• What are the emission limits defined by EU for large combustion plant?

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      espadmin

1. Environmental Legislation – Air

Emissions from Industrial Plants

COUNCIL DIRECTIVE 84/360/EEC was a framework directive, which established certain measures and procedures aimed at controlling and reducing emissions from industrial plants. Under the Directive, proposed industrial developments listed in Annex I had to obtain prior authorisation from designated national or regional authorities. This authorisation is subject to the proposed plant meeting specified requirements regarding air emissions:

  • the authorising body must be satisfied that all appropriate measures have been taken against air pollution (including the application of BATNEEC (Best Available Technologies Not Entailing Excessive Costs);

  • that the use of the plant will not cause significant air pollution (especially of substances listed in Annex II of the Directive);

  • that no emission limit values are exceeded, and that all relevant air quality values are taken into account. [2]

 

Large Combustion Plants

On 24 November 1988, Member States adopted the Large Combustion Plant Directive 88/609/EEC. This was the first Directive to be adopted under the framework Directive 84/360/EEC. The Directive imposed limits on emissions of sulphur dioxide, nitrogen oxides and dust from existing and new plants with a rated thermal input greater than 50 megawatts. The aim is to achieve a 58% reduction in SO2 emissions in the EU by 2003 together with a reduction in NOx emissions. In the case of existing plants, the Directive laid down procedures whereby these emissions could be gradually reduced. By 1 July 1990, Member States were to have established plans for the phased reduction of total annual emissions of SO2 and NOx from existing plants. [2]

 

COUNCIL DIRECTIVE 94/66 EC on the limitation of emissions of sulphur dioxide from large combustion plants amended Directive 88/609/EEC and set limit values for SO2 emissions from smaller combustion plants using solid fuels, in particular, coal. It established limit values of 2,000 milligrams of SO2 per cubic metre for some existing facilities and all new facilities with a capacity of between 50 and 100 thermal megawatts. (Ibid.)

The legislations in force (July 2001) for industrial plants and large scale combustion plants are Large Combustion Plants Directive 88/609/EEC, covers emissions of sulphur dioxide, nitrogen oxides and particulates and establishes targets for the reduction of total emissions from each Member State, and Air Pollution from Industrial Plants Directive 84/360/EEC. There is a new proposal Working document ENV/99/112 Proposal for a Directive amending Directive 88/609/EEC. The Directive 84/360/EEC will be replaced by the much broader IPPC Directive (Integrated Pollution Prevention and Control Directive 96/61/EEC) in 2007. [1]

 

New
coal fired boilers
mg/Nm3,
dry 6% O2 3)

New
biomass fired boilers
mg/Nm3,
dry 6% O2

New
oil fired boilers
mg/Nm3,
dry 3% O2

Emission/boiler size in MWth

EEC1)

EU2)

EEC1)

EU2)

EEC1)

EU2)

SO2

 

 

 

 

 

 


50 – 100

2000

850

2000

200

1700

850

 100
– 300

400

200

400

200

400

200


>300

400

200

400

200

400

NO2

 

 

 

 

 

 

100
– 300

650

400

650

350

450

400

>300

650

200

650

300

450

200

Dust

 

 

 

 

 

 

100
– 300

100

30

100

30

50

30

>300

50

30

50

30

50

30

 

 

New
natural gas fired boilers
mg/Nm3,
dry 3% O2

New
gas turbines/gas
mg/Nm3,
dry 15% O2

New gas turbine/light fuel oil

mg/Nm3,
dry 15% O2

Emission/boiler size in MWth

EEC1)

EU2)

EEC1)

EU2)

EEC1)

EU2)

NO2

 

 

 

 

 

 

100
– 300

350

150

50

120

>300

350

100

30

120

1)
Current LCP directive 88/609/EEC

2)
Proposed new LCP directive, Working document ENV/99/112 Proposal for a Directive amending Directive 88/609/EEC

3)
mg/Nm3,
Nm3 normalised cubic meter of gas at STP

 

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