Catalytic coal conversion support: use of laser flash-pyrolysis for structural analysis. Progress report, January 1-March 31, 1981

Technical Report · Thu Oct 01 04:00:00 EDT 1981

OSTI ID:5752421

Bennett, G A; Rofer-DePoorter, C K; Verzino, Jr, W J; Hermes, R E; Gritzo, L F

The apparatus for on-line sampling of gases generated during processing of coal with catalysts was checked out with coal processed without catalysts. Gases monitored by gas chromatography are N/sub 2/, O/sub 2/, H/sub 2/, CH/sub 4/, CO, CO/sub 2/, C/sub 2/H/sub 4/, and C/sub 2/H/sub 6/. Most of the gaseous products are liberated in the first hour of processing. Condensates are also collected for later analysis by GC/MS. Reproducibility of the method is being improved. A method is being developed to compare pyrograms quantitatively. Coals and chars are pyrolyzed for 1.0 s at a laser power of 20 W, with the spot focussed to 2.5 mm as standard conditions. The total abundances of about forty compounds are then tabulated and subjected to a statistical analysis of variance. The compounds include alkanes, alkenes, aromatics, and sulfur, oxygen, and nitrogen compounds. The statistical analysis is now being performed for untreated Fruitland coal, Fruitland coal treated with CO/sub 2/ at 400/sup 0/C and the catalysts NaHCO/sub 3/, Na/sub 2/CO/sub 3/, and K/sub 2/CO/sub 3/. Extensive transient heat transfer analysis was performed to model the laser pyrolysis event.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5752421
• Report Number(s): LA-9034-PR; ON: DE82004180
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404 -- Coal
Lignite
& Peat-- Gasification
010406* -- Coal & Coal Products-- Pyrolysis & Cracking-- (-1987)
CARBONACEOUS MATERIALS
CATALYSTS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL
COAL GAS
COAL GASIFICATION
COAL LIQUIDS
DECOMPOSITION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GAS CHROMATOGRAPHY
GASES
GASIFICATION
LASERS
LIQUIDS
MASS SPECTROSCOPY
MATERIALS
PYROLYSIS
SAMPLING
SEPARATION PROCESSES
SPECTROSCOPY
THERMOCHEMICAL PROCESSES