US1287602A - Furnace. - Google Patents

Description

Patented Deo. 10, 12H8.

2 SHEETS-SHEET I.

A APPLICATION HLEDAUGl 17. maw

l. METESSER.

FURNACE.

APPLICATION FILED MIG. I7. 191e.

2 SHEETS-SHEET 2.

Patented Dec. 10 1918 @gw/M @d/wow w m m Cfr LENIS METESSER, OF NEW' ORLEANS, LOUSANA.

FUR-NACE.

Specification of Letters Yatent.

i'arented Dec. ii, 121518.

Application filed August 17, 1916. Serial No. 115,438.

To all wlw/n, t may conce/ra.'

Be it known that l, Lewis Miirnssnii, a citizen of the United States, residing` at New Orleans, in the parish of Orleans and State of Louisiana, have invented certain new and useful improvements in Furnaces, of which the following is a specification.

This invention relates to improvements in furnaces and particularly inetallui'gical furnaves wherein metals or their alloys are heated, melted, puddled, annealed or otherwise treated and the invention also relates to the constincti'oinof kilns for nodulizing, vit rifying and the like. A

in iinyw'rtaiu object of this invention is to produce a li'uri'iace of the character described, in which the degree of heat and the character and extent of chemical action therein can be effectively controlled and both the heat 4and chemical action maintained s'nbstair tially uniform throughout the ti'eati'i'ientof the material therein.

il A further object of the invention is to provide a furnace of increased efficiency and economy of operation.

Other objects and advantages ofthe in- Vention will be apparent dui-ing the course of the following,- description.

ln the accompanying` drawing" forming a `part of this specification and in which like numerals are employed to designate like parts throughout the saine,

Figure l is a transverse vertical sectional View taken on line 1--1 of Fig. 3 and looking in the direction of the arrows,

Fig. 2 is a similar view taken on line 2 2 Y 'of Fig. 3 looking in the direction of the arrows, and,

Fig. 3 is a longitudinal vertical section taken approximately on line 3-f3 of Fig. 1. ln the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5' designates the shell 0r body portion of the furnace, in the forward portion of which is formed a combustion chamber 6, as shown.-

This combustion chamber inaly be of any required area and form, and is adapted to receive any suitable mechanically or manually operated mechanism for handling fuel, the saine being of adequate capacity for the kind and quality of fuel t0 be burned. This combustion chamber, in the type of furnace illustr-ated, is provided in its lower portion with an. incline, rate 7, comprising spaced sets of twyers 8, which are hollow and have laterally extending out-let openings 9, discharging into the chamber 6, and inlet. openings or chambers, as is well lrnown. These twyers are arranged upon a bed plate T. The inlet openings or chambers of the twyers coi,.- niunicate with a gas supply passage 10, closed at its top and opened al' its bottom, as shown.

llhe fuel, such as coal., coke or the like, is fed into the combustion chamber ti by nieans of feeding mechanism 9 whirh inay be of any well known or preferred construction, scrif'ing to force the fuel between the sets of twyers S, such fuelpassinginto the coinbiistion chamber 6, wherein it is subjected to the action of heat and of gases (.lischarging` from the openings 9 of the twyers.

Arranged within the lower portion of the shell 5 an open top, water cooled and water sealed ash pit 1i., formed by the walls 13, 1a, and 15. The 'all 15 may be formed of masonry or inetal plates, as may be best suited to the conditions of each case.

rlhe open top water cooled and water sealed ash pit 12 is provided near its bottom with a Water seal 15, having an outlet 16, for the mechanical or manual removal of ashes. vThis outlet may be forined through the front, rear or side walls of the construction. The mechanical cleaning may be accomplished without disturbing the water seal of the ash pit 12. This prevents materially changing the character of combustion or degree of temperature in the combustion chamber 6 or effecting furnace capacity. The partially consumed fuel in the open upper part of the ash vpit 12 forms a tire siii'- face' for finishing the gasificationA or coinplete combustion of the fuel in the tire box and the closed lower part of the receptacle receives the incoinbustible partsof the fuel, after discharge into the same, by any suit able means, provided for the purpose. The water seal is provided with drain and overflow pipes or openings 17 and 17, ais-shown.

Arranged upon the back wall ofthe coinbustion chamber G is a water back or iron plate 12', behind which are disposed pipes 14: `receiving water from means to be de! scribed. The provision of the'iron plate 12 prevents the adhering of clinkers and the provision of the water cooling pipes 111 preserves the plate as is well understood in the therethrough and is discharged into the ash pit 1G through pipe 15a.

The nlnneral 17 designates a wind box, preferably closed upon all sides and bottom and opened at its top, for free communication with the gas passage.

Arranged near the rear or inner end of the wind box 17 and under the overhanging edge of the bed plate 7', as shown, is a perforated pipe 18, discharglng water upon rear end of the wind box to externally cool it. The perforated pipe 18 also serves to supply water into the ash pit, introducing the water heneath the hot ineombustible mass, for supplying, by disintegration, oxygen to the rear part of the combustion chamber, to complete the gasification of such parts of combustible material as maybe automatically discharged yover the open top of the ash pit, and for sup- 20' plying water to the seal.

The pipe 18 is connected with the pipe 1l by a pipe 20. l'Vater is fed into the pipe 18 through a pipe 2l, having a valve 22 connected therein. This pipe has connection with any suitable source of water supply. The pipe 21 has connection with a transverse pipe 23, for the external cooling of the frame of the cleaning door 24.

The combustion chamber 6 has an outlet openingl 25, for the passage of gases and products of combustion into the usual heating and treating chamber, containing the metals or ores or the like to be treated. The door 24 leads into the combustion chamber 6, near and above the ash-pit 12, whereby access may be had thereto, for cleaning.

The numeral 26 designates an air supply pipe, having branches 27 and 28. Each branch is equipped with a quick acting slide valve 29, for controlling the passage of air therethrough. The branch 28 discharges into the wind box 17, as shown, for the partial gasification or complete combustion of the fuel, and supplying-,the same air pressure at all times to the twyers. The branch 27 discharges into a preferably vertical air heating passage or conduit 30, formed in the bridge wall 31. The opening 30 extends upwardly and discharges into a horizontal passage 32, formed in such wall, and provided with outlet ports'or openings 33 discharging into the ore treating chamber. The function of this construction is to provide preheated air, for secondary combustion, and it is to be understood that such preheated air may be supplied from the heating chamber of4 any desired form and capacity of prehcater required. The discharge i of the air through the branches 27 and 28 is regulated by the slide valves 29.

It will be understood that, by the provision of a single air supply pipe 26 and the branches 27 and 28 connected therewith as shown,- the air is normally supplied for fuel combustion through the twyers 8 and for secondary combustion through the preheating conduits 30, at the same pressure and that by manipulation of the valves 29 this pressure may be regulated as desired.

The numeral 34 designates a steam supply pipe, connected with a duplex valve structure 35. This valve structure is connected with a pipe 36 adapted to discharge to the atmosphere. Connected with the valve structure is a pipe 37 discharging into the wind box 17. The valve structure comprises quick acting valves 38 and 39, the valve 38 serving to close the pipe 36 While thevalve 39 opens the pipe 37, and vice versa. rfhe valves 38 .and 39 are simultaneously operated by a lever i0, pivoted at l1. The duplex valve system consists of two duplicate uuick opening valves, with central fitting, which central fitting has two vertical openings to the valves and two horizontal openings for connection with the supply pipe, and fulcrum of lever. The needed pressure for creating the draft which pressure may be steam, exhaust or live, or various gases, or combination of two or more gases is supplied through the duplex valve structure to produce the desired character of combustion and degree of heat, within the limit of the fuel used, and chemical mixtures within the combustion chamber, to perform the required work, such as heating metals for rolling, forging, and other forms of fabrication, melting, converting, and annealing, carbonizing or roastin ores in furnaces, and nodulizing and vitriying in kilns various combination and products.

In the operation of the valve system shown, steam or other chemical gases enter the supply pipe, and pass down through valve 39, when lever 40 is out, into the Wind box 17, or up through valve 38 to the atmosphere or waste, when the lever is in reverse position. One movement of lever simultaneously operates' both valves 38 andA 39. The pipe 34 and associated elements are provided to utilize the exhaust' steam from an engine, by supplying the same to the furnace without substantially impairing the operation of the engine. If the exhaust from the engine is substantially retarded, the operation of such engine is seriously impaired. A Isingle valve to alternately place one branch pipe into and out `of communication with 'and'from the steam supply pipe could not be operated sufficiently quickly, to prevent: substantial back pressure in theengine. It is essential that there be two valves 38 and 39, which are simultaneously set into action, one closing and one opening, so that their operation is simultaneously completed.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size, and arrangement of parts may be reramene sorted to without departing from the spirit of the invention or the scope of the subjcined claims, l

Having thus described my invent-iony I claim:

1. In a furnace of the character described, a, shell having therein a combustion chainber, an open top water sealed ash pit arranged therein, a` fuelv support arranged within the combustion chamber substantially wholly upon one side of the ash pit and' having,l one end thereof projectingv across the open top of the ash pit for a.

slight distance for providing a protecting member, a Wind box disposed under the fue! support and having one side thereof serving a portion of one wall of the ash pit,

and a perforated pipe disposed under the protectingr member in proximity to the Outer wail of the wind box to supply Water thereto and to the ash pit. y

Z n a furnace of the character described, a shell having,` therein a combustion chamber, a. fuel support therein having air passages extending therethrough, an-opeii-top water sealed ash pit arranged at one side of the fuel support and adapted to receive consumed and partially consumed fuel thereim a Wind box disposed under the fuel support and adapted to supply'. to the air passages of the fuel support,'v one side of said Wind box forming a portionofpne side off'fthe ash pit, and means tow discharge Water upon the said exposed side of the Wind box for externally cooling it and to supply water to form the seal for the ash pit.

In testimony whereof I aiix my signature in presence of two Witnesses.

LEWIS METESSER. Witnesses L. M. CRESSMAN, MARY B. HALPIN.

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