The furnace system in a coking battery should provide the required uniformity in the heat distribution over the height and length of the coking chamber as well as the necessary temperature level in order to obtain a given quantity of well-conditioned blast-furnace coke. Reliable information is required on the actual state of the lining of the heating system and coking chamber walls in relation to the working life and conditions in a coking battery in order to provide for regulating the heating conditions. We devised a method for diagnosing the state of the heating system for the No. 1-bis battery at Zaporozhkoks Company, which consists of seven oven chambers in the PVR system. The design and other characteristics of the ovens have been given in [1], which have fuel gas and air input to battery No. 1-bis from below. The battery includes a coking chamber with heating walls adjoining it on both sides, which are linked by oblique ducts to regenerators communicating with the feed channels. Those channels are connected to horizontal flues on both sides of the battery, which themselves are linked to a common flue leading to the chimney. The system for supplying the heating gas consists of a gas pipe joined by an inlet tube to a collector serving adjacent heating walls (Fig. 1). The tube is installed with nonreturn and reversing valves, which serve to supply the furnace gas to the heating walls. The nonreturn valve serves to disconnect the gas supply from the heated walls. The reversing valve provides for switching the supply of gas into the even-numbered or odd-numbered heating channels. The vertical nozzle channel serves to supply the gas to the heating channel in the separating wall between the regenerators.
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