US629094A - Steam-superheating furnace. - Google Patents

Description

' Patented .Iuly I8, i899; F. L. SLUCUM. STEM: suPEmlEATlna Fummc'e.

(Application Sled Apr. 14, 1897.)A (Kyo Nudel.)

if. A

To cillin/172.0771,v zit l17m/y concern):

' NITED S'rirrnsfr PATENT rrice FRANK n. sLooUM, or PITTSBURG, PENSYLVANI.

STEAM-su PERI-1islam-LNeV FURNAC. "i

' srnezrrca'rron forming parrfof'Leaers Patent No. e2e,o94, dated Juiy' leises.

BeitknoWnthatLFRaNKL;SLOCUM,a'resi dent of Pittsburg," in the coun-ty of :Allegheny and State ofk Pennsylvania, have invented a new andus'eful Improvement inv Steam-Superheating Furnaces; and I do hereby Vdeclare the following to be av full, clear, andexact description thereof. Y

My invention relates to steam-superheatin g furnaces; and it consists incertain improvements in furnaces for raising the steainto an exceedingly high heat, thefspecial purpose of snperheatin g the steam being to :raise it to a sufficient heat for-making 'gas by a continuous process in `which' the heat of the steam is sufficient both-tocause its breaking up. and combination' with the' carbon or other 'elementsof the coal and to maintain thecoal by` the heat of the steamiat rproperv temperato res lfor gas-making, as described in a separate apf plication of even 632,199. Y n

Inthefurnaceforming the subject-,matter date herewith, Serial No.

yof this application I employ a furnace-chamber preferably divided into two compartments, 'ahrc-chamber and a'doWntake-chamber, and within these I arrange a series of return steamsuperheatingpipes and horizontal tubular fines, so located that vthe steam'is gradually brought intothe hottest partof the furnace, v

while/the iiues areso 'arranged' vthat they increase by sizeor number in crossQsectional area from the steam-inlet to" thef steam-disf charge, whereby as theV steam is raised to'. a

higher and higher temperatura'and thereby. expanded, 'space for holding the same'with out material increa'seof pressure-is provided landleakage in the furnace prevented.

Theparticular points of inventiondesired to be covered will 'be .hereinaftermore particularly set forth andlclairned. l

v'llo enableothers skilled in the art to construct'and use my invention, I will v'describe the same more fully', referring to the accompanying drawings,` in Which-- Figure 1 is a longitudinal'central section of thefu'rnace., Fig. 2 is a vertical cross-secn tion on the line 2 2, Fig. '1. Fig. 3 is a ver- Vtical cross-section on the line 3 3, Fig. l. Fig.

4 is a vertical cross-section on the line 4 4, Fig. 1 g and Fig. 5 is a longitudinal section on `.the line' 5 5, Fig. Y

-forrfeeding coal or like fuel to the grate.

' Attimi@rea-Amun,1897;f serainaszics. (Nomina.)

Like letters indicar-@like pans in @een of the gures.

" f The Yfurnace is inclo'sed Within A'the front wall ct, rear wall l), topwall c', and side walls d d'.' .It has a heating-chamber A, in Vwhich are located the different stea'ln-superheating pipes and lines and which ispreferably arranged as shown, being divided into the main lire-chamber le. and the doWntake-chamber f back of the same,vthe two being divided by, the bridge-wall g. At the base of the downtakefchamberf is the escape-hoef', which leads either to a chimney or, as preferred by inc, to the boiler, where the heat not utilized Vinthe furnace canlbe utilized for the generation of steam. x

. The furnace can beheated by any suitable fuel, being shown as having the grate e and e2, having valso thefeeding-'opening e5 Located within the downtake-chamberf are the return steam-superheating pipeshm'ith which the steam-inlet i leads from the boiler; As more'clearly shown inFig. 3, the return-bend ash-pit steam-su perheatin g pipesarearranged so that' their ent-ire surfaces are exposed to directcon- `tact with theA hainey and heated products; These pipes are located inv such ya way as to fill the space' of the'downtake-chamber not ocaupied by the superheating-ilnes 7c la vand la? 2. sidered veryvdesirable, is asfollows': The inlet-pipe t' communicates with the vertical se` ries of return-pipes h', which'communicates The arrangementv shown, which is conwith the vertical series h2 and he'under the lower flue' k, the series h3 communicating with the vertical series h4, which leads up to the base of the chamber beside the ,'ilues 7c la to the base of the fines 102W and then extends A over. and 'communicates with the vertical series h5, which eiitends downwardly and coinmunicates finally withthe tile due k at h6."

' The irst point to notice in connectionwith the return tile flues lo la' k2 k2 and also with the tile lines in the main vor re chamber e, the upper series of which is marked Z and the lower series Z, is that the cross-sectional area of the iiues through which the steam passes successively increases fromV the inlet-point, where the pipe h opens into the flue 7c through the several tlues 7c k2 Z Z to the discharge-openying Z2, so that Ythe space is provided for the y soY expansion of the steam under the exceedingly high heat to which it is raised. This is either accomplished by employing tile of increasing sectional area, such as shown by the tiles la Zt', respectively, or employing an increased num- Vber of tile in each series, the series k2 having two tile,the series Z having three, and the series Z having four. Theinvention is intended to cover the construction whether the increased sectional area is obtained by increase in size or number.

As the tile are subjected to exceedingly high heats and as such heats might lead to cracking of the tile, IV prefer to arrange them in the way hereinafter described both for supporting the tile and to provide for quick removal and change in case of breakage. It will be noticed that rectangular tile are used and that they extend into theside walls cZ d', and, further, that separate tile, such as might be termed seat-tile, are built within the walls, as shown at m, these seat-tile having angular seats 'm' to receive the ends of the tile. These seat-tile are provided with such angularrecesses at the ends where access is not required to the flues, and, as shown in Figs. 2 and 4, they serve the extra functiony of providing the passage Within the side Walls from one flue to another. They are preferably formed of fiat plates having the seats m' along the sides, so as to provide for building up for any construction or shape of opening, either for a vertical opening, as at n, to con nect the iiues 7c 7o or for the side passage, as at fn', which connects the flues 7a2 with the dues Z; The opposite spaces of said seat-tiles m are also preferably provided with angular seats m2, into which tile plates m3 tit, so as to close the inner ends of the ports forming connection between the tlues. In order to brace these several fiues and hold the parts to place, I lnay also employ metal plates p, resting against the seat-tiles and tile plates, and like plates p' on lthe other side of the seattiles fitting around the tile iiues, so as to give support thereto.

In order to obtain access to the several tlues, so that they may be cleaned, if necessary, or where one of the iiues is cracked or Worn out to remove the same, I provide the brick-lined doors r r r2, the door?l giving access to the iiuet, the door v" giving access to the fines 7s and 7.52, and the dooro'2 giving access to the fluesZ and Z', these doors of course being made of suii'icient sizel to provide for the Withdrawal of the flue or l'iues through the same. These doors also close the outer ends of the ports or passages connecting the flues where necessary. For example, it will be seen that the Iiues 7c' and k2 extend within the side Wall CZ@ being supported therein by the plates p', similar to those used at the other -ends and their ends resting in seat-tiles q,

which do not extend over the ends of the iiues and so leave them free to be withdrawn, these seat-tiles q being secured in place in any desired way. This leaves a vertical chamber or space q between the ends of the tilesk and the door r, which forms the uptake passage or port between the iiues k and the flues 7a2. The same construction -is employed to form connection between the iiues Z and Z', forming the uptake-passage q2. To close these vpassages, the doors r r2, above referred to, are employed, said doors tting within the doorframes s, and to which the clamp-arms S are hinged at s2, said clamp-arms engaging with lugs s3 and carrying hand-screws S4, which engage with seats r4 on the outer faces of the door, so that after the door is luted with clay by means of said clamp-arms and hand-screw it may be securely locked to form a steamtight joint. The inner faces of the door are lined with brick or tiling, as at r, to protect them from the heat.

Wrhen the said furnace is in use, the high heat necessary for superheating the steam is generated Within the furnace, and where solid fuel is used this is accomplished by building thelire upon the grate c' within the fire-chamber e, the iiameV and heated products from the same rising around the series Z of steam-superheating fines, then .passing around the series Z, then passing over the bridge-wall g and around the series k2, and thence passing downwardly through the chamberf, around the linesV Zt" and 7o, and circulating around the return steam-superheating pipes h and escaping through the fluefl to the chimney or boiler.

Meanwhile steam enters through the inletpipe Z and circulates through the return su-V f perheating-pipes h, passing through the series Zt', h2, ha, h4, and h5, above described, and eventually entering the smallest of the hori- Zontal steam-superheating flues. The'steam then passes along the flue 7c through the uptake-passage n into the flue 7i; and along said flue into the uptake-passage q', and thence into the flues k2, whence it passes by the horizontal passage n across to the iiues Z', forming the upper series in the main fire-chamber, passing along these iiues, and thence by the downtake-passage q2 into the flues Z, from which it enters the passage n3 and iiows into the outlet-pipe Z2. It will thus be seen that the steam is passing in opposite course to the heated products, and therefore is being brought into a hotter part of the furnace as it passes through one horizontal set of lines to another, and is therefore gradually raised to a very high heat, and that at the saine time that the steam is thus expanded provision :is made to receive the expanded steam on account of the increased cross-sectional area of the horizontal superheating-iiues. Such construction provides for the bringing of the steam to an exceedingly high heat-indeed to such temperature that it is capable of heating and maintaining the coal in the gas-generator at proper heat for gas-making, and also pro` vides the necessary heat for causing its own decomposition in the presence of the coal, as above set forth. As it is thus heated and expanded on account of the increased space to IOO IIO

esseci y .Y n e receive the expanded steam the pressure is not materially increased, and therefore the i liability of leakage is much decreased, animyis,

ble to hold it if under highl pressure.

portant point in thel heating of the steam in.

tile Iiues and under extremely high temperatures Where it Vwould bepractically impossi- In case of breakage or wearing out of any of the lines they may be quickly changed, access tothe same being provided through the doors'r, fr', or r2, above described', While the `iiues are properly-centered. and supported within the side walls. x What I claim as my invention,l and desire to secure by Letters Patent, is-f 1. A steam-,superheatingfurnace having a fire-chamber. containing a series of horizontal tubular tile fines-mounted in the sidewalls,

said dues increasing in cross-sectional area fromk the steam-inlet to the steam-discharge,

substantially as set forth. Y

^ 2. A steam-superheatmg furnace' having a fire-chamber and a doWntake-chambeig separated therefrom by a bridge-Wall and having an outlet-flue at its base, said chambers each containing a series of tubular tile flues mounted in theside Walls and extending across the same, substantially asfse't forth;

3. A steam-superheating-furnace having a fire-chamber and a downtake-chamber, separated therefromby a bridge-Wall and having an outlet-flue at its base,said chambers each containing a series of tubular tile dues mounted in the side Walls and extending across the` same, said flues increasing in cross-sectional area from the steam-inlet to the steam-discharge, substantially Vas set forth. l

4.- A steam-snperheating V,furnace having therein a series of return-bend steam-superheating pipes with which the steam-inlet pipe communicates and a series of horizontal tiley dues with the first of which said return-bend pipes communicate, said ilues communicating with each other andtvith the outlet-pipe, substantially as set forth.

plates to close 5. A steam-superheating furnace having a fire-chamber and a doWntake-chamber separated therefrom by a bridge-Wall and having an outlet-due at its base, said chambers each containing a series of tile fluesl mounted -inv `the side Walls and extending across the same, andV a series of return-bend steam-superheating vpipes arranged Within said downtakechamber and communicating with one of said tile fines., substantially as set forth.

' 6. A steam-superheating furnace having a.

series cfhorizontal tile iiues extending across 'the rsame and seated in the side walls thereof, andlpassages formed Within the side Walls formi-ng communication 'between said iues, the inner ends of said flues ,resting in seattiles having angular recesses to receive them, substantially as set forth. l 7.. A steam-superheatin g furnace havinga seri es of horizontal tile fines extending across the same and seated in the sid'e Walls there- 0f,.and passages formed Within the side Walls forming communication between` said fines, ytheinuer ends of said dues resti-ng in seattiles having an guiar recesses to receive them, and vthe oppositel faces of said tiles having like angular recesses for receiving the tile the passages, substantially as set forth. 8. A steam-su-perheating furnace havinga series-of tile iiue's extending acrossthe same and supported in they sidewalls, a chamber or passage of as great diameter as the outer diameter of the iiue,vinto which one end of the tile iiue enters, and said passage'being' closed by aldoor, substantially as and for the. purposes set forth. f

In testimony whereof I, the said FRANK Ia n JAMES I. KAY,

ROBER'I." C. TOTTEN.

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