Products
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Nitrogen Generator By Pressure Swing Adsorption (PSA)
Nitrogen generator by pressure swing adsorption is the use of a carbon molecular sieve adsorbent processed from high quality coal, coconut shell or epoxy resin under pressurized conditions, the diffusion speed of oxygen and nitrogen in the air into the carbon molecular sieve hole, so as to separate the oxygen and nitrogen in the air. Compared with nitrogen molecules, oxygen molecules first diffuse into the holes of carbon molecular sieve adsorbent, and the nitrogen that does not diffuse into the holes of carbon molecular sieve adsorbent can be used as the product output of gas for users.
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VPSA Oxygenerator
The VPSA Oxygen Generator is a pressurized adsorption and vacuum extraction oxygen generator. Air enters the adsorption bed after compression. A special molecular sieve selectively adsorbs nitrogen, carbon dioxide and water from the air. The molecular sieve is then desorbed under vacuum conditions, recycling high purity oxygen (90-93%). VPSA has a low energy consumption, which decreases with increasing plant size.
Shanghai LifenGas VPSA oxygen generators are available in a wide range of models. A single generator can produce 100-10,000 Nm³/h of oxygen with 80-93% purity. Shanghai LifenGas has extensive experience in the design and manufacture of radial adsorption columns, providing a solid foundation for large-scale plants. -
Krypton Extraction Equipment
Rare gases such as krypton and xenon are highly valuable for many applications, but their low concentration in air makes direct extraction a challenge. Our company has developed krypton-xenon purification equipment based on cryogenic distillation principles used in large-scale air separation. The process involves pressurising and transporting liquid oxygen containing trace amounts of krypton-xenon via a cryogenic liquid oxygen pump to a fractionation column for adsorption and rectification. This produces by-product liquid oxygen from the upper-middle section of the column, which can be re-used as required, while a concentrated crude krypton-xenon solution is produced at the bottom of the column.
Our refining system, independently developed by Shanghai LifenGas Co., Ltd., features proprietary technology including pressurised evaporation, methane removal, oxygen removal, krypton-xenon purification, filling and control systems. This krypton-xenon refining system features low energy consumption and high extraction rates, with the core technology leading the Chinese market. -
Neon Helium Purification System
The Crude Neon and Helium Purification System collects raw gas from the neon and helium enrichment section of the air separation unit. It removes impurities such as hydrogen, nitrogen, oxygen and water vapour through a series of processes: catalytic hydrogen removal, cryogenic nitrogen adsorption, cryogenic neon-helium fraction and helium adsorption for neon separation. This process produces high purity neon and helium gas. The purified gas products are then rewarmed, stabilised in a buffer tank, compressed using a diaphragm compressor and finally filled into high pressure product cylinders.
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Oxygen Generator by Pressure Swing Adsorption (PSA)
According to the principle of pressure swing adsorption, the pressure swing adsorption oxygen generator uses the artificially synthesized high quality zeolite molecular sieve as the adsorbent, which is loaded into two adsorption columns, respectively, and adsorbs under pressure and desorbs under depressurized conditions, and the two adsorption columns are in the process of pressurised adsorption and depressurized desorption respectively, and the two adsorbers alternately adsorb and desorb, so as to continuously produce oxygen from the air and supply customers with oxygen of the required pressure and purity.
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The MPC Automatic Control System of the Air Separation Unit
The MPC (Model Predictive Control) automatic control system for air separation units optimizes operations to achieve: one-key adjustment of load alignment, optimization of operating parameters for various working conditions, reduction of energy consumption during device operation, and decrease in operation frequency.
