EBDS-Process

SO₂ and NO_x emissions from power plants are partly responsible for acidic precipitations, which lead to forest decay, crop damage and building corrosion. The amounts of these emissions for industrialized countries are in the order of 3 Mio tons/year for West-Germany and 23 Mio. tons/year for the U.S.A. In order to decrease the substantial damages from acidic precipitation, many countries are presently imposing stringent emission standards for fossile fuelled power plants. Conventional technologies which are capable of meeting these standards such as wet scrubbers for SO₂ absorption and SCR for NO_x reduction are meanwhile available. Whereas being quite suitable for large power plants, these technologies become less cost effective when scaled down to smaller units. This is especially the case for wet scrubbing systems, which are highly complex and require sophisticated waste water and product treatment.