Systems of aspiration and gas cleaning in mixer departments of steelmaking shops
V. A. Kravets
Donbas National Academy of Civil Engineering and Architecture
Annotation: Reduction of emissions from mixer departments of existing steelmaking shops is an important task to match steel industry environmental standard ISO 14 000, without which the products of the Ukrainian metallurgical plants is not allowed on the markets of the EU and other developed countries. The main components are graphite dust and fine red fume (brown smoke), which enter the atmosphere during the process of pouring iron into the mixer and discharge from the mixer in saucepan. In Ukraine, the mixers of many steel mills are not equipped with systems of aspiration, and graphite dust and brown smoke enter the atmosphere in the form of fugitive emissions, i.e. without any cleaning. At some plants there are outdated and physically worn out cleaning systems, but they are in fact often not exploited. To reduce emissions from existing steelmaking shops offices mixer, we recommend the following design and technical solutions. 1. Each mixer is supplied with an autonomous system and emissions purification, including umbrella over the neck and over the toe of the mixer, a switch rod with a sock on the neck of the gas cleaning equipment, exhauster, and chimney. 2. The capture of graphite to Cyclone SKCN-34 large diameter and brown smoke suppressant to use gaseous nitrogen. If resources are not available, nitrogen should be applied a second purification stage-filters. 3. The consumption in the aspiration to take at least the following: for the capacity of the mixer 600 t – 100 000 m3/h; 1 300 t – 150 000 m3/h; 2 500 t – 250 000 m3/h.
Keywords: mixer department, aspiration, gas cleaning, red fume suppression.
Pages: 213-219.
Link for citation: Kravets, V. A. Systems of aspiration and gas cleaning in mixer departments of steelmaking shops. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2013. – Vol. 9, N 4. – Р. 213-219. – URL: https://donnasa.ru/publish_house/journals/spgs/2013-4/04_Kravets.pdf (date of access: 19.09.2024). (in Russian)
Vol. 9, N 4 (2013)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture