US1210364A - Boiler and other furnace. - Google Patents

Description

I. HEAGAN.

sonia AND omis FunNAcE.

APPLICATION FILED MAY 5. 1916. 1,210,364. Patented D00. 26, 1916.

2 SHETS SHET l.

J. REAGAN.

BOILER AND 01111211 FURNACE.

APPLICATION FILED MAY 5.

'm' Patented Deo. 26,1916.

2 SHEETS-SHEET 2- if." .Th uppermost ste 50 head block.-

UNITED STATES JAMES REAGAN, F PHILADELPHIA, PENNSYLVANIA.

noILEn AND OTHER FURNACE.

Specification of Letters Patent.

Patented Dec. ze, 1916.

Application led May I 1916. Serial No. 95,706.

T 0 all whom it may concern:

Be it known that I, J Arms Renens, citizen of the United States, residing at Philadelphia, in the county of Philadelphia and 5 State of Pennsylvania, have invented cel tain new and useful Improvements in Boiler and other Furnaces, of which the following is n specification.

My invention relates to furnaces of the type shown in my Patent #1,171,803, dated February 15, 1916, and characterized by the inclusion of a hopper, a fuel feeder, a stationary head block, forming the bottom of a coking zone, a grate having reciprocatory stepped hollow bars, a rest grate, and means for removing ashes from the furnace, The Same type of furnace is shown in another up )licatlon of even date herewith.

he present improvements involve the construction of the upper end of the grate bars und the contiguous head block; the construction of the lowermost sections of the grate bars; the rest rate, and means for preventing the accumu ation of clinlcer.

In the drawings-Figure l represents a vertical Section of the grate; Figs. 2 and 3 represent upper and lower portions of the grate; Fig. -l is a view of the perforated steam supply pipes appearing in Fig. 1; Fig. 5 is a perspective vlew showing the upper and lower parts of one of the grate bars with the stepped plates removed; Fig. 6 represents sections of the upper stepped plate of the grate; and Figs. 7 and S'represent sections of the lower end of the grate.

The grabe bars A are arranged parallel and are 'composed of perforated stepped secltions a, as in my Previous2 construction. They 4are adapted to reciprocate independently, and toj,receive coked fuel from the Stetloxmry heed block B under which their upper ends exlzelid.l C is the bottom of the fuel ho per fromwhich the fuel is expelled by the el feeder .(not shown). f a' of each of the etebars is rn'ade o "e other steps', and its ront Wall a is perforated, the perforations bein designated a'Q ,The -u er wall is imper crate. 4The is so placed as toalway's form with the upper end of the grate bar ather step a asthe grate boris reciprocated, but never entirely disappears, as ris the case in the construction shown in my Acom anion application. In consequence of this arrangement,

rester heightA than other steps `of t e fur-A Whicli isnarrowed and widened. v has,4

hepetofor4 constructed, and provided lt'gyith w ithe sheet of fuel slowly impelled over the head block B by the fuel feeder, finds temporary lodgment on the step a, from which 1U The increments of dis- A it is partially dislodged at each reciprocation of the grate. lodged fuel drop past the openings a, and then find their way over the grate in the same manner as in my earlier construction. I have by experimentation found that it is desirable when some kinds of fuel are employed, and especially if the fuel be wet, to cause a leading increment thereof to separate or draw away from a following increment, in order that the radiant heat may gain access to and affect a large number of the fuel particles, and this, I have found, may be well accomplished by the means just described. It will be observed, that the sheet offuel passing over the step c4, anddown over the next step a, of the grate bar, is not bodily agitated, but only, separated by gravity as to the leading and following incrementsY above Inentloned. I `urthermore, as the feedin of the sheet of fuel is extremely slow, t e opening up of the interstices is very gradual until the time arrives for the gravitativeA separation, which `causes a transverse rift to appear, thereby 'subjecting more of the particles to the radiant heat. More air is required etthis stage of the operation,l and this is su plied through openings as. I find that t e separation, without a mass disturbance of the fuel, is remarkably effective in securing a perfect combustion and the consequent elimination of smoke which, in4 many paces, is due to an `over-supply of the gaseous products of destructive distillation and` a relatively small supply of air. The height4 of the uppermost step of the grate secinfmV is to be determined by theeha-racter an condition of the fuel, but I have made the height six inches. The normal width of the step at4 may be about three and one-half:

` inches, and this width'isincreasedby fro one-half Aan inch to three and onmlf inches when the rete bar reeiprocates. l

rate sections' are" abol'xt oneand one-half inies high, and about two inches Wide. t

The rest grate I have narrowdrlldl" have dispensed with the slots tllerecif,v round ho s d which preventxthe pa-ssagqof v unconsumedmertieles of fuel. A steam pipe d jdeliveps steam to the space below and furi, 'f'

through the rest grate, and the steam. bosides aetinpr to broalf up rlinkers. tends to keep the openings clear. The rest grate protected by a water beam ll, snob as is described in my eompanion application.

(')ther steam pipes F, perforated at f, 'led from a common supply pipe Il", deliver steam laterally into the hollow grate bars A. This steam flows, not only through the open-v ings a at the tops of the grate bars, l ut over the edges el ofthe trough-like portions of said bars, and up between the bars, there being spaces e there for the exit olt air under forced draft, as shown at e in my ending application, Serial #$28,742. filed ay 17, 1915. The steam, therefore, uniN formly distributed to all parts of the grate areal` the result beingl the breaking up of tbc clinkers throughout that `area by tht` cooling effect of the steam whieb is ol" a much lower temperature than the lrangible elinkei's.

The grate bars are each provided u ilh a romovahle aslnpushing plate (t. perforated at g', the upper edge g olf which eonstitntes one half of the top surface of the lowermost step of the bar, the otherl half of the surface being formed by a projecting perfo rated flange g2 of a grate section g, that has grooves g4 in its edge. The plate G is secured to the hollow grate section by lugs gf', that engage flanges g/Fon said hollow grate section. The steam pipes F have caps f slotted at f2 for the emission of steam toward the openings g', the object being to supply steam to this part of the grate, :mst as it is supplied to the other portions thereof for the purpose of breaking up the elinker. H is an Lbeam covered by a pro'- tecting plate J supporting the rest grate l) at one edge, the other edge being supportml bythe waterbeam E.

Having thus fully dcseribedY my invention what I claim is 1. The combination with a stepped recio roeatory grate, of a stationary head block disposed at the bottom of a coking chamber,

the .upper step of the grate being of greater height than the other steps, and the grate actuating mechanism being so adjustedas to always expose a fuel supporting surface of the upper step.

it. 'lhe combination with a stepped reciproi-.atory grato having alternately acting sections, ol a stationary head block disposed at the bottom ol" the coking chamber, the upper step of the grato being of greater bright than the other steps, and the grate artuating;r mechanism being so adjusted as to alwaysI expose a fuel sul'iporting surface of the upper step.

5l. The combinatioli of an inclined reciprocating grate, a rest grate situated at the lower end of said inclined grate and adapted to unobstructively discharge material rearward, the lower end of the-inclined lfrate being perforated, vertically7 disposed and shaped to act as an ash pusher.

l. A lower grate scf-.tion Comprising two parts1 one of which is a steiiped plate having a perforated flange and the other is a. vcr-- tical perforated plate fitting said flange.

I. The rombination with a grate baring hollow spared and perforated bars, of steam .supply pipe-s adapted to supply steam to the prrl'orations in and the spares between said bars and means for supplying air under pressure to said bars.

(3. The combination with the vertically ar ranged perforated lower section of a grate constituting an ash pusher, oi a steam pipe *for delivering steam to and through the perforations, and a rest grate disposed adjacent said lower sections.

7. A foot grate in combination with a Supportingbeam, a protecting plate for said beam7 and a water beam supporting an edge of said foot grate.

S. The combination with a furnace, of an inclined stepped grate, the uppermost step being of l rreater height than the other steps, means for uniformly supplying steam to all parts of the grate area, a rest grate, a perforated plate constituting 'an ash pusher disposed at the lower end of the grate and means .for supplying steam through ,the ash pusher.

In testimony whereof I my signature 100 in preseneeof a witness.

JAMES Eriadan.-

Witness: y

J. WV. Cassmy.

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