CN106390724A - Flue-gas purifying system for boiler - Google Patents

Flue-gas purifying system for boiler Download PDF

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Publication number
CN106390724A
CN106390724A CN201611074768.9A CN201611074768A CN106390724A CN 106390724 A CN106390724 A CN 106390724A CN 201611074768 A CN201611074768 A CN 201611074768A CN 106390724 A CN106390724 A CN 106390724A
Authority
CN
China
Prior art keywords
flue gas
filter
gas purification
reaction tower
flue
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611074768.9A
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Chinese (zh)
Inventor
黄星
寇向上
刘颖
赖栋文
林荷
王妨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujian Longking Co Ltd.
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Fujian Longking Co Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujian Longking Co Ltd. filed Critical Fujian Longking Co Ltd.
Priority to CN201611074768.9A priority Critical patent/CN106390724A/en
Publication of CN106390724A publication Critical patent/CN106390724A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2411Filter cartridges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/50Sulfur oxides
    • B01D53/501Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/502Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/50Sulfur oxides
    • B01D53/508Sulfur oxides by treating the gases with solids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8621Removing nitrogen compounds
    • B01D53/8625Nitrogen oxides
    • B01D53/8631Processes characterised by a specific device
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/12Methods and means for introducing reactants
    • B01D2259/124Liquid reactants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/12Methods and means for introducing reactants
    • B01D2259/128Solid reactants

Abstract

The invention discloses a flue-gas purifying system for a boiler. The flue-gas purifying system comprises a mixed reaction tower and a dust and nitrate filter which are communicated. The flue-gas purifying system is characterized in that flue gas is firstly desulfurized by the mixed reaction tower, then is dedusted and denitrified by the dust and nitrate filter, and the flue-gas flow is firstly dedusted and then is denitrified when passing through the dust and nitrate filter. Therefore, the flue gas is purified according to the sequence of desulfurization, dedusting and denitrification, so that the generation of NH4HSO4 in denitrification of the flue gas is avoided, further ash blocking of an air preheater and corrosion of equipment are avoided, and the catalyst poisoning caused by alkali metal and dust particles in the flue gas is avoided to guarantee the efficiency of denitrifying reaction.

Description

A kind of flue gas purification system of boiler
Technical field
The present invention relates to flue gases purification field, particularly to a kind of flue gas purification system of boiler.
Background technology
The pollutant of Industrial Boiler discharge mainly include flue dust, oxysulfide, nitrogen oxides etc., wherein, oxysulfide There is to lead to the increase of burn into flue gas opacity, the formation of acid rain of power station equipment, be discharged in the air and also can Lead to the respiratory tract disease of human body.
At present, conventional Industrial Boiler smoke processing system is as shown in figure 1, Fig. 1 is flue gas purification system in prior art Structural representation, its flue gas treating process route is:Boiler 1 ' flue gas, after economizer 8 ' discharge, enters Benitration reactor 3 ', ammonia water spray device 31 ' spray into ammonia in Benitration reactor 3 ', in the presence of catalyst in Benitration reactor 3 ', flue gas There is denitration reaction, remove denitrification and a small amount of particulate matter, the flue gas air inlet preheater 2 ' heat exchange after denitration, temperature drops Low, subsequently into cleaner unit 4 ' dedusting, enter back into desulfurizing tower 5 ', desulfurizing agent is sprayed in desulfurizing tower 5 ' by desulfurizing agent ejector 51 ', There is desulphurization reaction in flue gas, finally, clean flue gas are discharged through chimney 7 ' in the presence of blower fan 6 '.
When flue gas flows through above-mentioned flue gas purification system, first carry out denitration reaction, then carry out dedusting and desulphurization reaction again, should Technical process suffers from the drawback that:Benitration reactor 3 ', due to there is catalyst, can make the SO in flue gas2It is oxidized to SO3, SO3 With the NH escaping3Generate NH4HSO4(NH4)2SO4, NH4HSO4There is corrosivity and viscosity, may result in air preheater 2 ' to block And follow-up equipment corrosion, meanwhile, also result in catalyst poisoning, affect denitration reaction efficiency.
In view of the defect that above-mentioned flue gas purification system exists is it would be highly desirable to provide a kind of flue gas desulfurization operation to be located at denitrating flue gas work Flue gas purification system before sequence.
Content of the invention
For solving above-mentioned technical problem, for providing a kind of flue gas purification system of boiler, flue gas flows through the purpose of the present invention When, first blended reaction tower desulfurization, then through dirt nitre filter dedusting denitration, gas cleaning order is followed successively by:Desulfurization, dedusting, de- Nitre, thus avoid generating NH during denitrating flue gas4HSO4, and then avoid Ash Blocking in Air Preheater and equipment corrosion, and avoid in flue gas Alkali metal and dust granules cause catalyst poisoning, to ensure the efficiency of denitration reaction.
In order to realize the purpose of the present invention, the present invention provides a kind of flue gas purification system of boiler, including be interconnected Hybrid reaction tower and dirt nitre filter, when flue gas flows through, first through described hybrid reaction tower desulfurization, then remove through described dirt nitre filter Dirt denitration, and flue gas flows through denitration after first dedusting during described dirt nitre filter.
It is arranged such, compared with prior art, when flue gas flows through the flue gas purification system in the present invention, purification order is: Desulfurization, dedusting, denitration, had removed the oxysulfide in flue gas before denitration reaction, therefore, when flue gas is in dirt nitre portion When carrying out denitration reaction, it is to avoid the catalyst in dirt nitre portion is by SO2It is oxidized to SO3, and avoid SO3With the NH escaping3Generate NH4HSO4(NH4)2SO4, thus avoiding due to NH4HSO4Corrosivity and viscosity and the Ash Blocking in Air Preheater that causes and after Continuous equipment corrosion.
Meanwhile, before dust removal process is located at denitration reaction, most alkali gold in flue gas can be removed before denitration reaction Metal particles and dust, thus when avoiding flue gas to carry out denitration reaction, alkali metal particles cause catalyst poisoning, simultaneously, it is to avoid cigarette Dust in gas causes the erosive wear of catalyst, thus improving the denitration efficiency of flue gas purification system, and ensures catalyst Service life.
Alternatively, described hybrid reaction tower is connected with inlet air stack, and described inlet air stack is provided with desulfurizing agent ejector, is used for Described desulfurizing agent is sprayed in described inlet air stack and mixes with flue gas.
Alternatively, described desulfurizing agent includes slaked lime powder and NaOH solution, is sprayed into described respectively with different ejectors Inlet air stack.
Alternatively, described hybrid reaction tower bottom is additionally provided with air suspension device.
Alternatively, it is provided with some filter elements in described dirt nitre filter, described filter element is by biodegradable The loose structure that fiber interweaving is formed, and with SCR catalyst Particles dispersed, described filter element surface is coated with smooth film, uses Contact with described SCR catalyst in stoping the dust in flue gas;
Described flue gas purification system is additionally provided with ammonia-gas spraying device.
Alternatively, the described desulfurizing agent in flue gas is attached to described filter element surface, for flue gas desulfurization.
Alternatively, described SCR catalyst granule is nano whiskers structure, and the aperture of described smooth film is less than 0.5~0.1 μ m.
Alternatively, described ammonia-gas spraying device is located at described hybrid reaction tower, and is located at described hybrid reaction tower flue gas import Top.
Alternatively, it is additionally provided with card in described dirt nitre filter, described filter element hangs on described card, and passes through Pressing plate compresses, and between described pressing plate and described filter element, is respectively provided with pad between described filter element and described card.
Alternatively, it is additionally provided with the material back-conveying device connecting described dirt nitre filter ash bucket and described hybrid reaction tower.
Brief description
Fig. 1 is the structural representation of flue gas purification system in prior art;
Fig. 2 is the structural representation of the flue gas purification system of boiler provided by the present invention.
In Fig. 1:
1 ' boiler, 2 ' air preheaters, 3 ' Benitration reactors, 31 ' ammonia water spray devices, 4 ' cleaner units, 5 ' desulfurizing towers, 51 ' Desulfurizing agent ejector, 6 ' blower fans, 7 ' chimneys, 8 ' economizers.
In Fig. 2:
1 boiler, 2 air preheaters, 3 inlet air stack, 31 desulfurizing agent ejectors, 4 hybrid reaction towers, 41 ammonia-gas spraying devices, 42 Air suspension device, 5 dirt nitre filters, 51 air-purifying chambers, 511 cards, 52 filter elements, 53 ash buckets, 54 material back-conveying devices, 6 wind Machine, 7 chimneys, 8 economizers.
Specific embodiment
In order that those skilled in the art more fully understands technical scheme, below in conjunction with the accompanying drawings and specifically real The present invention is described in further detail to apply example.
Refer to accompanying drawing 2, Fig. 2 is the structural representation of the flue gas purification system of boiler provided by the present invention.
In a kind of specific embodiment, the present invention provides a kind of flue gas purification system of boiler 1, as shown in Fig. 2 boiler 1 The high-temperature flue gas that burning produces escape and enter in inlet air stack 3 from economizer 8, and this flue gas purification system also includes mutually interconnecting Logical hybrid reaction tower 4 and dirt nitre filter 5, wherein, hybrid reaction tower 4 is used for the sweetening process of flue gas, and dirt nitre filter 5 is used Dedusting denitrification process in flue gas.
When flue gas flows through this flue gas purification system, first blended reaction tower 4 desulfurization, then take off through dirt nitre filter 5 dedusting Nitre, and flue gas flows through denitration after first dedusting during described dirt nitre filter 5.
It is arranged such, compared with the prior art shown in Fig. 1, when flue gas flows through the flue gas purification system in the present embodiment, Purification order is:Desulfurization, dedusting, denitration, had removed the oxysulfide in flue gas before denitration reaction, therefore, have worked as cigarette When gas carries out denitration reaction in dirt nitre portion, it is to avoid the catalyst in dirt nitre portion is by SO2It is oxidized to SO3, and avoid SO3With escape NH3Generate NH4HSO4(NH4)2SO4, thus avoiding due to NH4HSO4Corrosivity and viscosity and the air preheater 2 that causes Stifled ash and follow-up equipment corrosion.
Meanwhile, before dust removal process is located at denitration reaction, most alkali gold in flue gas can be removed before denitration reaction Metal particles and dust, thus when avoiding flue gas to carry out denitration reaction, alkali metal particles cause catalyst poisoning, simultaneously, it is to avoid cigarette Dust in gas causes the erosive wear of catalyst, thus improving the denitration efficiency of flue gas purification system, and ensures catalyst Service life.
Further, as shown in Fig. 2 hybrid reaction tower 4 is connected with inlet air stack 3, and inlet air stack 3 is provided with desulfurizing agent spray Emitter 31, is mixed with flue gas for spraying into desulfurizing agent in inlet air stack 3.
It is appreciated that this desulfurizing agent ejector 31 is it is not necessary to located at inlet air stack 3, the desulphurization reaction due to flue gas exists Occur in hybrid reaction tower 4, therefore, in order to realize mixing desulfurizing agent with flue gas, also can be by desulfurizing agent ejector 31 located at mixed Close reaction tower 4, but, in the present embodiment, when it is located at inlet air stack 3, can occur desulphurization reaction before, make flue gas with Desulphurizer mixing is fully and uniform, thus improving the efficiency of desulphurization reaction.
In addition, desulfurizing agent is sprayed in inlet air stack 3 by desulfurizing agent ejector 31 in spray regime, thus improving cigarette further Gas and the mixing uniformity of desulfurizing agent.
Specifically, above-mentioned desulfurizing agent is slaked lime powder and NaOH solution, sprays into air inlet cigarette with different ejectors respectively Road 3 is it is generally the case that the calcium to sulphur mole ratio > 1 of this desulfurizing agent:1, sodium sulfur mol ratio < 2:1, and the calcium to sulphur mole ratio of desulfurizing agent Arbitrarily set on the premise of meeting above-mentioned requirements according to practical situation with sodium sulfur mol ratio, be not construed as limiting herein.
In addition, slaked lime in the present embodiment adopts ultra-fine grain diameter mealy structure, meanwhile, reduce flue gas flow rate so that cigarette The time that gas has abundance with desulfurizing agent mixs homogeneously, thus improving the utilization rate of slaked lime, and reduces the operation of hybrid reaction tower 4 Resistance.
Further, hybrid reaction tower 4 bottom is additionally provided with air suspension device 42, and this air suspension device 42 is prevented from taking off The materials such as sulfur agent, dust settle and are gathered in hybrid reaction tower 4 bottom, thus improving the utilization rate of desulfurizing agent, simultaneously additionally it is possible to Flue gas and desulfurizing agent is promoted to flow to dirt nitre filter 5.
In various embodiments above, as shown in Fig. 2 being provided with some filter elements 52 in dirt nitre filter 5, this filter element 52 There is the SCR catalyst for denitration reaction and the filter house for Chalk-dust filtering, so that flue gas first passes through filter portion and filters, then warp SCR catalyst denitration.
Specifically, this filter element 52 is the loose structure being formed by biodegradable fiber interweaving, and is catalyzed with SCR Agent Particles dispersed, meanwhile, filter element 52 surface is coated with smooth film, for stoping the dust in flue gas from entering SCR catalyst Interior.
It is arranged such, the smooth film on filter element 52 surface can filter dust in flue gas, NH4HSO4Deng material, thus Avoid corrosivity and the higher NH of viscosity4HSO4It is attached to SCR catalyst, the SCR catalyst blocking causing, and then ensure that SCR urges Agent has higher denitration efficiency, simultaneously additionally it is possible to prevent SCR catalyst due to being attached with NH4HSO4And cause flue gas to pass through When resistance increase, blower fan 6 power consumption that leads to increases, thus ensureing that boiler 1 can normally run, and reduces its energy consumption.
Meanwhile, above-mentioned smooth film can also stop the elements such as arsenic in flue gas, selenium, potassium, sodium from entering in SCR catalyst, prevents Stop its poisoning.Further, since filter element 52 surface smoothness is higher, when dust is contacted with this smooth film, it is difficult to be attached to Filtering element 52 surface, so that be more prone to during using pulse backblowing technology deashing realize.
In addition, biodegradable fiber has good resistance to elevated temperatures, therefore, when high-temperature flue gas flow through, this mistake Filtering element 52 still has good performance so that denitrification process can carry out dedusting denitration at a temperature of 350 DEG C about, and makes The performance of dirt nitre filter 5 is not affected by dust specific resistance and gas temperature, humidity.
In the present embodiment, flue gas purification system is additionally provided with ammonia-gas spraying device 41, and liquefied ammonia or ammonia are passed through by this ammonia-gas spraying device 41 In dirt nitre filter 5, for the denitration reaction of flue gas.
In addition, in various embodiments above, when entering dirt nitre filter 5 after the blended reaction tower of flue gas 4 desulfurization, desulfuration efficiency With sorbent utilization difficult to reach 100%, therefore, in the flue gas in dirt nitre filter 5, it is mixed with partial desulfurization agent.Work as flue gas When flowing through filter element 52 surface, this partial desulfurization agent is filtered and is attached to filter element 52 surface it is clear that this partial desulfurization Agent remains able to for flue gas desulfurization, thus removing the oxysulfide in flue gas further, to improve this flue gas purification system Desulfuration efficiency.
Specifically, above-mentioned SCR catalyst granule is nano whiskers structure, and the aperture of smooth film is less than 0.5~0.1 μm.
The porosity of above-mentioned smooth film is higher, and aperture is less, and up to nanoscale, for example, the aperture of smooth film can be 0.3 μ m.In addition, this nanoscale smooth film can be Al2O3Layer.Meanwhile, SCR catalyst granule is uniformly distributed in inside smooth film, and nanometer The activating surface that the catalyst granules of level contributes to increasing catalyst amasss, thus improving the time of contact of flue gas and SCR catalyst, And then improve the denitration efficiency of flue gas.
Certainly, the aperture of above-mentioned smooth film, it is not necessary to being 0.5~0.1 μm, is flexibly arranged also dependent on being actually needed, It is not construed as limiting herein.
On the other hand, as shown in Fig. 2 above-mentioned ammonia-gas spraying device 41 is located at hybrid reaction tower 4, and it is located at hybrid reaction tower 4 cigarette The top of gas import.
Certainly, above-mentioned ammonia-gas spraying device 41 is it is not necessary to located at hybrid reaction tower 4, the denitration reaction due to flue gas betides In dirt nitre filter 5, and ammonia-gas spraying device 41 is to realize the purpose that liquefied ammonia or ammonia are mixed with flue gas, and therefore, it also can be located at In dirt nitre filter 5.But, in the present embodiment, when ammonia-gas spraying device 41 is in mixing reactor 4, flue gas and ammonia or ammonia The mixed path of water and incorporation time are all longer, thus greatly improving the mixing uniformity of the two, and then improve denitration reaction Efficiency.
In addition, as shown in Fig. 2 being additionally provided with card 511 in dirt nitre filter 5, filter element 52 hangs on card 511, And compressed by pressing plate, and between pressing plate and filter element 52, be respectively provided with pad between filter element 52 and card 511.
It is arranged such, it is possible to increase the reliability that filter element 52 is installed is additionally it is possible to prevent filter element 52 in card 511 On rock, thus avoid adjacent filter elements 52 bottom collision, friction lead to filter element 52 to damage.Simultaneously additionally it is possible to avoid Flue gas leaks between card 511 and filter element 52.
In various embodiments above, as shown in Fig. 2 this flue gas purification system be additionally provided with connection dirt nitre filter 5 ash bucket 53 with The material back-conveying device 54 of hybrid reaction tower 4, it is anti-that the material of deposition in ash bucket 53 is returned to mixing by this material back-conveying device 54 Answer in tower 4.
It should be noted that during real reaction, the utilization rate difficult to reach 100% of desulfurizing agent, lead to enter the filtration of dirt nitre It is mixed with unreacted desulfurizing agent on a small quantity, this partial desulfurization agent enters ash charge under the filtration of filter element 52 in the flue gas of device 5 In bucket 53, meanwhile, after filter element 52 dedusting, dust falls in ash bucket 53 flue gas.Therefore, in the present embodiment, by setting Unreacted desulfurizing agent foldback back-mixing can be closed reaction tower 4, thus improving the utilization rate of desulfurizing agent by material back-conveying device 54.
In various embodiments above, as shown in Fig. 2 after the blended reaction tower of flue gas 4 desulfurization, dirt nitre filter 5 dedusting denitration Clean flue gas discharge from the top of dirt nitre filter 5 air-purifying chamber 51, and enter heat exchange in air preheater 2, after temperature reduces, Discharge from chimney 7 in the presence of blower fan 6, complete the purification process of flue gas.
Above a kind of flue gas purification system of boiler provided by the present invention is described in detail.Used herein Specific case is set forth to the principle of the present invention and embodiment, and the explanation of above example is only intended to help understand this The method of invention and its core concept.It should be pointed out that for those skilled in the art, without departing from this On the premise of bright principle, the present invention can also be carried out with some improvement and modify, these improve and modification also falls into present invention power In the protection domain that profit requires.

Claims (10)

1. a kind of flue gas purification system of boiler, including the hybrid reaction tower (4) being interconnected and dirt nitre filter (5), it is special Levy and be, when flue gas flows through, first through the desulfurization of described hybrid reaction tower (4), then through described dirt nitre filter (5) dedusting denitration, and Flue gas flows through denitration after first dedusting during described dirt nitre filter (5).
2. flue gas purification system according to claim 1 is it is characterised in that described hybrid reaction tower (4) and inlet air stack (3) connect, described inlet air stack (3) is provided with desulfurizing agent ejector (31), for described desulfurizing agent is sprayed into described inlet air stack (3) mix with flue gas in.
3. flue gas purification system according to claim 2 it is characterised in that described desulfurizing agent include slaked lime powder and NaOH solution, sprays into described inlet air stack (3) with different ejectors respectively.
4. flue gas purification system according to claim 2 is it is characterised in that described hybrid reaction tower (4) bottom is additionally provided with Air suspension device (42).
5. the flue gas purification system according to any one of claim 2-4 is it is characterised in that described dirt nitre filter (5) Inside it is provided with some filter elements (52), described filter element (52) is to be tied by the porous that biodegradable fiber interweaving is formed Structure, and with SCR catalyst Particles dispersed, described filter element (52) surface is coated with smooth film, for stoping the powder in flue gas Dirt is contacted with described SCR catalyst;
Described flue gas purification system is additionally provided with ammonia-gas spraying device (41).
6. flue gas purification system according to claim 5 it is characterised in that the described desulfurizing agent in flue gas be attached to described Filter element (52) surface, for flue gas desulfurization.
7. flue gas purification system according to claim 5 is it is characterised in that described SCR catalyst granule is nano whiskers Structure, the aperture of described smooth film is less than 0.5~0.1 μm.
8. flue gas purification system according to claim 5 is it is characterised in that described ammonia-gas spraying device (41) is located at described mixing Reaction tower (4), and it is located at the top of described hybrid reaction tower (4) gas approach.
9. flue gas purification system according to claim 5 is it is characterised in that be additionally provided with described dirt nitre filter (5) Card (511), described filter element (52) hangs on described card (511), and is compressed by pressing plate, described pressing plate and described mistake Between filtering element (52), between described filter element (52) and described card (511), it is respectively provided with pad.
10. the flue gas purification system according to any one of claim 1-4 is it is characterised in that be additionally provided with the described dirt of connection Nitre filter (5) ash bucket (53) and the material back-conveying device (54) of described hybrid reaction tower (4).
CN201611074768.9A 2016-11-29 2016-11-29 Flue-gas purifying system for boiler Pending CN106390724A (en)

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Application Number Priority Date Filing Date Title
CN201611074768.9A CN106390724A (en) 2016-11-29 2016-11-29 Flue-gas purifying system for boiler

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Application Number Priority Date Filing Date Title
CN201611074768.9A CN106390724A (en) 2016-11-29 2016-11-29 Flue-gas purifying system for boiler

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110252051A (en) * 2019-05-27 2019-09-20 山东中琦环保设备制造有限公司 A kind of boiler smoke dust-removal and desulfurizing denitration and the method for removing dioxin

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110252051A (en) * 2019-05-27 2019-09-20 山东中琦环保设备制造有限公司 A kind of boiler smoke dust-removal and desulfurizing denitration and the method for removing dioxin
CN110252051B (en) * 2019-05-27 2020-11-17 山东中琦环保设备制造有限公司 Method for dedusting, desulfurizing and denitrating boiler flue gas and removing dioxin

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