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In 1960, an industrialized device for large-scale pressure swing adsorption air separation was completed.
In 1961, a high-purity normal paraffin solvent was recovered from naphtha by a pressure swing adsorption separation process and named as Isosiv process. In 1964, the process of recovering normal paraffins from the kerosene fraction was improved.
In 1966, a four-tower process unit for hydrogen extraction using pressure swing adsorption technology was built. After the 1970s, multi-tower operations of four or more towers were used, and large-scale and large-scale development was carried out.
In 1970, an industrial plant for separating and recovering oxygen was built, which was used for the biochemical needs of environmentally friendly industrial wastewater treatment. At the same time, it is widely used to extract normal paraffins from naphtha, and then isomerized to add the isomerized product to the gasoline fraction to improve the octane Hysomer process.
In 1975, it was put into a medical oxygen-enriched concentrator. In 1976, a process of carbon-pressure molecular sieve pressure swing adsorption for nitrogen production was developed and industrialized, followed by vacuuming nitrogen production using 5A zeolite molecular sieve. By 1983, Germany introduced a carbon molecular sieve with excellent performance for nitrogen production. By 1979, about half of the air dryers used Skarstrom's pressure swing adsorption process. Pressure swing adsorption is more effective for drying air or industrial gases than temperature swing adsorption. In 1980, a rapid pressure swing adsorption process (also known as parametric pump pressure swing adsorption) was developed.
Since the 1990s, due to the power shortage, pressure swing adsorption oxygen has occupied a place in the field of steelmaking.
Oxygen machine development history
The history of oxygen generators First, in 1958, Skarstorm applied for a patent and applied this technology to separate air. At the same time, Gerinde Montgareuil and Domine also applied for patents in France. The difference between the two is that the Skarstorm cycle is desorbed with a portion of the low pressure light product component after the bed is saturated, while the Gerin-Domine cycle is desorbed by vacuuming.