Smith says that with the solvent process, oil sands are still economical even if oil is $30 to $40 per barrel, close to what it was in the 1990s and early 2000s (in inflation-adjusted dollars).

他还说，在公司看来，如果利用溶剂处理技术的话，即使油价在30美元至40美元一桶也很划算，这个价位接近1990年代和21世纪前几年的水平（扣除通货膨胀的因素后）。

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Organic solvent oil removal: use organic solvent cleared surface process of oil parts.

有机溶剂除油：利用有机溶剂清除制件表面油污的过程。

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The extraction and refining process includes distillating washing oil or anthracene oil to get fluorene distillate, then crystallizing the fluorene distillate to get fluorene using cooling or solvent.

芴的提取精制过程是先间歇蒸馏洗油馏份或蒽油馏份切取芴主馏份，再采用冷却结晶法或溶剂结晶法精制芴主馏份得到芴。

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