Journal of the Southern African Institute of Mining and Metallurgy
On-line version ISSN 2411-9717
VERRI, M. and BALDELLI, A.. Integrated production of liquid sulphur dioxide and sulphuric acid via a low-temperature cryogenic process. J. S. Afr. Inst. Min. Metall. [online]. 2013, vol.113, n.8, pp. 602-609. ISSN 2411-9717.
The paper describes the design options available for the simultaneous production of liquid sulphur dioxide, via cryogenic condensation, and sulphuric acid in a sulphur-burning sulphuric acid plant. The impact of the operating conditions of the cryogenic condensation on plant capital and operating costs are discussed, with the main focus on the optimization of the most important economic and operative drivers of the non-ferrous mining industry, such as energy efficiency, reliability, and availability. A case history relevant to an integrated sulphur-burning plant producing liquid sulphur dioxide and sulphuric acid, recently started up in the Democratic Republic of Congo, is described.
Keywords : sulphur burning; sulphuric acid; iquid SO2; cryogenic SO2 condensation; liquid sulphur dioxide; sulphur dioxide.