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A high-temperature F-T process demonstrated in China

By Paul Grad |

Synfuels China Technology Co. (Beijing; www.synfuelschina.com.cn) says it has developed a high-temperature slurry Fischer-Tropsch (F-T) process (flowsheet) that produces mainly clean diesel, naphtha and liquefied petroleum gas (LPG) products, with unique features including: high productivity of proprietary catalyst; efficient recovery of reaction heat by producing 2.5–3.0-MPa(g) steam, which can be used to generate electricity; a uniform temperature distribution in the slurry bed; and easy integration with different synthesis-gas- (syngas) production technologies. To design the F-T catalyst, the company first used quantum chemistry to calculate the molecular energy levels of different crystal faces, and then achieved the desired catalyst structure by strictly controlling the preparation conditions. This approach resulted in high productivity of the catalyst. The company’s technology has been successfully applied in the Yitai 160,000-ton/yr, and the Luan 160,000-ton/yr demonstration coal-to-liquids (CTL) plants, located at Ordos City in the Inner Mongolia Autonomous Region. Features of the Yitai plant include: a uniform temperature distribution across the 5.3-m slurry-bed reactor; the ability to easily separate…
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