EXHAUST GAS TREATMENT CATALYST, METHOD FOR PRODUCING EXHAUST GAS TREATMENT CATALYST, AND METHOD FOR REGENERATING EXHAUST GAS TREATMENT CATALYST

Provided is an exhaust gas treatment catalyst provided with a coating layer, which contains at least one compound selected from the group consisting of an alkali metal carbonate and an alkaline earth metal carbonate, on the surface of a denitration catalyst. In this method for regenerating the exhau...

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Main Authors KIYOSAWA, MASASHI, TAKAKURA, KYOHEI, YONEMURA, MASANAO, NOCHI, KATSUMI, DEMOTO, MASANORI
Format Patent
LanguageEnglish
French
Japanese
Published 23.05.2013
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Summary:Provided is an exhaust gas treatment catalyst provided with a coating layer, which contains at least one compound selected from the group consisting of an alkali metal carbonate and an alkaline earth metal carbonate, on the surface of a denitration catalyst. In this method for regenerating the exhaust gas treatment catalyst, the coating layer of the denitration catalyst to which VOSO4 has accumulated is removed using an acid, and after removing the coating layer, the coating layer, which contains at least one compound selected from the group consisting of an alkali metal carbonate and an alkaline earth metal carbonate, is provided again. L'invention porte sur un catalyseur de traitement de gaz d'échappement doté d'une couche de revêtement, qui contient au moins un composé choisi entre un carbonate de métal alcalin et un carbonate de métal alcalinoterreux, sur la surface d'un catalyseur de dénitration. Dans ce procédé pour la régénération du catalyseur de traitement de gaz d'échappement, la couche de revêtement du catalyseur de dénitration sur lequel du VOSO4 s'est accumulé est enlevée à l'aide d'un acide et après élimination de la couche de revêtement, la couche de revêtement, qui contient au moins un composé choisi entre un carbonate de métal alcalin et un carbonate de métal alcalinoterreux, est à nouveau formée.
Bibliography:Application Number: WO2011JP76500