Elemental and NMR characterization of tars from entrained-flow flash pyrolysis of coal

Conference · Mon Apr 01 00:00:00 EST 1985

OSTI ID:5592702

Sundaram, M S; Steinberg, M; Ramalingam, K R

A New Mexico sub-bituminous coal was flash pyrolyzed in an He atmosphere in an entrained downflow tubular reactor at temperatures from 700/sup 0/C to 1000/sup 0/C and at 50 psi. In addition to C/sub 1/-C/sub 2/ gases, CO and BTX, as high as 9.8% of the dry, ash-free coal was converted to tar at 700/sup 0/C. The tars were characterized via elemental analysis and /sup 1/H NMR spectroscopy. /sup 1/H NMR data show that the structural characteristics of the tars with respect to hydrogen type distribution depend on the severity of the reaction conditions. The non-aromatic hydrogen content of the tars decreased with increase in the pyrolysis temperature whereas the aromatic hydrogen content of the tars followed an opposite trend.

• Research Organization: Brookhaven National Lab., Upton, NY (USA); Michigan Univ., Ann Arbor (USA). Dept. of Medicinal Chemistry
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5592702
• Report Number(s): BNL-36407; CONF-850942-18; ON: DE85012275
• Resource Relation: Conference: 190. American Chemical Society national meeting, Chicago, IL, USA, 8 Sep 1985
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL TAR
CHEMICAL COMPOSITION
SUBBITUMINOUS COAL
PYROLYSIS
FLASH HEATING
NUCLEAR MAGNETIC RESONANCE
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HEATING
MAGNETIC RESONANCE
MATERIALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
RESONANCE
TAR
THERMOCHEMICAL PROCESSES
010406* - Coal & Coal Products- Pyrolysis & Cracking- (-1987)