CN206459189U - The hierarchical segmented configuration burner of combustion gas - Google Patents

The hierarchical segmented configuration burner of combustion gas Download PDF

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Publication number
CN206459189U
CN206459189U CN201720096271.0U CN201720096271U CN206459189U CN 206459189 U CN206459189 U CN 206459189U CN 201720096271 U CN201720096271 U CN 201720096271U CN 206459189 U CN206459189 U CN 206459189U
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China
Prior art keywords
burner
combustion gas
gas gun
gas
combustion
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CN201720096271.0U
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陈宝明
徐正
徐志斌
韦能全
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SHANGHAI WISEBOND TECHNOLOGY Co Ltd
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SHANGHAI WISEBOND TECHNOLOGY Co Ltd
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Abstract

The utility model is related to a kind of hierarchical segmented configuration burner of combustion gas, and the technical problem to be solved is to be matched with various boiler furnaces, reaches NOxMinimum discharge purpose.Belong to Industrial Boiler drop drainage technique field.It is characterized in that:The outer gas gun fixed plate vertical with axis is equipped between aditus laryngis peripheral end portion and endocyclic tube end, external combustion gas gun header runs through and the exposed outer gas gun fixed plate;It is combustion air passage between endocyclic tube and outer shroud cylinder;Outer shroud drum outer wall is fitted with the refractory masses inwall to be connected.Good effect is:There is provided a kind of new combustion gas and air classification segmented configuration method, external combustion air-gun arrangement is on the outside of aditus laryngis, so as to make use of boiler furnace space to greatest extent, reduces flame mean temperature and peak temperature;Outer layer combustion air passage is set, the overall bias combustion of burner region is formed, NOx generation is further reduced, so as to be less than 30mg/Nm3Ultra-low NOx emission, and without CO produce.

Description

The hierarchical segmented configuration burner of combustion gas
Technical field
The utility model is related to a kind of hierarchical segmented configuration burner of combustion gas, more particularly to a kind of high heating value fuel gas buring The combustion gas of device and air classification segmented configuration method, the flame of generation can be matched with various boiler furnaces, reach NOxUltralow row Purpose is put, belongs to Industrial Boiler drop drainage technique field.
Background technology
Beijing is the serious environmental pollution of improvement and haze weather, will implement most stringent of atmosphere pollution row in 2017 Standard is put, newly-built gas fired-boiler NOx emission reduction must arrive 30mg/Nm3Below.Using traditional burner structure, only with low The method of nitrogen burning, it is difficult to reach 30mg/Nm3Minimum discharge.To reduce gas fired-boiler denitration cost, Beijing is the most strict The implementation of discharge standard, will bring the technological innovation of burner.
Now, natural gas low emission combustor is used nothing more than two kinds of technology paths:One is premixed metal surface burning The outlet of device, i.e. burner throat is connected with several millimeters grades of aperture is whether there is on cylindrical metal cylinder, this tin, and natural gas with Air is mixed in the cylinder, and gaseous mixture burns outside the cylinder, due to combustion gas and air pre-mixing, easily occurs tempering even detonation, Security is not good;Currently on the market with diffusion type low NO(Non- premix)Plus the technology of flue gas recirculation is in the majority, but by It is not sufficiently effective in the low nitrogen of burner body, therefore there are problems that required exhaust gas volumn is larger could effectively reduce, and And when exhaust gas volumn is larger, buner system easily shakes.
Because the boiler door of in the market is complicated, combustion chamber is also not of uniform size, and particularly small tonnage boiler majority is fire tube Boiler, combustion chamber is especially small, the difficulty of settling-discharging is added, for 30mg/Nm3Following emission request is, it is necessary to break through in the past The technologies such as combustion gas classification, i.e., need to seek new combustion gas and air classification collocation method, couple various low-NO_x combustion technologies, as far as possible Flame mean temperature and peak temperature are reduced, to reduce NOx generation, realizes and is less than 30mg/Nm3It is ultralow nitrogen discharged.
The content of the invention
The purpose of this utility model is:There is provided a kind of combustion gas hierarchical segmented configuration burner, combustion gas and air classification point Section configuration, couples dense-dilute burner combustion technology, Industrial Boiler Flame is full of furnace cavity as far as possible, and reduction flame is averaged Temperature and peak temperature, another aspect fuel carry out bias combustion, in the presence of the two, effectively reduction NOx initial ejection Concentration.
The technical solution of the utility model is:A kind of hierarchical segmented configuration burner of combustion gas, including it is placed in the burning Burner, aditus laryngis and the refractory masses of burner periphery of the axis line position of device, it is characterised in that:The combustion Burner, aditus laryngis, outer gas gun, endocyclic tube, outer shroud cylinder and refractory masses, are sequentially coaxially symmetrical arranged inside-out:The larynx The outer gas gun fixed plate vertical with axis is equipped between mouth peripheral end portion and endocyclic tube end, the external combustion gas gun header is passed through Wear and the exposed outer gas gun fixed plate;It is combustion air passage between the endocyclic tube and outer shroud cylinder;The outer shroud Drum outer wall is fitted with the refractory masses inwall to be connected.
Further, the external combustion gas gun header quantity is multiple, and mutually packet is set in the same direction, and the packet setting refers to Multiple external combustion gas gun headers are divided into 1~6 group, and each group of quantity is 2~100, and each group is using the axle center of device as the center of circle, along phase Circular arc line with radius is uniformly arranged at intervals, and different component is not arranged at intervals uniformly around the circular arc line of different radii.
The combustion gas of the above-mentioned hierarchical segmented configuration burner of combustion gas and air classification segmented configuration method, it is characterised in that:
1st, outer gas gun is set, and 10%~90% gas quantity sprays from the peripheral outer gas gun spout for being arranged on diffusion type aditus laryngis Go out, reduce the gas quantity of burner region, increase the distributed areas of gaseous fuel, greatly increase flame being full of in burner hearth Degree, reduces flame mean temperature and peak temperature, reduces thermal NO x production, effectively reduces NOx concentration of emission.
2nd, burner region takes the form of overall bias combustion, and the arrangement of fuel is increased in burner region, and reduction is helped The setting of wind is fired, dense burning is formed, causes the purpose of ischaemia, it is not sufficiently combusted to generate the materials such as CO or HCN, CO Deng material formation reducing atmosphere, the NOx of generation is reduced at high temperature, reduces NOx concentration of emission;In burner outer edge area It is interior, enough air are passed to, phase oxygen-rich area burns away guarantee burning fully to the CO of not sufficiently combusted generation after combustion, makes CO discharge is zero.
Good effect of the present utility model is:There is provided a kind of hierarchical segmented configuration burner of new combustion gas and its combustion Gas and air classification segmented configuration method, 10%~90% combustion gas spray from outer air gun, external combustion air-gun arrangement on the outside of aditus laryngis, So as to make use of boiler furnace space to greatest extent, flame mean temperature and peak temperature are reduced so that each portion in burner hearth The thermic load divided is uniform, so as to reduce NOx generation;Outer layer combustion air passage is set, burner region is formed integrally deep or light Burning, further reduces NOx generation, so as to be less than 30mg/Nm3Ultra-low NOx emission, and without CO produce.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of one group of outer gas gun embodiment;
Fig. 2 is Fig. 1 A to structural representation;
Fig. 3 is the structural representation of two groups of outer gas gun embodiments;
Fig. 4 is Fig. 3 A to structural representation.
In figure:1. burner;2. aditus laryngis;3. endocyclic tube;4. outer layer combustion air passage;5. outer shroud cylinder;6. outer gas gun; 7. outer gas gun fixed plate;8. refractory masses.
Embodiment
Fig. 1~Fig. 4 is a kind of hierarchical segmented configuration burner structural representation of combustion gas, and Fig. 1 is that one group of outer gas gun is real Apply the structural representation of example(One group, the outer gas gun of the six roots of sensation), Fig. 3 is the structural representation of two groups of outer gas gun embodiments(Two groups, Internal layer arranges 6 outer gas guns, and outer layer arranges 10 outer gas guns);From diagram, a kind of hierarchical segmented configuration burning of combustion gas Device, including it is placed in the fire resisting of burner 1, aditus laryngis 2 and the burner periphery of the axis line position of the burner Material layer 8, it is characterised in that:The burner 1, aditus laryngis 2, outer gas gun 6, endocyclic tube 3, outer shroud cylinder 5 and refractory masses 8, Sequentially coaxially it is symmetrical arranged inside-out:It is equipped between the peripheral end portion of aditus laryngis 2 and the end of endocyclic tube 3 vertical with axis Outer gas gun fixed plate 7, the outer pipette tips of gas gun 6 run through and the exposed outer gas gun fixed plate 7;The endocyclic tube 3 with It is combustion air passage 4 between the outer shroud cylinder 5;5 outer walls of the outer shroud cylinder are fitted with the inwall of refractory masses 8 to be connected.
Further, the pipette tips quantity of outer gas gun 6 is multiple, and mutually packet is set in the same direction, and the packet setting is Refer to multiple pipette tips of outer gas gun 6 and be divided into 1~6 group, each group of quantityFor 2~100Root, each group by the center of circle of the axle center of device, Uniformly it is arranged at intervals along the circular arc line of same radius, circular arc line of the multiple outer pipette tips of gas gun 6 of difference group rotating around different radii Uniform to be arranged at intervals, outer gas gun 6 is fixed by outer gas gun fixed plate 7.Outer layer combustion air passage 4 is arranged on outer gas gun At 6 outer ledge, it is made up of air duct endocyclic tube 3 and air duct outer shroud cylinder 5, passes to outer layer combustion air.Air leads to It is refractory masses 8 outside road outer shroud cylinder 5.
Outer gas gun fixed plate 7 is refractory material, inner edges connection aditus laryngis 2, outward flange connection air duct outer shroud cylinder 5.Outer gas gun positioning hole is equipped with outer gas gun fixed plate 7, outer gas gun 6 passes the outer combustion gas in outer gas gun fixed plate 7 Rifle positioning hole is equipped with several gas jet orifices to burner hearth on the end face of outer gas gun 6, and combustion gas is sprayed into and burnt in burner hearth, Expand the coverage of fuel with this, reduce the central temperature of combustion zone, reduce NOx generation.
During work, the combustion gas in burner 1 is first ignited burning, because gas quantity is relatively more, carries out dense burning, fuel CO, H with strong reducing property can be divided2, the material such as HCN, suppress and reduce NOx generation;The high temperature mixing that burning is produced Flue gas diffuses to the periphery of burner 1, the combustion gas that the outer gas gun 6 that ignites is ejected;Because outer gas gun 6 is not disposed on burner Inside 1, i.e., combustion gas that outer gas gun 6 is ejected and the air mixing at initial stage diffused out from aditus laryngis 2 be not good, but exists in the later stage Can uniformly it be mixed in the presence of outer air, so as to expand flame region.
Outer layer combustion gas carries out light burning, and fuel burns completely, and CO discharge is zero.And the arrangement of outer combustion gas, enable combustion gas Burnt in whole burner hearth in space as big as possible, reduce flame mean temperature and peak temperature, reduce NOx's Discharge.
The utility model sets outer gas gun on the outside of aditus laryngis, so as to make use of boiler furnace space to greatest extent, reduces Flame mean temperature and peak temperature so that the thermic load of various pieces is uniform in burner hearth, so as to reduce NOx generation;If Outer layer combustion air passage is put, the overall bias combustion of burner region is formed, NOx generation is further reduced, so as to reach small In 30mg/Nm3Ultra-low NOx emission, and without CO produce.

Claims (3)

1. a kind of hierarchical segmented configuration burner of combustion gas, including be placed in the axis line position of the burner burner, Aditus laryngis and the refractory masses of burner periphery, it is characterised in that:The burner, aditus laryngis, outer gas gun, inner ring Cylinder, outer shroud cylinder and refractory masses, are sequentially coaxially symmetrical arranged inside-out:The aditus laryngis peripheral end portion and endocyclic tube end it Between be equipped with the outer gas gun fixed plate vertical with axis, the external combustion gas gun header runs through and the exposed outer gas gun is fixed Plate;It is combustion air passage between the endocyclic tube and outer shroud cylinder;In the outer shroud drum outer wall and the refractory masses Wall laminating is connected.
2. the hierarchical segmented configuration burner of a kind of combustion gas according to claim 1, it is characterised in that:The outer gas gun rifle Head quantity is multiple, and mutually packet is set in the same direction.
3. the hierarchical segmented configuration burner of a kind of combustion gas according to claim 2, it is characterised in that:It is described packet setting be Refer to multiple external combustion gas gun headers and be divided into 1~6 group, each group of quantity is 2~100, and each group is by the center of circle of the axle center of device, edge The circular arc line of same radius is uniformly arranged at intervals, and difference group external combustion gas gun header is uniformly spaced rotating around the circular arc line of different radii Set.
CN201720096271.0U 2017-01-25 2017-01-25 The hierarchical segmented configuration burner of combustion gas Active CN206459189U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106678793A (en) * 2017-01-25 2017-05-17 上海华之邦科技股份有限公司 Fuel gas graded and segmented distribution combustion device and fuel gas graded and segmented distribution method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106678793A (en) * 2017-01-25 2017-05-17 上海华之邦科技股份有限公司 Fuel gas graded and segmented distribution combustion device and fuel gas graded and segmented distribution method thereof
CN106678793B (en) * 2017-01-25 2019-04-30 上海华之邦科技股份有限公司 The hierarchical segmented configuration burner of combustion gas and its hierarchical segmented configuration method of combustion gas

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