US1430713A - Regenerative furnace - Google Patents

Description

A` S. G. NGRTONl REGENERATWE' FURNAGE. APPLICATION FLLED'OCTsZIK, 192i.

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E rl of? SC'UEL G 'l/TORION, QF DQUESNE, PENNSYLVLNA.

Application filed Uetober 2/ 1921.

To all whom may concern:

e it known that I, SAMEL G. WonroN, n citizenof the uUnited Staes, and resident ciy Ouquesne, in the county of Allegheny and Pennsylvania.) have invented ceriaein newV and. useful improvements in Regenerative Furnaces, of which the fol.- lowing is e specification.

invention relates lo the construction of regenerative furnaces, and more paricuierly to the construction und etrange meer ci' :lines -which connecl; 'the poris locerecl ai ea'cn end of such furnaces wih the furnace regenerator chambers.

in the operation of regenerative furnaces, considerable quenicies of the nely divided scliris in suspension in. the Waste gases or producs of conihuszion are carried from *che furnaces hrouglu the ports into the regenereiior ilues by *che Waste geses, :incl be come fleposizecl in the .ilues and regenn eraor chambers. in operating regeneralive open-liearlh furnaces it also frequently happens @het the slag will boil over into ehe furnace porcs end en'lier the furnace i'lucs connecting the por's and rcgenerator chambers, 1

l The eccuniule'eions of slag end finely divided materials in the lues lessen lie eiii:

'cieucy or' lhe fu'fnewes9 and occasion fre quent delays in the operacion or `the iurnace.

in order to reino-ve che accuniulalecl ina cerials, which highly heated when enn order lo lessen the frequency ci? cleaning the flues and regenereor il; is common prac-lice 1o enlurge the horn zonel. Vlues leading 'from the regeneratcr in the *furnace so es io forni Wlial"I lerincfl slay;- sockets. These Rues Slug pocuecs Aare ci? suiiicient size so hold large quantity of slug anal trapped solids not require cleaning except after long 'c inervuls loueur-1r, use has sluov'n chut' the enlarged ,slang nuchtere iessen l'he elliciency ci@ che furnaceu since 'lire gases azul products or cornlnusrion Gassino; into these enlarged pockets enroute from and so the rcgenerators nre suddenly expanded, with il e in energy clue to the sudden consequence che velociy or is correspoudingly reduced. Also slowing; of he velocity ci the gases and con" scquen coolin increases this loss by *che duction in vc oc or ges, so that the gases enter the furnace cnr-i the regenereors et e much lower race than will occur when the lossof energy is prevented in furnaces embodying my invention.

.'Qne object of Iny invenion is the provision in a regenerative furnace oi' slug pockets of such size und contour as will not .maerielly decrease the yclocilzy of the incoming gases and outgoing producir or" combustion y passing Ycherehrough.

Another object o'l the invention is zo construct che slagr pockets in e higlly novel. manner whereby lie and other inaterials cleposi'ed lherein will Toe rapidly cooled, so es 5o pei-Inito their ready removal and make their removal much less laborious. l

Still another ohjec of my invenflion is to construct a slag pocket orn the improved design and novel combination of perte de scriloerl in the following speciiczition illustrated in the accompanying drawings, in whichz v l Figure l is :i longiuflinal sectional eleverion showing one end of e regenerative Jfurnace havingq slug pockets consruced in accordance with 4':his invention.

Figure is a sectional end elevulion of the furnace shown in Figure l, the section being taken on the line lL-li ol.z Figure l.

Figure 3 is a sectional end elevation similar to Figure E?. the section being taken on che line lll-Hl of igure l...

Figure l is a sectional plan on che irregular line lV-V of Figure l., showing che urrangemenl: andlocetion of the lues relative to the end of the furnace and elle furnace regcneraors9 the refraclcuy Knef rerial on iop of che merel licor lacing omizieii V.for the sake of clearness.

in the accompanying ilreivings, which show one end of :i regenereve open-hearli furnace, lhe nuinerzil 2 designates the furnace heur/cli., und 3 l'he nir port in. che enfl of the furnace hearli which connec's che lieurli willi the upper enlbf vertical uir llucs .f3 The end of the furnace` also has a central uns port Ll which connects the ends of lhc hearth 2 wiih alle verticei flue (5. into the top or an enlarged liorizonial liuc l" which Yfurnis e slug pocket for the air lines, and the lower end of the iniclclle verv tical flue or flue 5 opens into the top of the enlarged horizontal n ue forming the slag pocket 8 for the ges iue 6. @ne enel of the slag pocket 7 Opens into lshe zur ie- The lower ends of the air llues tionen the pipes '15 through e piug Wiii9 of course,

generator 9 and one emi oi the sieg pocket 8 opens into the ges regeneretor 10, the other end of these sieg pockets being bieriireci off or dosed by buikiieeds 20 11u15/31.

f1 similar arrangement o1 air and gas ports 8 and 1, verticei tiues 5 and 6, and. horizontei fiues or sieg pockets one 8, is employed to connect the other eed of hemth 2, with air end ges regeneretors Q miciA 10 Jfor tiret end oi: the urriaee.

1n each of the sagpockets 7 and 8 is e Water cooled bott-om weilor Hoor which may conveniently be raised or spaced aioove the bese of the pocket in order to reduce the size of the sieg pocket. -s shown., the We ter eooied fioors in the slag pockets 7 ami 8 ere supported above the bese of the poele ets .by piers 11 arranged aiorig the sides of the pockets. Rails orgirders 12,* wiiich extenti eeross'the Width of the pockets, ere supported on the piers, and a metal plete' 13 mounted ori the rails or girders 12. It

be understood. that when. riesired the piers 117 girders 12, arid piste 13, may oe omitted enti the Wetter eoole r'ioor supported on brick Work buiit up to the desired height. A loose eyer of loam or other finely divified refractory .materiel 14 is pierced on top of the plate 135 arid e plureiity oir' Water cooied pipes 15 are embecided in the ioose meteriei 14, (three being shown in tile' drewings. A `reirectorjy covering 15, Such es bricka is provide/ri on top of the refractory nie-termi 1e and pipes 15. The Waiter 'cooie pipes 15 which are connected in series, comprise outer pipes or cesings 15, which here one, (the inner end ciosed "by e silitebe ping, The outer ends of the pipes 15, which extendb'eyondethe ends of the sieg @oeirets' 'Z' and 8., are closed bye T or other the furnace ,visserie ftiiisfouiirheed being on a, iiriew.. -omtiie Vereicei ges time f6 terthest.

s'aiiteioie fitting 17 having end sindbreechA openings jfor trie connection of smeiier pipes. ii'seseiier pipe 17 is inserte@` in each oi in one end of 1'2', the inner e116 of each pipe 1'3" erteneii'ng to e point adjacent to inner erzo of e pipe 15. outer enti of +1 s pipe 1T in one or the outside. pipes 15 1irptjex "to be connected to e. suitable soi s' of water supply, Wiiiie the outer'enois other two pipes 17" ere connected by to the breech openings in 'the f atc/ings 17 ori the other pipes so es to cause e continuous tieve' of water from the source of euppijy through 'tiie fiipe 17 in the rs; tiioe or pipe 157 then out through the branch opening 1n the ttirrgf 17 on seid tube through the connection 18 to the pipe 17 oi2 the next tube 15, end so on untiixthe isst tube is reached, when the Water will iiow out `through e pipe 19 connected to the branch opening in the fitting 17 or" seid tube to e suit-aille drain. l

A suitable buikiieeci 20 is. buiit in the sieg pocket 8 weide extends i'rom the? weter embeddeti in seid I shut-"downs of t cooiefi oor to the top or the regeneraiors so es to prevent tile gases iioW ing beyond seeii vertical title. The buiir''oeed 2O sise serves to iimit 'the size of the sieg pocket so 'that the gases passing thererrirougfi Wiii not room to expend to eey appreciable ext-ent. e. secomi buiriieefi 221 mey be fomit et ter cooled 'Floor of 'the sieg pocketv 8 on e iiie with the side Waii ot the furnace W eti considered. necessary or lreo'ie.

The space below the cooieti tiooris shut oii' from the regerieretors so that the gases will riot escepeimfier oor, A

With this improved form el? si by rfa/eil seid the velocity of the' gases Wiii not *se lessened to any epprecieisie emouet'iri pessitig riser 'efiii throue'ii, er@ Writer cooieri. quieiriv cooideposits of terieie, thusreueing the hes such rieposits, eed lso protecting Work. The deposits o'siegg beleg cooieci within the sieg eeorete 3ere"r'eet'A ed from fusing into lsoiir -irressrei `eredi cooie to sucia er. eirteet este oe rewriiiy removable during' the oreieery weekend Le iirriece, in 'this wey avoiding end preventing deieys ii'operet-- ing the furnace. iiiie advantages of my. irrite' epprecieteli'ioy those siriiieti in the. j

Ai'fiiiiie orriy one spec of 'the 'nvr' tion hes'iieen described eed shows, ses iii: veritiere is not Limited ehereto, siriee re roue modifications rosy be mede Wit-hoer riep-srt;- ing from the scope o" invention es'e iirieci in the epperied eieims.

1 A regenerative uriiece heroes eretor eoririectefci therewitiiai y between the heerth or seifi ferri, '1 regeneretor, en eieveteci above i ire io'rleir riferi wiii me e .tom or seid sieg pocket, erro cooling meses f2. A regenerative tirneee kering e regenerate-r comieetefi tiiereri e sieg pocket 'between heert'h of seid *furnace seid regeneretor7 en eiereteei 'toer eiov-e the tom of saisi sieg pocket forming en air spese seid tioor, emi eooiiii; rieti ir; seid Hoor, eed meer@ for ceusirig circuietioii of eV cooling medium in seid cooiiiig means to eooisieg deposited ori sardi ery l f/; "i regenerative furnace hearth, e regeneretor connect/eri theres/bh, e sieg pocket between seid hearth sind seid regeneretor, e piuraiity. of piers' extending upwardly from the bottom of ssii@ sieg i oeietenti 'an veier/ated floor carried by p1 rs., seid ioor mciudmg e. ioor piete, water ooiri tubes mounteri on seid piatte ses e,

the outer eed o the Wemeses eisiioeciM Seite nectmg said slag refractory covering for said tubes, and means for circulating water through said tubes.

4f. A regenerative 'furnace having a hearth, a regenerator connected therewith, a slag pocket between said hearth and said regenerator, a plurality of piers extending upwardly from the bottom of said slag pocket and an elevated oor carried by said piers, said iioor including a floor plate supported on said piers, a covering of loose refractory material on said plate and water cooled pipes embedded in said loose refractory material, and means for circulating wat-er through said pipes.

5. A regenerative furnace ot' the openhearth type, having gas and air ports at each end of the hearth of said furnace, slag pockets formed below said ports, gas and air fiues connecting said pockets with their respective air `and gas ports, gas and air regenerators on one side oi' said slag pockets.` means connecting said slag pockets and said regenerators, and an elevated Hoor above the bottom of said slag pockets` cooling means embedded in said elevated oor, and means for circulating a cooling medium through said cooling means to lessen the temperature of solids deposited thereon by the gases flowing through the slag pockets.

6. A regenerative furnace of the openhearth type, having gas and air ports at each end ot' the hearth of said furnace, slag pockets formed belovl7 said ports, lues conpoclrets with their respective air and gas ports, gas and air regenerators at one side of said slag pockets, means connecting said slag pockets and said regenerators, a bulkhead formed in the gas slag pocket at a point just beyond the iiue connecting said gas slag pocket with said gas port, a plurality of piers forming vertical supports from the bottom of the poci ets, a plate member supported on said vertical supports. an intermediate layer of loose refractory material on said plate, a plurality of water circulating' tubes embedded in said refractory material, and a covering over said loose refractory material.

7. A slag pocket Hoor spaced above the bottom of said pocket comprising a supporting structure, a layer of loose refractory material, a series ot lengthwise separated pipes embedded in said refractory material, and means connected to said pipes for circulating a cooling medium therethrough.

8. The combination with a regenerative open-hearth furnace of a slag pocket having a plurality ot' piers forming vertical sup` ports extending upwardly from the bottom ot said slag pocket` and ar. elevated floor on said sul'iports. said tloor comprirlng a plate .member, an intermedia-te layer of finely divided refractory material on said plate, a plurality of Water circulating tubes embedded in said refractory material, a refractory covering over said finely divided refractory material, and means for supplying Water to said pipes.

9. The combination With a regenerative open-hearth furnace of a slag pocket having a bottom and a floor of refractory material spaced above said bottom, said door having a series of water cooled pipes embedded in said yrefractory material, and means for circulating Water through said pipes.

'ln testimony whereof I have hereunto set my hand.

SAlVUEL G. WORTON.

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