PURPOSE: To lower the ignition point to a large extent, by introducing 'H2' and air into a preheater for a short time before a gas containing 'CO' and 'H2' contacts a catalyst.
CONSTITUTION: An air (21), flowing through a flow path 1, is heated up to a predetermined temperature by a preheater 7, and is fed into a catalyst burner 9 via a flow path 8. A catalyst 10 contacts the preheated air, and its temperature approaches the gas temperature over time. In this case, first a valve 13 is opened, 'H2' is mixed with the air flowing through flow paths 3, 5 and 6, and combustion is started. When a fed seconds or a fed minutes have passed after the valve 13 is opened, a valve 12 is opened at the same time the valve 13 is closed, and a blast furnace gas 'BFC', passing through flow paths 2, 4 and 6, is injected into the air. A mixed gas of air and 'BFG' contacts the catalyst 10 to be burned, via the preheater 7 and the flow path 8. The ignition point (22) of 'CO' containing gas can be greatly lowered by means of injecting 'H2' in advance for a short time.
TEJIMA NOBUE
KONISHI KUNIHIKO
NAGAMINE SHOGO
| JPS52132338A | 1977-11-07 |
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