| 摘要 |
PURPOSE:To reduce the amount of purge gas used by purging a fuel cell accommodation vessel with gas, by purifying exhausted purge gas, and recycling purified gas into the accommodation vessel. CONSTITUTION:An exhausted purge gas from a fuel cell accommodation vessel 1 is introduced into a cooler 2 through a purge gas outlet passage 6, and cooled purge gas is supplied to a purifier 3 to remove impurities, then purified gas is introduced into an absorbing tower 4 through a purified gas outlet passage 7. In the absorbing tower 4, hydrogen in the gas is absorbed and the gas from the absorbing tower 4 is supplied again to the fuel cell accommodation vessel 1 through a regenerated purge gas inlet passage 9. In the normal operation of the fuel cell, valves 12, 13 are opened and valves 11, 14 are closed. Almost all purge gas is recycled and the amount of fuel cell accommodation vessel purge gas used can be reduced. |
