MONOLITHIC CATALYST FOR PURIFYING EXHAUST GAS

PURPOSE:To use effectively the title catalyst without any waste by providing a plugging member on the end surface of the monolithic catalyst carrier on the inflowing side of exhaust gas, and making the amt. of catalyst to be deposited on the part of the catalyst carrier at the inside of the plugging...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TSUJI MASATO, MATSUMOTO SHINICHI, AKASAKA NAOKI, SOFUE KAZUAKI, FUJISHIMA KATSUYOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES THEIR RELEVANT APPARATUS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To use effectively the title catalyst without any waste by providing a plugging member on the end surface of the monolithic catalyst carrier on the inflowing side of exhaust gas, and making the amt. of catalyst to be deposited on the part of the catalyst carrier at the inside of the plugging member smaller than that of the other part of the catalyst carrier. CONSTITUTION:A nozzle N is set in a small hole 12 at the outer peripheral pat of the end surface 10a on the exhaust gas inflowing side of a monolithic catalyst carrier 10 for purifying exhaust gas, and an alumina slurry to be used as a plugging member is charged from the nozzle N. The carrier 10 is then inverted, and hot air is blown in from the bottom to dry the slurry. After drying, the alumina slurry is calcined and solidified to plug the small hole 12 with a plugging member 13. Meanwhile, the alumina slurry to be used as the plugging member is likewise charged into the small hole 12 at the outer peripheral part of the end surface 10b on the exhaust the small hole 12 at the outer peripheral part of the end surface 10b on the exhaust gas outflowing side with the plugging member 13.