Device for catalytic NOx reduction.

摘要

For the effective catalytic reduction of NOx from oxygen-containing exhaust gases using urea, a device is proposed which contains a hydrolysis catalyst (3 and 4), which is composed of fine flow channels, which admit part-streams through diversions and through holes or slots, which part-streams are oriented approximately perpendicularly to the main stream. By this means, a uniform distribution of the urea solution and very rapid heating of the solution is to be effected. The urea solution can be quantitatively converted in this manner into ammonia and carbon dioxide without formation of harmful byproducts.