Oxygen carrier development for chemical looping combustion of coal derived synthesis gas

Conference · Fri Sep 01 04:00:00 EDT 2006

OSTI ID:938558

Siriwardane, R V; Chaudhari, K; Zinn, A N; Simonyi, T; Robinson, Clark; Poston, J A

In the present work, NETL researchers have studied chemical looping combustion (CLC) with an oxygen carrier NiO/bentonite (60 wt.% NiO) for the IGCC systems utilizing simulated synthesis gas. Multi cycle CLC was conducted with NiO/Bentonite in TGA at atmospheric pressure and in a high pressure reactor in a temperature range between 700-900°C. Global reaction rates of reduction and oxidation as a function of conversion were calculated for all oxidation-reduction cycles utilizing the TGA data. The effect of particle size of the oxygen carrier on CLC was studied for the size between 20-200 mesh. The multi cycle CLC tests conducted in a high pressure packed bed flow reactor indicated constant total production of CO2 from fuel gas at 800°C and 900°C and full consumption of hydrogen during the reaction.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR
• Sponsoring Organization: USDOE - Office of Fossil Energy (FE)
• OSTI ID: 938558
• Report Number(s): DOE/NETL-IR-2006-155; NETL-TPR-1508
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
08 HYDROGEN
ATMOSPHERIC PRESSURE
COAL
COMBUSTION
FIELD TESTS
FUEL GAS
GASIFICATION
HYDROGEN
LINERS
OXIDATION
OXYGEN
PACKED BEDS
PARTICLE SIZE
PHOSPHATES
POWER PLANTS
PRODUCTION
REACTION KINETICS
REFRACTORIES
SERVICE LIFE
SYNTHESIS GAS