Two-Stage Catalytic Abatement of N2O Emission in Nitric Acid Plants
| Autor: | Marcin Wilk, Bartosz Moszowski, Monika Ruszak, Jakub Rajewski, Marek Inger |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
tertiary catalyst
lcsh:Chemical technology 010402 general chemistry 01 natural sciences Catalysis lcsh:Chemistry Ammonia chemistry.chemical_compound Nitric acid High activity lcsh:TP1-1185 Physical and Theoretical Chemistry 010405 organic chemistry Turboexpander catalytic N2O decomposition Pilot scale secondary catalyst Pulp and paper industry Decomposition 0104 chemical sciences nitric acid plants lcsh:QD1-999 chemistry Environmental science Stage (hydrology) |
| Zdroj: | Catalysts Volume 10 Issue 9 Catalysts, Vol 10, Iss 987, p 987 (2020) |
| ISSN: | 2073-4344 |
| DOI: | 10.3390/catal10090987 |
| Popis: | Different variants for abatement of N2O emission from nitric acid plants with the use of catalysts developed at Łukasiewicz-INS were analyzed. Activity tests on a pilot scale confirmed the high activity of the studied catalysts. A two-stage catalytic abatement of N2O emission in nitric acid plants was proposed: by high-temperature decomposition in the nitrous gases stream (HT-deN2O) and low-temperature decomposition in the tail gas stream (LT-deN2O). The selection of the optimal variant for abatement of N2O emission depends on the individual characteristics of the nitric acid plant: ammonia oxidation parameters, construction of ammonia oxidation reactor and temperature of the tail gas upstream of the expansion turbine. It was shown that the combination of both deN2O technologies, taking into account their technological constraints (dimensions of the catalyst bed), allows for a greater abatement of N2O emission, than the use of only one technology. This solution may be economically advantageous regarding the high prices of CO2 emission allowances. |
| Databáze: | OpenAIRE |
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