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| Siemens starts up world's first Meros industrial plant at Sinter Plant, Austria
The new Meros (Maximized Emission Reduction Of Sintering) off-gas-cleaning plant was successfully started up at the sinter plant of the Austrian steel producer voestalpine Stahl GmbH, Linz, a company of the listed voestalpine Group. The foreseen emission reduction levels were quickly and fully met, and an overall plant availability of over 99% was achieved. The new dry-type Meros gas-cleaning process removes pollutants such as dust particles, heavy metals, SO2 and organic compounds from the offgas stream of sinter plants far more effectively than in conventional processes. The plant start-up proceeded smoothly and the foreseen gas-treatment capacity was rapidly reached. With this technology, the ever stricter environmental regulations expected to be imposed on sinter plant emissions in the future can already be met today. | |||
| 23 Nov 2007
, Linz/Austria
: The new Meros (Maximized Emission Reduction Of Sintering) off-gas-cleaning plant was successfully started up at the sinter plant of the Austrian steel producer voestalpine Stahl GmbH, Linz, a company of the listed voestalpine Group. The foreseen emission reduction levels were quickly and fully met, and an overall plant availability of over 99% was achieved. The new dry-type Meros gas-cleaning process removes pollutants such as dust particles, heavy metals, SO2 and organic compounds from the offgas stream of sinter plants far more effectively than in conventional processes. The plant start-up proceeded smoothly and the foreseen gas-treatment capacity was rapidly reached. With this technology, the ever stricter environmental regulations expected to be imposed on sinter plant emissions in the future can already be met today. In order to satisfy the municipal environmental regulations required for the expansion of its sinter-production capacity to 2.8 millions tons per year, voestalpine Stahl GmbH commissioned Siemens Metals Technologies to replace the existing wet-type dedusting system with the dry-type Meros Process. Up to 1,000,000 m³ of sinter off-gas can now be treated per hour. In comparison with the previous wet-type system, with the Meros Process emissions of dust, heavy metals, organic compounds and SO2 are reduced by more than 90%. According to Hannes Sigmund, environmental spokesman for voestalpine Stahl, “With the installation of the new Meros plant, the major source of pollutants at the voestalpine steel works in Linz was decisively diminished.” Dr. Alexander Fleischanderl, Head of Technology for Steelmaking and Environmental Technologies at Siemens VAI Metals Technologies in Linz and pioneer of the Meros Process added: “A major reason for the success of this project was the outstanding cooperation with voestalpine. As indicated by the low emission values achieved thus far, the Meros Process not only satisfies the already strict environmental regulations of today, but can be expected to also meet the ever stringent environmental emission values anticipated in the future for sinter plants.” In the Meros process, special adsorbents (such as specially prepared lignite cokes or activated carbons) and desulphurization agents (such as hydrated lime or sodium bicarbonate) are injected into the sinter offgas stream at high velocities and are homogenously distributed. This binds the heavy metals and organic compounds as well as the sulfur dioxide and other acidic gases. This is followed by the injection of water and compressed air into the sinter offgas stream through dual-flow injection nozzles installed in a specially designed conditioning rector. In this way, the gas is uniformly cooled and the chemical reaction of the additives for removing sulfur dioxide and other acidic gas components present in the offgas stream is accelerated. All dust particles then flow with the offgas stream to the fabric filter where they are efficiently separated. In order to enhance the gas-cleaning efficiency and to significantly reduce additive costs, most of the separated dust in the bag filter is recycled to the offgas stream. Unreacted adsorbents and desulphurization agents once again come into contact with the offgas, thus significantly increasing the adsorbent efficiency and reducing the costs for consumables. The new Meros plant was installed by Siemens Metals Technologies on a process-turn-key basis within 17 months following the receipt of the contract. The entire project was carried out with minimal interference to normal sintering and gas-cleaning operations. A total shut-down period of less than five days was necessary to carry out all of the required modifications and integration work with the existing gas-cleaning system. Further information on solutions for steel works, rolling mills and processing lines is available at www.siemens.com/metals. A photo supplements this press release. Please see: www.industry.siemens.com/data/presse/pics/10076698.jpg Metals Technologies (MT), a division of the Siemens Industrial Solutions and Services (I&S) Group, is one of the world's leading engineering and plant-building companies for the iron and steel industry as well as for the flat-rolling sector of the aluminum industry and for open-cast mining. MT, which was created from the integration of Voest-Alpine Industrieanlagenbau, Linz/Austria, plus the electrical engineering product business and automation solutions of Siemens, provides a comprehensive range of supplies and services for all related technological processes and integrated automation solutions for the entire life-cycle of metallurgical plants. The Siemens Industrial Solutions and Services Group (I&S) is the integrator of systems and solutions for industrial and infrastructure facilities and global service provider for the plant and projects business covering planning, installation, operation and the entire life cycle. I&S uses its own products and systems and process technologies in order to enhance productivity and improve competitiveness of companies in the sectors of metallurgy, water treatment, pulp and paper, oil and gas, marine engineering, open-cast mining, airport logistics, postal automation, intelligent traffic systems and industrial services. In fiscal 2007 (to September 30) I&S employed a total of 37,000 people worldwide and achieved total sales of EUR 8.894 billion, according to U.S. GAAP. Further information and downloads at: www.industry.siemens.com |
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