廢棄潤滑油是一個都市相當常見的廢棄物，台灣政府自2012年起不再回收廢棄潤滑油，改為全民間機構自行回收收購，廢棄潤滑油可作為燃油取代重油使用。本研究將從幾個基礎方面，討論再生潤滑油的燃燒特性。
熱重分析儀串接傅立葉轉換紅外線光譜儀(TG-FTIR)，研究再生潤滑油在溫度控制條件下的變化趨勢，TG-DTG曲線可計算獲得燃燒特性參數，例如引燃溫度、燃燼溫度、可燃性指數、綜合燃燒指數並與重油相比，得知再生潤滑油含有較佳的燃燒性質。FTIR可記錄實驗期間釋放氣體的吸收峰值，判斷對應燃燒溫度時其排放的氣體，得知再生潤滑油所排放的〖CO〗_2、〖SO〗_2、NO都比重油少。
懸掛液滴實驗系統探討再生潤滑油燃燒過程中的微爆現象，再生潤滑油是一個多組份的燃料，在整個受熱過程中持續發生微爆現象，當 液滴受熱環境溫度為600℃時，再生潤滑油滴產生燃燒反應，並形成一個非預混火焰非預混火焰包圍在液滴周圍。再生潤滑油的燃燒特性現象燒特性現象可以使用d^2-Law以一條直線加以近似，得到再生潤滑油A燃燒速率係數K為1.64mm/s，再生潤滑油B燃燒速率係數K為8.74mm/s。
反應動力學可根據TG曲線得出反應的活化能，預測燃燒速率與反應難易程度，使用FWO可以算出再轉化率70%前其較有參考價值，燃燒過程再生潤滑油A的活化能較為穩定在70-90kJ範圍內，在生潤滑油B的活化能較為穩定在80-100kJ範圍內，而重油再轉化率30%時，活化能為79kJ，但在轉化率50%時，其活化能高達162kJ，這表示再生潤滑油是比重油容易進行燃燒反應，且比重油來的穩定。

The combustion behaviors of heavy fuel oil (HFO) and two types of refined lubricating oil (RLO) with different filtration condition are studied using TGA-FTIR analysis. In comparison with HFO, RLO has stronger oxidation rate and lower gas emissions such as 〖CO〗_2, CO, 〖NO〗_x, and 〖SO〗_x.
This study uses the suspended droplet experimental system to explore the thermal behavior, micro-explosion phenomenon and combustion mode of HFO and RLO droplets at different ambient temperatures (300 °C, 400 °C, 500 °C and 600 °C). The combustion rate K for refined lubricating oil A and refined lubricating oil B at 600 °C is 1.64mm/s, 8.74mm/s. The results show that the combustion rate and the micro-explosion performance of the droplets with highly filtered refined lubricating oil B are the best among these oils.
To properly evaluate the thermal stability of combustion rate and thermal kinetics characteristics for HFO and RLO, using TGA curve for analysis.Thermal kinetics characteristics were calculated by Flynn-Wall-Ozawa method. It has more reference value before the conversion rate of 70%. During combustion, the activation energy of recycled lubricant A is stable in the 70-90kJ.The activation energy of recycled lubricant B is stable in the 80-100kJ. At 30% reconversion rate of HFO, the activation energy is 79kJ, but at 50% conversion rate, the activation energy is as high as 162kJ. This means that RLO is easier to burn than HFO and is stable rife compared to HFO.

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