Non-catalytic oxidation of gases with low heat content

K.G.P. Sulzmann and J.M. Kline

Energy, 1978, vol. 3, issue 5, 607-613

Abstract: Overall fuel burning rates, heat-release rates, induction times, specific burning times and specific reduced burning volumes have been determined as functions of the preheating temperature (Tp) for fuel/air mixtures involving low energy-content off-gases which are typical for in situ shale-oil retorting. Two fuels with compositions (in mole fractions) of 0.0413CH4 + 0.0443H2 + 0.0630CO + 0.0067NH3 + 0.0016H2S + 0.3130CO2 + 0.5301N2 (fuelairequivalence ratio Φ = 0.25) and of 0.0950CH4 + 0.0700H2 + 0.1500CO + 0.2950CO2 + 0.3900N2 (Φ = 0.5) were considered, together with an energy-equivalent methane fuel for the second fuel of 0.1690CH4 + 0.2950CO2 + 0.5360N2 with Φ = 0.5. Induction and overall, post-induction oxidation rates were obtained spectrophotometrically behind reflected shock-waves. The data were used to determine the specific burning times and burning volumes required for the homogeneous, premixed burning of off-gases in heaters and utility boilers. The results indicate that reasonable sizes for boilers and heaters are possible for low energy-content fuel/air mixtures containing hydrogen, even for preheating temperatures as low as 900–1000 °K. Replacement of actual, hydrogen-containing fuels by heat-equivalent methane mixtures results in vastly exaaggerated estimates for the necessary induction times and the achievable specific burning volumes.

Date: 1978
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:3:y:1978:i:5:p:607-613

DOI: 10.1016/0360-5442(78)90076-2

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