US443865A - Limekiln - Google Patents

Description

(No Model.)

C. D. PAGE.

LIMEKILN'.

No. 443,865. l Patented Dec. 30, 1890.

we mams ramas co., mmmmm., maman-mn, n. c.

Il'NrrED VSTATES PATENT OFFICE.

CLARK D. PAGE, OF ROCHESTER, NEV YORK.

LIIVIEKILN.

SPECIFICATION forming part of Letters Patent No. 443,865, dated December 30, 1890.

Application filed .Tune 30, 1890. Serial No. 357,272. (No model.)

To all whom t may concern:

Be it known that I, CLARK D. PAGE, of the city of Rochester, county of Monroe, and State of New York, have invented certain new and useful Improvementsin Limekilns; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the letters of reference marked thereon.

My present invention relates to limekilns, and has for its object to improve their construction and operation, consisting in certain novelties of construction and combinations of parts, all as will be hereinafter fully described, and the novel features pointed out in the claims at-the end of this specification.

In the accompanying drawings, Figure 1 is a vertical section of a kiln constructed in accordance with my invention; Fig. 2, a horizontal section on the line x @c of Fig. l; Fig. 3, a vertical section on the line y y of Fig. 2; Fig. 4, a horizontal sectional view on the line .e z of Fig. l.

Similar letters of reference in the several figures indicate similar parts.

The walls A A of the present limekiln are constructed of masonry in the ordinary manner, and the interior of the cupola is provided with a lining C of fire-brick, as usual. The cupola is made, preferably, of slightly-tapering form, being largest at the furnaces, which latter in the present construction are two in number, (indicated by D 1),) arranged on opposite sides and tapering toward the outside. The inner ends of the furnaces are provided with centrally-disposed triangular or wedgeshaped columns or abutments E of fire-brick. The furnaces are preferably formed with grate-openings e in their bottoms, communieating with the ash-pit E; but I propose in my present construction to use a spray of some suitable hydrocarbon instead of coal, and therefore prefer to close this grate-opening with a valve or door E, capable of being opened, when desired, to permit any accumulation of lime in the furnace or combustionchamber to drop into the ash-pit, from whence it may be removed, when desired, by closing door E', thus preventing an undue quantity of air reaching the furnaceduring the operation. If desired to dispense with the atomd izer or spraying devices, the usual grate could be placed in the opening e and solid fuel used in the furnaces.

The cupola just below the furnaces is divided into four sections by walls F', supported on arches strong enough to support the charge of lime and unburned stone in the kiln, and the upper sides of these walls are provided with coping-blocks G and G', of firebrick or other refractory material, connected at the center by a large conical block H, of refractory material, having in its sides recesses, into which the ends of t-he copingblocks enter and by which they are held in place. The two blocks G, arranged at right angles lto the furnaces, are preferably higher than the others, extending, preferably, above the centers of the furnaces and constituting a partition, preventing theproducts from passing from one furnace to the other, and also, in connection with the central cone H, forming a solid support for the lime and stone and permitting the flame from the furnace to reach farther in and under it. This bridging and supporting are particularly due to the central cone, which I regard'as a very advantageous feature.

Below the furnaces the cupola is enlarged, as at J, to form acooling and receiving chamber or draw-pit, it being contracted again at the bottom and provided with a partition-Wall J', which serves to support to some extent the burned and cooled lime and render the removal casier.

IVhile the kiln, so far described, is adapted for the use of any kind of fuel, I prefer to employ ahyd rocarbon-burner of any approved kind and to atomize or spray it into the combustionchamber by a steam-atomizer. In the drawings, the letter K designates a suitable atomizer arranged within each of the furnaces adapted to project a burning spray of oil and steam mixed with a suitable quantity of air to support combustion against the Wedge-shaped abutments E, which will cause it to divide and entering the cupola burn the fuel and limestone therein contained, the copings G and G preventing the flames from one entering the other furnace and directing them upward. -v

The boiler L for generating the steam operating the atomizers or machinery, if de.

IOO

sii-ed, I prefer to locate Within the cupola below the furnaces, as shown, and in such position that While it will not be subjected to the Weight of the contents ot the kiln it will be subjected te the action ot the White-hot lime belouT the furnaces and supportiIig-arches, and thus the heat given oi't while the lime is cooling will be utilized. This manner of loeating the boiler in position to be heated by the lime coming from the hottest part of the kiln effects a saving` in fuel and is a vast improvement over locating it Where a portion of the direct heat from the furnaces is taken to heat the boiler. As the boiler extends transverselythrough the cupola, I prefer to extend the steam-pipes m m :from opposite ends thereof to the respective atomizers, though any other arrangen'ient could as well be had-as, for instance, if agreater number ot' furnaces or atomizers are employed the Water is supplied to the boiler through pipe n and the oil to the atomizers by pipe o.

Suitable apertures p are provided opening into the cupola for the insertion oi bars or pokers with which to knock the aecumulations of lime from the arches or boiler and to bring the lime down should there be a tendency to bridge.

The manner of charging and burning kilns of this class is so well understood by those skilled in the art that no `further description is deemed necessary.

l. In a lirncliiln, the con'ibination, with the cupola, of a combustion-chamber having a wedge-shaped abutment in its discharge cud and a hydrocarbon atomizer discharging against the edgeof said abutment, substantially as described.

2. In a limeliiln, the combination, with the cupola, of a combustionchamber having a hydrocarbon-atomizer therein, a dischargeopening in its lower side, and a door or Valve for closing said aperture, adapted to be opened when desired, substantially as described.

3. In a limekiln, the combination, with the cupola and the furnaces at the sides thereof, of a steam-boiler within the cupola, located belen7 said furnaces an d heated by the burned lime, liydrocarbon-atomizers located in the furnaces and discharging laterally iu the cupola, and connections between the boiler and atomizers tor conveying steam to the latter, substantially as described.

et. In a limekiln, the eombinatioinwith the cupola, ofthe furnaces, the division-Walls having coping-blocks G G', the former being the higher and arranged at an angle to the furnace-opening, and the central conc 1I of refractory material, extending above the furnace-opening, substantially as described.

5. In a limelriln, the combination,with the cupola and furnace, ot' a transverse division wall or arch extending below the furnace, and a steam-boiler extending transversely of the cupola beneath the arch, substantially as dcscribed.

CLARK l). PAGE.

Witnesses:

FRED F. (li-inscri', II. L. Osooon.

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