Molecular Sieve Industrial Grade

Adsorption Principle and Application of Lujie Molecular Sieve

Lujie molecular sieves are artificially hydrothermally synthesized aluminosilicate crystals, which produce different types of molecular sieves with different silicon-aluminum ratios, such as: A type, X type, Y type, etc., and become the same after exchange of different metal cations. Different types of molecular sieves. According to the size of the pores inside the crystal, different material molecules are adsorbed or repelled. At the same time, the order of adsorption is determined according to the polarity or polarizability of different material molecules, so as to achieve the separation effect, so it is called "molecular sieve" "The pore size distribution of molecular sieve is very uniform, so molecular sieve has more unique advantages than other types of adsorbents: It has extremely high and deep dry separation; it can effectively avoid the co-adsorption phenomenon during separation and improve product rate. ; Drying and purification of substances can be completed in the same system at the same time; Under higher temperature conditions, it also has a certain adsorption capacity; Molecular sieve systems have lower equipment investment and lower operating costs than other drying and separation devices.

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    Petroleum refining: Lujie provides professional molecular sieve series products for the petroleum refining industry.

   Drying of alkylation raw materials-molecular sieves help reduce acid consumption, reduce the use and erosion of regenerators, and bring about an overall improvement in the quality of alkylation.

   Drying and purification of hydrogen in refineries-to prevent the corrosion of downstream equipment and filter out the chlorine regenerated from the catalyst.

   Refinery gas drying--used to prevent the pipeline from freezing due to reformed gas during cryogenic processing.

   Drying and purification of refinery products-used for the drying and desulfurization of liquefied petroleum gas (LPG), and the drying of naphtha and kerosene.

   Isomerization treatment-used for drying and purification of raw materials and regenerated hydrogen.

   AHR ethanol dehydration-molecular sieve can dehydrate it to gasoline-grade purity. Compared with azeotropic distillation, it can not only reduce investment and operating costs, but also has greater flexibility in operation, and it does not need to deal with benzene and cyclohexane.

  Pressure swing adsorption (PSA-H2) hydrogen purification process.

  Industrial gas and air separation

  There are many production methods for high-purity industrial gases such as O2, N2, H2 and CO. Green molecular sieves play a key role in these production processes due to their high adsorption selectivity and high adsorption capacity.

  Molecular sieves are an indispensable part of the cryogenic process for producing high-purity H2 and CO.

  In a typical cryogenic process, the synthesis gas (mainly composed of H2 and CO) from natural gas reformation first passes through an adsorption bed to remove most of the CO2. Subsequently, the water-saturated synthesis gas (which still contains ppm-level CO2) passes through the molecular sieve adsorption bed to remove the content of water and CO2 to a level much less than 1 ppm; it ensures that the pipeline does not Will be blocked due to the freezing of water and CO2. The use of molecular sieve adsorbents with high adsorption capacity and long life also helps to reduce equipment investment and operating costs.

   H2 can also be produced by non-cryogenic means, that is, by molecular sieve adsorption. The highly selective molecular sieve adsorbent can reduce the content of impurities to a relatively low level, ensuring that the purity of the produced H2 gas reaches more than 99.9%.

   Molecular sieves are used in air separation to produce high-purity O2 and N2 using low-temperature rectification or adsorption processes.

   In the general cryogenic process, the compressed and low-temperature cooled air is adsorbed through the molecular sieve bed, and the content of H2O and CO2 can be reduced to less than 1 ppm, thus effectively preventing the freezing of low-temperature equipment when separating O2 and N2 Blocking phenomenon.

  The 13X APG molecular sieve dedicated to Lujie Air Separation has high adsorption capacity and high selectivity for H2O and CO2, and its product performance and adsorption index have reached the industry standard.

   When oxygen is produced by the molecular sieve adsorption method, the air under normal pressure enters the molecular sieve adsorption bed, and the efficient molecular sieve removes water, CO2, and N2 from the air to obtain 95% oxygen. The PSA O2-HP molecular sieve of Lujie products also has high adsorption capacity and high selectivity for H2O, CO2 and N2 in the pressure swing adsorption process.

   Freeze drying

  Lujie provides molecular sieve desiccants for air conditioning and refrigeration systems in automobiles, household appliances, and industrial construction.

  The high drying capacity molecular sieve desiccant produced by Lujie is compatible with refrigerant and lubricant to effectively prevent equipment failure. The high mechanical strength and particle integrity of the XH series molecular sieve desiccant can prevent the desiccant particles from breaking and abrasion, especially in the automotive air conditioning system with severe vibration. These characteristics ensure the advantages of TOP molecular sieve desiccant in terms of economy and operational reliability.

  Petrochemical

  Lujie molecular sieve products provide technology and product services for the olefin industry.

  All ethylene manufacturers worldwide use molecular sieve desiccant. Lvjie will use innovative technology to make new contributions to the development of the olefin industry

  The polymerization equipment has very high requirements on the raw material gas, and it must rely on advanced molecular sieve products and corresponding application technologies to protect the polymerization catalyst, thereby producing high-quality polymer products. Lujie can not only provide high-quality molecular sieves according to customer requirements, but also provide on-site services according to the design of the adsorption system.

  Users can use Lujie molecular sieve products to effectively dehydrate ethylene, styrene and other materials. Using green and clean special molecular sieve, the monomer products can meet the requirements of polymerization level. Lujie molecular sieve can also help to remove trace contaminants in many processes, including regenerated molecular sieve used in sulfur, nitrogen mixing, oxidation, mercury treatment process, solvent, comonomer treatment process, and arsenic and sulfur mixture treatment Of non-renewable molecular sieves.

  Lujie's products are strictly required to meet high quality standards in order to extend the service life of the products.

  Transportation / Truck Transportation

  Lujie high-quality molecular sieve can make your pneumatic brake system achieve the most reliable performance.

  Lvjie-AB is the ideal choice for the braking system of heavy trucks and railway locomotives. The product has the following characteristics: large drop in dew point and high dynamic drying capacity. In addition, it can maintain long-lasting performance even if it is coated with compressor oil. It also has strong vibration resistance and wear resistance.

  natural gas

  Lujie provides the widest range of molecular sieve products for the field of natural gas drying, including:

  Green Jie molecular sieve natural gas dryer uses 4A-DG 1/16 ", 1/8" strip type and 1/8 "trilobal series products.

  Using 4A-LNG can remove CO2, H2S and low molecular weight mercaptan from natural gas.

  The RK-29 molecular sieve used only in the liquid natural gas processing unit removes H2S and low molecular weight mercaptan from propane. The RK-29-molecular sieve removes COS from propane and the 13X molecular sieve removes high molecular weight thiol from butane.