CLINTON, N.J., Feb. 20, 2001 (BUSINESS WIRE)à‚–Foster Wheeler Corporation’s (FWC:NYSE) subsidiary, Foster Wheeler Energy International, Inc, has signed an agreement with Lurgi Lentjes Bischoff GmbH, a Lurgi Lentjes AG company of Dusseldorf, Germany, giving it worldwide rights to market, sell and supply that company’s ammonia-based flue gas desulfurization (FGD) equipment.
FGD technology is used to remove sulfur-based emissions from power plants and other industrial applications that rely upon the combustion of fossil fuels such as coal and oil, as their primary source of energy. The equipment significantly curtails such emissions and reduces the potential for harmful acid rain.
“The Kyoto Accord laid down the requirements for more stringent emission regulations throughout the industrialized and developing world,” said Henry E. Bartoli, chairman, president and CEO of Foster Wheeler Energy International. “The combination of Foster Wheeler’s solid fuel steam generator technology and the Lurgi Lentjes FGD technology will not only allow the industry to combust high-sulfur, low-cost, solid fossil fuels in an environmentally sound manner, but will also produce a by-product beneficial to the agricultural industry.”
The Lurgi Lentjes FGD technology is suitable for use on all steam generators, including both new and retrofit applications. In particular, this technology is especially well suited for plants with circulating fluidized bed (CFB) boilers, where Foster Wheeler is the market leader. The CFB boilers are perfectly suited for the combustion of high- sulfur, solid-waste fuels. When combined with FGD technology, the amount of limestone consumed and the quantity of calcium-rich ash generated by these boilers can be greatly reduced.
With conventional FGD technology (wet/dry FGD scrubbers), limestone is the principal feedstock used for capturing the sulfur. Once removed from the flue gas, a calcium/sulfur-based waste product is generated which requires disposal. Typically, such waste is landfilled. The Lurgi Lentjes process differs in that the feedstock is aqueous ammonia and the sulfur is converted into ammonium sulfate, a nitrogen-based, commercial-grade fertilizer used by the agricultural industry on a variety of crops including corn, rice, and potatoes.
With the increased use of FGD equipment in industrialized countries, the amount of sulfur pollutants in the air has diminished. However, this has also reduced the sulfur content of the soil in many farming regions, which has consequently resulted in limited crop yields. The problem is becoming particularly acute in many European farming communities, as well as in the U.S. and other countries throughout the world. The Lurgi Lentjes process circumvents this condition by removing the sulfur at the source of emission and by returning it to the soil via the sulfur-based fertilizer without the deleterious effects of air pollution and acid rain.