Krupp Koppers Gmbh

Robert Bosch

Fried. Krupp Gesellschaft MIT Beschrankter Haftung

Bergwerksverband Gmbh

Gunter Meyer

Heinz Durselen

Werner Hippe

Martin Reinke

Johannes Janicka

Wolfgang Rohde

Manfred Blase

Gerd Nashan

Dietrich Radke

Wilhelm Janssen

Werner Abendroth

Klaus Wessiepe

Karlheinz Bretthauer

Wilhelm Jakobi

Helmut Dohle

Ingbert Pennekamp

Manfred Friedrichs

Hans Oldengott

Arnulf Schuffler

Heribert Bertling

Gerd Klinkenberg

Gunter Reimann

Karl-Heinrich Vopel

Gunther Voegele

Werner Hoke

In order to reduce the concentration of CO in the waste gas of coke oven batteries that are heated by lean gas, additional sealing is used for the brick-work of die regenerator separating walls of the coke oven battery, as well as a coke oven battery with a regenerator having brick-built separating walls, between ducts that carry lean gas and waste gas, in which one has arranged stainless steel sheets in front of the regenerator separating wall with, preferably, an intermediate layer that is located behind it that comprises ceramic fibers. In this regard, the stainless steel sheets, that overlap with one another in each case, are preferably held by rod-shaped tensioning device.

Device for reducing the concentration of CO in the waste gas from coke

Renovation of a heating wall, in particular a heating wall of a coke oven battery, includes starting with a vertical wall raising of a part to be renovated on a wall protective plate of the part, abutting a new masonry exactly on the wall protection plate, and arranging between the new masonry and the old masonry a vertically extending welding joint from a ceramic material.

Method of restoring heating walls of coke oven battery

A layer system for electrochemical probes has a ceramic substrate, electrodes applied on the ceramic substrate, a sensor layer arranged over the electrodes, and a structure for improving adherence of the sensor layer to the substrate and including at least one adherence improving layer portion which is located under and extends upwardly into the sensor layer and also is sintered with the substrate.

Layer system for electrochemical probes

Renovation of a heating wall, in particular a heating wall head of a coke oven battery, includes starting with reconstruction of the wall to be renovated on a wall protective plate of the part, abutting a new masonry exactly on the wall protective plate, and arranging between the new masonry and the old masonry a vertically extending welding joint for sealing the ceramic welding after heating up the new masonry, which means after reaching final thermal expansion of the new masonry.

Reactor chamber door for large-scale coking reactors

The method of reducing a nitrogen oxides content of a flue gas generated on firing of a rich gas or combination coke oven having a plurality of heating walls forming dual heating flues, in which a single stage or multistage combustion takes place, and also having a plurality of regenerators for recovery of flue gas heat and preheating of an underfiring medium, includes the steps of mixing one portion of the flue gas drawn from one flue of the dual heating flues with the underfiring medium, gas and/or air, prior to or on admission to the other flue of the dual heating flues, or a regenerator connected with it, and circulating another portion of the flue gas additionally inside the dual heating flues. The method advantageously also may include recirculating externally at a predetermined flow rate the one portion of the flue gas considering the recirculating of the other portion of the flue gas inside the dual heating flues and controlling the recirculating so that a flame temperature in the heating flues is kept constant based on a heat balance in the heating flues, and feeding, during rich gas firing of the combination coke oven, the one portion of the flue gas recirculated externally only to those of the regenerators, which receive the underfiring media during lean gas operation, and, during rich gas operation, only to every second one of the regenerators.

Method of reducing the nitrogen dioxide content of flue gas from a coke

NO.sub.x -content in a flue gas during heating of coking oven with heating trains cooperating in pairs, high and low lying combustion stages, and flue gas return at a height of a heating train sole in a circulating stream, is reduced by adjusting a circulating stream rate defined by a volume stream of a returned flue gas divided by a flue gas volume stream without returned flue gas to between 20% and 50%, maintaining a stage ratio for a stage number greater than or equal to 2 defined as an air volume stream of a lower stage divided by a total air volume stream, at between 80/I% and 140/I% wherein I is a number of stages, arranging an upper combustion stage at a height of (45.+-.10%).times.(I-1) of the heating train height.

Method of reducing nox-content in flue gas during heating of coking oven

In regenerative coking ovens having vertical heating flues cooperating in pairs, high level and low level combustion stages and means arranged at the bottoms of respective heating flues to recirculate the flue gas, the following measures insure a substantially reduced generation of NO.sub.x contents in the flue gas: the recirculation current rate is between 20% and 50%, the combustion stage ratio is between 40% and 70% and the second combustion stage is arranged between 35% and 55% of the height of the heating flue.

Method of reducing NO.sub.x component of flue gas in heating coking

A conveyor apparatus for handling small capsules, ampules, etc. and for transferring them from a continuous stream to a cyclically moving conveyor rack. Segmented pivoting arms hold the capsules in peripheral recesses. The arms are guided in a cam track whereby their pivotal motion takes place at varying speeds which can be adapted to the requirements of the transfer process and of the subsequent machine members.

Apparatus for transport of capsules and the like

In order to assure a high arc current and a high arc power with simultaneous reduction of flicker voltages, at least two juxtaposed electrodes, each having the same distance from the vertical axis of the furnace and the same electrical potential, are connected to each phase of an electric arc furnace, which is preferably a three-phase electric arc furnace. Preferably circular electrodes are employed which are conductively connected together at least in the vicinity of the electric arc.

Electrode arrangement for electric arc furnaces

A dispensing apparatus for fluid media is disclosed which comprises a dosing piston movably guided within a dosing cylinder and a subsequent rotary valve, wherein the cleaning and/or sterilization of the parts coming into contact with the filling product can be performed without removing these parts. By means of a particular disposition and embodiment of the dosing piston, the rotary valve and the dosing cylinder, it is possible to make the dosing piston and rotary valve accessible rapidly and simply.

Filling apparatus for fluid media

A method is provided for processing dusts and muds from dust removing systems in the iron and steel industry by pelletizing them for further processing. Green pellets are formed by pelletizing the dusts and/or muds with a moisture content of between 10% and 16% for less than 6 minutes with an addition of water such that the moisture content of the green pellets is between 17% and 30%. The green pellets, together with a reducing agent, are then introduced into a rotary furnace.

Method for processing dust-like matter from metallurgical waste gases

In order to melt iron-containing material, particularly sponge iron, in an electric furnace containing a molten metal mass underlying a molten slag mass, electrodes are immersed in the molten slag mass, a current is caused to flow between the electrodes and is converted into melting heat by the electrical resistance of the slag, and the number of charge carriers in the slag is adjusted to control the conductivity of the slag and thus the ratio of the current flowing through the slag to the current flowing through the molten metal.

Growing community of inventors

Essen, Germany

Gunter Meyer