US732097A

US732097A - Coking-kiln.

Info

Publication number: US732097A
Application number: US12829102A
Authority: US
Inventors: Caspar W Mettler; Adolf Mettler; Jacob Mettler
Original assignee: FREDERICK C ROCKWELL
Current assignee: FREDERICK C ROCKWELL
Priority date: 1902-10-22
Filing date: 1902-10-22
Publication date: 1903-06-30
Anticipated expiration: 1920-06-30

Description

No. 732,097. PATENTED JUNE 30,1903. 0. W., A. J. METTLER.

GOKING KILN.

APPLICATION mm) 001'. 22, 1902.

; fi Z m H0 MODEL a *fi Zak-221m Nd. 732,097. PATENTED JUNE 30, 1903.

' G. W., A. & J. METTLER.

GOKING KILN.

APPLIUATION TILED 00122, 1902.

MW I M P V// A 4 SHEETS-SHEET 3.

m RN PATBNTED JUNE 30, 1903. G. W., A. & J. METTLBR.

GOKING KILN.

APPLICATION rILnn 001222, 1902.

4 SHEETS-SHEET 4.

30 MODEL.

WW E MJN 6 N 8 mqw r J m m i I l i 0 %W[ MN /m a N m a Z R k m wN 5 FE n \w a. Mr NW -Q MWN N m M n Z N ,w aw v/wmo UNITED STATES PATENT Patented June 30, 1903.

OFFICE.

CASPAR W. METTLER, ADOLF METTLER, AND JACOB METTLER, OF NEW HAVEN, CONNECTICUT, ASSIGNORS \VEST HARTFORD, CONNECTICUT.

COKING TO FREDERICK C. ROCKWELL, OF

SPECIFICATION forming part of Letters Patent No. 732,097, dated was 80, 1903.

Application filed October 22, 1902.

To otZZ whom it may concern.-

Be it known that we, CASPAR W. METTLER, ADOLF METTLER, and JACOB METTLER, citizens of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Coking-Kilns, of which the following is a specification.

This invention relates to a kiln which is particularly adapted for coking peat, but is also applicable for other uses.

The object of the invention is to provide a comparatively simple kiln and holder for the material to be coked which is easy to operate and which will produce very hard and desirable fuel without danger of destroying or injuring the product by overheat.

The kiln that is illustrated has two long low coking-chambers, each having the necessaryfurnaces, fines, and dampers, and a track for the peat-holders which have lattice sides and ends, dumping grate-bottoms, and closefitting hoods that are only open at the bottom below the grates.

Figure 1 of the views shows a longitudinal vertical section of a kiln that embodies the invention with three holders on the track in the coking-chamber. Fig. 2 shows a horizontal section of the same. Fig. 3 shows a transverse vertical section of the kiln on larger scale, taken on the plane indicated by the dotted line x of Fig. 2. Fig. 4 shows a longitudinal vertical section of one end of the kiln, taken on the plane indicated by the broken line m of Fig. 3. Fig. 5 shows a plan of a holder with the bottom grates partly open. Fig. 6 shows a transverse Verticalsection of a holder, taken on the plane indicated on the broken line 0; of Fig. 5. Fig. 7 shows a perspective view of a piece of fuel that is coked in this kiln.

The kiln shown is built of brick with two long low chambers 1, separated by a brick partition. The ends of these chambers are closed by iron doors 2. Two furnaces 3 extend transversely beneath both chambers near one end of the kiln. The furnaces have common grates 4, ash-doors 5, and fuel-doors 6 at each side of the kiln. Flues 7 in the side Walls and fines 8 in the center wall of the kiln lead Serial No. 128,291. (No model.)

from 'the fire-box of each furnace to the top of the kiln. These fines open to'the tops and bottoms of the coking-chambers. Dampers 9 with operating-handles 10 are arranged to control these openings. A fine 11 is arranged longitudinally at the bottom of each coking chamber. Openings 12 are made from the coking-chambers to these flues, and dampers 13 with handles '14 are arranged to control these openings. These smoke-flues extend out from under one end of the kiln and enter a flue 15, that opens into a tank 16 at the bottom of stack 17. When the furnaces are first fired up, the dampers at the lower openings from the tines into the coking-chambers and the dampers at the openings into the smokefiues at the bottoms are opened wide, so as to obtain the full effect of the draft. After the fire is started the lower flue-openings are closed and the upper flue-openings are opened, so that the heated products of combustion will enter the coking-chambers at the top and pass down and out at the bottom, the openings to the smoke-fines at the bottom being out down to properly regulate the draft.

Along the floor of each coking-chamber is a track formed of rails 18. The peat-holders are supported on wheels 19, that fit the tracks. The sides and. ends of these peat-holders are built of interwoven strips of iron 20. Inside of this lattice frame is a lining of wire-netting 21. The bottom of each holder is formed of sections of grating 22. These'grate-sections are preferably hinged at their outer edges to the side frames 23 of the holder. A shaft 24. is arranged longitudinally of the center of each holder, and chains 25, connected with the inner edges of the grate-sections, are wound upon the shaft. The shaft is provided with a crank 26 and a ratchet and pawl 27, so that the grate-sections may be easily opened downwardly to dump the material after it has been coked. Over the wheels and axles an inclined flooring 28 is arranged, and around the bottom edges of theinside of the holders are inclined moldboards 29 to chute the material that has been coked into grate -sections are A coupling-hook 30 is of the frame of the the openings when the opened for dumping. attached to each end holder. One of the hooks preferably has a downturned arm 31, adapted to strike a sill 32 of the door, so as to raise and disengage the hook from the hook on the following holder as it leaves the kiln. Over each holder is a sheet-iron hood 33, that fits closely to the frame and extends downward almost to the level of the track. These hoods are only open at the bottom and are so made that there is but little space between the lattice work sides and ends of the holder and the walls of the hood. The hoods are removed and the compressed peat, in the form of hollow cylinders 34:, is loaded into the holders in any desired manner. When the holders are loaded full, the hoods are replaced and the holders coupled together and drawn or pushed into the coking-chambers of the kiln. Once in place in the kiln the doors are closed and sealed for a few hours, so that the material will be subjected to an action of the heated products of combustion from the furnaces, which enters at the top of the kiln and passes out at the bottom. The holders are preferably filled one at a time and are advanced intermittently through the chambers-that is, as fast as the coking of material in one holder is completed that holder is drawn out and another pushed in at the other end. A holder with material that has been su fficiently coked when removed is run along the track into a depression, as shown on the right in Fig. 1. This depression contains water deeper than the distance from the lower edges of the hood to the track, so as to seal the hood and prevent the escape of any gases from the interior. The holder remains in this place until the fuel is cold. It is then rolled out of the water to any suitable place and the coked material dumped out through the bottom.

The temperature of the material in the holders in this kiln is gradually raised to the coking-point, for the holders when first entering the kiln are at a considerable distance from the furnace. peat when it is heated do not escape, for the hood is only open at the bottom and only the heavy vapors and moisture which settle pass out at the bottom into the smoke-fiuewith the heated products of combustion that flow down from the top of the chambers to the smoke-flue. The material in this kiln is never subjected to the direct action of the products of combustion; but-itis quickly cooled in such manner that it does not part with the volitable substance, which render it valuable as a quick-igniting fuel. The products of combustion that pass through the center flues from the bottom of the coking-chambers are The gases which arise from thechilled in the tank and the precipitated substances collected, while the gases pass out of the stack.

We claim as our invention-.

1. A kiln having a coking-chamber, a furnace under one end of theboking-chamber,

fines extending from the combustion-chamber of the furnace to the top of the cokingchamber, a flue extending from the bottom of the coking-chamber to the stack and a holder with closed sides, ends and top and open bottom, adapted to be moved into and out of the coking-chamber, substantially as specified.

2. A kiln having a coking-chamber, a furnace under one end of the coking-chamber, flues extending from the combustion-chamber of the furnace to the top and the bottom of the coking-chamber, dampers for controlling the openings from the flues to the cokingchamber, a flue extending from the bottom of the coking-chamber to a stack, and a holder adapted to be moved into and out of the coking-chamber and having a removable hood that has closed sides, ends and top and open bottom, substantially as specified.

3. A kiln having a coking-chamber with brick side walls and roof, iron doors ateach end of the coking-chamber, a track extending through the coking-chamber, a furnace located beneath one end of the coking-chamber, a flue connecting the combustion-chamber of the furnace with the top of the cokingchamber, a flue extending from the bottom of the coking-chamber to a stack and a holder movable on the track and having a removable hood with closed sides, ends and top and open bottom, substantially as specified.

at. A kiln having two coking-chambers with brick side walls, center wall and roof, and iron doors at both ends, tracks extending through the coking-chambers, a furnace extending transversely below one end of the coking-chambers,flues extending through the walls from the combustion-chambers of the furnace and opening into the top and bottom of the coking-chambers, dampers for controlling the openings from the flnes into the chambers, fiues extending longitudinally under the bottom of the coking-chambers to a tank and a stack communicating with the tank, substantially as specified.

CASPAR W. METTLER. ADOLF METTLER. JACOB METTLER.

Witnesses:

F. (J. ROCKWELL, H. R. WILLIAMs.