CATALYST DEGRADATION PREVENTING APPARATUS AND LOW NOx COMBUSTION APPARATUS
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United States of America Patent
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Issued Date -
Dec 31, 2009
app pub date -
Mar 6, 2008
filing date -
Mar 15, 2007
priority date (Note) -
Abandoned
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Abstract
Provided is a catalyst degradation preventing apparatus, which is for a catalyst device containing a catalyst component that comes into contact with gas to chemically change the gas, in which the catalyst device is provided with a poisoning substance removing device on a primary side thereof, for removing a poisoning substance which is contained in the gas and adsorbs to the catalyst component or forms a compound with the catalyst component. Further, the poisoning substance removing device and the catalyst device are provided with an interval placed therebetween and to be exchangeable with each other, or a carrier of a component that adsorbs to the poisoning substance of the poisoning substance removing device or forms a compound with the poisoning substance and a carrier of a catalyst component of the catalyst device are integrally formed so as to be exchangeable. According to the apparatus, the decrease in performance of the catalyst device can be prevented, and the effect of low pollution can be retained for a long period of time.
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