Water gas shift reaction in a catalytic bubbling fluidized bed reactor

• Published in: The Korean journal of chemical engineering Vol. 33; no. 12; pp. 3523 - 3528
• Main Authors: Lee, See Hoon, Park, Sang Tae, Lee, Roosse, Hwang, Jong Ha, Sohn, Jung Min
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-12-2016; Springer Nature B.V; 한국화학공학회
• Subjects: Biotechnology; Bubbling; Carbon dioxide; Carbon monoxide; Carbon sequestration; Catalysis; Catalysts; Chemistry; Chemistry and Materials Science; Fixed beds; Fluidized bed reactors; Fluidized beds; Hydrogen production; Industrial Chemistry; Industrial Chemistry/Chemical Engineering; Low temperature; Materials Science; Polymer; Shift reaction; Synthesis gas; Water gas; 화학공학; Fluidized Bed; CO Conversion; Hydrogen; Water Gas Shift; Catalyst
• ISSN: 0256-1115; 1975-7220
• DOI: 10.1007/s11814-016-0208-1

The water gas shift reaction in a catalytic bubbling fluidized bed reactor was investigated by using simulated syngas (40% H
2
, 40% CO and 20% CO
2
) for the pre-combustion CO
2
capture and hydrogen production application. A commercial low temperature shift (LTS) catalyst with particle sizes of 200-300 μm was used to investigate the promotion effect by exchanging the fixed bed reaction with the fluidized bed reactor. The effects of the reactor temperature (180-400 °C), space velocity (800-4,800 cm
3
/h·g), and steam/CO ratio (1.0-2.5) on the CO conversion and syngas composition were determined, and the highest CO conversion was 86.8% at 300 °C with the LTS catalyst at a space velocity of 800 cm
3
/h·g and steam/CO ratio of 2.5. The experiments exhibited an improvement in activity and a conversion reached that given by equilibrium at temperatures over 300 °C. Also, the performance was much improved than that when a fixed bed system was used.