Uhde Gmbh

Krupp Uhde Gmbh

Michael Buxel

Heinz Jochen Keller

Manfred Koch

Friedrich-Wilhelm Pietzarka

Horst Thieme

Besides a synthesis gas, a metallurgical raw material is to be produced from an oil containing heavy metals. To do this, the oil is partially oxidized and the heavy metal-containing soot is separated and burnt and the heavy metals thus occurring as ash can be taken to further processing, e.g. washing from the synthesis gas produced, using an aqueous washing solution.

Process for producing a metallurgical raw material from oil containing heavy metals

A process and an apparatus for the purification of gases, particularly for the desulphurization of and NO.sub.x -elimination from flue gas by multistage adsorption and catalytic reaction in gravity-flow moving beds of granular, carbon-bearing materials contacted by a transverse steam of the gas, in which a minimum of two moving beds are arranged in series with reference to the gas route so that NO.sub.x -elimination takes place in the second or any downstream moving bed. Where large volumes of flue gas from industrial furnaces must be purified, purification is adversely affected by the formation of gas streaks with widely varying sulphur dioxide concentrations. This disadvantage is eliminated in that the prepurified flue gas leaving the first moving bed and having a locally variable sulphur dioxide concentration gradient is subjected to repeated mixing before ammonia is added as reactant for NO.sub.x -elimination.

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Waltrop, Germany

Michael Buxel