US1291589A - Process for the combustion of gas. - Google Patents

Description

H, R, MAXON.

PROCESS FOR THE COMBUSHOI.l 0F GAS.

APPLICATION msnm/v1.15. 1918.

l ,29 l ,589 luened Jan. 14, 1919.

HARRY R. MAXON, OF MUNCIE, INDIANA.

PROCESS 'EOE TH COMBUSTION OF GAS.

met ,een

Application tiled March 16,1918.

lle itV known that. l, lltnun4 lt. Maxon'. a citizen of the `United States, residingr at ltluncie, in the county ot Delaware and State of Indiana, have invented certain ne and uset'ul Improvements in Processes for the (`oml ustion ot' (las. ol which the following is a specification.

lrior to this invention the most'. usual method of burningy tra.' l'or heating,T purposes has heen to niilY the gras with a certain proportion or air, insuliicient, lor pei-feet combustion, and `leed the mixture so l'ormed to a hui-ner aty the desired location where additional air `iupplied either from the, surrounding: atmosphere or thy injection to completely constitute the ifuel gas. 'l`he gras or air or hoth are injected under consideralole pressure and so discharged t'rom thel hurner, and as the mixture has to talt'e up l'roin the surrounding atmosphere sullieient air to complete the combustion ignition does not talee place directly at the orifice ol' the hurner hut, :it: a distance therefrom depending upon the pressure ol' the mixture und the access ol additional air. 'l'he length of Llie.ll:\|ne is governed hy the distance the mixture is'required to go het'ore puking up sullieient ait-to complete the comhustxion. lty has generally heen recognized that 'lor most, purposes a so-called slo\v la/,y llame is desirahle, to wit7 one which moves slowly` ignites directly at the nozzle oi the hurner, and immediately hurus throughout iu a lhroad com]aratively short` llaine. Veith this iu view the. efiort has heen made to t'eed to the hurner a mixture ol' air and comhustihle, ,L'as in the required proportions for economical and etlicient eonihustion `hy mixing' llhe, air und gas in the required proportions at some distance l'rom the hurner. injecting they gas as usual under eonsiderahle pressure, therehy causing a more or less complete mix ture and l'oreing the mixture to the burner. 'lhere is howe\'er always danger in such devices ot' the striking?. hack ot the flame through the hurne' and conduit which has heen mety with more or less success hy interposingr in the conduit leading to the hurner gauze or other material adapted to ohstruetl the Flow, and exerting sullicienl pressure to drive the mixture at,y a speed in excess of that. at which the combustion of the gas could travel backward l'rom the hurner. This is ohjeetiomihle, however. because of the high pressure neeessnry, and the incom- Speoieation of Letters Patent.

Patented Jan. ll/t, l19t 9.,

Serial No. 222,829.

plete mixture of the combustible gas and air. ln my improved process the eomhnstible gas and ai'r are introduced into a mixing device ati very lonl pressures, the air prefer-- ahly heing at atniosnherie pressure or less, and the lgas butt. slightly ahove atmospheric nressure. The mixture thus lormed is 'led hy the mixingr device, which may he in the. nature ol :i fan, through n large unoh strut-,ed conduit, by which the low pressure oll the mixture. is preserved to the hurner where it is horned, preferably without suhstnntial access ot' additional air.

A great, variety of apparatus may he employed for practising; my invention, but in the aet'ompanying drawingr l have shown a device suitable fonthe 'purpose and which l'ormsthe siil)ject-matter of my tro-pending application Serial No. 12115747, tiled (lctoher t). lttlt. ltelerriingr to thel drawiu i', Figure t is a t'ront elevation ot' a furnace having my invention applied thereto; and Figs. 2 and Il are side and front', elevations, respectively, ot` the mixing device used in conueotion therewith, Fig. l heing partly in section to hetter show the construction.

ln the specific device, shown in Fig'. 1 my invention is applied to a plurality ot' lurnaces, the furnace structure t hein; shown as ot' an ordinary type and provided with burners ."3 which are individually supplied with eomhustihle gas mixture from several lans ti. 'l` e construction of the furnace is such that here is no substantial supply of outside air. The lans. except. in the respects hereinafter pointed out. are ot usual or ordinary construction receiving their supplies ot gas and air ahoutv their axes and discharging: them,tangentially. The casing 8 is therefore l'ormed with a central opening at, one side to which is connected a 'neck 1;-5 ol large diameter. the outer end of which re eeives a large gas pipe 11 controlled by a hand valve 12. A valve l0 of a well known type surrounds the pipe 11 and is adjustiahle thereon to regulate the supply of nir to the fan. ln the construct-ion shown the air if.; taken directly into the fan casing from the atmosphere. though obviously, provided the air is not put, under teo much pressure. it; might be led through n conduit of considerable length and" if desired preliminnrily heated.

The gas as heretofore noted is introduced in large volume aty very low pressure and the same is true of the air. Partly because of Sti ".0 A process for the coillbustion of 'thelw pressure it is necassm'y to meclumimv pressue is uiiutziiueci and lie speed of How is suh uiieiy :is to prevent srikiug back. fit is thus admitted to (the furimcie Subsiiantiully zit the flujnzice prcsm'g cumpateiy mixed througinut so-hutwhen it is subjected to the'ignitou tempmuure of the :luuacei immediately is ignited througmut and burns with a broad lazy fzuue.

Icaim: f

gas

im 172mm@ which Consists in Suppiyiug gus und air to mixers, rguiatiugg the ,gms und uit to tim relative proportions required for complete combustion, mixing the gus und uit7 conduct ingithe resultant mixtureo a burner, burning the mixture, and uminziiuing the speed. of flow of the mixture at the lowest rute necessary to pi'veut buck firing.

In :i provexs for the cmuiiustiou 0i' gus Suppiyiug nii` :uid t0 a. mixei, thu form-vr :it u iow pi'essure und fue iu'tvr at substuutiziiiy atuiosphsvsic pi'essuz'e, ivgguiuiing Hic gais mui nii" tu Huf inia'fivu lu'upm'timis nu ture tu u bulum', burning the mixturvn und firing.

'HARY R. MAXN.

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