Patent ID: 7666374

Claim:
A process for cleaning exhaust gases produced by a sintering process of metal-containing waste, wherein the sintering exhaust gas comprises at least one of the following harmful substances in addition to at least one of CO 2 , CO, O 2 , and H 2 O: NO x , SO 2 , HCl, Hg, dioxins, furans, dust sublimatable or condensable residues from a low-temperature pyrolysis process, heavy hydrocarbons, heavy metals, and potassium and/or sodium compounds, wherein the harmful substances are essentially eliminated from the sintering exhaust gases in at least two steps by at least one adsorption and/or absorption agent in a single moving bed in a moving bed reactor system, the moving bed including a particle layer (stage I) disposed above a flow input area and below an adsorption layer (stage II) of the moving bed, and at least one of the harmful substances SO 2 , HCl, sublimatable or condensable residues, heavy hydrocarbons, heavy metals and potassium and/or sodium compounds is bound absorptively or adsorptively and the harmful substances are trapped by adhesion in the flow input area or the Particle layer (stage I) of the moving bed, and the substantial removal of NO x and the adsorptive or absorptive removal of dioxins and furans takes place in the adsorption layer (stage II) in the moving bed.