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Abstract: In order to solve hypoxic problems in high altitude area and ensure workers life safety, a new cycle named as Low Pressure Swing Adsorption for oxygen concentration was proposed. In this cycle, the high efficiency liking Vacuum Pressure Swing Adsorption was obtained but the vacuum was not used. The relationship between oxygen concentration and oxygen flux was revealed. And the matching air content curve in different altitudes was acquired. Basing on the experiment data, the life safety system with oxygen supplied for workers was suggested. After using this system, the oxygen partial pressure of the tunnel face could be enhanced by 2 – 3kPa and the incidence of AMS in the workers decreased significantly, blood oxygen saturation increased, pulse rate and breaths per minute decreased. [Copyright &y& Elsevier]

Abstract: Carbon dioxide is one of greenhouse gases. The development and application of carbon dioxide capture storage technology can not only alleviate the current pressure on the environment of global warming, but also can bring huge economic benefits. At present, the commonly methods of carbon dioxide separation are chemical absorption, physical absorption, membrane separation and adsorption separation. These Separation methods all have own characteristics in economy, selectivity and applicability. But Chemical Absorption Method and PSA are used more widely in industry. So several capture methods by chemical absorption or PSA were suggested for carbon dioxide emission form flue gas in coal-fired power plant, exhaust gas of industrial furnace or biogas. [Copyright &y& Elsevier]