Desulfurization of hot coal-gas in a high-pressure fluid-bed reactor

Conference · Mon Jan 01 04:00:00 EST 1990 · Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA)

OSTI ID:6798918

Gangwal, S K; Harkins, S M ^[1]; Jain, S C ^[2]

---

1. Research Triangle Institute, NC (USA)
2. Morgantown Energy Technology Center, WV (USA)

Zinc ferrite, a regenerable mixed-metal oxide, is a leading sorbent for removal of H{sub 2}S from hot coal-derived gas streams for integrated gasification combined cycle (IGCC) applications. Due to several potential advantages of fluid-bed operation, a high-temperature high-pressure bench-scale reactor was constructed and commissioned for testing in the fluid-bed mode. Zinc ferrite was tested at a superficial velocity to minimum fluidization velocity ratio of 3.0. Multicycle testing at 15 atm and 600{degree}C with 5,000 ppmv H{sub 2}S in the inlet simulated fluid-bed coal gasifier (KRW) gas showed that zinc ferrite consistently reduced the H{sub 2}s to under 20 ppmv, in a single-stage fluidized bed at a superficial residence time of {approximately}3 seconds. Prior to reaching a bed outlet H{sub 2}S concentration of 100 ppmv, a sulfur pickup of 12 g per 100 g sorbent was achieved.

• OSTI ID: 6798918
• Report Number(s): CONF-900402--
• Conference Information: Journal Name: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA) Journal Volume: 35:1
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
BENCH-SCALE EXPERIMENTS
CHEMICAL REACTIONS
COAL GAS
DATA
DATA ANALYSIS
DESULFURIZATION
DOCUMENT TYPES
EXPERIMENTAL DATA
FERRIMAGNETIC MATERIALS
FERRITES
FLUIDIZED BED REACTORS
FLUIDS
FUEL DISPERSION REACTORS
GASES
HIGH PRESSURE
HOMOGENEOUS REACTORS
INFORMATION
IRON COMPOUNDS
MAGNETIC MATERIALS
MATERIALS
MEASURING INSTRUMENTS
MEASURING METHODS
NUMERICAL DATA
OXYGEN COMPOUNDS
PROCEEDINGS
REACTORS
TRANSITION ELEMENT COMPOUNDS
ZINC COMPOUNDS