Desulfurization of hot fuel gas produced from high-chlorine Illinois coals

Technical Report · Tue Jan 01 04:00:00 EST 1991

DOI:https://doi.org/10.2172/5795607· OSTI ID:5795607

O'Brien, W S

New coal gasification processes are now being developed which can generate electricity with high thermal efficiency either in a combined gas-turbine, steam-turbine cycle or in a fuel cell. Both of these coal-to-electricity pathways require that the coal-derived fuel gas be at a high temperature and be free of potential pollutants, such as sulfur compounds. Unfortunately, some high-sulfur Illinois coals also contain significant chlorine which converts into hydrogen chloride (HC1) in the coal-gas. This project investigates the effect of HC1, in concentrations typical of a gasifier fed by high-chlorine Illinois coals, on zinc-titanate sorbents that are currently being developed for H{sub 2}S and COS removal from hot coal-gas. This study is designed to identify any deleterious changes in the sorbent caused by the HC1, both in adsorptive operation and in the regeneration cycle, and will pave the way to modify the sorbent formulation or the process operating procedure to remove HC1 along with the H{sub 2}S and COS from the coal-gas. This will negate any harmful consequences of utilizing high-chlorine Illinois in these processes. The bench- scale fluidized bed has been modified to prevent potential HC1 corrosion and startup experiments have proven the reactor system operable and capable of yielding reliable experimental results. The first of the planned experiments in the project are now being performed. 1 fig.

• Research Organization: Southern Illinois Univ., Carbondale, IL (United States)
• Sponsoring Organization: DOE; ILDENR; USDOE, Washington, DC (United States); Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
• DOE Contract Number: FG22-91PC91334
• OSTI ID: 5795607
• Report Number(s): DOE/PC/91334-T1; ON: DE92007978
• 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
20 FOSSIL-FUELED POWER PLANTS
200102 -- Fossil-Fueled Power Plants-- Power Cycles
CARBON COMPOUNDS
CARBON OXYSULFIDE
CHALCOGENIDES
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
COAL GASIFICATION
COMBINED-CYCLE POWER PLANTS
DESULFURIZATION
DOCUMENT TYPES
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
HALOGEN COMPOUNDS
HOT GAS CLEANUP
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INORGANIC ACIDS
OXYGEN COMPOUNDS
POWER PLANTS
PROGRESS REPORT
PURIFICATION
REMOVAL
SORPTIVE PROPERTIES
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZINC COMPOUNDS