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, Bradley
Contributor Ventura, Brian and Scarborough, David
Date 2013-09-25
Spatial Coverage Kauai, Hawaii
Subject AFRC 2013 Industrial Combustion Symposium
Description Paper from the AFRC 2013 conference titled Autoignition Characteristics of Silane-Oxygen-Diluent Mixtures in a Practical Burner by Brian Ochs
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.
Type Event
Format application/pdf
Rights No copyright issues
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ARK ark:/87278/s61c4v2c
Setname uu_afrc
Date Created 2014-10-14
Date Modified 2014-10-14
ID 14359
Reference URL https://collections.lib.utah.edu/ark:/87278/s61c4v2c
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