Removal of laughing gas in nitric acid production
AssigneeUhde GmbH
InventorsMeinhard Schwefer, Rainer Maurer, Thomas Turek
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Abstract
A method and device for removal of N2O in nitric acid production are disclosed. The device is arranged after a heat exchanger, post ammonia burning, before the absorption tower and contains a catalyst, which essentially comprises one or several iron-loaded zeolites.
Claims13
An apparatus for eliminating N2O during nitric acid production, characterized in that this has been arranged downstream of a heat exchanger after ammonia combustion and upstream of the absorption column, and includes a catalyst which is substantially composed of one or more iron-loaded zeolites.
A process for removing N2O during nitric acid production, by passing the reaction gas from ammonia combustion over a catalyst which is substantially composed of one or more iron-loaded zeolites, the arrangement of the catalyst being such that its location is downstream of a heat exchanger after ammonia combustion but upstream of entry into the absorption column.
Dependencies are inferred from the claim text.