US1902920A - Burner for liquid or semiliquid fuel - Google Patents

Description

March 28, 1933.

R. w. TITMAS r AL BURNER FOR LIQUID OR SEMI-LIQUID FUEL V Filed Aug. 24, 1931 5 1 oils due to the fact Patented Mar. 28, 1933 UNITED STATES "PATENT vo1=i=1c1a:'

REGINALD w. TITMAS, or LoNnoN, ENGLAND, A1\TD SPANISH HONDURAS, ASSIGNORS TO TITMAS COMPANY, INc.,, LOUISIANA, A coRroaArIoN or. LOUISIANA ROBERT s. IIIcK'IsInoF LA GEIBA,

BURNER FOR LIQUID OR SEMILIQUID FUEL Application filed August 24, 1931. Serial No. 559,084.

This invention relates'to burners for liquid or semi-liquid fuels such as are used inoil refineries .and similar plants where very heavy fuels of-high viscosity and free carbon content amused, and wherein the fuel is atomized by steam, gas or air'after deliv ery through the burner outlet. My invention an improvement on the type of burner shown in the Titmas and Hickish Patent, No. 1,774,953, dated September 2, 1980. In the said patent, the burner has a valve in the end of thefuel passage of conical shape, rotatably mounted in a correspondingly shaped valve seat, the: axes ofthe cones'being coincident with the axis of the fuel pipe and there is also a means for projecting this valve forwardly for cleaning purposes. i

The present construction includes a rotatably mounted and transversely extending conical valve ofspecial construction mounted in a conical valve seat, together with a simplified cleaning device.

This form of burner is particularly adapted foruse in oil refineriesand similar plants for burning either low grade fuels, such as acidsludge, tank bottoms and residues of all kinds which-contain a very high carbon content and have veryhigh viscosities. Trouble has always been experienced in burning such that they form very heavy carbon deposits andin all the devices heretofore in use a'hardacarbon shell forms .at thetip .of the burner which nothing will remove without withdrawal of the burner from the furnace.

Due to the fact that in oil refineries the quality of the fuel is continually changing and fluctuations of oil pressure frequently occurand that gas is often used as a fuel oncethe stills have reachedtheir working temperature, itis necessary to have a burner that can be easily adjusted from ahigh to a low capacity simply and quickly and which can be cleaned rapidly and returned to its working setting without loss of time to'prevent fall of temperature. F f This burner will handle any grade of fuel due to thefact that the oil orifices can be opened to the full bore of the fuel delivery tube,- again becauseof'the peculiar cutting of the valve the fuel stream is always directed into the mouth of the-steam or atomizing agent, meeting theatomizing agent at a full impact at any settingandresulting in perfect combustion. In other burners, when the caprior patent. Other advantages are point ed out in this specification.

The essential object of thepresent inventionis the provision ofa burner which has no complicated mechanism, which is capable of economical operation when burningvery heavy fuels and which is capable of functioning continuously when burning said fuels without removal from the furnace for cleaning. With a simple movement the burner can be cleaned and returned immediately to its working 'settlng without loss of temperature or shutting off the burner.

ers when this kind of fuel is burned are eliminated.,

Another object of the invention isto obtain a perfect combustion of heavy fuels at anysetting. I

Another object of the inventionisito-produce a burner: which, is capable of being accurately regulated to suit any grade of fuel y means located exteriorly of the" fur nace in which the burner'is mounted.

My invention consists in the combinations and: details of construction described and claimed in the accompanying specification and illustrated in the accompanying drawing, in which Figure 1 is a side elevation of mylburn- OF NEW ORLEANS,

Choking and. rclogglng which are common with other burn-V or and its supply pipes and adjusting .de-

vices partially in section, I

Fig. 2 is an end elevation looking toward the burner, Y

' Fig. 3 is atop plan view, on the line 3-3,

Fig. 1,'of the lower member of the burner,

Fig. 4. is a bottom plan view of the upper member,

'sects wall 17 as shown in Figures 6 and dotted lines.' positions of slopes upward and forward from the paswhich is substantially conical valve is a-screw threaded a screw threaded end a sleeve 24 having a hand wheel 25 at one end The burner comprises a lower member A and an upper member B. The lower member has a screw threaded opening 11 in its'rear end receiving a pipe 12 for liquid fuel. A passage 13 in the member A forms a continuation of the passage in the fuel pipe. A transverse conical valve seat 15 is'formed in the forward end of the member A and a portion of the block is cut away in the middleof the forward upper part exposing valve 16 and lower and upper lips 14 and 14*. A longitudinal groove-17 is cut out of valve 16. One wall 17 of thisgroove is concaved longitudinally of the valve and the other wall 17", which iner- 1s concaved transversely of the valve. The valve is shown in its open position in full lines in Figure 1 and in its closed position in It will be seen that in all open the valve thebottom wall 1'7 sage 13 and that the front concaved wall 17 tangent to'the wall 17*, curves upward. from the wall 17 and forwardly of the lip 14'5 so that the liquid fuel, as it issues from the valveyis deflected directacross the path of the steam or other atommember of the burner. This is an important feature of my invention since in all other devices where there is a valve the fuel issues from the opening in the valve along a line extending forwardly in the same general direction as the atomizing agent and, consequentas elficiently to cause com- At the smaller end of the stud 18 which with the nuts 19 holds the valve in its seat. A crank 20 on the larger end of the valve is operated by means of a rod 22 having '23 on which is mounted ly, is not broken up plete combustion.

and an enlargement 26 at the other. The sleeve 24 is internally threaded so that when the hand wheel is turned the'rod is moved forward orrearward to operate the valve 16.

As the valve is moved to open position, the

curved wall 17 thereof ismoved toward the lip14 5and during the closing movement of the valve the wall 17 moves away from said lip whereby the dischargeof fuel from the burner is regulated. This movement of the rod is due to the fact that boss 26 is peripherally grooved and the boss rests in a hookshaped bracket 29; the hooked portion" of which enters the groove and prevents longi tudinal movement of the sleeve. 7

. Bracket 29 is mounted on a plate or bar 30 I which is supported by the T-coupling 32 which forms a portion of the fuel feedpas- .By means of a chart corresponding to the markings on the scale and knowing the pressure of the oil the operator is able to set the orifice in the valve 17 for any required quantity of fuel.

In the rear 'end'of'the burner member B is a screw threaded opening 37 into which the pipe 39 for steam air, gas or other atomizing agent is fixed. The passage 38 of this pipe communicates with a chamber 40in the member B. As shown, this chamber has a curved a recess 41 in the lower face of the member-B. This recess together with the plane upper face of the lower member A forms a fan shaped outlet or nozzle for the issuing forward wall and opens at its lowerend into atomizing agent. The pipe 39 communicates g with a T-coupling 43 by means of suitable connections 42. The inlet for the steam or other atomizing agent is controlled by a valve 46. An extension of this inletformed valve44.

In the ordinary operation of myburner the operator adjusts thevalve 16 by turning the hand wheel 25. The valveis shown in sleeve out of the hooked end of bracket29 and moves the rodbackward and forward bv the valve is set for maximum delivery. the operator bv pulling the wheel toward. him increases the area or orifice to the fullbore of the oil delivery tubewh'ich purges out by by the short pipes35, 35 is governed by 595 .400 ts maximum open position 1n Figure 1-. .It

.110 direct 'pulllng and pushing movements. If

means ofthe oil pressure through the orifice and directly in contactwith the steam, anv

particles preventing the flow of oil through v the orifice opening without putting out the flame. The control rod can bereset to its original position quickly by re-engaging it with the bracket '29. Should hard carbon have formed at the orifice movement of the valve backward, or forward will break the A hard shell.

Should oil pressure be very low, a small amount of steam-can beadmitted through the by-pass valve 44. Should the burner not be in operation a full head ofv steam can be by-passed through the oil delivery'line.

position of said front wall beyond said lip serving to deflect the fuel transversely into the atomizing agent in all open positions of the valve, said bottom wall being longitudinally curved and said front wall being transversely curved.

In testimony whereof we have hereunto set our hands.

REGINALD W. TITMAS. ROBERT S. HIGKISH.

working under very low oil pressure, then s the regulator by-pass steam arrangement, common practice, can be used to clear the fuel line.

I do not limit myself to the exact details of construction shown and described but the claims are intended to include all equivalent devices.

What I claim is:

1. A burner of the class described, com prising a nozzle for steam or other atomizing agent and a passage for liquid fuel, said fuel passage being located below saidnoz zle, a valve seat extending acrosssaid passage and having a lip located between said valve seat and said nozzle, and a valve rotatably mounted in said valve seat and having a groove presenting a bottom wall sloping forwardly from said fuel passage in the direction of said nozzle in all open positions of said valve, said valve groove also presenting a front wall extending upwardly from the front edge of said bottom wall and located forwardly beyond said lipinall open posi- V tions of the valve, the inclination of said bottom wall with relation to said fuel passage and the upward inclination of said front wall from the front edge of said bottom wall and the position of said front wall beyond said lip serving to deflect the fuel transversely into the atomizing agent in all open positions of the valve.

2. A burner of the class described, comprising a nozzle for steam or other atomizing agent and a passage for liquid fuel, said fuel passage being located below said nozzle, a valve seat extending across said passage and having a lip located between said valve seat and said nozzle, and a valve rotatably mounted in said valve seat and having a groove presenting a bottom wall sloping forwardly from said fuel passage in the direction of said nozzle in all open positions of said valve,

said valve groove also presenting a front wall extending upwardly from the front edge of said bottom wall and located forwardly beyond said lip in all open positions of the valve, the inclination of said bottom wall withrelation to said fuel passage and the upward inclination of said front wall from K the front edge of said bottom wall and the

Images