Abstract: The invention relates to a method for reducing nitrogen oxides from the exhaust gas of a coke oven, which has a plurality of coking chambers and heating walls, arranged between the coking chambers, with heating flues (12, 12?) for the indirect heating of the coking chambers. A combustible gas (16), which consists entirely or partially of coke oven gas, is burned in the heating flues (12, 12?), thereby producing an exhaust gas which contains nitrogen oxides. A reducing agent is fed to the exhaust gas at a temperature between 700° C. and 1100° C. and the proportion of nitrogen oxide in the exhaust gas is reduced by a homogeneous gas reaction between the reducing agent and the nitrogen oxides. The exhaust gas is subsequently passed through a regenerator (4) for heat recovery.

Abstract: A device for compensating deviations from a coaxial arrangement of components of a regulating organ, said regulating arrangement being comprised of a regulating organ, a crown pipe, and an immersion cup which serve for controlling the gas pressure of a coke oven chamber, with the regulating arrangement being comprised of an immersion cup with a water immersion that seals the gas space of a coke oven chamber versus the gas collecting main and/or plant units downstream, and wherein the height of the water level of the water immersion represents a regulating means to control the gas pressure, and wherein said regulating arrangement is furthermore comprised of an immersion pipe that configures a specially shaped crown pipe at its end submerging into the water of the immersion cup, and that is comprised of a regulating organ to regulate the water level.

Abstract: A device for regulating the chamber pressure of coking chambers of a coke-oven battery using adjustable iris diaphragms or iris nozzles at the ascending pipe elbow openings in the raw gas receiver. The gas stream flowing from the gas chamber of a coking chamber into the raw gas receiver can thus be regulated so that the pressure in the gas chamber of the coking chamber can be controlled. A method is also disclosed for regulating the gas stream which flows out the gas chamber of a coking chamber, wherein the pressure in the coking chamber is regulated by the control, and wherein also the liquid stream is regulated which serves to wash out the coking gases from the raw gas stream of the coking chamber.

Abstract: A device for setting up a control element for controlling the gas pressure of a coke oven chamber without expansion-induced deviations of the control assembly, which deviations in comparable devices from the prior art result from high temperatures and temperature differences in coke oven chambers during operation. The device and the method prevent water used for shutting off, cooling and removing water-soluble impurities from riser pipes from flowing out of the control element in an uncontrolled manner. Also disclosed is a method for controlling the gas pressure of a coke oven chamber using the device, wherein the pressure in the coke oven chamber relative to the collecting main conducting raw gas is controlled by using the control element without expansion-induced deviations of the regulating assembly.

Abstract: A device for flaring combustible gases, having an adjustable opening cross-section, and three tubes arranged about a common longitudinal axis. The tubes are arranged at least in some sections in a common cross-sectional plane an inner tube is designed as a gas introduction tube and has an opening that ends at the top in the vertical direction a diaphragm that can be adjusted in the cross section, through which the gas stream can be closed or regulated and which is fitted with an automatable mechanism for adjusting the opening cross-section. The device typically contains also at least one air guiding plate, feed devices for an inert gas and an ignition mechanism, thereby ensuring a high reliability for flaring the gas and a low emission of nitrogen oxides and soot. A method for operating the device which is suitable for flaring crude gases which are to be combusted is also disclosed.

Abstract: The invention relates to a method for reducing nitrogen oxides from the exhaust gas of a coke oven, which has a plurality of coking chambers and heating walls, arranged between the coking chambers, with heating flues (12, 12?) for the indirect heating of the coking chambers. A combustible gas (16), which consists entirely or partially of coke oven gas, is burned in the heating flues (12, 12?), thereby producing an exhaust gas which contains nitrogen oxides. A reducing agent is fed to the exhaust gas at a temperature between 700° C. and 1100° C. and the proportion of nitrogen oxide in the exhaust gas is reduced by a homogeneous gas reaction between the reducing agent and the nitrogen oxides. The exhaust gas is subsequently passed through a regenerator (4) for heat recovery.

Abstract: A device for compensating for deviations from a coaxial arrangement of components of a regulating organ for controlling and regulating the gas pressure of a coke oven chamber includes a water inflow into an immersion cup having a water immersion that seals the free gas space of a coke oven chamber versus the exterior atmosphere. The level of the water immersion represents a regulation to control the gas pressure in the coke oven chamber. The regulating arrangement also includes an immersion pipe which at its end is submerged in the water and at this end forms a specially shaped crown pipe. The regulating arrangement also has a regulating organ to control and regulate the water inflow.

Abstract: A method is provided for operating a coke oven battery including many identical coking chambers, a raw gas receiver, and throttle devices arranged in the receiver for individually controlling the gas pressure in the chambers. Each throttle device includes an immersion bucket acted upon by water. Gas lines terminating in immersion pipes in the immersion buckets connect the chambers with the receiver. Throttle devices are employed that include an overflow that can be vertically adjusted by an actuating drive for controlling the liquid level in the immersion bucket. For a coking chamber to which a pressure control device is allotted, the setting signals for the actuating drive allocated to the time pressure curve in the process of carbonizing coal to coke are recorded as a position-time curve. The actuating drives of throttle devices that are allocated to coking chambers without pressure control devices are controlled according to the position-time curve.

Abstract: A device for controlling the gas pressure in a coke oven chamber, has an immersion cup, to which water is supplied, and with an immersion pipe which is connected to the gas space of the coke oven chamber and terminates in the, immersion cup. The immersion cup has an overflow and a closeable outflow. To control the liquid level, an outflow pipe for water is provided, the inflow-side end of which projects into the immersion pipe and contains casing-side inflow orifices for the inflow of water. Within the outflow pipe is arranged a slide which is open on both end faces and which closes the inflow orifices of the outflow pipe in the longitudinal direction according to the position of said slide and forms a vertically adjustable overflow for the water flowing into the outflow pipe.

Abstract: The invention relates to a device for controlling the gas pressure in a coke oven chamber comprising an immersion cup, which supplies water, and an immersion pipe, which is connected to the gas space of the coke oven chamber and terminates in the immersion cup. The immersion cup comprises an overflow and a closeable drain. The invention provides that, in order to control the level of the liquid, a drain pipe for water is provided whose inlet side end projects into the immersion pipe and whose lateral surface side is provided with inflow openings for admitting water. A slide, which is open on both faces, is placed inside the drain pipe, closes the inflow openings of the drain pipe according to its position in the longitudinal direction and forms a vertically adjustable overflow for the water flowing into the drain tube. The inflow side end of the drain pipe is surrounded by a siphon pipe, which closes the drain pipe at the top and forms an annular channel.

Abstract: The object of the invention is a method for operating a coke oven battery comprised of a large number of identical coking chambers, a raw gas receiver, and throttle devices arranged in the raw gas receiver for individually controlling the gas pressure in the coking chambers. The throttle devices each comprise an immersion bucket that is acted upon by water. The coking chambers are connected with the raw gas receiver by gas lines terminating in immersion pipes in the immersion buckets of the throttle devices. According to the invention, throttle devices are employed that comprise an overflow that can be vertically adjusted by an actuating drive for controlling the level of the liquid in the immersion bucket. For a coking chamber to which a pressure control device is allotted, the setting signals for the actuating drive allocated to the time pressure curve in the process of carbonizing coal to coke are recorded in the form of a position-time curve.