NOx-reducing catalyst with temperature regulation of exhaust...

Details NOx-reducing catalyst with temperature regulation of exhaust... NOx-reducing catalyst with temperature regulation of exhaust...

2005-01-25

2005-01-25

Tran, Binh (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S274000, C060S286000, C060S298000, C060S320000

Reexamination Certificate

active

06845612

ABSTRACT:
Method and arrangement for treatment of a gas-flow in connection with a NOxreducing catalyst (18) that include guiding the gas-flow through an exhaust gas treatment unit (18) having several ducts (21) with exchange of heat between the ducts (21). The ducts (21) are connected to an inlet and an outlet, respectively, at the exhaust gas treatment unit (18) so that the gas-flow occurs during exchange of heat between incoming and outgoing flows. Reduction of NOxcompounds in the gas-flow is accomplished by means of the NOxreducing catalyst (18). An adaptation of the temperature of the exhaust gas treatment unit (18) is affected to the prevailing operating condition of the NOxreducing catalyst (18). The method and apparatus enable provision of the required exhaust gas temperature for NOxreduction, while also accommodating the temperature limitations imposed by sulphur absorption and regeneration subsystems.

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