Von Roll Umwelttechnik Ag

Holderbank Financiere Glarus Ag

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Hitachi Zosen Inova Ag

Ae&e Inova Ag

Ruedi Frey

Hans Ruegg

Alfred Edlinger

Theo Rey

Anton Mayer

Norbert Kiethe

Ernst Hugentobler

Sandrine Person

Adrian Schneider

Karl-Heinz Pflugl

Karl Heinz Pflugl

Roland Wyss

A process and device for purifying flue gases in refuse incineration plants during regeneration of a catalyst which serves for reducing nitrogen oxides, by, in a first step, removing acidic pollutant gases from the flue gas in a wet or dry manner, in a second step adding ammonia for reducing nitrogen oxides to the flue gas purified in the first step, in a third step feeding the flue gas admixed with the ammonia to a catalyst, where the catalyst is heated at a controlled heat-up rate for regeneration, which leads to liberation of ammonia, where the amount of ammonia added in the second step and the heat-up rate in the third step are controlled by the amount of a pollutant gas selected from the group of ammonia, and which the purified flue gas contains.

Regeneration of nt-scr catalysts

Process and apparatus for the 3-stage treatment of solid residues from

A process for the treatment of solid residue from a refuse incineration plant, involving:

Process for the treatment of solid residue from refuse incineration

Process and apparatus wherein nitrogen oxides NO.sub.x contained in waste gases produced by combustion of fossil fuels in a firing plant are removed by reacting the waste gases with ammonia NH.sub.3 to reduce the nitrogen oxides to elementary nitrogen N.sub.2 ; subjecting the waste gases after being so reacted to wet waste gas cleaning whereby the washing water removes the unreacted ammonia (slip) from the waste gas to produce slip enriched washing water; raising the pH value of the slip enriched washing water to a value of more than 10, introducing air into the pH raised slip enriched washing water to remove the slip from the water and produce an air-slip mixture and recycling the slip into the furnace to react with waste gases to lower the amount of ammonia discharged into the atmosphere.

Process and installation for the recovery of ammonia during the

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Effretikon, Switzerland

Ruedi Frey