Reduction of air pollutant emissions is one of the Company’s top environmental priorities, with Gazprom Neft putting in place a large-scale programme to upgrade and retrofit its refining facilities, a programme to cut greenhouse emissions, and other environmental initiatives covering the entire production chain.
In 2018, gross emissions totalled 427.9 kt. The y-o-y growth was due to the extensive work as part of new upstream projects, including launch of new oil wells at Gazpromneft-Yamal, development of Gazpromneft-Vostok’s group of fields, new downhole logging and pilot operation projects at GPN-Development and Gazpromneft-Angara.
That said, specific emissions remained flat y-o-y.
By upgrading the existing facilities, Gazprom Neft is able to maintain specific emissions at the 2017 level.
In 2018, the Company continued with the second phase of the technology and environmental upgrades of its refineries, introducing equipment and technologies with lower environmental impact.
The key projects to reduce gross emissions include:
- construction of Gazpromneft Omsk Refinery’s regeneration gas treatment unit for the catalytic cracker;
- piloting of Chlorosorb, a new technology that will enable domestic refineries to recycle chloride and eliminate the use of caustic spent on gas scrubbing;
- construction of a new automatic on-spot loading unit for light products at Omsk Refinery;
- overhaul of the first process chain facilities at Omsk Refinery;
- overhaul of large processing ring facilities at Moscow Refinery.
Moscow Refinery continued building the Euro+ oil refining unit that will enable it to decommission five small processing ring facilities launched back in 1960s and cut pollution emissions. 2018 saw the Company complete the construction of a closed cycle high-temperature gas disposal system for Euro+. The technology helps eliminate excessive process gas, if any, in a safe and reliable manner through its full incineration in a closed protected fireproof chamber, with a zero impact on atmosphere.
Omsk Refinery completed the construction of a new automatic on-spot loading unit for light products started in 2016. The new unit virtually eliminates the risk of hydrocarbon vapours getting into atmosphere from loaded products and increases process safety. The facility replaced the open tank-car loading gallery with a leak-proof loading rack using vapour condensation technology. The project brought to a close the transformation of the loading system at Omsk Refinery that ships around 70% of petroleum products by rail.
Advanced Biosphere treatment facilities under construction at Omsk Refinery will greatly improve wastewater treatment and cut emissions and discharges. Among other things, the project provides for off-gas treatment in cutting-edge gas convection chambers, reusability of recovered petroleum products, and the use of nitrogen pads in tanks to prevent evaporations.