pa1778data.pdf

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U.S. STEEL DUQUESKE WORKS
HAER NO. PA-115
(Page 109)
blowdown rates were kept as close to zero as possible. 9
The combustion air and delivery system at the Duquesne blast
furnace plant began as a relatively simple operation. Early
additions and changes to the system were primarily aimed at
increasing production and efficiency. These changes centered on
the introduction and subsequent improvements of the plant's wet
gas cleaning systems, the improvement of its cold blast
production and delivery equipment, and improvements in hot blast
stove construction. Beginning with the addition of the
ferromanganese gas cleaning plant in 1953 and running through the
installation of the various water treatment facilities, however,
innovations to the system were increasingly driven by government
imposed environmental protection policies rather than by
traditional productivity concerns. During the five years
preceding the shutdown of the blast furnace plant in 1984,
millions of dollars were spent to change the combustion air and
delivery system as a result of this latter category.
ENDNOTES:
l."The Duquesne Furnaces of the Carnegie Steel Co., Ltd.,"
The Iron Trade Review 30 (March 25, 1897): 9-10; "The Duquesne
Furnace Plant of the Carnegie Steel Company, Limited," The Iron
Age 59 (March 25, 1897): 9-11; Carnegie Steel Company, "General
Arrangement of Blowing Engine House for 40" x 78" x 76" x 66"
Engines, Drawing #1341, July 31, 1895"; "Operation of Blast
Furnace Gas Engines," The Iron Age 88 (July 6, 1911): 36; and
Carnegie Steel Company, "Equalizing Pipe for Furnaces No. 1 & No.
2: Drawing #1511, June 5, 1896."
2.A. N. Diehl, "The Blast Furnace Regenerative Stove," The
Iron Age 89 (March 7, 1912): 580; "Operation of Blast Furnace Gas
Engines," The Iron Age 88 (July 6, 1911): 36-8; A. N. Diehl,
"Data Pertaining to Gas Cleaning at the Duquesne Blast Furnaces,"
Transactions of the American Institute of Mining Engineers 50
(1914): 3-46; J. M. Camp and C. B. Francis, The Making, Shaping
and Treating of Steel. Fourth Edition, (Pittsburgh, 1925), 175-
179; A. N. Diehl, "How to Clean Blast Furnace Gas," The Iron
Trade Review 54 (March 26, 1914): 590-593; "Keeping Your Furnace
Gas Clean," The Iron Trade Review 54 (March 12, 1914): 516-518;
J. E. Johnson Jr., Blast Furnace Construction in America, (New
York, 1917), 306-27; Carnegie Steel Company, "Duquesne Works:
Plant Description Book," (Duquesne, 1925), 42, 43; and Carnegie
Steel Company, "General Arrangement of Piping for Gas Cleaning
Plant: Drawing #6220, September 24, 1907."
3.L. E. Liddle, "Effect of Moisture Additions to the Air
Delivered to Blast Furnaces," Blast Furnace and Steel Plant 3 3