Estimation of SO₂ emission factors from copper smelting industry in Yunnan Province, China

Abstract

Copper smelting is a significant source of SO₂ emission. It is important to quantify SO₂ emissions from combustion sources for regulatory and control purposes in relation to air quality. The characteristics of SO₂ emissions from copper smelting industry in Yunnan Province, China, were examined. Analysis based on the present situation, material balance and measuring method were used to confirm SO₂ emission factors of copper smelting industry. Results show that SO₂ emission factors for Isa system, side blown-continuous converting system (SB-CC), blast furnace-continuous converting systems (B-CC) and blast furnace-converter blowing (B-C) are 11.69–18.64, 62.44–101.4, 19.43–37.88 and 45.48–81.03 kg/t(blister copper), respectively. The comprehensive emission factor based on all smelting plants is found to be in the range of 23–39.99 kg-SO₂/t(blister copper) for Yunnan Province, China. The results are compared with those for discharge coefficients of industrial pollutants in the First National General Survey of Pollution Sources and the emission factor of the total amount of major pollutants. It is observed that there are some differences among emission factors.

Keywords

copper smelting industry / SO₂ emission factors / material balance / measuring method

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