We adopt the best strategies and use the most modern technologies to reduce emissions of air pollutants for the protection of air quality.
We are committed to applying the Best Available Techniques (BATs) and the best procedural standards for emissions reduction and the control of the main atmospheric pollutants: nitrogen and sulphur oxides, particulate matter, carbon monoxide and aromatic compounds. In line with environmental permits (e.g. VIA, AIA), some facilities, located in particularly sensitive areas, have adopted targeted measures to control and contain dust as well as odorous emissions: “The management of odorous emissions (PDF, only Italian version).
We apply the best techniques and standards to reduce emissions and control the major atmospheric pollutants.
Among the main atmospheric pollutants associated with industrial activities are the nitrogen (NOx) and sulphur (SOx) oxides: the first derives from the typical features of the combustion process (oxygen and temperature), the second from sulphur oxidation in fossil fuels. In 2017, NOx emissions, of which 79% is referred to E&P remained around the same (-0.7%) compared to 2016 since the increase in E&P was offset by decreases in other sectors.
In E&P in particular, emissions have increased in absolute terms (+1,202 tNO2eq in relation to the growth in production and flaring emissions), but production emissions have fallen (-7% for the related rate), while the G&P and R&MC sectors recorded a fall in both absolute terms (-1,173 tNO2eq in G&P and -425 tNO2eq in R&MC) and with regard to production (-6% due to the specific emission factor of EniPower, thanks to the high running of plants and full operation of the VeLoNOx burners).
SOx emissions fell yet again (-6.5%, equal to approximately -580 tSO2eq compared to 2016). The trend is mainly attributable to the E&P sector where the emissions dropped significantly in Libya (over -1,770 tSO2eq due to the fall in flaring at the Mellitah Complex). Emissions also fell in G&P (-30% due to the site stoppage lasting several months for LNG Shipping vessels).
In the R&MC sector, where the parameter increased overall (+18.9%), a significant drop in emissions in Versalis was recorded (-60%), due to the reduction in the use of low sulphur oil in the boilers at the Dunkirk site to improve performance of the cracking plant, and a growth trend at refineries (+22.6% equal to over +940 tSO2eq) particularly due to the contribution of Sannazzaro (different type of crudes processes), Taranto (stoppages and restarts due to maintenance work and a different processing cycle structure for the RHU) and Livorno (annexing of the EniPower power station during 2016).
NMVOC and TSP emissions have grown (+34.8% and +2.9% compared to 2016, respectively), exclusively due to the trends in the E&P sector where emissions have increased in relation to the increases in production and flaring emissions. Both parameters in all the other sectors are falling.
|NOx (nitrogen oxides) emissions||(tonnes NO2 eq)||70,346||56,003||55,607|
|NOx emissions/100% operated hydrocarbon gross production (E&P)||(tonnes NO2eq/kboe)||0.453||0.327||0.303|
|NOx emissions of NOx/kWheq (EniPower)||(g NO2eq/kWheq)||0.138||0.125||0.117|
|SOx (sulphur oxides) emissions||(tonnes SO2 eq)||10,707||8,946||8,368|
|SOx emissions/100% operated hydrocarbon gross production (E&P)||(tonnes SO2eq/kboe)||0.034||0.035||0.022|
|SOx emissions/kWheq (EniPower)||(g SO2eq/kWheq)||0.0009||0.0010||0.0003|
|SOx emissions/crude oil processing and semi-processed oil (refineries) (a)||(tonnes SO2eq/kt)||0.294||0.212||0.281|
|NMVOC (Non Methane Volatile Organic Compounds) emissions||(tonnes)||20,559||15,944||21,498|
|TSP (Total Suspended Particulate) emissions||1,823||1,447||1,488|
|Air protection expenditures and investments (b)||(€ million)||51.27||47.18||55.07|
|- of which current costs||20.98||22.08||22.82|
|- of which investments||30.29||25.10||32.25|
(a) The index refers to traditional refineries: Livorno, Sannazzaro, Taranto and Gela in 2014; Livorno, Sannazzaro and Taranto since 2015.
(b) The value is included in the environmental expenditures and investments set out in the “HSE Management System Certification and Expenses” table.
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