US594243A - Apparatus for supplying air to blast-furnaces and converters - Google Patents
Apparatus for supplying air to blast-furnaces and converters Download PDFInfo
- Publication number
- US594243A US594243A US594243DA US594243A US 594243 A US594243 A US 594243A US 594243D A US594243D A US 594243DA US 594243 A US594243 A US 594243A
- Authority
- US
- United States
- Prior art keywords
- air
- blast
- furnaces
- converters
- engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000007664 blowing Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 210000001503 Joints Anatomy 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
Definitions
- My invention has relation to an improvement in means for supplying air to blast-furnaces and steel-converters.
- air' supplied to the furnace or converter should be as dry as possible, for any moisture which is carried in by the blast is dissipated only at the expense of heat, and this of course is very wasteful.
- one grain of moisture per cubic foot of air represents the supplying of 5 twenty-five gallons of water per hour to the furnace or converter, and in the instance cited above if the air were taken by the blowing-engine from the engine-room, containing 8.9 grains of moisture per cubic foot, the engine would force into the furnace or converter with the air two hundred and twenty-two and one-half gallons of water per hour, while if the air were taken from outdoors, containing, as stated, 4.8 grains of moisture per cubic foot, only one hundred and ten gallons of water would be delivered. The derangement of the operation of the furnace caused by the excess of moisture in the case of air taken from the engine-room would be very considerable.
- the apparatus I have devised is constructed as shown in the drawing, and is as follows:
- the drawing shows an air-blowing engine, which may be of any suitable type.
- 2 is the air-cylinder; 3 3, the air-boxes.
- 4 4 are the air-inlet passages, and 5 5 the air-discharge passages which, through a blastpipe 6, lead to a converter or to a stove in which the air is heated before delivery to the blast-furnace.
- blowing-engines have been universally arranged to take their air immediately at the location of the engine in the engine-room, where they derive air containing a large percentage of moisture, by reason of the warmth of the air,
- I claim-- The combination with a blast-furnace or converter, of an air-blowing engine which supplies air thereto and is inolosed in a building, and a pipe or conduit leading from a point outside the building to the air-inlet of said engine, whereby the air delivered to the furnace or converter is taken from the external atmosphere; substantially as described.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
(No Model.)
J. GAYLEY. APPARATUS FOR SUPPLYING AIRTO BLAST FURNACES AND CONVERTERS.
N0.'594,243. Patented Nov 23,1897.
0110M)": r0 Iumurl VIITNESSIS A mvsmon www 1 UNITED STATES PATENT EFICE.
JAMES GAYLEY, OF PITTSBURG, PENNSYLVANIA.
APPARATUS FOR SUPPL YING AIR TO BLAST-FURNACES AND CONVERTERS.
SPECIFICATION forming part of Letters Patent N 0. 594,243, dated November 23, 1897. Application filed March 26, 1896. Serial No. 584,938. (No model.)
To aZZ whom it may concern: 7 Beitknown that I, JAMES GAYLEY, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Apparatus for Supplying Air to Blast-Furnaces and Converters, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this IO specification, which shows in side elevation,
partly in vertical section, apparatus constructed in accordance with my invention.
My invention has relation to an improvement in means for supplying air to blast-furnaces and steel-converters. In such metallurgical operations as the smelting of iron ore in blast-furnaces or the refining of steel in converters it is of utmost importance that the air' supplied to the furnace or converter should be as dry as possible, for any moisture which is carried in by the blast is dissipated only at the expense of heat, and this of course is very wasteful. Ihave discovered that a very material saving can be efiected in this regard by taking the air-supply for the blowing-engines not from the room in which the engines are stationed, as has been common practice heretofore, but from the outside of the building, for I have found by careful observation of hy- 3o grometers that the outside air is much dryer than the air within, which, because of higher temperature and of the escape of steam from joints of pipes, 850., will contain a considerable proportion of moisture. As an illustra- 3 5 tion of this, I will state that the average readings of hygrometers within the engine-room and in the external air for one month were as follows: inside engine-room, 8.9 grains of moisture per cubic foot of air; outdoors, 4.8 40 grains of moisture per cubic foot of air. This difference is very important, for with the amount of air usually supplied. per minute by blast-engines one grain of moisture per cubic foot of air represents the supplying of 5 twenty-five gallons of water per hour to the furnace or converter, and in the instance cited above if the air were taken by the blowing-engine from the engine-room, containing 8.9 grains of moisture per cubic foot, the engine would force into the furnace or converter with the air two hundred and twenty-two and one-half gallons of water per hour, while if the air were taken from outdoors, containing, as stated, 4.8 grains of moisture per cubic foot, only one hundred and ten gallons of water would be delivered. The derangement of the operation of the furnace caused by the excess of moisture in the case of air taken from the engine-room would be very considerable.
The apparatus I have devised is constructed as shown in the drawing, and is as follows:
The drawing shows an air-blowing engine, which may be of any suitable type.
2 is the air-cylinder; 3 3, the air-boxes.
4 4: are the air-inlet passages, and 5 5 the air-discharge passages which, through a blastpipe 6, lead to a converter or to a stove in which the air is heated before delivery to the blast-furnace.
7 represents the walls, and 8 the roof, of the engine-house.
Instead of arranging the openings of the air-inlet passage in the engine-room, as has been common practice heretofore, I connect said openings with the external air by a suitable supply pipe which preferably leads through the roof, as at 9, so as to draw the air from a level well above the ground; but it may lead horizontally through one of the walls, as at 10. It is desirable to make the pipe with as few bends as possible, so as to reduce the frictional resistance to the passage of the air. This and the direction in which the pipe extends to the exterior of the building are not, however, limiting features of my invention.
The advantages of my invention in respect of its simplicity and the improvement in the conduct of furnaces which it affords will be appreciated by those skilled in the art.
The fact that the air in the engine-room of blowing-engines is substantially more humid than air taken from the atmosphere outside the building and that there is any advantage to be derived from taking the air from outside was not known prior to my invention. Blowing-engines have been universally arranged to take their air immediately at the location of the engine in the engine-room, where they derive air containing a large percentage of moisture, by reason of the warmth of the air,
increased above that out of doors by contact with the steam-cylinder and compressed-air pipe, which facilitates the absorption of steam that escapes from the steam-pipes, very often in small and invisible jets, and also the moisture in the wheel-pits. An increase in the temperature of the atmosphere does not produce the same effect on the air outside as on that inside of the enginer00m, since this increase only causes the outside air to retain its units of moisture more tenaciously, while the inside air in addition absorbs through its increased capacity an increased amount of moisture which is supplied from the leaking of steam, and likewise when the temperature falls the inside air parts with less moisture, thus requiring an additional quantity of fuel to dissipate a large amount of moi sture,which my invention avoids.
I claim-- The combination with a blast-furnace or converter, of an air-blowing engine which supplies air thereto and is inolosed in a building, and a pipe or conduit leading from a point outside the building to the air-inlet of said engine, whereby the air delivered to the furnace or converter is taken from the external atmosphere; substantially as described.
In testimony whereof I have hereunto set my hand.
JAMES GAYLEY. Witnesses:
G. I. HOLDSHIP, H. M. OORWIN.
Publications (1)
Publication Number | Publication Date |
---|---|
US594243A true US594243A (en) | 1897-11-23 |
Family
ID=2662893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US594243D Expired - Lifetime US594243A (en) | Apparatus for supplying air to blast-furnaces and converters |
Country Status (1)
Country | Link |
---|---|
US (1) | US594243A (en) |
-
0
- US US594243D patent/US594243A/en not_active Expired - Lifetime
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US594243A (en) | Apparatus for supplying air to blast-furnaces and converters | |
US757221A (en) | Smelting-furnace. | |
GB1133923A (en) | Gas extraction system for open top shaft furnaces | |
US3460819A (en) | Gas draft apparatus | |
US971297A (en) | Art of treating air for use in metallurgical processes. | |
US1811459A (en) | Regenerative heating system | |
US1027781A (en) | Apparatus for supplying air to blast-furnaces, converters, and the like. | |
US3113765A (en) | Melting and refining furnace and method of operation | |
US303207A (en) | Blast-furnace plant for using gas | |
US285462A (en) | Territory | |
US935628A (en) | Method of operating blast-furnaces and converters. | |
US278279A (en) | Smelting-furnace | |
US771058A (en) | Method of extracting moisture from air for blast-furnaces or converters. | |
US3397877A (en) | Blast furnace automatic control apparatus | |
US756110A (en) | Method of extracting moisture from air for blast-furnaces and converters. | |
US1769362A (en) | Open-hearth furnace | |
US749502A (en) | teichgraeber | |
US555961A (en) | Furnace for smelting ores | |
US1112846A (en) | Cupola-furnace. | |
US2445743A (en) | Metallurgical apparatus | |
US633407A (en) | Kiln. | |
US398684A (en) | Smoke-consuming furnace and air-heater | |
US165084A (en) | Improvement in hot-blast apparatus | |
US385072A (en) | schlimme | |
US2335877A (en) | Furnace |