7TH EUROPEAN COKE AND IRONMAKING CONGRESS - ECIC 2016

LanzaTech and Primetals are enabling a resource revolution in the steel industry that supports a circular economy, by decoupling the use of natural resources and the generation of waste from economic growth. Microbial fermentation of carbon and hydrogen-rich off-gases, such as, blast furnace top gas, direct reduction gas and also converter BOF gas to produce ethanol or other basic chemicals, substantially mitigates CO2 emissions while simultaneously reducing NOx, SOx and particulate emissions. The fuels and chemical products produced in this manner deliver superior economic returns. The ethanol product has up to a 87% reduction in greenhouse gases (GHG) compared to conventional gasoline, and reductions between 30% and 50%, per MJ energy recovered, when compared to combustion of those gases for power generation. Carbon recycling has the potential to open up vast new resources for making lowcarbon chemicals and fuels that displace petroleum without the environmental concerns associated with crop- and land-based bio-products. Through a process of gas fermentation, waste carbon can be kept in the material cycle, demonstrating innovative industrial growth solutions without compromising the environment. Through a process of industrial symbiosis LanzaTech and Primetals offer industries the opportunity to monetize wastes and residues while improving air quality around the industrial zone and adding value by creating useful products. For example steel mills recycling carbon emissions to produce ethanol and aviation fuel.