sieve and Desiccant?

What is the Difference Between Molecular Sieve and Desiccant? Ⅰ. What is the molecular sieve desiccant? Some people may think that the two are the same thing. This is because there is a substance that we call the molecular sieve desiccant. It is a synthetic desiccant and has a strong adsorption effect on water molecules. The pore size of the molecular sieve is controlled by different processing techniques. In addition to absorbing water vapor, it can also absorb other gases. Under high temperature conditions above 230°C, water molecules can still be maintained well. But molecular sieve and desiccant are two…

The Difference Between 3A Molecular Sieve and Type B Desiccant for Insulating Glass

The Difference Between 3A Molecular Sieve and Type B Desiccant for Insulating Glass 1. What is the 3A molecular sieve for insulating glass? Molecular sieve (also known as synthetic zeolite) is a kind of aluminosilicate microporous mesh crystal material, composed of SiO2 and Al2O3 tetrahedrons, with uniform pore size and large specific surface area. There are metal cations (such as Na+, K+, Ca2+, etc.) in the molecular sieve lattice to balance the excess negative charges in the tetrahedron. Different types of molecular sieves have different pore sizes or shapes and can be used to separate a variety of different molecules.…

What is the Role of Molecular Sieve in the Oxygen Generator?

What is the Role of Molecular Sieve in the Oxygen Generator? Medical oxygen generators are based on pressure swing adsorption technology, a new type of equipment that extracts oxygen from the air. What is the role of molecular sieve oxygen generators? 1. Oxygen production process of molecular sieve It uses molecular sieve physical adsorption and desorption technology to fill the oxygen generator with molecular sieves, which can absorb nitrogen in the air when pressurized, and the remaining unabsorbed oxygen is collected, and after purification treatment, it becomes high-purity oxygen. The specific working process of molecular sieve is that compressed air…

Activation Method of 4A Molecular Sieve

Activation Method of 4A Molecular Sieve 4A molecular sieve has a wide range of applications. It is not only a new type of high-performance microporous adsorbent, but also a catalyst carrier with excellent performance. As a desiccant, molecular sieve has strong drying efficiency and can be used to dry a variety of gases and liquids. Molecular sieves cannot be used to dry unsaturated compounds because they have a strong adsorption effect on unsaturated molecules, polar molecules and easily polarized molecules. Molecular sieve has a small water absorption capacity. If the material to be dried contains too much water, it should…

Performance of Molecular Sieve

Performance of Molecular Sieve 1. What is a molecular sieve? Molecular sieve is a synthetic hydrated aluminosilicate (bubble zeolite) or natural zeolite with the function of screening molecules. Molecular sieves have a uniform microporous structure, and these tiny pores have a uniform diameter, which can adsorb molecules smaller than their diameter into the pores, thereby separating molecules with different diameters, different polarities, different boiling points, and different saturations, so that it has the function of “sieving” molecules. 2. Types of molecular sieve Molecular sieves are different according to the pore size, molecular sieve types are A type: potassium A (3A),…

What Should I Pay Attention to when Storing Molecular Sieve Powder?

What Should I Pay Attention to when Storing Molecular Sieve Powder? For molecular sieve powder, many people do not know it very well. In fact, it is artificially synthesized and has many advantages, such as purifying exhaust gas. Therefore, it is now used in many fields. Many people do not know precautions when storing and using molecular sieve powder, some problems may arise in this way. Only when we understand the storage method correctly can we play the excellent role of molecular sieve powder. The following will explain specifically what to pay attention to when storing molecular sieve powder and…

How Do Molecular Sieves Remove Water

How Do Molecular Sieves Remove Water Molecular sieves have a large surface area, generally 600-1000 square meters per gram. It has a strong adsorption capacity for polarized and polarizable molecules. Water is a strongly polarized molecule, and its molecular diameter is smaller than that of a molecular sieve which is easily absorbed by a molecular sieve. Molecular sieves are best for water removal as in the high temperature above 230℃, they can still hold water molecules well. What Is Molecular Sieve? A molecular sieve is a kind of crystalline aluminosilicate with many regular and uniform pores in the crystal structure,…

Random Packing VS. Structured Packing

Random Packing VS. Structured Packing Packing generally refers to materials that are filled with other objects. In chemical engineering, packing refers to the inert solid materials installed in the filling tower, such as Pall ring and Lacey ring, whose role is to increase the contact surface between the atmosphere and liquid, so that they mix strongly with each other. The purpose of packing is to create surface area for vapor/liquid contact so that Mother Nature (and Father Thermodynamics) can produce chemical separation. Chemical separation includes distillation, absorption, and stripping. There are two main types of packing used in mass and…

Molecular Sieve Poisoning

Molecular Sieve Poisoning 1. Carbon Molecular Sieve From a chemical point of view, chlorine, hydrogen chloride and carbon do not react at room temperature. Moreover, the content of chlorine and hydrogen chloride in the air is extremely small. So how can carbon molecular sieve be poisoned? Carbon molecular sieve has many micropores. Chlorine gas and hydrogen chloride can react with the solid particles in fine dust in the air and deposit on the surface of . Although the daily amount is small, the surface of the carbon molecular sieve is covered by sediment after a few years. When a large…

Molecular Sieve Types and Structures

Molecular Sieve Types and Structures Ⅰ. There are two types of molecular sieves: natural zeolite and synthetic zeolite. 1. Most natural zeolites are formed by the reaction of volcanic tuff and tuffaceous sedimentary rocks in marine or lacustrine environments. At present, more than 1,000 kinds of zeolite minerals have been discovered, of which 35 are more important. The common ones are clinoptilolite, mordenite, erionite and chabazite. 2. Because is limited by resources, people later use synthetic zeolite in large quantities. Commercial molecular sieves often use prefix numbers to classify molecular sieves with different crystal structures, such as type 3A, type…

The Common Type A Molecular Sieve Uses

The Common Type A Molecular Sieve Uses 1. 3A molecular sieve 3A molecular sieve is mainly used for drying various liquids (such as ethanol), air, refrigerant, natural gas, methane gas; it is also used for drying unsaturated hydrocarbons and cracked gas, ethylene, acetylene, propylene, butadiene. The main application areas are architectural glass industry, gas refining and purification, petrochemical industry, etc. 2. 4A molecular sieve is mainly used for the drying of natural gas and various chemical gases and liquids, refrigerants, medicines, electronic materials and variable substances, the purification of argon, and the separation of methane, ethane, and propane. Its main…