Supercritical Fuel Pyrolysis
Abstract
Supercritical pyrolysis experiments were conducted with the two-ring model fuel 1-methylnaphthalene at 585 C and pressures of 50 to 110 atm and at 80 atm and temperatures of 550 to 600 C. Quantification of the product polycyclic aromatic hydrocarbons (PAH) by high-pressure liquid chromatography (HPLC) showed linear increases in PAH yields with increasing pressure; with increasing temperature, rates of PAH yield increases rose steadily. Higher-temperature supercritical pyrolysis experiments with toluene showed that 700 C, the highest temperature of the reactor, was not hot enough to break aromatic C-C bonds in the supercritical fuel pyrolysis environment. Supercritical pyrolysis experiments were conducted with the model alkane fuel n-decane at 570 C and pressures of 40 to 100 atm and at 100 atm and temperatures of 530 to 570 C. Application of a newly developed normal-phase HPLC fractionation / reversed-phase HPLC analysis technique led to the identification of 276 individual product PAH of up to 9 aromatic rings many of which were first-time identifications as products of n-decane. Quantification of the PAH products showed exponential increases in PAH yields with increasing pressure or increasing temperature. Yields increased the most sharply for the highest-ring-number PAH, immediate precursors to carbonaceous solids.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 30, 2010
- Accession Number
- ADA564573
Entities
People
- M. J. Wornat
Organizations
- Louisiana State University