Two-Stage Catalytic Abatement of N<sub>2</sub>O Emission in Nitric Acid Plants
Different variants for abatement of N<sub>2</sub>O 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 N<sub>2...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-09-01
|
| Series: | Catalysts |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4344/10/9/987 |
| _version_ | 1797555013039423488 |
|---|---|
| author | Marek Inger Bartosz Moszowski Monika Ruszak Jakub Rajewski Marcin Wilk |
| author_facet | Marek Inger Bartosz Moszowski Monika Ruszak Jakub Rajewski Marcin Wilk |
| author_sort | Marek Inger |
| collection | DOAJ |
| description | Different variants for abatement of N<sub>2</sub>O 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 N<sub>2</sub>O emission in nitric acid plants was proposed: by high-temperature decomposition in the nitrous gases stream (HT-deN<sub>2</sub>O) and low-temperature decomposition in the tail gas stream (LT-deN<sub>2</sub>O). The selection of the optimal variant for abatement of N<sub>2</sub>O 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 deN<sub>2</sub>O technologies, taking into account their technological constraints (dimensions of the catalyst bed), allows for a greater abatement of N<sub>2</sub>O emission, than the use of only one technology. This solution may be economically advantageous regarding the high prices of CO<sub>2</sub> emission allowances. |
| first_indexed | 2024-03-10T16:40:10Z |
| format | Article |
| id | doaj.art-dac34e6b56804fe3afa5698254c0935b |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T16:40:10Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-dac34e6b56804fe3afa5698254c0935b2023-11-20T12:07:12ZengMDPI AGCatalysts2073-43442020-09-0110998710.3390/catal10090987Two-Stage Catalytic Abatement of N<sub>2</sub>O Emission in Nitric Acid PlantsMarek Inger0Bartosz Moszowski1Monika Ruszak2Jakub Rajewski3Marcin Wilk4Łukasiewicz Research Network—New Chemical Syntheses Institute, Al. Tysiąclecia Państwa Polskiego 13a, 24-110 Puławy, PolandGrupa Azoty Zakłady Azotowe Kędzierzyn S.A., Mostowa 30a, 47-220 Kędzierzyn-Koźle, PolandŁukasiewicz Research Network—New Chemical Syntheses Institute, Al. Tysiąclecia Państwa Polskiego 13a, 24-110 Puławy, PolandŁukasiewicz Research Network—New Chemical Syntheses Institute, Al. Tysiąclecia Państwa Polskiego 13a, 24-110 Puławy, PolandŁukasiewicz Research Network—New Chemical Syntheses Institute, Al. Tysiąclecia Państwa Polskiego 13a, 24-110 Puławy, PolandDifferent variants for abatement of N<sub>2</sub>O 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 N<sub>2</sub>O emission in nitric acid plants was proposed: by high-temperature decomposition in the nitrous gases stream (HT-deN<sub>2</sub>O) and low-temperature decomposition in the tail gas stream (LT-deN<sub>2</sub>O). The selection of the optimal variant for abatement of N<sub>2</sub>O 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 deN<sub>2</sub>O technologies, taking into account their technological constraints (dimensions of the catalyst bed), allows for a greater abatement of N<sub>2</sub>O emission, than the use of only one technology. This solution may be economically advantageous regarding the high prices of CO<sub>2</sub> emission allowances.https://www.mdpi.com/2073-4344/10/9/987catalytic N<sub>2</sub>O decompositionnitric acid plantssecondary catalysttertiary catalyst |
| spellingShingle | Marek Inger Bartosz Moszowski Monika Ruszak Jakub Rajewski Marcin Wilk Two-Stage Catalytic Abatement of N<sub>2</sub>O Emission in Nitric Acid Plants Catalysts catalytic N<sub>2</sub>O decomposition nitric acid plants secondary catalyst tertiary catalyst |
| title | Two-Stage Catalytic Abatement of N<sub>2</sub>O Emission in Nitric Acid Plants |
| title_full | Two-Stage Catalytic Abatement of N<sub>2</sub>O Emission in Nitric Acid Plants |
| title_fullStr | Two-Stage Catalytic Abatement of N<sub>2</sub>O Emission in Nitric Acid Plants |
| title_full_unstemmed | Two-Stage Catalytic Abatement of N<sub>2</sub>O Emission in Nitric Acid Plants |
| title_short | Two-Stage Catalytic Abatement of N<sub>2</sub>O Emission in Nitric Acid Plants |
| title_sort | two stage catalytic abatement of n sub 2 sub o emission in nitric acid plants |
| topic | catalytic N<sub>2</sub>O decomposition nitric acid plants secondary catalyst tertiary catalyst |
| url | https://www.mdpi.com/2073-4344/10/9/987 |
| work_keys_str_mv | AT marekinger twostagecatalyticabatementofnsub2suboemissioninnitricacidplants AT bartoszmoszowski twostagecatalyticabatementofnsub2suboemissioninnitricacidplants AT monikaruszak twostagecatalyticabatementofnsub2suboemissioninnitricacidplants AT jakubrajewski twostagecatalyticabatementofnsub2suboemissioninnitricacidplants AT marcinwilk twostagecatalyticabatementofnsub2suboemissioninnitricacidplants |