SA02220664B1 - radiant wallbumer High capacity Low Nox - Google Patents

Abstract

A burner assembly for a radiant burner includes a burner tube structure in the form of an elongated burner conduit having spaced inlet and outlet ends. The conduit is adapted and arranged for directing a fuel lean gaseous mixture comprising a portion of the total fluid fuel to be combusted and oxygen therealong from the inlet end to the outlet end. The assembly also includes a main burner nozzle at the outlet end of the conduit, which nozzle has a central axis, a wall extending around a centrally located chamber therein, and a downstream end spaced from the outlet end of the conduit. The main burner nozzle is arranged and adapted for receiving the mixture from the conduit in the chamber and redirecting the same through a plurality of apertures in the wall and into a combustion zone in a direction transverse to the axis and at a velocity which is greater than the flame speed of the gaseous mixture. The apertures are distributed circumferentially around the wall, whereby the mixture is directed without substantial recirculation and with minimal pressure drop through said apertures and into the combustion zone in the from of a generally round flat pattern which is detached from the nozzle, surrounds the wall and extends outwardly across a radiant surface of a burner tile. The burner also includes an elongated fuel tube extending in a direction generally parallel to the axis, and the fuel tube has a downstream end portion. A secondary fuel nozzle includes a secondary fuel tube has a downstream end portion. A secondary fuel nozzle includes a secondary fuel port on the downstream end portion. A secondary fuel nozzle includes a secondary fuel port on the downstream end portion. A secondary fuel nozzle includes a secondary fuel port on the downstream end portion. Of the fuel tube, which secondary fuel port is located and arranged so as to deliver secondary fuel to a position which is on the opposite side of the fuel pattern from the radiant surface and sufficiently remote from the combustion zone to permit the same to become intermixed with flue gases before entering said combustion zone.

Description

Y

NOy low capacity high capacity radiant wall burner a all BACKGROUND THE INVENTION The present invention relates to the field of industrial burners and in particular to wall burners operated to heat the surrounding parts of an oven wall and the radiant wall Radiant burners, which often consist of a burning slab, and where these heated surrounding parts distribute the heat later by radiation in the furnace. More specifically as well; The invention relates to a method of > to 5 508 Allah La gilad 5 3305 Slens permanently. Gee je Baa in radiant burners NOK It has been to reduce and/or reduce the desired goal in the industry is to increase production capacity La on that; it was dle

NOx for single irradiated burners without affecting the heat production capacity of primary premix 3 adie is used undesirably. 0 burners are known, but the burners were not efluid fuel resulting from the induction of a flow of air with the previous fluid fuel capable of producing ready-made mixtures of fuel and air containing about 7860 at most of the total fuel. These ready mixes burn at high temperatures and other pollutants. Furthermore; The amount of NOx pat yielding that was available for other purposes such as transferring flue gas to secondary fuel Vo to include the primary ready mixture of fuel and air on the Todas flame was severely limited. Most of the fuel required for combustion. Accordingly. The industry needs means to improve the efficiency of the burners to use radioactive burners so that the initial ready mix is poor in v

Combustion A large amount of secondary fuel is available to circulate in the furnace space away from the flame to be pre-mixed with a large amount of flue gas to further reduce combustion temperatures. The industry also needs radiant burners with heat production capabilities

big.

0e GENERAL DESCRIPTION OF THE INVENTION The present invention reduces the above-mentioned problems and enhances burner compositions ay Jb Aa ial) a high-capacity wall-mounted incinerator composition Ale; Low NOx as the initial mix of fuel and air has a Je air content and thus a much lower fuel content than those savvy in the technique would have previously expected. Also, the lay burners of the invention are capable of generating larger amounts of heat than the previously known burners. In accordance with the concepts and principles of the invention; An Alle radiant burner provides power incorporating a burner tube structure comprising two elongated burner conduit having an inlet end and an outlet end spaced apart. Lies the stream and arranges for directing a poor gaseous mixture with the fuel. It includes a portion of the total fluid 1 fuel to be burned and oxygen along its length from the inlet end to the outlet end. A main burner nozzle shall be provided at the exit end of the duct; This incendiary nozzle has a central axis, a wall that extends around a chamber placed in its center, and a downstream end that is far from the exit end of the stream. The nozzle of the main burner is arranged and prepared to receive a mixture of fuel ys and air poor in fuel from the duct in the chamber and to redirect the mixture without substantially recirculating it and with the slightest pressure drop through a number of apertures in the wall and towards the combustion zone in a transverse direction on the axis at a speed higher than the flame speed of the gaseous mixture. The openings are distributed around the wall; Thus, the bale of the fuel-air mixture directed towards the combustion zone through the holes in the Yo is a flat, rounded pattern separate from the nozzle; Surrounds the wall and extends towards only

¢ exiting across the radiant surface of the burner tile ideally; The fuel-poor gaseous mixture includes all the oxygen needed to burn the total fuel that is discharged to the furnace. The burner according to the invention also includes an elongated fuel tube oo that extends in a direction parallel to the axis of the nozzle in the form of a ple. The fuel tube has a lower terminal part on which a secondary fuel nozzle is placed, which includes a secondary fuel port. At least one 0 each secondary fuel port shall be placed and arranged to drain the secondary fuel to such a position in the kiln that it is on the opposite side of the flat, rounded arrangement of the radiant surface and is sufficiently far from the combustion zone to allow 0 for the secondary fuel to become mixed with the flue gases before entering the combustion zone. According to the invention; The required fuel pipe may be located outside the primary fuel orifice and each secondary fuel port may be located and arranged to drain the secondary fuel at such a speed and in such a direction that at least a portion of the secondary fuel (Gil) penetrates to the appropriate position described above. Yau than that; An elongated fuel tube may extend through the primary fuel orifice and protrude through its lower end to discharge secondary fuel directly to a position on the opposite side of the fuel-air line from the radiating surface. preferably; That the structure of the incendiary tube include a venturi tube where a flow of gaseous fuel is used to induce a flow of air; Thus x. is a fuel-poor air-fuel mixture formation. In the form of Je the mixture may include a mixture of gaseous fuel and air. In another form, Gy of the invention; The burner tube structure can include several venturi tubes arranged for parallel flow; Each of the venturi tubes is prepared and arranged to use a stream of gaseous fuel to induce a stream of air; Thus, the formation of a mixture © in the form of a mixture of fuel and air, which is very poor in fuel.

In particular, it may include a high-capacity Aa” al wall burner

Low NOy according to the invention on a nozzle arrangement Alp daa prepared for installation in a central passageway of a refractory incendiary slab inserted into a furnace wall

adjacent to the combustion area. Preferably, the slab should have a radiant surface surrounding the driveway

© and placed in a place adjacent to the combustion area. The orifice arrangement may include an elongated burner tube including an elongated downstream portion Ja (Gli fe 3a) extending through the passage fe ya (celongated upstream portion Ye daa) and may be

Parts like this have special axes extended longitudinally and arranged centrally. It may also include

The arrangement of the nozzle on a fuel-air mixture supply system

0 supply A source of fuel-poor combustible air-fuel mixture for introduction into the burner tube; The upstream end is connected to the top of the burner tube

fluidic connection with the fuel supply system to receive a fuel-poor combustible air-fuel mixture; The burner tube provides a stream of poorly combustible fuel-air mixture

fuel along its length from the upper end to the lower end of the lower part of the incendiary tube.

vo The arrangement of the nozzle according to the invention may also include a main nozzle placed at the lower end of the lower part of the incendiary tube adjacent to the cial surface, and the main nozzle shall have an internal chamber that is in contact with Als

Fluid with the lower end of the lower part of the incendiary tube to receive the fuel-poor combustible air mixture flowing along the tube. The orifice is arranged

The main compartment is shaped to redirect the fuel-air mixture in the compartment and induce it to flow without being substantially recirculated in an outward radial direction relative to the

the bottom of the incendiary tube; towards the combustion zone and across the irradiated surface in general. The main crater Jaa extends around the chamber and a series of openings extends

diagonally in the wall. The voids are arranged and shaped to distribute the fuel mixture

vo and combustible air in a radial direction with initial velocity

The Aye

. The flame speed of the mixture is in a circular shape that surrounds the nozzle in a radial direction mainly; Thus, a separate, round flame is formed when the mixture burns. dal The burner arrangement may desirably include a secondary fuel nozzle system comprising a fuel tube, Jas, extending longitudinally from the bottom of the burner tube and having at least one fuel gas port positioned and arranged to direct the secondary fuel flow to the In the oven on the cial opposite the combustion zone of the radiating surface. The secondary fuel (Tea) is mainly from the total fuel supplied to the combustion zone via the fuel-air mixture supply system and the secondary fuel nozzle system.

Gy to a significantly preferred form of Ale according to the invention; The fuel and air supply system for the incendiary may include an ejector comprising an al ay-can fuel inlet with a pressurized fluid fuel supply; A fluid fuel spud connected yall fluidly with the inlet and arranged in a specific position to eject the fluid fuel through a space in fluid contact with an air source and a bell-shaped fitting perforated sale at the upper end of the upper part of the tube scorching. The bell-shaped assembly has an orifice No arranged in a specific position to receive the ejected fluid fuel and the air carried with it

direct them towards the upper end of the incendiary tube. and in one form the Gay of the invention; The axes of the burner tube parts may overlap so that the burner tube is basically Laine. and then; al is the main; The incendiary tube and the ejector are essentially aligned along the superimposed ©-axes. and in a substitute form GE, of the invention; The axis of the upper part may grasp at an angle with respect to the axis of the lower part; Thus, the main nozzle and the lower part of the burner tube are arranged so that they are basically aligned along the axis of the lower part, and the ejector and the upper part of the burner tube are arranged so that they are aligned

Mainly along the top.

in one form the la of the invention; The Jad fuel tube may be located outside the ial main. preferably; In this form the Tay of the invention; The secondary fuel nozzle system shall include a number of elongated fuel tubes placed outside the main nozzle. desirable; Each of the secondary fuel pipe outlets is shaped and arranged in a certain position 0 to cause at least a portion of the secondary fuel to penetrate the fuel-air mixture pattern and reach the desired position in the furnace without being burned. In another form, Gy of the invention; The main orifice may include an end cap with a hole in which the fuel tube extends through the chamber and a lower portion of it protrudes through the hole. A port is arranged at the bottom of the fuel tube positioned 0 adjacent to the desired location in the furnace. desirable; A number of ports may be provided at the bottom of the fuel tube and the position in the furnace may surround the bottom of the fuel tube. Tidy, Concepts and Principles of Invention; The irradiated surface may be essentially flat or scaly in shape. desirable; The end cap may be convex with respect to 10 of the chamber. and in another form the ly of the invention; Cua The secondary fuel nozzle extends through the main foam and uses an eductor mixer to mix the primary air-fuel mixture ine. It is desirable to arrange the secondary fuel system to bypass the ejector mixer. This can be done as mentioned above by arranging the axes of the upper and lower parts of © | Angled blazing tube. Instead; The secondary fuel system may include a section of tubing extending laterally through the bottom wall of the burner tube; So that a part of this kind is in fluid contact with the upper end of the fuel tube. and in a highly preferred form according to the invention; The gaps in the Jaa orifice desirably include elongated slots extending in a direction essentially parallel vo to the axis of the lower part of the burner tube. preferably; The orifice wall may contain

A

circumferentially spaced, with slits between them; The surfaces of the bars shall have a series of recirculation zones (sale) adjacent to the chamber to discourage the formation of zones having an internal baffle part of the chamber. ideally; The burner may include an inner beam, generally bell-shaped lower, set in the chamber. The bell-shaped part can be extended circumferentially arranged next to the wall. In addition to that; The edge of the slits can be an upper end and a lower end; The outer edge of the bell-shaped part may be placed closer to the upper end of the fissure than to the lower end of the fissure. Ideally, the outer edge of the bell-shaped part would be located approximately one-quarter of the distance from the upper end of the incision to the lower end of the incision. Furthermore; The slits may desirably have upper terminal surfaces inclined in the direction of the fluid flow to flatten 0 forming recirculation zones in the chamber. In a preferred form according to the invention; The air-fuel system 71 and the secondary fuel system may be arranged so that the amount of secondary fuel constitutes more than about 50 to 50 percent as desired; be not less than 770 and ideally not less than about another preferred form as well according to Ay of the total fuel supplied to the combustion zone. 0 Vo of the invention; The relationship between the velocity at which the fuel-air mixture leaves the cracks and the flame velocity of the mixture is such that the upper end of the separated flame is located at 1 inch) to 7.17 cm (© inches) at a distance ranging from about 7.54 cm ‎ aa'

Al op Ta sda Ts the nozzle to ensure that the slab is of the invention; When the axes of the upper parts are arranged; lady for another preferred face Tay XY and the lower parts for the burner tube at an angle; The incendiary tube may desirably comprise a joint between its upper and lower parts; A secondary curved portion fuel system may include a section of piping extending through the wall of the curved portion of the burner tube with the upper end of the burner tube. Pipes and fuel tube mainly le and ve

Along the axis of the bottom of the incendiary tube, the incendiary mixer deviates at an angle. Gy for this arrangement; The secondary fuel system bypasses the abusive mixing of the primary fuel-air mixture and reduces the overall longitudinal dimensions of the burner. The invention also provides a method for operating a high-capacity radiant wall burner © Low (NOx). The method includes (1) discharging a flow of a fuel-poor combustible mixture that includes part of the total fuel to be burned and air in a radial direction from an elongated nozzle that has a central axis to a zone of combustion surrounding the orifice in the form of a flat, circular arrangement surrounding the wall and in such a composition that the flame velocity of the mixture is less than the velocity of the mixture as it exits the orifice; and the combustion zone is adjacent to the radiating surface of the incinerator slab; (1) the ignition of the mixture to form a separate flame a round mister surrounding the nozzle in a radial direction and located adjacent to the radiating surface; and (VF) a secondary fuel supply at a position on the opposite flame side of the radiating surface and sufficiently far from the flame so that the secondary fuel becomes mixed with the flue gas before entering it flame. The irradiated surface is in a circular pattern surrounding the main crater, mainly in a radial radial direction; (©) ada fuel-air mixture to flow outward from 0 main ail with an initial velocity greater than the flame velocity of the mixture; Thus forming a separate round flame Laie that burns the mixture; and (;) a secondary fuel supply at a location in the furnace on the opposite side of the zone from the radiant surface; The secondary fuel, Te 3a, constitutes substantially the total fuel supplied to the combustion zone by the fuel-air mixture supply system and the secondary fuel nozzle system.

ve to the invention; The secondary fuel desirably constitutes a percentage greater than Way, and ideally 7710 constitutes not less than about JST about 70 and preferably of the total fuel supplied to the 7160 Jor area not less than a percentage about combustion. of the invention; the secondary fuel shall be supplied at the point where the Gay is located and in one form > on the opposite side of the primary fuel-air arrangement by means of a secondary fuel nozzle extending from it; Secondary fuel is supplied in-situ using a Yay through the main nozzle. Secondary fuel nozzle releases a fountain of fuel that penetrates the system without burning. In cross sectional form to: 1 the figure illustrates a high power low leas radiant wall burner embodying the concepts and principles of the invention; and accompanying accessories; (NO) shows an enlarged view; in the form of a cross-section to a water boundary: Y Figure 1; of the tay figure of the main components assigned to the burner vo

Lag, vv View of a cross section taken along the line on: Figure ??; Jal Figure; : a side view of my birthplace is shown.”; In the form of another cross-section of a wall burner flared aed to the edge of water illustrating the concepts and principles of the invention; 17 wal (NOx high power; low Y.) and accompanying accessories; along line 0-0 according to Fig. ?; end cap Fig. +: Shows a similar view to Fig. © except that the end cap is slightly different; IKE of the main nozzle Yo

Figure 17: A detailed enlarged view of the rounded part Gy of the figure ?; Figure A : Shows a detailed view similar to Figure 7; except for the slot entry part; Figure 1 : Shows a side view of my hometown; as a cross-section to (a) another Taal also shows a radiant wall burner Alle power; low (NOx°) embodying the concepts and principles of the invention; and accompanying accessories; Fig. Cross-section image to a water limit showing another Tani of a high al low radiant wall burner “(NOx) embodying the concepts and principles of the invention; accompanying accessories; Fig. mm : 11 TL Sa’s view of a section showing the lower parts ia sil 1 secondary fuel suitable for use in various embodiments (aay) of the invention; Fig. 11 : a schematic hometown view of another embodiment of a Luan burner shows the concepts and principles of the invention; Fig. Gag burner of Fig. 1; Fig. 01: Shows an enlarged cross-section view showing details of a primary fuel delivery spud and secondary fuel delivery spud system. of a secondary fuel delivery system burner according to Fig. 9; and Fig. 117: shows a detailed view TT Sa of the rounded part Gay of Fig. 01. Detailed description of preferred embodiments of the invention

VY

The invention supplies a radiant wall burner; Low NOx Alle Power In one important aspect, the invention concentrates on providing a high power Low NOx wall burner da lia; it uses a fuel-poor air-fuel mixture to fuel the primary flame. Fuel mixtures help Fuel-poor primary air so improves Ua cturn down ratios at least because poor fuel-air fuel mixtures burn slowly and have reduced combustion velocity.Fuel-poor primary air-fuel mixtures also reduce; and perhaps completely eliminating the need for secondary air; which, 188 cla, increases NOx production but causes poorer fuel-air combustion mixtures to reduce the overall capacity of the primary burner; it was previously thought that the maximum possible power for this Burners with an outer bore diameter of about VE cm (0.0 in) not more than about VY million BTU/hour 10208/0. However, Gay capacities of the present invention in excess of approximately 0.10 million BTU/hr have become routine Toad without unduly affecting NOx yield. And in fact; The level of NOx ve improved in many cases when the burners of the present invention were used to obtain a dle output of NOx, and due to the increase in capacity and the reduction of the call speed, the burners of the invention also provide uniform heating of the radiating slabs Ses (less) toward the return ignition; Even when the fuel is mostly hydrogen gas, Lady flashback is a last consideration; The determination of the type of fuel used by the incinerator is not intended to be Gy laa of the concepts and principles of the present invention; vo The burner of the invention may be used with any available combustible blended or fluid fuel; including; For example, asl natural gas hydrogen gl... hydrogen mixtures of natural gas and hydrogen chydrogen illustrates one of the incendiary embodiments based on the concepts and principles of the present invention, and the incendiary consists of 10; as Ye with reference number Sa TS Cua) in fig

Ve comprising of YY elongated incendiary tube and generally of elongated nozzle arrangement oJ nie vo

VY

31 YA fuel-air mixture supply system for incinerators; secondary fuel system YT main Aa combustion to SUE which; preferred; It supplies a fuel-poor primary mixture of air-fuel for final distribution to the combustion zone YT to drain it into the nozzle YE scorching tube in a radial direction. As shown in part on 71, which generally surrounds the nozzle, the VY falc includes all of the conventional accompanying components (Yo incendiary gl) less in Figure 0a air control Jara 4 muffler for industrial burners; Including a muffler t+ includes an inlet FA fuel gas manifold arrangement and a fuel gas manifold arrangement from Yo supply to burner (Gol preferably fuel cle for fluid inlet and drain can also Connect ole (not shown in the figure) and line 4 ? to supply primary fuel. In a manner as built. Gaseous fuel can be in the form of Ee with input YA secondary system 0' hydrogen of natural gas Hydrogen, Us laa, is preferred as a natural gas, A, which supplies the stream (YE) and includes, as shown in Figure 1, the incendiary tube

FV to Nozzle 1 to deliver a stream of fuel-lean fuel-air mixture from the fueling system

EA;4. and for the two parts 7; And ;; 2 axes 1; and Win at length fe dag at length at the top 7; fe 3a arranged centrally; Each of them pertains to one of the two parts; The two axes extend longitudinally. 1 provided in a 0f fireproof slab has formed the bottom part;4; To extend through the central aisle of a kiln or the like. OA of heat 57 is arranged in the wall surrounding the aisle 54 and located adjacent to the combustion zone 01 and the slab 07 has a radiant surface during the process. and as YY so that it is heated by combustion that occurs in the region YY mainly flat; However; There are 01 forms shown in Figure 1; Surface can be Y.

Ob) is another well known to the tech savvy. And so on, as can be seen in the figure for the lower part ;; of a tube of YT placed at the lower end of the main nozzle. 01 adjacent to the wide surface of the incendiary YE can; By way of YE it can be seen that the burner tube 101 and again referring to the figure £Y connects the two parts TY (elbow is preferred; to include a curved part (or elbow joint vo

Ve

and EE thus; The axes ET and EA are at an angle; so that the foam 01 and the bottom £8 align along axis 48; as the upper part 7 aligns; supply system 30

Along the axis 476. WS seen from the shape preview?; The YT Aa gl is provided with a 40 m tarfissa cap that is arched towards the inside and has a general shape like a trumpet, and it has 17 centrally located vaults. The crater also includes a wall of 4+ that extends completely around it. Thus the end cap VE and the wall TA define a compartment 1 inside the nozzle YT that is in fluid contact with the lower end of the bottom 44 of the burner tube YE to introduce the fuel-poor air-fuel mixture from the burner tube 4 7. WS can see the shape preview?; The VE end cap is convex with respect to 0 to the .710 chamber so the +77 nozzle is shaped and arranged to redirect the fuel-poor primary fuel-air mixture without substantial recirculation and fan it outward from the YT orifice. In a radial outward direction with respect to the axis EA and so on the elemental mixture flows in the combustion region YY and through the radiating surface Ve and to achieve this; The crater 1 is provided with a circumferentially extending series of VY spores facing half Lhd and preferably at No; In the form of longitudinal slits extending axially. These longitudinal VY slits extending in a direction essentially parallel to the axis (EA) are preferably delimited by a series of circumferentially spaced VE bars as can be seen on inspection of Fig. ? and as desirable in a critical application. Tan of the invention; the nozzle may be 01 cylindrical with an outer diameter of approximately VE cm (0.0 in). 0 - VE rails can also be approximately 0.77 cm (+0.0 in) wide in a radial direction so that the Vie chamber has an inside radius of 11.4 cm (0.1 in) aly ) almost. The YT nozzle can have about 90 fissures; Each is about ©.1 cm (¥ inch) long and about 0.04 (2,000 inch) wide. And for the above; While these dimensions are; ...etc; Preference for an existing application (Ls) it shall be known that the dimensions of the orifice and yo slits are not critical features of the invention. Shad in retrofitting applications the vo of the notches JS dy can determine the diameter of the orifice; in general, the size of the orifice passage The size is determined by the capacity of the furnace and the characteristics and parameters of the fuel. There is greater freedom when building a modern furnace, and there is no specific limitation on the diameter of the nozzle. With regard to the shape and size of the crack, it is sufficient that the volumetric rate is said that sufficient space must be provided to deal with the volumetric flow rate. Exceed the flame escape velocity Ae ju m of the fuel-air mixture and vaporize the mixture and locate the separate upper flame tip so that it heats the radiating surface uniformly Those skilled in the technique will realize; optimal dimensions can depend on variables LS is uniform. Such as the characteristics and parameters of the fuel available, the heat capacity of the furnace, and the total volume of the primary fuel-air mixture; as a result, the notch dimensions should in many cases be specified to reduce pressure drop and reduce the presence of recirculation zones within the Tay. jad specific application 0 nozzle to minimum.

The YA secondary fuel system may include a length of tubing 76 that connects through a VA fitting allowing the VI pipe to fit into the Yi pipe through the elbow 17. The tubing connects VT in-tube Yai YE Galle vo with the upper end of the elongated secondary fuel tube 80 extending longitudinally from the lower part 4; For tube YE along axis EA and as seen in Figure oY the fuel tube AL extends through compartment Ve and has a lower end AY protruding through hole 16 into end cap 4 +. Referring to Figure VY it can be shown that the terminal AY is provided with one or more ports AY to direct the secondary fuel flow outward into the furnace cavity. It can »| The tube 80 should also be provided with an internal orifice, Ao, to control the secondary and secondary fuel flow

desirable Te Sa constitutes substantially of the total fuel supplied to the combustion zone. Referring to Fig. 0, it can be seen that the YY burner assembly may preferably include an AE beam fitted into the Vie chamber of the YT orifice and the beam 84 may be equipped with series AT tabs (only one shown). That Ja vo is attached to the inner surface AA nner surface of the wall TA by welding or the like to arrange v1 mode

And the centering of the crossbar AE and it is preferable that the crossbar 84 have a lower part 484 on

Bell shape with outer edge 90 extending circumferentially adjacent to the inner surface AA of the wall

TA and it is desirable that each VY incision has an upper end AY and a lower end edt and from

It is preferable to have the axial position of the AF beam so that the edge 0 is closer

0 to upper limbs AY from which to lower limbs AE and typically; can be placed

Edge 90 at a quarter of the distance Ly pi from upper limbs 97 to lower limbs Af

That is, when the VY slits are 00 cm long (Y inch); Use se is to be set

Edge 0 at a distance of 1.77 cm (5, in) axially from ends 7

For VY notches and for the axial position of the edge (de) should be realized by the experienced

0 in technology that this is also not a critical limitation of the field of the invention. It suffices to say this

In particular, the axial position (JY) of edge 90 is simply that position where

The JTL Hyg pressure drop minimizes the appearance of recirculation areas.

The Yo-fuel air-fuel system can be in the form of an ejector or a tool

A conventional venturi 10 comprising a main orifice or plug 91 for ejecting the gas stream into

Space 98 that communicates with the air source and venturi inlet bell 001

All of these GSAs are installed inside the muffler;? shown in Figure 1

And it can not be seen. However, it shows the payment (AT space 58) and the entrance bell 001 schematically in

Figure NF, which illustrates Lia’s incendiary process 70. Also, appropriate payment details 176

Shown in Figure 117 where it can be seen that repayment may be desirable to include

0 internal fuel chamber 114 internal fuel chamber to be connected to the fuel supply line

fuel supply line 79 (see Fig. 1) and AE Jami Ty Gilg number of nozzle holes

end plate perforated into end plate 111 hole size tablio.1" 01 jet orifices

11 of the seal 97 to supply an appropriate flow rate to the nozzle YU and send

Seal with a source to supply pressure-conditioning gas ejected through nozzle holes 001 and then

fuel gas inward. They inject gaseous fuel (el sed) case Ty, where AA is Yo

And the"

The drawn air loses in a parallel direction with respect to axis 476. The motive energy from the gaseous fuel supplies the energy used to draw ambient combustion air into

Entrance bell 001 and through the venturi section of the incendiary. The intake air-fuel mixture then flows; Which Jatt is to be poorly mixed with fuel; to enter into

.001 for entrance bell 49 mouth open end or hole 0

The upper part may contain 7; The YE incendiary tube has a Venturi throat part

001 The inlet bell (© diffuser portion) and a diffuser portion 90 venturi throat portion (©) are designed to provide an even, uniform flow path for combustion air from the space.

.0 and the venturi throat is 0 ©; It is located directly below the entrance bell 001 Fig

0 principal of a straight tube. The parameters of the tube design are; Especially the pipe length and diameter; Important because it plays a critical role in achieving combustion air intake. And the party communicates

lower venturi throat with diffuser 07. and can; preferably to be the publisher

OY in the form of an elongated conical section supplies YE progressively from annular 0 to the long radius IY elbow joint and the long radius Adal elbow leads half of the hill

17 ve two jobs. The first allows the venturi to shift so that the YA secondary fuel system is properly positioned to exceed the 200 venturi throat section. The arrangement of the design provides a major improvement in drag achievement.

Air compared to designs in which the secondary fuel lifter is located along the centerline of the throat. The design in achieving the intake of combustion air increases the gage to a flame temperature

less, which provides a substantial reduction in NOK emissions and the second: the TY crankshaft provides

© A method of reducing the overall length of the burner. In many applications the overall length of the burner is sna fy by the constraints of the furnace space. oT Says The use of elbow joints with different angles of design to meet the needs of specific customers. and connected to the lower part 44 », which can be in the form of a tube of a specified length; with the lower end of the elbow joint. When the air-fuel mixture exits the long crankshaft, we blow

ve diameter The fuel-air mixture flow models have a high offset. The lower part is allowed

Ya

;; For the lateral diagram of the gas flow to become uniformly distributed before the gas enters the foam, and the uniform distribution of the gas flow through the burner nozzle is important to the burner YT for good flame quality. When operating; The VY slits in conjunction with the bar Af distribute the fuel-starved initial 0 air-fuel mixture without substantial recirculation and with minimal pressure drop in a radial direction at an initial velocity greater than the flame velocity of the mixture. This desired flame velocity condition can be determined empirically based on the total area of the flux provided by the slits; the total volume of the air-fuel mixture flow; And press the last. VY slits are also arranged to direct the primary air-fuel mixture in a radial radial manner towards 0 exiting nozzle 77 to form it; In the region 011 Gils Lins FY surrounds crater 76 radially. edi log that the fuel-poor primary fuel-air mixture distributed through the VY slits contains less than 7850 total fuel to burn in the combustion zone FY and is more preferable; that the fuel-fuelled initial air-fuel mixture contains less than about ZV of total fuel Ne that will burn in the combustion zone FY and ideally; The initial fuel-air mixture fueled can contain less than about 7860 total fuels that will burn in combustion zone 77. As a result of the initial velocity of the mixture; Provides circular Gil 070; in the form of Ld (Janie when combustion occurs; Sadia for asl YT has an upper end; 10 with a position of approximately 7.54 cm (1 inch) to VOY cm© - (? inch) from the .01 nozzle and at the same time as the primary fuel-air mixture radially from the nozzle Ala gy YT directs the secondary fuel passing through the lower end 87 of tube 8 00 Which: Gna protrudes from end cap 14 of nozzle YT by means of ports AY to adjacent space 011 surrounds lower end AY of fuel tube Av inside furnace but is vo downstream of arrangement 017 And on the opposite end of the surface is this Te, Gall

V4 When the fuel circulates through the furnace space away from IT in Figure 018 shown with arrows, the flue gases are withdrawn and finally return to the main combustion zone FY combustion zone

Gamay .011 is involved in the combustion reaction. This withdrawal is indicated by the arrows Cua TY

NOx The presence of drawn flue gases reduces the flame temperature and thus produces 71 can; Preferably the secondary fuel constitutes more than about pl pad of 710-850 and ideally of 700 and it is desirable that it be at least about the total fuel supplied to the combustion zone. VISE V 114 End caps alternatively SA aS ref. Generally conical. Apart from Figure 114 in this case; The terminal hood is in Fig. + substantially the same 171 and in dimensions as the nozzle VUE terminal hood 0 In another very important application of the invention; the cage je nozzle +7 in Fig. #. And approximately 3.75 cm (8.017 aly cylindrical with an outer diameter of 171 in.) (Y0) can be 0.178 cm wide (WW, Y0) and the rails can be LE in.) 1.9 cm inner diameter of 171 in radial direction so that the Li chamber has a length of each Ve (177 YY notches in) approximately. The nozzle can have a (Y,AVE - 0 in.) 100 cm (AVE) NEY cm (¥ in) and a width of about 5.1 of which is about

VAY AY and in both forms © and ; The upper end surfaces appear flat and arranged in a plane mainly perpendicular to the two walls 177 VY of the cracks and alternatively; These end surfaces can slope towards the fluid flow as NTA and TA where the sloped end surfaces are identified by the reference number A shown in Figure YS in stimulating the formation of YAY sloped surfaces and YAY sloped surfaces can help

OF In the same way; Referring to Figure YY, preferably recycling areas in the compartment; rounded sec VE for rails 111. The inner flanges can be .710 to help smooth out the formation of recycle areas in the chamber.

Thus the main orifice YT of the burner comprises a si series (si) allowing the combustible fuel-air mixture to exit the burner nozzle YU in a radial direction. Generally parallel to the furnace wall and across the scattering surface 0 without substantial recirculation and with minimal pressure drop in the nozzle YT Those skilled in the technique can optimize the width, depth and length of these notches so as to provide adequate outlet space needed for the required burner ignition capacity and to ensure that the burner operates without return ignition. A fuel-air mixture that prevents the formation of recirculation zones in the afterburner nozzle area 6?.To prevent the formation of recirculation zones near the afterburner nozzle YU is important because it helps 0 reduce NOx emissions by helping to separate the primary flame from the afterburner nozzle 76 Separation of the initial flame from the main orifice of the burner ob YU allows more furnace gases to be drawn into the flame This causes a reduction in flame temperature which reduces NOy emissions and creates internal beams similar to beam 84 in US Pat. No. 470716951. However; The inner crossbar af otherwise lily corresponds to the principles and concepts of ae of the present invention. Thus the beam 84 is used to reduce the amount of energy required to draw the fuel-air mixture through the scorcher nozzle YT by minimizing the pressure drop and the presence of circulation sale zones in the nozzle 76. Thus the overall design provides an incendiary nozzle (Lil das) with an extruder capable of drawing more combustion air (Gage) into a leaner primary fuel-air mixture. Such a poorer fuel-air mixture causes a reduction in flame temperature © | resulting in lower Noy emissions. NOx emissions can also be further reduced using the staggered fuel concept described above. The transported fuel enters in stages to somewhere in the furnace at the opposite end of the combustion zone from the radiant slab. Fuel can be moved in stages using a lifter that is inserted into the venturi attachment section and through the center of the lower xe section of the burner and nozzle. The fuel transfer nozzle protrudes in stages through the center of the plate

Yat)

Ya

Terminal for incendiary nozzle. It is preferable that the ports of the conveyor fuel riser on the Jal ge are designed so that the conveyed fuel is injected in stages at a distance from the furnace wall and the primary flame. The transported fuel is mixed in stages with the furnace gases before being drawn into the primary flame. It reduces the mixing of the phased fuel with the flue gases in the kiln; © before combustion; Flame temperature Lage reduces NO emissions and correct injection angle is not critical; As long as the secondary fuel, Tam, remains away from the main combustion zone for a sufficient period of time to withdraw a large amount of furnace gases reduced to NOy and practicable; The secondary fuel can be left at an angle that may be inward; towards the outside or parallel to the oven wall. (Alle) and demonstrates an alternative embodiment of a low radiant wall burner »110 with a capacity of 01

YY, where denoted by the reference number of The concepts and principles of the invention are embodied in the figure, that the upper part 7; a Yo The only essential difference between the burner 17? And scorching

YS from conic. In addition to that; The nozzle Yau cylindrical TYE of the incendiary tube to increase the flow area of the poor fuel-air mixture 114 is equipped with a series of holes ve with fuel directed radially. The figure shows; Loaf The use of the incinerator of the invention is associated with a slab of fol having a radiating surface 01 concave or goblet-shaped. An alternative embodiment of a low radiant wall burner 010 of Alle power embodying the concepts and principles of the invention is shown in Figure 9; Where identified by the reference number TY and in the burner FY the upper part Coal EY burner “B” is axially aligned with the bottom part “C”. Thus, the burner tube “B” is straight. In this case the YA secondary fuel system comprises a VT tubing section extending from plug 1b through bell-shaped fitting 100b. The details of the sealing arrangement CAT and the piping portion “Lab” are shown in Figure Cua VT. It can be seen that compartment 811b is in direct contact with the upper end TOV of the piping portion 1/AB. Seal 417b provides the CVT with a number An abundance of 171b primary fuel jet ports are arranged around the upper end of the Yo

YY

The BVT has a place to induce air flow in the upper end 19B of the bell-shaped fitting 100B. The VY tube segment is connected to an OA secondary fuel tube having a lower part HB with HHP ports. Hb to deliver the secondary fuel to place 11010b on the opposite end of the combustion zone FY of JB This embodiment is deficient; although it can be operated on radiating surface che 0

Jt Nay extending through the throat of the launcher VT in the functional sense; In that part of the pipe network has a flow area. And accordingly; As explained above; The ability of the ejector to induce a fuel flow decreases with this tan air and therefore it is more difficult to produce a poor embodiment ready mix. ve An alternative embodiment pal of a low irradiating (NOx) wall burner of Ae power embodying the concepts and principles of the invention is shown in Figure 01 where 75 22a in reference section EY and in burner EY as is In burner 371 in Figure @ the upper part 7c of the burner tube 4 7c is aligned axially with the lower part c. That is, the axes at] and 4c (US) fe and the burner tube 7c are straight ae and main orifice 77c; incendiary tube aE fitting 100g bell-shaped and dal plug 15c principally aligned along the overlapping axes 1c and 4;c Aa lg plug 1c in Fig. 01 with reference number AT In Fig. 1. except for the nose of the 4700 burner In order to avoid the problems of the 371 burner, the secondary fuel system 78g was designed to bypass the plug-in ejector system 47g and the bell-shaped 0g assembly. +7/Ag arranged outside the upper part af of the incendiary tube at and as shown in Figure 00; the pipe network part 1/Ag can include a straight extension 111 Talal at an angle NYA, so the extension is 118 It is arranged at an angle with respect to extension 117 and extends through the wall Ye of the lower part af and the lower end of extension 118 (vo not shown in Figure 01) has a fluid connection with the upper end of the secondary fuel tube mah and can that

The tube 40g is the same as the tube 80 shown in Fig. 11. It is worth noting that Lay is related to the aforementioned secondary fuel systems YA and 8?! For the burners Yo in Fig. 1 and 7700 in Fig. of respectively; The UI also bypasses the ejector system to avoid the 7710 incendiary defects in the AJ

An arrangement similar to burner arrangement 4710 in Figure 01 is schematically shown in Figure NY. In Figure NY burner arrangement the Tore OYA secondary fuel system comprises a multitude of segments 1d that extend beyond the upper portion 7;d. Each piece includes VT straight extensions 111d and extensions at angles VA, and as can be seen in figure OY, the NVA extensions extend through the wall 10d for the lower part; d. The lower ends 811d' 0 of the VA extensions are connected by a fluid connection with the upper end of the tube, he.

The lower end AY has through the nozzle 1?d and the end cap AVE Another alternative embodiment of a low dade wall burner (NOx) of dle capacity An embodiment of the concepts and principles of the invention is schematically shown in Fig. 104 where identified by reference number OY and the burner oY may be substantially the same as burner 01 1 in Figure 1 in all functional respects; except that in this case it may incorporate a fuel mixture supply system- air 1”e supplying the fuel-lean primary combustible air-fuel mixture to the burner tube; 7e for introduction into the nozzle 77e for final distribution of aT combustion zone over an ejector or overhead venturi tube 46e. and the useful multiple venturi system in connection with the burner + OF is fully described and illustrated in - pending application serial number 89747487/ 1 which may include ody fare of Venturi devices. be of the form ana ccollector can be 1 or JY; or even more A; and the integer is limited only by the physical dimensions of the place where the burner is used. Suffice it to say that vo use of multiple venturi tools may make it possible to shorten the overall system length and produce

Y¢ that oY 0 with fuel. Notable for the Tan burner Poor primary fuel-air mixtures 280 Completely bypasses Venturi devices—aYA Central Mounted Secondary Fuel System Ae Si Another alternative embodiment of a low NOx capacity dada wall burner dad Alle Concepts and principles of the invention are shown schematically in Figure V0 where Mas is reference number AY and in this Aad) the extended fuel tubes A+ for the secondary fuel system 78f are arranged outside the nozzle 6?f. And each tube 00f has a lower terminal part “that is similar to the terminal part AY shown in Figure 11. That is, each part AY can have Sy with one port” is formed and positioned so that at least part of the The secondary fuel to the place 710W which is inside the furnace but below the 110W series which is 1 in Figure 710 in the manner described above for the burner SYN is by means of the nozzle 0 from the shiny surface (not shown in Figure 01" Guill, which is on the opposite end (0). The secondary fuel enters through the outlets “is to the location 110 and al amy indicates in an appropriate direction and with a speed sufficient to penetrate the system 710 and without combustion, to reach the place 710 and in an unburned state. This penetrating flow is illustrated by arrows 0 and in Fig. 09, and with CTY for the combustion zone, Tam, the fuel circulation through the space 1100 and adjacent to the furnace space 1

Jay where SFY draws the flue gases and eventually returns to the main combustion zone in the combustion reaction. This drag is indicated by arrows 110 and F. The fuel delivery lifts are designed in stages; preferably So that the transported fuel is injected in stages into the furnace at a pressure ranging from? to 11 lb/in' and at an angle from YY so that a portion of the injected fuel mixes with the primary flame; However, a large part of it penetrates the cover of the primary flame and into the furnace below the primary flame, where it mixes with the furnace gases before being drawn back into the primary flame. As explained by Glu in US Patent No. 0180707; Similar external secondary fuel nozzles were Aa ike end tubes and the secondary fuel gas simply mixed with the primary flame. Except that

Yo and AT are accelerated in the present state; The secondary gas is carefully measured by the ports at the fuel pressure so that penetration occurs through the primary flame. The invention thus provides a staged fuel burner; little pre-mixed; and high capacity. It is preferable that the burner include NOx partially; on scholarship m | A venturi section sufficiently independent to introduce a pre-mixed fuel-poor air-fuel mixture into the main nozzle of the burner. for the main burner nozzle; placed at the exit end of the venturi section; Radial exit slits allow the combustible mixture to exit the main orifice in a radial direction, generally parallel to the furnace wall. According to the concepts and principles of the invention; optimized variables displayed; the depth and length of these notches to provide the high firing capacity the appropriate total area of outlet necessary for the ignition capacity 1 of the burner; To ensure that the incinerator operates without reflux problems, mixtures with a hydrogen fuel content may, in many cases, contain high hydrogen. The flame formed by the main burner nozzle is called the primary flame. It results from the outlet slots design of the main burner nozzle; and the use of at least one internal crossbar to assist in the re-flow of fuel-air that has normally been mixed over a distance of 0 da Ty without the formation of recirculation zones. flame about scorching. This "separation" of the primary flame draws large amounts of certain Tas and NOx from the flue gases in the furnace into the primary flame. Thus reducing emissions, the use of a fuel-poor air-fuel mixture for the primary flame is an important milestone in the "separation" of the flame from the main burner. The poor initial gas mixture falls into the fuel; preferably in ov. For the flame to bond at the Ga peak, the range of flammability conditions that make it incendiary. Feeding the primary flame envelope with staged fuel provides the additional fuel required to bring combustible mixtures into the proper range for balanced combustion. More staged fuel injection on NOx additionally lowers emissions of stages. Fuel can be moved in stages using vo-equipped side-mounted cranes

Yat)

Fuel tops transported in stages. Fuel can also be moved in stages using a central lever that is inserted through the venturi-tip assembly and protrudes through the burner tip end plate. Except that it is preferred; That the fuel is staged using a secondary fuel tube that bypasses the venturi of the burner but still passes through the main nozzle 0 and protrudes through the nozzle end plate. can; preferably The transported fuel shall be injected in stages into the furnace at a location opposite the primary combustion zone of the radiant slab at a pressure from 1.25 kPa (¥ psi) to 01.47 kPa (V0) psi '). in addition to; The secondary fuel is injected into the furnace at an angle of 0 Tuas from the horizontal from the primary flame. The transported fuel is mixed in stages with the furnace gases before being drawn into the primary flame. Because of the way the transported fuel is injected in stages and the pressure used in the process; The 'secondary' flame, or more accurately the stage flame formed, is lower (especially using heavier hydrocarbon fuels); with clear boundaries; away from the furnace slab; causing uniform heating (Aa) 1 of the furnace and the wall. The central lift results in low-noise emissions due to the use of the Mla kit to introduce the primary fuel to the top of the main burner. The use of several fuel outlets shifts the frequency of the noise generated by the jet to higher frequencies. Nor do conventional ready-mix burners successfully utilize several basic technologies and theories simultaneously to achieve far greater dle ignition capabilities, ALE NOx emissions (aa | and high stability over a wide range of operating capacities and fuels; as they do The new design described herein.The new design exhibits the following performance advantages: 1- high ignition capacity without increasing burner diameter Y- very low NOx emissivity YO *- low flame profile;

l ;- separate flame Jo; 0—Very uniform heating of the slab and furnace wall; - 1 high reduction ratios due to fuel-poor air-fuel mixtures; -1 High stability under all operating conditions; =A ° Operation with fuel mixtures containing high hydrogen levels; 4- Low noise generation; -0 Adequate and efficient operation using most commercially available tiles; -11 use staging fuel for lower NOx emissions; NY Recycled induced flue gas with secondary fuels for 00+ lower emissions; 1-1 Simplicity. Ya

Claims (7)

YA Protection Elements 1-1 radiant wall burner high power low capacity (NOx Y) including elongated nozzle arrangement prepared for installation in a passageway in a furnace wall adjacent to the combustion zone zone ¢ where the aforementioned furnace wall provides a radiant surface Leda surrounding the aforementioned passage and located next to the aforementioned zone; the aforementioned nozzle arrangement includes: 1 elongated burner tube comprising an elongated v-part JS elongated downstream portion extending through aforementioned passage A and an elongated upper part celongated upstream portion and its ald axes 56 longitudinally centrally arranged; 01 fuel-air mixture supply system supplies a source 11 of a fuel-poor combustible fuel-air mixture to enter the said burner tube; VY The upstream end of the upper part of the burner tube Yat yr fluidly connects with the fuel supply system to introduce the combustible fuel-air mixture Silly 4 with the fuel; The aforementioned pipe provides a conduit for the flow of the aforementioned combustible and fuel-poor fuel-air mixture along its extension from the aforementioned upper end to 1 the lower end of the aforementioned lower part of the incinerator tube; 7 main nozzle dc gus ge main nozzle at the lower end of said lower part VA of the burner tube adjacent to said radiating surface so that the said main nozzle 4 has an internal cavity in fluid contact with the lower end of the lower part 7 of the burner tube To introduce the combustible fuel-air mixture poor ny with the fuel flowing along the tube; and arrange said main nozzle 2 and shaped to redirect the air-fuel mixture in the cavity and cause it to flow in a radial direction ye outward with respect to the axis of said lower part of the burner tube; to Ye the said area; In general, across the aforementioned radiating surface, and the main crater, Yo, mentioned, includes a wall extending around the gap, and a series of openings extending half a diagonally in the wall of the main crater; The aforementioned vacancies are arranged and formed to distribute the aforementioned vv of the combustible fuel-air mixture in the aforementioned radial direction YA at an initial velocity greater than Ac pu flame speed of the mixture Yq and in a circular pattern surrounding Mainly said crater in a radial direction; Thus a separate round flame Laie is generated in which the mixture is in a state of combustion; 9 F Cla gd secondary fuel nozzle system elongated secondary fuel tube yy extends longitudinally from the aforementioned lower part Yt of the burner and has at least a fuel gas port One of them is re subject and arranged to discharge a secondary fuel stream, Al aay, which moves in an outward direction, away from the said radiating surface ry, to a location that is axially far from the aforementioned area, and the rv does not come into contact with it, thus providing an opportunity for mixing the secondary fuel with flue gases subject YA to combustion by an excess amount of air in the combustion zone; So that said secondary fuel 4 Te a constitutes a large part of the total fuel supplied to said combustion zone 1 by said secondary fuel-air mixture supply system and said secondary fuel nozzle system 3. 1 "- Alle radiant wall burner A" xia Low ccapacity NOX: As mentioned in Claim 1 where dads fuel-air supply system v The aforementioned 1838 ejector comprising a fuel inlet ¢ connectable to a pressurized fluid fuel source; A fluid fuel spud ° connected to a ladle with the aforementioned inlet and placed to eject the fluid fuel 1 through a space in fluid contact with an air source; and the fitting combination v. 7 Mounted on the said upstream end of the upstream portion A of the cburner tube The said fitting shall have an opening 5 Installed to insert 9 A premix consisting of ejected fluid fuel, air carried with it and Ve directive fuel and air to the upper end of the scorching tube. dd ay 1 radiant wall burner high power low capacity (NOx Y) as mentioned in the protection element Cua oY the axes overlap and thus the v is the burner tube mentioned Basically straight and the said ¢ main nozzle, said burner tube and said ejector 0 basically along said axes. 1- A high-capacity, low-capacity radiant wall burner NOy 7 as stated in protection element A, where the Op-axis is axis upstream portion ¥ at an angle with respect to to the axis of the cdownstream portion and thus ¢ arrange said main nozzle and said lower part of the < burner tub essentially; Align with the axis of the said lower part ' and arrange the said ejector ala) 1 and the said upper part of the incendiary tube; basically; l along the axis of the said upper part. 1 0-— radiant wall burner A a ba high capacity 80817 LOW (NOK Y as protection element dua) secures said elongated secondary fuel tube ¥ outside the main orifice main nozzle mentioned. 71-1 radiant wall burner 4" ada high capacity low capacity 7 0 as stated in claim 1 where the i ag system contains secondary fuel Secondary fuel nozzle system 1 Said Tose and unmold said secondary elongated fuel tubes ¢ so that said fuel pipes fit outside the said main nozzle. 1-1 radiant wall burner la bed aa high power low capacity “(NOx) as stated in protection © where said port Jd es is located; y and is arranged to lead to hack At least part of the secondary fuel in the ¢ fuel-air mixture pattern and reaching the aforementioned place in 0 furnace without combustion. 1 - high power radiant wall burner a Sedan low scapacity “(NOx 1) as stated in claim 1 wherein said main nozzle 1 has end cap cap 00 perforated Whereas said secondary fuel tube ¢ extends through said cavity and a downstream portion ° of it protrudes through said hole and said port 1 is in 9 said lower part of the fuel tube It is placed adjacent to the aforementioned place in the oven. 11 4- Radiant wall burner high capacity 0208017 low (NOx Y) as mentioned in the protection element Cua A provides a large number of ports mentioned v in the lower part downstream portion The aforementioned fuel tube, and the aforementioned place ¢ in the oven surrounds the aforementioned lower part of the secondary fuel tube. -0 1 radiant wall burner dads high capacity ccapacity low NOx Y as mentioned in Claim 11 where the radiant surface is YY 1 mentioned is mainly flat. 1) = radiant wall burner with high power, low capacity (NOx) as Y mentioned in claim element 10, where the said radiant surface is concave. jla = Y \ 43 radiant wall burner 3 adie high capacity low ccapacity (NOy) as 1 mentioned in claim 11 where the said radiant surface is on 7 mug shape. HIGH CAPACITY RADIANT WALL BURNER 10-1 The secondary fuel system Cua A of protection element (Low NOx Y) comprises a piece of tubing running through the bottom wall. secondary fuel system and so that the said cburner tube of the downstream portion ¢ of said upstream end has a fluid connection with the upper end secondary fuel tube 1 ° -145 1 radiant wall burner 4A "xia" high capacity low capacity "NOx 7" as stated in protection element "A" where the end cap mentioned v is convex Ay ally to the mentioned cavity. <capacity, radiant wall burner, radiant wall burner, 8-1 openings, where the gaps include 0, as stated in the protective element (NOx, low Y), extending in a direction that is mainly elongated slots mentioned 3 elongated notches for burner tub for downstream portion parallel to the axis of the lower portion ¢ YY “high-capacity radiant wall burner - 1, where the wall of the main nozzle 09, as mentioned in the protection element, includes (low NOx) Y slots spaced circumferentially, forming cracks, the aforementioned bars series The aforementioned main nozzle rods 1 and cavity cavity have round surfaces adjacent to the gap in the cavity. \ “low capacity Y” 210 as stated in the protection (Cus) said burner 1 comprises at least one baffle having a downstream portion generally in the form of ; The bell is installed in the mentioned cavity; The aforementioned bell-shaped part has an outer edge that extends circumferentially, arranged adjacent to the aforementioned wall of the main crater. .main nozzle 3 “high capacity radiant wall burner 18-1 where the aforementioned burner includes V0 as mentioned in the protection element NO low Y generally in the form of a downstream portion at least one having a baffle lower part of the said 1 edge; The aforementioned bell-shaped part has an edge and a cavity; The bell installed in the gap, the main nozzle mentioned for the main nozzle, wall, external, extending circumferentially, arranged next to the wall: ccapacity, high capacity, radiant wall burner, radiant wall burner, 4-1 mentioned slots, where the cracks have VA as It is stated in the protection element (NOx low Y edge) and the spur is fixed downstream end and upstream end upper end 1 the external mentioned for the part that has the shape of a bell in a place closer to the upper end ¢ to the notch than to the lower end For the crack.‎ ° Yt “high capacity radiant wall burner Ve 1 edge with edge 04 as stated in protection element (low NOx) external Y mentioned for bell-shaped part approximately one-quarter of the distance from downstream end slot upstream end upper end ¢ “high capacity radiant wall burner YY 1 aforementioned slots where the cracks have 108 low 80 As stated in claim, d upper peripheral surfaces slope in the direction of the fluid flow to discourage the formation of cavity zones in the cavity. ¢ “high capacity radiant wall burner YY 1 Where the mixture supply system (o) as stated in the protection element (NOx) is low (Y) mentioned and the secondary fuel-air mixture supply system is fuel-air v, so that the amount of Ta peg Cl “sea” is Said secondary fuel system ¢ of the total fuel supplied to Zone 771 More than approx. Combustion zone 1 —YY \"high capacity" radiant wall burner X is low (NOx) as stated in claim YY, where the said fuel-air mixture supply system v and the said secondary fuel system ¢ are arranged so that the JSS is The aforementioned secondary fuel is a percentage of not less than about 770 percent of the total fuel supplied to the combustion zone combustion zone 1 vo A high-capacity radiant wall burner VE 1 in which a YY mixture supply system is impregnated as mentioned in the aforementioned low NOx 7 protection element and the secondary fuel-air mixture supply system Fuel and Air 1 Amount of secondary fuel mentioned J Sly percentage stated so that the secondary fuel system ¢ percent is not less than about 756 of the total fuel supplied to the combustion zone: combustion zone 1. “High capacity radiant wall burner 1 Yo radiant wall burner where the fuel nozzle system (YY) as stated in the mentioned low NOx protection element (YY) is arranged to connect the secondary fuel nozzle system and The secondary is at a pressure of at least about 0.4 kPa (7 lb/in) fuel gas with an elongated fuel tube. 1-1 “HIGH CAPACITY RADIANT WALL BURNER RADIANT WALL BURNER WHERE THE YO FUEL ORGANIZER SYSTEM AS DESCRIBED IN THE LOW NOx PROTECTION ELEMENT SATED Y FOR CONNECTING THE REQUIRED FUEL PIPE secondary fuel nozzle system The secondary ¥ at a pressure of not less than about fuel gas in an elongated fuel tube {a kilopascal (¥ psi"). -71 1 radiant wall burner high capacity and expansion; Low (NOx) as stated in the protection element (YT), where the aforementioned secondary fuel nozzle system v is intended to connect the elongated fuel tube ¢ to a fuel gas source at a pressure of no Less than > about 4.5 kPa (0 psi). Ai “high capacity radiant wall burner A—” 2 Jie wall burner —YA \ Cus (YY) fuel nozzle system impregnates as stated in protection element (NOx) low 7 mentioned for connecting the extended fuel tube secondary fuel nozzle system Y at a pressure not less than fuel gas elongated fuel tube ¢ 01 psi'). wall burner luminous A Jaa 4 ?-1 burner where the fuel nozzle system “YA” is impregnated as in protection element “NOx low” Y for connecting the secondary fuel nozzle system secondary fuel nozzle system 7 At a pressure not less than fuel gas with an elongated fuel tube ¢ (lbs/inch). About 10 kPa (V0) o “capacity high capacity radiant wall burner dade incinerator Mural -0 \ where the position of the upper end oy as stated in the protection element “NOx Low (7 inch) mentioned 1) is located at a distance of not less than approx. 7 cm ag Ul 7 The aforementioned nozzle on the nozzle ¢: “high capacity radiant wall burner A” xia wall burner “1” as mentioned in the protection element, where the position of the upper end is specified “low NOy 7 at a distance not more than approx. 9 inches (9 inches) from the ag 7 nozzle ia gall. from the ¢ “capacity radiant wall burner 1-YY slit wall burner where the tube includes The incendiary of as stated in the protection element (NOx low) Y connecting its upper curved portion mentioned on a curved portion burner tube Y The aforementioned L ¢ and lower 0 and where the aforementioned secondary fuel system ° includes a piece of pipe extending through the wall of the aforementioned curved part 1 of the incendiary tube, and the said piece of pipe is connected by Gaile connection with an upper end 7 of the tube Fuel tube YY 1 radiant wall burner high capacity “capacity Y low (NOx) as stated in the protection element Cua (FY) The mentioned piece extends from A tubes and the fuel tube said fuel tube primarily along said downstream portion ¢ axis of burner tube 1 4 ; (NOx) as stated in the Cua oF protection element. The aforementioned secondary fuel system 1 includes a piece of pipe that connects yall fluidly with the upper end of the upstream end of the fuel tube and extends the aforementioned piece Through 0 of the aforementioned 8 structure and through the aforementioned spud, and the aforementioned seal includes 1 a large number of nozzles orifices for ejection of fluid fuel, and the aforementioned nozzles are arranged around piece 1 of the aforementioned pipes. \ ©5 ?- radiant wall burner A" x Sed lan High "capacity Y Low (NOK in claim Cua) Said fuel includes v natural gas . natural gas 1-1 radiant wall burner high capacity capacity Y low (NOx as stated in Clause Cus) said fuel contains r hydrogen 'hydrogen' Ya ~YV 1 method for operating a high-power radiant wall burner with a low capacity Y »110 to heat a radiant surface adjacent to a combustion zone in a furnace chamber and includes the aforementioned ¢ method : refueling of a poor combustible fuel-air mixture; 1 Providing an elongated main nozzle with a longitudinal axis. A push the air-fuel mixture to flow outward in a radial direction from 9 said main nozzle; to the aforementioned combustion zone and generally 01 through the aforementioned radiating surface in the form of a circular pattern essentially surrounding the aforementioned main crater in a radial direction; Burning the said mixture in the said area; and VY discharging a stream of secondary fuel into the said kiln compartment and making it ¥ move in an outward direction Tage from the said radiating surface to a location in the said kiln compartment vo be Gj sme is separated from the aforementioned area and does not come into contact with it, provided that V1 is far enough away from the aforementioned area to allow the secondary fuel to be mixed with VY flue gases before returning to the area for combustion by the surplus amount of M oxygen in this region. High capacity ccapacity radiant wall burner A method of operating a radiant wall burner 8-1 that also involves obtaining a fuel-to-air ratio FY as stated in the NOx protective element Y of the fuel to air in the fuel-air mixture The aforementioned at level 6 of the mixture is less than its velocity when flowing radially, the flame speed, so that the flame velocity is ¢ mentioned; Thus, the flame that separates from the nozzle is produced towards the outside of the aforementioned ° ° during the combustion of the mixture. 1 1 4- Method of operating a radiant wall burner “x da high capacity Y capacity low” 210 as stated in Claim Cua (FY) fuels over 7 approximately 1 ./ of total fuel to the combustion zone 16- A method for operating a high-power radiant wall burner with a low capacity Y (NOx) as stated in the oF protection element, where the aforementioned secondary fuel 1 constitutes a percentage of not less than about 771 ¢ of the total fuel supplied to the .combustion zone 1) 6 — A method for operating a high-capacity Aa de 4 jaa radiant wall burner “low capacity Y” NO as stated in Claim JS Cus 0 mentioned secondary fuel Y A percentage of at least approx. 7250 ¢ of the total fuel supplied to the combustion zone. 1 7;- A method for operating a radiant wall burner with high capacity, capacity Y, low (NOx) as mentioned in the protection element (FY), where the mentioned secondary fuel 1 is supplied at the mentioned location by Through a secondary fuel nozzle ¢ extending through the aforementioned main nozzle. 1 “;- A method for operating a radiant wall burner with high capacity “capacity Y low” NOx as mentioned in the protection element Ya, where the mentioned secondary fuel v is supplied at the location The aforementioned via a secondary fuel nozzle ¢ releases a jet of fuel that penetrates the aforementioned pattern without being combusted. Yan 1 4 - The burner assembly of the radiant burner Ax" ia includes: Js hoe burner tube Y outlet end z 5 —> inlet end elongated burner conduit 7 apart The aforementioned stream is prepared and arranged to direct a poor gaseous mixture 0 with fuel that includes part of the total fluid fuel to be burned 1 and the accompanying oxygen from the aforementioned entry side to the aforementioned exit side; A main burner nozzle at the exit end of the aforementioned bridge A. The said incendiary nozzle shall have a central axis, a wall 9 extending around a cavity placed in its center, and a downstream end spaced 01 on the aforementioned exit from the culvert; The aforementioned main incendiary nozzle 11 is arranged and prepared to receive the aforementioned mixture from the duct in the aforementioned gap and redirect it 1 through a large number of apertures in the aforementioned wall and towards the combustion zone 7 in a transverse direction on the aforementioned axis; So that the aforementioned openings V4 are distributed around the aforementioned wall, and thus the mixed fale (A" a sal) towards Adlai (pal) 3 through the aforementioned apertures in the form of a flat, round pattern V1 surrounding the aforementioned wall and extending outwards Via a 'radiant surface' and VY a secondary fuel tube delivery system comprising \A an elongated fuel tube running along said axis and a secondary fuel nozzle 1 located At a lower end portion of the cfuel tube containing the fuel nozzle.' The aforementioned secondary fuel port has a secondary fuel port placed and arranged to drain 9 streams of secondary fuel and make it move in an outward direction fam from the aforementioned surface to a location axially spaced from the aforementioned combustion zone and does not touch gan, thus allowing the The secondary fuel is to mix with the flue gases before undergoing combustion, Yt, by an excess amount of air in the combustion zone. 1 As stated in claim 4 4; Also includes burner assembly 08-1 incendiary composition provides source for fuel-air mixture supply system Y-ruffle fuel-air mixture supply system for inlet end Poor combustible fuel-air mixture for insertion into the inlet end aforementioned; So that the fuel-burner conduit supply system is impregnated to obtain a poor ratio of fuel to air in the aforementioned Log ty-air mixture: low flame speed of the aforementioned fuel-air, and thus this mixture has a flame speed: To distribute Lie 2555) Shall apertures are pre-determined; and such that the nozzles 7 of said combustible fuel-air mixture are arranged in said transverse direction at A above the flame velocity predetermined for the mixture and in the initial velocity 9 at said nozzle; Where a round flame is formed that is separate from the nozzle pattern Ve, the combustion of the mixture. (£0 stated in claim 1 stated secondary fuel is pure secondary fuel nozzle system 1 fuel. ¢ NOy low capacity high capacity radiant wall burner —¢V \ Each of the Es us Tal mixture supply system as stated in the claim £0 (where Y main nozzle mentioned and fuel-air mixture supply system v mentioned so that the fuel-air mixture includes Said contains all the air needed to burn said fuel ¢ NOx Low ccapacity High capacity radiant wall burner A" a dia 8; In claim 47, where ¥ the ¥ The said fuel-air mixture supply system and the said main nozzle so that the said fuel-air mixture includes all the air needed to burn the said fuel. NOx low capacity radiant wall burner 4.1 Each of the Tu tay Loge Ty supply system as described in claim 46; Where the aforementioned fuel-air mixture supply system v mentioned so that the aforementioned fuel-air mixture includes no more than the main nozzle ¢ of the total fuel that is burned in the said burner. 1.00 ° radiant wall burner Asda 43 jaa 43 la - \ high capacity ccapacity low NOy Y as mentioned in the protection element L where the lay ag ends each of the v fuel-air mixture supply system fuel- The aforementioned air mixture supply system and the main nozzle: the aforementioned so that the aforementioned air-fuel mixture includes not more than 0 mh of the total fuel that burns in the aforementioned incinerator. NOx low capacity high capacity radiant wall burner Adie wall burner - 51 1 Each of the LT ae Ty supply system where cf is arranged as stated in the aforementioned Y protection element and the main nozzle fuel- air mixture supply system v mentioned so that said fuel-air mixture includes no more than main nozzle ¢ in said burner. Bn of the total fuel that Joo ° —0Y \ radiant wall burner A" a 5a high capacity ccapacity low NOy Y as stated in the protection element ofA where Tay tay bends each of the Lg v system The aforementioned fuel-air mixture supply system and the main nozzle The mentioned main nozzle t so that the said fuel-air mixture includes no more than 1°o of the total fuel that burns in the said burner. —0OF radiant wall burner 4" alia high capacity low capacity NOx Y as stated in claim 44 where the downstream end includes a nozzle 1 The main burner nozzle is on the hole and the extended fuel tube extends The said elongated fuel tube ¢ pivots through the cavity so that the fuel nozzle protrudes ° secondary through the aforementioned hole. NOx Low "capacity Ale radiant wall burner -4" elongated fuel tube As stated in the protection element ;;; Where the extended fuel tube extends Y 7 mentioned along the outer circumference of the .main burner nozzle 1 00— Eg burner assembly of the protective agent ;; where the mixture includes The aforementioned contains a mixture of gaseous fuel and air; It includes a tube structure The incendiary Y burner tube mentioned is a venturi tube that uses a stream of fuel The aforementioned gas to push a stream of air and thus form the aforementioned mixture 1- A burner assembly as stated in claim £6 (where the mixture includes said Y on a mixture of gaseous fuel and air; It includes a tube structure 1 The incendiary burner tube mentioned number 5 181 venturi tubes arranged To obtain a parallel flow and prepare each of the aforementioned venturi tubes ° It is absorbed to use Gia from the aforementioned gaseous fuel to push a stream of air and thus form 1 The aforementioned mixture in the form of a mixture of fuel and air is very poor in fuel. p -1/1 burner assembly according to protection element Ef, where the said elongated fuel tube J shell Y is placed outside the said main burner nozzle 1 and the secondary fuel port is placed said and arranges for the secondary fuel 1 to discharge at such a speed and in such a direction that at least a portion of the secondary fuel 0 penetrates said pattern to reach said location. 0A | radiant wall burner as stated in Claim 11, where Y arranges the aforementioned fuel-air mixture supply system 1 and prepares to supply the aforementioned mixture with all the air necessary for fuel combustion The aforementioned t. 1 4- radiant wall burner Asin, as mentioned in the oF protection element, where Y arranges the aforementioned fuel-air mixture supply system, Y, and prepares to supply the aforementioned mixture with all the air The aforementioned required for the combustion of the total fuel ¢ aforementioned. \ = method as stated in claim 15 wherein the fuel-air mixture supply system —— 1 said fuel-air mixture supply system comprises all the air required for the combustion of said fuel v total. -71-1 burner assembly as stated in claim ;)”; Where Y the poor gaseous mixture with said fuel includes all the oxygen needed y for the total combustion of the fuel. -17-1 burner assembly as stated in claim 01 where the poor gaseous mixture with said fuel includes all the air required for the total combustion of fuel Y. UY \ method of operating a radiant burner Aa be including: Discharge of a stream from a fuel-poor combustible mixture comprising 1 part of the total fuel to be burned and air in a radial direction from an elongated nozzle having a central axis to a combustion zone 0 surrounding the said nozzle In the form of a circular flat pattern 1 so that the said area is located in a furnace chamber next to a radiant surface Obtaining a fuel-poor air-to-fuel ratio in the aforementioned mixture at a level such that the flame velocity of the mixture is less than its velocity when it is discharged, Ve, to the aforementioned combustion zone; Thus, a flame is produced that is separate from the aforementioned nozzle 1 during the combustion of the mixture; “igniting the said mixture to form a separate, flat, round flame surrounding said crater in a radial direction and located adjacent to said radiating surface; and ¥ Draining a stream of secondary fuel into the aforementioned furnace compartment and making it move in an outward direction away from the said radiant surface to a location in the aforementioned furnace compartment that is axially spaced from the aforementioned area and does not come into contact with it (VY) so that the aforementioned site is far away SIS JS about the aforementioned area to allow the secondary VA fuel to mix with the flue gases before returning to the area Cua 0 is burned with an excess amount of oxygen present in it. a 1 45 Methods As Given in Claim Cua TY Said fuel-poor combustible mixture system Y comprises all of the air required for combustion of said total fuel. 1 5+- burner assembly as in claim £8 (where J Say 7 radiant surface mentioned is part of a refractory burner tile inserted into a furnace wall; and where said main burner nozzle ¢ extends through passageway ae in said slab. radiant surface J <a where AY is a method as mentioned in the claim -+7 1 Jaa inserted into a refractory burner tile from a refractory burner tile mentioned fe ja Y passageway mentioned through elongated nozzle 4 shal) of the oven; and where the orifice r extends in said slab “High capacity radiant wall burner AZ aia 4, Jaa Method for operating a burner 11-1 Secondary fuel LT <a where AF as stated in protection element NOx low Y of total fuel Supplied to zone 0 stated at least secondary fuel 1 -combustion zone combustion ¢ “capacity 4 lle radiant wall burner AZ a fa A method of operating a wall burner AZ a fa +8 where the secondary fuel forms a low TY +0, 1 as stated in protection Y to an area of 3 al Of the total fuel 0 mentioned no less than about secondary fuel Y -combustion zone combustion ¢ NOx low ccapacity high capacity radiant wall burner 4 se wall burner 4-1 burner each of Cua tube structure as stated in claim ; Y ‎Yat) said burner tube 1 and secondary fuel delivery system ¢ said JT SE) the amount of said secondary fuel discharged to said location 'not less than approximately 7700 of the total fuel supplied to the combustion zone .combustion zone 1 = V 1 radiant wall burner A = Se high capacity ccapacity low NOx Y as mentioned in Claim 14 Cua each of the burner tube structures are arranged said tube 1 and said ol) 8 3 secondary fuel delivery system 1 said such that the amount of said secondary fuel discharged to said location o constitutes not less than about 0 75 of the total fuel supplied to Combustion zone 0 combustion zone 1 —V) \ radiant wall burner high capacity low NOx Y as stated in the protection element ov where they include the Ep ded system and Said secondary fuel system is a piece of tube extending through the wall of said downstream portion ¢ of the cburner tube so that said piece ° is in fluid contact with the upstream end of the fuel tube —VY \ lle radiant wall burner A" = » fa The capacity ccapacity is low NOx Y as stated in the oF protection where the fitting is in the form of a bell 7 pic General. —VV \ radiant wall burner A" 2 Ja high capacity low capacity NOx Y as stated in protection FY which also includes the step of making the air-fuel mixture flow out of the nozzle The aforementioned main nozzle is at an initial speed of AA b initial velocity ¢ greater than the flame speed of the mixture; Thus, a separate round flame is formed when the mixture is combusted. 1 4- A high-power radiant wall burner with low “capacity” NOx 7 as stated in protection element 0, where the nozzle of the main burner Lie 4535, S3d main burner nozzle 7 is pierced to redirect the gaseous mixture At an initial velocity ¢ greater than the flame speed of the mixture” and thus the said round flame separates from the nozzle. 1 70- burner assembly as in claim £0 (where said Y fuel-air mixing system comprises at least one venturi tube and such that Le This 1 is arranged for a pipe so that the said gaseous fuel $ lady is used to push a stream of air ¢ and thus the aforementioned mixture is formed in the form of a mixture of fuel and air poor Tan with fuel. radiant wall burner as stated in Claim with where Y arranges and robs said 5 fuel-air mixing system of sell to supply said mixture with all the air needed for combustion of said total fuel. radiant wall burner As stated in claim Sim Vo Y, the Jala fuel-air mixing system together with said aforementioned Jala fuel-air mixing system provides said mixture v with all the air needed for the combustion of said total fuel. A method as stated in Claim AY, where the said mixture is a mixture of fuel and air that is very poor in fuel. the £9 1 7/9 method as given in protection alc YA wherein said mixture includes all the air required for the combustion of said total fuel. a