Firma Carl Still Gmbh & Co Kg

Babcock Bsh Aktiengesellschaft

Hans Becker

Janos Bocsanczy

Dieter Stahlherm

Gerhard Rutkowski

A rotary kiln has a generally cylindrical housing centered on and extending along an axis inclined to the horizontal and having an upper upstream end and a lower downstream end and a drive that rotates the kiln about its axis. Particles to be heat-treated are fed into the housing at the upstream end and are extracted from the downstream end. A plurality of axially separate heat-exchange radiators fixed in the housing are connected axially in series and a fluent heat-exchange medium is flowed serially through the radiators from the downstream end of the housing to the upstream end of the housing.

Rotary kiln

A method of preheating coal for coking comprises bringing a hot operating gas into direct contact with the coal to preheat the coal. Both the coal and the operating gas are passed into a separator and the separator is operated so as to effect the separation of the coarse preheated coal for delivery to the coke oven from the operating gases and coal dust. The operating gases and coal dust are then passed into a deduster to remove the coal dust from the operating gases. A portion of the removed dust is continuously directed into an accumulator. The dust is either supplied from the deduster or the accumulator to a combustion furnace where it is burned to generate at least a portion of the operating gas. The amount of coal dust which is accumulated in the accumulator is checked regularly and the separator is operated so as to produce sufficient dust to maintain a desired operating level in the accumulator so that dust will always be available in a sufficient quantity to operate the combustion chamber for supplying the operating gases.

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Tonisvorst, Germany

Hans Becker