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Title	Incineration Behavior of Waste Liquid with Methane-Air Combustion in Triple Coaxial Tube Incinerator and Emissions of Exhaust Gas
Creator	Ohyashiki, Takuya; Itaya, Yoshinori; Matsuda, Hitoki; Hasatani, Masanobu
Publisher	Digitized by J. Willard Marriott Library, University of Utah
Date	1998
Spatial Coverage	presented at Maui, Hawaii
Abstract	The disposal, volume reduction, solidification, drying and incineration of industrial liquid waste have become common practice. In this work, the performance of the triple coaxial tube incinerator is studied. In the incinerator, waste liquids are atomized on the center line of the riser in parallel to the upward stream of methane air mixture so that evaporation and pyrolysis of the droplets take place successively in the flame. A solution of water-ethanol-ammonium sulfate is used as model waste liquid. The experiments are performed to examine the flammability limit, the NOx emission by the thermal NOx and the oxidization behavior of nitrogen compounds in the liquid when internally circulating particles are introduced in the riser. Applicability of the selective non-catalytic NOx reduction (SNCR) using urea as reductant agent was investigated as well. The enlargement of the flammable region and the low NOx emission are realized by the contribution of the circulating particles. It is also recognized that the temperature in the gas stream at the urea injection position is important factor for the SNCR.
Type	Text
Format	application/pdf
Language	eng
Rights	This material may be protected by copyright. Permission required for use in any form. For further information please contact the American Flame Research Committee.
Conversion Specifications	Original scanned with Canon EOS-1Ds Mark II, 16.7 megapixel digital camera and saved as 400 ppi uncompressed TIFF, 16 bit depth.
Scanning Technician	Cliodhna Davis
ARK	ark:/87278/s6sb48bd
Setname	uu_afrc
ID	11142
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6sb48bd

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Title	Page 8
Format	application/pdf
OCR Text	Show The incineration behavior of ethanol-ammonium sulfate solution with methane-air combustion in triple coaxial tube incinerator was studied experimentally, and the following brief results were obtained: 1 Appropriate amount of circulating particles expands the stable combustion region. This is desirable characteristics from the viewpoint of saving of auxiliary fuel. 2. The particle circulation favorably contributes to the uniformity of the temperature distribution and the reduction of the N O x formed from nitrogen compounds in the atomized liquid. 3. Premixing of urea into the model waste liquid increases N O emission, while urea solution injection into the combustion gas stream is effective for N O reduction. 4. It is most positive for the S N C R if the urea solution is injected in the combustion gas stream where the temperature is in the range of 1120-1420 K.
Setname	uu_afrc
ID	11134
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6sb48bd/11134