Alstom

Krzysztof Kietlinski

Srivats Srinivasachar

Majed Toqan

Enrico Malfa

Vassilios Burdis

Frank Steege

Reinhard Schurian

A method of producing a calcined raw meal and of producing additional steam in an existing steam generator comprises the following steps: pulverized raw meal, hydrocarbon, primary air and secondary air are fed to a calciner system ( ), wherein the raw meal is calcined in a temperature range between 850&deg; C. and 950&deg; C., the calcined raw meal is separated from the calciner flue gases at the exit of the calciner system, the calcined raw meal is directed through a cooler ( ), in which it exchanges its heat with the secondary air, the calciner exhaust gases are directed in the gas path of the backpass of the steam generator ( ) at an appropriate temperature window and are used for steam production. The raw meal consists mainly of limestone (CaCO ) and the calcined material is mainly lime (CaO). The fuel feed ( ) to the steam generator ( ) is reduced during introduction of the exhaust gases into its backpass.

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Elbag, Poland

Krzysztof Kietlinski