Expansion of high-temperature; high-pressure data set for coal gasification. Fifth quarterly report, September 28-December 28, 1985

Technical Report · Tue Jan 01 04:00:00 EST 1985

OSTI ID:7127068

Solomon, P R; Serio, M A; Hamblen, D G; Heninger, S G

During the fifth quarter, the gas mixing station for the high pressure reactor (HPR) system was completed. This station allows us to make reproducible binary mixtures of any two gases. It will be used for pyrolysis experiments in helium/nitrogen or oxygen/nitrogen and gasification experiments in helium/nitrogen or oxygen/nitrogen and gasification experiments in carbon dioxide/nitrogen. In addition, work began on modifications of the HPR system for high pressure (600 psig) operation. A limited amount of data was taken with the HPR system due to the modifications for the mixing station. However, the test plan experiments for pyrolysis in mixtures of helium and nitrogen were completed. In general, there is a slightly higher yield of volatiles and lower yield of char as the helium content (heating rate) increases. A new technique for measuring char reactivity resulted from an Army SBIR program and was further developed under our other METC Contract. It has also been used to characterize chars generated under the current program. It was evident that the severity of the thermal treatment had a direct effect on char reactivity. In this regard, rapid heating to a relatively low temperature was most favorable while slow heating to a high temperature was least favorable. With regard to pressure effects on reactivity, our preliminary data indicated that higher pressures produce chars lower initial reactivity. A total of four experiments were done in the heated tube reactor (HTR) at 60 psig, 800/sup 0/C maximum tube temperature. The trends are the same as observed in the atmospheric pressure experiments for the same tube temperature and cold gas velocity. During the past quarter, a particle temperature (PT) model was under development for the high pressure entrained flow reactor (HPR). 5 refs., 5 figs.

• Research Organization: Advanced Fuel Research, Inc., East Hartford, CT (USA)
• DOE Contract Number: AC21-84MC21004
• OSTI ID: 7127068
• Report Number(s): DOE/MC/21004-T4; ON: DE86010427
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
010409 -- Coal
Lignite
& Peat-- Pyrolysis & Carbonization-- (1987-)
BINARY MIXTURES
BITUMINOUS COAL
BLACK COAL
BROWN COAL
CARBONACEOUS MATERIALS
CHARS
CHEMICAL PROPERTIES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL
COAL GASIFICATION
DATA
DECOMPOSITION
DIAGNOSTIC TECHNIQUES
DISPERSIONS
ELEMENTS
ENERGY SOURCES
ENTRAINMENT
EXPERIMENTAL DATA
FLUIDS
FOSSIL FUELS
FUELS
GASES
GASIFICATION
HEATING RATE
HELIUM
INFORMATION
KINETICS
LIGNITE
MATERIALS
MEDIUM PRESSURE
MIXTURES
NITROGEN
NONMETALS
NUMERICAL DATA
PRESSURE EFFECTS
PYROLYSIS
PYROLYSIS PRODUCTS
RARE GASES
REACTION KINETICS
RESEARCH PROGRAMS
SUBBITUMINOUS COAL
THERMOCHEMICAL PROCESSES
VERY HIGH TEMPERATURE