MMK commissions new gas purifying plants
Over the course of the project, two old wet gas purification systems, № 32 and № 33, were replaced with modern dry gas purifiers. The new equipment is designed for catching, cooling and cleaning gas fumes that have formed as a result of work in the two-bath steelmaking unit (DSPA-32), as well as unregulated emissions which do not currently enter the gas exhaust pipe.
DSPA-32's gas purification system consists of three two-modular tubular filters from a new original design with 20 filter sections on each filter and a horizontal arrangement of dust-collecting sleeves; five DR-28 smoke exhausters (four operational and one reserve) with a capacity of clearing 530,000 m³/hour and engine power of 1MW each; compressor stations for the purpose of regenerating; dust collection systems with dust-free systems for loading dust into vehicles; a compressor station for supplying compressed air to regenerate the tubular filters, and electrical substations and a system of combined input and extract ventilation. The total volume of the area cleaned by the gas purifiers will be 1.32 mln m³/hour.
The complex for cleaning emissions from intra-furnace metal processing plants will include: a tubular filter module with 16 filter sections of similar design; two DR-22.4 smoke exhausters with a clearing capacity of 330,000 m³/hour and an engine capacity of 1MW each, and a compressor system with dust-free systems for loading dust into vehicles. The diameter of the gas-pipe supply will be 25 metres. The volume of gas purified will be 214,000 m³/hour.
All these systems are provided with ways of controlling the units' operation and the automation of the technological process. The gas purifying plants are currently 99% efficient and the residual dust content is only up to 20 mg/nm³. The systems will reduce dust emissions by 1,800 tonnes a year.
The contract equipment for the reconstruction of the gas purification works was supplied by LLC 'PO ECOTECH'. The general contractor was OJSC ‘Prokatmontage’ and the general designer, OJSC ‘Magnitogorsk Gipromez’.
MMK is one of the world's largest steel producers and a leading Russian metals company. The company's operations in Russia include a large steel-producing complex encompassing the entire production chain, from the preparation of iron ore to downstream processing of rolled steel. MMK turns out a broad range of steel products with a predominant share of high-value-added products. In 2016, the company produced 12.5 million tonnes of crude steel and 11.6 million tonnes of commercial steel products. MMK Group had sales in 2016 of USD 5,630 million and EBITDA of USD 1,956 million.
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