| 摘要 |
<p>PURPOSE:To selectively separate a specific gas from mixed gas by carrying out adsorption/separation operation after the carrying-out of equalization for the time of 1/8-1/2 adsorbing separation time when the changing-over from regeneration process to adsorption process is carried out by using a three way valve for the changing-over of flow passage. CONSTITUTION:Before the adsorption process in an adsorption tower A11 and the regeneration process in an adsorption tower B11 are changed over to the next reverse processes, a valve V13 is opened and a valve V11 is closed to carry out the equalizing process in which the product air of high pressure in the tower A11 is transferred to the tower B11. Thus, the pressure of the tower B11 is raised in advance before next adsorbing operation, and then the valve V13 is closed and a valve V12 is opened to atmosphere so that a check valve C1 is opened to right side and closed to left side, and the air 11 of high pressure is introduced into the tower B11, and adsorption process is carried out. The product gas 16 from the tower B11 is recovered as product gas 13 through a check valve C2. At this time, a check valve C2 is opened to right side and closed to left side by the pressure of the product gas 16.</p> |
