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SMS Siemag to Upgrade Gas Cleaning System for ArcelorMittal Kryviy Rih BOFs
05/25/2011 - ArcelorMittal has placed an order with SMS Siemag for a comprehensive revamp of the gas cleaning equipment at its steelworks in Kryviy Rih, Ukraine. The new system will use SMS Siemag’s hydro-hybrid filter technology.
ArcelorMittal has placed an order with SMS Siemag, Germany, for a comprehensive revamp of the gas cleaning equipment at its steelworks in Kryviy Rih, Ukraine.
The works operates a total of six 160-tonne BOF converters, with dust-laden converter gas currently cleaned in conventional wet-type scrubbers. Within the framework of the current modernization project, the filter systems will be converted to hydro-hybrid filter technology developed by SMS Siemag together with SMS ELEX. The new filter system builds on the positive experience gained from more than 30 reference plants fitted with wet-type electrostatic precipitators for converter gas.
SMS Siemag’s hydro-hybrid filter technology is appropriate for retrofits of existing plants in order to bring them up to increasingly stringent environmental standards. By retrofitting a wet-type electrostatic precipitator (ESP) suitable for this application and integrating it with the existing wet-type scrubber, residual dust contents can be brought to compliance with the most exacting legal requirements. Investment costs are distinctly lower than those for a newly erected primary gas cleaning plant using dry-type electrostatic precipitators. Usually, even the operating costs of the gas cleaning system can be reduced. A further advantage is the compact design of the filter, facilitating installation in existing plant environments with confined space conditions.
In addition to modernizing the Kryviy Rih works off-gas cleaning system, SMS Siemag will also renew the off-gas cooling system, complete with the water cooling circuits. One new wet-type scrubber will be supplied for each converter. The existing water treatment plant will be used without any modifications for both the wet-type scrubbers and the wet-type electrostatic precipitators.
The SMS Siemag scope comprises basic and detail engineering as well as the supply of all core components, while the six wet-type electrostatic precipitators will be supplied by SMS ELEX. The conversion concept provides for the possibility of retrofitting a converter-gas recovery plant at a later stage to further enhance the economic efficiency of the facility.
The project will be realized in several steps, covering one converter at a time. The first hydro-hybrid filter system is scheduled to be operational in 2012.
ArcelorMittal Kryviy Rih places great importance on sustainable and ecofriendly production processes. In recognition of its commitment exercised in the past, the company was awarded the title “Environment Protection Leader 2009” within the framework of the program “Ecology, environment and nature management in Ukraine”.
SMS Siemag AG and SMS ELEX AG are companies of the SMS group, which are, under SMS Holding GmbH, a group of companies internationally active in plant construction and mechanical engineering for the steel and nonferrous metals industry. It comprises the two Business Areas SMS Siemag and SMS Meer. In 2010, some 9,200 employees worldwide generated a turnover of EUR 3 billion.
