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This is the original version (as it was originally adopted).
Technique | Applicability | |
---|---|---|
a | Use a simple and linear site layout of the installation | Applicable to new plants only |
b | Enclose/encapsulate dusty operations, such as grinding, screening and mixing | Generally applicable |
c | Cover conveyors and elevators, which are constructed as closed systems, if diffuse dust emissions are likely to be released from dusty material | |
d | Reduce air leakages and spillage points | |
e | Use automatic devices and control systems | |
f | Ensure trouble-free operations | |
g | Ensure proper and complete maintenance of the installation using mobile and stationary vacuum cleaning.
| |
h | Ventilate and collect dust in fabric filters:
| |
i | Use closed storage with an automatic handling system:
| |
j | Use flexible filling pipes for dispatch and loading processes, equipped with a dust extraction system for loading cement, which are positioned towards the loading floor of the lorry |
Technique | |
---|---|
a | Cover bulk storage areas or stockpiles or enclose them with screening, walling or an enclosure consisting of vertical greenery (artificial or natural wind barriers for open pile wind protection) |
b | Use open pile wind protection:
|
c | Use water spray and chemical dust suppressors:
|
d | Ensure paving, road wetting and housekeeping:
|
e | Ensure humidification of stockpiles:
|
f | Match the discharge height to the varying height of the heap, automatically if possible or by reduction of the unloading velocity, when diffuse dust emissions at the charging or discharging points of storage sites cannot be avoided |
This section concerns dust emissions arising from dusty operations other than those from kiln firing, cooling and the main milling processes. This covers processes such as the crushing of raw materials; raw material conveyors and elevators; the storage of raw materials, clinker and cement; the storage of fuels and the dispatch of cement.
For dusty operations, dry flue-gas cleaning with a filter usually consists of a fabric filter. A description of fabric filters is provided in Section 1.5.1.
The BAT-AEL for channelled dust emissions from dusty operations (other than those from kiln firing, cooling and the main milling processes) is < 10 mg/Nm3, as the average over the sampling period (spot measurement, for at least half an hour).
It should be noted that for small sources (< 10 000 Nm3/h) a priority approach, based on the maintenance management system, regarding the frequency for checking the performance of the filter has to be taken into account (see also BAT 5).
a A description of the techniques is given in Section 1.5.1. | ||
Techniquea | Applicability | |
---|---|---|
a | Electrostatic precipitators (ESPs) | Applicable to all kiln systems |
b | Fabric filters | |
c | Hybrid filters |
The BAT-AEL for dust emissions from flue-gases of kiln firing processes is <10 – 20 mg/Nm3, as the daily average value. When applying fabric filters or new or upgraded ESPs, the lower level is achieved.
a A description of the techniques is given in Section 1.5.1 | ||
Techniquea | Applicability | |
---|---|---|
a | Electrostatic precipitators (ESPs) | Generally applicable to clinker coolers and cement mills. |
b | Fabric filters | Generally applicable to clinker coolers and mills |
c | Hybrid filters | Applicable to clinker coolers and cement mills. |
The BAT-AEL for dust emissions from the flue-gases of cooling and milling processes is <10 – 20 mg/Nm3, as the daily average value or average over the sampling period (spot measurements for at least half an hour). When applying fabric filters or new or upgraded ESPs, the lower level is achieved.
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