Hydrous pyrolysis of four Argonne Premium coals

Conference · Sun Nov 01 04:00:00 EST 1992

OSTI ID:10181694

Serio, M A; Kroo, E; Charpenay, S; Solomon, P R

Pretreatment experiments were done under hydrous pyrolysis conditions with four Argonne Premium coals (Zap lignite, Wyodak subbituminous, Illinois bituminous, Pittsburgh bituminous) over a range of temperatures (250--350{degrees}C) and pressures (1000 - 4000 psig). The residues from these experiments were further studied by programmed pyrolysis in a TG-FTIR system. The yields of pyrolysis tar were found to increase sharply at short pretreatment times (< 60 min at 350{degrees}C) and decline slowly at longer times. The yields of pyrolysis methane increase monotonically with pretreatment time, while the yields of pyrolysis CO{sub 2} decline monotonically. All of these trends are in agreement with the contention that hydrous pyrolysis is similar to an accelerated geological aging of the coal. The results for CO evolution were somewhat contrary in that there was usually an initial increase followed by a decline. It is believed that this CO results from decomposition of hydroxy and dihydroxy structures which are created by the hydrous pyrolysis process.

• Research Organization: Advanced Fuel Research, Inc., East Hartford, CT (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-89PC89878
• OSTI ID: 10181694
• Report Number(s): CONF-920815--9; ON: DE93000704
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010409
BITUMINOUS COAL
CARBON MONOXIDE
COAL
COAL TAR
FOURIER TRANSFORMATION
HEAT TREATMENTS
INFRARED SPECTRA
LIGNITE
METHANE
PYROLYSIS
PYROLYSIS AND CARBONIZATION
SUBBITUMINOUS COAL
THERMAL GRAVIMETRIC ANALYSIS
YIELDS