- 期刊
應用純氧燃燒於盛鋼桶預熱之節能效益評估
Fuel Saving Assessment on Preheating of a Ladle Using Oxyfuel Combustion
摘要
本研究首先建立一套可預測盛鋼桶預熱之溫度變化之熱傳模型，並據以評估將純氧燃燒導入盛鋼桶加熱爐之節能效益。研究以一15噸小型盛鋼桶加熱爐為標的，先針對空氣燃燒與純氧燃燒進行穩態模擬，聯立求解質量守恆、物種傳輸、能量守恆及熱傳導方程，分析不同燃料流量條件下，對盛鋼桶內壁平均溫度的影響。接續透過求解固相暫態熱傳導方程，研究加熱時間對盛鋼桶效率的影響。結果顯示，相較於空氣燃燒，使用純氧燃燒具有更好的加熱效果。在相同蓄熱量與內壁溫度條件下，純氧燃燒可使用較低的燃料流量與成本來達到相同的加熱效果。成果顯示將純氧燃燒技術應用於盛鋼桶加熱爐系統，不僅可節省燃料，計入純氧之額外成本後，整體成本仍較空氣燃燒低廉。
並列摘要
The purpose of this study is to develop a model for evaluating the heating characteristics and fuel efficiency of applying oxyfuel technology on a 15 ton ladle. A coupled combustion and heat transfer model is constructed. Convective and radiation heat transfers on the inner and outer surfaces as well as conduction inside the ladle wall are considered in the model. Combustion is modeled as perfectly-stirred reactor. The results show that comparing with air combustion, oxyfuel combustion is more energy efficient and cost effective.
延伸閱讀
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