Anglo American Platinum selects Topsoe’s WSA tech for sulphur emissions control

According to Mining News Pro - Anglo American Platinum has signed a contract for Topsoe’s world-leading Wet gas Sulphuric Acid (WSA) sulphur emissions control technology for their platinum smelter facility in Polokwane, South Africa. The statement said: “The WSA technology ensures compliance with environmental regulations and offers a perfect match to the often challenging requirements of metallurgical smelters and roasters. WSA is a proven and very cost-efficient technology to control sulphur emissions and produces commercial-grade sulphuric acid that can be sold.”

The WSA plant is designed to drastically reduce emissions of SO₂ from the platinum smelter from around 90,000 mg/Nm³ to less than 1,200 mg/Nm³. It will produce up to 148 t per day of sulfuric acid. “Sulphur emissions control has become a business prerequisite in the South African smelter industry. We wanted a solution that would ensure environmental compliance now and in the foreseeable future as well as make a convincing business case. WSA ticked both fields,” says Dr Lloyd Nelson, Head of Smelting & Refining Technology, Metallurgy, Anglo American Platinum.

Newly enforced regulations in South Africa limits the emission of sulphur (SO₂) and requires sulphur-emitting facilities to install an abatement technology. WSA is a leading sulfur emissions control technology for wet gas applications. Its recovery of process heat makes it extremely energy-efficient and consequently it uses no or very little support fuel. WSA does not produce any waste and requires only minimal cooling water.

The WSA plant ordered by AAP will be the second in Africa. As governments and investors across the continent implement stricter environmental guidelines, the technology is expected to be adopted by many more African companies. Around the world, 160 WSA plants have been commissioned. The contract covers basic engineering, license, proprietary equipment, catalyst, training, and supervision services. Hatch in South Africa have been selected by AAP for Engineering, Procurement, and Construction Management (EPCM) and will be managing the completion of the project on behalf of AAP. Haldor Topsoe is a world leader in high-performance catalysts and proprietary technologies for the chemical and refining industries