| 摘要 |
PURPOSE:To operate a PSA device by a two-tower system not requiring a complicated sequence while saving the energy required for pressure rise and the consumption of raw fuel. CONSTITUTION:Of gaseous hydrogen contg. much carbon dioxide discharged without performing pressure equalizing operation after adsorption operation in a pressure swing adsorption method, the gaseous hydrogen holding 10 to 30 atm of gas pressure is subjected to decarbonation treatment to trun it into gas contg. much hydrogen from which hydrogen is recovered. And also a part of the gaseous hydrogen is subjected to pressure rise and cicrculating by a compressor of one stage, and a part of the circulated gas is fed to the pressure rise of a PSA device. Thus, hydrogen is recovered from gaseous hydrogen contg. much carbon dioxide by the PSA device operated by a two-tower system. |
