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Title	Oxygen Enriched Combustion System Utilizing Membrane
Creator	Watabe, M.
Publisher	Digitized by J. Willard Marriott Library, University of Utah
Date	1985
Spatial Coverage	presented at Livermore, California
Abstract	It is well known that considerable energy consumption can be saved when the air of higher oxygen concentration than the normal air is used for combustion. To date, a method whereby the liquefied oxygen or PSA type oxygen is diluted, is used to obtain oxygen enriched air. But, I would like to inform the oxygen enriched combustion system utilizing membrane as well as our investigations on its applicability. We started studies of this system since 1978 and succeeded to put it to practical use, though the scale of the system is not so large. Our presentation will also cover a report on examples of such studies. Oxygen enriched air feeding device is constructed very simply with a membrane and suction blower. This system is easy to operate and very safety. The membrane is made of stable high-molecular silicon and the co-efficient of separation is approximately 2. The suction blower is a highly efficient turbo type blower, which is developed a new and has a maximum capacity of 3000 Nm3/H. We conducted various laboratory tests and field tests, and now I report actual data on application to glass melting furnace and cupola. From these tests, we know that economic oxygen concentration is 22 to 26% in consideration of the manufacturing cost of oxygen enriched air and the energy saving effect. This system will be available for high temperature furnaces such as ceramic firing furnace, rolling mill furnace, forging furnace and sludge melting kiln in addition to glass melting furnace and cupola. I am going to report economical condition of this system too, for example, the cost of oxygen enriched air, membrane cost and life time of membrane.
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/s6sq92x7
Setname	uu_afrc
ID	2387
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6sq92x7

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Title	Page 10
Format	application/pdf
OCR Text	Show ing efficiency is improved. Fig. 7 shows the relationship between oxygen concentration in combustion air and adiabatic flame temperature. As the oxygen concentration becomes high, the flame temperature increases. At that time, the degree of temperature increase becomes milder as the oxygen concentration is intensified. Consequently, when oxygen enriched air is used for combustion, it is not necessary to enrich the air excessively; it is efficient to use oxygen enriched air with oxygen concentration of 23 ^ 25%. o u Q) U •P (ti U Q) I1 Q) U. m = l^ m=l .2 m=1.5 1 ' i Town Gas : 13A Air Ratio: m - .. 2,400 2,200 2,000 1,800 1,600 1,400 21 23 25 27 29 31 33 Oxygen Concentration in Combustion Air (%) Fig. 7 THEORETICAL ADIABATIC FLAME TEMPERATURE OF COMBUSTION AIR Our tests proved that air with oxygen concentration of up to approx. 25% can be used for normal burners. From this point of view, it is reasonable to use 23 ^ 25% oxygen enriched air. - 9 ~
Setname	uu_afrc
ID	2366
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6sq92x7/2366