Alstom to build Brazil power plant powered by waste gas

France's Alstom (Paris: ALO) has received a €330 million contract from Brazilian steel producer ThyssenKrupp CSA Companhia Siderúrgica to build a 490 MW turnkey combined cycle power plant.

The plant is to be located in Sepetiba, Brazil, and will be fueled by blast furnace waste gas from a new steel mill being built in parallel by the customer. Excess energy is to be exported to the national grid.

The project will be carried out in two phases, with the plant operating in simple cycle first, allowing power to be produced early on in the project. In the second phase, further equipment will be added to give full combined cycle operation.

Alstom is to provide all engineering, procurement and construction services to deliver a fully integrated blast-furnace-gas-fired combined cycle plant.

The power plant will integrate in-house core plant components consisting of two GT11N2 gas turbines, heat recovery steam generators, one steam turbine and three turbo generators.

Alstom’s GT11N2 gas turbines have the unique capability of burning waste gases with such low calorific value, as those to be produced at the Sepetiba steel plant, the company said.

When integrated in an Alstom combined cycle, the turbines produce 10 percent more power compared with the more conventional steam plant solutions typical for blast furnace gas applications, according to Alstom.

“Using gas that would otherwise be wasted to produce power is both of economic and environmental benefit. Alstom has a range of power solutions which can help industry reduce emissions and maximise commercial value,” said Philippe Joubert, President of Alstom Power Systems.

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