CATALYTIC DEVICE FOR PURIFYING EXHAUST GAS FROM DIESEL ENGINE

PROBLEM TO BE SOLVED: To purify SOF (soluble organic fraction) in a broad temperature area and inhibit the generation of sulfate. SOLUTION: A first catalyst 2 which cracks SOF (soluble organic fraction) and hardly oxidizes SO2 is arranged on the upstream side of an exhaust gas flow path, and a secon...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	HACHISUGA ICHIRO, NAGAMI TETSUO
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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To purify SOF (soluble organic fraction) in a broad temperature area and inhibit the generation of sulfate. SOLUTION: A first catalyst 2 which cracks SOF (soluble organic fraction) and hardly oxidizes SO2 is arranged on the upstream side of an exhaust gas flow path, and a second catalyst 3 which has higher oxidation activity than the first catalyst 2 and can oxide and purify SOF which is cracked to a low molecular weight SOF by the first catalyst 2 is arranged on the downstream side of the exhaust gas flow path. The SOF is easily oxidizable through cracking by the first catalyst 2, and is oxidized/purified by the second catalyst 3. On the other hand, the SO2 is not oxidized by the first catalyst 2 and is hardly oxidizable by the second catalyst 3 as the temperature of the exhaust gas is low. Therefore, the generation of sulfate is inhibited.