Abstract
The hydrodenitrogenation (HDN) of Longkou shale oil were carried out in microscale trick-bed reactor over a commercial NiW/Al2O3 catalyst with high HDN activity. The effects of temperature, pressure, liquid hourly space velocity (LHSV) and hydrogen/oil ratio on the conversions of total, basic and non-basic nitrogen compounds were investigated at various conditions (340-420°C, 0.2-2h-1, 4-9MPa and 400-1000 L/L). The results show that basic nitrogen compounds have higher HDN reactivity than non-basic nitrogen. The distributions and species of nitrogen compounds in Longkou shale oil were also investigated. About 33% of total nitrogen is present in big molecules with high boiling point. The nitrogen compounds in Longkou shale oil are mainly composed by seven kinds of components ( nitriles, anilines, pyridines, quinolines, acridines, carbazoles and indoles).
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