US1733582A - Cooling apparatus - Google Patents

Description

Oct. 29, 1929. G. E. cox

' COOLING ApPARATUs Filed April 25, 1925 IN V EN TOR.

x. O C EL. E O E G ATTORNEY' Patented Oct. 29, 192,9

UNITED STATES GEORGE E. coX,`oF NIAGARA FALLS, NEW YonIIQAssIGNoR To AMERICAN CYANAMID COMPANY, oF NEW YORK, N. Y., A CORPORATION 0F MAINE COOLING APPARATUS `Appiication mea April 25, 1925. serial No.725,7e4`.

This invention relates t-o cooling apparatus,

more particularly to means for cooling hot materials.. such from the kiln. y

It is common practice to burn lime in inclined rotary kilns by continuously introducas burnt lime discharged in the upper end thereof, limestone Which has been crushed to the desired size, say egg. The limestone in moving towards the lower end of the kiln is'subjected yto the temperature of hot gases ofcombustion ofpowdered coal, oil or gas,` and is thus converted rinto burnt lime, which leaves the kiln at a red heat. Before using, 'storing or shipping the same it is necessary to cool the hot burnt lime and thisWas generally accomplished by tumbling' it in a rotating, inclined metal drum which Was cooled by an` air blast.

For certainpurposes, such as in the production of calcium carbide' by the interaction of lime and coke', it is highly desirablethat the lime be in the'forin of lumps and that the amount of lines v be reduced to a minimum. The reason for this is that in the electric furnace used for making the carbide the fines are, to a large extent, yblown out and lost, instead of reacting to form thecarbide. In the old method of cooling the hot burnt lime by tumbling, alarge amount of y'fines Was formed, constituting a serious loss of material. W ,f i

My invention is intended to obviate this difficulty, it being among the objectsy thereof rto provide a method ofk cooling burnt lime ,and other materials so as 'topreveiit the formation of an excessive amount of fines. y yIt is a further objectl of mypinvention to provide an apparatus for cooling theburnt lime which shall operate substantiallycontinuously. y

In practicinglmy invention, kI provide a metal surface over which the hot, burnt lime is caused toA passin such a manner as to minimize thetendency thereof to produce lines. This is accomplished by pushing the lime overthesurface byy means ot conveyor members ysecured `to an endless chain, and avoiding excessive rolling or tumbling of the ypieces of linie as in the old drumy type of cooler.

rIhe 'surface ofthe metal plate' is kept cool by the circulation of Water through a plurality of compartments formed under the plate andthe amount of cooling is capable of close regulation to give uniformconditions. For convenience I utilize an I-beam which is placed ina horizontal position, and I form the Water compartments in the portion below the web by Welding suitable pieces thereto. The'conveyormeinbers fixed on an endless chain are adapted tofunctionin the through portion above the Web. Guiding means are provided to prevent lime from falling over the sides of the conveyor'structure,

which restsfon rollers Which allow for expansion and contraction due 'to temperature changes and avoid any strains on,V the structure. f

In the accoinpanyingdrawing constituting a part hereof, and in Which like reference characters indicate like parts:

-Fig.1-is a fragmentary plan view ofmy cooling apparatus forhot lime: j f` F ig. 2 is `a fragmentary sider 'elevational View thereofz f i f- Fig'. 3 'is a vertical, cross-sectional View taken along the line III-IIIof'Fig. 2, and Fig. 4L is a vertical, cross-sectional View taken along the line IV-IV of'Fig. 2.,'y

7 I provide VanWI-beaml, which is placed in a horizontaly position and has ymetal plates2` and Weldedor otherwise secured along the sides thereof, enclosing a trough shapedspace in Which the conveyor membersfunction to move the hotflime or other material lto be f i cooled over thesurface of the' web of the I- beam. Across ther lower side of the beam is secured a platee preferably by Welding, the said plate forming with the web and the lower portion of the sides of the I-beam,`-acliamber for the circulation rof Water. The chamber is divided rinto a'numberr of compartments y9,`in.alignment with pla-tes 6, and permanentkly secured in concrete foundations 10.

opening 17 at a point above the top of theV conveyor and discharging intorthe pipe 18 connected tothe main outlet pipe 19. A valve 2O is interposed'between pipe'15 and pipe 18 in order to by-pass the free dischargeopenf ing 17, if so desired. Conveyor members 21,

- oiC any desired type, operating in the space above the web of the sbeam are connected to im endless disinfect shown., asis commonin conveyorsof this general; type. Y Y In pr.a ct ice,the conveyor members 21 are f set. inmot-ion by the actuation ofA achain, and

hot: Aburnt lime or other material from a rotaryl kilny or othersource is continuously feelin/to thepa'th of. theco'nveyor members., .which push the salmefover the sur'ace'oi' the web of the I-beam, which is. cooled by the circulationof water/in the compartments be- Y low. By reason of therelatively small coin- .partnientsthe temperature of the web is kept ijairlyv constantandI but slightly above the temperature of theincoming water, and the provision ofi airee discharge opening y .17assuresa consjtant circulation ot' water tions in the coolen at: all times.

at apredetermined rate and prevents the' stagnation or obstructionofthe owofgwater therethrough, thus giving uniform condi- Mounting the structureV on rollers; prevents any undue strain from being imposed upon the apparatus permitting the apparatus to move freely upon changes in dimensions due to expansion or; contraction and allows the conveyor-cooler toA be made of a relatively great length. Y

It will'benotedthat the conveyor trough is of extremely simple'construction; consisting 'essentially Vot standard shapesgwhich maybe Yreadily obtained on theA open market `and secu-redtogether by welding or in otherv Well-known.mannery Ordinary piping and yfittings' areused in the construction7 not only rendering 'the' sameinerpensive, lout making replacements of; wornI or damaged parts a simpleand.y inexpensive procedure,v In my n eWfccoling apparatus,4v because of the short compartments and the`v method of control of 1 Y thenlQW of' water, Icooling.' is very eliective,

and-sincethereis lessitumbling action on vthe burnt lijmeythe, amount of rines produced is small.' Furthermore,V this apparatus con biiies, the Afunctions of a conveyor for the Vmaterial ,With a cooler.

Although. I. have-.described vthe operation Vvof my apparatus .for the cooling of burnt linie, yitis apparentlthat other materials of a similar character or even having entirely diereiit characteristics maybe cooledcthcra in. The details of construction, as well as the arrangement of the parts of the apparatus may be altered. For instance, instead of mounting the apparatus upon rollers, which are adapted to move and thus to compensate for theVV expansion andl contraction of the aplraratus uponichanges ini temperature thereoil may firmly secure the same to a foundation or l may securethe VAsame at soine points and mount it uponrollers or similarv structures at other points.

In Fig. 1 of the drawing I have shown the I-beain made up of a plurality of short l-beamscut diagonally and secured together. This construction is desirable for the reason that. uthadagorial joint l avoid any .danser of -the.conveyor members catching 4on. the` ad,- joining edges; it they are not inperfectali-ne.- inent or one is slightly higher.. HOWever, this is `not essential as .the joint may loeI made transversely of. thel I-heam.. It desireml may, place battles.4 only 'partiallyy across the water chamber. insteadf ofydividing the same int-o, independent water, VTcolnpartments or, I

ay place within the compartments; ammi,- berk ot such` banales to aid .in the positive. cir.n culation of water. Thesev andotherfchanges may be made in my` invention, the scopeof which is defined. in the claim. appended hereto. Y

YW'hat I-claim is: y c 1. Cooling. apparatus comprising a1 hollow stationary Vbase, having: 11p-standing sides forming a trough .fori receivingrmaterial' to be cooled vand along which saidgmaterial mayV be:conveyed,t means forV` passing.E a cooling liquid through thev hollowj portionofj said basel and, means for, maintaininga. constant head-:ofy the cooling liquid above thehollow base.. Y I Y y.

2', Cooling:y apparatus comprisingaf subf stantially4r horizontal Isbleam, .and a, plate .welded-to the lower side edgesthereofto ,provide a chambery for cooling. liquid, theupper sides ,of the. I-beam forming. ak trough [or channel for the material to be cooled, and along which the lmaterial mayybefconveyed.

3..,Cooling apparatus comprising a'. substantiallf. horizontal .I-beam, a plate 4 Welded to `the lower sidegedgesthereof to .provider a Vchamber for cooling liquid, and battles Welded in said chamber forming a ,plurality of compartinents,k the` upper, sides of the, I-.beam orminga troughadapted, to receive material to be cooled and along which said material may be.conyeyed.-L Y

4.' Coolingl apparatus,` comprising a sub.- stantiallyhorizontal I-bea-in made 'of :a plus.v

along`E .a diagonal line, :ai plate fastenedtofthe lower side edges :ofthe I-beain to'providea Y chamber `for cooling liquid, and battles welded in said Achamber forming 5 ap'luralityr ofcourpartmentsvrthe upperV sides of` said` I-,beam forming atrough forsreceiving material to Aloe lralityloiz sections.jeinedgtogetherf at theirends V Cil In testimony whereof, I have hereunto' subscribed my name this 17th day of April, 1925.

GEORGE E. COX.

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