科技报告详细信息
Dilute Oxygen Combustion - Phase 3 Report
Riley, Michael F.
Praxair, Inc.
关键词: Steel Reheat Furnace;    Energy Efficiency;    32 Energy Conservation, Consumption, And Utilization Energy Efficiency;    Oxygen Enriched Combustion;    Energy Reduction;   
DOI  :  10.2172/805679
RP-ID  :  DOE/ID/13331
RP-ID  :  FC07-95ID13331
RP-ID  :  805679
美国|英语
来源: UNT Digital Library
PDF
【 摘 要 】

Dilute Oxygen Combustion (DOC) burners have been successfully installed and operated in the reheat furnace at Auburn Steel Co., Inc., Auburn, NY, under Phase 3 of the Dilute Oxygen Combustion project. Two new preheat zones were created employing a total of eight 6.5 MMBtu/hr capacity burners. The preheat zones provide a 30 percent increase in maximum furnace production rate, from 75 tph to 100 tph. The fuel rate is essentially unchanged, with the fuel savings expected from oxy-fuel combustion being offset by higher flue gas temperatures. When allowance is made for the high nitrogen level and high gas phase temperature in the furnace, measured NOx emissions are in line with laboratory data on DOC burners developed in Phase 1 of the project. Burner performance has been good, and there have been no operating or maintenance problems. The DOC system continues to be used as part of Auburn Steel's standard reheat furnace practice. High gas phase temperature is a result of the high firing density needed to achieve high production rates, and little opportunity exists for improvement in that area. However, fuel and NOx performance can be improved by further conversion on furnace zones to DOC burners, which will lower furnace nitrogen levels. Major obstacles are cost and concern about increased formation of oxide scale on the steel. Oxide scale formation may be enhanced by exposure of the steel to higher concentrations of oxidizing gas components (primarily products of combustion) in the higher temperature zones of the furnace. Phase 4 of the DOC project will examine the rate of oxide scale formation in these higher temperature zones and develop countermeasures that will allow DOC burners to be used successfully in these furnace zones.

【 预 览 】
附件列表
Files Size Format View
805679.pdf 638KB PDF download
  文献评价指标  
  下载次数:14次 浏览次数:24次