鍋爐燃用含水乳化燃料之燃燒特性

Performance Analysis of Emulsified Fuel burning in an Industrial Boiler

王允利(Yun-Li Wang)

指導教授 ： 侯順雄

崑山科技大學/工程學院/機械工程研究所/碩士(2010年)

摘要

本研究建立了一套可以觀察液滴受熱行為與微爆現象的實驗裝置。研究中觀察液滴在熱環境中微爆的現象和分析相關參數對微爆特性的影響。實驗中藉由熱電偶量測受熱液滴的溫度變化及利用高速攝影機擷取影像進行觀察分析。然後再針對低硫乳化燃料油(含水量CW= 0% 和 20%)進行現場工業爐之實際測試，在現場工業爐之實際測試結果得到，含水20%後的乳化燃油確實可減少35 ppm 的 NOX 排放(降低率約18%)，熱效率也提高10%。節能效益方面，含水油品因本身含20%的水，故比較同未清爐油耗發現在未清爐含水油品其供油率315 L/h實際油耗252 L/h較其不含水油耗低271 L/h燃料油含量節省19 L/h的燃料油，故使用此油品確可達到節省油量及降低廢氣排放的目的，效率方面也提升1.5%左右。

關鍵字

工業用鍋爐 ； 乳化燃油 ； 微爆 ； 二次霧化

並列摘要

In this paper two studies about emulsified fuels are included. In the first one, an experimental system for observing drop heating and micro-explosion of emulsified fuel was established. A high speed camera was used to observe the micro-explosion, and thermocouples were used to measure the temperature in the different stage of this phenomenon. In the second part of this study, an emulsified for low-sulfur fuel oil (water volume Cw = 0% and 20%) were burn in an industrial boiler at normal operation conditions. The results show that by using a 20% water content emulsion, the thermal efficiency can be improved by 10%, and also a reduction of 35 ppm of NOX can be achieved. Another important finding is related to fuel saving. It was observed that when 20% water content emulsion was used, the fuel rate consumption was 252 L/h. In other hand, fuel rate consumption was 271 L/h when pure oil was used, so it is 19 L/h reduction in the fuel rate consumption, and 1.5% increment in the efficiency.

並列關鍵字

Industrial Boiler ； Emulsified Fuel ； Micro-explosion ； Secondary Atomization

參考文獻

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