Steag Aktiengesellschaft

Ruhrkohle Ag

Foster Wheeler Energy Corporation

Klaus Goldschmidt

Karl K Knoblauch

Horst Grochowski

Jurgen Schwarte

Kyaw Than

Hans-Joachim Schmidt

Friedrich-Karl Bassier

Friedrich Bassier

Dieter Heese

Dieter Zurawsky

Hans Lehmann

Gerhard Hausberg

Sulphur is manufactured out of sulphur dioxide containing gases by dividing the feed gas in two flows of gas having a volume ratio of 2 to 1 and reducing the greater flow of gas on a carbon containing substance like anthracite, thereby obtaining hydrogen sulfide which is mixed with the smaller flow of gas, the mixture being converted in a Claus process to sulphur.

Method of manufacturing sulphur from SO.sub.2 containing gases

An improved process for utilizing the residues of a thermal energy power plant washer in which limestone or lime residue is converted to gypsum and the substrate is recrystallized to alpha sulfate hemihydrate and is treated with water. The improvement comprises mixing the alpha sulfate hemihydrate with at least one additive. The additive is selected from the group consisting of flue ash from a coal combustion installation, waste washings or local tailings from coal recuperation, granulate of ash from coal combustion, slag from steel production, clacium sulfate from exhaust gas washers, and calcium sulfate dehydrate from exhaust gas washers.

Process for the disposal and economic use of the residue of the exhaust

A process for disposing of the residue of exhaust gas washers by utilizing them as a structural material in mines. The sulfur in the exhaust gases is reacted with calcium compounds to form CaSO.sub.4.2H.sub.2 O. The CaSO.sub.4.2H.sub.2 O is recrystallized to alpha-CaSO.sub.4.1/2H.sub.2 O, conveyed underground, mixed with water, implaced and allowed to harden to form barricades or other structures in the mine.

Process for the disposal of the residue of the exhaust gas washers of

Concrete, especially for producing concrete blocks of high compressive strength, is formed from a hydraulic binder and an improved aggregate which consists of 0.1:1 to 1:0.1 parts of a sludge to comminuted slag. The sludge is a calcium-containing product of the scrubbing of the flue gases of a fossil-fuel boiler, preferably of a power plant, while the slag can be melting-chamber slag or ash obtained from the furnace. The composition may also contain sand or gravel. It is combined with water, to be cast into cement blocks of high compressive strength. Low proportions of the hydraulic binder are required with the improved aggregate.

Aggregate for concrete and concrete composition containing same

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Essen, Germany

Klaus Goldschmidt