CN106807211A - Prevent the oxidation net and SCR denitration device of the escaping of ammonia - Google Patents

Prevent the oxidation net and SCR denitration device of the escaping of ammonia Download PDF

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Publication number
CN106807211A
CN106807211A CN201611239243.6A CN201611239243A CN106807211A CN 106807211 A CN106807211 A CN 106807211A CN 201611239243 A CN201611239243 A CN 201611239243A CN 106807211 A CN106807211 A CN 106807211A
Authority
CN
China
Prior art keywords
net
oxidation
ammonia
silk screen
mentioned
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
CN201611239243.6A
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Chinese (zh)
Inventor
李瑞欣
王仕龙
王天堃
张建生
韩平
郑少亮
窦锡亭
张新亮
郭锦基
繆明烽
张有生
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.)
State Grid Energy Hami Coal Mine Co Ltd
Shenhua Group Corp Ltd
Shenhua Guoneng Group Corp Ltd
Original Assignee
State Grid Energy Hami Coal Mine Co Ltd
Shenhua Group Corp Ltd
Shenhua Guoneng Group Corp 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 State Grid Energy Hami Coal Mine Co Ltd, Shenhua Group Corp Ltd, Shenhua Guoneng Group Corp Ltd filed Critical State Grid Energy Hami Coal Mine Co Ltd
Priority to CN201611239243.6A priority Critical patent/CN106807211A/en
Publication of CN106807211A publication Critical patent/CN106807211A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B01D53/81Solid phase processes
    • B01D53/82Solid phase processes with stationary reactants
    • 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
    • B01D53/54Nitrogen compounds
    • B01D53/58Ammonia
    • 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
    • B01D53/75Multi-step processes
    • 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
    • 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
    • B01D53/90Injecting reactants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/10Oxidants

Abstract

This application provides the oxidation net and SCR denitration device that prevent the escaping of ammonia.The oxidation net includes at least one net block, and net block includes oxidant of the silk screen with absorption on silk screen surface.When the oxidation net is applied in SCR denitration device, nitrogen oxides is by catalyst bed and ammonia reaction generation nitrogen and water, when remaining ammonia is through peroxidating net, it is oxidized agent oxidation, and, the product of generation is attracted on silk screen, so to escape ammonia carried out effective control, prevent it from causing secondary pollution to air in escaping into air.

Description

Prevent the oxidation net and SCR denitration device of the escaping of ammonia
Technical field
The application is related to SCR denitration field, prevents the oxidation net of the escaping of ammonia from being filled with SCR denitration in particular to a kind of Put.
Background technology
Nitrogen oxides is a kind of Environmental Pollution thing, mostly from the burning and exhausting of power plant.
At present, in order to avoid in excessive discharged nitrous oxides to air, the widely used SCR methods flue-gas denitration process of power plant Denitration, the method is that ammonia carries out redox reaction with nitrogen oxides in catalyst surface, generates nitrogen and water, course of reaction Do not produce secondary pollution.
SCR method flue-gas denitration process is during reality, it is necessary to could be reached using larger ammonia/nitrogen oxides ratio To comparatively ideal nitrogen oxides percent reduction.Although excessive ammonia is conducive to nitrogen oxides percent reduction with the mol ratio of nitrogen oxides Increase, but excessively the ammonia of penetrating cannot be utilized by denitrification process, and the escaping of ammonia is increased can cause new environmental pollution again, therefore, During flue gas is out of stock to ammonia escape be controlled it is particularly important.
The content of the invention
The main purpose of the application is to provide a kind of oxidation net and SCR denitration device for preventing the escaping of ammonia, existing to solve The problem that ammonia is escaped during having the flue gas in technology out of stock.
To achieve these goals, according to the one side of the application, there is provided a kind of oxidation net for preventing the escaping of ammonia, should Oxidation net includes:At least one net block, above-mentioned net block includes oxidant of the silk screen with absorption on above-mentioned silk screen surface.
Further, above-mentioned net block includes multiple stacked above-mentioned silk screens.
Further, above-mentioned oxidation net includes multiple above-mentioned net blocks, and above-mentioned oxidation net also includes:At least one parting bead, if Put between two adjacent above-mentioned net blocks, for connecting the above-mentioned net block of adjacent two.
Further, multiple above-mentioned net blocks are arranged in array, and above-mentioned parting bead is arranged between the above-mentioned net block of adjacent rows Between the above-mentioned net block of adjacent two row.
Further, the thickness of above-mentioned net block is between 5~15mm.
Further, the aperture of above-mentioned silk screen is 2~10 mesh, and the material of above-mentioned silk screen is carbon steel or stainless steel.
Further, above-mentioned oxidant is alloy chelate.
According to the another aspect of the application, there is provided a kind of SCR denitration device, the SCR denitration device includes:Denitration reaction Device, is connected with flue, and above-mentioned Benitration reactor has in reaction cavity, and above-mentioned reaction cavity and is provided with catalyst bed;It is any Above-mentioned oxidation net is planted, the downstream of above-mentioned catalyst bed is arranged in above-mentioned reaction cavity and is arranged on, above-mentioned oxidation net is used for Aoxidize the ammonia in above-mentioned Benitration reactor and adsorb above-mentioned ammonia it is oxidized after product.
Further, the first plane is the plane perpendicular to smoke movement direction, and above-mentioned oxidation net is flat above-mentioned first The projection of projection on face with above-mentioned reaction cavity in above-mentioned first plane is completely superposed.
Using the technical scheme of the application, aoxidizing net includes oxidant of the silk screen with absorption on silk screen, when by as Oxidation net is applied when in SCR denitration device, and nitrogen oxides is remaining by catalyst bed and ammonia reaction generation nitrogen and water When ammonia is through peroxidating net, agent oxidation is oxidized, also, the product of generation is attracted on silk screen, and then the ammonia to escaping Effective control is carried out, has prevented it from causing secondary pollution to air in escaping into air.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows Meaning property embodiment and its illustrated for explaining the application, does not constitute the improper restriction to the application.In the accompanying drawings:
Fig. 1 shows the structural representation of the oxidation net provided according to a kind of embodiment of the application;And
Fig. 2 shows the structural representation of the SCR denitration device that a kind of embodiment of the application is provided.
Wherein, above-mentioned accompanying drawing is marked including the following drawings:
1st, ammonia-spraying grid;2nd, flue;3rd, Benitration reactor;4th, net is aoxidized;31st, cowling panel;32nd, catalyst bed;41st, net Block;42nd, parting bead;410th, silk screen.
Specific embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative Be also intended to include plural form, additionally, it should be understood that, when in this manual use term "comprising" and/or " bag Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, there is a problem of that ammonia is escaped in existing denitrification process, in order to solve as above Technical problem, present applicant proposes a kind of oxidation net and SCR denitration device for preventing the escaping of ammonia.
In a kind of typical implementation method of the application, there is provided a kind of oxidation net for preventing the escaping of ammonia, as shown in figure 1, The oxidation net includes at least one net block 41, wherein, the net block 41 includes silk screen 410 with absorption on the surface of above-mentioned silk screen 410 Oxidant.
Above-mentioned oxidation net includes oxidant of the silk screen with absorption on silk screen, is applied in SCR when by such oxidation net When in denitrification apparatus, by catalyst bed and ammonia reaction generation nitrogen and water, remaining ammonia is through peroxidating net for nitrogen oxides When, be oxidized agent oxidation, also, generation product be attracted on silk screen, and then to escape ammonia carried out effective control, Prevent it from causing secondary pollution to air in escaping into air.
In order to further such that escape of the net block to ammonia has more preferable control effect, in a kind of embodiment of the application, Above-mentioned net block includes multiple stacked above-mentioned silk screens.
In a kind of embodiment of the application, as shown in figure 1, above-mentioned oxidation net includes multiple net blocks 41, above-mentioned oxidation net is also Including at least one parting bead 42, each parting bead is arranged between two adjacent above-mentioned net blocks 41, for connecting adjacent two State net block 41.And parting bead 42 can also play a part of preferably to fix silk screen.
In another embodiment of the application, as shown in figure 1, multiple above-mentioned net blocks 41 are arranged in array, above-mentioned parting bead 42 It is arranged between the above-mentioned net block 41 arranged with adjacent two between the above-mentioned net block 41 of adjacent rows.Such oxidation net not only has The effect that preferably control ammonia is escaped, manufacture craft is simpler.
In order to further prevent the escape of ammonia, in a kind of embodiment of the application, the thickness of above-mentioned net block is in 5~15mm Between.
Silk screen in the application can be any silk screen of the prior art, and those skilled in the art can be according to actual feelings Condition selects suitable silk screen to form net block.
In a kind of embodiment of the application, the aperture of above-mentioned silk screen 410 is 2~10 mesh, the material of silk screen 410 for carbon steel or Stainless steel, constitutes silk screen skeleton, it is ensured that the intensity of silk screen, surface is coated with chelate material, can the efficient oxidation NH3, can more have Prevent the escaping of ammonia to effect.
Oxidant in the application can be any oxidant that can aoxidize ammonia of the prior art, art technology Personnel can select suitable oxidant to aoxidize ammonia according to actual conditions.
In order that obtain oxidant more ammonias can be aoxidized, in a kind of embodiment of the application, above-mentioned oxidant It is alloy chelate, the alloy chelate can be alloy chelate any in the prior art, such as can is ferrotitanium chelating Thing.
In a kind of embodiment of the application, the material of above-mentioned parting bead is carbon steel or stainless steel, and these parting beads can not only rise To the effect being connected, additionally it is possible to play stop ammonia.
But the parting bead of the application is not limited to the parting bead of above-mentioned material, those skilled in the art can select according to actual conditions Select the parting bead of any material.
In the typical implementation method of another kind of the application, as shown in Figure 2, there is provided a kind of SCR denitration device, the SCR Denitrification apparatus include Benitration reactor 3 and above-mentioned oxidation net 4.Wherein, Benitration reactor 3 is connected with flue, and above-mentioned denitration is anti- Answer device 3 to have in reaction cavity, and above-mentioned reaction cavity and be provided with catalyst bed;Oxidation net 4 is arranged in above-mentioned reaction cavity And the downstream of above-mentioned catalyst bed is arranged on, above-mentioned oxidation net 4 is used to aoxidize the ammonia in above-mentioned Benitration reactor 3 and absorption State ammonia it is oxidized after product.
Above-mentioned SCR denitration device not only includes Benitration reactor, also including being arranged on the oxidation net in catalyst downstream, nitrogen Oxide when remaining ammonia is through peroxidating net, is oxidized agent oxidation by catalyst bed and ammonia reaction generation nitrogen and water, Also, generation product be attracted on silk screen, and then to escape ammonia carried out effective control, prevent it from escaping into air In cause the secondary pollution can not only well to carry out denitration to air.
In the another embodiment of the application, the first plane is the plane perpendicular to smoke movement direction, and above-mentioned oxidation Projection of projection of the net 4 in above-mentioned first plane with above-mentioned reaction cavity in above-mentioned first plane is completely superposed, that is, aoxidize The shape of net is identical with the shape in the section of the reaction cavity at its set location, and size is essentially equal, so can So that oxidation net is only fitted with the side wall of reaction cavity, prevent that there is therebetween gap, further prevent ammonia from escaping from gap Effusion is gone so that SCR denitration device can preferably prevent the escaping of ammonia.
In a kind of embodiment of the application, in actual application process, before oxidation net is arranged on reaction cavity, oxidation The area on one surface of net is greater than the inner section of reaction cavity, after oxidation net is installed, aoxidize net the surface correspond to The parallel surface of the inner section of reaction cavity, also, silk screen in the oxidation net has elasticity, so after the installation of oxidation net, borrows Help the elasticity of silk screen so that oxidation net is close to reaction cavity inwall, prevent that there is therebetween gap, further prevent ammonia from escaping Ease.
In another embodiment of the application, as shown in Fig. 2 in a kind of embodiment of the application, above-mentioned SCR denitration device Also include multiple cowling panels 31, multiple cowling panels 31 are set in parallel in above-mentioned reaction cavity and are arranged on above-mentioned catalyst bed 32 Upstream, each above-mentioned cowling panel 31 be used for homogenize gas flowfield therethrough.
In another embodiment in the application, as shown in Fig. 2 above-mentioned SCR denitration device also includes ammonia-spraying grid 1 and cigarette Road 2, the outlet of flue 2 is connected with the arrival end of reaction cavity, and flue gas enters from flue 2, and ammonia-spraying grid 1 is arranged on flue It is interior, and be arranged between outlet and the flue entrance of flue 2, and set closer to flue entrance, ammonia-spraying grid 1 is used to spray ammonia Gas.The ammonia that flue gas sprays in flue 2 with ammonia-spraying grid 1 uniformly mixes.
In order that obtaining those skilled in the art can clearly understand the technical scheme of the application, below with reference to tool The embodiment of body illustrates the technical scheme of the application.
Embodiment 1
As shown in Fig. 2 SCR denitration device includes flue 2, ammonia-spraying grid 1, Benitration reactor 3, cowling panel 31, catalyst Bed 32 and oxidation net 4, position relationship such as Fig. 2 of all parts are above-mentioned.
Wherein, as shown in figure 1, oxidation net 4 includes the net block 41 of multiple array arrangements, and adjacent rows above-mentioned net block 41 Between be provided with parting bead 42 between the above-mentioned net block 41 of adjacent two row, each net block includes multiple silk screens 410, and the aperture of silk screen is 5 mesh, on silk screen upper surface have oxidant, and oxidant be ferrotitanium chelate, silk screen be carbon steel silk screen, parting bead be carbon steel every Bar, the gross thickness of net block is 5mm.
The ammonia that flue gas sprays in flue 2 with ammonia-spraying grid 1 is uniformly blended, and makes its even flow field by cowling panel 31 Change, when the flue gas with ammonia with certain 4~5m/s of flow velocity by by the catalyst bed 32 in Benitration reactor 3, carrying out The redox reaction of ammonia and nitrogen oxides.The ammonia of redox reaction is not participated in by catalyst bed 32 and oxidation is reached At net, it is oxidized oxidizing in net 4, and product after oxidation is attached on the surface of filament, it is to avoid ammonia escape To in air, the effective control escaped to ammonia is realized.
Embodiment 2
Difference with embodiment 1 is that the aperture of silk screen is 2 mesh, and parting bead is stainless steel parting bead, and silk screen is stainless steel wire Net, the gross thickness of net block is 15mm.
Embodiment 3
Difference with embodiment 1 is that the aperture of silk screen is 10 mesh, and parting bead is stainless steel parting bead, and silk screen is carbon steel silk screen, The gross thickness of net block is 10mm.
Embodiment 4
Difference with embodiment 1 is that the gross thickness of net block is 3mm.
Embodiment 5
Difference with embodiment 1 is that the aperture of silk screen is 20 mesh.
Comparative example
Difference with embodiment 1 is not include oxidation net in SCR denitration device.
Using the flow of ultraviolet-uisible spectrophotometer test SCR denitration device exit ammonia, specific test result It is shown in Table 1.
Table 1
The concentration (ppm) of the escaping of ammonia
Embodiment 1 0.3
Embodiment 2 0.35
Embodiment 3 0.34
Embodiment 4 0.58
Embodiment 5 0.56
Comparative example 3
From the test data in above-mentioned table 1, compared with comparative example, the denitrification apparatus of the application can be controlled well The escaping of ammonia;Compared with Example 1, the gross thickness of the net block of embodiment 4 is smaller, not between 5~15mm so that the escaping of ammonia it is dense Degree is of a relatively high;Compared with Example 1, the aperture of the silk screen of embodiment 5 is 20 mesh, not between 2~10 mesh so that the escaping of ammonia Concentration it is of a relatively high.
As can be seen from the above description, the application the above embodiments realize following technique effect:
1st, the oxidation net of the application includes oxidant of the silk screen with absorption on silk screen, is applied when by such oxidation net When in SCR denitration device, by catalyst bed and ammonia reaction generation nitrogen and water, remaining ammonia is through peroxidating for nitrogen oxides During net, be oxidized agent oxidation, also, generation product be attracted on silk screen, and then to escape ammonia carried out effective control System, prevents it from causing secondary pollution to air in escaping into air.
2nd, the SCR denitration device of the application not only includes Benitration reactor, also including being arranged on the oxidation in catalyst downstream Net, nitrogen oxides when remaining ammonia is through peroxidating net, is oxidized agent by catalyst bed and ammonia reaction generation nitrogen and water Oxidation, also, generation product be attracted on silk screen, and then to escape ammonia carried out effective control, prevent it from escaping Secondary pollution is caused to air in air can not only well carry out denitration.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair Change, equivalent, improvement etc., should be included within the protection domain of the application.

Claims (10)

1. a kind of oxidation net for preventing the escaping of ammonia, it is characterised in that the oxidation net includes:
At least one net block (41), oxygen of the net block (41) including silk screen (410) with absorption on the silk screen (410) surface Agent.
2. oxidation net according to claim 1, it is characterised in that the net block (41) includes multiple stacked silk screens (410)。
3. oxidation net according to claim 1, it is characterised in that the oxidation net includes multiple net blocks (41), institute Stating oxidation net also includes:
At least one parting bead (42), is arranged between two adjacent net blocks (41), for connecting described in adjacent two Net block (41).
4. oxidation net according to claim 3, it is characterised in that multiple net blocks (41) are arranged in array, it is described every Bar (42) is arranged between the net block (41) arranged with adjacent two between the net block (41) of adjacent rows.
5. oxidation net according to claim 1, it is characterised in that the thickness of the net block (41) is between 5~15mm.
6. oxidation net according to claim 1, it is characterised in that the aperture of the silk screen (410) is 2~10 mesh, described The material of silk screen is carbon steel or stainless steel.
7. oxidation net according to claim 1, it is characterised in that the oxidant is alloy chelate.
8. oxidation net according to claim 3, it is characterised in that the material of the parting bead (42) is carbon steel or stainless steel.
9. a kind of SCR denitration device, it is characterised in that the SCR denitration device includes:
Benitration reactor (3), is connected with flue, and the Benitration reactor (3) in reaction cavity, and the reaction cavity with setting It is equipped with catalyst bed;And
Oxidation net (4) any one of claim 1 to 8, is arranged in the reaction cavity and is arranged on the catalysis The downstream of agent bed, the oxidation net (4) is for the ammonia that aoxidizes in the Benitration reactor (3) and to adsorb the ammonia oxidized Product afterwards.
10. SCR denitration device according to claim 9, it is characterised in that the first plane is perpendicular to smoke movement direction Plane, and the oxidation net (4) projection in first plane with the reaction cavity in first plane Projection is completely superposed.
CN201611239243.6A 2016-12-28 2016-12-28 Prevent the oxidation net and SCR denitration device of the escaping of ammonia Pending CN106807211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN202569954U (en) * 2012-05-15 2012-12-05 北京中科奥水环保工程技术有限公司 Catalytic oxidation tail gas treatment device for underground garage
CN202741002U (en) * 2012-06-27 2013-02-20 刘智勇 Photocatalyst coating filtering net
CN203447984U (en) * 2013-07-23 2014-02-26 郑州康宁特环保工程技术有限公司 Honeycomb type denitration device
CN105561765A (en) * 2015-12-17 2016-05-11 北京华科仪科技股份有限公司 Pretreatment method and device for effectively absorbing escape ammonia in smoke
CN106178948A (en) * 2016-08-25 2016-12-07 国网河南省电力公司电力科学研究院 A kind of Novel SCR denitrating system based on the escaping of ammonia catalytic eliminating

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1743052A (en) * 2004-08-04 2006-03-08 通用电气公司 Process for treating ammonia-containing exhaust gases
CN101027112A (en) * 2004-09-08 2007-08-29 黑德沃特斯股份有限公司 Method and system for reducing ammonia slip after selective reduction of NOx
CN101036850A (en) * 2007-02-07 2007-09-19 南开大学 Low-temperature smoke air SCR of boiler combined adsorption / desorption catalyzing bed for preventing the escaping of ammonia
CN102084096A (en) * 2008-05-02 2011-06-01 通用汽车环球科技运作公司 Passive ammonia-selective catalytic reduction for NOx control in ineternal combustion engines
CN102740966A (en) * 2009-11-19 2012-10-17 Sk新技术株式会社 Catalyst for selective oxidation of nh3 to n2 and method for preparing the same
CN102233262A (en) * 2010-04-23 2011-11-09 杰智环境科技股份有限公司 Multi-channel chemical filter material
CN102363087A (en) * 2011-06-29 2012-02-29 大连林桥科技有限公司 Air purification filtering net
CN102500424A (en) * 2011-10-20 2012-06-20 北京科技大学 Corrugated-plate type SCR (selective catalytic reduction) denitration catalyst
CN202569954U (en) * 2012-05-15 2012-12-05 北京中科奥水环保工程技术有限公司 Catalytic oxidation tail gas treatment device for underground garage
CN202741002U (en) * 2012-06-27 2013-02-20 刘智勇 Photocatalyst coating filtering net
CN203447984U (en) * 2013-07-23 2014-02-26 郑州康宁特环保工程技术有限公司 Honeycomb type denitration device
CN105561765A (en) * 2015-12-17 2016-05-11 北京华科仪科技股份有限公司 Pretreatment method and device for effectively absorbing escape ammonia in smoke
CN106178948A (en) * 2016-08-25 2016-12-07 国网河南省电力公司电力科学研究院 A kind of Novel SCR denitrating system based on the escaping of ammonia catalytic eliminating

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