CN106287778A - A kind of combustion type heater device for flue gas desulfurization and denitrification system - Google Patents
A kind of combustion type heater device for flue gas desulfurization and denitrification system Download PDFInfo
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- CN106287778A CN106287778A CN201510257824.1A CN201510257824A CN106287778A CN 106287778 A CN106287778 A CN 106287778A CN 201510257824 A CN201510257824 A CN 201510257824A CN 106287778 A CN106287778 A CN 106287778A
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- flue gas
- combustion
- denitrification system
- flue
- gas desulfurization
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Abstract
The present invention relates to a kind of novel combustion type heater device for flue gas desulfurization and denitrification system.This combustion type heater device utilizes fuel combustion to heat the flue gas of low temperature, it is achieved that improve flue-gas temperature to the purpose of the suitableeest catalytic temperature of denitrating catalyst in SCR (SCR) denitrification apparatus.This device by under the mating reaction of the burner that installs additional on flue and mixing machine by the flue gas short distance within flue, bring up to target temperature quickly, uniformly, it is ensured that the Effec-tive Function of SCR denitration device and service life.Additionally burner and the mixing machine of this device is installed simple, it is easy to change.
Description
Technical field
The present invention relates to atmosphere pollution control field, relate to a kind of for flue gas desulfurization and denitrification system
The combustion type heater device of system
Background technology
Nitrogen oxides is that China is presently required one of major pollutants reducing discharge capacity, according to statistics
If not taking effective control measure, being emitted on of the nitrogen oxides that China's energy-consuming causes
The year two thousand twenty and the year two thousand thirty will respectively reach 31,540,000 tons and 42,960,000 tons.SCR
(SCR) technology due to its secondary pollution few, the reason that purification efficiency is high is widely adopted.
Current SCR technological process major part uses high gray area arrangement.This layout side
During catalyst is in high ash flue dust in formula, easily cause blocking and poisoning；The mode of desulfurization postposition is led
Cause sulfur dioxide and ammonia generates ammonium hydrogen sulfate, easily cause the corruption of catalyst poisoning and heat exchanger
Erosion；The catalyst channels of which is relatively big simultaneously, and specific surface area is little, and catalyst amount is big and lives
Property is low.Preposition to desulfurization and dedusting can be good at is solved the problems referred to above by the mode that end is arranged.
End arrangement needs install heater carry out the flue gas of desulfurization and dedusting heating ability
Entrance SCR denitration device, but the domestic report that there is no this device.
Additionally it is different from the flue gas in the field such as boiler and thermoelectricity, some industrial furnaces (such as coke oven)
The flue-gas temperature relatively low (generally below 300 DEG C) of discharge.Current catalyst can not solve simultaneously
The certainly high denitration activity under low temperature and the problem of catalyst poisoning.And flue gas is entered by appropriateness
The temperature that row heating enables its temperature to reach current catalyst Effec-tive Function can be good at solving
The certainly problem of the denitration of industrial furnace.
In view of this, it would be highly desirable to provide a kind of flue gas heater for flue gas desulfurization and denitrification system to fill
Put, thus promote end arrangement technology and the development of low-temperature denitration of flue gas technique.
Summary of the invention
(1) to solve the technical problem that
The technical problem to be solved in the present invention is how to provide for flue gas desulfurization and denitrification system
Flue gas heater device.
(2) technical scheme
In order to solve above-mentioned technical problem, the invention provides a kind of for flue gas desulfurization and denitrification system
The combustion type heater device of system, including multiple burners being symmetrically installed on flue；Described
Burner includes fuel channel, combustion air passage, axial rotational flow blade and burner noz(zle), helps
Combustion air duct inwall is connected with fuel channel outer wall by axial rotational flow blade；
Equipped with multiple mixing machines being symmetrically installed on the flue in described burner downstream；Described blending
Device is internally provided with swirl vane；
The downstream of described mixing machine is equipped with ammonia-gas spraying device；Described ammonia-gas spraying device is by ammonia and heating
After flue gas mix homogeneously after enter SCR denitration device.
Preferably, described burner is arranged at flue inner homogeneous, and number is 2-10.
Preferably, in described burner, the anglec of rotation of axial rotational flow blade is 0-60 degree, institute
In stating burner, axial rotational flow blade is uniformly distributed at fuel channel outer wall vertically, and number is
3-12.
Preferably, described burner preferred liquid or gaseous fuel, described burner need to be by Jiao
The temperature of kiln gas homogeneous heating in flue, it is 300 DEG C～450 DEG C that flue gas heats up.
Preferably, the burner noz(zle) of described burner uses the rotation of jet swirl flow combustion nozzle, lobe
Stream burner noz(zle), combinatory variants between sawtooth swirl flow combustion nozzle or three.
Preferably, described mixing machine is evenly arranged along flue outer wall circumference, and number is 2-10
Individual, the anglec of rotation of described mixing machine inward eddy blade is 0-60 degree, and the number of blade is 3-12
Individual, the blending gas in described mixing machine is air or flue gas.
(3) beneficial effect
Technical scheme have the advantage that the present invention for flue gas desulfurization and denitrification system
The combustion type heater device of system, achieves under the mating reaction by burner and mixing machine
Flue short-distance and medium-distance, quickly, uniformly add the heat smoke purpose to target temperature.In the burner
Fuel and respectively enter burner noz(zle) by the combustion air of swirl vane and ensure that burning
Stability, and effectively reduce the flame temperature of combustion zone；Employing jet swirl flow combustion nozzle,
Lobe swirl flow combustion nozzle, combinatory variants between sawtooth swirl flow combustion nozzle or three are made
The mixed effect of jet expansion fuel and combustion air it is able to ensure that, it is ensured that flue gas for burner noz(zle)
The uniform lift of temperature；Arranging mixing machine in burner downstream can be according to reality such as flue gas yield
Operating mode carries out secondary adjustment to combustion efficiency, the Temperature Distribution of flue gas is adjusted uniformly, it is to avoid go out
Existing focus.Above-mentioned burner and mixing machine cooperate can high degree guarantee flue gas
It is uniformly heated to target temperature, thus realizes the Effec-tive Function of follow-up SCR device, simultaneously
It can be avoided that the situation that local temperature is high occurs, it is to avoid the inactivation of catalyst under high temperature.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, under
The accompanying drawing used required in embodiment or description of the prior art will be briefly described by face,
It should be evident that the accompanying drawing in describing below is only some embodiments of the present invention, for
From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is that the present invention illustrates for the combustion type heater device of flue gas desulfurization and denitrification system
Figure；
Fig. 2 is jet swirl nozzle device schematic diagram；
Fig. 3 is lobe swirl nozzle device schematic diagram；
Fig. 4 is sawtooth swirl nozzle device schematic diagram.
In figure: 1, mixing machine；2, combustion air passage；3, fuel channel；4, burning spray
Mouth；5, flue；6, swirl vane；7, jet swirl flow combustion nozzle；8, lobe eddy flow combustion
Burn nozzle；9, sawtooth swirl flow combustion nozzle.
Detailed description of the invention
Make to retouch the most in detail to embodiments of the present invention with embodiment below in conjunction with the accompanying drawings
State.Following example are used for illustrating the present invention, but can not be used for limiting the scope of the present invention.
In describing the invention, it should be noted that term " interior ", " outward ", " axially "
It is based on orientation shown in the drawings or position relationship in the orientation indicated or position relationship, is only
For the ease of describe the present invention and simplify describe rather than instruction or hint indication device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore can not manage
Solve as limitation of the present invention
Embodiment one
Referring to Fig. 1 and Fig. 2, the present embodiment one provides a kind of for flue gas desulfurization and denitrification system
Combustion type heater device includes mixing machine 1, combustion air passage 2, fuel channel 3, burning
Nozzle 4 and flue 5.Wherein burner noz(zle) 4 includes swirl vane 6 and jet swirl flow combustion nozzle 7.
Combustion air passage 2, fuel channel 3 and burner noz(zle) 4 collectively form burner.Each parts
Size and model are according to processing the requirements such as the composition of flue gas, temperature, target temperature, fuel type
Select.
In the present embodiment after the combustion air effect by combustion air passage 2 and swirl vane 6
Enter jet swirl flow combustion nozzle 7 to carry out mixing after-combustion with the fuel through fuel channel 3.Combustion
High-temperature gas after burning sprays into through jet swirl flow combustion nozzle 7 and inside flue supplies flue gas
Heat.
In the present embodiment, heated flue gas is through mixing machine 1, in mixing machine 1 ejection flue gas or
Person's air carries out secondary action to the flue gas of heating, it is therefore an objective to flue-gas temperature distribution adjusted all
Even, it is to avoid the high temperature hotspot of local occurs.
The ammonia sprayed with ammonia-gas spraying device through the flue gas of mixing machine 1 in the present embodiment mixes laggard
Enter SCR denitration device to react.
The present embodiment use combustion type heater can rapidly and uniformly by flue gas to mesh
Mark temperature does not produce the high temperature hotspot of local simultaneously, for the efficient fortune of the SCR denitration device in downstream
Row is laid a good foundation.The combustion type heater device that the present embodiment uses can promote SCR denitration
In technique end arrange mode and the popularization of low-temperature denitration of flue gas technique.
Embodiment two
Referring to Fig. 1 and Fig. 3, the present embodiment one provides a kind of for flue gas desulfurization and denitrification system
Combustion type heater device.Burner noz(zle) 4 includes swirl vane 6 and lobe swirl flow combustion nozzle 8.
The present embodiment two other structure and principle, all identical with embodiment one, here is omitted.
Embodiment three
Referring to Fig. 1 and Fig. 4, the present embodiment one provides a kind of for flue gas desulfurization and denitrification system
Combustion type heater device.Burner noz(zle) 4 includes swirl vane 6 and sawtooth swirl flow combustion nozzle 9.
The present embodiment three other structure and principle, all identical with embodiment one, here is omitted.
Embodiment of above is merely to illustrate the present invention, rather than limitation of the present invention.Although
Being described in detail the present invention with reference to embodiment, those of ordinary skill in the art should
Understand, technical scheme is carried out various combination, amendment or equivalent, all
Without departing from the spirit and scope of technical solution of the present invention, the right in the present invention all should be contained and want
Ask in the middle of scope.
Claims (10)
1., for a combustion type heater device for flue gas desulfurization and denitrification system, its feature exists
In, including multiple burners being symmetrically installed on flue；Described burner include fuel channel,
Combustion air passage, axial rotational flow blade and burner noz(zle), combustion air vias inner walls passes through axle
It is connected with fuel channel outer wall to swirl vane；
Equipped with multiple mixing machines being symmetrically installed on the flue in described burner downstream；Described blending
Device is internally provided with swirl vane；
The downstream of described mixing machine is equipped with ammonia-gas spraying device；Described ammonia-gas spraying device is by ammonia and heating
After flue gas mix homogeneously.
A kind of combustion-type for flue gas desulfurization and denitrification system the most according to claim 1
Heater assembly, it is characterised in that described burner is evenly arranged along flue outer wall circumference,
Number is 2-10.
A kind of combustion-type for flue gas desulfurization and denitrification system the most according to claim 1
Heater assembly, it is characterised in that described mixing machine is evenly arranged along flue outer wall circumference,
Number is 2-10.
A kind of combustion-type for flue gas desulfurization and denitrification system the most according to claim 1
Heater assembly, it is characterised in that in described burner, the anglec of rotation of axial rotational flow blade is
0-60 degree.
A kind of combustion-type for flue gas desulfurization and denitrification system the most according to claim 1
Heater assembly, it is characterised in that in described burner, axial rotational flow blade is vertically at fuel
Channel outer wall is uniformly distributed, and number is 3-12.
A kind of combustion-type for flue gas desulfurization and denitrification system the most according to claim 1
Heater assembly, it is characterised in that described burner be applicable to liquid fuel, gaseous fuel or
The fuel combination of the two.
A kind of combustion-type for flue gas desulfurization and denitrification system the most according to claim 1 adds
Hot device device, it is characterised in that it is 300 DEG C～450 DEG C that described burner improve flue gas to heat up.
A kind of combustion-type for flue gas desulfurization and denitrification system the most according to claim 1 adds
Hot device device, it is characterised in that the burner noz(zle) of described burner uses the spray of jet swirl flow combustion
Mouth, lobe swirl flow combustion nozzle, combinatory variants between sawtooth swirl flow combustion nozzle or three.
A kind of combustion-type for flue gas desulfurization and denitrification system the most according to claim 1 adds
Hot device device, it is characterised in that the anglec of rotation of described mixing machine inward eddy blade is 0-60 degree,
The number of blade is 3-12.
A kind of combustion-type for flue gas desulfurization and denitrification system the most according to claim 1
Heater assembly, it is characterised in that the blending gas in described mixing machine be air, flue gas or
The gaseous mixture of the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510257824.1A CN106287778A (en) | 2015-05-20 | 2015-05-20 | A kind of combustion type heater device for flue gas desulfurization and denitrification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510257824.1A CN106287778A (en) | 2015-05-20 | 2015-05-20 | A kind of combustion type heater device for flue gas desulfurization and denitrification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106287778A true CN106287778A (en) | 2017-01-04 |
Family
ID=57633866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510257824.1A Pending CN106287778A (en) | 2015-05-20 | 2015-05-20 | A kind of combustion type heater device for flue gas desulfurization and denitrification system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398176A (en) * | 2017-09-14 | 2017-11-28 | 上海宝钢节能环保技术有限公司 | Urea pyrolysis and spraying system for low-temperature smoke air SCR denitration |
| CN109357400A (en) * | 2018-09-30 | 2019-02-19 | 武汉奥杰科技股份有限公司 | A kind of spray combustion anthracite vertical hot furnace |
| CN109654728A (en) * | 2018-09-30 | 2019-04-19 | 武汉奥杰科技股份有限公司 | A kind of spray burning smoke coal vertical hot furnace |
| CN109883211A (en) * | 2019-03-29 | 2019-06-14 | 中冶华天工程技术有限公司 | Sintering flue gas heating device |
| WO2020113662A1 (en) | 2018-12-06 | 2020-06-11 | 中国科学院过程工程研究所 | Device and method for purifying co and nox in sintered flue gas |
-
2015
- 2015-05-20 CN CN201510257824.1A patent/CN106287778A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398176A (en) * | 2017-09-14 | 2017-11-28 | 上海宝钢节能环保技术有限公司 | Urea pyrolysis and spraying system for low-temperature smoke air SCR denitration |
| CN109357400A (en) * | 2018-09-30 | 2019-02-19 | 武汉奥杰科技股份有限公司 | A kind of spray combustion anthracite vertical hot furnace |
| CN109654728A (en) * | 2018-09-30 | 2019-04-19 | 武汉奥杰科技股份有限公司 | A kind of spray burning smoke coal vertical hot furnace |
| WO2020113662A1 (en) | 2018-12-06 | 2020-06-11 | 中国科学院过程工程研究所 | Device and method for purifying co and nox in sintered flue gas |
| CN109883211A (en) * | 2019-03-29 | 2019-06-14 | 中冶华天工程技术有限公司 | Sintering flue gas heating device |
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Addressee: Ji Leiming Document name: Notification that Application Deemed to be Withdrawn |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170104 |
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