B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/62 (2006.01) B01J 8/02 (2006.01) B01J 8/04 (2006.01) B01J 19/00 (2006.01) C01B 3/58 (2006.01) H01M 8/06 (2006.01)
Patent
CA 2260648
A carbon monoxide concentration reducing apparatus that raises the internal temperature of a CO-selective oxidation unit carrying a selective oxidation catalyst in as short a time period as possible after the apparatus is started, and a driving method for the apparatus are disclosed. In addition to the selective oxidation catalyst, the CO-selective oxidation unit contains an oxidation catalyst. The oxidation catalyst is capable of facilitating oxidation of an oxidizable gas component of a hydrogen- rich gas, even at temperatures substantially equal to a normal room temperature. The oxidation catalyst is, for example, a platinum (Pt) catalyst. Even when the internal temperature of the CO-selective oxidation unit is substantially equal to a normal room temperature, the oxidizable gas component of the hydrogen-rich gas can be oxidized by oxygen contained in an oxidative gas, via the function of the Pt catalyst. Using heat produced by this oxidation, the temperature of the hydrogen-rich gas can be raised, so that the internal temperature of the CO-selective oxidation unit can be raised to a desired temperature.
Gowling Lafleur Henderson Llp
Toyota Jidosha Kabushiki Kaisha
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