| 摘要 |
<p>There is disclosed a method for conversion of crude tall oil into high-quality diesel fuels comprising the steps of: (a) removal of non-oil contaminants present in the crude tall oil and recovering valuable organic compounds present in the crude tall oil, thereby forming a refined tall oil stream; (b) removal of the volatile fraction of the refined tall oil stream from step a), thereby forming a volatiles free oil stream comprising organic components with boiling points, at atmospheric pressure, of 170 degrees C or higher; (c) separation in a vacuum distillation column of the volatiles free oil stream of step b) into two process streams or phases wherein a first process stream or phase is substantially comprising components with boiling points, at atmospheric pressure, in the range of 170-400 degrees C and a second process stream or phase is substantially comprising components with boiling points, at atmospheric pressure, over 400 degrees C; (d) lowering the oxygen content in the stream comprised of components with boiling points in the range 200- 400 degrees C from step c) by decarboxylation and/or decarbonylation.</p> |
