Development of a hot gas cleanup system for integrated coal gasification/molten carbonate fuel cell power plants. Topical report, October 1982-December 1983

Technical Report · Fri Jun 01 04:00:00 EDT 1984

OSTI ID:6845231

Anderson, G L; Berry, F O; Gross, M N

This report summarizes the results of recent laboratory-scale studies conducted by IGT in support of (1) the development of the IGT mixed metal-oxide process for high temperature fuel gas desulfurization and (2) the development of a high capacity, mass producible sorbent for the removal of HC1 from high-temperature coal gases. The IGT mixed metal-oxide process is a conceptual process that removes sulfur-containing compounds from coal-derived fuel gases by contact with a multi-component reactive mixture of metal oxide sorbents. The objective of the process is to maximize the percentage of elemental sulfur formed during regeneration of the mixture with air and to minimize the formation of SO/sub 2/. The metal oxide sorbents tested included a cobalt oxide-silica, manganous oxide, iron oxide/chromia, iron oxide/silica, cobalt titanate, and zinc oxide. Based on the tests, the cobalt titanate, zinc oxide, and cobalt oxide/silica sorbents have been selected for further testing in a bench-scale unit. The HC1 removal sorbent being developed by IGT is based on the use of a reactive moltent mixture of either lithium and sodium carbonates or lithium and potassium carbonates contained within an inert, porous ceramic matrix. The sorbent is prepared by a technique developed by IGT for the production of a similar media used for high temperature thermal energy storage. The results of the present study indicate that this preparation procedure is viable and results in a highly reactive, high capacity sorbent for HC1 removal. Mass produced pellets containing 60 vol % of a molten alkali carbonate mixture (52 mol % Li/sub 2/CO/sub 3//48 mol % Na/sub 2/CO/sub 3/) and 40 vol % MgO were found to be able to reduce the HC1 content of a gas containing 99% CO/sub 2/, 3000 ppM H/sub 2/O and 400 ppM HC1 to about 0.75 ppM HC1 at a space velocity of 1000 h/sup -1/, 600/sup 0/C and atmospheric pressure. 11 references, 29 figures, 47 tables.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• DOE Contract Number: AC21-82MC19403
• OSTI ID: 6845231
• Report Number(s): DOE/MC/19403-1544; ON: DE84003083
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
010404 -- Coal
Lignite
& Peat-- Gasification
30 DIRECT ENERGY CONVERSION
300503 -- Fuel Cells-- Materials
Components
& Auxiliaries
ADSORBENTS
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COAL GASIFICATION
COBALT COMPOUNDS
COBALT OXIDES
COMPARATIVE EVALUATIONS
DATA
DESULFURIZATION
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
FUEL CELLS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
HIGH-TEMPERATURE FUEL CELLS
HOT GAS CLEANUP
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INFORMATION
INORGANIC ACIDS
IRON COMPOUNDS
IRON OXIDES
LITHIUM CARBONATES
LITHIUM COMPOUNDS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MANGANESE COMPOUNDS
MANGANESE OXIDES
MINERALS
MOLTEN CARBONATE FUEL CELLS
MOLTEN SALTS
NONMETALS
NUMERICAL DATA
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PURIFICATION
RECOVERY
REGENERATION
REMOVAL
RESEARCH PROGRAMS
SALTS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SODIUM CARBONATES
SODIUM COMPOUNDS
SORPTIVE PROPERTIES
SULFIDES
SULFUR
SULFUR COMPOUNDS
SURFACE PROPERTIES
SYNTHESIS
THERMOCHEMICAL PROCESSES
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZINC COMPOUNDS
ZINC OXIDES