CN210398898U - Flat flame ultra-low NOx and CO emission full-automatic control gas burner - Google Patents
Flat flame ultra-low NOx and CO emission full-automatic control gas burner Download PDFInfo
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- CN210398898U CN210398898U CN201921309658.5U CN201921309658U CN210398898U CN 210398898 U CN210398898 U CN 210398898U CN 201921309658 U CN201921309658 U CN 201921309658U CN 210398898 U CN210398898 U CN 210398898U
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Abstract
The utility model discloses a flat flame ultralow NOxThe full-automatic CO emission control gas burner is arranged in a heating furnace and comprises a furnace oxygen content sensor, a furnace temperature sensor, a cylinder assembly, a fire basin brick, an outer air gun assembly, a center air gun assembly, an electronic ignition-ion fire detection integrated pilot burner, an electric air adjusting mechanism and a DCS control system. The utility model has a rectangular fire basin brick, a central air gun is arranged in the fire basin brick, outer air guns are arranged at two sides of the fire basin brick, the outer air guns and the central air gun are distributed along the long edge of the fire basin brick,the flame generated by the burner is flat flame, the flame does not float, is rigid, straight and powerful, the furnace tubes are uniformly heated, and the like, so that the burner is suitable for heating furnaces with short distance between the furnace tubes, in particular square box furnaces; solves the problems that the prior art adopts a circular flame burner, the flame easily licks the furnace tube, the furnace tube is coked, and the service life and the safe use of the furnace tube are influenced.
Description
Technical Field
The invention belongs to the field of petrochemical combustors, and particularly relates to flat flame ultralow NO which conforms to bottom combustion, side combustion and flat flame combustion, and fuel can be components with larger fuel heat value fluctuation such as natural gas, catalytic dry gas, self-produced dry gas and the likexAnd a CO emission full-automatic control gas burner.
Background
Most of petrochemical heating furnaces are square box furnaces, the distance between the furnace tubes is very short in order to save cost and space, and if a circular flame burner is adopted, flame easily licks the furnace tubes, so that the furnace tubes are coked, and the service life and the safe use of the furnace tubes are influenced; meanwhile, the emission standard of pollutants for petroleum refining industry (GB 31570 one 2015) published by the national environmental protection administration sets 2015-07-01 to be implemented, so that higher requirements for reducing the emission of NOx and CO are provided. The burner can not be adjusted in real time because of large fluctuation of fuel components of some heating furnaces, and workers need to adjust the burner constantly according to the fluctuation on site, so that the method is time-consuming, labor-consuming, worry-free and unsafe. Therefore, a new generation of flat ultralow NOx and CO emission full-automatic control gas burner is developed, the problems of furnace tube licking, ultralow NOx and CO emission and frequent burner adjustment by workers due to component fluctuation on site are solved, and the flat ultralow NOx and CO emission full-automatic control gas burner is safe and worry-saving.
Disclosure of Invention
The technical problem to be solved by the invention is to solve the above prior artThe defects of the technology provide the flat flame ultralow NO which can solve the problems of licking the furnace tube, realizing ultralow NOx and CO emission, and solving the trouble that workers frequently adjust the burner due to the fluctuation of components on site, and is safe and worry-savingxAnd a CO emission full-automatic control gas burner.
Flat flame ultralow NOxThe full-automatic CO emission control gas burner is arranged in a heating furnace and comprises a furnace oxygen content sensor, a furnace temperature sensor, a cylinder assembly, a fire basin brick, an outer air gun assembly, a center air gun assembly, an electronic ignition-ion fire detection integrated pilot burner, an electric air adjusting mechanism and a DCS control system.
The fire pan brick is arranged at the top of the barrel assembly and communicated with the interior of the barrel assembly, one end of the electronic ignition-ion fire detection integrated pilot burner and one end of the central air gun assembly sequentially penetrate through the bottom of the barrel assembly and the interior of the barrel assembly respectively and extend into the fire pan brick, the electric air regulating mechanism is arranged on the side face of the barrel assembly, and the hearth oxygen content sensor and the hearth temperature sensor are arranged in the hearth respectively.
The fire pan brick is of a hollow structure, the hollow part is a combustion air channel, and the fire pan brick can be disassembled into a left half and a right half, so that the fire pan brick is convenient to carry. The fire basin brick is cuboid, and two lateral surfaces on fire basin brick upper portion tilt to the splayed inwards, and the limit at two lateral surfaces places of fire basin brick leanin is the cuboid long limit, is equipped with two sets of symmetric distribution and the first burner port that is linked together with combustion-supporting air channel on the inclined plane, and the top surface of fire basin brick is equipped with two sets of symmetric distribution and the second burner port that is linked together with combustion-supporting air channel, and first burner port is linked together with the second burner port and a first burner port corresponds a second burner port, be equipped with two sets of symmetric distribution and the U type groove that link up on two lateral surfaces that fire basin brick lower part corresponds its long edge direction, the part that combustion-supporting air channel is higher than first burner port is cuboid, and outside air gun subassembly passes bottom, the inside of barrel subassembly, U type groove in proper order and stretches out outside the U type groove.
The electric air adjusting mechanism comprises an electric actuating mechanism and an air adjusting butterfly valve which are connected, and the DCS control system is respectively connected with the hearth oxygen content sensor, the hearth temperature sensor, the electric actuating mechanism, the outer air gun assembly, the central air gun assembly and the electronic ignition-ion fire detection integrated pilot burner.
In one embodiment, the outer air gun assembly comprises two groups of outer air guns, a U-shaped gas collecting pipe, an outer air gun gas inlet flange, an outer air gun gas metal hose and an outer air gun gas electromagnetic valve.
Two outside air guns symmetries set up on two U type arms of U type gas collecting pipe, the end that U type gas collecting pipe was kept away from to every outside air gun all passes the bottom of barrel subassembly in proper order, the inside of barrel subassembly, the U type groove stretches out outside the U type groove, and a U type groove corresponds an outside air gun, every outside air gun all is linked together with U type gas collecting pipe, the middle part of U type gas collecting pipe is linked together through outside air gun air inlet flange and outside air gun gas metal collapsible tube, be equipped with outside air gun gas solenoid valve on the outside air gun gas metal collapsible tube, DCS control system links to each other with outside air gun gas solenoid valve.
In one embodiment, the central air gun assembly comprises a group of central air guns, a central gas collecting pipe, a central air gun gas inlet flange, a central air gun gas metal hose and a central air gun gas electromagnetic valve.
A group of central air guns are distributed in the long edge direction of a fire pan brick and are equidistantly arranged on a central gas collecting pipe, the end, far away from the central gas collecting pipe, of each central air gun sequentially penetrates through the bottom of a barrel assembly, the inside of the barrel assembly extends into the fire pan brick, each central air gun is communicated with the central gas collecting pipe, the middle of the central gas collecting pipe is communicated with a central air gun gas metal hose through a central air gun gas inlet flange, a central air gun gas electromagnetic valve is arranged on the central air gun gas metal hose, and a DCS control system is connected with the central air gun gas electromagnetic valve.
In one embodiment, the electronic ignition-ion fire detection integrated pilot burner comprises an electrode, an explosion-proof junction box, a flame stabilizing tube, a pilot burner barrel, a mixer, a pilot burner connecting flange and a pilot burner gas metal hose which are sequentially communicated, a pilot burner gas electromagnetic valve is arranged on the pilot burner gas metal hose, a pilot burner nozzle is arranged in the flame stabilizing tube, the electrode is arranged in the flame stabilizing tube and the pilot burner barrel, the head of the electrode is arranged at the front end of the flame stabilizing tube, the tail of the electrode penetrates through the pilot burner barrel from the flame stabilizing tube to be connected with the explosion-proof junction box, and the DCS control system is respectively connected with the explosion-proof junction box and the pilot burner gas electromagnetic valve.
In one embodiment, the cylinder assembly comprises a noise reduction inner cylinder, a refractory fiber filling layer and an outer cylinder which are arranged in sequence from inside to outside.
In one embodiment, the bottom of the barrel assembly is provided with a viewing hole and an ignition hole.
In one embodiment, each outer air gun comprises an outer air gun nozzle and an outer air gun barrel, wherein the outer air gun nozzle is provided with an outer air gun spray hole, one end of the outer air gun barrel is welded with the outer air gun nozzle, and the other end of the outer air gun barrel is communicated with the U-shaped gas collecting pipe.
In one embodiment, each central air gun comprises a central air gun nozzle and a central air gun barrel, wherein a central air gun spray hole is formed in the central air gun nozzle, the central air gun nozzle is welded to one end of the central air gun barrel, and the other end of the central air gun barrel is communicated with the central gas collecting pipe.
In one embodiment, the outer air gun assembly accounts for 70-80% of the raw material ratio, and the central air gun assembly accounts for 20-30% of the raw material ratio.
In one embodiment, the flat flame ultra low NOxThe CO emission full-automatic control gas burner further comprises a fire pan brick base, and the fire pan brick is arranged at the top of the barrel assembly through the fire pan brick base.
Advantages and advantageous effects of the invention
1. The fire pan brick is cuboid, the central air gun is arranged in the fire pan brick, the outer air guns are arranged on two sides of the fire pan brick, the outer air guns and the central air gun are distributed along the long edge of the fire pan brick, flame generated by the burner is flat flame, the flame does not float, is rigid, straight and powerful, furnace tubes are uniformly heated, and the like, and the fire pan brick is suitable for heating furnaces with short distance between the furnace tubes, particularly square box furnaces; solves the problems that the prior art adopts a circular flame burner, the flame easily licks the furnace tube, the furnace tube is coked, and the service life and the safe use of the furnace tube are influenced.
2. The structure of the fire pan brick, the central combustion gun assembly and the outer air gun assembly can realize ultralow NOx and CO combustion emission, and the design of the DCS and the hearth oxygen content sensor can realize automatic and accurate adjustment.
3. The central air gun combusts in an oxygen-enriched mode inside the fire pan brick, the outer air gun combusts in a poor mode outside the fire pan brick, fuel is combusted in a grading mode, the central temperature of the fire pan is restrained, and meanwhile NOx is restrained from being generated. The invention well solves the troubles caused by fuel component fluctuation, the oxygen content sensor of the hearth monitors the oxygen content change of the hearth caused by the fuel component fluctuation in real time, the electric actuating mechanism is linked with the temperature sensor of the hearth and the oxygen content sensor of the hearth through the DCS control system, the adjustment can be made according to the temperature and the oxygen content of the hearth, the full combustion of fuel is met, when the oxygen content is overhigh, the reasonable oxygen content is set in advance through the DCS control system, the air adjusting butterfly valve is automatically adjusted, the oxygen content is kept in a reasonable interval all the time, the phenomenon that the heat efficiency in the furnace is reduced due to overhigh oxygen content and the phenomenon that the CO in the furnace is increased due to overlow oxygen content are effectively controlled, and the combustion emission of ultralow NOx and CO is kept.
4. The fire pan brick can be disassembled into two halves, so that the fire pan brick is convenient to carry; meanwhile, the excessive blocking of the fire pan brick is avoided, the integrity of the fire pan brick is kept, and the shape of the flame is more regular. After the fire basin bricks are spliced, two outer side surfaces at the upper parts of the fire basin bricks are inwards inclined to form a splayed shape, so that the gas of the air guns at two sides can be favorably mixed and combusted at the upper parts of the fire basin bricks, and the flame can be more favorably flat; two groups of U-shaped grooves are arranged on the outer side surface of the lower part of the fire basin brick in the long edge direction, the number of the U-shaped grooves is determined according to the number of the outer air guns, the outer air gun insertion holes are convenient, the interior of the fire basin brick is of a hollow structure, and the structure enables the inner air guns and the outer air guns to form fuel staged combustion, so that the generation of NOx is inhibited; be equipped with first burner port on the fire pan brick inclined plane, the top is equipped with the second burner port, and first burner port communicates with each other and still is linked together with combustion-supporting air channel with the second burner port, and when the combustor burning, central air gun flame makes outside air gun more stable burning through first burner port and second burner port, avoids flame to take off a fire burning.
5. The design of the outer air gun component and the center air gun component of the invention is as follows: the two groups of outer air guns are symmetrically arranged on the two U-shaped arms of the U-shaped gas collecting tube, so that the interference of the central air gun and the pilot burner is avoided. The central air gun assembly also avoids the interference of the pilot light. The outer air gun is a main air gun, the central air gun is an auxiliary air gun, the fuel ratio of the outer air gun assembly is 70% -80%, the fuel ratio of the central air gun assembly is 20% -30%, staged combustion is formed under the action of the fire pan brick, the central air gun forms oxygen-enriched combustion, and the outer air gun forms anaerobic combustion, so that the central temperature of flame is reduced, and generation of NOx is inhibited.
6. The design of the cylinder component comprises a noise reduction inner cylinder, a refractory fiber filling layer and an outer cylinder which are sequentially arranged from inside to outside; the design of noise elimination and low heat conduction is adopted, the heat insulation and preservation performance is excellent, and the outward heat dissipation loss of the burner box body is reduced to the minimum, so that the purposes of high efficiency, energy conservation, ultralow NOx and CO pollution emission and low noise and environmental protection are achieved.
Drawings
Fig. 1 is a front sectional view of the present invention.
Fig. 2 is a partial side sectional view of the present invention.
Fig. 3 is a bottom view of the present invention.
FIG. 4 is a front view of the outboard air gun assembly of the present invention.
Fig. 5 is a schematic structural diagram of a U-shaped gas collecting tube of the present invention.
Fig. 6 is a side view of the heart air gun assembly of the present invention.
Fig. 7 is a schematic structural view of the central gas header of the present invention.
Fig. 8 is a front view of a firebrick.
Fig. 9 is a top view of a firebrick.
Figure 10 is a side view of a firebrick.
Fig. 11 is a schematic structural view of an electronic ignition-ion fire detection integrated pilot burner.
Fig. 12 is a use state diagram of the present invention.
Detailed Description
In order to facilitate an understanding of the invention, a full description thereof will be given below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
Referring to FIGS. 1 to 12, a flat flame ultra low NOxThe full-automatic CO emission control gas burner is arranged in a heating furnace and comprises a hearth oxygen content sensor 1, a hearth temperature sensor 80, a cylinder component 2, a fire pan brick 3, an outer side air gun component 4, a center air gun component 5, an electronic ignition-ion fire detection integrated pilot burner 6, an electric air regulating mechanism 7 and a DCS control system 8.
Wherein, the fire pan brick 3 is arranged at the top of the cylinder component 2 and communicated with the inside of the cylinder component 2. One end of the electronic ignition-ion fire detection integrated pilot burner 6 and one end of the central air gun assembly 5 respectively penetrate through the bottom of the barrel assembly 2 and the inside of the barrel assembly 2 in sequence and extend into the fire basin brick 3. The electric air adjusting mechanism 7 is arranged on the side surface of the cylinder component 2, and the hearth oxygen content sensor 1 and the hearth temperature sensor 80 are respectively arranged in the hearth 100.
Specifically, the fire pan brick 3 is of a hollow structure, and the hollow part is a combustion air channel 9. The fire pan brick 1 can be disassembled into a left half and a right half, and is convenient to carry. The fire basin brick 3 is cuboid, and two lateral surfaces on the upper portion of the fire basin brick 3 are inwards inclined to form a splayed shape, the edge where the two lateral surfaces of the inward inclined fire basin brick 3 are located is a cuboid long edge, and two groups of first combustion holes 10 which are symmetrically distributed and communicated with the combustion air channel 9 are arranged on the inclined surface. The top surface of the fire basin brick 3 is provided with two groups of second combustion holes 11 which are symmetrically distributed and communicated with the combustion air channel 9. The first combustion holes 10 communicate with the second combustion holes 11 and one first combustion hole 10 corresponds to one second combustion hole 11. Two groups of symmetrically distributed and communicated U-shaped grooves 12 are arranged on two outer side surfaces of the lower part of the fire basin brick 3 corresponding to the long side direction of the fire basin brick, and the part of the combustion-supporting air channel 9 higher than the first combustion hole 10 is in a cuboid shape. The outer air gun assembly 4 sequentially penetrates through the bottom of the barrel assembly 2, the inside of the barrel assembly 2 and the U-shaped groove 12 and extends out of the U-shaped groove 12.
The electric air regulating mechanism 7 comprises an electric actuating mechanism 13 and an air regulating butterfly valve 14 which are connected. The DCS control system 8 is respectively connected with the hearth oxygen content sensor 1, the hearth temperature sensor 80, the electric actuating mechanism 13, the outer air gun assembly 4, the central air gun assembly 5 and the electronic ignition-ion fire detection integrated pilot burner 6.
Referring to fig. 1, 4 and 5, the outer air gun assembly 4 includes two sets of outer air guns 15, a U-shaped manifold 16, an outer air gun inlet flange 17, an outer air gun gas metal hose 18, and an outer air gun gas solenoid valve 19. In this embodiment 1, the set of outer air guns 15 includes 3 outer air guns 15, and the set of outer air guns 15 includes 6 outer air guns 15.
Specifically, two sets of outer air guns 15 are symmetrically arranged on two U-shaped arms of a U-shaped gas collecting pipe 16. The end of each outer air gun 15 far away from the U-shaped gas collecting pipe 16 sequentially penetrates through the bottom of the cylinder assembly 2, the inside of the cylinder assembly 2 and the U-shaped groove 12 to extend out of the U-shaped groove 12, and one U-shaped groove 12 corresponds to one outer air gun 15. Each outer air gun 15 is connected to a U-shaped gas manifold 16. The middle part of the U-shaped gas collecting pipe 16 is communicated with an outer air gun gas metal hose 18 through an outer air gun gas inlet flange 17. An outer air gun gas electromagnetic valve 19 is arranged on the outer air gun gas metal hose 18, and the DCS control system 8 is connected with the outer air gun gas electromagnetic valve 19.
Referring to fig. 2, 6 and 7, the center air gun assembly includes a set of center air guns 20, a center gas manifold 21, a center air gun inlet flange 22, a center air gun gas metal hose 23, and a center air gun gas solenoid valve 24. In this embodiment 1, the set of center air guns 20 includes 2 center air guns 20.
Specifically, a group of central air guns 20 are distributed along the long side direction of the fire pan brick 3 and are equidistantly arranged on a central gas collecting pipe 21. The end of each central air gun 20 far away from the central gas collecting pipe 21 sequentially penetrates through the bottom of the cylinder assembly 2 and the inside of the cylinder assembly 2 and extends into the fire pan brick 3. Each central air gun 20 is in communication with a central gas manifold 21. The middle part of the central gas collecting pipe 21 is communicated with a central gas gun gas metal hose 23 through a central gas gun gas inlet flange 22. The central air gun gas metal hose 23 is provided with a central air gun gas electromagnetic valve 24, and the DCS control system 8 is connected with the central air gun gas electromagnetic valve 24.
Referring to fig. 1, the electronic ignition-ion fire detection integrated pilot burner 6 comprises an electrode 25, an explosion-proof junction box 26, a flame stabilizing tube 27, a pilot burner barrel 28, a mixer 29, a pilot burner connecting flange 30 and a pilot burner gas metal hose 31 which are sequentially communicated. The metal gas hose 31 of the pilot burner is provided with a pilot burner gas electromagnetic valve 32. The flame stabilizing tube 27 is internally provided with a pilot burner nozzle 33. The electrode 25 is arranged in the flame stabilizing tube 27 and the torch tube 28, the head of the electrode 25 is arranged at the front end of the flame stabilizing tube 27, and the tail of the electrode 25 passes through the torch tube 28 from the flame stabilizing tube 27 to be connected with the explosion-proof junction box 26. The DCS control system 8 is connected to the explosion-proof junction box 26 and the pilot burner gas solenoid valve 32, respectively.
The cylinder component 2 comprises a noise reduction inner cylinder 34, a refractory fiber filling layer 35 and an outer cylinder 36 which are arranged from inside to outside in sequence. The bottom of the barrel assembly 2 is provided with a fire observation hole 37 and an ignition hole 38.
Specifically, each outer air gun 15 includes an outer air gun spray head 151 and an outer air gun barrel 152. An outer air gun spray hole is formed in the outer air gun spray head 151, one end of the outer air gun barrel 152 is welded with the outer air gun spray head 151, and the other end of the outer air gun barrel is communicated with the U-shaped gas collecting pipe 16.
Specifically, each central air gun 20 includes a central air gun nozzle 201 and a central air gun barrel 202, a central air gun nozzle hole is formed in the central air gun nozzle 201, the central air gun nozzle 201 is welded to one end of the central air gun barrel 202, and the other end of the central air gun barrel is communicated with the central gas collecting pipe 21.
Wherein, the outer air gun component 4 accounts for 70-80% of the raw material ratio, and the central air gun component 5 accounts for 20-30% of the raw material ratio. The firebrick 3 is arranged at the top of the barrel component 2 through a firebrick base 90.
Working principle and working process of the invention
When the electronic ignition-ion fire detection integrated pilot burner 6 ignites the central air gun 20, oxygen-enriched combustion is formed inside, the flame of the central air gun 20 is sprayed on the first combustion hole 10 and the second combustion hole 11 of the fire basin brick 3 to form stable basic flame, one part of the central flame is sprayed outwards at the first combustion hole 10 and the second combustion hole 11 and ignites the outer air guns 15 at the two sides of the fire basin brick 3, the fuel of the outer air guns 15 is converged with the central flame at the upper end of the fire basin brick 3 along the inclined plane at the outer side of the fire basin brick 3 to form staged combustion, NOx generation is effectively inhibited, and due to the spraying and guiding effects of the fuel of the outer air guns 15, the flue gas at the two sides of the fire basin brick 3 is involved in the flame combustion to form flue gas backflow, further inhibited NOx generation, ultralow NOx emission is formed, and stable combustion is achieved.
The outer air gun gas electromagnetic valve 19, the central air gun gas electromagnetic valve 24 and the pilot burner gas electromagnetic valve 32 are controlled by the DCS control system 8 to correspond to the gas flow.
The fuel gas of the integrated pilot burner 6 of electronic ignition-ion fire detection is delivered and supplied by the pilot burner gas metal hose 31. The fuel gas of the outer air gun assembly 4 is supplied by the outer air gun gas metal hose 18 and enters each outer air gun barrel 202 through the U-shaped gas collecting pipe 16. The fuel gas of the central air gun assembly 5 is supplied by the central air gun fuel metal hose 23 and enters each central air gun barrel 202 through the central gas collecting pipe 21.
Advantages and advantageous effects of the invention
1. The fire pan brick 3 is cuboid, the central air gun 20 is arranged in the fire pan brick 3, the outer air guns 15 are arranged at two sides of the fire pan brick 3, the outer air guns 15 and the central air guns 20 are distributed along the long edge of the fire pan brick 3, flame generated by a burner is flat flame, the flame does not float, the flame is rigid, straight and powerful, furnace tubes are uniformly heated, and the like, so that the fire pan brick is suitable for heating furnaces with shorter distance between the furnace tubes, particularly square box furnaces; solves the problems that the prior art adopts a circular flame burner, the flame easily licks the furnace tube, the furnace tube is coked, and the service life and the safe use of the furnace tube are influenced.
2. The structure of the fire pan brick 3, the central combustion gun assembly 5 and the outer air gun assembly 4 adopted by the invention can realize ultralow NOx and CO combustion emission, and the design of the DCS control system 8 and the hearth oxygen content sensor 1 can realize automatic and accurate adjustment.
3. The central air gun 20 combusts oxygen-enriched in the interior of the fire basin brick 3, the outer air guns 15 combusts poor in the outer side of the fire basin brick 3, fuel is combusted in a staged mode, the central temperature of the fire basin brick 3 is restrained, and meanwhile NOx is restrained from being generated. The invention well solves the troubles caused by fuel component fluctuation, the oxygen content sensor 1 of the hearth monitors the oxygen content change of the hearth caused by the fuel component fluctuation in real time, the electric actuator 13 is linked with the hearth temperature sensor 80 and the oxygen content sensor 1 of the hearth through the DCS control system 8, the adjustment can be made according to the temperature and the oxygen content of the hearth to meet the requirement of full combustion of fuel, when the oxygen content is overhigh, the reasonable oxygen content is set in advance through the DCS control system 8, the electric actuator 13 automatically adjusts the air adjusting butterfly valve 14 to keep the oxygen content in a reasonable interval all the time, thereby effectively controlling the phenomenon that the heat efficiency in the furnace is reduced due to overhigh oxygen content and the phenomenon that the CO in the furnace is increased due to overlow oxygen content and keeping the combustion emission of ultralow NOx and CO And (5) stable production.
4. The fire pan brick 3 can be disassembled into two parts, so that the fire pan brick is convenient to carry; meanwhile, the excessive partitioning of the fire pan brick 3 is avoided, the integrity of the fire pan brick 3 is kept, and the flame shape is more regular. After the fire pan bricks 3 are spliced, two outer side surfaces on the upper parts of the fire pan bricks 3 are inwards inclined to form a splayed shape, so that the gas of the air guns on the two sides can be favorably mixed and combusted on the upper parts of the fire pan bricks 3, and the flame can be more favorably flat; two groups of U-shaped grooves 12 are arranged on the outer side face of the lower portion of the fire pan brick 3 in the long edge direction, the number of the U-shaped grooves 12 is determined according to the number of the outer air guns 15, the insertion holes of the outer air guns 15 are convenient, the interior of the fire pan brick 3 is of a hollow structure, and the structure enables the inner air guns and the outer air guns to form fuel staged combustion, so that NOx generation is inhibited; the inclined surface of the fire basin brick 3 is provided with a first combustion hole 10, the top of the fire basin brick 3 is provided with a second combustion hole 10, the first combustion hole 10 is communicated with the second combustion hole 11 and is also respectively communicated with a combustion-supporting air channel 9, when the burner burns, the flame of the central air gun 20 enables the outer air gun 15 to burn more stably through the first combustion hole 10 and the second combustion hole 11, and the flame is prevented from burning off.
5. The design of the outer air gun assembly 4 and the center air gun assembly 5 of the invention: the two groups of outer air guns 15 are symmetrically arranged on two U-shaped arms of the U-shaped gas collecting pipe 16, so that the interference of the central air gun 20 and the electronic ignition-ion fire detection integrated pilot burner 6 is avoided. The central air gun assembly 5 is arranged to avoid the interference of the electronic ignition-ion fire detection integrated pilot burner 6. The outer air gun 15 is a main air gun, the central air gun 20 is an auxiliary air gun, the fuel proportion of the outer air gun assembly 4 is 70% -80%, the fuel proportion of the central air gun assembly 5 is 20% -30%, staged combustion is formed under the action of the fire basin brick 3, the central air gun 20 forms oxygen-enriched combustion, and the outer air gun 15 forms anaerobic combustion, so that the central temperature of flame is reduced, and generation of NOx is inhibited.
6. According to the design of the cylinder component 2, the cylinder component 2 comprises a noise reduction inner cylinder 34, a refractory fiber filling layer 35 and an outer cylinder 36 which are sequentially arranged from inside to outside; the design of noise elimination and low heat conduction is adopted, the heat insulation and preservation performance is excellent, and the outward heat dissipation loss of the burner box body is reduced to the minimum, so that the purposes of high efficiency, energy conservation, ultralow NOx and CO pollution emission and low noise and environmental protection are achieved.
Advantages and advantageous effects of the invention
The above-mentioned embodiments only express one embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the attached drawings.
Claims (10)
1. Flat flame ultralow NOxThe full-automatic CO emission control gas burner is arranged in a heating furnace and is characterized by comprising a furnace oxygen content sensor, a furnace temperature sensor, a barrel assembly, a fire pan brick, an outer air gun assembly, a center air gun assembly, an electronic ignition-ion fire detection integrated pilot burner, an electric air regulating mechanism and a DCS control system, wherein the fire pan brick is arranged at the top of the barrel assembly and communicated with the inside of the barrel assembly;
the fire pan brick is of a hollow structure, the hollow part is a combustion air channel, the fire pan brick can be disassembled into a left half and a right half, and is convenient to carry, the fire pan brick is of a cuboid shape, two outer side surfaces on the upper part of the fire pan brick are inwards inclined to form a splayed shape, the edge where the two outer side surfaces of the inwards inclined fire pan brick are arranged is a cuboid long edge, first combustion holes which are symmetrically distributed and communicated with the combustion air channel are arranged on the inclined surface, second combustion holes which are symmetrically distributed and communicated with the combustion air channel are arranged on the top surface of the fire pan brick, the first combustion holes are communicated with the second combustion holes, one first combustion hole corresponds to one second combustion hole, two groups of U-shaped grooves which are symmetrically distributed and communicated are arranged on the two outer side surfaces of the lower part of the fire pan brick corresponding to the long edge direction of the fire pan brick, the part of the combustion air channel higher than the first combustion holes is of the, The U-shaped groove extends out of the U-shaped groove inside the barrel assembly;
the electric air adjusting mechanism comprises an electric actuating mechanism and an air adjusting butterfly valve which are connected, and the DCS control system is respectively connected with the hearth oxygen content sensor, the hearth temperature sensor, the electric actuating mechanism, the outer air gun assembly, the central air gun assembly and the electronic ignition-ion fire detection integrated pilot burner.
2. The flat flame ultra low NO of claim 1xThe full-automatic control gas burner for CO emission is characterized in that
The outer air gun assembly comprises two groups of outer air guns, a U-shaped gas collecting pipe, an outer air gun gas inlet flange, an outer air gun gas metal hose and an outer air gun gas electromagnetic valve;
two outside air guns symmetries set up on two U type arms of U type gas collecting pipe, the end that U type gas collecting pipe was kept away from to every outside air gun all passes the bottom of barrel subassembly in proper order, the inside of barrel subassembly, the U type groove stretches out outside the U type groove, and a U type groove corresponds an outside air gun, every outside air gun all is linked together with U type gas collecting pipe, the middle part of U type gas collecting pipe is linked together through outside air gun air inlet flange and outside air gun gas metal collapsible tube, be equipped with outside air gun gas solenoid valve on the outside air gun gas metal collapsible tube, DCS control system links to each other with outside air gun gas solenoid valve.
3. The flat flame ultra low NO of claim 1xThe full-automatic control gas burner for CO emission is characterized in that
The central air gun assembly comprises a group of central air guns, a central gas collecting pipe, a central air gun gas inlet flange, a central air gun gas metal hose and a central air gun gas electromagnetic valve;
a group of central air guns are distributed in the long edge direction of a fire pan brick and are equidistantly arranged on a central gas collecting pipe, the end, far away from the central gas collecting pipe, of each central air gun sequentially penetrates through the bottom of a barrel assembly, the inside of the barrel assembly extends into the fire pan brick, each central air gun is communicated with the central gas collecting pipe, the middle of the central gas collecting pipe is communicated with a central air gun gas metal hose through a central air gun gas inlet flange, a central air gun gas electromagnetic valve is arranged on the central air gun gas metal hose, and a DCS control system is connected with the central air gun gas electromagnetic valve.
4. The flat flame ultra low NO of claim 1xThe full-automatic control gas burner for CO emission is characterized in that
The electronic ignition-ion fire detection integrated pilot burner comprises an electrode, an explosion-proof junction box, a pilot burner tube, a mixer, a pilot burner connecting flange and a pilot burner gas metal hose which are sequentially communicated, a pilot burner gas electromagnetic valve is arranged on the pilot burner gas metal hose, a pilot burner nozzle is arranged in the pilot burner tube, the electrode is arranged in the pilot burner tube and the pilot burner tube, the head of the electrode is arranged at the front end of the pilot burner tube, the tail of the electrode penetrates through the pilot burner tube from the pilot burner tube to be connected with the explosion-proof junction box, and a DCS control system is respectively connected with the explosion-proof junction box and the pilot burner gas electromagnetic valve.
5. The flat flame ultra low NO of claim 1xThe full-automatic control gas burner for CO emission is characterized in that
The cylinder component comprises a noise reduction inner cylinder, a refractory fiber filling layer and an outer cylinder which are sequentially arranged from inside to outside.
6. The flat flame ultra low NO of claim 1xThe full-automatic control gas burner for CO emission is characterized in that
In addition, the bottom of the barrel component is provided with an ignition hole and an ignition hole.
7. The flat flame ultra low NO of claim 2xThe full-automatic control gas burner for CO emission is characterized in that
Each outer air gun comprises an outer air gun nozzle and an outer air gun barrel, an outer air gun spray hole is formed in the outer air gun nozzle, the outer air gun nozzle is welded to one end of the outer air gun barrel, and the other end of the outer air gun barrel is communicated with the U-shaped gas collecting pipe.
8. The flat flame ultra low NO of claim 3xThe full-automatic control gas burner for CO emission is characterized in that
Each central air gun comprises a central air gun nozzle and a central air gun barrel, a central air gun spray hole is formed in the central air gun nozzle, the central air gun nozzle is welded to one end of the central air gun barrel, and the other end of the central air gun barrel is communicated with the central gas collecting pipe.
9. The flat flame ultra low NO of claim 1xThe full-automatic control gas burner for CO emission is characterized in that the outer air gun component accounts for 70% -80% of the raw material ratio, and the central air gun component accounts for 20% -30% of the raw material ratio.
10. The flat flame ultra low NO of claim 1xThe full-automatic control gas burner for CO emission is characterized in that the flat flame ultralow NOxThe CO emission full-automatic control gas burner further comprises a fire pan brick base, and the fire pan brick is arranged at the top of the barrel assembly through the fire pan brick base.
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|---|---|---|---|
| CN201921309658.5U CN210398898U (en) | 2019-08-13 | 2019-08-13 | Flat flame ultra-low NOx and CO emission full-automatic control gas burner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921309658.5U CN210398898U (en) | 2019-08-13 | 2019-08-13 | Flat flame ultra-low NOx and CO emission full-automatic control gas burner |
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| CN201921309658.5U Active CN210398898U (en) | 2019-08-13 | 2019-08-13 | Flat flame ultra-low NOx and CO emission full-automatic control gas burner |
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| Country | Link |
|---|---|
| CN (1) | CN210398898U (en) |
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2019
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Flat flame ultra-low NOx and CO emission fully automatic control gas burner Effective date of registration: 20220329 Granted publication date: 20200424 Pledgee: Agricultural Bank of China Limited Yueyang dongmaoling sub branch Pledgor: YUEYANG MAPOWER THERMPROCESS & ELECTROMAGNETIC TECHNOLOGY Co.,Ltd. Registration number: Y2022980003302 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230425 Granted publication date: 20200424 Pledgee: Agricultural Bank of China Limited Yueyang dongmaoling sub branch Pledgor: You Shuhuai|YUEYANG MAPOWER THERMPROCESS & ELECTROMAGNETIC TECHNOLOGY Co.,Ltd. Registration number: Y2022980003302 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |