CN204637947U - A kind of boiler flue gas purification treating apparatus - Google Patents

A kind of boiler flue gas purification treating apparatus Download PDF

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Publication number
CN204637947U
CN204637947U CN201520355130.7U CN201520355130U CN204637947U CN 204637947 U CN204637947 U CN 204637947U CN 201520355130 U CN201520355130 U CN 201520355130U CN 204637947 U CN204637947 U CN 204637947U
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CN
China
Prior art keywords
flue gas
gas purification
spray
dry type
boiler flue
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Expired - Fee Related
Application number
CN201520355130.7U
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Chinese (zh)
Inventor
蔡铭坤
吴应虎
林建星
许书光
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Fujian Optical Star Energy Environment Protection Co Ltd
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Fujian Optical Star Energy Environment Protection Co Ltd
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Priority to CN201520355130.7U priority Critical patent/CN204637947U/en
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Publication of CN204637947U publication Critical patent/CN204637947U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to technical field of environment protection equipment, particularly relate to a kind of boiler flue gas purification treating apparatus, comprise the dry type denitrification apparatus be connected successively with boiler smoke discharge tube, desulfurization spray equipment, wet electrostatic demister and chimney, desulfurization spray equipment comprises more than one desulfuration spray tower, more than one hydrojet post is provided with in desulfuration spray tower, each hydrojet post is provided with some spray holes, wind deflector is provided with below each hydrojet post, desulfurization spray equipment comprises two desulfuration spray towers, the upper end of two desulfuration spray towers is connected with dry type denitrification apparatus upper end and wet electrostatic demister upper end with the second connecting pipe respectively by the first connecting pipe, the lower end of two desulfuration spray towers is connected by the 3rd connecting pipe.The utility model adopts first dry type denitration, rewetting formula dust-removing sulphur removing function, the complex technique purified further finally by high-voltage wet type electrostatic demister solves removing of multiple pollutant dust, nitrogen oxide and sulfur dioxide in fire coal boiler fume, simple and reliable process.

Description

A kind of boiler flue gas purification treating apparatus
Technical field
The utility model relates to technical field of environment protection equipment, particularly relates to a kind of boiler flue gas purification treating apparatus.
Technical background
China is that an Industrial Boiler is produced and uses big country, and according to statistics, within 2008, China is just reaching more than 50 ten thousand with Industrial Boiler, quantity is large, distribution is wide, and wherein more than 80% is coal-burning boiler, mainly concentrates on dedusting, desulfurization and denitration to the control of Pollutant in Coal Burning Boiler.Just start, numerous production enterprise lives in the discontent and indignation of residents near factory in order to reduce, mostly consciously increase corresponding gas pollution control equipment, but, due to the expansion of enterprises' production capacity, discharge amount of exhaust gas too increases a lot, original tail gas treatment device just seems awkward, add the very different of environmental protection company, inherently there are some problems in the equipment produced, enterprise's toxic emission is caused not reach discharging standards, even the waste gas treatment equipment of numerous enterprises has become ornaments, form vicious circle, thus cause factory's surrounding resident again to be harassed, even some resident has suffered from serious breathing problem owing to being in for a long time in this air.
In recent years, " haze " phenomenon takes place frequently, serious impact is caused on residents ' health and ecological environment, the concern of the public to this is also more and more higher, promote thus " ambient air quality " that national issue is newly revised, improve the dust emission standard of the industry such as fire coal, metallurgy, this has higher requirement to gas cleaning simultaneously.Progressively strict along with environmental protection system, the discharge of the waste gas not up to standard such as cement plant, steel plant is as one of air pollution origin cause of formation, and cause the extensive concern of various circles of society, environmental protection relevant departments are to the control of its Denitration in Boiler, desulfurization, dedusting also increasingly stringent.But the waste gas treatment equipment that present stage uses is of a great variety, and effect is very different, often makes the expensive fund of manufacturing enterprise but can not get good regulation effect on waste gas pollution control and treatment.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, provides that a kind of structure is simple, operating cost is low, boiler flue gas purification treating apparatus that economic environmental protection, gas cleaning are effective.
For achieving the above object, the utility model is by the following technical solutions:
A kind of boiler flue gas purification treating apparatus, it comprises the dry type denitrification apparatus, desulfurization spray equipment, wet electrostatic demister and the chimney that are connected successively with boiler smoke discharge tube, described desulfurization spray equipment comprises more than one desulfuration spray tower, more than one hydrojet post is provided with in described desulfuration spray tower, described each hydrojet post is provided with some spray holes, is provided with wind deflector below described each hydrojet post.
Described desulfurization spray equipment comprises two desulfuration spray towers, the upper end of described two desulfuration spray towers is connected with dry type denitrification apparatus upper end and wet electrostatic demister upper end with the second connecting pipe respectively by the first connecting pipe, and the lower end of described two desulfuration spray towers is connected by the 3rd connecting pipe.
Described dry type denitrification apparatus lower end is connected with boiler smoke discharge tube, the netted fixed bed of some layers is provided with in described dry type denitrification apparatus, described fixed bed is for placing denitrating catalyst, and described dry type denitrification apparatus upper end is connected with desulfurization spray equipment by the first connecting pipe.
Described denitrating catalyst is SCR denitration.
Be provided with solid dust bottom described dry type denitrification apparatus and collect mouth.
Described wet electrostatic demister upper end is connected with desulfurization spray equipment by the second connecting pipe, the water injector being with some nozzles and the high voltage electrostatic device be positioned at below water injector is provided with in described wet electrostatic demister, described high voltage electrostatic device comprises some groups of collecting plates and discharge electrode that vertically arrange, described discharge electrode is connected with the high voltage source be provided with outside wet electrostatic demister, and described wet electrostatic demister lower end is connected with chimney.
Be provided with backwater bottom described wet electrostatic demister and collect mouth.
Described spray hole is for spraying NaOH or ammoniacal liquor.
Be provided with circulation fluid bottom described desulfurization spray equipment and collect mouth.
The utility model adopts above technical scheme, first the flue gas in boiler smoke discharge tube is passed into dry type denitrification apparatus lower end, SCR denitration generation chemical reaction in the up process of flue gas on its harmful nitrogen oxide and netted fixed bed, thus produce harmless nitrogen and water, this process does not have accessory substance to form secondary pollution, apparatus structure is simple, but it is high, reliable to remove nitrogen oxide efficiency; The design of the netted fixed bed of multilayer can adjust the SCR denitration of placing respective numbers as required; The liquid-absorbant absorbing in desulfurization spray equipment and spray spray hole is entered from dry type denitrification apparatus upper end flue gas out, dust in flue gas and drop collide, the drop containing dust in flue gas is made to obtain sedimentation, sulfur dioxide simultaneously in flue gas and liquid-absorbant react, realize the absorbing and removing of sulfur dioxide, described liquid-absorbant is preferably NaOH or ammoniacal liquor, and this absorbent and acid gas in flue gas reaction generate solable matter; In addition, be arranged on the wind deflector below hydrojet post, through fluid simulation software simulation, adopt dividing of uniqueness streamed, liquid is sprayed flow to wind deflector and is thrown away by wind deflector to collide with desulfuration spray tower inwall and bottom flowing to along inwall, simultaneously wind deflector can reducing smoke downstream rate, thus improves desulfurized effect; Enter in high-voltage wet type electrostatic demister from desulfurization spray equipment flue gas out, the ion utilizing discharge electrode corona to produce by the fine particle in flue gas and acid mist charged, then move to collecting plate under electric field action, the nozzle of recycling water injector sprays into a certain amount of water to collecting plate, and form continuous liquid film, the fine particle on collecting plate and acid mist gathering are formed drop and rinses from collecting plate; Flue gas after the process of wet electrostatic demister is discharged via chimney.The utility model structure is simple, adopt first dry type denitration, rewetting formula dust-removing sulphur removing function, the complex technique purified further finally by high-voltage wet type electrostatic demister solves removing of multiple pollutant dust, nitrogen oxide and sulfur dioxide in fire coal boiler fume, greatly save gas cleaning investment and operating cost, simple and reliable process.
Accompanying drawing explanation
Now by reference to the accompanying drawings the utility model is further elaborated:
Fig. 1 is the utility model boiler flue gas purification treating apparatus structural representation.
Detailed description of the invention
As shown in Figure 1, the utility model comprises the dry type denitrification apparatus 2, desulfurization spray equipment 3, wet electrostatic demister 4 and the chimney 5 that are connected successively with boiler smoke discharge tube 1, described desulfurization spray equipment 3 comprises more than one desulfuration spray tower 31, more than one hydrojet post 311 is provided with in described desulfuration spray tower 31, described each hydrojet post 311 is provided with some spray holes 312, is provided with wind deflector 313 below described each hydrojet post 311.
Described desulfurization spray equipment 3 comprises two desulfuration spray towers 31, the upper end of described two desulfuration spray towers 31 is connected with dry type denitrification apparatus 2 upper end and wet electrostatic demister 4 upper end with the second connecting pipe 7 respectively by the first connecting pipe 6, and the lower end of described two desulfuration spray towers 31 is connected by the 3rd connecting pipe 8.
Described dry type denitrification apparatus 2 lower end is connected with boiler smoke discharge tube 1, the netted fixed bed 21 of some layers is provided with in described dry type denitrification apparatus 2, described fixed bed 21 is for placing denitrating catalyst 22, and described dry type denitrification apparatus 2 upper end is connected with desulfurization spray equipment 3 by the first connecting pipe 6.
Described denitrating catalyst 22 is SCR denitration.
Be provided with solid dust bottom described dry type denitrification apparatus 2 and collect mouth 23.
Described wet electrostatic demister 4 upper end is connected with desulfurization spray equipment 3 by the second connecting pipe 7, be provided with in described wet electrostatic demister 4 and be with the water spray of some nozzles to fill 41 to put and be positioned at the high voltage electrostatic device 42 below water injector 41, described high voltage electrostatic device 42 comprises the some groups of collecting plates vertically arranged 421 and discharge electrode 422, described discharge electrode 422 is connected with the high voltage source be provided with outside wet electrostatic demister 4, and described wet electrostatic demister 4 lower end is connected with chimney 5.
Be provided with backwater bottom described wet electrostatic demister 4 and collect mouth 43.
Described spray hole 312 is for spraying NaOH or ammoniacal liquor.
Be provided with circulation fluid bottom described desulfurization spray equipment 3 and collect mouth 32.
The utility model adopts above technical scheme, first the flue gas in boiler smoke discharge tube 1 is passed into dry type denitrification apparatus 2 lower end, SCR denitration generation chemical reaction in the up process of flue gas on its harmful nitrogen oxide and netted fixed bed 21, thus produce harmless nitrogen and water, this process does not have accessory substance to form secondary pollution, apparatus structure is simple, but it is high, reliable to remove nitrogen oxide efficiency; The design of the netted fixed bed 21 of multilayer can adjust the SCR denitration of placing respective numbers as required; The liquid-absorbant absorbing ejection spray hole 312 in desulfurization spray equipment 3 is entered from dry type denitrification apparatus 2 upper end flue gas out, dust in flue gas and drop collide, the drop containing dust in flue gas is made to obtain sedimentation, sulfur dioxide simultaneously in flue gas and liquid-absorbant react, realize the absorbing and removing of sulfur dioxide, described liquid-absorbant is preferably NaOH or ammoniacal liquor, and this absorbent and acid gas in flue gas reaction generate solable matter; In addition, be arranged on the wind deflector 313 below hydrojet post 311, through fluid simulation software simulation, adopt dividing of uniqueness streamed, liquid is sprayed flow to wind deflector 313 and is thrown away by wind deflector to collide with desulfuration spray tower 31 inwall and bottom flowing to along inwall, simultaneously wind deflector can reducing smoke downstream rate, thus improves desulfurized effect; Enter in high-voltage wet type electrostatic demister 4 from desulfurization spray equipment 3 flue gas out, the ion utilizing discharge electrode 422 corona to produce by the fine particle in flue gas and acid mist charged, then move to collecting plate 421 under electric field action, the nozzle of recycling water injector 41 sprays into a certain amount of water to collecting plate 421, and form continuous liquid film, the fine particle on collecting plate 421 and acid mist gathering are formed drop and rinses from collecting plate 421; Flue gas after wet electrostatic demister 4 processes is discharged via chimney 5.
More than describe and should not have any restriction to protection domain of the present utility model.

Claims (9)

1. a boiler flue gas purification treating apparatus, comprise the dry type denitrification apparatus, desulfurization spray equipment, wet electrostatic demister and the chimney that are connected successively with boiler smoke discharge tube, it is characterized in that: described desulfurization spray equipment comprises more than one desulfuration spray tower, more than one hydrojet post is provided with in described desulfuration spray tower, described each hydrojet post is provided with some spray holes, is provided with wind deflector below described each hydrojet post.
2. a kind of boiler flue gas purification treating apparatus according to claim 1, it is characterized in that: described desulfurization spray equipment comprises two desulfuration spray towers, the upper end of described two desulfuration spray towers is connected with dry type denitrification apparatus upper end and wet electrostatic demister upper end with the second connecting pipe respectively by the first connecting pipe, and the lower end of described two desulfuration spray towers is connected by the 3rd connecting pipe.
3. a kind of boiler flue gas purification treating apparatus according to claim 1, it is characterized in that: described dry type denitrification apparatus lower end is connected with boiler smoke discharge tube, the netted fixed bed of some layers is provided with in described dry type denitrification apparatus, described fixed bed is for placing denitrating catalyst, and described dry type denitrification apparatus upper end is connected with desulfurization spray equipment by the first connecting pipe.
4. a kind of boiler flue gas purification treating apparatus according to claim 3, is characterized in that: described denitrating catalyst is SCR denitration.
5. a kind of boiler flue gas purification treating apparatus according to claim 3, is characterized in that: be provided with solid dust bottom described dry type denitrification apparatus and collect mouth.
6. a kind of boiler flue gas purification treating apparatus according to claim 1, it is characterized in that: described wet electrostatic demister upper end is connected with desulfurization spray equipment by the second connecting pipe, the water injector being with some nozzles and the high voltage electrostatic device be positioned at below water injector is provided with in described wet electrostatic demister, described high voltage electrostatic device comprises some groups of collecting plates and discharge electrode that vertically arrange, described discharge electrode is connected with the high voltage source be provided with outside wet electrostatic demister, and described wet electrostatic demister lower end is connected with chimney.
7. a kind of boiler flue gas purification treating apparatus according to claim 6, is characterized in that: be provided with backwater bottom described wet electrostatic demister and collect mouth.
8. a kind of boiler flue gas purification treating apparatus according to claim 1, is characterized in that: described spray hole is for spraying NaOH or ammoniacal liquor.
9. a kind of boiler flue gas purification treating apparatus according to claim 1, is characterized in that: be provided with circulation fluid bottom described desulfurization spray equipment and collect mouth.
CN201520355130.7U 2015-05-28 2015-05-28 A kind of boiler flue gas purification treating apparatus Expired - Fee Related CN204637947U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106439879A (en) * 2016-07-08 2017-02-22 佛山市信利成机电设备有限公司 Industrial boiler denitration system
CN109107356A (en) * 2018-08-20 2019-01-01 彩虹集团(邵阳)特种玻璃有限公司咸阳分公司 A kind of cover-plate glass tank furnace smoke processing system
CN113041807A (en) * 2021-03-22 2021-06-29 华能(浙江)能源开发有限公司长兴分公司 Intelligent efficient flue gas purifying and dedusting device based on 5G and remote monitoring system thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106439879A (en) * 2016-07-08 2017-02-22 佛山市信利成机电设备有限公司 Industrial boiler denitration system
CN106439879B (en) * 2016-07-08 2019-05-24 佛山市信利成机电设备有限公司 A kind of Industrial Boiler denitrating system
CN109107356A (en) * 2018-08-20 2019-01-01 彩虹集团(邵阳)特种玻璃有限公司咸阳分公司 A kind of cover-plate glass tank furnace smoke processing system
CN113041807A (en) * 2021-03-22 2021-06-29 华能(浙江)能源开发有限公司长兴分公司 Intelligent efficient flue gas purifying and dedusting device based on 5G and remote monitoring system thereof

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20150916

Termination date: 20180528