Modernization of INA refineries in Sisak and Rijeka, that is currently under way, will guarantee long-term sustainable growth and development of refining capacities, production of EURO V standard fuels and a stronger position in our traditional and new markets and an increase in capacity resulting in a higher capacity utilization, efficiency and profitability of refinery processing while simultaneously meeting EU standards of environment protection.
A new desulphurization plant (Claus) started operations in the Sisak Refinery in September 2007, with the environmental impact being a maximum reduction in sulphurhydrogen and sulphurdioxide emissions from the refinery fuel oil system. The impact of Claus can be seen in the reduced emissions of these gases into the environment, as data recorded show a 50.9% reduction in SO2 concentrations and a 12.5% reduction in H2S concentrations compared to earlier results.
In 2009 the FCC gasoline hydrodesulphurization plant (HDS FCC gasoline) has started operations, while Isomerization plant will be soon puted into operation.
At the ceremony organized on February 12 in Rijeka Refinery, the completion of the investment project within the first phase of Rijeka Refinery modernization were formally put into operation. The first phase of Rijeka Refinery modernization included three facilities within Hydrocracking complex and other supporting facilities and installations. The facilities are: Mild hidrocracking, Hydrogen unit and Desulphurization plant (Claus) as well as numerous supporting facilities and installations.
Total investment into first phase of Rijeka Refinery modernization is close to EUR 400 million.
The center facility of the complex is Hydrocracking/Hydrodesuphurization.
Through the hydro cracking of heavy hydrocarbons we will get lighter products, and by the hydrodesulphurization of these lighter products - EURO V fuels. Hydrogen unit is designed for supplying of Hidrocracking plant with high purity hydrogen. Besides hydrogen, the plant produces also high pressure steam that is used for production of electricity. Desulphurization plant in the first phase processes the amine acid gas and sour gas with high level of ammonia. This plant is able to isolate at least 99.8% of the sulphur present in the total input.
A plant to process heavy residues is planned to be built during the second phase of the modernization project.