廢熱回收技術在中鋼的應用績效

Recovery Performance of Waste Heat at China Steel Corporation

陳俊達(Jun-Dar Chen)

《鑛冶：中國鑛冶工程學會會刊》 40卷3期 (1996/09) Pp. 86-94

https://doi.org/10.30069/MM.199609_40(3).0010

摘要

廢熱排放代表能源損失，若能經由適當技術予以回收利用，將有助於提高能源的利用率。充份瞭解回收技術的發展現況，就成為廢熱再利用研究的重要課題。本文首先統計中鋼廢熱資料，據以掌握全廠廢熱全貌，並篩選規模較大的廢熱源，回顧回收技術的發展現況，作為日後引進開發的參考。既有回收技術與廢熱源型態依存度極高，尚未有通用技術推出，回收用途以發電最具潛力。統計民國79年廢熱結果，顯示中鋼全年總能耗量約有26%以廢熱型態排放，其中僅22.5%被回收利用，尚有35.3%待選擇適當技術回收。中鋼在廢熱回收上的績效，整體而言稍遜於日本鋼廠的平均水準。

關鍵字

廢熱回收 ； 廢熱發電 ； 焦炭乾式淬火 ； 鋼胚鋼爐

並列摘要

Recovering waste heat by proper techniques decreases energy loss and upgrades the efficiency of energy utilization. Thorough undersatnding the status of recovery techniques for waste heat becomes an important research topic. This work analyzes the waste heat structure of China Steel Coproration (CSC), and reviews the status of recovery techniques for the sources with larger amount of waste heat. The techniques are strongly source dependent and no generalized technique is available. The waste heat power generation was found to be the most promising reutilization way. The recent structure of waste heat at CSC showed that 26% of the yearly used energy was emit-ted to the atmosphere, and only 22.5% of them was recovered and 35.3% could be recovered with proper technique. Overall speaking, the recovery performance of waste heat at CSC is somewhat lower than the averaged level of Japanese steel plants, and should be further promoted.

並列關鍵字

Waste heat recovery ； Waste heat power generation ； Coke dry queenching ； Slab boiler