US1914991A - Ash disposal system - Google Patents

Description

June 20, 1933. T, CO LAN 1,9143% ASH DISPOSAL SYSTEM Filed April 22, 1929 2 Sheets-Sheet l Julie T. G. CQGHLAN ASH DISPOSAL SYSTEM Filed April 22, 1929 2 Sheets-Sheet 2 QINQLENTOR W m 6 M M w Patented June 20, 1933 i'ruo SATES PATENT OFFICE ASH DISPOSAL SYSTEH A lication filed April 22,

The invention relates to disposal systems for ash or slag from boiler furnaces or smelting furnaces; and it has for its object a novel combination of apparatus whereby this may be ex editiously and economically efi'ected throng the use solely of water as an advancing medium. A further object of the invention is to greatly increose the crcentege oil material that may be hon led with a given volume of vvuter.

Hereto'fore, it has been proposed to utilize pumps, or devices having more or less obstructed pussagevveys, in removing the Water-sluiced ash or like material; but this type of apparatus is short-lived and does not aiiord a setistectory solution of the problem oz? disposal, more especially'in connection with the operation of large power plants and smelting furnaces. In accordonce with the present invention, no moving ports ere utilided for this purpose; and in carrying out the some, the cell or slag to be removed is, preferably, first prepared in a condition i or reody sluicing by water and is fed thereby to the suction side of the rernovsl device This device is provided with.

e straight-sway through pessegevvey end is oper ted also by water which is combined 39 with the Weter-sluiced material and the mixfor final discharge, the enter eventually being separated irorn the deb, for example, when the some is delivered to s. storage boo per or the like from which the ssh may be further distributed, as by being conveyed therefrom in suiteble csrs. I i

The nature. oi the invention, however, will best be understood when described in connection tbe sccompenying drawings, in which:

- Fig. 3. illustrates in elevation and port section the novel disposal system es epplied to a, boiler furnace of tbe non-slagging type.

Fig, 2 is n siar view of the application oi the novel disposal system to'a slagging type furnsce, f

Fig. 3 is e 1011 itudinal section through the removal mem r which afiords, also, additional volumes of the sluicing medium.

ture propelled into n closed disposal line- 1929. Serial No. 858,941.

Fig. 4 is a part transverse section and end elevation thereof.

Referring to the drawings, more particularly Fig. l, 10 designates one of a air of grinder rolls, located at the bottom 0 an ash-receiving ho per 11, end such as are preferably installbd in connection with nonslagging boiler furnaces from the grate of which ash is discharged, the i purpose of said rolls being to suiiiciently crush or .dis integratethe solid materiel so that it may readily flow along a sluicevvoy or launder 12 located beneath said grinder apparatus. Water, which is introduced through the pipe 13 into the sluicevvey' 12, is utilized as the medium for advancing or accelerating the disintegrated ash along the same until it is caught up at the suction side of the removel member 1% which. provides sufiicient head to force the sluiced material to the point of m final distribution. This, for example, may consist of a bin or hopper 15 to which the discharge conduit iii, constituting a closed disposal line from the removal member 14, h discliar es the mixture oi Water and disintegrate ash. An overflow pipe 17 is provided in connection with the bin 15 for removal of the sur lus writer; end the bin mey be elevated suiiiciently to discharge into suiteble cors 18 passing thereunder and serving to convey the solid materiel therefrom.

-lbe removal inenibe'r itseli is more particularly shown in 5 and and comprises e casing having on inlet chamber or suction portion 29 into vvliicli the liquid ve- 8b hicle and disintegreted material is received, and an outlet or trusto-conicel portion 21 from which it is disciisr -ed under pressure, the said device being included in the system, (A es indicated in Fig. 2 between the sluicevvsy l2 and the disposal line 16.

in order to provide the additional supply of ii uid vehicle for enhancing the flow and to afiord suificient suction for drawing the initial mixture through the device and discharging the same under pressure to sccelcrate and propel it into said conduit 16, the inlet or suction portion 20 is surrounded by an annular chamber 22 to which water is supplied through an inlet pipe23 connected therewith and the material.

. and substantially to the under sufiicient head. In addition, a series of discharge openings 24 are arranged circularly at the outlet end of the chamber 22 and are designed to receive nozzle members 25 screwed therein, as indicated. The latter are directed at an angle to the common longitudinal axis of the coaxial inlet and outlet portions 20 and 21 so that the. various streams or jets issuing therefrom will converge to a common point substantially in the said axis and will form a conical shell of water issuing from the annular chamber 22. This serves to set up an efiective suction or vacuum inthe chamber portion 20 to advance the mixture of water and contained material through said ortions 20 and 21 and also to establish sufcient pressure to force the same outwardly from the chamber 21 against a reasonable head such as may prevail in the disposal line 16, although it is to be understood that in. some instances the material may merely be advanced against a slight head and projected over a considerable distance for various purposes, such as filling, etc. It is to be noted, furthermore, that the angle at which these jets are discharged must be in such relation to the common longitudinal axis of the chambers 20 and 21 as to provide for the convergence oi these jets at a point suificiently far removed from the former chamber as to prevent any backing-up of I'have found that an angle of approximately 22 aiiords a suitable jet for the purpose.

By the foregoing expedient, not only is appreciable suction provided for advancing the sluicing vehicle and disintegrated material and for forcing the same against a substantial head, but the medium employed for efiecting this suction, to wit: water, further serves to enhance the flow effect; and greatly increased proportions of thesolids may be handled than heretofore, amounting generally approximately to thirt per cent.

It has been found desirable, a so, to provide means to protect the nozzles 25 against the action of the rapidl' -moving ash particles; and to this end, t e outer portion of the inlet chamber may be counterbored to form a seat 26 into which is fitted a hollow c lindrical guard piece 27 extending the amber somewhat beyond its natural end mouth of the said nozzles. As this guard becomes worn, it can readily be replaced; and it effectively protects the nozzles which, of course, are more difiicult and more expensive to replace. A cleanout valve 28 may, also, with the annular chem r 22.

As indicated in Fig. 2, the novel system is applicable also to the removal of other types of ash, for example, slag from a slagboiler furnace, or a smelting ng type of grnace, as the iiurnace 30 from which slag .be connected.

is drawn through the spout 31. In this embodiment, the slag is received through a funnel opening 32 which delivers the same .into a sluicing chamber33 through which water is designed to be discharged axially b means of a pipe or nozzle 34. The liq- -u1d slag, of course, cannot be disinte rated mechamcally as in the case of solid as but the action of the water stream thereon effects a spontaneous disintegration of the material so that it is readily advanced and propelled by the removal member 35 which is similar to the device 14 of the previously described embodiment and is connected with the sluicing chamber 33 in this instance.

I claim:

1. In an ash disposal system provided with a sluiceway and a; closed disposal line: means for introducing water to the sluiceway for advancing the ash therethrough, a removal member comprising a casing having an unobstructed inlet chamber in communication with the sluiceway and a coaxial unobstructed discharge chamber for the mixture of ash and water and communicating directly with the inlet chamber, chamber surrounding the inlet chamber and having an inlet for Water thereto, circularly dis osed discharge nozzles at the outer end 0 the annular chamber and through which water is projected at an angle to converge the streams to a point substantially beyond the outlet of the inlet chamber to provide suction in the inlet chamber and accelerate and propel the said mixture through the discharge chamber into the disposal line, and a hollow cylindrical member set into the inlet chamber to extend beyond the same for protecting the nozzles against ash issuing from said chamber under the suction developed by the nozzles.

2. In an ash disposal system provided with a sluiceway and a closed disposal line: means for introducing water to the sluiceway for advancing the ash therethrough, a removal member comprising a casing having an unobstructed inlet chamber in communication with the sluiceway and a coaxial 1m obstructed discharge chamber for the mixture of ash and water and communicating Y directly with the inlet chamber, an annular chamber surrounding the inlet chamber and having an inlet for water thereto, circularly disposed dischar e nozzles at the outer end of the annular c amber and through which water is projected at an angle to converge the streams to a point substantially beyond the outlet of the inlet chamber to provide suction in the inlet chamber and accelerate and propel the sai mixture throu h the discharge chamber into the dispose line, and a sleeve fitting within and shouldering a ainst a counter-bored section of the inlet ly to the ends the nozzles for protectingamber to extend said chamber substantial:

an annular them against ash issuing from the said inlet chamber under the suction developed by the said nozzles.

3. In a disposal system a removal member comprising a casing having a substantially unobstructed throu h passageway and the inlet portion thereo affording a suction chamber to receive the matter to be disposed of, a single ring of individual nozzles about the passageway at the far end of the suction chamber and terminating substantially at said far end to maintain substantially the bore of the passageway, said nozzles being inclined at an angle of approximately 22 to the longitudinal axis of the passageway to direct individual separated streams of water therein converging substantially at a pointin said axis removed from the outlet of the suction chamber, and

a manifold about the suction chamber to supply water to all of the said nozzles at substantially the same pressure.

4. In a disposal system: a removal member comprising a casing having a substantially unobstructed through passageway and the inlet portion thereof affording a suction chamber to receive the matter to be disposed of, a single ring of individual nozzles about the passageway at the far end of the suction chamber and converging toward the discharge end, said nozzles terminating sub-

Images