CN209706102U - A kind of flue gas processing device and boiler system - Google Patents
A kind of flue gas processing device and boiler system Download PDFInfo
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- CN209706102U CN209706102U CN201920368585.0U CN201920368585U CN209706102U CN 209706102 U CN209706102 U CN 209706102U CN 201920368585 U CN201920368585 U CN 201920368585U CN 209706102 U CN209706102 U CN 209706102U
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- flue gas
- exhaust gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model relates to technical field of environment protection equipment, a kind of flue gas processing device and boiler system are disclosed.The flue gas processing device includes thermostat unit, and the thermostat unit includes the first exhaust gases passes and the second exhaust gases passes for adjusting component and connection, and the component that adjusts is used to adjust the flow by the flue gas not exchanged heat in first exhaust gases passes；Dust removing units, flow through the first exhaust gases passes the flue gas not exchanged heat mixed with the flue gas after the heat exchange for flowing through the second exhaust gases passes after by third exhaust gases passes enter dust removing units；Denitration unit, denitration unit are connected to dust removing units, and the flue gas after dust removal process is able to enter in denitration unit.The flue gas processing device is mixed the flue gas after heat exchange with the flue gas not exchanged heat by setting thermostat unit, to control the flue-gas temperature for entering dust removing units, it is ensured that dedusting and denitration process can be smoothly effectively performed in the flue gas of discharge.
Description
Technical field
The utility model relates to technical field of environment protection equipment more particularly to a kind of flue gas processing device and boiler systems.
Background technique
Waste heat boiler refers to the exhaust gas, waste material or waste heat and its combustible in waste liquid utilized in various industrial process
The heat generated after burning is heated to water in the boiler of certain working medium.
Waste heat boiler need to be dusted the flue gas that it is discharged when in use and denitration process after can just be discharged into atmosphere
In, it is existing that electrostatic precipitator and height are generally set gradually at flue outlet to the dedusting of flue gas and denitration process mode
Warm denitrification apparatus, but the effect of electrostatic precipitator and stability are poor, and when building to entire flue gas emission and
The transformation movement of boiler system is larger, and cost of investment is higher.Therefore, many enterprises can use bag filter and cryogenic selective
Catalytic reduction technique (Selective Catalytic Reduction, SCR) denitrating system is dusted flue gas and denitration
Processing, but the highest of bag filter can bearing temperature generally requires by flue-gas temperature control at 270 DEG C hereinafter, and low temperature
The inlet temperature of the catalyst requirement flue gas of SCR denitration system is controlled at 240 DEG C or more.This requires should control into cloth
The flue-gas temperature of bag dust collector cannot be too high, and controlling the smoke temperature drop after bag filter again cannot be too big.Cloth bag removes
The temperature drop of dirt device can effectively be solved by way of keeping the temperature to body of deduster, but stability contorting enters bag-type dust
Flue-gas temperature in device is a technical problem to be solved urgently.
Utility model content
Based on the above, the purpose of this utility model is to provide a kind of flue gas processing device and boiler systems, with steady
Fixed control enters the flue-gas temperature in bag filter, and flue gas is made to achieve the effect that preferable dedusting and denitration process.
In order to achieve the above object, the utility model uses following technical scheme:
A kind of flue gas processing device, comprising: thermostat unit, the thermostat unit include adjust component be connected to
The first exhaust gases passes and the second exhaust gases passes, it is described adjust component be used for adjusts process first exhaust gases passes in not changing
The flow of the flue gas of heat；Dust removing units flow through the flue gas of first exhaust gases passes not exchanged heat and flow through described second
Enter the dust removing units by third exhaust gases passes after flue gas mixing after the heat exchange of exhaust gases passes；Denitration unit, institute
It states denitration unit to be connected to the dust removing units, the flue gas after dust removal process is able to enter in the denitration unit.
As a kind of flue gas processing device, the adjusting component includes first switch valve, and the first switch valve setting exists
On first exhaust gases passes, for controlling the unlatching and closure of first exhaust gases passes.
As a kind of flue gas processing device, the adjusting component further includes controller, and the controller is opened with described first
Valve electrical connection is closed, for controlling the opening and closing degree of the first switch valve.
As a kind of flue gas processing device, the adjusting component further includes temperature sensor, the temperature sensor setting
On the third exhaust gases passes, the temperature sensor is connect with the controller communication.
As a kind of flue gas processing device, it is single that spray is additionally provided between the third exhaust gases passes and the dust removing units
Member, the spray unit are electrically connected with the controller.
As a kind of flue gas processing device, flowmeter is provided on first exhaust gases passes, along the cigarette not exchanged heat
The circulating direction of gas, the flowmeter are located at the downstream of the first switch valve.
As a kind of flue gas processing device, the flue gas processing device further includes outlet air flue, the outlet air flue and institute
The connection of denitration unit is stated, the outlet air flue includes the first air-introduced machine and chimney, and one end of first air-introduced machine takes off with described
Nitre unit is connected, and the other end of first air-introduced machine is connected with the chimney.
As a kind of flue gas processing device, expansion joint is provided on first exhaust gases passes.
A kind of boiler system, comprising: boiler components and such as above-mentioned flue gas processing device, the boiler components include air inlet
End and outlet air end, the air intake are connected to the first exhaust gases passes, and the outlet air end is connected to the second exhaust gases passes.
As a kind of preferred embodiment of boiler system, the second air-introduced machine is provided on first exhaust gases passes.
The utility model has the following beneficial effects:
The utility model provides a kind of flue gas processing device, which is provided with dust removing units and denitration list
Member, can be dusted simultaneously the flue gas of discharge and denitration process, avoid entering denitration unit, shadow due to the dust in flue gas
The effect of denitration is rung；By the way that thermostat unit is arranged, the flue gas after heat exchange is mixed with the flue gas not exchanged heat, with control
System enters the flue-gas temperature of dust removing units, and the flue gas by filtering completion in dust removing units is made to enter denitration list with temperature appropriate
Member, it is ensured that dedusting and denitration process can be smoothly effectively performed in the flue gas of discharge, reduce pollution on the environment.
The utility model also provides a kind of boiler system, which includes boiler components and flue gas processing device, leads to
It crosses and the flue gas discharged in boiler components is handled using flue gas processing device, effectively reduce the dirt caused by environment
Dye.
Detailed description of the invention
It, below will be to the utility model embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to the content of the utility model embodiment and these attached drawings.
Fig. 1 is the structural schematic diagram of boiler system provided by the utility model.
In figure:
The first exhaust gases passes of 10-, 11- controller, 12- first switch valve, 13- temperature sensor, 14- spray unit, 15-
Flowmeter, the second air-introduced machine of 16-, 17- expansion joint；
2- dust removing units, the second exhaust gases passes of 20-；
3- denitration unit, 30- third exhaust gases passes；
4- outlet air flue, the first air-introduced machine of 41-, 42- chimney；
5- boiler components, 501- second switch valve, the first boiler of 51-, the second boiler of 52-.
Specific embodiment
The technical issues of to solve the utility model, the technical solution of use and the technical effect that reaches are clearer,
It is described in further detail below in conjunction with technical solution of the attached drawing to the utility model embodiment, it is clear that described reality
Applying example is only the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention,
It is practical new to belong to this for those skilled in the art's every other embodiment obtained without creative efforts
The range of type protection.
As shown in Figure 1, the boiler system includes boiler components 5, boiler components 5 the present embodiment provides a kind of boiler system
It is provided with air intake and outlet air end, the flue gas not exchanged heat is entered by air intake, after being exchanged heat inside boiler components 5, by going out
Wind end is expelled to atmosphere, but is directly discharged to atmosphere and will cause the pollution of atmosphere, and therefore, which further includes at flue gas
Manage device.
The nitrogen oxides contained in the flue gas that boiler components 5 are discharged is the main source of atmospheric pollution, can destroy ozone layer, make
At greenhouse effects, natural environment and the health of the mankind are seriously affected, therefore, which includes denitration unit 3.It is preferred that
Ground, denitration unit 3 carry out denitration process to flue gas using low temperature SCR denitration system.Specifically, denitration unit 3 is arranged in pot
The outlet air end of furnace module 5 is introduced into after denitration unit 3 completes denitration process by the flue gas being discharged in boiler components 5 and is discharged to again greatly
In gas.
Further, the dust content that boiler components 5 are discharged is larger, and granularity of dust is smaller, low containing causing in dust
The substance of catalyst poisoning in warm SCR denitration system easily leads to catalyst blockage of the micro orifice, and then influences low temperature SCR denitration system
Denitration effect.Therefore, which further includes dust removing units 2, and the outlet air of boiler components 5 is arranged in dust removing units 2
Between end and denitration unit 3.After the flue gas being discharged in boiler components 5 enters the completion dust removal process of dust removing units 2, denitration is entered back into
Unit 3 completes denitration process, is finally discharged in atmosphere.Preferably, dust removing units 2 use bag filter, bag filter
Better dust removal effect.
Wherein, boiler components 5, the Inner Constitution of bag filter and low temperature SCR denitration system and working principle are
The prior art does not do extra narration herein.
Due to bag filter highest can bearing temperature generally require by flue-gas temperature control at 270 DEG C hereinafter, and low
The temperature of the catalyst requirement flue gas of warm SCR denitration system is controlled at 240 DEG C or more.This requires should control into cloth bag
The flue-gas temperature of deduster cannot be too high, and controlling the smoke temperature drop after bag filter again cannot be too big.To deduster
The mode that ontology is kept the temperature can effectively control the smoke temperature drop after bag filter.
In order to effectively control the flue-gas temperature into bag filter, which is additionally provided with temperature and adjusts list
Member, thermostat unit include the first exhaust gases passes 10 and the second exhaust gases passes 20 for adjusting component and connection, adjust component and use
In the flow for adjusting the flue gas not exchanged heat passed through in the first exhaust gases passes 10.Cigarette after flowing through the heat exchange of the second exhaust gases passes 20
Gas passes through third exhaust gases passes 30 after mixing with the flue gas not exchanged heat for flowing through the first exhaust gases passes 10 and enters dust removing units 2.Tool
Body, the flue-gas temperature after heat exchange is lower than the flue-gas temperature not exchanged heat, after the heat exchange of the flue gas of high temperature not exchanged heat and low temperature
Flue gas mixing, the adjustable temperature into the flue gas in dust removing units 2.Component is adjusted by setting, adjusts and passes through first
The flow of the flue gas not exchanged heat in exhaust gases passes 10 can neatly adjust the temperature of mixed flue gas, keep it in
Within the scope of suitable temperature, the catalyst in low temperature SCR denitration system is protected, it is ensured that flue gas processing device, which has, preferably to be removed
Dirt and denitration effect.Since the temperature for flowing through the flue gas not exchanged heat in the first exhaust gases passes 10 is higher, the first exhaust gases passes 10
On be provided with expansion joint 17, to absorb the size changing amount of exhaust gases passes, the convenient flue gas not exchanged heat passes through.In the present embodiment
In, the material of expansion joint 17 is metal.
Further, the air intake of boiler components 5 is connected to the first exhaust gases passes 10, outlet air end and the second exhaust gases passes
20 connections.Specifically, the flue gas not exchanged heat is respectively enterd in boiler components 5 and the first exhaust gases passes 10 by flue collector.Due to pot
There are pressure difference, the flue gas not exchanged heat in flue collector enters mostly in boiler components 5 for the air intake of furnace module 5 and outlet air end, is
So that the flue gas not exchanged heat is can smoothly enter into the first exhaust gases passes 10, the second air-introduced machine 16 be additionally provided on the first exhaust gases passes 10,
The frequency for adjusting the second air-introduced machine 16 makes the pressure difference at 16 both ends of the second air-introduced machine be greater than the air intake and outlet air end of boiler components 5
Pressure difference.
Further, it is provided with second switch valve 501 on flue collector, when enabling the boiler system, opens second switch
It is used after valve 501, when stopping using the boiler system, closes second switch valve 501.
Further, adjusting component includes first switch valve 12, and first switch valve 12 is arranged on the first exhaust gases passes 10,
For controlling the unlatching and closure of the first exhaust gases passes 10.In order to realize the unlatching of automation control first switch valve 12 and close
It closes, adjusting component further includes controller 11, and controller 11 is electrically connected with first switch valve 12, for controlling first switch valve 12
Opening and closing degree.Preferably, first switch valve 12 is set as electric butterfly valve, certainly in other embodiments, as long as can be realized benefit
It can be adopted with control by the structure of the first switch valve 12 of the flow of the flue gas not exchanged heat in the first exhaust gases passes 10
With.
Further, adjusting component further includes temperature sensor 13, and temperature sensor 13 is arranged in third exhaust gases passes 30
On, temperature sensor 13 and 11 communication connection of controller.Specifically, temperature sensor 13 passes through third exhaust gases passes for detecting
The temperature of mixed flue gas in 30, and the temperature signal is transmitted in controller 11, controller 11 judges whether the temperature is located
In within the scope of default temperature, if the temperature is lower than the minimum value of preset temperature range, first switch valve 12 is controlled, is increased
The opening and closing degree of big first switch valve 12, passes through the flue gas of more high temperature not exchanged heat by the first exhaust gases passes 10, and with
Flue gas mixing after heat exchange, to improve the temperature of the flue gas into dust removing units 2；If the temperature is higher than preset temperature model
The maximum value enclosed then controls first switch valve 12, reduces the opening and closing degree of first switch valve 12, reduces the cigarette of high temperature not exchanged heat
Flow of the gas in the first exhaust gases passes 10, to be lowered into the temperature of the flue gas of dust removing units 2.
Wherein, the model of controller 11 and temperature sensor 13 and structure are the prior art, do not do extra narration herein.
In order to precisely control the flow into the flue gas not exchanged heat in the first exhaust gases passes 10, accurately to control
Into the temperature of the mixed flue gas of dust removing units 2, flowmeter 15 is provided on the first exhaust gases passes 10, along the flue gas not exchanged heat
Circulating direction, flowmeter 15 is located at the downstream of first switch valve 12.
When mixed flue gas when the temperature is excessively high, the flue gas not exchanged heat in order to prevent cannot flow into third exhaust gases passes 30 in time
It is mixed with the flue gas after heat exchange, causes temperature to adjust not in time, spray is additionally provided between third exhaust gases passes 30 and dust removing units 2
Unit 14 is drenched, spray unit 14 is electrically connected with controller 11.When the mixed flue gas temperature in third exhaust gases passes 30 is higher, temperature
Signal is passed to controller 11 by degree sensor 13, and controller 11 starts spray unit 14, spray unit 14 by sprinkling water mist come
Have the function that fast cooling.
Further, the end of denitration unit 3 is also connected with outlet air flue 4, and outlet air flue 4 includes 41 He of the first air-introduced machine
One end of chimney 42, the first air-introduced machine 41 is connected with denitration unit 3, and the other end of the first air-introduced machine 41 is connected with chimney 42.It is logical
The first air-introduced machine 41 of setting is crossed, the flue gas after dedusting and denitration process can be quickly extracted, make it by being discharged in chimney 42.
In actual operation, boiler components 5 are typically provided with multiple to do stand-by boiler.For example, in the present embodiment, pot
There are two the settings of furnace module 5, respectively the first boiler 51 and the second boiler 52, one of as boiler is mainly used, separately
Outer one is used as stand-by boiler.First boiler 51 and the second boiler 52 are provided with air intake and outlet air end, 51 He of the first boiler
The air intake of second boiler 52 is connected to the first exhaust gases passes 10 respectively, the outlet air end difference of the first boiler 51 and the second boiler 52
It is connected to the second exhaust gases passes 20.In this way, the first boiler 51 and the second boiler 52 independence or can work at the same time, mutually
Between it is unaffected.It is provided with third switch valve in each boiler components 5, for controlling the opening and closing of boiler components 5.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright
Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments
The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from
It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended
Scope of the claims determine.
Claims (10)
1. a kind of flue gas processing device characterized by comprising
Thermostat unit, the thermostat unit include the first exhaust gases passes (10) and the second cigarette for adjusting component and connection
Gas channel (20), the component that adjusts are used to adjust the stream by the flue gas not exchanged heat in first exhaust gases passes (10)
Amount；
Dust removing units (2) flow through the flue gas of first exhaust gases passes (10) not exchanged heat and flow through second flue gas
Enter the dust removing units (2) by third exhaust gases passes (30) after flue gas mixing after the heat exchange in channel (20)；
Denitration unit (3), the denitration unit (3) are connected to the dust removing units (2), the flue gas energy after dust removal process
Enough enter in the denitration unit (3).
2. flue gas processing device according to claim 1, which is characterized in that the adjusting component includes first switch valve
(12), the first switch valve (12) is arranged on first exhaust gases passes (10), for controlling first exhaust gases passes
(10) unlatching and closure.
3. flue gas processing device according to claim 2, which is characterized in that the adjusting component further includes controller
(11), the controller (11) is electrically connected with the first switch valve (12), for controlling opening for first switch valve (12)
Conjunction degree.
4. flue gas processing device according to claim 3, which is characterized in that the adjusting component further includes temperature sensor
(13), the temperature sensor (13) is arranged on the third exhaust gases passes (30), the temperature sensor (13) with it is described
Controller (11) communication connection.
5. flue gas processing device according to claim 3, which is characterized in that the third exhaust gases passes (30) are removed with described
It is additionally provided between dirt unit (2) spray unit (14), the spray unit (14) is electrically connected with the controller (11).
6. flue gas processing device according to claim 2, which is characterized in that be provided on first exhaust gases passes (10)
Flowmeter (15), along the circulating direction for the flue gas not exchanged heat, the flowmeter (15) is located at the first switch valve (12)
Downstream.
7. flue gas processing device according to claim 1, which is characterized in that the flue gas processing device further includes wind and smoke out
Road (4), the outlet air flue (4) are connected to the denitration unit (3), and the outlet air flue (4) includes the first air-introduced machine (41)
With chimney (42), one end of first air-introduced machine (41) is connected with the denitration unit (3), first air-introduced machine (41)
The other end is connected with the chimney (42).
8. flue gas processing device according to claim 1, which is characterized in that be provided on first exhaust gases passes (10)
Expansion joint (17).
9. a kind of boiler system characterized by comprising boiler components (5) and flue gas as claimed in any one of claims 1 to 6
Processing unit, the boiler components (5) include air intake and outlet air end, and the air intake is connected to the first exhaust gases passes (10),
The outlet air end is connected to the second exhaust gases passes (20).
10. boiler system according to claim 9, which is characterized in that be provided on first exhaust gases passes (10)
Two air-introduced machines (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920368585.0U CN209706102U (en) | 2019-03-21 | 2019-03-21 | A kind of flue gas processing device and boiler system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920368585.0U CN209706102U (en) | 2019-03-21 | 2019-03-21 | A kind of flue gas processing device and boiler system |
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| Publication Number | Publication Date |
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| CN209706102U true CN209706102U (en) | 2019-11-29 |
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ID=68647210
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| CN201920368585.0U Active CN209706102U (en) | 2019-03-21 | 2019-03-21 | A kind of flue gas processing device and boiler system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812829A (en) * | 2019-03-21 | 2019-05-28 | 河北视窗玻璃有限公司 | A kind of flue gas processing device and boiler system |
-
2019
- 2019-03-21 CN CN201920368585.0U patent/CN209706102U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812829A (en) * | 2019-03-21 | 2019-05-28 | 河北视窗玻璃有限公司 | A kind of flue gas processing device and boiler system |
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