Method and catalyst for removal of nitrogen oxides in a flue gas
AssigneeHaldor Topsoe A/S
InventorJoakim Reimer Thøgersen
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Abstract
The invention relates to a method and a catalyst for removal of nitrogen oxides in a flue gas from a combustion engine or gas turbine by injecting a reducing agent and reducing the nitrogen oxides in the presence of a catalyst. The catalyst is a zeolite based catalyst on a corrugated monolithic substrate, the substrate has a density of 50-300 g/l and a porosity of at least 50%. The monolithic substrate is a paper of high silica content glass or a paper of E-glass fibre with a layer of diatomaceous earth or a layer of titania, and the catalyst is a Fe-β zeolite.
Claims15
A method for removal of nitrogen oxides in a combustion flue gas by injecting a reducing agent and reducing the nitrogen oxides in the presence of a catalyst
- characterised by that
- the catalyst is a zeolite based catalytic layer on a corrugated monolithic substrate, the substrate having a density between 50 g/l and 300 g/l and a wall porosity of at least 50%.
Dependencies are inferred from the claim text.