一貫作業煉鋼廠中，原料堆置場為主要的逸散性粒狀物來源，依現行法規規範，原料堆置場的排放行為主要分成5項，分別是堆置風蝕揚塵、取料揚塵、卸料揚塵、車行揚塵以及輸送帶揚塵，目前環保署制定之排放係數主要參考PEDCo推估法，然而PEDCo之排放係數公式及參數值皆源自於美國各地進行之實驗結果，故其氣候條件、排放源狀況等都與台灣本土之情形不同，可能造成排放量之錯估，因此在現地進行監測，並建立自廠排放係數才能正確推估實際的排放量。
為實地量測排放係數，本研究於107年12月、108年1月及108年5月於中國鋼鐵公司中之原料堆置場進行採樣，實驗之基本原理為質量平衡法，其概念為上下風處之質量差即為該汙染源之排放，本研究分別針對車行揚塵、堆置風蝕揚塵、取料揚塵以及卸料揚塵之TSP及PM2.5排放係數進行現地採樣，採樣方式為於排放源上下風處各架設高量採樣器及PM2.5採樣器，此外為量測垂直向之濃度變化，本研究使用高空作業車掛載滑輪，並使用攀岩繩吊掛光學微粒計數器，藉由上下拉升的方式量測垂直向之質量濃度變化。而各排放行為之排放係數受到很多影響因子影響，因此本研究除了現地量測排放係數外，同時針對各揚塵之影響因子進行現場量測以及調整，後續可利用計算出之排放係數與影響因子進行迴歸，求得排放係數推估公式，進而得到排放係數在不同環境條件下之數值，以更正確的估算排放量。
根據本研究之現地量測結果車行揚塵TSP排放係數之結果介於1g/VKT至1258g/VKT之間，車行揚塵PM2.5排放係數之結果3g/VKT至103g/VKT之間。堆置風蝕揚塵排放係數結果中，鐵礦堆置之TSP排放係數0.002g/ton/hr至0.318g/ton/hr，煤礦堆置之TSP排放係數介於0.01g/ton/hr至0.484g/ton/hr，鐵礦堆置之PM2.5排放係數介於0.0002g/ton/hr至0.025g/ton/hr，煤礦堆置之PM2.5排放係數介於0.0004g/ton/hr至0.0729g/ton/hr。鐵礦取料之TSP排放係數介於1.87g/ton/hr至27.706g/ton/hr，煤礦取料之TSP排放係數介於0.677g/ton/hr至70.178g/ton/hr，鐵礦取料之PM2.5排放係數介於0.046g/ton/hr至0.697g/ton/hr，煤礦取料之PM2.5排放係數介於0.026g/ton/hr至0.260g/ton/hr。鐵礦卸料之TSP排放係數介於0.019g/ton/hr至22.037g/ton/hr，煤礦卸料之TSP排放係數介於0.067g/ton/hr至26.283g/ton/hr，鐵礦卸料之PM2.5排放係數介於0.005g/ton/hr至0.277g/ton/hr，煤礦卸料之PM2.5排放係數介於0.006g/ton/hr至0.262g/ton/hr。
本研究所建立之公式如下所示: 鐵礦堆置風蝕揚塵TSP公式為EF=1.719*10-5S3.443U0.326，煤礦堆置風蝕揚塵TSP公式為EF=0.013S0.658U1.100，鐵礦堆置風蝕揚塵PM2.5公式為EF=0.005S1.863U1.038M-1.293，煤礦堆置風蝕揚塵PM2.5公式為EF=0.0006S0.952U1.591，鐵礦取料揚塵TSP公式為EF=0.025S2.102U2.623，煤礦取料揚塵TSP公式為EF=1.250S0.377U0.491，鐵礦取料揚塵PM2.5公式為EF=1.085*10-5S3.694U3.167，煤礦取料揚塵PM2.5公式為EF=67.944S0.787U3.301M-4.272，鐵礦卸料揚塵TSP公式為425.258S2.248U1.643H1.734M-3.875，煤礦卸料揚塵TSP公式為0.387S0.392U0.640H1.325M-0.793，鐵礦卸料揚塵PM2.5公式為0.0008S1.412U1.428H0.553M-0.129，煤礦卸料揚塵PM2.5公式為0.0008S0.788U5.030H4.864M-2.701。車行揚塵TSP公式為EF=0.757S1.701W0.328V0.832M-0.506，車行揚塵PM2.5公式為EF=3.61*10-5S0.795W3.448V0.540。
並且可根據實驗中之各影響因子範圍，帶入排放係數公式中，得到適用於現場各排放行為之排放係數範圍，鐵礦堆置風蝕揚塵TSP排放係數範圍介於0.002g/tons/hr~0.053g/tons/hr，煤礦堆置風蝕揚塵TSP排放係數範圍介於0.001g/tons/hr ~0.342g/tons/hr，而鐵礦取料揚塵TSP排放係數範圍介於0.101g/tons/hr ~78.5g/tons/hr，煤礦取料揚塵TSP排放係數範圍介於1.13g/tons/hr ~6.54g/tons/hr，鐵礦卸料揚塵TSP排放係數範圍介於0.008g/tons/hr ~1452g/tons/hr，煤礦卸料揚塵TSP排放係數範圍介於0.193g/tons/hr ~7.69g/tons/hr。而車行揚塵TSP排放係數範圍介於19 g/VKT ~1180g/VKT，車行揚塵PM2.5排放係數範圍介於3g/VKT~42g/VKT。

The emission of raw material operations is the main source of fugitive particle in integrated steel plant. However the emission factor formulated by the EPA mainly refer to foreign research, the climatic conditions and emission sources is different from that in Taiwan, so may result in a miscalculation of emissions. Therefore, establishing a self-factory emission factor can correctly estimate the actual emissions.
In order to measure the emission coefficient in the field, the study was conducted at the raw material storage yard of a factory in Kaohsiung in December, 2018; January, 2019 and May,2019. The basic principle of the experiment is the mass balance method, the concept is that, source emissions is the difference of concentration between up and down wind. The sample method is set up high volume sampler and PQ200 to sample TSP and PM2.5. additionally, this study used the aerial work vehicle which mount the pulley, and use the climbing rope to hang the optical particle counter, and measure the vertical direction concentration by pulling up and down.
According to the local measurement results of this study, loading dust has larger emission factor than unloading dust and pile wind erosion dust. And the emission factor of each emission behavior can be imply by multiple linear regression to obtain an emission factor estimation formula related to the impact factor, which can reflect the emission factor under different conditions.

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