Bergwerksverband Gmbh

Didier Engineering Gmbh

Werner Kucharzyk

Wolfgang Rohde

Werner Siebert

Diethard Habermehl

Manfred Galow

Kurt-Gunther Beck

Klaus Dahl

Heinz Bellenberg

A method and an apparatus are disclosed for drying and preheating coking coal particles of mixed sizes in a flight stream tube. A stream of hot gas in which different-size particle fractions are entrained, is advanced through the tube. At one or more locations it is split up into two flows, one containing the smaller fractions and the other containing the coarser fractions. The coarser fractions are slowed and readmitted into the flow having the smaller fractions, counter to the direction of advancement of this flow.

Method of and apparatus for drying and preheating coking coal in a

In a pneumatic conveying heater or drier for dispersed solid particles, a pulsating device in the form for example of a rotary throttling disk is arranged in the circulation conduit for the conveying stream of hot gas so as to periodically accelerate and decelerate the conveyed solid particles, thus increasing the efficiency of the heat transfer.

Method of and device for heating finely divided solid particles in

A device for opening, closing and cleaning fill holes of a coke oven comprises a self-supporting carrying frame extending above the fill holes and supporting a runway for an overhead crane and further supports spring-biased bell seals for respective fill holes; a manipulation unit is suspended on the crane and includes a vertical thrust drive and a rotary drive coupled respectively to a manipulation head which is driven into engagement with actuation means for respective bell seals to selectively open and close the bell and to rotate simultaneously cleaning knives in each fill hole.

Device for opening, closing and cleaning fill holes of coke oven

The gas-tight closure comprises a thin walled tubular piece projecting from a feeding duct into a filling space, a thin walled conical jacket having its larger bottom base provided with a rigid seal reinforcing member cooperating with the lower rim of the intake tubular piece. The outer periphery of the reinforcing member is slanted about a small angle to snugly fit into the tubular piece and adjust the form thereof when upward pull is exerted upon the conical jacket by means of an actuation rod passing outwardly through the wall of the feeding duct. The actuation rod has preferably the form of a hollow shaft which accommodates the manipulation rod of a scraper projecting radially below the reinforcing member into the filling space. The outside portion of the actuation rod is provided with a control device in the form of clamping plates cooperating with abutment plates resting on the guiding sleeve for the actuation rod. The clamping plates are manipulated by means of separate levers.

Gas-tight closure

To increase the temperature at which a tar separator operates which separates tar from condensate obtained by cooling coking gas produced by coking preheated coal, the condensate is preheated by heat exchange with the coking gas entering a raw gas cooler and is then admitted into the coking gas collecting main of the coking ovens, from which it passes to the tar separator. A method and an apparatus are disclosed.

Method and apparatus for tar recovery from raw coking gas

An arrangement for regulating the introduction of substances into chambers is disclosed and is particularly well-suited for the feeding of coal into coke ovens. The arrangement includes a chamber which is to be filled to a predetermined level and a feeding device is provided for feeding material into the chamber. The feeding device has a switch which stops the introduction of the material to the chamber when the level of the material reaches the predetermined level. The switch for the feeding device is electrically connected with a differential pressure switch which is actuated upon the generating of a predetermined pressure differential across it. The requisite pressure differential is generated by introducing pressurized gas into the chamber and an air compressor may be provided for this purpose. A sensing conduit, which is connected with one terminal of the differential pressure switch, extends into the chamber and has an end positioned at the predetermined level to which the chamber is to be filled. The pressurized gas admitted into the chamber sets up certain pressure characteristics in the sensing conduit which are changed when the level of material in the chamber reaches the predetermined level so that the gas no longer has free access to the open end of the sensing conduit. The change in the pressure characteristics causes a pressure differential to be established across the differential pressure switch which, in turn, activates the feeding device switch to stop the introduction of material into the chamber. In order to compensate for shock waves which may be generated in the chamber by the feeding of the material and which may cause a false signal to be transmitted to the switch of the feeding device, a compensating conduit is provided which has an end in the chamber and is connected with the terminal of the differential pressure switch opposite that to which the sensing conduit is connected. A supply conduit for the pressurized gas is also provided and introduces the pressurized gas into the chamber in the vicinity of the end of the sensing conduit.

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Essen, Germany

Werner Kucharzyk