摘要:
PROBLEM TO BE SOLVED: To provide a PSA type nitrogen gas manufacturing method, a gas separation method and a nitrogen gas manufacturing apparatus in which yield and capacity are improved as compared with conventional apparatus, downsizing is achieved and power saving is also achieved.SOLUTION: In the nitrogen gas manufacturing method for manufacturing nitrogen gas from material gas by a PSA system, the oxygen concentration in recovery gas derived from main adsorption tanks in a decompression/equalization step is reduced by a second adsorbent 15 filled in a sub adsorption tank 6 arranged in a line for connecting two main adsorption tanks 4, 5 filled with a first adsorbent, and the gas is introduced into the main adsorption tanks in a pressurization/equalization step.
摘要:
PROBLEM TO BE SOLVED: To provide a compressor capable of considerably simultaneously attaining compactness, weight-reduction, low noise, and low vibration, and an oxygen concentrator. SOLUTION: The compressor has a set of a first piston, a first eccentric cam, and a first cylinder chamber, a set of a second piston, a second eccentric cam, and a second cylinder chamber, a set of a third piston, a third eccentric cam, and a third cylinder chamber, and a set of a fourth piston, a fourth eccentric cam, and a fourth cylinder chamber. A first center axis common to the first piston and the second piston and a center axis common to the third piston and the fourth piston are provided to cross each other by mutually being shifted at 90°. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To reduce an exhaust gas used in a purge gas in regenerating an adsorbent and to improve product yield in pretreatment purification of material air by a TSA (temperature swing adsorption) method in cryogenic air separation. SOLUTION: This method of continuously purifying the material air while switching and using a plurality of adsorption vessels 5a, 5b filled with moisture adsorbents 20a, 20b for adsorbing water in the material air and carbon dioxide adsorbents 21a, 21b for adsorbing carbon dioxide, includes an adsorbing process, a pressure reducing process, a heating process, a cooling process, and a pressure charging process. In the heating process, an overall heating process for heating the carbon dioxide adsorbent and the moisture adsorbent by supplying the heated purge gas not including the water and carbon dioxide to an outflow side of the material air of the carbon dioxide adsorbent, and a partial heating process for heating the moisture adsorbent by supplying the heated ordinary air between the carbon dioxide adsorbent and the moisture adsorbent, are executed in parallel. COPYRIGHT: (C)2010,JPO&INPIT