At present zeolite for oxygen plant most use Lithium grade zeolite molecular sieve and Sodium zeolite grade molecular sieve by PSA or VPSA technology.
Molecular sieve is a crucial adsorbent in the technology of pressure swing adsorption air separation oxygen production. Molecules whose molecular diameter is smaller than the sieve pores of zeolite molecular sieves can enter the pores, but they can still use different molecular polarities, unsaturation, and polarization rates，the difference in adsorption strength and diffusion rate caused by spatial configuration and so on separates gas molecules. This is because the zeolite composed of cations and the negatively charged silico-alumina framework is itself a polar substance, which can polarize molecules through electrostatic induction. Therefore, the more polar, or the more easily polarized molecules, the easier it is to be adsorbed.
Zeolite molecular sieve has high adsorption capacity at low adsorbate concentration (or high adsorption temperature). The reason is that its adsorption properties are different from other adsorbents. For example, the adsorption force of activated carbon is a function of dispersion forces, while zeolite molecular sieve not only has a function of dispersion force but also has a large electrostatic force. Since the crystal cavity of the zeolite molecular sieve contains cations, and the stock oxygen is negatively charged, a strong local positive electric field is generated around the cations. Due to the combined effect of the two, zeolite molecular sieves have a particularly strong adsorption capacity.
Pressure swing adsorption (PSA) is a newly emerging gas separation technology in the industry in recent decades. Take the adsorbent molecular sieve as an example. It uses air as raw material and uses a high-efficiency and high-selection solid adsorbent under certain pressure and circulation conditions. According to the difference of adsorption balance and rate behavior and the selective adsorption performance of nitrogen and oxygen, the rapid adsorption- desorption cycle is carried out to achieve the purpose of gas separation and adsorbent recycling.
The main application areas of pressure swing adsorption include the following aspects: air purification, pressure swing adsorption air separation to produce oxygen, pressure swing adsorption air separation to produce nitrogen, pressure swing adsorption to produce hydrogen, use pressure swing adsorption to transform fertilizer plants, recover carbon dioxide from a gas source rich in carbon dioxide.
Among them, the use of pressure swing adsorption to produce oxygen is becoming more and more extensive. It is not limited to a few industries such as metallurgy and chemical industry, but also has a large number of applications in medicine, food, papermaking, environmental protection, aquaculture, home health, and other industries.
The classification of pressure swing adsorption oxygen production has the following three:
VPSA oxygen production (100m³/h-7500m³/h) adsorption pressure about 40kPa desorption pressure about 50kPa.
PSA oxygen production (1m³/h-200m³/h) adsorption pressure about 5kg, atmospheric pressure desorption
Rapid adsorption method (1L/min-20L/min) adsorption pressure about 2kg, atmospheric pressure desorption
Application advantages of pressure swing adsorption
Pressure swing adsorption has a short cycle time, low energy consumption for normal temperature operation, low investment, and easy automatic control.
Its main advantages are reflected in:
1. Low energy consumption, it only consumes a lot of work when air is compressed. Generally, PSA pressure is lower than 0.2-0.6MPa, VPSA is below 0.06MPa, VPSA is below 0.06MPa, and VPSA energy consumption is much lower than PSA. Adsorbent regeneration does not require heating and only requires little work from a small vacuum pump. The power consumption of VPSA oxygen production is less than 0.41KWh/m3, the power consumption of nitrogen production is 0.27-0.31KWh/m3, and the hydrogen production of coke oven gas is 0.5KWh/m3.
2. Good adaptability, the pressure swing adsorption device can be adjusted slightly to change the production capacity, change the impurity content of the raw gas, and the process conditions such as the inlet pressure.
3. The adsorbent has a long service life. Generally, it can be used for more than ten years and can be extended with a little new adsorbent, with less maintenance time and a high operating rate.
4. Can be automated.
5. The equipment can operate at room temperature outdoors, without insulation or heating and cooling. Except for the low-voltage booster meters, there is no consumption of steam, water, or electricity. Pressure swing adsorption is of great significance for reducing industrial investment and energy consumption.
Medical granular oxygen sieve JLOX-100 series molecular sieve and JLOX-500 series molecular sieve produced by Jianlong Company has outstanding performance in the field of pressure swing adsorption.
JLOX-500 series high-efficiency molecular sieve for oxygen generation is a new type of X-type molecular sieve, which is mainly used in the pressure swing adsorption oxygen generation process with pressure adsorption and atmospheric desorption. It has a high nitrogen adsorption capacity and excellent nitrogen and oxygen separation coefficient.
JLOX-500 series high-efficiency oxygen generation molecular sieves are mainly used in pressure swing adsorption oxygen generation devices. It has the advantages of high oxygen purity, high oxygen production rate, fast adsorption rate, and long service life. It is the best substitute for the 5A (Ca A) oxygen molecular sieve. JLOX-500 products are mainly used in PSA industrial oxygen production and medical center oxygen supply systems. The JLOX-501 product is a molecular sieve dedicated to PSA medical (household) oxygen generators and micro oxygen generators.
The JLOX-100 series of high-efficiency oxygen production molecular sieve is a lithium X-type aluminosilicate crystal, which is an oxygen production molecular sieve with an international advanced level. Widely used in steel, non-ferrous metallurgy, chemical industry, furnace energy-saving transformation, environmental protection, papermaking, aquaculture, medical care, and other industries.
The JLOX-100 series of high-efficiency oxygen molecular sieve is mainly used in pressure swing adsorption oxygen generation devices. It has the characteristics of large adsorption capacity, high separation coefficient of nitrogen and oxygen, and easy desorption. Its nitrogen adsorption capacity is about twice that of A-type oxygen molecular sieve. At the same time, JLOX-100 series oxygen-rich molecular sieve has good wear resistance and long service life. Therefore, the use of JLOX-100 series oxygen-enriched molecular sieve to produce oxygen can significantly reduce the energy consumption of oxygen production and the operating cost of the device
, Improve economic efficiency. The JLOX-101 product is a high-efficiency oxygen molecular sieve used in high-end small medical (home) oxygen generators.
The Chinese research and production company JALON specializes in the research, manufacture, sales and service of various molecular sieves.
JALON provides product categories based on four existing technologies: molecular sieve, zeolite powder, activated zeolite powder and activated alumina.
The company’s main business area is the development and production of molecular sieve products suitable for modern high-tech gas separation systems.
JALON’s products and projects are distributed in the United States, Germany, France, South Korea, Japan and many countries in the world. JALON has a complete customer network. Leading companies engaged in oil and gas production, machinery manufacturing, food industry, coal, chemical, petrochemical and other industries use JALON services.
Further information at jalonzeolite.com.
This letter is to inform you that we evaluated Molecular Sieve JLOED 3.0-5.0 MM product from Luoyang Jalon Micro-nano New Materials Co., Ltd to dry our organic solvents for production of electrolyte for Li ion battery. The resulting organic solvents that went through our process with the Molecular Sieve JLOED 3.0-5.0 MM product in our R/D and production facility located in Chico, CA, US passed our specifications showing extremely low content of moisture, below 10ppm. This Molecular Sieve product met our quality requirement, and it is highly recommended for use in the industry of Li ion battery for drying of organic solvents. We also appreciate the technical support from the company.
Nanotech Energy
Luoyang Jalon Micro-nano New Materials Co., Ltd. JLPM series molecular sieves are mainly used for cryogenic drying of general industrial gases. The purification system in the air separation unit removes H2O and CO2, as well as natural gas and other hydrocarbon desulfurization (removal of H2S and mercaptans) and CO2.
It is worth mentioning that Yuntianhua United Commerce Co., Ltd. Company 52000 Nm3/Cryogenic air separation unit project. The design and manufacture method of the air separation unit by air, adsorber adopt vertical radial flow design, processing capacity of 311352 nm3 / h, 5.13 Bar (A) adsorption pressure, loading type my company JLPM3 efficient molecular sieve 92 tons, 107 tons of activated alumina, can ensure that the CO2 content in the air mean 1000 parts per million (2000 PPM) instantaneous equipment and stable operation, export CO2 molecular sieve < 0.1 PPM.
The fifth-generation high-performance molecular sieve JLPM1 is an advanced molecular sieve used in the pre-purification unit (APPU) of air separation equipment. Compared with previous generations, the fifth-generation high-performance molecular sieve JLPM1 has significantly improved CO2 adsorption capacity; the fifth-generation high-performance molecular sieve JLPM1 will bring multiple benefits to air separation designers and operators. For the design of the new air separation plant, the application of the fifth-generation high-performance molecular sieve JLPM1 can make the air separation occupy a smaller area, thereby reducing equipment investment and operating costs. The fifth-generation high-performance molecular sieve JLPM1 can also be used for the transformation of old equipment, which can reduce energy consumption or improveair separation processing capacity.
Oxygen molecular sieve is an important material to ensure the work of VPSA oxygen production equipment. This project is another successful case of our JLOX-103 lithium-type high-efficiency oxygen molecular sieve.
The 30000Nm3/h pressure swing adsorption (VPSA) oxygen production project of Zhuhai Yueyufeng Iron and Steel Co., Ltd., designed and built by CSSC Huanggang Precious Metals Co., Ltd., was successfully started up on June 27, 2019. As of May 29, 2020, the device has been operating stably for 11 months, and all indicators are better than the design indicators. It has been highly recognized and praised by customers, and has created a cumulative effect of 150 million yuan per year for the enterprise. At the same time, the project has realized intelligent oxygen production, mobile control and remote monitoring to guide production, helping to realize the green and intelligent promotion of the industry.
The project uses 4 sets of pressure swing adsorption (VPSA) oxygen generators in parallel. The single set of device is designed to produce 7500Nm3/h of oxygen and 80% oxygen purity. It is filled with our company (Luoyang Jalon Micro Nano New Materials Co., Ltd.) JLOX-103 lithium-type high-efficiency oxygen molecular sieve is 68 tons, the actual oxygen output reaches 7650Nm3/h, and the oxygen concentration is above 82.3%. The 4 sets of equipment in this project are filled with 272 tons of our JLOX-103 oxygen molecular sieve, with a total oxygen production of more than 30000Nm3/h.
Oxygen molecular sieve is an important material to ensure the operation of VPSA oxygen production equipment. This project is another successful case of our company’s JLOX-103 lithium-type high-efficiency oxygen molecular sieve.
Luoyang Jalon Micro-nano New Materials Co., Ltd. JLOX-100 series high-efficiency oxygen generation molecular sieve is a lithium X-type aluminosilicate crystal, which is an oxygen generation molecular sieve with international advanced level. Widely used in: iron and steel, non-ferrous metallurgy, chemical industry, furnace energy-saving transformation, environmental protection, papermaking, aquaculture, medical care and other industries.
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