Desulfurization of hot fuel gas produced from high-chlorine Illinois coals. Final technical report, September 1, 1991--August 31, 1992
- Southern Illinois Univ., Carbondale, IL (United States)
- Research Triangle Inst., Research Triangle Park, NC (United States)
In this project, simulated gasifier-product streams were contacted with the zinc titanate desulfurization sorbent in a bench-scale atmospheric fluidized-bed reactor at temperatures ranging from 538 to 750 {degree}C (1000 to 1382 {degree}F). The first set of experiments involved treating a medium-Btu fuel gas (simulating that of a ``Texaco`` oxygen-blown, entrained-bed gasifier) containing 1.4 percent H{sub 2}S and HCl concentrations of 0, 200, and 1500 ppmv. The second experimental set evaluated hot-gas desulfurization of a low-Btu fuel gas (simulating the product of the ``U-Gas`` air-blown gasifier), with HCl concentrations of 0, 200, and 800 ppmv. These operating conditions were typical of the gas-treatment requirements of gasifiers fueled by Illinois basin coals containing up to 0.6 percent chlorine. The results of the experiments at 538 and 650 {degree}C at all the HCl concentrations revealed no deleterious effects on the capability of the sorbent to remove H{sub 2}S from the fuel gas mixtures. In most cases, the presence of the HCl significantly enhanced the desulfurization reaction rate. Some zinc loss, however, was encountered in certain situations at 750 {degree}C when low-steam operating conditions were present. Also of interest, a portion of the incoming HCl was removed from the gas stream and was retained permanently by the sorbent. This behavior was examined in more detail in a limited set of experiments aimed at identifying ways to modify the sorbents composition so that the sorbent could act as a simultaneous desulfurization and dechlorination agent in the hot-gas cleanup process.
- 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:
- 10117820
- Report Number(s):
- DOE/PC/91334-T125; ON: DE94005726; BR: AV0100000
- 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, March 1, 1992--May 31, 1992
Catalytic Ammonia Decomposition for Coal-Derived Fuel Gases
Related Subjects
COAL GASIFICATION
COAL GAS
DESULFURIZATION
ILLINOIS
COAL DEPOSITS
SULFUR CONTENT
COAL
CHLORIDES
TEXACO GASIFICATION PROCESS
U-GAS PROCESS
HYDROGEN SULFIDES
REMOVAL
HYDROCHLORIC ACID
EXPERIMENTAL DATA
PROGRESS REPORT
ZINC COMPOUNDS
TITANATES
HOT GAS CLEANUP
010404
010402
GASIFICATION
PURIFICATION AND UPGRADING