本研究探討藉感應加熱技術熱解處理生
物污泥轉化國內大宗食品加工業所產生之生
物污泥為生質燃油之可行性;藉由控制快速
熱裂解反應爐的停留溫度、升溫速率和停留
時間等三個主要操作條件,在輔以樣品粒徑
大小為0.5mm 及冷凝收集溫度為-10℃的試
驗條件下,來求取生質燃油的最佳產率。研
究結果顯示,操作條件對於生質燃油產率皆
有所影響;三種生物污泥的最高焦油產率可
達25-30%左右。
對冷凝收集的生質焦油產物做其物理和
化學特性分析,包括熱值、水份、主要元素、
pH 值、傅利葉紅外線光譜(FTIR)及氣相層析
質譜(GC-MS),顯示所得之產物熱值偏低、
呈現酸性、含氧量偏高,與其他生質廢棄物
之結果類似,但所含多環芳香族碳氫化合物
(PAHs)則低於農業廢棄物之結果,若要實際
運用所得生質焦油,則須進一步去除所含水
份,以提昇(upgrading)其熱值。 The objective of the research was to study
fast pyrolysis with using induction-heating for
manufacturing the bio-fuel from the
food-processing wastes. Under the conditions
of controlling holding temperature, heating rate,
and hold time, the optimal yield of bio-oil was
approached in the present study. The
experimental results showed that these
operating parameters had significant effect on
the yield of bio-oil, which could be obtained at
the percentage yield of 25-35% from three
bio-sludges.
The physical and chemical of bio-oil
collected from the cryogenic condensation
were further conducted, including heating
value, elemental analysis, pH value, Fourier
Transform infrared (FTIR) and gas
chromatograph-mass spectroscope (GC-MS).
The characteristics of resulting bio-oils showed
to be high contents of water and oxygenated
components, resulting in low pH and low
heating values. The results were very similar to
bio-oils obtained from other biomass materials.
The contents of polycyclic aromatic
hydrocarbons (PAHs) in the bio-oils, however,
were significantly lower than those from
agricultural wastes. Therefore, the bio-oil
should be further upgraded to increase its
heating value by the removal of water while it
was practically used as bio-fuel.