Mild gasification of Usibelli coal in an inclined fluidized-bed reactor

Technical Report · Fri Feb 01 04:00:00 EST 1991

DOI:https://doi.org/10.2172/10106405· OSTI ID:10106405

Merriam, N W; Thomas, K P; Cha, C Y

Results of mild gasification tests of minus 16-mesh Usibelli coal in an inclined fluidized-bed reactor are described in this report. The minus 16-mesh fraction was separated from the coal by screening. The coal was dried to zero moisture content, and about 2 wt % of the volatiles was removed as gas by partial decarboxylation using a 100-lb/hr inclined fluidized-bed dryer. The dried coal was subjected to mild gasification at maximum temperatures of 1050 to 1250{degrees}F (566 to 677{degrees}C) and feed rates of 7.5 lb/hr while using a once-through flow of carbon dioxide as fluidizing gas in a 1-inch-wide, inclined fluidized-bed reactor. Mild gasification of the dried coal resulted in production of 44 to 56 wt % of the dried coal as char, 10 to 13 wt % as liquids, 17 to 28 wt % as gas, and 8 to 21 wt % as fines. The yield of moisture- and ash-free (MAF) liquids varied from 11.4 to 14.2 wt % of the dried coal feed. Chemical analysis was carried out on these products.

• Research Organization: Western Research Inst., Laramie, WY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FC21-86MC11076
• OSTI ID: 10106405
• Report Number(s): DOE/MC/11076--3017; ON: DE91002097
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404
ALKANES
ALKENES
AROMATICS
CALORIFIC VALUE
CARBON DIOXIDE
CHARS
COAL
COAL FINES
COAL GASIFICATION
COAL LIQUIDS
DISTILLATION
DRYING
FLUIDIZED-BED COMBUSTORS
GASIFICATION
GRINDING
HYDROCARBONS
NITROGEN
OXYGEN
QUANTITATIVE CHEMICAL ANALYSIS
QUINOLINES
SCREENING
SULFUR
SYNTHESIS GAS
TOLUENE
VOLATILE MATTER