US164402A - Improvement in furnaces - Google Patents
Improvement in furnaces Download PDFInfo
- Publication number
- US164402A US164402A US164402DA US164402A US 164402 A US164402 A US 164402A US 164402D A US164402D A US 164402DA US 164402 A US164402 A US 164402A
- Authority
- US
- United States
- Prior art keywords
- chamber
- combustion
- air
- coking
- furnace
- 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
- 239000000571 coke Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 18
- 238000002485 combustion reaction Methods 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 239000003245 coal Substances 0.000 description 12
- 150000002430 hydrocarbons Chemical class 0.000 description 12
- 239000004215 Carbon black (E152) Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000002452 interceptive Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
- 230000000630 rising Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B90/00—Combustion methods not related to a particular type of apparatus
- F23B90/04—Combustion methods not related to a particular type of apparatus including secondary combustion
- F23B90/06—Combustion methods not related to a particular type of apparatus including secondary combustion the primary combustion being a gasification or pyrolysis in a reductive atmosphere
Definitions
- my aim is to so construct and operate the furnace that the hydrocarbons shall be driven from the coal in a compartment of the furnace devoted to this purpose, and at the same time mingled with a proper quantity of air, and led by the draft into another compartment devoted to the combustion of the coke, in which compartment the explosive mixture of hydrocarbons and air meet with the required degree of heat to cause their ignition and combustion.
- Figure l is a front view of my improved furnace; Fig. 2, a vertical longitudinal section upon the line as w of Fig. 1; Fig. 3, a transverse vertical section of the furnace upon the line 3 y of Fig. 2.
- H H, &c. represent the doors for stoking, regulating, 850., there being one to each cokin gchamber, one to each combustionchamber, and one to each ash-pit. They should be provided (the four upper ones) with regulable apertures h for the admission of air, if desired.
- the bottom of the boiler forms the roof of the coking-chambers. This enables me to dispense with a separate covering. It also enables me to utilize the heat rising from the coking-chambers, and at the same time protects the boiler at this point from the intenser heat of combustion-chamber with its combined fire of coke and gas, the heat of which is more gradually diffused to the boiler after passing the bridge-wall.
- the double furnace consisting of the combustion-chambers D D, above which are the open-mouthed coking-chambers E E, in combination with the central air-chamber F, which admits air into both coking-chambers at or near the rear thereof, and which airchamber receives air by a regulable opening, f, substantially as specified.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Coke Industry (AREA)
Description
H'. M. SMITH.
Furnace.
N0 i64,402, Patented lunel5,l875.
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MA am THE GRAPHIC COJHOTO HIM-39 8L4 ARK PLAGEJLY.
UNITED STATES HORATIO M. SMITH, OF CHICAGO, ILLINOIS, ASSIGNOR OF TWO-THIRDS HIS RIGHT TO MOSES W. LESTER AND FRANKLIN LESTER, OF SAME PLACE.
IMPROVEMENT IN FURNACES.
Specification forming part of Letters Patent No- E6 L l02, dated June 15, 1875; application filed January 18, 1875.
GAsn A.
\ of destructive distillation immediately takes place, evolving hydrocarbon gases, and leavin g a residue of coke, which remains upon the bars and is thoroughly consumed. There is no difficulty in dealing with this coke, as it will remain upon the bars in a solid state until a final and complete combustion takes place, evolving onlya useless productrcarbonic acid. The loss and difficulty is met with in dealing with the volatile combustible-the hydrocarbon gases which have been evolved previous to the formation of the coke. These gases require for their production a much less degree of heat than What I should term furnace heat,
or that heat at which, if united with their proper proportion of oxygen, they will burn. Hence, a large proportion of this volatile fuel ordinarily passes otf unconsumed along with the products of combustion, producing a dense black smoke, whereas the true products of combustion-carbonic acid and steam-should be invisible.
In this invention my aim is to so construct and operate the furnace that the hydrocarbons shall be driven from the coal in a compartment of the furnace devoted to this purpose, and at the same time mingled with a proper quantity of air, and led by the draft into another compartment devoted to the combustion of the coke, in which compartment the explosive mixture of hydrocarbons and air meet with the required degree of heat to cause their ignition and combustion.
In the present improved furnace, I place above the grate-bars a coking-chamber, differing from a retort in this respect, that provision is made for admitting the atmosphere into it to mingle with the gases. A fire of coke is built upon the bars below this chamber, and
the chamber above is charged with coal, which, when reduced to coke, is raked down upon the bars, and a fresh supply of coal takes its place.
In the accompanying drawing, which forms a part of this specification, Figure l is a front view of my improved furnace; Fig. 2, a vertical longitudinal section upon the line as w of Fig. 1; Fig. 3, a transverse vertical section of the furnace upon the line 3 y of Fig. 2.
Like letters of reference indicate like parts in all the figures.
In said drawing, Arepresents a steam-boiler B, the grate-bars; U, the bridge-wall; D D, the ,combustion-chambers-in the present instance two in number, because the furnace is made double to insure a more perfect regulation of the temperature and combustion. E E are the coking-chambers, extending above the combustion-chambers from the bridgewall toward the front, and nearly to the front wall of the furnace. An air-chamber, F, separates the double furnaces and cokingchambers, and receives air through the regulable opening fin the front wall of the furnace, and delivers it into the coking-chambers through apertures f. G Gr are the ash-pits. H H, &c., represent the doors for stoking, regulating, 850., there being one to each cokin gchamber, one to each combustionchamber, and one to each ash-pit. They should be provided (the four upper ones) with regulable apertures h for the admission of air, if desired.
The operation of my improved furnace is as follows: Suppose a fire of coke to exist upon the grate-bars, and the coking-chamber to be stoked full of coal. The heat from the combustion-chamber will evolve the gases from the coalin the coking-chamber, which, mingled with air from the aperture f, will pass down through the opening J into the combustionchamber in a condition to ignite when the proper temperature is reached, which ignition takes place within the combustion-chamber, wherebythecombustionofboththecokeandthe hydrocarbons is insured, and there onlyescapes through the smoke-stack the useless products of a perfect combustion. When the coal in the coking-chamber is thoroughly coked, and contains no more gas, it is raked down upon the bars to supply the place of the coke which has been consumed-thereon.
In the drawing the air-currents are represented by plain arrows, the currents of hydrocarbon gases by arrows'with an open circle upon the shaft, while the currents of products of combustion are indicated by arrows with a black disk upon the shaft.
It Will be seen that this construction and arrangement of a combustion-chamber over which is placed an open-mouthed coking-chamber, into which air is admitted at or near the rear, forms a very convenient and perfect furnace for operating this principle. The coal is easily placed in the coking-chamber, and is easily transferred by its gravity into the combustion-chamber through the opening J, while the gases mingled with air pass freely, and without opportunity to cool, directly into-the combustion-chamber.
The advantage of placing the air-chamber F between the double furnaces is partly in the fact that the air is thereby warmed by both furnaces before entering the coking-chambers, and partly in thefact that it is extremely inconvenient in most cases, owing to the construction of furnaces generally to introduce the air at another point without interfering with the draft; although it is obvious that the chief result aimed atnamely, the admixture of air with the contents of the coking-chamber-could be accomplished otherwise than by the central air-chamber.
It will be seen that the bottom of the boiler forms the roof of the coking-chambers. This enables me to dispense with a separate covering. It also enables me to utilize the heat rising from the coking-chambers, and at the same time protects the boiler at this point from the intenser heat of combustion-chamber with its combined fire of coke and gas, the heat of which is more gradually diffused to the boiler after passing the bridge-wall.
It is well understood that boilers commonly burn out more rapidly at the front end than low, as specified.
2. The double furnace, consisting of the combustion-chambers D D, above which are the open-mouthed coking-chambers E E, in combination with the central air-chamber F, which admits air into both coking-chambers at or near the rear thereof, and which airchamber receives air by a regulable opening, f, substantially as specified.
HORATIO M. SMITH.
Witnesses:
JOHN W. MUNDAY, Enw. S. EVARTS.
Publications (1)
Publication Number | Publication Date |
---|---|
US164402A true US164402A (en) | 1875-06-15 |
Family
ID=2233811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US164402D Expired - Lifetime US164402A (en) | Improvement in furnaces |
Country Status (1)
Country | Link |
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US (1) | US164402A (en) |
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0
- US US164402D patent/US164402A/en not_active Expired - Lifetime
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