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In the field of industrial nitrogen generation, the performance of carbon molecular sieves directly determines nitrogen purity, gas production efficiency and operating costs. As a commonly used model in the market, CMS330 has maintained a certain application share for a long time. However, with technological upgrades, Chizhou Shanli, a leading enterprise in China's carbon molecular sieve industry, has launched the SLUHP-100 carbon molecular sieve.   Boasting superior separation performance, more stable quality and more cost-effective operation, this product has comprehensively outperformed CMS330. It not only surpasses the industry standards in the domestic market, but also ranks among the world's top-tier products, emerging as the preferred core material for upgrading Pressure Swing Adsorption (PSA) nitrogen generation systems.   The core competitiveness of the SLUHP-100 carbon molecular sieve lies in its precise control over "high-efficiency separation and cost-effective operation", which is also the key to its superiority over CMS330. Relying on Chizhou Shanli's independently developed micropore regulation technology, the SLUHP-100 achieves precise pore size matching. This accurate "molecular sieving effect" enables oxygen molecules to rapidly diffuse into the micropores and be adsorbed, while nitrogen molecules are efficiently retained. Thus, 99.999% high-purity nitrogen can be produced in a single step via the PSA method.   In contrast, CMS330 features a wide and imprecise micropore size distribution. It not only struggles to stably produce 99.999% high-purity nitrogen, but also experiences a significant decline in separation efficiency under low-pressure operating conditions, failing to meet the requirements of high-end industrial applications.   Beyond its core advantage of ultra-high purity output, the SLUHP-100 outperforms CMS330 across all key performance metrics, specifically reflected in two aspects: 1.Lower air-to-nitrogen ratio: Under the same adsorption pressure, the SLUHP-100 consumes less compressed air than CMS330, directly reducing the energy consumption and operating costs of nitrogen generators. 2.Lower ash content: The ash content of the SLUHP-100 is far lower than that of CMS330, which can effectively reduce the risk of molecular sieve pulverization, avoid pipeline blockage, and ensure the long-term stable operation of the nitrogen generation system. On the contrary, CMS330 is prone to pulverization after long-term use, requiring frequent shutdowns for maintenance.   If your enterprise is currently using CMS330 and facing issues such as insufficient nitrogen purity, high operating costs or frequent equipment failures, or if you plan to upgrade your nitrogen generation system, feel free to learn more about Chizhou Shanli's SLUHP-100 molecular sieve. Choose this high-quality core material that comprehensively outperforms traditional models to make your nitrogen generation system more efficient, stable and cost-effective, and safeguard your enterprise's production operations.   For more information on carbon molecular sieves, please visit www.carbon-cms.com.

  1.System Shutdown, Pressure Relief and Power Off Operation First, shut down the system via the nitrogen generator control system, close the compressor outlet and nitrogen generator inlet globe valves, and slowly open the pressure relief valve to relieve pressure until all pressure gauges return to zero. Finally, cut off the main power supply of the system, hang a "Equipment Maintenance, No Switching On" sign and arrange for special personnel to be on duty to avoid the risk of working under pressure or with electricity. This procedure applies to the high purity nitrogen CMS.     2. Separation of Nitrogen Outlet Pipeline and Removal of Adsorption Tower Top Cover Confirm the connection method between the nitrogen outlet pipeline and the adsorption tower, select corresponding tools to symmetrically remove the connecting components. After separation, seal the pipeline port with a sealing plug to prevent debris from entering. Two personnel shall cooperate to remove the top cover of the adsorption tower, place it stably and record the installation position to avoid collision damage.     3. Thorough Cleaning of Spent Carbon Molecular Sieve in the Packed Tower Use tools such as buckets, vacuum cleaners to clean the spent carbon molecular sieve in the tower and collect it into a special waste barrel; purge residual debris in corners with low-pressure compressed air and cooperate with a vacuum cleaner to ensure no residue. Operators shall wear protective equipment, keep the area well-ventilated, and dispose of the spent molecular sieve in accordance with specifications.     4. Integrity Inspection of Wire Mesh and Palm Mat in the Tower Check whether the filter wire mesh in the tower is damaged or loose, and whether the mesh size matches; check whether the sealing palm mat is aged or damaged. If there are problems, replace with components of the same specification in a timely manner, and check the integrity of the fixing components to ensure loading tightness and prevent molecular sieve leakage.     5. Confirmation of Residues in the Tower and Preparation Before Loading Reconfirm that there is no residue, debris and the tower is dry; if there is water stain, purge and dry it. Prepare new carbon molecular sieve, activated alumina and other materials as well as loading tools in advance to ensure the materials are dry and intact, the tools are in normal condition, and the operators are properly protected.     6. Bottom Paving and Preparation for Layered Loading Lay and fix a new palm mat at the bottom of the tower to ensure tight fit without gaps; evenly pave a 10-20cm thick layer of activated alumina on top. After checking that the paving is flat and not loose, install a loading hopper (with the outlet extending to the middle of the tower) to prepare for loading carbon molecular sieve.     7. Carbon Molecular Sieve Loading, Vibration Compaction and Top Cover Installation Slowly and evenly pour new carbon molecular sieve through the loading hopper, control the feeding speed to avoid particle breakage. When loading is nearly at the top of the tower, use vibration equipment to vibrate in all directions for 5-10 minutes for compaction; if there is settlement, replenish materials in a timely manner. Finally, load until it exceeds the tower edge by 5-10cm, lay the top palm mat, then stably cover the top cover and symmetrically tighten the fixing bolts to ensure good sealing.   For more information on carbon molecular sieves, please visit www.carbon-cms.com.

3A molecular sieve is a type of high-performance microporous adsorbent material with potassium-exchanged A-type zeolite as the core component. Its pore size is precisely controlled at 3Å (0.3 nanometers). Relying on its unique molecular sieving effect and excellent adsorption capacity, it has become a core material in the deep drying, purification, and separation processes of gases and liquids, widely adapting to the harsh working conditions of various industries.   Core Product Performance 1.Precise Selective Adsorption: The pore size is exclusively adapted for water molecules (kinetic diameter: 2.8Å) to enter the adsorption channels, enabling efficient interception of large molecules including CO₂, NH₃, and organic hydrocarbons, thus achieving targeted deep dehydration of the target system. The product boasts a static water adsorption capacity of up to 20%–22%, making it especially suitable for drying scenarios of humidity-sensitive media.   2.Excellent Environmental Resistance: The crystalline structure has superior thermal stability, maintaining structural integrity even under a high-temperature environment of 350℃. It also possesses good chemical inertness, resisting corrosion from strong polar solvents and acidic gases such as H₂S, and can operate stably under harsh working conditions to ensure long-term service reliability.   3.High-Efficiency Regeneration and Reusability: After adsorption saturation, the adsorption performance can be quickly restored through heating desorption at 200–350℃ or vacuum desorption, with extremely low loss during the regeneration process. After multiple regeneration cycles, the adsorption efficiency can still be maintained above 90%, significantly reducing the operational costs of industrial production.   4.Safety, Environmental Protection and Compliance: The product itself is non-toxic and free of pollutant emissions. It has obtained FDA food contact safety certification and complies with the EU RoHS environmental directive, allowing safe application in food, pharmaceutical, electronic and other fields with stringent requirements for purity and safety.   Typical Application Scenarios 1.Industrial Gas Drying: Conduct deep dehydration of cracked gas and natural gas to avoid pipeline ice blockage and equipment corrosion issues.   2.Petrochemical Industry: Realize dehydration of hydrocarbons such as liquefied petroleum gas (LPG) and olefins to prevent hydrate formation from affecting production.   3.Refrigeration Systems: Perform drying treatment on refrigerants such as R134a to improve the energy efficiency and operational stability of refrigeration systems.   4.Electronic Packaging: Purify inert gases such as nitrogen and argon to construct a clean environment required for semiconductor production.   5.Pharmaceutical Preparations: Complete solvent dehydration and drug packaging moisture control to effectively extend the shelf life of drugs.   Any interestes or questions ,welcome to visit us at www.carbon-cms.com.

Activated alumina ceramic balls feature a porous structure and large specific surface area, enabling them to effectively adsorb fluoride ions in water. Their fluoride removal mechanism mainly consists of the following two aspects:   1. Adsorption The porous structure of activated alumina ceramic balls provides an extremely large specific surface area, which means that per unit mass of alumina ceramic balls has a vast surface area and can offer abundant adsorption sites for fluoride ions. During the water treatment process, when the water containing fluoride ions flows through the activated alumina ceramic ball layer, the fluoride ions are firmly adsorbed on the surface under the action of adsorption force from the alumina ceramic ball surface. This adsorption is not only rapid but also highly efficient, allowing activated alumina ceramic balls to quickly remove fluoride ions from water. In addition, the pore size distribution of activated alumina ceramic balls plays a crucial role in fluoride removal efficiency. A proper pore size can ensure that fluoride ions smoothly enter the interior of the pores, thereby enhancing the adsorption efficiency. Studies have shown that the optimal fluoride removal effect is achieved when the pore size of activated alumina ceramic balls ranges from 2 to 10 nanometers.   2. Chemical Reaction In addition to adsorption, the active sites on the surface of activated alumina ceramic balls can also react chemically with fluoride ions to form stable compounds. Such chemical reactions include redox reactions, coordination reactions, etc. For instance, the aluminum ions on the surface of alumina ceramic balls can combine with fluoride ions to form stable aluminum fluoride complexes. These complexes are insoluble in water, thus realizing the removal of fluoride ions.   In practical applications, the fluoride removal efficiency of activated alumina ceramic balls is affected by various factors, such as water pH value, temperature, and fluoride ion concentration. Under appropriate conditions, activated alumina ceramic balls can efficiently remove fluoride ions from water, providing people with safe and healthy drinking water.   However, activated alumina ceramic balls also have certain limitations in the fluoride removal process. For example, when the fluoride ion concentration in water is excessively high, the adsorption capacity of activated alumina ceramic balls may become saturated rapidly, resulting in a decline in fluoride removal efficiency. In addition, the regeneration and recycling of activated alumina ceramic balls are also issues that need to be considered. In practical applications, to improve the fluoride removal efficiency of activated alumina ceramic balls, appropriate modifications are usually required, such as loading metal ions and preparing composite materials.   In conclusion, as a high-efficiency fluoride removal material, activated alumina ceramic balls have broad application prospects in water treatment and industrial fields. Through in-depth research and continuous optimization of the fluoride removal principle, we are expected to further improve the fluoride removal efficiency of activated alumina ceramic balls, making greater contributions to environmental protection and water resource utilization.   If you want to get more information about us,you can click www.carbon-cms.com.

1.Stable adsorption performance. The carbon molecular sieve of a nitrogen generator must have excellent selective adsorption capacity, and its adsorption performance and selectivity must not undergo significant changes during long-term operation.   2.Uniform quality and consistent particle size. The carbon molecular sieve of a nitrogen generator needs to ensure uniform particle size, so as to guarantee the uniform transmission of gas molecules in the molecular sieve channels and avoid phenomena such as "streamline effect" and "hot spot effect".   3.Large specific surface area and uniform pore size distribution. The carbon molecular sieve of a nitrogen generator has a large specific surface area and reasonable pore size distribution, so as to increase adsorption capacity and improve adsorption rate.   4.Strong heat resistance and chemical resistance. The carbon molecular sieve of a nitrogen generator needs to have certain heat resistance and chemical resistance, and be able to be used for a long time in environments with high temperature, high pressure and harmful gases.   5.Low cost and high stability. The carbon molecular sieve of a nitrogen generator needs to be relatively low in price, high in durability and have long-term stability to meet the requirements of industrial applications.   For more information ,please click www.carbon-cms.com.

Molecular sieves possess unique and excellent catalytic properties, which are mainly manifested in the following aspects:   Unique and uniform pore structure: Molecular sieves have regular and uniform intracrystalline channels, with pore sizes close to molecular dimensions. This structure makes the catalytic performance of molecular sieves change significantly with the geometric sizes of reactant molecules, product molecules, or reaction intermediates. For example, in certain reactions, only molecules with a kinetic diameter smaller than the pore size of the molecular sieve can enter the channels and be catalyzed, thereby achieving selective control of the reaction.   Large specific surface area: It provides abundant active sites for catalytic reactions, increases the contact opportunities between reactants and catalysts, and improves reaction efficiency. A large number of surface active sites can adsorb and activate reactant molecules, promoting the progress of chemical reactions.   Strong acid centers and redox active centers: These enable molecular sieves to exert catalytic effects in various reactions. Acid centers can facilitate acid-base catalytic reactions, while redox active centers contribute to the occurrence of redox reactions.   Strong polarizable Coulomb field inside the pores: It can polarize reactant molecules and optimize reaction pathways, thereby improving the activity and selectivity of catalytic reactions. This polarization effect helps activate reactant molecules and reduce the activation energy of the reaction.   In conclusion, the catalytic properties of molecular sieves enable them to play an important role in numerous industrial catalytic processes, providing strong support for the development of chemical, petroleum and other fields. Any interestes or questions ,welcome to visit us at www.carbon-cms.com.

Owing to its advantages of large specific surface area, adjustable pore structure, excellent adsorption performance, surface acidity and good thermal stability, activated alumina is widely used as an adsorbent, water purifier, catalyst and catalyst support in fields such as pharmaceuticals, chemical engineering, metallurgy, water purification, chemical analysis and waste gas treatment. It plays a particularly important role in reaction processes including petroleum hydrocracking, hydrofining, hydroreforming, dehydrogenation and automobile exhaust purification.   1.Applications of Activated Alumina in the Adsorption Field As an adsorbent constitutes one of the primary applications of activated alumina, which is mainly attributed to its numerous favorable properties such as large specific surface area, rational pore structure, excellent physical properties and good chemical stability. Its major industrial applications include gas drying, liquid drying, water purification treatment, and selective adsorption in the petroleum industry.   2.Applications in Water Purification The application of activated alumina in the water purification field has been developing rapidly. Its water treatment applications mainly focus on fluoride removal, decolorization, odor elimination and phosphate removal.   3.Applications in Gas Drying Owing to its strong affinity for water, activated alumina exhibits excellent performance in drying moisture from gases. It is capable of drying more than twenty types of gases, including acetylene, hydrogen, oxygen, air and nitrogen.   4.Applications in Liquid Drying Liquid drying is far more complex than gas drying, and the requirements for desiccants are relatively higher. First, no chemical reactions shall occur between the components of the liquid, or between the liquid and the adsorbent during their contact. Second, the substances adsorbed during liquid drying must be removable via rinsing during the regeneration process. At present, the liquids proven to be dryable by activated alumina include aromatic hydrocarbons, high-molecular olefins, gasoline, kerosene and the like. If you are interested in our products and want to know more details, you can click www.carbon-cms.com.

Activated alumina, also known as activated bauxite, is a porous and highly dispersed solid material widely used in industrial fields.   Basic Information The chemical formula of activated alumina is Al₂O₃. It is generally white powder or white spherical porous particles with a density of 3.9-4.0 g/cm³, a melting point of 2050℃, and a boiling point of 2980℃. It is insoluble in water and ethanol.   Performance Characteristics Large Specific Surface Area: Features a well-developed pore structure with a specific surface area of 200-400 m²/g, providing abundant active sites for adsorption and catalytic reactions. Strong Adsorption Capacity: Exhibits high adsorption capacity for water vapor, gases, and organic compounds. The water vapor adsorption capacity can reach 20%-30% (by weight) with a dew point as low as -70℃, making it the preferred material for deep drying of compressed air and other gases. Excellent Thermal Stability: Maintains structural stability at high temperatures below 800℃ with a low thermal expansion coefficient, suitable for high-temperature catalytic or regeneration processes. High Chemical Stability: Chemically stable in the pH range of 4-9, resistant to acid and alkali corrosion, and tolerant to toxic substances such as sulfides and chlorides. It has no risk of heavy metal leaching and complies with environmental protection standards. High Mechanical Strength: Spherical particles have a smooth surface and high mechanical strength, maintaining their original shape without swelling or cracking after water absorption. This facilitates reactor filling and reduces pressure drop. For more information on activated alumina, please visit www.carbon-cms.com.

一、Differences in Pore Size   Pore size varies among molecular sieves, leading to differences in their filtration and separation capabilities. Simply put: 3A molecular sieves can only adsorb molecules smaller than 0.3 nanometers (nm); 4A molecular sieves require adsorbed molecules to be less than 0.4 nm; The same principle applies to 5A molecular sieves (adsorbing molecules < 0.5 nm). When used as a desiccant, a molecular sieve can adsorb at least 21% of its own weight in moisture.   二、Differences in Applications   3A Molecular Sieves are mainly used for drying petroleum cracking gas, olefins, refinery gas, and oilfield gas. They also serve as desiccants in industries such as chemicals, pharmaceuticals, and insulated glass. Typical applications include: drying liquids (e.g., ethanol), air drying in insulated glass, and refrigerant drying. 4A Molecular Sieves are primarily used for deep drying of gases and liquids such as air, natural gas, alkanes, and refrigerants; production and purification of argon; static drying of pharmaceutical packaging, electronic components, and perishable substances; and as dehydrating agents in paints, fuels, and coatings. 5A Molecular Sieves are mainly used for separating normal and isoparaffins; deep drying and purification of gases and liquids; separation of oxygen and nitrogen; and desulfurization of petroleum and liquefied petroleum gas (LPG). They can also act as adsorbents in dewaxing processes using steam as the desorbent.   For more information on molecular sieves, please visit www.carbon-cms.com.    

1.Molecular sieving performance Molecular sieves feature an extremely uniform pore size distribution. Only substances with molecular diameters smaller than the pore size can enter the internal cavities of the molecular sieve crystals. For instance, 3A molecular sieves have a pore size of approximately 0.3 nanometers, allowing only water molecules (about 0.27 nanometers in diameter) to pass through while repelling larger molecules (such as propane, around 0.43 nanometers). 5A molecular sieves, with a pore size of roughly 0.5 nanometers, are used for separating oxygen (0.34 nanometers) and nitrogen (0.36 nanometers). This precise "molecular screening" capability makes them key materials for separation and purification processes.   2.Adsorption performance Even if molecules are smaller than the pore size, molecular sieves preferentially adsorb polar molecules (such as water and carbon dioxide) and unsaturated molecules (such as alkenes) through van der Waals forces or hydrogen bonds on the pore surface. This further enhances sieving precision. For example, nitrogen production using carbon molecular sieves achieves efficient nitrogen separation by preferentially adsorbing oxygen (which has slightly stronger polarity).   3.Catalytic performance The pore structure of molecular sieves serves as "microreactors" for chemical reactions. The acidic sites on their surface (generated by the charge balance between the negative charge of aluminum-oxygen tetrahedra and cations) can catalyze carbocation-type reactions. For instance, Y-type molecular sieves, as petroleum cracking catalysts, can crack heavy oil into light fuels like gasoline. They are currently one of the most widely used catalysts in the petroleum refining industry.   Any interestes or questions ,welcome to visit us at www.carbon-cms.com.

Molecular sieve, often called zeolites or zeolite molecular sieves, are classically defined as "aluminosilicates with a pore (channel) framework structure that can be occupied by many large ions and water".    According to the traditional definition, molecular sieves are solid adsorbents or catalysts with a uniform structure that can separate or selectively react molecules of different sizes.    In a narrow sense, molecular sieves are crystalline silicates or aluminosilicates, which are connected by silicon-oxygen tetrahedra or aluminum-oxygen tetrahedra through oxygen bridges to form a system of channels and voids, thus having the characteristics of sieving molecules.    Basically, it can be divided into several types of A, X, Y, M and ZSM, and researchers often attribute it to the solid acid category.   If you are interested in our products and want to know more details, you can click www.carbon-cms.com.  

Carbon molecular sieve is a new type of adsorbent developed in the 1970s. It is a kind of excellent non-polar carbon-based cellulose material.   The main component of carbon molecular sieve is elemental carbon, and the appearance is a black columnar solid. It contains a large number of micropores with a diameter of 4 angstroms, the micropores have a strong instantaneous affinity for oxygen molecules and can be used to separate oxygen and nitrogen in the air.Nitrogen adopts a normal temperature and low pressure nitrogen production process, which has the advantages of less investment cost, faster nitrogen production speed, and lower nitrogen cost than the traditional cryogenic high pressure nitrogen production process. Therefore, it is currently the preferred pressure swing adsorption (PSA) nitrogen-rich adsorbent for air separation in the engineering industry.   Carbon molecular sieve  is used in the chemical industry, oil and gas industry, electronics industry, food industry, coal industry, pharmaceutical industry, cable industry, and metal It is widely used in heat treatment, transportation and storage. For more information on carbon molecular sieves, please visit www.carbon-cms.com.