Abstract: A method and a device for the hot-repairing of the heating flues of a coke-oven battery according to which the completed sections of a heating flue still under construction are heated by means of a heated gas. The heated gas comprises the air usually provided for combustion in the heating flues during coking operations. The air is guided through the flow paths provided for in the coke-oven battery for combustion air and waste gases as well as through the regenerator, heated as it passes through the flow paths and then guided through the heating flues to be repaired. The completed section of the heating flue is separated from the non-completed portion by an air-reversion device that also directs the heated air.

Abstract: According to the invention the heating system for regenerative coke oven batteries that can be heated with rich gas and/or lean gas or mixed gas is provided comprising vertical flues cooperating in pairs, each vertical flue being connected to a regenerator for preheating the air and, in the case of lean gas operation, for preheating the lean gas or mixed gas. High and low combustion stages, as well as structure defining an internal flue gas return at levels above a flue base are provided. Discharge openings are provided at at least three levels for supplying each flue. A base discharge opening is provided at the flue base directly connected to regenerators. Hollow communicating channels are defined for connecting the regenerators to discharge openings located above the flue base. The hollow communicating channels are preferably formed in each communicating wall connected to a discharge opening leading only to one adjacent flue.

Abstract: Coking system, wherein the coking blends particularly based on hard coal, are fed batchwise to a reactor (1), which is heated indirectly by heat recovery in regenerators (I, II) or recuperators, whereby the reactor is built as a high-capacity coking reactor (100), several high-capacity coking reactors are combined to form a reactor block and the high-capacity coking reactors are built as mutually independent modules, whereby each module can be operated or optionally replaced independently of the neighboring modules, with little or no impairment of the operation of the neighboring modules. The individual reactors are independently operatable in terms of statics and heat supply. The regenerators, or recuperators (I, II, R, R') can be arranged laterally or underneath the reactor chamber. Neighboring reactors can have a common intermediate wall (2). The reactor chambers have a width of at least 0.7 m, a height of at least 8.5 m and a length of at least 18 m.

Abstract: There is disclosed a heating system for regeneratively heating a coke oven battery having twin-heating flues extending side-by-side transversely of the length of the coke oven battery. Halves of the twin-heating flues are separated by a flue midfeather that forms a gas flow space at the top thereof. Between twin-heating flues, there is a heating wall midfeather extending up to the oven crown. Regenerators below the oven sole extend transversely to the coke oven battery with each regenerator coupled by three passageways to the heating flues. Two regenerators are associated with each twin-heating flue. A first passageway extends to the bottom part of one-half of one twin-heating flue, a second passageway extends to the bottom part of one-half of an adjacent twin-heating flue with these two flue halves separated by a heating wall midfeather.

Abstract: A regenerative coke oven battery that produces a coke cake having a low vertical temperature differential throughout its mass. The heating flues are defined by header walls having ducts for air or lean gas and outlet slots incorporated along the vertical length of the header wall which slots connect the ducts with the flues. The flues are combined into groups connected at their upper ends with a horizontal bus channel which communicates by a cross-over duct with a similar horizontal bus channel on the opposite side of a coking chamber.

Abstract: Vertical heating flues between adjacent coke oven chambers include rich-gas burners extending essentially to progressively increasing elevations in the flues in a manner such that the burner exit zones increase from flue-to-flue to a maximum elevation at the pusher side of each oven chamber. At the pusher side, the coke oven chamber has a minimum width which increases to a maximum width at the coke side where the rich-gas burners have exit zones at the lowest elevation in the heating flues. Such a rich-gas burner arrangement may additionally include rich-gas burners with exit zones at the soles of alternate heating flues while the remaining heating flues contain the burners extended to progressively increasing elevations. When the coke oven chambers are heated by twin-heating flues, the rich-gas burners extend vertically from the soles of only one heating flue in each of the twin-heating flues.

Abstract: After replacement of the walls of one chamber of a coking battery this one chamber is heated up by withdrawing relatively hot air from another still-hot chamber of the coking battery and injecting it into the cold chamber. This is done by means of a conduit extending between the two chambers and provided with an internal nozzle that conducts the hot gas from the hot chamber to the cool chamber by jet-pump action. This hot gas is mixed with relatively cool air so as slowly to heat the cool chamber up.

Abstract: A coke oven battery includes a plurality of coke ovens heated during certain time intervals and the heat supply being reduced subsequent to these time intervals. First valve means controls the flow of combustion air for the ovens and second valve means controls the flow of waste gases recovered from the ovens and recycled back to the ovens. A first primary activating means activates the first and second valve means. Third valve means controls the flow of decarbonizing air for the ovens and a second primary activating means activates the third valve means. Fourth valve means controls the pressure in the ovens and first auxiliary activating means activates the fourth valve means. Fifth valve means controls the flow of fuel for the ovens and second auxiliary activating means activates the fifth valve means. The coke ovens may be arranged in groups so that the coking conditions at any time are the same for all ovens of a given group.

Abstract: A machine for reversing the heating cycle of a coke oven battery includes mechanism to lock out either one of two reversing rods in proper time sequence so that only three of the normal four reversing rods are operable for the selected mode of underfiring of the battery. Shifting or change over can only be accomplished at the neutral position which occurs when all fuel gas to the battery is shut off. The shifting or change over initiates the change over of rich or lean underfiring gas and also is interlocked so that the main drive cannot operate until all change over functions are completed.

Abstract: A single regenerative coke oven battery is constructed and operated as a plurality of individual and separate groups of heating walls, each group capable of independent reversal and heating cycles. During slow-down operations, one or more of the individual groups of heating walls is shut down for a preselected time period, with no flow of combustion air, fuel and waste gas in the heating walls, while the remainder of the groups are operated at substantially full air and gas flow. The battery is capable of a slow-down operation while avoiding uneven coking and variations in the amount of byproduct coke oven fuel gas generated.

Abstract: Regenerative heating of a coke oven battery includes the combustion of lean gas and air in heating chambers disposed between the coking chambers or, alternatively, if desired, the combustion of rich gas and air in the heating chambers. Each heating chamber includes a plurality of header walls forming upgoing and downgoing heating flues. Each header wall includes at least one internal duct in open communication with a plurality of vertically-spaced exit ports at the common side of a header wall. The internal ducts receive either preheated air or preheated lean gas for combustion in a heating flue. The cross-sectional size of the exit ports to discharge air in a given heating flue increases upwardly from port to port along the header wall whereby the amount of air supplied at the sole and lower part of the heating flue is insufficient for complete combustion of the amount of lean gas supplied thereto.

Abstract: In one embodiment valve means are provided in the pipe connecting the fuel gas main and air supply main to the respective headers to simultaneously supply a portion of the air to the headers associated with the "on" flues and a portion of the air to the headers associated with the "off" flues. The air supplied to the headers associated with the "on" flues mixes with and dilutes the rich fuel gas to suppress the tendency to deposit carbon in the vertical riser ducts of the "on" flues. The air supplied to the headers associated with the "off" flues removes the carbonaceous material deposited in the vertical riser ducts of the "off" flues. In another embodiment induction or recirculation ducts are provided between the vertical riser ducts of interconnected flues to admix a portion of the waste gas from the "off" flues with the rich fuel gas flowing upwardly through the vertical riser ducts of the "on" flues.