Krypton Extraction Equipment

Short Description:

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.

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Product Description

The krypton-xenon purification process starts with crude production and uses equipment such as low-temperature liquid oxygen pumps, reaction furnaces, purifiers and fractionation towers. The crude krypton-xenon concentrate undergoes several processes including pressurisation, catalytic reaction, adsorption, purification, heat exchange and distillation. The end products, high purity liquid krypton and liquid xenon, are obtained at the bottom of their respective pure distillation columns.
Our refinery can process krypton-xenon concentrate from our concentration process, purchased krypton-xenon concentrate or purchased crude krypton-xenon mixtures. The main products are pure krypton and pure xenon, with oxygen as a by-product.

Application

• Krypton, which is found at just one part per million in air, is a rare and chemically inactive gas, as is xenon. These noble gases have a wide range of applications in medicine, semiconductor manufacturing, the lighting industry and insulating glass production. Krypton lasers are used in scientific research, medicine and materials processing. Krypton is also essential in the semiconductor industry as an inert gas to protect and control manufacturing environments. The purification of these gases has significant economic and scientific value.

Technical Advantages:

• Our independently developed krypton purification device holds several national patents. Our company's strong technical expertise and R&D capabilities are supported by a highly skilled team, including many international technical experts with extensive industry experience and innovative thinking. With over 50 successful project implementations, we have extensive project experience and continue to attract top local and international talent, ensuring continuous technological innovation.

• Our Krypton-Xenon purification device adopts the world's leading process simulation software HYSYS for calculation, and adopts the world's most advanced Krypton-Xenon device design and manufacturing technology, which has been successfully trial-produced and operated, with excellent comprehensive performance. In addition, it has also passed the technical appraisal of the domestic industry expert group. The extraction rate of pure krypton and pure xenon equipment exceeds 91%, which can help users fully recover and extract krypton and xenon, and its process flow and equipment performance have reached the international advanced level.

• Our krypton-xenon purifier uses advanced HYSYS process simulation software for calculations and incorporates world-leading design and manufacturing technology. It has been successfully tested and operated, demonstrating excellent overall performance and passing technical evaluations by domestic industry experts. The extraction rate for pure krypton and xenon exceeds 91%, enabling users to fully recover and extract these gases. Our process flow and equipment performance are of an international industry-leading standard.

• Our krypton-xenon purification process has undergone multiple HAZOP analyses, ensuring high reliability, safety, ease of operation and low maintenance costs.

• Our design takes a holistic approach to rare gas extraction. Depending on market conditions, customers can use krypton, xenon and by-product oxygen simultaneously, potentially adding significant economic value.

• The system uses advanced DCS computer control technology, integrating central, machine and local controls to effectively monitor the entire production process. The control system offers an advanced and reliable design with a high performance/price ratio.o, etc.

Examples of cold box equipment that our company has mastered the core technology and manufactured independently