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This paper designs four cases to investigate the performances of the polygeneration processes, which depend on the commercially ready technology to convert coal to liquid fuels (CTL) and electricity with CO 2 sequestration. With Excel-Aspen Plus based models, mass and energy conversion are calculated in detail. The simulation shows that the thermal efficiency is down with the synfuels yield...
A systematic study was undertaken to investigate the effects of Al 2 O 3 /SiO 2 ratio on reduction, carburization and catalytic behavior of iron-based Fischer–Tropsch synthesis (FTS) catalysts promoted with potassium and copper. The catalysts were characterized by N 2 physical adsorption, CO 2 temperature-programmed desorption (TPD), H 2 temperature-programmed...
The kinetics of water gas shift (WGS) reaction over an Fe–Mn catalyst under Fischer–Tropsch synthesis (FTS) reaction conditions is studied in a spinning basket reactor. Experimental conditions are varied as follows: temperature of 533–573K, reactor pressure of 10.0–26.5bar, H 2 /CO feed ratio of 0.66–2.0 and space velocity of 0.66–2.65×10 −3 Nm 3 kg cat−1 s ...
The kinetics models of oxygenate formation in Fischer–Tropsch synthesis (FTS) over an industrial Fe–Mn catalyst are studied in a continuous spinning basket reactor. Detailed kinetics models on the basis of possible oxygenate formation mechanisms, namely adsorbed CO or CH 2 insertion mechanisms, are derived. The calculated alcohol and acid distributions in FTS reaction fit the experimental...
A precipitated iron catalyst containing sulfur for Fischer–Tropsch (F–T) synthesis was prepared by means of a novel method using a ferrous sulfate as precursor. Both fixed bed reactor (FBR) and continues stirred tank slurry reactor (STSR) were used to test long-term F–T reaction behaviors over the catalyst. A stability test (1600 h) in FBR showed that the catalyst was active even after 1500 h of time-on-stream...
The kinetic experiments of Fischer–Tropsch synthesis (FTS) over an industrial Fe–Cu–K catalyst are carried out in a micro-fixed-bed reactor under the conditions as follows: temperature of 493–542K, pressure of 10.9–30.9bar, H 2 /CO feed ratio of 0.98–2.99, and space velocity of 4000–10 000h −1 . The effects of secondary reactions of olefins are investigated by co-feeding C 2 ...
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