CN109260920A - Smoke processing system - Google Patents
Smoke processing system Download PDFInfo
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- CN109260920A CN109260920A CN201811302775.9A CN201811302775A CN109260920A CN 109260920 A CN109260920 A CN 109260920A CN 201811302775 A CN201811302775 A CN 201811302775A CN 109260920 A CN109260920 A CN 109260920A
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- denitration
- processing system
- flue gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/02—Separation 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 by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation 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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
- B01D53/70—Organic halogen compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/46—Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
- B01D2258/0291—Flue gases from waste incineration plants
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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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- 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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
The embodiment of the invention provides a kind of smoke processing systems.Smoke processing system includes denitration process unit, denitration process unit includes reaction tower and sorbent catalyst denitration structure, sorbent catalyst denitration structure setting makes the nitride in the denitrification reducing agent and flue gas to be processed that enter in reaction tower react simultaneously denitration under sorbent catalyst denitration structured catalysis in reaction tower.The smoke processing system is good to fume treatment effect.
Description
Technical field
The present embodiments relate to technical field of environment protection equipment more particularly to a kind of smoke processing systems.
Background technique
Currently, domestic garbage disposal has been trend of the times using burning minimizing, energy mode.Waste incineration can be with
Pollution of the dumping to environment is reduced to greatest extent, while can be generated electricity and be realized energy regeneration.But during the burning process
Generated flue gas still contains sulfur dioxide (abbreviation sulphur), nitrogen oxides (abbreviation nitre), dust, dioxin etc. to environmental hazard still
So very big substance needs to be further processed incineration flue gas, carries out desulphurization denitration etc., endangers to avoid flue gas direct emission after burning
Evil environment.
In the prior art, when carrying out denitration improvement for flue gas of refuse burning, SCR (selective catalytic reduction is mainly used
Denitration) technique, it is method of denitration after a kind of furnace, mainly using reducing agent (NH3) under metallic catalyst effect, selectivity
Ground is reacted with NOx generates N2 and H2O, rather than the principle aoxidized by O2.
Existing SCR denitration system mostly uses greatly high-temperature catalytic, and reaction temperature section is 315 DEG C~400 DEG C.And existing skill
Flue gas after waste incineration in art, which reaches the temperature in SCR denitration system, will be generally less than reaction temperature many, in order to guarantee
Carrying out temperature when SCR denitration can need that SGH equipment is arranged before SCR denitration system, to cigarette in reaction temperature section
Gas carries out reheating, its temperature is enable to be increased to suitable reaction temperature.Being heated up by SGH, flue gas needs consumption is a large amount of to steam
Vapour, so that operating cost is high.And when carrying out denitration using SCR, catalyst is easy to poison deactivation, and service life is short, and is catalyzed
Agent lifetime needs to handle by dangerous waste after, so that operating cost further increases.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of smoke processing system, to solve above-mentioned all or part of ask
Topic.
According to a first aspect of the embodiments of the present invention, a kind of smoke processing system is provided comprising denitration process unit,
Denitration process unit includes reaction tower and sorbent catalyst denitration structure, sorbent catalyst denitration structure setting in reaction tower,
Make the nitride entered in denitrification reducing agent and flue gas to be processed in reaction tower under sorbent catalyst denitration structured catalysis
React simultaneously denitration.
Optionally, smoke processing system further includes pelletizer, and pelletizer is connect with reaction tower, and the powder that reaction tower is conveyed
Dirt is fabricated to fuel particle.
Optionally, smoke processing system further includes deduster, and along the flow direction of flue gas to be processed, deduster is located at de-
The front end of nitre processing unit, to be dusted processing to flue gas to be processed before denitration process unit.
Optionally, pelletizer is connect with deduster, and the dust that deduster conveys is fabricated to fuel particle；Alternatively, making
Grain machine is connect with the reaction tower of denitration process unit and deduster respectively, and the dust that reaction tower and deduster convey is fabricated to
Fuel particle.
Optionally, smoke processing system further includes pre- denitration unit, along flow of flue gas direction to be processed, pre- out of stock unit
Pre- out of stock processing is carried out positioned at the front end of deduster, and to flue gas to be processed.
Optionally, smoke processing system further includes desulfurization process unit, along flow of flue gas direction to be processed, desulfurization process
Unit is located at the front end of deduster, and carries out desulfurization process to flue gas to be processed；Alternatively, desulfurization process unit is located at denitration
The front end of unit is managed, and desulfurization process is carried out to the flue gas to be processed before entering denitration process unit.
Optionally, desulfurization process unit includes desulfurizing tower and absorbs slurries spray structure, absorbs the setting of slurries spray structure
In desulfurizing tower, and the spray-absorption slurries into desulfurizing tower, flue gas to be processed enter the absorption slurries in desulfurizing tower with spray
Contact simultaneously reaction desulfuration.
Optionally, denitration process unit further includes reducing agent delivery section, and reducing agent delivery section is connect with reaction tower, and to anti-
It answers and conveys denitrification reducing agent in tower.
Optionally, denitrification reducing agent includes NH3 gas, and reducing agent delivery section includes NH3 delivery source, air-source and mixing
Device, mixer are connect with NH3 delivery source and air-source respectively, and mix NH3 gas and air in mixer.
Optionally, heater, the gas of heater heated air source input are additionally provided between air-source and mixer.
Optionally, sorbent catalyst denitration structure includes that activated coke is catalyzed out of stock structure.
According to the second aspect of the invention, a kind of smoke processing system, including gas cleaning portion and and gas cleaning are provided
The pelletizer of portion's connection, gas cleaning portion carry out in desulfurization process, denitration process and dust removal process at least flue gas to be processed
One processing, pelletizer obtain the dust of gas cleaning portion output, and dust is generated fuel particle.
Optionally, gas cleaning portion includes: denitration process unit, and denitration process unit includes that reaction tower and setting are being reacted
Interior sorbent catalyst denitration structure, sorbent catalyst denitration structure make the denitrification reducing agent and to be processed entered in reaction tower
Nitride in flue gas reacts under sorbent catalyst denitration structured catalysis and denitration, and pelletizer is connect with reaction tower, and will be anti-
The dust for answering tower to convey is fabricated to fuel particle.
Optionally, gas cleaning portion includes deduster, and along the flow direction of flue gas to be processed, deduster is located at denitration
The front end of unit is managed, to be dusted processing to flue gas to be processed before denitration process unit, pelletizer and deduster connect
It connects, and the dust that deduster conveys is fabricated to fuel particle.
Optionally, when gas cleaning portion includes denitration process unit and deduster, pelletizer respectively with denitration process list
The reaction tower of member is connected with deduster, and the dust that reaction tower and deduster convey is fabricated to fuel particle.
Optionally, gas cleaning portion further includes pre- denitration unit, along flow of flue gas direction to be processed, pre- out of stock unit position
Pre- out of stock processing is carried out in the front end of deduster, and to flue gas to be processed.
Optionally, smoke processing system further includes desulfurization process unit, along flow of flue gas direction to be processed, desulfurization process
Unit is located at the front end of deduster, and carries out desulfurization process to flue gas to be processed.
Optionally, desulfurization process unit includes desulfurizing tower and absorbs slurries spray structure, absorbs the setting of slurries spray structure
In desulfurizing tower, and the spray-absorption slurries into desulfurizing tower, flue gas to be processed enter the absorption slurries in desulfurizing tower with spray
Contact simultaneously reaction desulfuration.
Optionally, denitration process unit further includes reducing agent delivery section, and reducing agent delivery section is connect with reaction tower, and to anti-
It answers and conveys denitrification reducing agent in tower.
Optionally, denitrification reducing agent includes NH3 gas, and reducing agent delivery section includes NH3 delivery source, air-source and mixing
Device, mixer are connect with NH3 delivery source and air-source respectively, and mix NH3 gas and air in mixer.
Optionally, heater, the gas of heater heated air source input are additionally provided between air-source and mixer.
Optionally, sorbent catalyst denitration structure includes that activated coke is catalyzed out of stock structure.
The smoke processing system provided according to embodiments of the present invention, the smoke processing system include denitration process unit, are taken off
It is provided with sorbent catalyst denitration structure in the reaction tower of nitre processing unit, is made using the catalysis of sorbent catalyst denitration structure
The harmful substances such as the nitride in flue gas to be processed are removed with, denitration and suction-operated cooperation denitrification reducing agent, are realized
Processing to flue gas to be processed.Denitration process is carried out by sorbent catalyst denitration structure, solves the gold of SCR denitration processing
Metal catalyst is easy to the problem of poison deactivation.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in inventive embodiments can also obtain according to these attached drawings for those of ordinary skill in the art
Obtain other attached drawings.
Fig. 1 is the process flow diagram according to the smoke processing system of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram according to the desulfurization process unit of the smoke processing system of the embodiment of the present invention.
Fig. 3 is the structural schematic diagram according to the denitration process unit of the smoke processing system of the embodiment of the present invention.
Description of symbols:
10, pre- denitration unit；20, desulfurization process unit；21, desulfurizing tower；22, slurries spray structure is absorbed；23, slurries are defeated
Send structure；24, demisting dedusting structure；25, slurries space；30, deduster；40, air-introduced machine；50, denitration process unit；51, main
Blower；52, air-source；53, booster fan；54, reaction tower；55, mixer；56, heater；57, air pump；60, pelletizer.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution in the embodiment of the present invention, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described reality
Applying example only is a part of the embodiment of the embodiment of the present invention, instead of all the embodiments.Based on the implementation in the embodiment of the present invention
The range of protection of the embodiment of the present invention all should belong in example, those of ordinary skill in the art's every other embodiment obtained.
Below with reference to attached drawing of the embodiment of the present invention the embodiment of the present invention will be further explained specific implementation.
As shown in Figure 1, according to an embodiment of the invention, smoke processing system includes denitration process unit 50, denitration process
Unit 50 include reaction tower 54 and sorbent catalyst denitration structure, sorbent catalyst denitration structure setting in reaction tower 54, into
It is anti-under sorbent catalyst denitration structured catalysis to enter the nitride in the denitrification reducing agent and flue gas to be processed in reaction tower 54
It should simultaneously denitration.
The smoke processing system includes denitration process unit 50, is provided with absorption in the reaction tower 54 of denitration process unit 50
Agent catalytic denitration structure, also using the catalytic action of sorbent catalyst denitration structure, denitration and suction-operated cooperation denitration
Former agent removes the harmful substances such as the nitride in flue gas to be processed, realizes the processing to flue gas to be processed.Pass through adsorbent
Catalytic denitration structure carries out denitration process, solves the problems, such as that the metallic catalyst of SCR denitration processing is easy to poison deactivation.
Optionally, in the present embodiment, sorbent catalyst denitration structure is activated coke catalytic denitration structure.Denitrification reducing agent can
To be NH3 gas and/or ammonium hydroxide etc., NH3 gas and/or ammonium hydroxide can be sprayed into absorption tower 54, be reacted.
Since the reaction temperature section of activated coke denitration is 60-150 degrees Celsius, needed compared to the processing of existing SCR denitration
The reaction temperature for wanting 300 degrees Celsius or more, the reaction temperature for carrying out denitration process using activated coke is low, without treating place when reaction
The flue gas of reason carries out reheating, so that the smoke processing system may not need setting reheating equipment (SGH equipment) to cigarette to be processed
Gas heating saves heating steam, reduces equipment cost.
In addition, activated coke itself has very strong dioxin adsorption function, therefore carrying out catalytic denitration using activated coke can
Dioxin is adsorbed so that active powdered carbon need not be sprayed into, reduces the process and cost during fume treatment.
As shown in Figure 1, in the present embodiment, which is used for fume treatment after waste incineration.Certainly, at it
In his embodiment, which can be applied in the application scenarios that other need to carry out gas treatment.
Scene is handled for incineration flue gas, the smoke processing system of the embodiment of the present invention further includes pelletizer 60, is granulated
Machine 60 is connect with reaction tower 54, and the dust that reaction tower 54 conveys is fabricated to fuel particle.Activated coke is in reaction process in this way
Clast of middle generation etc. can be fabricated to fuel particle with granulation machine 60, and burn again as fuel, make to absorb attachment thereon
Dioxin can be processed, without polluting the environment, and keep processing cost lower.
Optionally, smoke processing system further includes deduster 30, along the flow direction of flue gas to be processed, deduster 30
In the front end of denitration process unit 50, to be dusted processing to flue gas to be processed before denitration process unit 50.Dedusting
Device 30 can be used for removing the dust granule etc. in flue gas to be processed, and dust etc. is avoided to enter at denitration with flue gas to be processed
It manages in unit 50, so that dust blocks activated coke catalytic denitration structure.
When smoke processing system includes deduster 30, pelletizer 60 can be connect with deduster 30, and by deduster 30
The dust of conveying is fabricated to fuel particle.The fuel particle can be used as fuel combustion, the ash collected without deduster 30
Dirt individually carries out fly ash emission processing, both saves process, in turn avoids environmental pollution.
Alternatively, pelletizer 60 can be connect with reaction tower 54 and deduster 30 respectively, and by reaction tower 54 and deduster 30
The dust of conveying is fabricated to fuel particle.Make the dust generated in the flying dust of deduster 30 and activated coke operational process, broken in this way
Particle is made by granulating technique in bits etc., then returns waste incinerator and is burned again, and the dioxin that the inside is adsorbed is thorough
It eliminates and entire technique is made no longer to generate flying dust outlet, facilitate environmental protection.
Optionally, in the present embodiment, according to fume treatment needs, smoke processing system further include pre- denitration unit 10,
At least one of desulfurization process unit 20 and air-introduced machine 40.
For example, in the present embodiment, smoke processing system includes pre- denitration unit 10, desulfurization process unit 20, deduster
30, air-introduced machine 40 and denitration process unit 50, the flow direction along flue gas to be processed are set gradually.Place can be treated in this way
The flue gas of reason is adequately handled, it is ensured that the cleannes of the gas of discharge avoid pollution environment.
Certainly, the smoke processing system of the present embodiment only as a preferred method, in other embodiments can basis
The one or more units that needs to reduce, be omitted or substituted in smoke processing system, the present embodiment are not construed as limiting this.
Each unit of the smoke processing system of the present embodiment is described in detail below as follows:
Specifically, pre- denitration unit 10 is used to carry out flue gas to be processed pre- denitration process, and pre- denitration unit 10 can be with
Including SNCR (selective non-catalytic) denitration process unit.It is a kind of denitration in the stove processing unit, can be set in incinerator
It sets, to carry out preliminary denitration process in furnace to the flue gas after burning.For example, spraying into reducing agent into furnace in suitable temperature range
(such as ammonium hydroxide, urea liquid) is restored using the NOx in reducing agent and flue gas and is removed, be converted into the principle of nitrogen and water etc., real
Existing denitration process.
As needed, the flue gas to be processed being discharged after pre- denitration unit 10, can flow into desulfurization process unit 20
It is interior, to carry out desulfurization process to flue gas to be processed in desulfurization process unit 20, remove the sulfide in flue gas to be processed
(SOx)。
Certainly, smoke processing system can only include denitration process unit 50 and desulfurization process unit 20, along described wait locate
The flow of flue gas direction of reason, the desulfurization process unit (20) are located at the front end of the denitration process unit (50), and to entrance
The flue gas to be processed before the denitration process unit (50) carries out desulfurization process, is can solve in this way using activated coke
When carrying out denitration, if containing a large amount of SO2 in flue gas to be processed, SO2 can react with the ammonia of penetrating and generate hydrogen sulfate
The ammonium salts such as ammonia, ammonium sulfate and sulfurous acid ammonia, and since the ammonium salt of generation has very big viscosity, it will cause equipment blocking, resistance
The problem of increasing, efficiency decline, causing system to be unable to run when serious.
By the way that desulfurization process unit 20 is arranged before denitration process unit 50, bottom solves the problems, such as this, and meets
The demand of desulfurization and the denitration of flue gas to be processed.
Desulfurization process unit 20 can choose wet desulphurization (including ammonia process, limestone wet-process, magnesium processes, sodium method etc.), dry method
The different sulfur removal technology such as desulfurization, the present embodiment are not construed as limiting this.
According to the different needs, such as occupied space, the difference of equipment cost, different desulfurization process lists can be set
Member.A kind of desulfurization process unit 20 is provided in the present embodiment comprising desulfurizing tower 21 and absorption slurries spray structure 22 etc..
As shown in Fig. 2, desulfurizing tower 21 provides reaction compartment for desulfurization process.The bottom of desulfurizing tower 21 is to place to absorb slurries
Slurries space 25.It absorbs slurries spray structure 22 to be arranged in desulfurizing tower 21, and the spray-absorption slurries into desulfurizing tower 21, make
The flue gas to be processed enters the absorption slurry liquid contacts and reaction desulfuration in the desulfurizing tower (21) with spray.
Optionally, desulfurization process unit 20 further includes slurries structure for conveying 23, is connect with slurries spray structure 22 is absorbed,
And the absorption slurries in slurries space 25 are transported to and are absorbed in slurries spray structure 22, enable to absorb slurries spray structure 22
Spray-absorption slurries.
Absorbing slurries can be the slurries of lime stone or lime etc..
Absorbing slurries spray structure 22 as needed can be one or more.It is multiple when absorbing slurries spray structure 22
When, slurries structure for conveying 23 is connect with the one or more in multiple absorption slurries spray structures 22 respectively, and is inhaled to its conveying
Receive slurries.
Optionally, demisting dedusting structure 24 can also be set in desulfurizing tower 21, for the cigarette to be processed after desulfurization
Gas is dusted demisting processing, removes at least part dust and droplet.
Optionally, demisting dedusting structure 24 can be rotational flow wet-type electrostatic precipitation Defrosting structure.
Flue gas to be processed after the desulfurization process that desulfurization process unit 20 flows out, into being removed in deduster 30
Dirt.In the present embodiment, deduster 30 can be bag filter, be carried out using bag filter to flue gas to be processed
Filter, stays in dust etc. in bag filter, and gas passes through deduster 30.
Active carbon can be set in bag filter to be adsorbed, active carbon can also be not provided with and adsorbed.
According to the different needs, deduster 30 can also be with other wet types or dry collector, such as electrostatic precipitator, wet spin
Flow deduster etc..
Air-introduced machine 40 provides power for the flowing of flue gas to be processed, forces flow of flue gas.Air-introduced machine 40 can be centrifugation
Blower, axial flow blower etc..According to the different needs, air-introduced machine 40 can be set in any position appropriate, it is not necessary to be arranged
Between deduster 30 and denitration process unit 50, also it can be set before deduster 30.
The flue gas to be processed flowed out from deduster 30 enters denitration process unit 50, carries out denitration process.
As shown in figure 3, the air inlet of the reaction tower 54 of denitration process unit 50 is connected with main air blower 51 and booster fan 53,
Flue gas to be processed to be introduced in reaction tower 54.It should be noted that according to main air blower 51, booster fan 53 power not
Together, air-introduced machine 40 can be set, also can be omitted air-introduced machine 40.Such as, if the power of main air blower 51 and booster fan 53 is sufficiently large,
It then can be omitted air-introduced machine 40.
Air-source air inlet branch road is also connected between main air blower 51 and booster fan 53, for into flue gas to be processed
Supplement air.Air-source air inlet branch road is connect with air-source 52.
As shown in figure 3, in the present embodiment, when denitrification reducing agent includes NH3 gas, denitration process unit 50 further includes
Reducing agent delivery section, reducing agent delivery section are connect with reaction tower 54, and NH3 gas is conveyed into reaction tower 54, and NH3 gas is made to exist
Reacted at sorbent catalyst denitration structure in reaction tower 54 with the nitride etc. in flue gas to be processed, make its be converted into nitrogen,
Water etc..
In the present embodiment, reducing agent delivery section includes NH3 delivery source, air-source and mixer 55, and mixer 55 is used for
The NH3 gas that NH3 delivery source conveys is mixed with air as suitable ratio, then is transported in reaction tower 54, it is anti-to carry out denitration
It answers.Mixer 55 is connect with NH3 delivery source and air-source respectively, and makes the NH3 gas entered and the air of entrance in mixer
Mixing in 55.
Air pump 57 is provided between mixer 55 and air-source, for conveying air into mixer 55.
Optionally, in order to keep the temperature of NH3 gas suitable, it is ensured that the temperature of denitration reaction is suitable, air pump 57 with mix
Heater 56 is additionally provided between device 55, heater 56 is used for air heat temperature raising.And then mixing the air after heating
In device 55 with the defeated NH3 gas mixing of NH3 delivery source, it is ensured that the temperature of mixed NH3 gas.
The principle of denitration is carried out using NH3 gas and activated coke are as follows:
Due to having more macropore (diameter > 50nm), mesoporous (diameter is in 2.0~50nm) and less in activated coke
Micropore (diameter < 2nm), and hole is present in activated coke in the form of coherent, so that the structural strength of activated coke is more preferable, no
Easily broken, the service life is longer.
Activated coke has two kinds of mechanisms of action when adsorbing pollutant, one kind is physical absorption, and one kind is chemisorption.
Physisorption depends on the characteristic of the porous large specific surface area of activated coke, by the pollutant in flue gas to be processed
It is trapped in activated coke, using micropore and the sizable feature of molecular radius, contaminant molecule is limited in activated coke.Example
Such as, dioxin is adsorbed using activated coke.
What chemisorption relied on is the defective C atom of lattice, oxygen-containing functional group and the polar surfaces oxygen on activated coke surface
Compound, using the chemical feature of their institute's bands, targeted fixed-contamination object is on activated coke inner surface and then plays catalysis
Effect.
Specifically, after the NOx in flue gas to be processed is adsorbed by activated coke, with H2O, O2 of surrounding activated coke catalysis
Effect is lower to generate ADSORPTION STATE HNO2, reacts with the NH3 being passed through and generates NH4NO2.NH4NO2 unstable chemcial property, in activated coke
Catalytic action under be extremely easy in decomposition as N2, H2O, to achieve the purpose that denitration.
Utilize activated coke denitration reaction are as follows:
2NO+2NH3+O2→2N2+3H2O
Non-SCR (directly reacts) with the reducing substances generated when being detached from
NO+C…Red→N2C-Red: for the reducing substances of activated carbon surface
The denitration efficiency of catalytic denitration is carried out up to 90% using activated coke, such denitration process unit 50 and pre- denitration list
Member 10 may insure the denitrification rate close to 100%, it is ensured that denitration effect.
In conclusion the smoke processing system, is adapted to complicated gas denitration, catalytic denitration is carried out using activated coke,
Activated coke sensibility is small, high mechanical strength, Ke Yiyou simple suitable for catalyst carrier, stable chemical performance, regeneration condition
Effect adsorbs the harmful substance in flue gas to be processed.
Solve that activated carbon structure micropore is more, huge micropore is substantially directly penetrated through with surface, and existing it is mechanical
The problem of intensity is low, is easily broken, and then avoid broken active carbon powder and be easy to blocking hole, cause the reality of hole
The low problem of utilization rate.Since active carbon is not used, when can also be to avoid regenerating active carbon, it be serious to be crushed situation, the proportion of goods damageds
Very high problem.
In addition, the denitration temperature of the smoke processing system is low, 80-110 degrees Celsius is optimal reaction temperature section, energy consumption
It is low, it does not need to carry out steam heating in operational process, will generally be reached by solving low temperature SCR denitration running temperature by 200 degrees Celsius,
Cause the problem that energy consumption is big.
On process route, which is mounted on after desulfurization process unit 20, only carries out denitration, activity
Coke loss very little.
Flue-gas temperature is higher after activated coke denitration, and outlet is without white cigarette.
Activated coke itself has dedusting and removing dioxin effect, has further purification to make clean flue gas to be processed
With no setting is required active carbon spraying system, more saving cost.
Activated coke is non-dangerous article, such as last to lose catalysis, can be used as fuel combustion, so that operating cost is low, day
Normal denitration is the consumption of ammonia, and denitrification process is generated without any byproduct, not water consumption.
It is granulated using pelletizer, so that whole set process does not generate secondary pollution without flying dust outlet.
Flying dust granulation is carried out using pelletizer, the flue gas flying dust and activated coke that bag filter is collected are in operation process
It is delivered to pelletizer after the dust collection of middle generation, fine dust is become into graininess.Granular substance enters back into incinerator
The dioxin that burning removal wherein contains, makes it not have toxicity.Meanwhile granulation can prevent from becoming again in its combustion process
Flying dust enters flue gas system and forms endless loop.Flying dust, which is granulated after the burnable granule generated fires again, enters clinker, can be used as and builds
Material comprehensive utilization.
The solid particle powder for including in the flue gas generated after waste incineration is effectively removed using the smoke processing system
Dirt, nitride (NOx), sulfide (SOx) and dioxin etc., due to being utilized at activated coke catalytic denitration after bag filter
Reason, reaction temperature is lower, so that the flue-gas temperature of bag filter discharge is just met for activated coke denitrating technique needs, therefore
It may not need using flue gas reheat equipment (SGH), save equipment cost.
According to another aspect of the present invention, a kind of smoke processing system is provided comprising gas cleaning portion and with the cigarette
The pelletizer (60) of gas purification portion connection, the gas cleaning portion to flue gas to be processed carry out desulfurization process, denitration process and
At least one in dust removal process is handled, and the pelletizer (60) obtains the dust of the gas cleaning portion output, and by the powder
Dirt generates fuel particle.
The smoke processing system includes gas cleaning portion and pelletizer 60, gas cleaning portion can to flue gas to be processed into
Row purified treatment guarantees to meet emissions requirements, avoids or reduces the influence to environment.And utilize pelletizer 60 can be by cigarette
Gas purification portion is collected during fume treatment and/or the flying dust, the dust that generate etc. are fabricated to fuel particle, these fuel particles
It can be used as fuel to carry out repeating burning, waste can be handled with ashes after burning, be avoided at fly ash emission in this way
Reason process, reduces treatment process, reduces fume treatment cost.
Optionally, in the present embodiment, which further includes denitration process unit 50, denitration process unit 50
Including reaction tower 54 and sorbent catalyst denitration structure, sorbent catalyst denitration structure setting is in reaction tower 54, into reaction
The nitride in denitrification reducing agent and flue gas to be processed in tower 54 is reacted and is taken off under sorbent catalyst denitration structured catalysis
Nitre.
The denitration process unit 50 is used to carry out denitration process to flue gas, with nitride (NOx) present in removing smoke,
It avoids it from polluting environment, is removed using the catalytic action of sorbent catalyst denitration structure, denitration and suction-operated to be processed
Flue gas in the harmful substances such as nitride, realize the processing to flue gas to be processed.By sorbent catalyst denitration structure into
Row denitration process solves the problems, such as that the metallic catalyst of SCR denitration processing is easy to poison deactivation.
In the present embodiment, sorbent catalyst denitration structure is activated coke catalytic denitration structure.Denitrification reducing agent can be
NH3 gas and/or ammonium hydroxide etc., NH3 gas and/or ammonium hydroxide can spray into absorption tower 54, be reacted.
Since the reaction temperature section of activated coke denitration is 60-150 degrees Celsius, needed compared to the processing of existing SCR denitration
The reaction temperature for wanting 300 degrees Celsius or more, the reaction temperature for carrying out denitration process using activated coke is low, without treating place when reaction
The flue gas of reason carries out reheating, so that the smoke processing system may not need setting reheating equipment (SGH equipment) to cigarette to be processed
Gas heating saves heating steam, reduces equipment cost.
In addition, activated coke itself has very strong dioxin adsorption function, therefore carrying out catalytic denitration using activated coke can
Dioxin is adsorbed so that active powdered carbon need not be sprayed into, reduces the process and cost during fume treatment.
As shown in Figure 1, in the present embodiment, which is used for fume treatment after waste incineration.Certainly, at it
In his embodiment, which can be applied in the application scenarios that other need to carry out gas treatment.
Scene is handled for incineration flue gas, the pelletizer 60 of the embodiment of the present invention is connect with reaction tower 54, and will reaction
The dust that tower 54 conveys is fabricated to fuel particle.The clast etc. that activated coke generates during the reaction in this way can be with granulation machine 60
It is fabricated to fuel particle, and is burnt again as fuel, keeps the dioxin for absorbing attachment thereon processed, without polluting
Environment, and keep processing cost lower.
Optionally, smoke processing system further includes deduster 30, along the flow direction of flue gas to be processed, deduster 30
In the front end of denitration process unit 50, to be dusted processing to flue gas to be processed before denitration process unit 50.Dedusting
Device 30 can be used for removing the dust granule etc. in flue gas to be processed, and dust etc. is avoided to enter at denitration with flue gas to be processed
It manages in unit 50, so that dust blocks activated coke catalytic denitration structure.
When smoke processing system includes deduster 30, pelletizer 60 can be connect with deduster 30, and by deduster 30
The dust of conveying is fabricated to fuel particle.The fuel particle can be used as fuel combustion, the ash collected without deduster 30
Dirt individually carries out fly ash emission processing, both saves process, in turn avoids environmental pollution.
Alternatively, pelletizer 60 can be connect with reaction tower 54 and deduster 30 respectively, and by reaction tower 54 and deduster 30
The dust of conveying is fabricated to fuel particle.Make the dust generated in the flying dust of deduster 30 and activated coke operational process, broken in this way
Particle is made by granulating technique in bits etc., then returns waste incinerator and is burned again, and the dioxin that the inside is adsorbed is thorough
It eliminates and entire technique is made no longer to generate flying dust outlet, facilitate environmental protection.
Optionally, in the present embodiment, according to fume treatment needs, smoke processing system further include pre- denitration unit 10,
At least one of desulfurization process unit 20 and air-introduced machine 40.
For example, in the present embodiment, smoke processing system includes pre- denitration unit 10, desulfurization process unit 20, deduster
30, air-introduced machine 40 and denitration process unit 50, the flow direction along flue gas to be processed are set gradually.Place can be treated in this way
The flue gas of reason is adequately handled, it is ensured that the cleannes of the gas of discharge avoid pollution environment.
Certainly, the smoke processing system of the present embodiment only as a preferred method, in other embodiments can basis
The one or more units that needs to reduce, be omitted or substituted in smoke processing system, the present embodiment are not construed as limiting this.
Each unit of the smoke processing system of the present embodiment is described in detail below as follows:
Specifically, pre- denitration unit 10 is used to carry out flue gas to be processed pre- denitration process, and pre- denitration unit 10 can be with
Including SNCR (selective non-catalytic) denitration process unit.It is a kind of denitration in the stove processing unit, can be set in incinerator
It sets, to carry out preliminary denitration process in furnace to the flue gas after burning.For example, spraying into reducing agent into furnace in suitable temperature range
(such as ammonium hydroxide, urea liquid) is restored using the NOx in reducing agent and flue gas and is removed, be converted into the principle of nitrogen and water etc., real
Existing denitration process.
As needed, the flue gas to be processed being discharged after pre- denitration unit 10, can flow into desulfurization process unit 20
It is interior, to carry out desulfurization process to flue gas to be processed in desulfurization process unit 20, remove the sulfide in flue gas to be processed
(SOx)。
Certainly, smoke processing system can only include denitration process unit 50 and desulfurization process unit 20, along to be processed
Flow of flue gas direction, desulfurization process unit 20 are located at the front end of denitration process unit 50, and to enter denitration process unit 50 it
Preceding flue gas to be processed carries out desulfurization process, when can solve in this way using activated coke progress denitration, if flue gas to be processed
In contain a large amount of SO2, then SO2 can react with the ammonia of penetrating and generate the ammonium salts such as hydrogen sulfate ammonia, ammonium sulfate and sulfurous acid ammonia,
And due to the ammonium salt of generation have very big viscosity, will cause equipment blocking, resistance increase, efficiency decline, cause when serious be
The problem of system is unable to run.
By the way that desulfurization process unit 20 is arranged before denitration process unit 50, bottom solves the problems, such as this, and meets
The demand of desulfurization and the denitration of flue gas to be processed.
Desulfurization process unit 20 can choose wet desulphurization (including ammonia process, limestone wet-process, magnesium processes, sodium method etc.), dry method
The different sulfur removal technology such as desulfurization, the present embodiment are not construed as limiting this.
According to the different needs, such as occupied space, the difference of equipment cost, different desulfurization process lists can be set
Member.A kind of desulfurization process unit 20 is provided in the present embodiment comprising desulfurizing tower 21 and absorption slurries spray structure 22 etc..
As shown in Fig. 2, desulfurizing tower 21 provides reaction compartment for desulfurization process.The bottom of desulfurizing tower 21 is to place to absorb slurries
Slurries space 25.It absorbs slurries spray structure 22 to be arranged in desulfurizing tower 21, and the spray-absorption slurries into desulfurizing tower 21, make
The flue gas to be processed enters the absorption slurry liquid contacts and reaction desulfuration in the desulfurizing tower (21) with spray.
Optionally, desulfurization process unit 20 further includes slurries structure for conveying 23, is connect with slurries spray structure 22 is absorbed,
And the absorption slurries in slurries space 25 are transported to and are absorbed in slurries spray structure 22, enable to absorb slurries spray structure 22
Spray-absorption slurries.
Absorbing slurries can be the slurries of lime stone or lime etc..
Absorbing slurries spray structure 22 as needed can be one or more.It is multiple when absorbing slurries spray structure 22
When, slurries structure for conveying 23 is connect with the one or more in multiple absorption slurries spray structures 22 respectively, and is inhaled to its conveying
Receive slurries.
Optionally, demisting dedusting structure 24 can also be set in desulfurizing tower 21, for the cigarette to be processed after desulfurization
Gas is dusted demisting processing, removes at least part dust and droplet.
Optionally, demisting dedusting structure 24 can be rotational flow wet-type electrostatic precipitation Defrosting structure.
Flue gas to be processed after the desulfurization process that desulfurization process unit 20 flows out, into being removed in deduster 30
Dirt.In the present embodiment, deduster 30 can be bag filter, be carried out using bag filter to flue gas to be processed
Filter, stays in dust etc. in bag filter, and gas passes through deduster 30.
Active carbon can be set in bag filter to be adsorbed, active carbon can also be not provided with and adsorbed.
According to the different needs, deduster 30 can also be with other wet types or dry collector, such as electrostatic precipitator, wet spin
Flow deduster etc..
Air-introduced machine 40 provides power for the flowing of flue gas to be processed, forces flow of flue gas.Air-introduced machine 40 can be centrifugation
Blower, axial flow blower etc..According to the different needs, air-introduced machine 40 can be set in any position appropriate, it is not necessary to be arranged
Between deduster 30 and denitration process unit 50, also it can be set before deduster 30.
The flue gas to be processed flowed out from deduster 30 enters denitration process unit 50, carries out denitration process.
As shown in figure 3, the air inlet of the reaction tower 54 of denitration process unit 50 is connected with main air blower 51 and booster fan 53,
Flue gas to be processed to be introduced in reaction tower 54.It should be noted that according to main air blower 51, booster fan 53 power not
Together, air-introduced machine 40 can be set, also can be omitted air-introduced machine 40.Such as, if the power of main air blower 51 and booster fan 53 is sufficiently large,
It then can be omitted air-introduced machine 40.
Air-source air inlet branch road is also connected between main air blower 51 and booster fan 53, for into flue gas to be processed
Supplement air.Air-source air inlet branch road is connect with air-source 52.
As shown in figure 3, in the present embodiment, when denitrification reducing agent includes NH3 gas, denitration process unit 50 further includes
Reducing agent delivery section, reducing agent delivery section are connect with reaction tower 54, and NH3 gas is conveyed into reaction tower 54, and NH3 gas is made to exist
Reacted at sorbent catalyst denitration structure in reaction tower 54 with the nitride etc. in flue gas to be processed, make its be converted into nitrogen,
Water etc..
In the present embodiment, reducing agent delivery section includes NH3 delivery source, air-source and mixer 55, and mixer 55 is used for
The NH3 that NH3 delivery source conveys is mixed with air as suitable ratio, then is transported in reaction tower 54, denitration reaction is carried out.It is mixed
Clutch 55 is connect with NH3 delivery source and air-source respectively, and mixes the NH3 gas entered and the air of entrance in mixer 55
It closes.
Air pump 57 is provided between mixer 55 and air-source, for conveying air into mixer 55.
Optionally, in order to keep the temperature of NH3 gas suitable, it is ensured that the temperature of denitration reaction is suitable, air pump 57 with mix
Heater 56 is additionally provided between device 55, heater 56 is used for air heat temperature raising.And then mixing the air after heating
In device 55 with the defeated NH3 gas mixing of reducing agent delivery source, it is ensured that the temperature of mixed NH3 gas.
The principle of denitration is carried out using NH3 gas and activated coke are as follows:
Due to having more macropore (diameter > 50nm), mesoporous (diameter is in 2.0~50nm) and less in activated coke
Micropore (diameter < 2nm), and hole is present in activated coke in the form of coherent, so that the structural strength of activated coke is more preferable, no
Easily broken, the service life is longer.
Activated coke has two kinds of mechanisms of action when adsorbing pollutant, one kind is physical absorption, and one kind is chemisorption.
Physisorption depends on the characteristic of the porous large specific surface area of activated coke, by the pollutant in flue gas to be processed
It is trapped in activated coke, using micropore and the sizable feature of molecular radius, contaminant molecule is limited in activated coke.Example
Such as, dioxin is adsorbed using activated coke.
What chemisorption relied on is the defective C atom of lattice, oxygen-containing functional group and the polar surfaces oxygen on activated coke surface
Compound, using the chemical feature of their institute's bands, targeted fixed-contamination object is on activated coke inner surface and then plays catalysis
Effect.
Specifically, after the NOx in flue gas to be processed is adsorbed by activated coke, with H2O, O2 of surrounding activated coke catalysis
Effect is lower to generate ADSORPTION STATE HNO2, reacts with the NH3 being passed through and generates NH4NO2.NH4NO2 unstable chemcial property, in activated coke
Catalytic action under be extremely easy in decomposition as N2, H2O, to achieve the purpose that denitration.
Utilize activated coke denitration reaction are as follows:
2NO+2NH3+O2→2N2+3H2O
Non-SCR (directly reacts) with the reducing substances generated when being detached from
NO+C ... Red → N2 C-Red: for the reducing substances of activated carbon surface
The denitration efficiency of catalytic denitration is carried out up to 90% using activated coke, such denitration process unit 50 and pre- denitration list
Member 10 may insure the denitrification rate close to 100%, it is ensured that denitration effect.
In conclusion the smoke processing system, is adapted to complicated gas denitration, catalytic denitration is carried out using activated coke,
Activated coke sensibility is small, high mechanical strength, Ke Yiyou simple suitable for catalyst carrier, stable chemical performance, regeneration condition
Effect adsorbs the harmful substance in flue gas to be processed.
Solve that activated carbon structure micropore is more, huge micropore is substantially directly penetrated through with surface, and existing it is mechanical
The problem of intensity is low, is easily broken, and then avoid broken active carbon powder and be easy to blocking hole, cause the reality of hole
The low problem of utilization rate.Since active carbon is not used, when can also be to avoid regenerating active carbon, it be serious to be crushed situation, the proportion of goods damageds
Very high problem.
In addition, the denitration temperature of the smoke processing system is low, 80-110 degrees Celsius is optimal reaction temperature section, energy consumption
It is low, it does not need to carry out steam heating in operational process, will generally be reached by solving low temperature SCR denitration running temperature by 200 degrees Celsius,
Cause the problem that energy consumption is big.
On process route, which is mounted on after desulfurization process unit 20, only carries out denitration, activity
Coke loss very little.
Flue-gas temperature is higher after activated coke denitration, and outlet is without white cigarette.
Activated coke itself has dedusting and removing dioxin effect, has further purification to make clean flue gas to be processed
With no setting is required active carbon spraying system, more saving cost.
Activated coke is non-dangerous article, such as last to lose catalysis, can be used as fuel combustion, so that operating cost is low, day
Normal denitration is the consumption of ammonia, and denitrification process is generated without any byproduct, not water consumption.
It is granulated using pelletizer, so that whole set process does not generate secondary pollution without flying dust outlet.
Flying dust granulation is carried out using pelletizer, the flue gas flying dust and activated coke that bag filter is collected are in operation process
It is delivered to pelletizer after the dust collection of middle generation, fine dust is become into graininess.Granular substance enters back into incinerator
The dioxin that burning removal wherein contains, makes it not have toxicity.Meanwhile granulation can prevent from becoming again in its combustion process
Flying dust enters flue gas system and forms endless loop.Flying dust, which is granulated after the burnable granule generated fires again, enters clinker, can be used as and builds
Material comprehensive utilization.
The solid particle powder for including in the flue gas generated after waste incineration is effectively removed using the smoke processing system
Dirt, nitride (NOx), sulfide (SOx) and dioxin etc., due to being utilized at activated coke catalytic denitration after bag filter
Reason, reaction temperature is lower, so that the flue-gas temperature of bag filter discharge is just met for activated coke denitrating technique needs, therefore
It may not need using flue gas reheat equipment (SGH), save equipment cost.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and method and step can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The range of the embodiment of the present invention.
Embodiment that the above embodiments are only used to illustrate the present invention, and the limitation not to the embodiment of the present invention, related skill
The those of ordinary skill in art field can also make various in the case where not departing from the spirit and scope of the embodiment of the present invention
Variation and modification, therefore all equivalent technical solutions also belong to the scope of the embodiment of the present invention, the patent of the embodiment of the present invention
Protection scope should be defined by the claims.
Claims (22)
1. a kind of smoke processing system, which is characterized in that including denitration process unit (50), denitration process unit (50) packet
Reaction tower (54) and sorbent catalyst denitration structure are included, the sorbent catalyst denitration structure setting is in the reaction tower (54)
It is interior, make the nitride entered in denitrification reducing agent and flue gas to be processed in the reaction tower (54) in the sorbent catalyst
Reaction and denitration under denitration structured catalysis.
2. smoke processing system according to claim 1, which is characterized in that the smoke processing system further includes pelletizer
(60), the pelletizer (60) connect with the reaction tower (54), and the dust that the reaction tower (54) convey is fabricated to combustion
Expect particle.
3. smoke processing system according to claim 1 or 2, which is characterized in that the smoke processing system further includes removing
Dirt device (30), along the flow direction of the flue gas to be processed, the deduster (30) is located at the denitration process unit (50)
Front end, to be dusted processing to the flue gas to be processed before the denitration process unit (50).
4. smoke processing system according to claim 3, which is characterized in that pelletizer (60) and the deduster (30) are even
It connects, and the dust that the deduster (30) convey is fabricated to fuel particle；Alternatively, the pelletizer (60) takes off with described respectively
The reaction tower (54) and the deduster (30) of nitre processing unit (50) connect, and by the reaction tower (54) and the deduster
(30) dust conveyed is fabricated to fuel particle.
5. smoke processing system according to claim 3, which is characterized in that the smoke processing system further includes pre- denitration
Unit (10), along the flow of flue gas direction to be processed, the pre- out of stock unit (10) is located at the front end of the deduster, and
Pre- out of stock processing is carried out to the flue gas to be processed.
6. smoke processing system according to claim 1 or 3, which is characterized in that the smoke processing system further includes taking off
Sulphuring treatment unit (20), along the flow of flue gas direction to be processed, the desulfurization process unit (20) is located at the deduster
(30) front end, and desulfurization process is carried out to the flue gas to be processed；Alternatively, the desulfurization process unit (20) is positioned at described
The front end of denitration process unit (50), and the flue gas to be processed before entering the denitration process unit (50) is carried out
Desulfurization process.
7. smoke processing system according to claim 6, which is characterized in that the desulfurization process unit (20) includes desulfurization
Tower (21) and absorption slurries spray structure (22), absorption slurries spray structure (22) setting is interior in the desulfurizing tower (21),
And to the interior spray-absorption slurries of the desulfurizing tower (21), the flue gas to be processed enter in the desulfurizing tower (21) with spray
The absorption slurry liquid contacts and reaction desulfuration.
8. smoke processing system according to claim 1 or 2, which is characterized in that the denitration process unit (50) is also wrapped
Reducing agent delivery section is included, the reducing agent delivery section is connect with the reaction tower (54), and the conveying into the reaction tower (54)
The denitrification reducing agent.
9. smoke processing system according to claim 8, which is characterized in that denitrification reducing agent includes NH3 gas, described to go back
Former agent delivery section includes NH3 delivery source, air-source and mixer (55), the mixer (55) respectively with the NH3 delivery source
It is connected with the air-source, and makes the mixing in the mixer (55) of NH3 gas and air.
10. smoke processing system according to claim 9, which is characterized in that the air-source and the mixer (55)
Between be additionally provided with heater, the heater heats the gas of the air-source input.
11. smoke processing system according to claim 1 to 10, which is characterized in that the sorbent catalyst is de-
Nitre structure includes that activated coke is catalyzed out of stock structure.
12. a kind of smoke processing system, which is characterized in that including gas cleaning portion and the granulation being connect with the gas cleaning portion
Machine (60), the gas cleaning portion carry out at least one in desulfurization process, denitration process and dust removal process to flue gas to be processed
Processing, the pelletizer (60) obtain the dust of the gas cleaning portion output, and the dust is generated fuel particle.
13. smoke processing system according to claim 12, which is characterized in that the gas cleaning portion includes:
Denitration process unit (50), the denitration process unit (50) include reaction tower (54) and setting in the reaction (54)
Sorbent catalyst denitration structure, the sorbent catalyst denitration structure make enter the reaction tower (54) in denitrification reducing agent
Simultaneously denitration, the pelletizer are reacted under the sorbent catalyst denitration structured catalysis with the nitride in flue gas to be processed
(60) it is connect with the reaction tower (60), and the dust that the reaction tower (54) convey is fabricated to fuel particle.
14. smoke processing system according to claim 12 or 13, which is characterized in that the gas cleaning portion includes dedusting
Device (30), along the flow direction of the flue gas to be processed, the deduster (30) is located at the denitration process unit (50)
Front end, to be dusted processing, the pelletizer to the flue gas to be processed before the denitration process unit (50)
(60) it is connect with the deduster (30), and the dust that the deduster (30) convey is fabricated to fuel particle.
15. smoke processing system according to claim 14, which is characterized in that when the gas cleaning portion includes described de-
When nitre processing unit (50) and the deduster (30), the pelletizer (60) is anti-with the denitration process unit (50) respectively
It answers tower (54) and the deduster (30) to connect, and the dust that the reaction tower (54) and the deduster (30) convey is manufactured
For fuel particle.
16. smoke processing system according to claim 14, which is characterized in that the gas cleaning portion further includes pre- denitration
Unit (10), along the flow of flue gas direction to be processed, before the pre- out of stock unit (10) is located at the deduster (30)
End, and pre- out of stock processing is carried out to the flue gas to be processed.
17. smoke processing system according to claim 14, which is characterized in that the smoke processing system further includes desulfurization
Processing unit (20), along the flow of flue gas direction to be processed, the desulfurization process unit (20) is located at the deduster
(30) front end, and desulfurization process is carried out to the flue gas to be processed.
18. smoke processing system according to claim 17, which is characterized in that the desulfurization process unit (20) includes de-
Sulphur tower (21) and absorption slurries spray structure (22), the absorption slurries spray structure (22) are arranged in the desulfurizing tower (21)
It is interior, and to the interior spray-absorption slurries of the desulfurizing tower (21), the flue gas to be processed enters in the desulfurizing tower (21) and spray
The absorption slurry liquid contacts and reaction desulfuration of leaching.
19. smoke processing system according to claim 14, which is characterized in that the denitration process unit (50) further includes
Reducing agent delivery section, the reducing agent delivery section are connect with the reaction tower (54), and institute is conveyed into the reaction tower (54)
State denitrification reducing agent.
20. smoke processing system according to claim 19, which is characterized in that the denitrification reducing agent includes NH3 gas,
The reducing agent delivery section includes NH3 delivery source, air-source and mixer (55), the mixer (55) respectively with the NH3
Delivery source is connected with the air-source, and makes the mixing in the mixer (55) of NH3 gas and air.
21. smoke processing system according to claim 20, which is characterized in that the air-source and the mixer (55)
Between be additionally provided with heater, the heater heats the gas of the air-source input.
22. smoke processing system described in any one of 4-21 according to claim 1, which is characterized in that the sorbent catalyst
Denitration structure includes that activated coke is catalyzed out of stock structure.
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| CN201811302775.9A CN109260920A (en) | 2018-11-02 | 2018-11-02 | Smoke processing system |
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