Converter Gas and Waste Water Treatment by OG-system in Steel Smelting Industry
Lin, Tianyi (2013)
Lin, Tianyi
Centria ammattikorkeakoulu (Keski-Pohjanmaan ammattikorkeakoulu)
2013
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-201302062128
https://urn.fi/URN:NBN:fi:amk-201302062128
Tiivistelmä
OG system, which stands for Oxygen Converter Gas recovery system, is the suppressed combustion type exhaust gas recovery system for the converters of steel smelt shops. This system is designed for cooling and purifying the converter gas which is produced from process of steel smelting.
Metallurgical industry includes two types of technologies, which are ferrous and non-ferrous metallurgy. There are two smelting methods, combined method (BOF-method) and electric arc furnace method. At present, BOF-method is mainly applied in China, and OG system is mainly applied by most Chinese steel making plants to deal with the waste gas and waste water which are produced by the process of steel making by BOF-method. The purpose of purifying waste water treatment is recycling use. There are three technologies in this treatment, the removal of suspended solid, the stability of the water and the dehydration and reusing of sludge.
The purpose of waste water treatment is recycling. The key points of converter gas purifying waste water are: first, the removal of suspended solid; second, the stability of water quality; and third, the dehydration and using of the sludge.
The aims of the thesis were to study the waste water characteristics of iron and steel industry, the properties of the pollutants in the waste water and the process and technology of converter gas and converter gas purifying waste water in steel smelting.
Metallurgical industry includes two types of technologies, which are ferrous and non-ferrous metallurgy. There are two smelting methods, combined method (BOF-method) and electric arc furnace method. At present, BOF-method is mainly applied in China, and OG system is mainly applied by most Chinese steel making plants to deal with the waste gas and waste water which are produced by the process of steel making by BOF-method. The purpose of purifying waste water treatment is recycling use. There are three technologies in this treatment, the removal of suspended solid, the stability of the water and the dehydration and reusing of sludge.
The purpose of waste water treatment is recycling. The key points of converter gas purifying waste water are: first, the removal of suspended solid; second, the stability of water quality; and third, the dehydration and using of the sludge.
The aims of the thesis were to study the waste water characteristics of iron and steel industry, the properties of the pollutants in the waste water and the process and technology of converter gas and converter gas purifying waste water in steel smelting.