US1098059A - Gas-producer. - Google Patents

Description

H. F. SMITH. GAS PRODUCER. APPLICATION FILED SEPT. 20,1912.

Patented May 26, 19'14.

4 SHEETS-SHEET l.

'H. F. SMITH.

' GAS PRODUCER. APPLIGATION FILED sEPT.2o,1912.

Patented May 26, '1914 4 SHEETS-SHEET 2.

UUUUUUUUUUUUUUULIUL WITIYESSES Patented May 26, 1914.

4 SHEETS-SHEET 3.

N I NTOR* Altomejul` H. F. SMITH. GAS PRODUCER."

. APPLIOATION FILED SEPT. 2o, 1912..

. Patented May 26, 1914.

4 SHEETS-SHEET 4.

Z I/EJYTOR 06174414 LS/5 215g? up the coke lduring the HARRY FORD SMITH, 0F LEXINGTON, OHIO.

GAS-PRODUCER.

incenso.

Sp eccation of Letters Patent.

Patented May 26, 1914.

Application led September 20, 1912. Serial No. 721,417.

To (177 whom it may concern Be it known that I, HARRY F. SMITH, a citizen of the United States, residing at Lexington, in the county of Richland and State of Ohio, have invented certainnew and useful Improvements in Gas Producers, of which the following is a speciiication.

My invention. relates to an improvement in gas producers, and the object is to provideA a rectangular casing having a central gas outlet extending in a direction of the greatest dimensions of the casing, with fuel magazines located laterally on either side of the gas outlet, and downwardly converging mechanically operated grates extending on either side parallel to the gas outlet.

The grate bars are pivoted at one end and that the bars arethrown alternately up and back by the action are actuatedby cams, so

of the cams. In this manner the gratebars act as stokers to force the .fuel radially inward toward the center producing an underfeed effect onnthe fuel, thereby largely destroying the tar, and also serving to break and eliminating the -need of hand firing. ,Vl/'hen' the bars move inward theI fuel is forced ahead of the barstoward the center of the producer, andvwhen the bars return, a space is formed between the bars and the fuel bed, which space is partially iilled ,by the fresh fuel from `alcove sliding down along the lining. By this method or process fresh fuel is keptfeeding downward onto the lateral grato sections and the fuel is ignitedand partially coked when it is forced inward toward the center of the incandescent fuel bed, and .the fresh coal comes into combustion rst on these OfratesMand any coke that may be formed into small pieces by the alternate movements of the lateral grate bars. Furthermore, in this manner an underfeed effect is produced whereby a large amountof the tar and volatile matter in the coal is consumed. y

The invention consists of certain novel features of construction and combinations of parts which will be hereinafter set forth and more particularly pointed out in the claims.

drawings Figure l' In the accompanying is a top yplan view, with a .portion of the casing broken away to show the interior construction: Fig. 2 cal sectional View' through the ash pits; Fig. 3 is an end View; Figs. 4 and 5 are eninitial combustion is broken upv to the brick .through the wall `s a longitudinal verm-,

respective pits 4 can lloarged detail sectional views of the vgrate ars.

A represents the rectangular casing ofthe producer, and l is the top. The casing is mounted on the wall 2 of the ash pitsvB, B..

Located through the center of the 4producer and mounted on suitable supports orA rails .4

'are a series of sections of the usual or ordinary rocking gratos l5, 5. Extending longitudinally of the producer are two shafts 6, 6 which are located on each side of the shaking grate vsections 5. Mounted on the shafts 6 are grate bars 7,. 7 which extend along the side wallsof the producer, and the upper ends of the bars received in a recessjS formed in the walls of the casing, butV the bars remain in a.p0sition so thattheir uppermost ends are in a line with the wall of the producer. Mounted in rear of the grate bars 7 on each side of thel producer is a cam shaft 9 upon which shaft cams` are mounted.k

The cams are so located on each shaft that they will' bebrought into engagement. with tliegrate bars for causing the grate bars ony each side of the producer to be alternately operated. U-shaped brackets lO'vare formed on the grate bars 7, andl extend over the shafts 6 for supporting the bars on the shafts. A rack `vbar 11 Iis provided. for. fastening the grate bars to the shafts 6 against lateralmovement.

. The ash pits are arrangedin sections, that is for each section of grates an independent ash pit is formed. Connecting the walls 2 are a plurality of partitions 12 upon which are mounted 'the rails 4 for supporting the ends of the grate sections 5. The `walls of the ash pits taper downward to an openingv 13 formed in the bottom of the pits through which the ash can he discharged. The upper end ormouth of the ash pits are of greater width than the gratos 5 so that any ash passing through the gratos 7 4will enter the pits. At the ends of the grates a steel plate C is located which extends upwardly lining D Aof the producer for completely separating the ash pits into separate divisions.

Extending longitudinally of the producer is a blast pipe E to which is connected a pipe G for each ash pit. AThe vpipe Gextends 2 aii`d `into,-the pit, and a valve 14 is provided for each pipe Gr so that the-amount of air to be delivered to the be regulated tov suit the requirements. In some instances one grate vsection will require more air blast than angrasped by the operator. rlhe valve or hood- 14 which is applied to each branch pipe G prevents any aslrfrom falling into the pipe of the opening in the pipe.-

the ro iso.

" vent 'the discharge of air' through the bot- A magazines 21, 21.

the

G when the hood is closed or in a raised position, the valve being preferably constructed cone-shaped and fittingA well over the end The ends 17 of a Pitot tube 18 extend into the branch pipes G, and the reading of the tubeis indicated .by a gage H. lOne gage and tubeis fitted to each branch blast pipe andy by reading the various gages it is possi#l ble to determine when thelrate of flowroff' blast to each pipe is' the sameas that to every other section. If it'is found that one section is taking more air than the restas would be indicated by a higher reading'on 16 until the blast't'o each sectionis exactly the same. Dampers 19 are provided for each opening 13 of the ash pits B to pretom of the' ash pits. A U-shap'edhollow trough 2O extends the length of the producer for forming an outlet for the gas, and located on each side of the trough are lateral fuel The fresh fuel is fed from the magazines down onto the downwardly converging grate bars 7, from which it is fed to the center of the reducer onto the shaking grate sections 5, a'.4 er the fuel has been first combusted on grate bars 7, and any coke that may be formed during the 'initial combustion is broken up into small pieces 'by the alternate motions ofthe lateral grate bars. 7. The grate bars 7 can be made as wide or narrow as the character of the fuel would seemto require. The bars are alternately oscillated by the cams causing the grate bars to act as stokers to force the fuel ward the center and producing an underfeed effect on the 'fuel thereby largely destroyin the tar, and also breaking up the coke an eliminating the' need for hand firing. It has-been found unnecessary to barthe fire as the fuel. settles regularly and inapproxr mately the manner indicated; that is, the fresh fuel falling on the grate bars as they return to'their normal or rearmost position after forcin the fresh fuel inward after it has been initially combusted on the grate bars. With the aid of,Q the mechanically" agitated grate bars it isgpossible to extend principle tothe .largest size of prothls same ducer, and to lvavoid the production of tar.

fresh fuel on radially inward tothe foregoing and vto the compressed air cylinders.

It is to be noted that one of the chief difficulties has been from the diiiiculty encountered in keeping each. section lworking at its proper proportion of the load. It is impossible to keep the fuel bed conditions Vin all exactly the same, and-there is consequently a tendency for the load to shift from those sectionswhere the fuel is packed tightly toward those in which the fuel is loose and porous. The construction shown is important in providing practical means whereby this may be readily detected and controlled.

' I claim- 1. A gas p lpducer comprising a rectangular casing having a central gas outlet extending across the upper part of the producer in the direction `of its greatest dimensions, fuel magazines lcated laterally on either. side of the gas outlet, and downwardly converging mechanically operated grates extending Qn either sideparallel to the gas outlet.

gas producer comprising a rectangular casing having a central gas outlet extendin g across the upper part of the producer in the direction of its greatest dimensions, fuel magazines located laterally on'V either side of thegas outlet, grate barsadapted to receive the fresh fuelV from the magazines, and means for oscillating the grate bars for causing them to force the initially combusted fuel toward the4 center of the producer on their inward movement and to receive the their return movement.

3. A gas producer comprising a rectangula-r casing, tending across the upper part of the pro-` previously encountered in producers of very large unit size, and also in the operation of several'producer units in multiple,

having a 'central gas outlet exducer in the direction of its greatest dimension, .fuel magazines located laterally on either side of the gas outlet, downwardly converging mechanically operated grates ex tending on either side parallel to the gas outlet, and a separate ash pit for each grate section.

4. A gas producer comprising a rectangular casinghaving a central gas outlet extending across the upper part of the producer in the direction of its greatest dimension, fuel magazines located laterally on either side of the' gas outlet, downwardly converging mechanically operated grates extending on eitherside parallel to the gas outlet, a sep- Loewe@ lending across the upper part o the pro dauer: iii the direction of ite greatest dimension, uel magazines located laterally en either eide of the gas outlet, grate bers adapted to receive the Iresh fuel from be n'ievaznee means for osclletino the rete bars for causing them to force the initially combusted fuel toward the centei" of the producer on their imvel' movemenlJ and lo ieeeive the fresh fuel on their ietum movement, end e, separate ash pit ol each grate l section.

6. A gals producer comprising e rectanguler casing having e centisal gee outlet exlaending aci-oss the upper peril ducer in the diifeot-ion 0l' its geees; ai sion, fuel magazines loca-teal leeefily either side of the gee outlet, grate here edapeel to lceceive ille lesh megezine@5 means o oscillating the grate' bers; 'oi' causing them o 'force the iii' il?? combustefl fuel tovver the center of: lle j@ :y eluoer `oli their inward mevementenel izeeeeive die fresh ll'iuel ee their relzum move ment, a sapevate ash pi: ofeee grate eee tion, and means 'in each ash'ii: fors supply ing. enel regulating the blast 'of eil the 'grate section above said ash pi.

In testimony whereof l affix my signal-ure in the presence of two Witnesses.

HAE-RY FR@ SMETH.

Witnesses:

Geo. H. 'lRoUirJgk THoMAs C-13RET01Qu @epilee m? this paten may Yee obtainefl fier ve cents each, hy addressng the Gommlsscnef @i 'Eeee'eg Weshngtr, D.

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