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Title: Dilute Oxygen Combustion Phase 3 Final Report

Abstract

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 of furnace zones to DOC burners, which will lower furnacemore » 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.« less

Authors:
;
Publication Date:
Research Org.:
Praxair, Inc.
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
876700
Report Number(s):
DOE/ID/13331-3
TRN: US200712%%196
DOE Contract Number:  
FC36-95ID13331
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 03 NATURAL GAS; BURNERS; CAPACITY; COMBUSTION; FLUE GAS; FURNACES; MAINTENANCE; NITROGEN; OXIDES; OXYGEN; PERFORMANCE; PRODUCTION; STEELS; oxy-fuel combustion; dilute oxygen; low NOx; DOC burner; dilute oxygen combustion; Steel heating; steel reheating

Citation Formats

Riley, M.F., and Ryan, H.M. Dilute Oxygen Combustion Phase 3 Final Report. United States: N. p., 2000. Web. doi:10.2172/876700.
Riley, M.F., & Ryan, H.M. Dilute Oxygen Combustion Phase 3 Final Report. United States. doi:10.2172/876700.
Riley, M.F., and Ryan, H.M. Wed . "Dilute Oxygen Combustion Phase 3 Final Report". United States. doi:10.2172/876700. https://www.osti.gov/servlets/purl/876700.
@article{osti_876700,
title = {Dilute Oxygen Combustion Phase 3 Final Report},
author = {Riley, M.F. and Ryan, H.M.},
abstractNote = {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 of 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.},
doi = {10.2172/876700},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {5}
}