Autoignition Characteristics of Silane-Oxygen-Diluent Mixtures in a Practical Burner

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Title Autoignition Characteristics of Silane-Oxygen-Diluent Mixtures in a Practical Burner
Creator Ochs, B.
Contributor Ventura, B., Scarborough, D.
Date 2015-09-11
Spatial Coverage Salt Lake City, Utah
Subject 2015 AFRC Industrial Combustion Symposium
Description Paper from the AFRC 2015 conference titled Autoignition Characteristics of Silane-Oxygen-Diluent Mixtures in a Practical Burner
Abstract Silane is a pyrophoric gas commonly used in semiconductor manufacturing and has also been considered as a fuel additive to improve flame stabilization in scramjet engines. In certain circumstances, ignition of non-premixed combustion systems by conventional means such as spark or torch ignition is impractical. For such systems, small amounts of silane can be mixed with the fuel to initiate combustion upon contact with the oxidizer. The amount of silane required to initiate combustion depends on the oxidizer, primary fuel type, and burner geometry. It is well-known that practical ignition limits often differ significantly from those established by fundamental ignition and flammability limit studies due to the complexities of the fluid mechanics and fuel-oxidizer injection and mixing arrangements. In the current study, the concentration of silane in fuel required to achieve ignition was investigated using a practical, non-premixed, oxy-methane, swirled-stabilized burner. The effects of fuel and oxidizer injection timing, flow rates, injector configuration, silane gas temperature (273-325 K), and combustion system geometry were investigated. In each case the minimum silane concentration in methane necessary for prompt, repeatable ignition was recorded. The role of methane as a diluent in low-temperature Silane autoignition for a methane-oxygen combustion system was explored.
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Format application/pdf
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ARK ark:/87278/s67t1zqb
Setname uu_afrc
Date Created 2018-11-29
Date Modified 2018-11-29
ID 1387819
Reference URL https://collections.lib.utah.edu/ark:/87278/s67t1zqb