Development of a hot-gas desulfurization system for IGCC applications

Conference · Thu Dec 31 00:00:00 EST 1992

OSTI ID:10161250

Gupta, R; McMichael, W J; Gangwal, S K ^[1]; Jain, S C; Dorchak, T P ^[2]

---

1. Research Triangle Inst., Research Triangle Park, NC (United States)
2. USDOE Morgantown Energy Technology Center, WV (United States)

Integrated gasification combined cycle (IGCC) power plants are being advanced worldwide to produce electricity from coal because of their superior environmental performance, economics, and efficiency in comparison to conventional coal-based power plants. One key component of an advanced IGCC power plant is a hot-gas desulfurization system employing regenerable sorbents. To carry out hot-gas desulfurization in a fluidized-bed reactor, it is necessary that the sorbents have high attrition resistance, while still maintaining high chemical reactivity and sulfur absorption capacity. Also, efficient processes are needed for the treatment of SO{sub 2}-containing regeneration off-gas to produce environmentally benign waste or useful byproducts. A series of durable zinc titanate sorbents were formulated and tested in a bench-scale fluidized-bed reactor system. Reactive sorbents were developed with addition resistance comparable to fluid-bed cracking (FCC) catalysts used in petroleum refineries. In addition, progress continues on the development of the Direct Sulfur Recovery Process (DSRP) for converting SO{sub 2} in the regeneration off-gas to elemental sulfur. Plans are under way to test these bench-scale systems at gasifier sites with coal gas. This paper describes the status and future plans for the demonstration of these technologies.

• Research Organization: USDOE Morgantown Energy Technology Center, WV (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• OSTI ID: 10161250
• Report Number(s): DOE/METC/C-93/7074; CONF-921104-13; ON: DE93014042; NC: NONE
• Resource Relation: Conference: American Institute of Chemical Engineers annual meeting,Miami, FL (United States),1-6 Nov 1992; Other Information: PBD: [1992]
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
COMBINED-CYCLE POWER PLANTS
EFFICIENCY
COAL GASIFICATION
FUEL GAS
HOT GAS CLEANUP
DESULFURIZATION
HYDROGEN SULFIDES
REMOVAL
ZINC COMPOUNDS
TITANATES
FLUIDIZED BEDS
SULFUR
MATERIALS RECOVERY
010404
010402
200102
GASIFICATION
PURIFICATION AND UPGRADING
POWER CYCLES