http://www.mineweb.net/energy/596887.htmLONDON (Mineweb.com) --Climate change is high on the programme for Davos this week and even George Bush has just announced his desire for a 20% cut in the consumption of gasoline. In China, China Shenhua Energy Co (CSEC) is setting the pace and looks like becoming the world leader in coal-to-liquids (CTL). It started developing its CTL programme at a pilot plant in Shanghai, which now has successfully achieved sustainable output of diesel oil and gasoline from a feed of 6 t/d of coal. This facility has allowed CSEC to become comfortable with the technology and to accumulate know-how on cost control and operations management.
CSEC subsidiary Shendong is currently developing the first commercial project in Inner Mongolia. Project construction was 50% complete at the beginning of 2007, with the coal liquefaction reactors (each weighing 2,250 t) successfully installed. Full production is expected by the end of this year, some 20,000 barrels per day of oil from coal. However, the plans go far beyond this one plant. CSEC plans to operate eight liquefaction plants by 2020. Together they will yield in excess of 30 million tons a year of CTL oil, which is estimated to be sufficient to replace over 10% of China’s projected oil imports.
These CTL plans are not only fascinating in their sheer size; they also involve very interesting technology. Up to now, all the world’s CTL has involved the Fischer-Tropsch (FT) process, which requires coal to be turned into synthetic gas, and then to be liquefied. CSEC is using a process developed by Friedrich Bergius, a decade before the FT process, which takes the coal directly to liquids.
It is certainly not unproven technology as it was well used in wartime Germany. The China Coal Research Institute in Beijing estimates that the Bergius process yields significantly more fuel from each tonne of coal. It expects the process to capture more than 55% of the coal’s energy, compared to just 45% for FT.
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