Bergwerksverband Gmbh

Rag Aktiengesellschaft

Deutsche Montan Technologie Gmbh

Dmt Corporation

Tyssenkrupp Uhde Gmbh

Thyssenkrupp Industrial Solutions Ag

Thyssenkrupp Uhde Gmbh

Dmt Gmbh & Co. Kg

Arcelormittal Bremen Gmbh

Friedrich Huhn

Hans-Josef Giertz

Friedrich-Wilhelm Cyris

Werner Eisenhut

Frank Krebber

Franz Liesewitz

Frank Rossa

Jürgen George

Heinz Opdenwinkel

Joachim Strunk

Hans J Giertz

Hans J Hammermann

Joerg Brix

Detlef Mattern

Ralf Hoven

Jurgen George

Jörg Brix

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 (') for the indirect heating of the coking chambers. A combustible gas (), which consists entirely or partially of coke oven gas, is burned in the heating flues (&#x2032;), thereby producing an exhaust gas which contains nitrogen oxides. A reducing agent is fed to the exhaust gas at a temperature between 700&#xb0; C. and 1100&#xb0; 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 () for heat recovery. Furthermore, carbon deposits on hot parts of the combustible gas feed are burned with decarbonizing air, wherein, during a regenerator half-period in which the combustible gas feed to one heating flue (&#x2032;) is stopped, the decarbonizing air is introduced into this heating flue (&#x2032;) through the associated burner supply line and combustible gas nozzle (&#x2032;) and is discharged from another heating flue () with the hot exhaust gas. According to the invention, metered amounts of the reducing agent are fed into the decarbonizing air and, together with it, brought into contact with the hot exhaust gas.

Method of reducing nitrogen oxides from coke-oven flue gas

The invention relates to a method and a device for cleaning the door of a coke oven, said door comprising a sealing edge and a membrane that is attached to the door panel of the coke oven. According to said method, cleaning tools comprising jet nozzles, which are supplied with a flow medium at high pressure, are situated and displaced back and forth in the region between the sealing edge and the door panel of the coke oven, in such a way that the interior surface of the membrane and the sealing edge are cleaned. The coke oven door is cleaned directly after the coke oven chamber is opened, by at least one jet nozzle element, which is supplied with compressed air and is displaced along the sealing edges. The jet nozzles are oriented in such a way that the air hits the surface to be cleaned at an acute angle.

Method and device for cleaning the door of a coke oven

The invention relates to a device for sealing a leveling door aperture of a coke oven chamber when loading bulk coking coal. The device includes a housing and a leveling door aperture, a leveling arm, composed of at least side panels and cross spacers connecting the side panels, is guided through the housing and the leveling door aperture. The leveling arm supports means for sealing a cross-sectional area of the leveling door aperture or upstream the leveling door aperture. A controllable or adjustable exhauster is joined to the housing and a measurement point is provided for flow rate measurement.

Device and method for sealing levelling door aperture of a coke oven chamber

Process for gas pressure regulation in the retort of a coke oven

Growing community of inventors

Ratingen, Germany

Friedrich Huhn