Method and apparatus for metering a reagent into a flowing mediu

Details Method and apparatus for metering a reagent into a flowing mediu Method and apparatus for metering a reagent into a flowing mediu

1994-11-04

1997-07-01

Warden, Jill

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

422 83, 422 90, 422 98, 422108, 422110, 422111, 422 62, 422 8201, 422 8202, 422171, 422176, 422177, 436 55, 436147, 436149, 60299, 324 711, 324722, 324446, 324439, 324450, G05B 101

Patent

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056435363

ABSTRACT:
A method for metering a reagent into a flowing medium includes adjusting a quantity of a reagent to be metered per unit of time into a flowing medium as a function of a thickness of a reaction zone in a catalytically active material. An apparatus for metering a reagent into a flowing medium includes a control unit, a device associated with the control unit for detecting a thickness of a reaction zone, and a metering device associated with the control unit for introducing a reagent into a flowing medium upstream of a catalytic converter as seen in flow direction of the medium. The control unit adjusts a quantity of the reagent to be metered into the flowing medium per unit of time by the metering device, as a function of a thickness of the reaction zone.

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