富氫製程氣與天然氣混燒之質能平衡理論分析

A Study on Mass and Energy Balance of FG/NG Combustion

陳冠維(Guan-Wei Chen)

指導教授 ： 侯順雄

共同指導教授 ： 楊俞青(Yu-Ching Yang)

崑山科技大學/工程學院/機械工程研究所/碩士(2012年)

摘要

本研究之目的在於利用理論分析工業混燒煉油製程氣與天然氣的熱能轉換特性，來作為實務上混燒之參考依據。首先探討氫氣對於體積淨熱值、絕熱火焰溫度、燃料使用量、化學計量空氣需求量、及煙道氣排放量等重要參數對燃燒特性的影響，最後分析單燒和混燒煉油製程氣之加熱能力比。結果發現隨著煉油製程氣含氫比例越高，其絕熱火焰溫度也越高，但熱值越低。煉油製程氣與天然氣混燒時，伴隨著煉油製程氣混燒比例的增加，絕熱火焰溫度越高，且燃料體積流率也越大；但空氣體積流率卻隨著煉油製程氣混燒比例的增加而降低，且燃燒產物中二氧化碳與氮氣之生成率均隨著煉油製程氣混燒比例的增加而減少。最後，再更進一步探討是否預熱及增加過剩空氣，對煉油製程氣混燒後之燃燒特性與加熱能力比的分析。

關鍵字

富氫燃燒 ； 質量平衡 ； 能量平衡 ； 絕熱火焰溫度 ； CO2減量

並列摘要

This study focused on the mass and energy balance characteristics of waste fuel gas (FG) and natural gas (NG) combustion, as the reference for FG/NG in the practical applications. First, fuel gas net calorific value, adiabatic flame temperature, volume flow rate, air volume flow rate, flue gas composition, and thermal efficiency were analyzed. Using FG/NG as the input fuel and keeping the total heat release rate at 1MW, the mass and energy balance characteristics of FG/NG combustion were discussed. The theoretical calculations were conducted considering stoichiometric air and without preheat. As the hydrogen content in the FG was increased, the CO2 and N2 content in the flue gas gradually decreased. In comparison of different compositions of FG, the hydrogen content played an important role on adiabatic flame temperature. As the hydrogen content of FG or the FG content of FG/NG mixture was increased, adiabatic flame temperature increased. Additionally, individually or in combination with FG/NG were also discussed under the operating conditions of adding ten percent excess air and/or 0.1MW preheat.

並列關鍵字

Hydrogen-enrichment combustion ； Mass balance ； Energy balance ； Adiabatic flame temperature ； Carbon dioxide reduction

參考文獻

[1]BP statistical review of world energy 2012,

中國，2卷1期，46-53頁，1996。

[13]鄭淑珺，“製程氣混燒分析與對沖流擴散火焰合成奈米碳管研

250, The IFRF Online Combustion Handbook, 2003.

British Petroleum 2012.