US519079A - Smoke-consuming furnace - Google Patents

Description

(No Model.) Y 3 Sheets-'-Sheet 1.

T. DARK,.Sr. SMOKE GONSUMING FURNAUEr No. 519,079. Patented May 1 12394'. i

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T. DAR srf SMOKE consume I'URNAGE. No. 519,079. Patented May 1,1894,

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T.'DA RK,Sr. Y SMOKE GONSUMING FURNACE. Patented May 1, 1894.

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SYMOKE-CONSUMING FURNACE.

SPECIFICATION forming part of Letters Patent No. 519,079, dated May {1894.

- Application filed November 28, 1893. Serial No. 492,217- (No model.)

To all whom it may concern.-

l 3e 1t known that I, THoMAs DARK, Sn, a c tizen of the United States, residing at the c1tv of Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Smoke-Consuming Furnaces, of which the following is a specification. ThlS lnvention relates to a smoke consuming furnace and has the object to produce 'a furnace of this character which is simple and durable in construction and which will effect- 1lially burn thesmoke without checking the In the accompanying drawings consisting of three sheets :Figure 1 is a front elevation of afurnace provided with my improvements. Fig 2 1s a vertical transverse section thereof, in l1 ne 2-2, Fig. 3. Fig. 3 is a longitudinal sectional elevation thereof. Fig. 4 isa vertical section, on an enlarged scale, in line 4-4, Fig. 5. Fig. 5 is a horizontal section, on an enlarged scale, in line 5-5, Fig. 3. Figs. 6

and 7 are fragmentary perspective views of the retort and the feed chest.

Like letters of reference refer to like parts in the several figures.

A represents the front plate of the furnace, B the side walls, 0 the grate arranged in the fire place or combustion chamber between the side Walls, D the fire bridge arranged at the rear end of the grate and E the boiler.

F represents retorts or mixing chambers ar ranged lengthwise in the side walls of the furnace and extending from the bridge forwardly about two-thirds of the length of the fire place. The retorts are preferably rectangular in cross section, and their inner sides are arranged fiush with the inner surface of the side walls so that the same are directly exposed to the fire in the combustion chamber. Each retort is provided Within its inner side with a longitudinal row of openings f.

G G represent the two sections of a cross pipe whereby the rear ends of the retorts are connected. These sections are arranged in the fire bridge and have their upper sides arranged flush with the top of the bridge and provided with a longitudinal row of openings 9. The outer ends of the cross pipe sections are rigidly secured to the rear ends of the retorts, and communicate therewith, while-their inner ends are connected by a sliding joint to permit the sections to contract and expand as the'temperature inthe furnace varies. This jointv consists preferably of an enlargement or hood it formed on the end of one of the sections, a flange 72/ formed on the end ofthe other section and arranged in said enlargement, and a packing k of fire clay arranged between the inner side of the enlargement and the adjacent section, in rear of its flange.

I represents feed chests whereby the fuel is supplied to the retorts and which are arranged lengthwise in the side walls. These retorts extend from the front plate of the furnace to the front ends of the retorts and have their inner sides arranged flush with the inner sides of the side walls of the furnace. The feed chests are preferably rectangular in'cross section and are connected at their rear ends with the retorts by sliding joints to permit the retorts and chests to expand and contract. Each of these joints is substantially the same as the joint between the sections of the cross pipe and is constructed as follows:

2 represents an outwardly projecting flange formed on the rear end of the feed chest and extending along the top, bottom and outer side thereof.

i is a notch or recess formed in the end of the chest adjacent to its inner side.

J is a U shaped hood or enlargement formed of a top plate j, a bottom plate j, and an outer plate 7' j is a tenon or lug formed on the front end of the retort adjacent to its inner side. The hood of the retort passes over the flanged rear end of the feed chest and the lug .ofthe retort entersthe recess of the chest, thereby holding the chest and retort against lateral displacement with reference-to each other.

7' represents a packing of fire clay arranged between the hood and the chest in front of the flange 0f the latter whereby a practically tight joint is formed between the retort and chest. This construction of joint enables the inner sides of the chests and retorts to be arwith two longitudinal partitions which divide it into an inner channel 70, an intermediate channel It and an outer channel L represents receiving heads which receive the fuel and deliver it to the feed chests. Each of these heads is secured to the front plate of the furnace and is divided by partitlonsinto an inner chamber Z, an intermediate chamber Z and an outer chamber Z The inner, outer and intermediate chambers of the receiving head are in line with the corresponding channels respectively of the feed chests, and are connected therewith by openings formed in the front plate. The chest and head are secured to opposite sides of the front plate and firmly drawn against the same by bolts 97?. passing through ears formed on the chest and head-and through the front plate.

N represents a main steam pipe connected with the dome of the boiler and provided with branch pipes or 02 connected respectively with the inner chambers Z of the receiving heads L. In each of these steam pipes is a Upon opening these valves, the

valve n. steam passes into the inner chambers of the receiving heads, thence through the inner channels of the feed chests and thence into the retorts. The inner side of each feed chest, being exposed to the heat of the fire place, the steam in passing through the inner channel thereof, is superheated before it enters the retort.

0 represents air supply pipes connected with the intermediate chambers of the receiving heads. Upon opening the valves 0 of these air pipes, air is admitted to the same and passes successively through the intermediate chambers, the intermediate channels of the feed chest and into the retorts. The air in passing through the intermediate channels is heated before entering the retorts, by the steam in the adjacent inner channels.

P represents perforated spray pipes whereby oil, gas or similar fuel is delivered into the retorts. These spray pipes are arranged lengthwise in the retorts and the outer channels of the feed chests, and are provided at their rear ends with angular branches 19 extending into the sections of the cross pipe. The front ends of these spray pipes aresecured in the outer openings of the front plate, preferably by a screw joint, and open into the outer chambers of the receiving heads.

Q represents fuel supply pipes which connect with the upper portion of the outer chambers of the receiving heads. Upon opening the valves q of these fuel supply pipes, the gas, oil or other fuel passes into said outer chambers, thence into the spray pipes, thence through the perforations of said pipes into the retorts and the cross pipes G. The fuel issues from the spray pipes in a finely divided state and is commingled in the retorts and the cross pipes with the heated air and the superheated steam forming a gas. As the inner sides of the retorts are exposed to the heat of the fire place the fuel, air and steam in the same are intensely heated, which assists in forming an intimate mixture of the same, thereby producing a gas having highly combustible qualities. The gas formed in the retorts passes through the perforations of the latter and the cross pipe and is delivered in jets over the sides and the rear portions of the fire place, where it is ignited by the flames and consumes the smoke as it rises from the fire on the grate.

This construction of smoke consuming furnace does not require the furnace to healtered in any respect, all of the parts be1ng built in the masonry, which permits the furnace to be used in the ordinary way, if by accident the smoke consuming apparatus should become inoperative.

By the use of this smoke consumer, the fire is not checked because sufficient air is supplied to the retort to consume the fuel without detracting from the draft of the furnace fire.

In order to permit of cleaning the perforations in the spray pipes, retorts and cross pipes, blow-oft pipes R are connected with the outer chambers of the receiving heads L. Upon opening the valves r of theseblow-oif pipes and the valves of the steam p1pes and closing the valves of the air and fuel plpes, the steam unmixed with oil or air, is forced partly through the perforations of the cross pipes and the retorts into the fire place and partly through the perforations of the spray pipes, into the latter whence it escapes through the blow-off pipes, thereby efifectually clearing these passages of any accumulations of grit or sediment.

I claim as my invention- 1. In a furnace, the combination with the side walls of the fire-place, of retorts arranged lengthwise in the side walls and having perforations which open into the fire-place, a cross pipe connecting the rear portions of the retorts and having perforations opening into the fire-place, and conduits for the gas forming materials connected with said retorts,

substantially as set forth.

2. In a furnace, the combination with the side Walls and the fire-bridge, of retorts arranged lengthwise in the side walls and having perforations which open into the fire-place, a cross pipe connecting the rear ends of the retorts, arranged in the fire-bridge and hav ing perforations opening into the fireplace, and conduits for the gas forming materials connected with said retorts, substantially as set forth.

3. In a furnace, the combination with the side walls and the fire bridge, of perforated retorts arranged lengthwise in the side walls, and a perforated cross pipe arranged in the fire bridge, and composed of two sectionshaving their outer ends connected withthe rear ends of the retorts and their inner ends connected by a sliding joint, substantially as set forth.

4:. In a furnace, the combination with the ICC retorts arranged lengthwise in the side walls, a perforated cross pipe arranged in said fire bridge and consisting of two sections con-- nected at their outer ends to the rear ends of the retorts, a hood or enlargement formed at.

the inner end of one section, a flange formed at the inner end of the other section, and arranged 1n said hood or enlargement, and a packing arranged between the adjacent port1o n of the sections, substantially as set forth.

0. In a furnace, the combination with the fire-place, of a perforated retort arranged in the wall of the fire-place, a feed chest also arranged in said wall and provided with independent channels connected with said retorts, whereby the gas forming materials are independently heated in said chest preparatory to entering the retorts, forth.

6. In a furnace, the combination withthe side walls of the fire place, of perforated retorts arranged lengthwise in said walls and feed chests arranged lengthwise in the side walls, and having theirinner sides flush with the inner surface of the side walls, said chests opening with their rear ends into the retorts and conducting the gas forming materials 1nto the same, substantially as set forth.

7. In a furnace, the combination with the side walls of the fire place, of retorts arranged lengthwise in said walls and feed chests arranged in the side walls and connected at their rear ends with the front ends of the regortls1 by a sliding joint, substantially as set 8. In a furnace, the combination with theposed of top, bottom and outer plates andin-'" er lugs, of feed chests arranged lengthwise 1n the side walls, flush with the inner surface of the latter, and provided at their rear ends with flanges extending along their upper, lower and outer sides and with inner recesses, the flanges of the chests being arranged in the hoods of the retorts and the lugs of the latter being arranged in the recesses of the chests, substantially as set forth.

9. In a furnace, the combination with the side walls of the fire place, of retorts arranged lengthwise in said walls,'feed chests arranged 1n the side walls and connected at their rear substantially as set I ends with the retorts and each having longitudinal partitions dividing the same into an inner steam channel an outer fuelrchannel and an intermediate air channel, substantially as set forth.

10. In a furnace, the combination with the side walls of the fire place, of retorts arranged in said walls and having perforations opening into the fire place, feed chests having their rear ends connected with the front ends of the retort-s and each provided with longitudinal partitions dividing the same into an inner channel, an intermediate channel and an outer channel, receiving heads having inner, intermediate and outer chambers which communicate respectively with the inner, intermediate and outer channels of the feed chests, steam, air and oil or gas supply pipes connected respectively with the chambers of the receiving heads, substantially as set forth.

11. In a furnace, the combination with the side walls of the fire place and the fire bridge, of retorts arranged in said walls and having perforations opening into the fire place, a perforated cross pipe arranged in the fire bridge and connecting the rear ends of the retorts, feed chests arranged in the side walls and having air and steam channels opening into the front ends of the retorts, and perforated spray pipes arranged in the retorts and cross pipe and connected with the oilor gas supply, substantially as set forth.

12. In a furnace, the combination with the side walls of the fire place, of retorts arranged in said walls and having perforations opening into the fire place, feed chests having their rear ends connected with the front ends of the retorts and each provided with longitudi nal partitions dividing the same into an innor channel, an intermediate channel and an outer channel, receiving heads having inner, intermediate and outer chambers which communicate respectively with the inner .intermediate and outer channels of the feed chests, steam, air and oil or gas supply pipes connected respectively with the chambers of the receiving heads, and blow-0E pipes connected with the outer chambers of said receiving heads, substantially as set forth.

Witness my hand this 21st day of November, 1893;

, THOMAS DARK, SR.

-Witnesses:

THEO. L. POPP, J NO. J. BONNER.

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