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sector:ippu:chemical_industry:nitric_acid_production:start [2021/02/25 12:53] – [Short description] Key Category table added & updated: NOx is KC only by L (was L/T) gniffke | sector:ippu:chemical_industry:nitric_acid_production:start [2023/04/26 13:23] (current) – [Recalculations] reichel | ||
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===== Short description ===== | ===== Short description ===== | ||
- | ^ Category Code ^ Method | + | ^ Category Code ^ Method |
- | | 2.B.2 | T2 ||||| PS ||||| D ||||| | + | | 2.B.2 | T2 |
- | ^ | + | ^ |
- | | 2.B.2 | - | + | | Key Category: |
{{page> | {{page> | ||
- | During the production of nitric acid, nitrogen oxide occurs | + | During the production of nitric acid (HNO< |
* Oxidation of NH< | * Oxidation of NH< | ||
* Conversion of NO to NO< | * Conversion of NO to NO< | ||
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**Catalytic oxidation of ammonia** | **Catalytic oxidation of ammonia** | ||
- | A mixture of ammonia and air at a ratio of 1:9 is oxidised, in the presence of a platinum catalyst alloyed with rhodium and/or palladium, at a temperature of between 800 and 950 °C. The related | + | A mixture of ammonia and air at a ratio of 1:9 is oxidised, in the presence of a platinum catalyst alloyed with rhodium and/or palladium, at a temperature of between 800 and 950 °C. The reaction according to the Oswald process is as follows: |
4 NH< | 4 NH< | ||
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4 NH< | 4 NH< | ||
+ | |||
4 NH< | 4 NH< | ||
All three oxidation reactions are exothermic. Heat may be recovered to produce steam for the process and for export to other plants and/or to preheat the residual gas. The reaction water is condensed in a cooling condenser, during the cooling of the reaction gases, and is then conveyed into the absorption column. | All three oxidation reactions are exothermic. Heat may be recovered to produce steam for the process and for export to other plants and/or to preheat the residual gas. The reaction water is condensed in a cooling condenser, during the cooling of the reaction gases, and is then conveyed into the absorption column. | ||
- | ===== Methodology | + | ===== Method |
+ | In Germany, there are currently nine nitric acid plants. | ||
==== Activity data ==== | ==== Activity data ==== | ||
- | As this source category is a key category for N< | + | As this source category is a key category for N< |
- | These data are made available basically via a co-operation agreement with the nitric acid producers and the IVA (Industrieverband Agrar). As the data provided by the producers has to be treated as confidential, | + | This data is made available basically via a co-operation agreement with the nitric acid producers and the IVA (Industrieverband Agrar). As the data provided by the producers has to be treated as confidential, |
- | According to the IVA, catalytic reduction is used as a reduction | + | According to the IVA, catalytic reduction is used as an abatement |
==== Emission factors ==== | ==== Emission factors ==== | ||
- | For NO< | + | Different T2 default |
- | ===== Recalculations ===== | + | __Table 1: Tier 2 emission factors of NO< |
+ | ^ EF | ||
+ | | 7.5 | medium pressure process | ||
+ | | 3 | high pressure process | ||
+ | | 0.4 | low, medium and high pressure process, catalytic reduction | ||
- | With **activity data** and **emission factors** remaining unrevised, no recalculations have been carried out compared to last year's submission. | + | |
+ | ===== Recalculations ===== | ||
<WRAP center round info 60%> | <WRAP center round info 60%> | ||
- | For pollutant-specific information on recalculated emission estimates for Base Year and 2018, please see the pollutant specific recalculation tables following [[general:recalculations: | + | With **activity data and emission factors remaining unrevised**, no recalculations |
</ | </ | ||
+ | |||
===== Planned improvements ===== | ===== Planned improvements ===== | ||
- | Germany is in contact with the IVA with the aim to get a Country-specific | + | No category-specific |