Coal gasification research studies. Project 61063 quarterly report, May 20-August 19, 1983

Technical Report · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5115324

The Coal Gasification Research Studies program consists of three tasks: (1) coal ash behavior studies, (2) high-pressure fluidization studies, and (3) high-temperature fluidization studies. During this quarter, seven gasification runs were made in the 2-inch fluidized-bed gasifier at 1800/sup 0/F using gas mixtures of both high (5%) and low (0.2%) oxygen content. The carbon conversion of these runs ranged from 35% to 98%. Although corrosion products from the reactor walls presented problems in analysis, the reactor residue showed that iron silicates were formed in the high-oxygen runs, but very few were produced when a low-oxygen content gas was used. In the high-pressure fluidization studies, tests at ambient conditions in a 12-inch-diameter column with a multi-orifice distributor showed that the pressure probe signal was not clean due to the large number of bubbles produced by this type of distributor. Using five- and seven-nozzle distributors gave a much cleaner signal from the pressure probes. It was also found that a substantial number of the bubbles do not rise vertically, but move at an angle through the column. A new pressure probe configuration was designed to account for these bubbles. The test results indicate, however, that a much higher scanning rate will be needed to correctly measure their velocities. In the high-temperature fluidization studies, the modification of the existing unit continued. The preheater furnace was cleaned and repiped, and a computer room to maintain the proper temperature and humidity for the data acquisition hardware was constructed. 8 figures, 1 table.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• DOE Contract Number: AC21-82MC19301
• OSTI ID: 5115324
• Report Number(s): DOE/MC/19301-4; ON: DE84010398
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
AGGLOMERATION
ASHES
BUBBLES
CHARS
CHEMICAL COMPOSITION
CHEMICAL REACTORS
COAL GASIFICATION
DATA
DIAGRAMS
ELEMENTS
EXPERIMENTAL DATA
FLOWSHEETS
FLUIDIZATION
FLUIDIZED BED
GASIFICATION
INFORMATION
MELTING
NONMETALS
NUMERICAL DATA
OXYGEN
PHASE TRANSFORMATIONS
PRESSURE EFFECTS
PYROLYSIS PRODUCTS
RESEARCH PROGRAMS
RESIDUES
TEMPERATURE EFFECTS
TEST FACILITIES
THERMOCHEMICAL PROCESSES
VELOCITY
VERY HIGH TEMPERATURE