CN207622017U - A kind of low NOx high heating values gas burner - Google Patents

Abstract

The utility model is related to a kind of low NOx high heating values gas burners, it include inside and outside aditus laryngis, by main auxiliary combustion air channel, three-level including interior, domestic and abroad air nozzle supplies building blocks of function, for two level including inside and outside gas gun for combustion gas building blocks of function, Reasonable Arrangement has the front panel of air delivery member mounting hole.In gas gun pipette tips it is uniformly distributed it is close be equipped with it is preceding to spray orifice and lateral spray orifice, using air and combustion gas, dislocation is uniformly distributed in pairs supplies gas pattern to primary zone for two level respectively, it is uniformly mixed with air convenient for combustion gas, carry out the dense burning of ultralow NOx generation amount, it combines again and uses third level blowing model near cavity wall, not sufficiently combusted fraction combustion gas in primary zone is set to carry out helping to improve the light burning of combustion gas burn-out degree in the region of this combustion air abundance, realize CO zero-emissions, the emissions standards that high heating value gas fired-boiler reaches low nitrogen and discharged without CO can be ensured on the whole, it provides the foundation guarantee for application of the high heating value combustion gas on gas fired-boiler.

Description

A kind of low NOx high heating values gas burner

Technical field

The utility model is related to gas fired-boiler heater element technical field, especially a kind of low NOx high heating values fuel gas buring Device.

Background technology

NOx is a kind of important atmosphere pollution, is one of the arch-criminal for causing acid rain, haze.As China controls environmental protection The increasing of reason dynamics and going deep into for energy-saving and emission-reduction policy, it is also increasingly stringent for the limitation of industrial combustion gas emission of NOx of boiler amount.Mesh The NOx emission concentration of popular natural gas low NO is generally 100mg/Nm on preceding domestic and international market³Left and right, it is clear that cannot Suitable for haze always areas such as more serious China Beijing.From on 07 01st, 2015, Beijing was to creating gas-fired boiler The NOx emission concentration of stove is proposed 30mg/Nm³Most strict standard.For this purpose, industry carries out in terms of boiler flue gas combustion technology It largely probes into and innovates, the low nitrogen burnings ancillary technique such as flue gas recirculation, burnout degree occur, though part high fever can be made The concentration of emission of value gas fired-boiler NOx reaches discharge standard, but generally existing construction investment is huge, up to standard difficult, overall The shortcomings of success rate is relatively low, so, up to the present, can really NOx be made to reach 30mg/Nm³The producer of ultralow nitrogen discharged standard It is very few.It traces it to its cause, it should closely related with the structure and fuel characteristic of burner.According to common knowledge, fuel combustion The NOx of generation mainly divides into thermal NO x and fuel type NOx, and natural gas class high heating value combustion gas generates in combustion Mainly thermal NO x, and largely generated when temperature is higher than 1500 DEG C.Accordingly, the key solved the problems, such as should be： How by rationally designing burner, it is allowed to that structure is more scientific and reasonable, to ensure burning fully and the basis of high efficient and reliable On, it is reduced as far as the generation of localized high temperature regions point in burner hearth, so that high heating value combustion gas and combustion air is uniformly mixed, burning Fully, the NOx discharge to inhibit the production quantity of NOx in combustion process, reduce high heating value gas fired-boiler.And existing high fever It is worth high heating value gas burner used in gas fired-boiler, has substantially been all made of the side that combustion gas and combustion air are sent into classification Method is generally coaxially arranged with two layers of several combustion air nozzle and one layer of several gas gun, and in the rifle of gas gun It is also equipped with several larger gas jet orifices convenient for liquidating with combustion air on head, but not fine enough generally there are being classified, supplies Gas is uneven, be unable to reach high heating value combustion gas and combustion air uniformly mix, the effect of abundant completely burned, thus cause in burner hearth The localized high temperature regions point of generation is relatively more, to which the thermal NO x amounts generated are also more.So generally there are structures to owe Scientific and reasonable, NOx discharge is difficult to the problems such as up to standard, considers to owe ideal from economy and point of view of practicability.Thus having very much must Structure is advanced optimized on the basis of existing high heating value combustion gas low NO, the plenum system of combustion gas and combustion air is made It is further improved and innovates, effectively to refine the classification air inlet precision of combustion gas and combustion air, create and be convenient for combustion gas and combustion-supporting sky Gas gas supply is uniformly, mixing is abundant and is convenient for the environmental condition of completely burned, to realize the part reduced to the maximum extent in burner hearth High-temperature area point, the NOx amount value generated when being worked using the high heating value gas fired-boiler of low NO is lower, can reach conscientiously Waste gas emission standard as defined in environmental protection administration.

Invention content

The purpose of this utility model is to overcome the shortcomings of present in existing high heating value gas burner, provides a kind of structure Relatively rationally, it is uniformly mixed in burner hearth convenient for combustion gas and combustion air, helps ensuring that fuel gas buring is reliable and high It is reduced or avoided on the basis of effect and generates localized high temperature regions point in burner hearth, be conducive to the life of NOx during inhibition fuel gas buring Cheng Liang, to effectively reduce the low NOx high heating values gas burner of emission of NOx of boiler amount.

The low NOx high heating values gas burner of the utility model, main body include that interior aditus laryngis, outer aditus laryngis, combustion air are logical Road, air nozzle, gas gun and front panel, it is characterised in that；Interior aditus laryngis, outer aditus laryngis and the setting of combustion air channel In annular shape, within the center line of aditus laryngis be axle center, be sequentially coaxially arranged from inside to outside；The combustion air channel is by being located at Ring cavity between interior aditus laryngis and outer aditus laryngis is constituted, and includes the main combustion air channel of inner aditus laryngis outer wall side and outer aditus laryngis The auxiliary combustion air channel of internal chamber wall side；The air nozzle includes interior air nozzle, middle air nozzle and outer space Gas nozzle；The gas gun includes interior gas gun and outer gas gun；Plate body is in flat-disk before described Shape is provided with the mounting hole A of interior aditus laryngis on center, be disposed on the loop line A of diameter d1 in peripheral disk, The mounting hole B of the isometrical several interior gas guns being uniformly arranged on the loop line B of diameter d2, isometrical is uniformly arranged The mounting hole C of several interior air nozzles, on the loop line C of diameter d3, isometrical several outer gas guns being uniformly arranged Mounting hole D is located at diameter on the loop line D of diameter d4, the mounting hole E of the isometrical several middle air nozzles being uniformly arranged On the loop line E of d5, the mounting hole F of the isometrical several outer air nozzles being uniformly arranged；Wherein：The loop line of the diameter d1 A, the loop line D of the loop line B of diameter d2, the loop line C of diameter d3 and diameter d4 are centered on axle center, sequentially coaxially on demand Diameter is divided to be arranged on front panel corresponding with main combustion air passage area in ring cavity；The loop line E of the diameter d5 is set It sets on front panel corresponding with auxiliary combustion air passage area described in ring cavity；The installation of the interior gas gun The setting quantity of hole B is corresponding with the setting quantity of mounting hole C of interior air nozzle to be consistent；The mounting hole of the outer gas gun The setting quantity of D is corresponding with the setting quantity of mounting hole E of interior air nozzle to be consistent；The mounting hole B of the interior gas gun With the mutual radial misalignments in installation position of the mounting hole D of outer gas gun；The setting of the mounting hole C of the interior air nozzle Position and the installation position of the mounting hole B of interior gas gun mutually radially it is corresponding, in pairs close to；The peace of the interior air nozzle Fill installation position and the installation position of the mounting hole D of outer gas gun of hole E mutually radially it is corresponding, in pairs close to；Described is interior Air nozzle and middle air nozzle constitute the first order and second level gas supply in the gas supply region of main combustion air channel successively Component, the outer air nozzle constitute the third level air delivery member being located in the gas supply region of auxiliary combustion air channel；It is described Interior gas gun and outer gas gun constitute successively positioned at main combustion air channel gas supply region in the first order and the second level Gas supply component；

It uniformly gathers regularly on the front end face of the gas gun pipette tips and is provided with several positive spray orifices, front end It uniformly gathers regularly on side and is provided with several lateral spray orifices；

When work, main combustion air channel is equal by the interior air nozzle of the radial misalignments setting and middle air nozzle The main function area for the combustion air that cloth sprays is a wide range of main combustion among burner hearth corresponding with main combustion air channel The main function area in area, the combustion air that the auxiliary combustion air channel is sprayed by outer air nozzle is positioned at burner hearth chamber Wall near zone；The interior gas gun and outer gas gun of the radial misalignments setting are sprayed by the forward direction on respective front end face Combustion gas is uniformly sprayed in hole towards burner hearth primary zone, further through the lateral peripherad air nozzle in spray orifice face on respective front end side Diverging injection combustion gas, it is immediately right that the combustion gas uniformly ejected with the diverging of multiple spot multi-panel is directly carried out with the uniformly distributed combustion air of surrounding Uniform dense burning is rushed, is sufficiently mixed and carry out, the mean temperature and peak temperature of flame is advantageously reduced, is reduced or avoided The generation of localized high temperature regions point in burner hearth, to effectively reduce the production quantity of NOx, meanwhile, led to by being located at auxiliary combustion air The third level combustion air that outer air nozzle in road sprays circulates along the cavity wall of outer aditus laryngis, makes primary zone among furnace chamber Clean-burning fraction combustion gas is not obtained when interior dense burning to carry out helping to carry in the region of combustion air abundance near the cavity wall The light burning of high combustion gas burn-out degree reaches exhaust gas discharge mark as defined in environmental protection administration conscientiously to realize the zero-emission of boiler CO It is accurate.

The low NOx high heating values gas burner of the utility model based on above-mentioned design, due to distinguishing combustion air channel It is arranged as main combustion air channel and assists combustion air channel, and with diameter on panel corresponding with main combustion air channel To correspondence, in pairs close to, pair between the form that misplaces be provided with and convenient for limit is fixed there is two level to be supplied respectively to combustion gas and combustion-supporting sky The mounting hole of the gas gun and combustion air nozzle of airway dysfunction is arranged on panel corresponding with auxiliary combustion air channel The mounting hole of third level combustion air nozzle, and on the front end face of gas gun pipette tips and front end side respectively regularly It uniformly gathers and is provided with several positive spray orifices and lateral spray orifice, make to respectively constitute the combustion-supporting of first order gas supply and second level gas supply Air nozzle and gas gun eject that uniformly distributed and spray regime is big, contributes to respectively in the case of radial Heterogeneous Permutation in pairs The combustion gas of mutual full and uniform mixing and combustion air, and be allowed in primary zone fully carry out dense burning, reduce average flame Temperature can effectively avoid or reduce the generation of localized high temperature regions point, to inhibit the production quantity of NOx, it is ensured that use this practicality The high heating value gas fired-boiler of novel high heating value gas burner can reach the requirement of NOx emission standard；It is convenient for simultaneously because being arranged The auxiliary combustion air channel for carrying out third level gas supply, can ensure that and do not obtain clean-burning fraction combustion gas in primary zone in stove Light burning is carried out in the environment for having sufficient combustion air near bore wall, to fully burn combustion gas, realizes high heating value gas fired-boiler CO zero-emission.So the low NOx high heating values gas burner of the utility model and existing common high heating value fuel gas buring Device is compared, hence it is evident that have structure is more scientific and reasonable, classification of supplying gas is finer, gas supply evenly, can ensure that and realize the main combustion of burner hearth High heating value combustion gas and combustion air carry out the low production quantities of NOx in the full and uniform mixing uniformly supplied gas and reliably in area Dense burning, and sufficient combustion air carries out the light burning generated without CO near furnace wall, to use this practicality The high heating value gas fired-boiler of novel burner has the zero-emission of lower NOx generation amount and CO, reaches environmental protection administration's rule conscientiously Fixed waste gas emission standard solves puzzlement high heating value gas fired-boiler recent years in NOx concentration discharge it is difficult to up to standard one Hang-up provides the foundation guarantee to expand such as natural gas class high heating value combustion gas in gas fired-boiler application aspect, thus has Very strong practicability and wide market application prospect.

Description of the drawings

Fig. 1 is the basic structure schematic diagram of the utility model embodiment；

Fig. 2 is the A-A sectional views of Fig. 1；

Fig. 3 is the structural schematic diagram of front panel in the utility model embodiment；

Fig. 4 is the pipette tips structural schematic diagram of gas gun in the utility model embodiment.

In figure：

11. axle center of aditus laryngis, 12. loop line A, 13. loop line B, 14. loop line C in 1.

15. 16. 2. outer aditus laryngis of loop line E of loop line D, 3. combustion air channel

31. main combustion air channel 32. assists 4. air nozzle of combustion air channel

43. outer air nozzle of air nozzle, 5. gas gun in air nozzle 42. in 41.

54. lateral spray orifice of the positive spray orifice of 52. outer gas gun of gas gun 53. in 51.

6. 61. mounting hole A of front panel, 62. mounting hole B, 63. mounting hole C

64. 65. mounting hole E of mounting hole D, 66. mounting hole F.

Specific implementation mode

The utility model is described in further detail with exemplary embodiments below in conjunction with the accompanying drawings.

In fig. 1, fig. 2 and fig. 3, the low NOx high heating values gas burner of the utility model, main body include interior aditus laryngis 1, Outer aditus laryngis 2, combustion air channel 3, air nozzle 4, gas gun 5 and front panel 6, it is characterised in that；The interior aditus laryngis 1, Outer aditus laryngis 2 and combustion air channel 3 setting in annular shape, within aditus laryngis 1 center line be axle center 11, from inside to outside sequentially coaxially Setting；The combustion air channel 3 is made of the ring cavity between interior aditus laryngis 1 and outer aditus laryngis 2, includes inner aditus laryngis 1 The auxiliary combustion air channel 32 of the 2 internal chamber wall side of main combustion air channel 31 and outer aditus laryngis of outer wall side；The sky Gas nozzle 4 includes interior air nozzle 41, middle air nozzle 42 and outer air nozzle 43；The gas gun 5 includes interior Gas gun 51 and outer gas gun 52；6 main body of front panel is in flat-disk shape, and interior aditus laryngis is provided on center 1 mounting hole A 61, be disposed on the loop line A 12 of diameter d1 in peripheral disk, it is isometrical be uniformly arranged it is several The mounting hole B 62 of interior gas gun 51, on the loop line B 13 of diameter d2, the isometrical several interior air sprays being uniformly arranged First 41 mounting hole C 63, on the loop line C 14 of diameter d3, the peace of the isometrical several outer gas guns 52 being uniformly arranged Hole D 64 is filled, on the loop line D 15 of diameter d4, the mounting hole E 65 of the isometrical several middle air nozzles 42 being uniformly arranged, On the loop line E 16 of diameter d5, the mounting hole F 66 of the isometrical several outer air nozzles 43 being uniformly arranged；Wherein：It is described The loop line A 12 of diameter d1, the loop line B 13 of diameter d2, the loop line C 14 of diameter d3 and the loop line D of diameter d4 15 centered on axle center 11, and diameter is sequentially coaxially divided to be arranged before corresponding with main 31 region of combustion air channel in ring cavity on demand On panel 6；The loop line E16 of the diameter d5 is arranged opposite with auxiliary combustion air 32 regions of channel described in ring cavity On the front panel 6 answered；The setting quantity of the mounting hole B 62 of the interior gas gun 51 and the mounting hole C of interior air nozzle 41 63 setting quantity correspondence is consistent；The setting quantity of the mounting hole D 64 of the outer gas gun 52 and interior air nozzle 41 The setting quantity correspondence of mounting hole E 65 is consistent；The peace of the mounting hole B 62 and outer gas gun 52 of the interior gas gun 51 Fill the mutual radial misalignments in installation position of hole D 64；The installation position of the mounting hole C 63 of the interior air nozzle 41 and internal combustion The installation position of the mounting hole B 62 of gas spray gun 51 mutually radially it is corresponding, in pairs close to；The installation of the interior air nozzle 41 The installation position of hole E 65 and the installation position of the mounting hole D 64 of outer gas gun 52 mutually radially it is corresponding, in pairs close to；Institute The interior air nozzle 41 and middle air nozzle 42 stated constitute the first order in the gas supply region of main combustion air channel 31 successively With second level air delivery member, the outer air nozzle 43 constitutes the third being located in 32 gas supply region of auxiliary combustion air channel Grade air delivery member；The interior gas gun 51 and outer gas gun 52 is constituted successively supplies area positioned at main combustion air channel 31 The first order in domain and second level gas supply component.

In Fig. 4, it uniformly gathers regularly on the front end face of 5 pipette tips of gas gun and is provided with several forward directions Spray orifice 53 uniformly gathers on the side of front end and is provided with several lateral spray orifices 54 regularly.

When work, interior air nozzle 41 and hollow gas blowout of the main combustion air channel 31 by the radial misalignments setting The main function area of first 42 combustion airs uniformly sprayed is broad in the middle positioned at burner hearth corresponding with main combustion air channel 31 Range primary zone, the main function area for the combustion air that the auxiliary combustion air channel 32 is sprayed by outer air nozzle 43 To be located at burner hearth cavity wall near zone；The interior gas gun 51 and outer gas gun 52 of the radial misalignments setting are by respective Positive spray orifice 53 on front end face uniformly sprays combustion gas towards burner hearth primary zone, further through the lateral spray orifice on respective front end side The peripherad air nozzle diverging injection combustion gas in 54 faces, the combustion gas uniformly ejected with the diverging of multiple spot multi-panel are directly uniformly distributed with surrounding Combustion air liquidated, be sufficiently mixed and carried out uniform dense burning immediately, advantageously reduce flame mean temperature and The generation of localized high temperature regions point in burner hearth is reduced or avoided in peak temperature, same with this to effectively reduce the production quantity of NOx When, the third level combustion air sprayed by the outer air nozzle 43 in auxiliary combustion air channel 32 is along outer aditus laryngis 2 cavity wall circulation makes not obtain clean-burning fraction combustion gas when dense burning in primary zone among furnace chamber combustion-supporting near cavity wall Help to improve the light burning of combustion gas burn-out degree in the region of air abundance, to realize the zero-emission of boiler CO, conscientiously Reach waste gas emission standard as defined in environmental protection administration.

Claims (1)

1. a kind of low NOx high heating values gas burner, main body include interior aditus laryngis（1）, outer aditus laryngis（2）, combustion air channel （3）, air nozzle（4）, gas gun（5）And front panel（6）, it is characterised in that；The interior aditus laryngis（1）, outer aditus laryngis（2）With Combustion air channel（3）Setting in annular shape, within aditus laryngis（1）Center line be axle center（11）, sequentially coaxially set from inside to outside It sets；The combustion air channel（3）By being located at interior aditus laryngis（1）With outer aditus laryngis（2）Between ring cavity constitute, include inner larynx Mouthful（1）The main combustion air channel of outer wall side（31）With outer aditus laryngis（2）The auxiliary combustion air channel of internal chamber wall side （32）；The air nozzle（4）It include interior air nozzle（41）, middle air nozzle（42）With outer air nozzle（43）；Institute The gas gun stated（5）It include interior gas gun（51）With outer gas gun（52）；The front panel（6）Main body is in flat It is discoid, interior aditus laryngis is provided on center（1）Mounting hole A（61）, it is disposed with positioned at diameter d1 in peripheral disk Loop line A（12）Upper, the isometrical several interior gas guns being uniformly arranged（51）Mounting hole B（62）, it is located at the circle of diameter d2 Loop wire B（13）Upper, the isometrical several interior air nozzles being uniformly arranged（41）Mounting hole C（63）, it is located at the loop line C of diameter d3 （14）Upper, the isometrical several outer gas guns being uniformly arranged（52）Mounting hole D（64）, it is located at the loop line D of diameter d4（15） Upper, the isometrical several middle air nozzles being uniformly arranged（42）Mounting hole E（65）, it is located at the loop line E of diameter d5（16）Upper, etc. Several outer air nozzles that diameter is uniformly arranged（43）Mounting hole F（66）；Wherein：

The loop line A of the diameter d1（12）, diameter d2 loop line B（13）, diameter d3 loop line C（14）With diameter d4 Loop line D（15）With axle center（11）Centered on, sequentially coaxially divide on demand diameter setting with main combustion air channel in ring cavity （31）The corresponding front panel in region（6）On；

The loop line E of the diameter d5（16）Be arranged with auxiliary combustion air channel described in ring cavity（32）Region is opposite The front panel answered（6）On；

The interior gas gun（51）Mounting hole B（62）Setting quantity and interior air nozzle（41）Mounting hole C（63） Setting quantity correspondence be consistent；

The outer gas gun（52）Mounting hole D（64）Setting quantity and interior air nozzle（41）Mounting hole E（65） Setting quantity correspondence be consistent；

The interior gas gun（51）Mounting hole B（62）With outer gas gun（52）Mounting hole D（64）Installation position Mutual radial misalignments；

The interior air nozzle（41）Mounting hole C（63）Installation position and interior gas gun（51）Mounting hole B（62） Installation position mutually radially it is corresponding, in pairs close to；

The interior air nozzle（41）Mounting hole E（65）Installation position and outer gas gun（52）Mounting hole D（64） Installation position mutually radially it is corresponding, in pairs close to；

The interior air nozzle（41）With middle air nozzle（42）It constitutes successively and is located at main combustion air channel（31）Supply area The first order in domain and second level air delivery member, the outer air nozzle（43）It constitutes and is located at auxiliary combustion air channel（32） Supply the third level air delivery member in region；

The interior gas gun（51）With outer gas gun（52）It constitutes successively and is located at main combustion air channel（31）Supply area The first order in domain and second level gas supply component；

The gas gun（5）It uniformly gathers regularly on the front end face of pipette tips and is provided with several positive spray orifices（53）, preceding It uniformly gathers regularly in end side surface and is provided with several lateral spray orifices（54）.