The largest refinery in the Mediterranean: this is how the Saras Group refinery is known. It is also one of the six largest supersites in Europe, and one of its top five refineries. In an area of approximately 320 hectares, the refinery is equipped with advanced technology plants capable of handling both separation (such as distillation) and conversion processes (catalytic and thermal) and of adapting the different stages of the production cycle based on the characteristics of the crude oil to be processed, in order to yield oil products of high commercial and environmental quality.
In terms of technology, a key strength of our operations is the integration of the oil refining cycle with electricity generation: this allows the production site to maximise the conversion of raw materials into valuable products and energy.
The integrated production process, described in the Explore section, is developed through a series of units which, over the years, have been equipped with increasingly effective technologies and tools to improve production efficiency and environmental protection:
atmospheric distillation plants (topping) and vacuum distillation plants for raw materials, which produce the primary fractions (fuel gas, propane, butane, isopentane, virgin naphtha, heavy naphtha, kerosene, diesel)
conversion plants (Visbreaking, mild Hydrocracking 1 and 2, fluid catalytic cracking - FCC), where heavy hydrocarbons and distillates are converted into middle-light fractions; the heavy hydrocarbons (tar) are sent from the visbreaking plant to the IGCC plant
continuous catalytic reforming (CCR) plant, where light distillates (naphtha) are converted into high-octane components; the process also produces by-product hydrogen, which is used in desulphurisation processes
plants that improve the quality (alkylation) and performance of gasoline (TAME, Tertiary-Amyl-Methyl-Ether plant)
U800 unit, producing low-sulphur gasoline
PSA plants that purify the hydrogen used in the desulphurisation of motor diesel, with very low sulphur content.
Environmental protection units
desulphurisation units, in which middle distillates (kerosene and diesel) are subjected to catalytic hydrogenation processes to remove sulphur and improve product quality
DEA 1, 2, 3 and 4 plants that remove sulphur compounds (H2S) from non-condensable fuel gas which is then reused internally
Tail Gas Treatment Unit (TGTU), which treats tail gases, increasing the plant’s sulphur recovery and hence reducing sulphur dioxide emissions (SO2) to the atmosphere, which have been cut by over 45% since 2009.