US825522A - Reverberatory furnace for the production of steel. - Google Patents

Description

No- 825,522. PATBNTED JULY 10, 1906. V. DBFAYS.

RBVERBBRATORY FURNACE FOR THE PRODUCTION OF STEEL.

APPLICATION FILE JUDY 2B. 1903.

2 SHEETS-SHEET i.

ATTORNEY.

PATENTED JULY 10, 1906.

V. DEPAYS.

RBVBRBERATORY FERN AGE PO R THE PRODUCTION OF STEEL.

APPLIGATIOH FILED JULY 23.1903.

2 BHEETS-SHEBT 2 l i I i 0 a :x 4

l! iILil /NVENTOR (1i tzwDefgyc J3) A TTORNEY UNITED STATES PATENT OFFICE.

VIUTOR DEFAYS, OF BRUSSELS, BELGIUM.

REVERBERATORY FURNACE FOR THE PRODUCTION OF STEEL.

N 0. 825,522. Specification of Letters Patent. Patented July 10, 1906.

Application filed July 28,1903. Serial No. 16?,388.

To all whom zit may concern:

Be it known that I, VIc'rou DEFAYS, engineer, a subject of the King of Belgium, I'BSIClmay be utilizedsuch for exampiealso permitting of the exact mg at Brussels, in the Kingdom ofBel iurn, have invented certain new and .usefu Iniprovements in Reveroerator Furnaces for the Production of Steel, of w rich the followin is a specification his invention relates to improvements in reverberatory furnaces for the production of steel. These improvements have for their object the attainment of more complete. combustion of the gases than has hitherto been possible, so that extremely poor gases as blast-furnace gases,

reguiation of the oxidizing properties of that gortion of the flame which passes over the ath, of protecting the part of the furnace through which the flame enters and the air and as flues through which it passes from the urnace to the recuperation-chambers against the fusion and disintegration caused by an excessive temperature, of permitting in case of'deterioration of the speedy replacement of the exposed portions of the furnace, of facilitating access to the metahchariiher of the furnace, and finally permitting of conveniently and compactly grouping the various constituent parts of the furnace.

In order to attain these ends, the invention consists, broadly, in a novel arran ement of at its 11 per 7 and gas, the combustion-chem thro the gas-fines and air-fines, the sai arrangement being characterized by the fact that at each extremity of the furnace a gas-flue o ens glh, a suitable aperture into a com usamber between the apertures of two u tlon-c in such a manner that a sheet or air, the axes of these three fiues being pref erably conver out, so that the jet of gas may be attached, or. exempts, from left to right art by one of the air-jets and from t to eft at the lowerpart by another jet, so t at it assumes a gyratory movement, insuring intimate mixture between the combustible and the carrier for oxy en.

The invention is also charac' erized by the eciai arrangement of the combustionc embers and r r constis tuting a removable. part independent of the oi the fines for supgg j mctaicha1nber of the furnace and of each of the air and gas supply flues which are aiso removable. Another characteristic of the invention is the combination, with these fines, of recuperation-chambers of iar e capacity and double circulation, arrange with their major axis parallel with the major axisof the metai-chamber of the furnace, these chamhers being completed by suitable reversing doors installed between the waits of the chambers corresponding to each extremity of the furnace.

Means for carrying the invention into practice isreprsented, by way of example, in the accoinpsnying drawings, in whieh Fi re 1 is a ion itudinai section on the iine A of Fig. 2. i 2 is a horizontal section on the line B B of ig. 1. Fig.3 is a section on C C of Fig. 1.

As shown in the drawings, at each extremityof the major axis of the furnace a is provided a combustion-chamber l independent of the furnace and removable, into which open through the apertures b c d or gas and air admissions three flues 2, 3, and 4, of which 2 openshalf-way up the combustionchambe'r and serves for the admission of the as, while the two other flues 3 and 4 serve or the supplyfiof air and are above the other beneath the as-suppiy flue 2. The axes of these three fines preferably converge toward the same oint, as indicated by the arrows in Fig. 2. boss flues are in dependent of the combustion-chamber 1 and each of them may be readily removed by means of a lifting a pliance or suitable convcyer. To each of t esefiues corresponds at each extremity of the furnace a recuperation chamber with double circulation, presenting e long path, and the axes of these chambers are arranged parallel with the major axis of $.53, iti In the tire the air-chambers by 6 and Eaeh'group of two chambers arra ed oiaposite one to the other at each extremity the furnace terminates in a reversing door finer it), installed between'the twowalls of the chambers. r j

f The furnace is also provided with the ordinary accessories, particularly with are 'ster for regulating the gas and two air-re sting registers. represented in the drawings, permit of suitab y proportioning the quantities of gas and air which are to enter the chambers,which restore the heat that the T have received be- 1 Each chamfore the inversion of the oors.

her is further provided with a chimney-register, (11 and 12, for example, in Fig. 1,) per- 1 mitting of suitably distributing between the various chambers which are being reheated the flame which leaves the furnace.

A general smoke-register, which is not represented, is arranged in the general conduit leading to the chimney.

The operation of the furnace as a whole is similar to that of all furnaces of this kind, nevertheless the arrangement described above modifies the working in the following manner: The flat tongue or sheet of gas coming through the flue 2 and entering the chamber 1 through the gas-inlet b is interposed (from the time it enters the combustion-chamber 1) between two tongues of air entering throu h the air-inlets'3 4. Under the influence these two tongues of air, one of which attacks it at its upper part and the other at its lower part in convergent directions, the flame tends to assume a gyratory .movement, contributing in a lar e measure to insure an intimate mixture 0 the combustible and carrier for oxygen, and conse quently a complete combustion at a very high temperature, ermitting extremely poor gases to be utiized as combustibles. On the other hand, owing to the special form of the chambers 1, the sections of which, Fig. l, progressively decrease toward the furnace a, the superposed tongues or layers of air and gas undergo a certain flattening out and are compressed in such a manner as to penetrate each other, and thus insure in a still more perfect manner the mixture of the gas and air. The oxidizin action of the flame may be re ulated at wil according to the demands of t e work merely by operating regis ters regulating the quantity of air passing above the flat layer of gas with respect to that passing below. It will also be noticed that owing to the special arran 'ement of the air and gas flues no portion of t e masonry 1s exposed u on its two faces to the direct action of t e flame. One of the two facesof the masonry is always able to radiate its heat, contrary to what is the case in furnaces as hitherto constructed, so that there is no longer any fear of the disinte ration or even fusion of certain portions of t e combustionchamber or flues. In case of deterioration each flue may readily be removed and replaced in thesame manner as the combustion-chamber, properly so called. The removal of these parts parts ermits, in addition, of access to the meta -chamberof the furnace at its two extremities, which is par- These registers, which are not E ticularly useful in case repairs of any magnitude are necessary.

VVhat' I claim, and desire to secure by Let ters Patent of the United States, is

I. In a reverberatory furnace for the manufacture of steel, the combination with the metal-chamber of independent combustionchambers at each end of said chamber, and removable gas and air flues entering the former and arranged to impart to the gas and air passing therethrou h a rotary motion as the same passes into t 1e metal-chamber.

2. In a reverberatory furnace for the manufacture of steel, the combination with the metal-chamber, of a combustion-chamber at each end of said chamber, central "as-fines connected with said cembustiomchambers and aterally-disposed air-flues, also connected with said chambers, and disposed at different levels as to inclose the jet of gas.

from the as-flue between two layers of air, and give t 1e same a rotar motion in passing throu h the metal cham er.

3. n a reverberatory furnace for the manufacture of steel, in combination with the furnace, a combustion-chamber, at each extremity of the longitudinal axis of the furnace, a gas-inlet opening into each combustion-chamber half-way up this chamber, two air-inlets opening into each combustion chamber and arranged one above and the other below the gas-inlet, removable fines independent of the furnaceproperly so called and joined to these gas and air inlets in the combustion-chambers, and recuperation-chambers communicating with these fines, substantiall as described and for the purpose indicatedl 4. In a reverberatory furnace for the manufacture of steel, in combination with the furnace, a combustion-chamber at each extremity of the longitudinal axis of the furrnace, a gas-inlet opening into each combustion-chamber half-way up this chamber, two air-inlets opening into each combustionchamber, these air-inlets being arranged one above and the other below the gas-inlet, removable flues, independent of the furnace, joined to these gas and air inlets, their axes converging toward the same point in the combustion-chambers, and recuperationchambers communicatin with these flues, substantially as describe above and for the purpose specified.

5. In a reverberatory furnace for the manufacture of steel, in combination with the furnace, a combustion-chamber at each extremity of the furnace, the section of these chambers progressively decreasing toward the furnace, a gas-inlet and two air-inlets formed in these combustion-chambers, the air-inlets being arra ed one above and the other below the gas-in at and laterally of the said gas-inlet in such a manner as to introsewn a duce into the furnace a tongue or layer of gas fines, the whole substantially as described :0 arranged between two admissions of air and and for the purpose s ecified.

' producing the mixfjure of gas and air by the In witness whereof have hereunto set my compression of the superposed la'yers of air hand in presence of two witnesses.

and as, this eompresslon resuiting from t e i r a dimihishing section of the combustion-chem- V VICTOR DEB ber toward the furnace, fiues conducting the wltne'ssesz gas and air to each combustion-chamber and GEORGE BEBE, recuperation-chambers communicating with GREGORY PHELAN.

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