燃燒設施能源使用效率提高之研究

A Study for Effective Energy Usage of Burning Systems

曾彦魁(Yan Kuei Tseng)

《中華生質能源學會會誌》 27卷3&4期 (2008/12) Pp. 95-99

https://doi.org/10.6385/JBESC.200812.0095

摘要

本研究係將現有習用之燃燒設施加以改良，來達到生產條件不變下，油耗卻有效降低的目的。本研究之方法，有別於過去將燃油和空氣以高壓導入燃燒室中，使其混合後燃燒之方式，而將進油與進氣機構稍做改良，使燃油與空氣於進入噴油嘴前先做適當混合，再將其導入燃燒室中與二次進氣混合燃燒。當燃油與空氣預先混合後，其黏滯性降低，有助於改善燃油之霧化程度，從而提高燃燒效果。另因燃油與空氣混合後，其密度降低，故需有較大之噴油嘴口徑以維持足夠之進油量，此項修正同時具有讓噴油嘴減少被燃油中雜質堵塞的效果。為得到需要之火焰長度與寬度，噴油嘴的開口角度與進油之壓力須做適當之調整。經實驗結果顯示，如以習用之壓力鍋爐做測試，本研究之燃燒機節能效率可以達25% ~ 40% , 而如以習用之負壓爐做測試，節能效果也可以達到15% 以上。

並列摘要

In this research, the used burners o f boiler and furnace have been remodeled for saving energy and reducing pollutant emission. By premixing inlet oil with certain amount of air, the viscosity o f oil w ill decline; it may downsize the oil mists injected from nozzle. Owing to increasing the contact surface between oil drops and air, one will get better burning efficiency of burner. Since the oil and air are premixed, the density of it will decline too. In order to inject enough fuel into combustion chamber, the outlet dimension o f nozzle was enlarged, which also may prevent oil stock by unexpected particles or dirt. Also, the outlet angle of nozzle as well as the pressure of air is used for tuning the optimized burning condition. From the results of sequential tests, the fuel consumption of burner for difference boiler systems are reduced by 25% to 40%, and there are reduced more than 15% for furnace systems.