1.9.1.2. Dust and PAH emissions U.K.
BAT 178.In order to reduce dust emissions to air from the storage, handling and transportation of coke and pitch, and mechanical processes (such as grinding) and graphitising and machining, BAT is to use a bag filter.U.K.
BAT-associated emission levels: See Table 51.
Table 51
BAT-associated emission levels for dust and BaP (as an indicator of PAH) emissions to air from the storage, handling and transportation of coke and pitch, and mechanical processes (such as grinding) and graphitising and machining
The associated monitoring is in BAT 10.
BAT 179.In order to reduce dust and PAH emissions to air from the production of green paste and green shapes, BAT is to use one or a combination of the techniques given below.U.K.
| a Descriptions of the techniques are given in Section 1.10. | |
| Techniquea | |
|---|---|
| a | Dry scrubber using coke as the adsorbent agent and with or without precooling, followed by a bag filter |
| b | Coke filter |
| c | Regenerative thermal oxidiser |
| d | Thermal oxidiser |
BAT-associated emission levels: See Table 52.
Table 52
BAT-associated emission levels for dust and BaP (as an indicator of PAH) emissions to air from the production of green paste and green shapes
The associated monitoring is in BAT 10.
BAT 180.In order to reduce dust and PAH emissions to air from baking, BAT is to use one or a combination of the techniques given below.U.K.
| a Descriptions of the techniques are given in Section 1.10. | ||
| Techniquea | Applicability | |
|---|---|---|
| a | ESP, in combination with a thermal oxidation step (e.g. regenerative thermal oxidiser) when highly volatile compounds are expected | Generally applicable |
| b | Regenerative thermal oxidiser, in combination with a pretreatment (e.g. ESP) in cases of a high dust content in the exhaust gas | Generally applicable |
| c | Thermal oxidiser | Not applicable to continuous ring furnaces |
BAT-associated emission levels: See Table 53.
Table 53
BAT-associated emission levels for dust and BaP (as an indicator of PAH) emissions to air from baking and rebaking
| a As an average over the sampling period. | |
| b The lower end of the range is associated with the use of a combination of an ESP and a regenerative thermal oxidiser. The higher end of the range is associated with the use of a thermal oxidiser. | |
| c The lower end of the range is associated with the use of a thermal oxidiser. The upper end of the range is associated with the use of a combination of an ESP and a regenerative thermal oxidiser. | |
| d For cathode production, the upper end of the range is 0,05 mg/Nm3. | |
| Parameter | BAT-AEL (mg/Nm3)a |
|---|---|
| Dust | 2-10b |
| BaP | 0,005-0,015c d |
The associated monitoring is in BAT 10.
BAT 181.In order to reduce dust and PAH emissions to air from impregnation, BAT is to use one or a combination of the techniques given below.U.K.
| a Descriptions of the techniques are given in Section 1.10. | |
| Techniquea | |
|---|---|
| a | Dry scrubber followed by a bag filter |
| b | Coke filter |
| c | Thermal oxidiser |
BAT-associated emission levels: See Table 54.
Table 54
BAT-associated emission levels for dust and BaP (as an indicator of PAH) emissions to air from impregnation
| a As an average over the sampling period. | |
| Parameter | BAT-AEL (mg/Nm3)a |
|---|---|
| Dust | 2-10 |
| BaP | 0,001-0,01 |
The associated monitoring is in BAT 10.