高蠟份原油蠟份組成與生產處理方式探討

Discussion on Wax Composition and Production Treatment of Wax Crude Oil

葉世國(Shih-Kuo Yeh)；蕭良堅(Liang-Jian Shiau)；徐敬閎(Jing-Hung Hsu)；許峻嘉(Chun-Chia Hsu)；林政遠(Cheng-Yuan Lin)；翁榮南(Jung-Nan Oung)

高蠟份原油 ； HTGC熱脫附 ； 降凝劑 ； Wax Crude Oil ； HTGC Thermal Desorption ； Pour Point Depressant(PPD)

石油季刊

56卷1期（2020 / 03 / 01）

29 - 42

繁體中文

高蠟份原油的組成分析，藉由熱脫附進樣HTGC（High temperature gas chromatography）系統的技術，顯示顯晶蠟與微晶蠟主要碳數範圍分布不同，顯晶蠟的碳數較低，且集中在C_(20)～C_(30)，微晶蠟的分布則呈現在C_(30)～C_(40)較高，之後逐漸遞減；比較顯晶蠟、微晶蠟與降凝劑的分析結果，M-2 DST#2油樣較M-1 DST#2多一些較輕的蠟份，因蠟份組成不同影響降凝劑效果上的差異。降凝劑為支鏈的化學結構與高蠟份原油中的蠟份組成對於流動點降低會有影響，故添加多種降凝劑可得較佳的效果，同時額外添加輕質油料作為溶劑對於相對比例較高的C_(30)以上油樣可以顯著降低其流動點，顯示對於組成不同之高蠟份原油需有不同的降凝劑選擇與添加。

The composition analysis of high wax crude oil, by the technique of thermal desorption of HTGC system, shows that the main carbon number range of the crystalline wax and the microcrystalline wax is different, the carbon number of the crystalline wax is lower, and it is concentrated in C_(20)~C_(30). The distribution of microcrystalline wax is higher in C_(30)~C_(40), then gradually decreases; compared with the analysis results of crystalline wax, microcrystalline wax and pour point depressant, M-2 DST#2 oil sample is better than M-1 DST#2 More lighter wax fractions, depending on the composition of the wax, affect the difference in the effect of the pour point depressant. The pour point depressant is a branched chemical structure and the wax composition in the high wax crude oil has an effect on the reduction of the pour point. Therefore, adding a plurality of pour point depressants can obtain a better effect, and additionally adding a light oil as a solvent for the relative A higher proportion of oils above C_(30) can significantly reduce their pour point, indicating that different pour point depressants should be selected and added for high waxy crude oils with different compositions.

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