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題名 | 中鋼煉焦場能源使用效率之提昇=Improvement on Heating Efficiency of Coke Oven at CSC |
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作者 | 洪明在; 陳朝玟; | 書刊名 | 技術與訓練 |
卷期 | 25:1=200 2000.02[民89.02] |
頁次 | 頁59-70 |
專輯 | 能源與環保專集 |
分類號 | 454.9 |
關鍵詞 | 火管溫度; 火落時間; Flue temperature; End point of coking; |
語文 | 中文(Chinese) |
中文摘要 | 煉焦製程主要為產製高爐所使用的焦炭。基本上,煉焦製程為一組龐大的燃燒系統,總能耗多,每年總值約在七億元左右,若能有些微的節省,其效益就相當可觀,並能減輕污染物之產出及排放。 本研究整體架構分為爐團溫度之控制及個別爐室溫度分佈之調整。其中爐團溫度之控制,係以判定之火落時間,來預測適當之總煉焦時間,並與設定值比對,來調整總投入熱量,並提供稼動率與火管溫度之對照表,給予現場於設定爐溫時使用。其中爐室間以及個別爐室內溫度分佈,乃以爐溫偏差診斷系統來調整,由每班所測火管溫度資料經修正及計算後,可顯示橫縱向溫度偏差之爐室或位置。這些偏差經由現場人員的調整,整個溫度分佈將較為均勻,可提高燃氣的使用效率。 綜合以上結果,在煉焦場之爐溫控制,已使得個別爐室爐溫偏差現象大幅改善。以三階煉焦爐為例,其設定溫度之控制(130%稼動率為基準),已由年平均1262℃,降至1250℃,更有降至1240℃左右的實績。這些改善,不僅節省能源,且焦炭的強度與平均粒度等品質指數亦相對提升。 |
英文摘要 | Coke oven is basically a huge heating system, therefore, the proper monitoring, and management of the operational thermal state of the whole oven becomes particularly important. An ideal temperature distribution is to ensure the quality of coke, and to achieve the goals of decreasing fuel consumption, proloaina the battery life and reducing the air pollution. A combustion management system of coke oven, consisting of two subsystems respectively for setting proper coking, time, diagnosing thermal state of coke oven in horizontal and longitudinal direction, was developed. It aimed to control the average oven temperature to the suitable level and to diminish the deviations of temperature between each heating wall. In subsystem 1, with the measurement of gas temperature at ascending pipe, a coking completion table composed of production ratio, coal moisture and flue temperature were established for setting the target flue temperature. In subsystem 2, the measured flue temperature was corrected by a reversed cooling, curve and compared with an ideal transversal profile. A precise thermal states of battery heating was therefore induced. Since this combustion management system of coke oven was adopted, the remarkable heating improvement has been achieved. For example at Phase III, the average flue temperature of coke oven was decreased from 1262℃ to 1240 ℃, the fuel was thus saved, and the wall temperature was more even and the coke qualities were also improved. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。