Origin of 1. molecular sieve oxygen production

In 1962, the United States Union Carbide Company (UCC) discovered the selective characteristics of molecular sieve gas, and realized the separation of a few different gases on the experimental equipment, and then successfully developed the world's first hydrogen production industrial device. With the continuous improvement of molecular sieve materials and processes, PSA technology was first applied to air separation in the United States and Germany in the mid-seventies and was applied in the chemical industry. By the mid-eighties, the development of the chemical industry played a key role in improving the performance of molecular sieves, making it possible to miniaturize the equipment. The advent of the first small oxygen generator developed by praxair Company in the United States in 1985 marked the beginning of the miniaturization of PSA technology. In the early 1990 s, medical oxygen generators in the sense of products began to appear.

Oxygen and Zhenjiang: As we all know, Zhenjiang is one of the most developed areas in the oxygen generator industry. In fact, oxygen and Zhenjiang have a deeper origin. Before 1992, oxygen production mainly used calcium sieve. In 1992, American scientist Professor R.T. YANG published a research article "Lithium type X zeolite as a superior sorbent for air separation" in SCIENCE, which systematically studied lithium-based low-silicon X-type molecular sieves, showing LILSX's excellent performance for nitrogen and oxygen separation and great industrial application prospect. R.T. YANG, whose Chinese name is Yang Zubao, was born in Zhenjiang, Jiangsu Province, China in 1942. He is an expert in chemical engineering, an academician of the National Academy of engineering of the United States, an academician of the Academia Sinica of Taiwan, a foreign academician of the Chinese Academy of engineering, and a John B.Fenn Distinguished University of Michigan Professor of Engineering.

Principle of 2. molecular sieve pressure swing adsorption oxygen production

Principle: The principle of adsorption and desorption of molecular sieves is used to separate high-purity oxygen from the air.

The crystal of molecular sieve is a cage structure, with very developed crystal cavities, with very strong cations and oxygen anions in the crystal cavities, forming a molecular sieve with extremely strong polarity, while oxygen and nitrogen are non-polar molecules. When oxygen and nitrogen pass through the polar molecular sieve, under the action of polar molecules, oxygen and nitrogen produce induced dipole, while the induced dipole of oxygen and nitrogen and the polarity of molecular sieve produce an induced force, the easily polarized nitrogen produces an inducing force far greater than the inducing force produced by oxygen, so the adsorption capacity of the molecular sieve for nitrogen is greater than the adsorption capacity for oxygen, so nitrogen is preferentially adsorbed by the molecular sieve and enriched in the solid phase of the molecular sieve, and oxygen is enriched in the non-solid phase, which is the product gas of oxygen.

The molecular sieve has the characteristics that the adsorption capacity of nitrogen increases when the pressure is increased and the adsorption capacity decreases when the pressure is reduced. Therefore, the molecular sieve can be used to adsorb nitrogen when the pressure is increased and the nitrogen is desorbed from the molecular sieve when the pressure is reduced.Realizing Pressure Swing Adsorption Oxygen Production.

The advantages of 3. porcelain molecular sieve

Higher nitrogen adsorption capacity: Jiangsu Sinocera company with the accumulation of molecular sieve, catalyst production experience and technology, developed a GCL-060AS of high efficiency lithium sieve, nitrogen adsorption capacity of up to 27 mL/g. Other peerslithium baseThe nitrogen adsorption capacity of oxygen molecular sieve is more than 22-24 mL/g. Under the condition of achieving the same flow rate and oxygen concentration, the GCL-060AS is more efficient. At the same time, due to the larger particle size, higher strength, and lower resistance in the system, GCL-060AS can achieve longer battery life when used in a portable oxygen generator.

Higher oxygen production: In industrial VPSA oxygen production,Sinocera GCL-150 molecular sieve achieves higher lithium loading rate and porosity through high-efficiency ion exchange and unique pore-making technology. Single ton molecular sieve can achieve higher oxygen production, especially under the condition of 93% high concentration oxygen production.

oxygen generation molecular sieve