Desulfurization of hot fuel gas produced from high-chlorine Illinois coals. Technical report, March 1, 1992--May 31, 1992
- Southern Illinois Univ., Carbondale, IL (United States)
- Research Triangle Inst., Durham, NC (United States)
New coal gasification processes are now being developed which can generate electricity with high thermal efficiency either in an integrated gasification combined cycle (IGCC) or in a fuel cell (MCFC). Both of these new 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 (HCl) in the coal-gas. This project investigates the effect of HCl, 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 HCI, both in absorptive operation and in the regeneration cycle, and will pave the way to modify the sorbent formulation or the process operating procedure to remove HCl along with the H{sub 2}S and COS from hot coal gas. This will negate any harmful consequences of utilizing high-chlorine Illinois coal in these processes. The work activity during the third quarter of this project involved the performance of the second block-set of experiments in the bench-scale fluidized-bed reactor. These experiments were designed to study the effect of HCl in the desulfurization of a low-Btu fuel gas. Nine single-cycle experiments were performed, at operating temperature of 538, 650, and 750{degrees}C, with HCl concentrations of 0, 200, and 800 ppMv. The presence of HCl in the coal gas significantly enhanced the desulfurization efficacy of the sorbent. A 10-cycle sulfidation-regeneration sequence is currently being performed at 650{degrees}C with 800 ppMv HCl in the simulated fuel gas to determine any adverse effects on the sorbent structure or its desulfurization capability.
- Research Organization:
- Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
- DOE Contract Number:
- FG22-91PC91334
- OSTI ID:
- 10185608
- Report Number(s):
- DOE/PC/91334-T102; ON: DE93000940
- Resource Relation:
- Other Information: PBD: [1992]
- Country of Publication:
- United States
- Language:
- English
Similar Records
Desulfurization of hot fuel gas produced from high-chlorine Illinois coals. Technical report, December 1, 1991--February 29, 1992
Desulfurization of hot fuel gas produced from high-chlorine Illinois coals. Final technical report, September 1, 1991--August 31, 1992
Related Subjects
COAL GASIFICATION
HOT GAS CLEANUP
FUEL GAS
DESULFURIZATION
HYDROGEN SULFIDES
REMOVAL
CARBON OXYSULFIDE
ZINC COMPOUNDS
SORPTIVE PROPERTIES
TITANATES
PROGRESS REPORT
FLUIDIZED BEDS
HYDROCHLORIC ACID
TEMPERATURE RANGE 0400-1000 K
EXPERIMENTAL DATA
U-GAS PROCESS
010402
PURIFICATION AND UPGRADING