臺灣博碩士論文加值系統

中文摘要　　本研究使用煙道PAH採樣系統及PS-1採樣器，
對十座鍋爐煙道廢氣及石化區周圍大氣進行PAH採樣分析。鍋爐所使用燃
料包括：重油、柴油、天然氣與重油混燒及煉焦爐氣與高爐氣混燒四種。
主要研究項目包括：煙道廢氣中21種PAHs之濃度、粒狀物相含量、排放率
及排放係數，並比較煙道廢氣與周圍大氣中PAHs之差異性，21種PAHs之分
析儀器以氣相層析／質譜儀(GC/MS)為之。　　全部32個煙道廢氣採集樣
本之總PAHs濃度值介於11.6∼363ug/Nm3之間，平均值為75.3ug/Nm3，而
石化區周圍大氣之總PAHs濃度為1,203ng/m3。煙道廢氣中以PAHs總質量而
言，二、三及四環之PAHs所佔比例分別為57%、13.6%及24.4%。因此，煙
道廢氣中之PAHs主要以低環數佔優勢。煙道廢氣中PAHs大多以氣相形態存
在，平均氣相PAHs之濃度約佔總PAHs大多以氣相形態存在，平均氣相PAHs
之濃度約佔總PAHs濃度之96%。　　本研究測得PAHs之排放係數分別為：
燃燒重油之煙囪為2,750ug/kg-fuel；燃燒柴油之煙囪為1,170ug/kg-fuel
；天然氣與重油混燒之煙囪為1,150ug/kg-fuel；煉焦爐氣與高爐氣混燒
之煙囪為83.2ug/kg-fuel，其中以Nap為最具優勢。燃燒重油及柴油之煙
道廢氣之BaP排放係數非常接近，為10.0ug/kg-燃料或1.0ng/kcal-熱值。

Abstract A PAH(Polycyclic Aromatic Hydrocarbon) stack-
sampling system and PS-1 sampling system were used to
investigate the PAH emission for 10 industrial boilers and for
the ambient air of petrochemical-industry (PCI) area. The fuels
used for these 10 boilers include a heavy oil, a diesel, a co-
combustion of heavy oil and nature gas (HO+NG) and a co-
combustion of coke oven gas and blast furance gas (COG+BFG). The
main objectives of this study are to investigate the
concentration, composition, emission rate and emission factor of
twenty-one individual PAHs in the boiler flue gas, and compared
the difference of PAHs in the boiler flue gas and in ambient air
Twenty-one individual PAHs were analyzed primarily by gas
chromatography / mass spectrometer (GC/MS). Total-PAH
concentration in the fuel gas of 32 measured data for these 10
boiler stacks ranged between 11.6 and 363 ug/Nm3 and averaged
75.3 ug/Nm3. Total-PAH concentration in anbient airof PCI
averaged 1203 ng/m3. In the boiler flue gas, the mean fraction
of PAH-homologue mass(F%) counted for the total-PAH mass were
57%, 13.6%, 24.4% and 24.4% for the 2-ring, 3-ring and 4-ring
PAHs,respectively. ThePAHs in the stack flue gas were dominant
in the lower molecular weight PAHs. Phase distribution of the
total-PAHs in the flue gas was mainly inthe gas phase. Phase
distribution of the total-PAHs averaged 96% in the gas phase.
The emission factors of total-PAHs were 2750, 1170, 1150 and
83.2 ug/kg-fuel for the heavy oil, diesel, HO+NG and COG+BFG
fueled-boiler,respectively. Nap is a most predominant PAH
occurred in the stack flue gas.The emission factor of BaP for
both heavy oil and diesel-fueled boilers arefairly constant and
are approximately 1.0 ng/kcal of heat generated or 10.0 ug/kg-
fuel consumed.