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4A Molecular Sieve Can Be Adsorbed According to the Size of the Molecule As we all know, the structural characteristics of 4A molecular sieve determine its good adsorption performance, catalytic performance and ion exchange performance. Where are these three performances mainly manifested? 1. Performance characteristics of 4A molecular sieve Adsorption performance: The pore size of 4A molecular sieve is average, and when the dynamic diameter of the molecule is smaller than the pore size of the molecular sieve, it can enter the inside of the channel for adsorption. 4A molecular sieve is like a sieve that separates gas and liquid.…

What Are the Guidelines for Using 5A Molecular Sieve to Remove Water? The pore size of 5A molecular sieve is 5A, which is generally called calcium molecular sieve. It can adsorb any molecule smaller than this pore size, and is mainly used in the separation of normal isomeric hydrocarbons, pressure swing adsorption separation, and co-adsorption of water and carbon dioxide. Based on the industrial application characteristics of 5A molecular sieve, the 5A molecular sieve desiccant produced by high-quality manufacturers has high selective adsorption, fast adsorption speed, especially suitable for pressure swing adsorption, and can adapt to various sizes of gas…

Why Only Molecular Sieve 3A is Qualified to Be Used in Hollow Glass? Molecular sieve can simultaneously adsorb water and residual organic matter in the hollow glass, so that the hollow glass remains clean and transparent even at very low temperatures. At the same time, it can fully reduce the strong internal and external pressure difference of hollow glass caused by the huge temperature difference between seasons and day and night. The molecular sieve in the hollow glass also solves the problem of distortion and breakage caused by expansion or contraction, thus prolonging the service life of the hollow glass.…

What Are the Routine Preparations Required When Using Activated Alumina? Activated alumina is mainly used as an adsorbent in industrial applications such as gas drying, liquid drying, water purification, selective adsorption, and decomposition processes in the petroleum industry. Due to its strong affinity for water, activated alumina has been widely used in gas drying. The main gases that can be dried using activated alumina are acetylene, cracking gas, coke oven gas, hydrogen, oxygen, air, ethane, hydrogen chloride, propane, ammonia, ethylene, hydrogen sulfide, propylene, argon, methane, sulfur dioxide, carbon dioxide, helium, nitrogen, and chlorine. As activated alumina releases a large amount…

What is the Selectivity and Adsorption Efficiency of the Molecular Sieve Type 4A? molecular sieve type 4A is composed of silicon (aluminum) octahedra, and the central polyhedron serves as the framework structure. The intermediate space of the framework is extremely empty, forming many well-arranged pores or channels. There are metal ions in the molecular sieve, and the framework space is filled with water molecules. Cations can be exchanged, and water molecules can be removed. Under certain conditions, the framework structure can also change. The characteristics of this structure are the inherent reasons for the various properties of molecular sieves. Properties…

What Are the Differences Between Activated Alumina and Molecular Sieve? Activated alumina and molecular sieves are commonly used adsorbents in industrial production, playing irreplaceable roles. However, one question has always puzzled us: what is the difference between activated alumina and molecular sieves? What are their different functions? Today, we will analyze their specific differences from the aspects of structure, adsorption performance, and application. Differences in the structure of activated alumina and molecular sieves Activated alumina and molecular sieves are both solid materials with high porosity and high dispersion, and have a large specific surface area. However, the difference between activated…

The Secret of Carbon Molecular Sieve in PSA Nitrogen Generator The usage and selection of activated carbon molecular sieve in PSA nitrogen generators We all know that activated carbon molecular sieve is the core components of PSA nitrogen generators. Today, we will explain how to select the activated carbon molecular sieve for PSA nitrogen generators and determine the usage. There are many types of the molecular sieve, and each type has different characteristics and adsorption capacities. Generally speaking, activated carbon molecular sieve is selected as adsorbents for PSA nitrogen generators. The activated carbon molecular sieve is black cylindrical solids with…

Regeneration Principle of Molecular Sieve in PSA Air Separation Plant For the PSA molecular sieve air separation plant, the molecular sieve is undoubtedly the core component of the system; only the clean compressed air is continuously adsorbed and regenerated through the molecular sieve, in order to continuously produce the nitrogen or oxygen we need. Regeneration can be understood as the reverse process of adsorption; because after the molecular sieve completes a saturated adsorption, it cannot continue to adsorb gas, and it needs to “recover” its adsorption capacity, which is what we call “regeneration”. Molecular sieve regeneration can help the molecular…

Characteristics of Molecular Sieve Used in PSA Oxygen Production Systems The molecular sieve powder used in the PSA oxygen production system is an artificially synthesized crystalline aluminosilicate. Understanding of PSA molecular sieve PSA molecular sieve is used in the oxygen generation process of air separation and oxygen/nitrogen separation. Compared with ordinary calcium-type and sodium-type oxygen production molecular sieves, pressure swing adsorption is suitable for various VPSA devices and has better processing capacity and separation efficiency. In fact, there are not only one type of molecular sieve, and there are many types. At present, the main types commonly used are three…

What Conditions Need to Be Controlled for the Production of Nitrogen Using Carbon Molecular Sieves? Carbon molecular sieve air compression purification process Purifying the raw air before entering the carbon molecular sieve adsorption tower is necessary because particles and organic atmosphere entering the adsorption tower can block the micropores of the carbon molecular sieve and gradually reduce its separation performance. There are methods to purify the raw air: 1) keeping the intake of the air compressor away from places with dust, oil mist, and organic atmosphere; 2) purifying the raw air with equipment such as a refrigerated dryer and adsorbent…

Composition of a Nitrogen Generator with PSA Molecular Sieve PSA molecular sieve nitrogen generator is mainly composed of the following parts: PSA molecular sieve compressed air purification components Composed of high-efficiency oil remover, refrigerated air dryer, precision filter and activated carbon filter. The working principle is that compressed air enters the air buffer tank for buffering, then enters the high-efficiency oil remover to remove most oil, water, dust and other impurities, then enters the refrigerated air dryer to remove more water, and finally enters the precision filter to remove oil and dust, and then enters the activated carbon filter for further…

How to Choose a High-performance Carbon Molecular Sieve Nitrogen Generation Equipment? Due to the different adsorption capacities of oxygen by carbon molecular sieve under different pressures and very significant differences, reducing the pressure can desorb the oxygen molecules adsorbed by the carbon molecular sieve, regenerate the carbon molecular sieve, and then repeat the cycle alternately to continuously produce high-quality nitrogen. The PSA nitrogen generator (pressure swing adsorption nitrogen production equipment) sold by manufacturers uses high-quality molecular sieves as adsorbents and directly obtains nitrogen from compressed air using the pressure swing adsorption principle. Complete process design, reasonable use effect. Reasonable internal components,…