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US 2014/0150410 A1Published application
Ammonia gas generator for producing ammonia in order to reduce nitrogen oxides in exhaust gases
AssigneeAlzchem AG
InventorsChristian Gerhart, Thomas Sattelmayer, Plamen Toshev
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Abstract
The present invention relates to an ammonia gas generator for generating ammonia from an ammonia precursor substance and to the use thereof for reducing nitrogen oxides in exhaust, in particular from industrial facilities, from combustion engines, from gas engines, from diesel engines or from petrol engines.
Claims15
-15. (canceled)
An ammonia gas generator (100) for generating ammonia from a solution of an ammonia precursor substance, comprising:
- a catalyst unit (70), which comprises a catalyst (60) for decomposing and/or hydrolysing ammonia precursor substances into ammonia and a mixing chamber (51) upstream from the catalyst (60), the catalyst (60) being of a catalyst volume VKat and the mixing chamber (51) being of a mixing chamber volume VMisch;
- an injection device (40) for introducing the solution of the ammonia precursor substance into the mixing chamber (51);
- and
- an outlet (80) for the ammonia gas which is formed,
- wherein the injection device (40) comprises a nozzle (41) which has a theoretical spray angle α of 10° to 90° and the distance of the nozzle opening (42) from the end face (61) of the catalyst (60) is from 15 to 2000 mm,
- and the ammonia gas generator comprises at least one thermal insulation layer (53).
3 more elements
Dependencies are inferred from the claim text.