Coal gasification research studies. Technical progress report, January 20-February 19, 1984

Technical Report · Mon Apr 30 04:00:00 EDT 1984

OSTI ID:6808988

The Coal Gasification Research Studies consist of three tasks: (1) Studies of Coal Ash Behavior; (2) High-Pressure Fluidization Studies; and (3) High Temperature Fluidization Studies. This month gasification runs were made in the 2-inch diameter unit at 1800/sup 0/F using 5% oxygen feed. Runs were made at steam/oxygen concentrations of 2/1 and 4/1 and reactor charges of 50g and 150g of char. Samples of Kentucky No. 9 and No. 11 coals were received and are being analyzed. Parts for the needle alignment assembly of the viscometer were received and installed. In the high-pressure fluidization studies, analysis of the test data to study the bubble characteristics was completed this month. These data were obtained using a -35+50 mesh sand in the 15-inch-diameter fluidization column at fluidizing gas velocities of 0.3, 0.36, 0.42, 0.48, and 0.54 ft/s and at various positions in the bed. Three additional tests were also conducted using -35+50 mesh sand under the same conditions as those in the earlier tests. The purpose of these tests was to check the reproducibility of the earlier test data. The results indicate that the data are indeed reproducible. Two tests were conducted in the high-temperature fluidization studies with -35+50 mesh Ottawa sand in the 6-inch-diameter Plexiglas column. The column was equipped with 12 pressure probes (4 sets of 3) and a 6-orifice gas distributor with an orifice diameter of 1/8 inch. The objective of these tests was to determine bubble charateristics at ambient temperature. Data were obtained at operating velocities of 1.5 and 1.8 times the minimum fluidization velocity, V/sub mf/, and a scanning speed of 400 scans/s. The data from these tests are being analyzed for bubble frequency, velocity and pierced lengths. 6 figures.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• DOE Contract Number: AC21-82MC19301
• OSTI ID: 6808988
• Report Number(s): DOE/MC/19301-T9; ON: DE84014805
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
ASHES
BUBBLES
CHARS
CHEMICAL COMPOSITION
COAL GASIFICATION
DATA
EXPERIMENTAL DATA
FLUIDIZATION
FLUIDIZED BED
GASIFICATION
INFORMATION
NUMERICAL DATA
PRESSURE EFFECTS
PYROLYSIS PRODUCTS
RESEARCH PROGRAMS
RESIDUES
TEMPERATURE EFFECTS
TEST FACILITIES
THERMOCHEMICAL PROCESSES