To provide a new method for separating and recovering carbon monoxide in raw gas by which even if the concentration of CO in raw gas lowers, reduction in the amount of supplied gas can be suppressed.
When the concentration of CO in raw gas lowers to a substandard level, the amount of raw gas introduced is increased and its cycle time is made longer to raise the concentration of CO in product gas. Even if the concentration of CO in product gas does not still reach a standard level, the amount of purge gas is not increased at once. With the view to a margin for the concentration of CO in a supply gas tank, only when the concentration of CO does not exceed the standard level even by mixing the gas in the supply gas tank with the product gas, then, the amount of purge gas is increased. Since the amount of purge gas is not unnecessarily increased, even if the concentration of CO in raw gas lowers, reduction in the amount of supplied gas can be suppressed.
COPYRIGHT: (C)2008,JPO&INPIT
FUJII MASAYUKI
| JP2001087617A | 2001-04-03 | |||
| JP2002355518A | 2002-12-10 | |||
| JP2006015221A | 2006-01-19 | |||
| JPH0226608A | 1990-01-29 | |||
| JPS60155521A | 1985-08-15 | |||
| JP2003071231A | 2003-03-11 |
Yoshiaki Naito
Cui Shu Tetsu