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Journal of the Southern African Institute of Mining and Metallurgy
versão On-line ISSN 2411-9717
versão impressa ISSN 2225-6253
J. S. Afr. Inst. Min. Metall. vol.109 no.8 Johannesburg Ago. 2009
JOURNAL PAPER
Cansolv® SO2 Scrubbing System: Review of commercial applications for smelter SO2 emissions control
V. LéveilléI; T. ClaessensII
ICansolv Technologies, Inc
IIChemical Initiatives
SYNOPSIS
As new legislation drives metallurgical plants to lower SO2emissions, plant managers face the challenge of keeping their costs under control. The Cansolv® SO2 Scrubbing System has been broadly adopted in the non-ferrous industry as a cost-effective solution for smelter operators to meet the new SO2emissions targets.
The Cansolv® SO2 Scrubbing System is an amine-based regenerable process that selectively absorbs SO2 from a variety of gases, including dilute smelter gases, such as furnace and converter gases. The system produces a pure, water-saturated SO2by-product stream, which can then be directed to the front end of a sulphuric acid plant for conversion to sulphuric acid. When deployed in a smelter complex, the Cansolv® SO2Scrubbing System may also be used to process acid plant tail gas, allowing single absorption sulphuric acid plants to achieve emissions an order of magnitude lower than that of a double absorption acid plant with a lower capital investment. Depending on inlet gas temperature, SO2emissions in the treated gas can be controlled to as low as 55 mg/Nm3.
This paper will describe some of the applications where customers have or are planning to use the Cansolv® SO2Scrubbing System, as well as which features and cost advantages for the treatment of smelter gases were important in the technology choice.
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