The difference between 3a, 4a, 5a molecular sieves
The difference between 3a, 4a, and 5a molecular sieves is mainly due to the different uses, such as the difference in bulk density and compressive strength. Many people who do not understand will think that the difference between these different molecular sieves is in diameter. In fact, this is wrong. Let’s compare the differences and similarities of these three molecular sieves. 3A molecular sieve The bulk density is 680Kg/m³, and the compressive strength (N)≧80/P. Mainly used in the drying of petroleum cracking gas, olefin, gas training field, oil field equipment, and industrial dryer for chemical industry, medicine, hollow spirit, etc. 4A molecular sieve The bulk density is 680Kg/m³, and the compressive strength (N)≧80/P. Mainly used for the drying of natural gas and various chemical gases and liquids, refrigerants, medicines, electronic materials, and abnormal substances. 5A molecular sieve , The bulk density is 680Kg/m³, the compressive strength (N)≧80/P. Mainly used for natural gas drying, desulfurization, carbon dioxide removal, nitrogen and hydrogen separation, production of oxygen, nitrogen and hydrogen, petroleum dewaxing, etc. Molecular sieve has 3A/4A/5A/10X/13X and other models, each model has diameters of 0.4-0.8mm, 1-2mm, 1.6-2.5mm, 2-4mm, 3-5mm and 4-6mm. Molecular sieve.
What is 4A molecular sieves？
4A molecular sieves The selective adsorption performance of water is higher than any Other molecules. It is one of the most used molecular sieve varieties in industry. 4A molecular sieve is an alkali metal aluminosilicate that can adsorb water, NH3, H2S, sulfur dioxide, carbon dioxide, C2H5OH, C2H6, C2H4 and other molecules with a critical diameter not greater than 4A. It is widely used in the drying of gases and liquids, and can also be used in the refining and purification of certain gases or liquids, such as the production of argon. .content_box { border: 1px solid #333; padding: 20px; } .content_box img { max-width: 100%; height: auto; } .content_box h3 { text-align: center; } SLCMS-G1.3 | molecular sieves | Molecular Sieves Supplier Cms Carbon Molecular Sieve SLUHP-100 SLCMS-USP | Carbon Molecular Sieve We are Top Quality 4a Molecular Sieves,If you are interested in 4A molecular sieves,You can browse related products and initiate consultations on our website. { "@context" : "https://schema.org", "@type" : "Article", "headline": "What is 4A molecular sieves", "image":"https://upload.digoodcms.com/536/20200526/1590507026_3A.png", "name" : "What is 4A molecular sieves", "author" : { "@type" : "Person", "name" : "ShanLi", "url": "https://www.cms-psa.com/" }, "datePublished" : "2021-10-23", "articleSection" : "4A molecular sieves", "articleBody" : "The 4A molecular sieve has a pore size of 4A, which absorbs water, methanol, ethanol, hydrogen sulfide, sulfur dioxide, carbon dioxide, ethylene, and propylene. It does not adsorb any molecules larger than 4A in diameter (including propane). The selective adsorption performance of water is higher than any Other molecules. It is one of the most used molecular sieve varieties in industry.", "url" : "https://www.cms-psa.com/article/what-is-4a-molecular-sieves.html" }
The specific role of activated carbons
After the house is renovated, many people will think of using activated carbons to purify the indoor air, but there are many activated carbons products on the market, and people who don’t know activated carbon don’t know how to choose. The following editor will introduce the role of activated carbons. 1. Activated carbons indoor deodorization: Put a few bags of activated carbons in the toilet, kitchen, refrigerator, shoe cabinet, and shoes, and the peculiar smell will disappear without a trace. 2. Indoor detoxification of activated carbons: It can adjust indoor air, absorb toxic and harmful chemical gases emitted by decorative materials such as ammonia, formaldehyde, volatile organic compounds, benzene, toluene, etc., and adjust indoor space humidity. 3. Activated carbons indoor environmental protection: Activated carbons can be placed in offices, offices, reception rooms, hotels, air-conditioned rooms, entertainment venues, new furniture, cars, etc., to deodorize, disinfect, and purify the air. 4. Fool-proof and mildew-proof activated carbons: Preserving ancient books and calligraphy can make precious ancient books and calligraphy always true and safe. The adsorption catalytic function can easily prevent the growth of mold, which not only solves the mold problem, but also eliminates the unpleasant musty smell. 5. Activated carbons indoor sterilization: It can effectively remove the large intestine, Staphylococcus aureus, white ringworm, mold, pyogenic bacteria, Pseudomonas aeruginosa and other bacteria, and inhibit the spread of enterovirus, influenza, filter diseases, and viruses.
Application of activated carbons in water treatment
According to statistics, the industrial wastewater discharged every year in my country is about 8×108 m3, which not only contains highly toxic components such as cyanide, but also contains metal ions such as chromium, zinc, and nickel. There are many wastewater treatment methods, mainly chemical precipitation method, electrolysis method and membrane treatment method, etc. This article introduces the activated carbons adsorption method. Activated carbon has a huge surface area and has high physical adsorption and chemical adsorption functions. Therefore, the activated carbon adsorption method is widely used in wastewater treatment. And it has the characteristics of high efficiency and good effect. Activated carbons is a specially treated carbon with numerous small pores and a huge surface area, with a surface area of 500-1500 square meters per gram of activated carbon. Activated carbon has strong physical adsorption and chemical adsorption functions, and it also has detoxification effects. The detoxification effect is to use its huge area to adsorb the poison in the micropores of the activated carbon, thereby preventing the absorption of the poison. At the same time, activated carbon can be combined with a variety of chemical substances to prevent the absorption of these substances. There are many types of activated carbon used in production. Generally made into powder or granular. Powdered activated carbon has strong adsorption capacity, is easy to prepare and low in price, but it is difficult to regenerate and generally cannot be reused. The granular activated carbon is more expensive, but it can be reused after regeneration, and the working conditions during use are better, and the operation and management are convenient. Therefore, granular activated carbon is often used in water treatment. Activated carbon adsorption refers to the use of the solid surface of activated carbon to adsorb one or more substances in water to achieve the purpose of purifying water.
Precautions for the use of activated carbons
1. Clean and remove dust before use, otherwise these black dust may temporarily affect the cleanliness of water quality. However, it is not recommended to wash it directly with fresh tap water, because once the porous activated carbon absorbs a large amount of chlorine and bleach in the tap water, it will damage the water quality when it is placed in the filter for use. I believe I don't need to say more. Remember to rinse the activated carbon with clean water about 4 times before putting it in the water to remove the activated carbons ash, so as not to stain the water tank and fish. Communicate with each other. The use of activated carbons can remove the fishy smell. 2. It is impossible to clean the clogged debris in the porous pores of activated carbons by simple cleaning in ordinary times. Therefore, the activated carbons must be replaced regularly to prevent the activated carbon from losing its effectiveness due to "saturation of adsorption". And the timing of the replacement is best not to wait for it to fail before replacing it, so as to ensure that the activated carbon can continuously remove the harmful substances in the water quality of the aquarium. It is recommended to replace it 1-2 times a month! 3. The efficiency of activated carbons to treat water quality is related to its treatment dosage, usually "the effect of treating water quality with more dosage is relatively good." 4. After the quantitative activated carbons is used, you should always observe the changes in water quality in the initial stage of use, and pay attention to the observation results, as the basis for judging the time for the replacement of activated carbons after failure. 5. When using medicines to treat fish diseases, the activated carbon should be temporarily taken out and the use should be suspended. In order to prevent the drug from being adsorbed by activated carbon and reducing the therapeutic effect. The efficiency of activated carbons depends on many factors. The shorter the aquarium installation time, the more frequent the replacement of activated carbon (about once a month). The longer the aquarium installation time, the more effective the activated carbon is in the aquarium. The longer it takes (about four months or more).
Introduction to basic knowledge of Activated Carbons
Activated Carbons is a traditional and modern man-made material, also known as carbon molecular sieve. Since its inception, the application fields of Activated Carbons and honeycomb activated carbon have been expanding, and the number of applications has continued to increase. Due to the different sources of raw materials, manufacturing methods, appearance shapes and applications, there are many types of activated carbon, about thousands of varieties. Activated carbon classification method: classification by material, shape, and purpose. Activated carbon is classified by material 1. Coconut shell charcoal Coconut shell activated carbon is made of high-quality coconut shells from Hainan, Southeast Asia and other places. The raw materials are screened, refined by steam carbonization, and then processed through a series of processes such as impurity removal and activation screening. Coconut shell activated carbon is black granular, with developed pore structure, high adsorption capacity, high strength, stable chemical properties, and durability. 2. Nutshell charcoal Nutshell activated carbon is mainly made of nutshell and sawdust as raw materials, through carbonization, activation, and refined processing. It has the characteristics of large specific surface area, high strength, uniform particle size, developed pore structure, and strong adsorption performance. And can effectively absorb free chlorine, phenol, sulfur, oil, gum, pesticide residues and other organic pollution in the water, as well as the recovery of organic solvents. It is suitable for the decolorization, refining, purification and sewage treatment of organic solvents in the pharmaceutical, petrochemical, sugar, beverage, and alcohol purification industries. Nutshell activated carbon is widely used in the deep purification of drinking water, industrial water and wastewater, and the purification of industrial water. 3. Wood charcoal Wood charcoal is made of high-quality wood as raw material, in powder form, refined by high-temperature carbonization, activation and various processes to make wooden activated carbon. It has a large specific surface area, high activity, developed micropores, strong decolorization power, and large pore structure, etc. Features, large pore structure, can effectively absorb the color and other large substances and impurities in the liquid. 4. Columnar carbon Columnar charcoal is made from high-quality wood chips, charcoal, etc., which are crushed, mixed, extruded, formed, dried, carbonized, and activated. Compared with traditional coal-based columnar activated carbon, the columnar activated carbon has lower ash content, less impurities, reasonable pore size distribution, and good adsorption and desorption, which greatly improves the service life of the product (average 2-3 years). It is the same as that of ordinary coal-based carbon. 1.4 times. 5. Coal-based charcoal Coal-based carbon is refined from high-quality anthracite coal as raw materials. The shapes are columnar, granular, powder, honeycomb, spherical and other shapes. It has the characteristics of high strength, fast adsorption speed, high adsorption capacity, large specific surface area, and developed pore structure. . The pore size is between coconut shell activated carbon and wood activated carbon. Mainly used for air purification, exhaust gas purification, high-purity water treatment, wastewater treatment, sewage treatment, etc.