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| sector:ippu:metal_production:iron_and_steel_production:start [2023/04/19 09:13] – [Method] reichel | sector:ippu:metal_production:iron_and_steel_production:start [2023/04/28 08:14] (current) – [Recalculations] reichel | ||
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| **PAH** | **PAH** | ||
| - | In the 2021 review the application of a consistent methodology in reporting of PAH emissions in 2C1-iron and steel production was claimed. As there is not enough data available to report individual PAHs Germany decided to only report total-PAHs for the whole time. But for pig iron production a national total-PAH emission factor was missing. For that source the national inventory solely included BaP emissions. Due to the limitation of data the total-PAH emission factor for pig iron production was derived from the BaP emission factor on the basis of the following conservative ansatz (not changing the overall PAH emission trend): | + | In the 2021 review the application of a consistent methodology in reporting of PAH emissions in 2C1-iron and steel production was claimed. As there is not enough data available to report individual PAHs Germany decided to only report total-PAHs for the whole time. But for **pig iron production** a national total-PAH emission factor was missing. For that source the national inventory solely included BaP emissions. Due to the limitation of data the total-PAH emission factor for pig iron production was derived from the BaP emission factor on the basis of the following conservative ansatz (not changing the overall PAH emission trend): |
| Emissions of PAH depend on the coating material used. \\ | Emissions of PAH depend on the coating material used. \\ | ||
| - | __The emission factor in table 3.8 of the actual emission guidebook 2019 for pig iron production (2500 mg/t) is only valid for tar containing coating material and excluded abatement technics. Both assumptions are not appropriate for Germany.__ As tar-free materials are used for coating PAH emissions should not play any role. And the blast furnace gas is conducted and used. But as PAH emissions could not be surely ruled out and in order __to avoid an underestimation of PAH emissions in pig iron production the emission factor for total-PAH is set to the 10-fold of the BaP emission | + | The emission factor in table 3.8 of the actual emission guidebook 2019 for pig iron production (2500 mg/t) is only valid for tar containing coating material and excluded abatement technics. Both assumptions are not appropriate for Germany. As tar-free materials are used for coating PAH emissions should not play any role. And the blast furnace gas is conducted and used. But as PAH emissions could not be surely ruled out and in order to avoid an underestimation of PAH emissions in pig iron production the emission factor for total-PAH is set to the 10-fold of the BaP emission |
| =====Discussion of emission trends===== | =====Discussion of emission trends===== | ||
| Line 189: | Line 189: | ||
| ===== Recalculations ===== | ===== Recalculations ===== | ||
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| + | Recalculations were necessary for 2020 due to the implementation of the now finalised National Energy Balance. | ||
| <WRAP center round info 60%> | <WRAP center round info 60%> | ||