Direct iron ore reduction by methane in a fluidized bed. Second annual report, November 1990-November 1991
The partial oxidation and steam reforming of methane was studied in both fixed- and fluidized-bed reactors (both bench-scale). In the absence of iron particles, both pathways were found to produce a mixture of CO and H2 in a proportion consistent with equilibrium calculations at temperatures above 1050 C. When iron oxide particles were added, however, virtually no H2 was detected while the proportion of CO2 and CO depended strongly on the amount of water in the feed stream. Preliminary studies using reduced iron particles indicate that Fe/FeO is an active dissociation catalyst for methane. Finally, a fluidized reactor model has been shown to accurately describe both gas-phase and catalytic reactions in a fluidized bed. In this regard, new theory is presented which can explain the peculiar shape of the axial concentration profile in a fluidized bed as measured by in-bed sampling.
- Research Organization:
- Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Dept. of Chemical Engineering
- OSTI ID:
- 5591906
- Report Number(s):
- PB-92-164417/XAB; CNN: GRI-5089-260-1905
- Resource Relation:
- Other Information: See also first annual report, PB91-178780. Sponsored by Gas Research Inst., Chicago, IL
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
HYDROGEN PRODUCTION
STEAM REFORMER PROCESSES
CHEMICAL REACTION KINETICS
CARBON DIOXIDE
CARBON MONOXIDE
CATALYTIC EFFECTS
CHEMICAL ANALYSIS
DISSOCIATION
FLUIDIZED BEDS
IRON
IRON OXIDES
MATHEMATICAL MODELS
METHANE
OXIDATION
PACKED BEDS
ALKANES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
HYDROCARBONS
IRON COMPOUNDS
KINETICS
METALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
REFORMER PROCESSES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
080108* - Hydrogen- Production- Steam-Iron Process
030300 - Natural Gas- Drilling
Production
& Processing