Bench-scale development of mild gasification char desulfurization. Technical report, 1 December 1993--28 February 1994
- Institute of Gas Technology, Chicago, IL (United States)
The goal of this project is to scale up a process, developed under a previous ICCI grant, for desulfurization of mild gasification char by treatment with hydrogen-rich process-derived fuel gas at 650--760 C and 7-15 atm. The char can be converted into a low-sulfur metallurgical form coke. In the prior study, IBC-105 coal with 4.0 wt % sulfur was converted to chars with less than 1.0 wt% sulfur was converted to chars with less than 1.0 wt % sulfur in a laboratory-scale batch reactor. The susceptibility of the char to desulfurization was correlated with physicochemical char properties and mild gasification conditions. Acid pretreatment of the coal prior to mild gasification was also shown to significantly enhance subsequent sulfur removal. In this study, IGT is conducting continuous bench-scale tests in a 1-lb/h fluidized-bed reactor to determine the preferred process conditions and obtain steady-state data necessary for process conditions and obtain steady-state data necessary for process design and scale-up. The desulfurized chars are to be used to produce low-sulfur form coke, which will be evaluated for density, reactivity, and strength properties relevant to utilization in blast furnaces. During the second quarter, the authors completed the acid pretreatment of 25 lb (11 kg) of the 40 x 80-mesh IBC-105 coal and 7 lb (3 kg) of carbonizer char. Modifications of the bench-scale fluidized-bed reactor were completed, permitting extended-duration char-producing runs with caking coal. Char-producing runs were initiated at 1100 F and 20 psig in nitrogen, and will continue into the third quarter.
- 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:
- FC22-92PC92521
- OSTI ID:
- 10158579
- Report Number(s):
- DOE/PC/92521-T130; ON: DE94012557; BR: AV0100000/AV0102000; TRN: AHC29412%%72
- Resource Relation:
- Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BITUMINOUS COAL
WASHING
PROGRESS REPORT
COAL PREPARATION
DEASHING
DESULFURIZATION
DEMINERALIZATION
TRACE AMOUNTS
PARTICLE SIZE
ARSENIC
BORON
CADMIUM
LEAD
MERCURY
MOLYBDENUM
SELENIUM
VANADIUM
CHROMIUM
NICKEL
COPPER
ZINC
FLUORINE
LITHIUM
SODIUM
STRONTIUM
BARIUM
MANGANESE
COBALT
GERMANIUM
CHLORINE
BROMINE
RADIUM
POLONIUM
RADON
THORIUM
URANIUM
EXPERIMENTAL DATA
010300
PREPARATION