DEPOSIT CARBON REMOVAL METHOD IN COKE OVEN CARBONIZATION CHAMBER

To provide a deposit carbon removal method in a coke oven carbonization chamber which can realize both push clogging generation inhibition and black smoke generation inhibition.SOLUTION: There is provided a method for inserting a lance into a carbonization chamber for blowing an oxygen-containing gas thereinto to thereby perform oxidation removal of deposit carbon. The method includes: when coal carbonization operation after execution of deposit carbon removal operation in the carbonization chamber is performed, measuring a CO concentration of exhaust combustion gas which passes through a combustion chamber adjacent to the carbonization chamber with the deposit carbon being removed therefrom; comparing a preset upper limit or lower limit management criterion value of the CO concentration of the exhaust combustion gas in the combustion chamber to an actual measured value of the CO concentration of the exhaust combustion gas; and, when deposit carbon removal operation after the coal carbonization operation is performed, 1) if the actual measured value exceeds the CO concentration upper limit management criterion value, shortening a blowing-into time of the oxygen-containing gas and/or decreasing a blowing-into amount per unit time and 2) if the actual measured value is less than the CO concentration lower limit management criterion value, extending the blowing-into time of the oxygen-containing gas and/or increasing the blowing-into amount per unit time.SELECTED DRAWING: Figure 3 【課題】押詰り発生抑制と黒煙発生抑制の両立が図れるコークス炉炭化室の付着カーボン除去方法を提供する。【解決手段】炭化室にランスを挿入して酸素含有ガスを吹き込み付着カーボンを酸化除去する方法であり、炭化室の付着カーボン除去操作を実行した後の石炭乾留操業の際に、付着カーボンを除去した炭化室に隣接する燃焼室を通過する燃焼排ガスのＣＯ濃度を測定し、予め設定した燃焼室の燃焼排ガスのＣＯ濃度の上限又は下限の管理基準値と、測定した燃焼排ガスのＣＯ濃度の実測値とを比較し、石炭乾留操業後に行う付着カーボン除去操作時に、１）実測値がＣＯ濃度上限の管理基準値超の場合、酸素含有ガスの吹き込み時間を短縮、及び／又は、単位時間当たりの吹き込み量を減少させ、２）実測値がＣＯ濃度下限の管理基準値未満の場合、酸素含有ガスの吹き込み時間を延長、及び／又は、単位時間当たりの吹き込み量を増加させる。【選択図】図３