Today, Enel Russia inaugurated the modernized 500 MW Unit 7 at the Reftinskaya GRES coal-fired plant after a large-scale environmental retrofitting. The Unit is now up and running after successfully completing its testing phase. For the first time in Russia fabric filters were installed at a power plant. The filters will lead to a reduction in ash emissions from Unit 7 by roughly 99.9%, equivalent to the saving of up to more than 10,000 tons of emissions per year. The project was implemented within the framework of Enel Russia’s Environmental Program, as part of the Agreement for Environmental Cooperation signed by Enel Russia and the Government of the Sverdlovsk Region in 2011.
The modernized Unit 7 was inaugurated in the presence of Chairman of the Government of Sverdlovsk region Denis Pasler, Minister of Environmental Protection of the Sverdlovsk region Alexey Kuznetsov, as well as Enel Russia General Manager Carlo Palasciano Villamagna.
Carlo Palasciano Villamagna, General Manager of Enel Russia, commented: “Modernization of the existing generation facilities and improvement of their environmental performance are among the most important tasks that the energy sector is facing today. Enel Russia is committed to bringing forward its environmental retrofitting program at Reftinskaya GRES, despite the current challenging environment, through the introduction of new technologies and by contributing to the modernization and overall development of the Russian energy system.”
Enel Russia’s Environmental Program envisages a gradual refurbishment and installation of the new fabric filters at all the units of Reftinskaya GRES. Two more 300 MW units equipped with the new fabric filters are expected to be put into operation this year.
The recently concluded Unit 7 modernization works have helped improve reliability and efficiency of the overall unit, as well as considerably decreasing the heat rate. Within the retrofitting, alongside the installation of fabric filters, namely 16,800 ash-catching bags that achieve the best filtration of the flue gases, a new generator was installed at Unit 7. Moreover, both the gas ducts and the sealing system of the regenerative air preheater were modernized, resulting in a decrease of air flows from the air section of the preheater to the gas section by 2.5-3 times that leads to a lower rate of own electricity use and a significant increase in the boiler’s efficiency. All insulating materials used during the refurbishment of Unit 7 are asbestos-free.