CN106994287A - A kind of system and method for coal fired power plant flue gas dry desulfurizing denitration - Google Patents

A kind of system and method for coal fired power plant flue gas dry desulfurizing denitration Download PDF

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Publication number
CN106994287A
CN106994287A CN201710329941.3A CN201710329941A CN106994287A CN 106994287 A CN106994287 A CN 106994287A CN 201710329941 A CN201710329941 A CN 201710329941A CN 106994287 A CN106994287 A CN 106994287A
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China
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flue gas
activated coke
desulfurizing tower
tower
regenerator
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CN201710329941.3A
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Inventor
吴春华
邢德山
孟春强
刘建民
李永生
薛建明
胡宇峰
柏源
柴晓琴
蔡彦吟
程文煜
左程
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Guodian Science and Technology Research Institute Co Ltd
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Guodian Science and Technology Research Institute Co Ltd
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Priority to CN201710329941.3A priority Critical patent/CN106994287A/en
Publication of CN106994287A publication Critical patent/CN106994287A/en
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    • 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
    • B01D53/02Separation 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
    • 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
    • B01D53/60Simultaneously removing sulfur oxides and nitrogen oxides
    • 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
    • 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
    • B01D53/8637Simultaneously removing sulfur oxides and nitrogen oxides
    • 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
    • B01D53/88Handling or mounting catalysts
    • 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
    • B01D2251/20Reductants
    • B01D2251/206Ammonium compounds
    • B01D2251/2062Ammonia
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/30Sulfur compounds
    • B01D2257/302Sulfur oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases

Abstract

The invention discloses a kind of system and method for coal fired power plant flue gas dry desulfurizing denitration, system includes desulfurization adsorption system, denitration also original system, active coke regeneration system, activated coke induction system, flue gas system and ammonia hybrid system;Desulfurization adsorption system is the desulfurizing tower filled with activated coke, denitration also original system is the denitrating tower filled with carbon base catalyst, active coke regeneration system is activated coke regenerator, activated coke induction system includes activated coke after absorption being delivered to the first induction system of regenerator from desulfurizing tower and activated coke that regenerator is lived again is delivered to the second induction system of desulfurizing tower from regenerator, flue gas system includes the flue gas blower fan that flue gas is delivered to desulfurizing tower smoke inlet, and ammonia hybrid system includes being used to mixing ammonia into the first ammonia hybrid system and the second ammonia hybrid system into flue gas.System and method of the present invention can realize the desulphurization denitration of flue gas, and desulfurization and denitration are separately carried out, and denitration after first desulfurization, it is ensured that collaboration high-efficiency desulfurization and denitration.

Description

A kind of system and method for coal fired power plant flue gas dry desulfurizing denitration
Technical field
The invention belongs to environmental technology field, it is related to the purified treatment of coal fired power plant flue gas, and in particular to one kind is used to fire The system and method for coal generating plant flue gas dry desulfurization denitration.
Background technology
Activated coke (or activated carbon) is by having formed by the techniques such as coal blending, shaping, charing, activation by raw material of coal There is the particulate matter of adsoption catalysis function.Carbon base catalyst is that based on activated coke, active component is added by early stage coal blending, is adjusted Become pore passage structure and modified surface functional group, being formed has high catalytic activity, high selectivity, the new catalyst of high intensity.
Active coke desulphurizing technological principle is based on SO2SO in characterization of adsorption on activated coke surface, flue gas2At 110-150 DEG C At a temperature of, occur chemical reaction generation sulfuric acid absorption in activated coke hole with the oxygen in flue gas, vapor, reaction equation is such as Under:
SO2+1/2O2+H2O=H2SO4+178.4KJ/mol
SO3+H2O→H2SO4+79.5kJ
Carbon base catalyst denitrating technique principle is to utilize its catalysis characteristics, and a small amount of NH is configured in flue gas3, promote NO Selective catalytic reduction reaction generates harmless N2Directly discharge, carbon base catalyst only plays a part of catalyst, without regeneration Its catalysis can be played, reaction equation is as follows:
NO+NH3+1/4H2O=N2+3/2H2O-407.9KJ/mol
NO2+2NH3+1/2O2=3/2N2+3H2O-699.594KJ/mol
Gas-solid catalyst reactor can use fluid bed, fixed bed and moving bed.Moving bed be divided into again cross-flow bed and following current, Adverse current bed.Fluid bed is to the abrasion of activated coke/carbon base catalyst than larger.The small and fluid of solid abrasion in fixed bed reactors Flowing is close to laminar flow, and reaction speed is fast, but it is poor to conduct heat, it is impossible to constantly regenerating continuous operation.
Simultaneously containing SO in coal fired power plant flue gas2、SO3、NO、NO2, how using set of system and method simultaneously by SO2、SO3、 NO、NO2Efficient removal, so as to meet the problem of flue gas minimum discharge environmental requirement is primarily solved as each power plant's environmental transformation.
The content of the invention
To realize high efficiency desulphurization denitration, the environmental requirement of power plant's minimum discharge is met, the first object of the present invention is A kind of system for coal fired power plant flue gas dry desulfurizing denitration is provided, the second purpose is to provide one kind using the system to cigarette The method that gas carries out dry desulfurization denitration, realizes efficient, the disposable removing of sulfureous in flue gas and nitre.
Above-mentioned purpose is achieved by the following technical solution:
A kind of system for coal fired power plant flue gas dry desulfurizing denitration, including desulfurization adsorption system, denitration also original system, Active coke regeneration system, activated coke induction system, flue gas system and ammonia hybrid system;
The desulfurization adsorption system is the desulfurizing tower filled with activated coke, and top is activated coke entrance, and bottom is activated coke Outlet, bottom is provided with smoke inlet, and top is provided with exhanst gas outlet;
The denitration also original system is the denitrating tower filled with carbon base catalyst, and right side is smoke inlet, and left side is flue gas Outlet;
The active coke regeneration system is activated coke regenerator;
The activated coke induction system includes the first delivery system that activated coke after absorption is delivered to regenerator from desulfurizing tower System and the activated coke that regenerator is lived again are delivered to the second induction system of desulfurizing tower from regenerator, and the first induction system is communicated in The activated coke outlet of desulfurizing tower and regenerator top entry, the second induction system are communicated in regenerator outlet at bottom and desulfurizing tower Activated coke entrance, the first induction system, the second induction system include conveyer and conveyance conduit respectively;
The flue gas system includes the flue gas blower fan that flue gas is delivered to desulfurizing tower smoke inlet, and desulfurizing tower and denitration The flue after flue, denitrating tower exhanst gas outlet between tower;
The ammonia hybrid system includes being used to mixing ammonia into the first ammonia hybrid system and the second ammonia mixing into flue gas System, the first ammonia hybrid system is located between flue gas blower fan and desulfurizing tower smoke inlet, and the second ammonia hybrid system is located at desulfurizing tower Between exhanst gas outlet and denitrating tower smoke inlet.
Denitrification process is necessarily required to mix appropriate ammonia into flue gas, while those skilled in the art think sweetening process simultaneously Ammonia is not needed, but it is a discovery of the invention that a small amount of ammonia is mixed in the forward direction flue gas of desulfurization can be particularly helpful to improve desulfurization Rate.
Preferably, the desulfurizing tower is a kind of three storehouse body structure, is from left to right divided into cup, middle room, rear chamber, cup, Sieve plate is provided between middle room, rear chamber and is respectively communicated with activated coke entrance and the activated coke outlet of desulfurizing tower, its smoke inlet, cigarette Gas outlet is respectively located at cup, rear chamber side.Desulfurizing tower from left to right direction, is divided into cup, middle room, rear chamber three work of formation Property coke bin, have sieve plate between each room, flue gas can pass through, each room uses single batcher discharge, batcher passes through frequency conversion control Speed processed is adjustable, and each room can set the holdup time of activated coke respectively and can set the optimal holdup time according to flue gas condition.
Preferably, the denitrating tower is a kind of two storehouse body structure, cup and rear chamber is divided into from right to left, centre is provided with sieve Plate, its smoke inlet is located at cup side, and exhanst gas outlet is located at rear chamber side.Denitrating tower is fixed bed reactors, fills high work Property high intensity carbon base catalyst, being divided into front and rear room forms 2 storehouses, can both realize that flue gas laminar flow passed through catalyst layer, operation It is stable, it can also realize sampling and the local replacing of preceding storehouse catalyst.High-activity high-strength carbon base catalyst is filled in by the present invention Fixed bed reactors, do not result in catalyst abrasion, and catalyst loss is small.
Preferably, the smoke inlet of the desulfurizing tower is shutter, and exhanst gas outlet is microwell plate structure;The denitration The smoke inlet of tower is shutter, and exhanst gas outlet is microwell plate structure.Flue gas is used in desulfurizing tower and denitrating tower entrance A kind of shutter, realizes that drag losses is smaller when flue gas enters device, and flue gas even distribution is realized on section, work is also can guarantee that Property Jiao/carbon base catalyst be not scattering into outside device.It is hardened using a kind of micropore in desulfurizing tower and denitrating tower outlet section position Structure, drag losses is smaller when realizing flue gas separating device, also can guarantee that activated coke/carbon-based catalysed particulate is not brought into after purification Flue gas in.
Preferably, in addition to activated coke heating system, the activated coke heating system is located at regenerator top.
Preferably, the activated coke heating system includes thermal source and thermal source blower fan, the intake stack and thermal source blower fan of thermal source Wind pipe be communicated in regenerator top.The intake stack of thermal source blower fan is also communicated in regenerator top and can made full use of The waste heat on regenerator top, reduces the energy resource consumption of activated coke heating system.
Preferably, the SO in addition in the middle part of regenerator2Blower fan.
Preferably, in addition to the cooling system located at regenerator bottom.
Preferably, the regenerator outlet at bottom is provided with sifter, and screened device is connected with the second induction system again.
A kind of method that use said system carries out dry desulfurization denitration to coal fired power plant flue gas, comprises the following steps:Will Enter desulfurizing tower, activated coke entrance of the activated coke from desulfurizing tower from the smoke inlet of desulfurizing tower after coal fired power plant flue gas blending ammonia Direction to activated coke Way out move, flue gas on desulfurizing tower bottom, top through activated coke cross-flow adsorption cleaning, in desulfurizing tower Portion is purified through activated coke counter current absorption, and then the exhanst gas outlet discharge through desulfurizing tower, is blended after ammonia, from the cigarette of denitrating tower again Gas entrance enters denitrating tower, is discharged after being catalyzed through carbon base catalyst from the exhanst gas outlet of denitrating tower.
Denitrating flue gas process has to spray into NH3, but SO2Can elder generation and NH3The sulphur ammonium of reaction generation has plugging hole to catalyst SO in gap and the influence of unfavorable regeneration, flue gas2There is inhibitory action to NO removing, and NO is to SO2The without hindrance effect of removing, because This flue gas desulfurization and denitration, which should be separated, to be carried out, and denitration after first desulfurization.
SO is adsorbed in activated coke2During, chemisorbed generation sulfuric acid absorption is in activated coke hole, and activated coke needs logical Cross regenerative system to be regenerated, isolate high-concentration sulfur dioxide gas into byproduct recovery process device, recover after regeneration The activated coke of activity returns to desulfurizing tower and is continuing with.
Beneficial effects of the present invention:
1st, the system for desulfuration and denitration that the present invention is provided can realize the desulphurization denitration of flue gas, and desulfurization and denitration are separately carried out, And denitration after first desulfurization, it is ensured that collaboration high-efficiency desulfurization and denitration;
2nd, in present system, desulfurizing tower adds counter-flow moving bed, smoke movement in desulfurization reactor using activated coke cross-flow Direction is cross-flow in entrance and exit section with the activated coke direction of motion, is adverse current in middle main adsorption section;In the flue gas of tower bottom Dust is removed and preliminary multiple pollutant purification absorption, the multiple pollutant in flue gas is carried out in adsorption section in the middle part of tower efficient Absorption, the flue gas on tower top carries out final essence in outlet section and fresh activity Jiao and removed, compared with conventional simple cross-flow adsorption tower, Activated coke utilization rate and physical and chemical adsorption ability are greatly improved;
3rd, in present system, denitrating tower uses high activity carbon base catalyst fixed bed, it is possible to achieve flue gas horizontal sliding is circulated Catalyst layer is crossed, compared with regular activated burnt denitration moving bed, denitration reaction speed, and reaction tower structure is not only greatly improved Simply, run easy to operate;
4th, the moving bed that system and method for the present invention are used reinforces fixed bed pattern and is adapted to coal fired power plant fume treatment spy Point, desulfuration efficiency reaches more than 99.0%, and adsorbs SO simultaneously3, flue dust, a small amount of material such as heavy metal, denitration efficiency reaches More than 85.0%, while realizing high efficiency desulphurization denitration, meet the environmental requirement of power plant's minimum discharge;Simultaneity factor is than traditional Moving bed desulphurization denitration pattern solid amount of movement is small, catalyst loss is small, simple in construction, and investment and operating cost have subtracted It is few.
Brief description of the drawings
Fig. 1 is present system structured flowchart;
Wherein, 1 is desulfurizing tower, and 2 be denitrating tower, and 3 be regenerator, and 4 be the first induction system, and 5 be the second induction system, 6 For flue gas blower fan, 7 be the first ammonia hybrid system, and 8 be the second ammonia hybrid system, 9-11 be followed successively by the cup of desulfurizing tower, middle room and Rear chamber, 12 and 13 be respectively the cup and rear chamber of denitrating tower, and 14 be activated coke heating system, and 15 be thermal source, and 16 be thermal source blower fan, 17 be SO2Blower fan, 18 be cooling blower, and 19 be sifter.
Embodiment
Technical scheme is specifically introduced below in conjunction with the accompanying drawings.
A kind of system for coal fired power plant flue gas dry desulfurizing denitration as shown in Figure 1, including desulfurization adsorption system, take off Nitre also original system, active coke regeneration system, activated coke induction system, flue gas system and ammonia hybrid system.
Desulfurization adsorption system is the desulfurizing tower 1 filled with activated coke, and top is activated coke entrance, and bottom goes out for activated coke Mouthful, bottom is provided with smoke inlet, and top is provided with exhanst gas outlet.Desulfurizing tower 1 is a kind of three storehouse body structure, before being from left to right divided into Room 9, middle room 10, rear chamber 11, enter between cup 9, middle room 10, rear chamber 11 provided with sieve plate and the activated coke that is respectively communicated with desulfurizing tower Mouth and activated coke outlet, its smoke inlet, exhanst gas outlet are respectively located at cup 9, the side of rear chamber 11.Smoke inlet is shutter Structure, exhanst gas outlet is microwell plate structure.Desulfurizing tower from left to right direction, is divided into cup, middle room, rear chamber three activated cokes of formation There is sieve plate between storehouse, each room, flue gas can pass through, each room uses single batcher discharge, batcher passes through VFC speed Degree is adjustable, and each room can set the holdup time of activated coke respectively and can set the optimal holdup time according to flue gas condition.
Denitration also original system is the denitrating tower 2 filled with carbon base catalyst, and right side is smoke inlet, and left side goes out for flue gas Mouthful.Denitrating tower 2 is a kind of two storehouse body structure, and cup 12 and rear chamber 13 are divided into from right to left, and centre is provided with sieve plate, and its flue gas enters Mouth is located at the side of cup 12, and exhanst gas outlet is located at the side of rear chamber 13.Smoke inlet is shutter, and exhanst gas outlet is microwell plate Structure.Denitrating tower is fixed bed reactors, fills high-activity high-strength carbon base catalyst, is divided into front and rear room and forms 2 storehouses, both may be used It is stable to realize flue gas laminar flow by catalyst layer, it can also realize sampling and the local replacing of preceding storehouse catalyst.This hair It is bright that high-activity high-strength carbon base catalyst is filled in fixed bed reactors, catalyst abrasion is not resulted in, catalyst loss is small.
Active coke regeneration system is activated coke regenerator 3.The top of regenerator 3 is provided with activated coke heating system 14, activated coke Heating system includes thermal source 15 and thermal source blower fan 16, and the intake stack of thermal source and the wind pipe of thermal source blower fan are communicated in regeneration The top of tower 3, can make full use of the waste heat on regenerator top, reduce the energy resource consumption of activated coke heating system.The middle part of regenerator 3 Provided with SO2Blower fan 17, bottom is provided with cooling blower 18.The outlet at bottom of regenerator 3 is provided with sifter 19, and screened device 19 is again with the Two induction systems 5 are connected.
Activated coke induction system includes being delivered to activated coke after absorption into the He of the first induction system 4 of regenerator from desulfurizing tower The activated coke that regenerator is lived again is delivered to the second induction system 5 of desulfurizing tower from regenerator, and the first induction system 4 is communicated in de- The activated coke outlet of sulphur tower 1 and regenerator top entry, the second induction system 5 are communicated in the outlet at bottom of regenerator 3 and desulfurizing tower 1 Activated coke entrance, the first induction system 4, the second induction system 5 respectively include conveyer and conveyance conduit.
Flue gas system includes the flue gas blower fan 6 that flue gas is delivered to desulfurizing tower smoke inlet, and desulfurizing tower and denitrating tower Between flue, the flue after denitrating tower exhanst gas outlet.
Ammonia hybrid system includes being used to mixing ammonia into the first ammonia hybrid system 7 and the second ammonia hybrid system into flue gas 8, the first ammonia hybrid system 7 is located between flue gas blower fan 6 and the smoke inlet of desulfurizing tower 1, and the second ammonia hybrid system 8 is located at desulfurizing tower Between 1 exhanst gas outlet and the smoke inlet of denitrating tower 2.
Denitrification process is necessarily required to mix appropriate ammonia into flue gas, while those skilled in the art think sweetening process simultaneously Ammonia is not needed, but it is a discovery of the invention that a small amount of ammonia is mixed in the forward direction flue gas of desulfurization can be particularly helpful to improve desulfurization Efficiency.
Flue gas uses a kind of shutter in desulfurizing tower and denitrating tower entrance, realizes that resistance is damaged when flue gas enters device Mistake is smaller, and flue gas even distribution is realized on section, also can guarantee that activated coke/carbon base catalyst is not scattering into outside device.In desulfurization Tower and denitrating tower outlet section position, using a kind of microwell plate structure, drag losses is smaller when realizing flue gas separating device, can also protect Card activated coke/carbon-based catalysed particulate is not brought into the flue gas after purification.
Dry desulfurization denitration can be carried out to coal fired power plant flue gas using said system, comprised the following steps:By coal-fired electricity Enter desulfurizing tower from the smoke inlet of desulfurizing tower after flue gas of standing blending ammonia, activated coke from the activated coke Way in of desulfurizing tower to Activated coke Way out move, flue gas on desulfurizing tower bottom, top through activated coke cross-flow adsorption cleaning, through work in the middle part of desulfurizing tower Property burnt counter current absorption purification, the then exhanst gas outlet discharge through desulfurizing tower is blended after ammonia again, from the smoke inlet of denitrating tower Into denitrating tower, discharged after being catalyzed through carbon base catalyst from the exhanst gas outlet of denitrating tower.
Denitrating flue gas process has to spray into NH3, but SO2Can elder generation and NH3The sulphur ammonium of reaction generation has plugging hole to catalyst SO in gap and the influence of unfavorable regeneration, flue gas2There is inhibitory action to NO removing, and NO is to SO2The without hindrance effect of removing, because This flue gas desulfurization and denitration, which should be separated, to be carried out, and denitration after first desulfurization.
SO is adsorbed in activated coke2During, chemisorbed generation sulfuric acid absorption is in activated coke hole, and activated coke needs logical Cross regenerative system to be regenerated, isolate high-concentration sulfur dioxide gas into byproduct recovery process device, recover after regeneration The activated coke of activity returns to desulfurizing tower and is continuing with.
Inventive desulfurization denitrating system can realize the desulphurization denitration of flue gas, and desulfurization and denitration are separately carried out, and first desulfurization Denitration afterwards, it is ensured that desulfurization is not interfere with each other with denitration;In present system, desulfurizing tower added using activated coke cross-flow it is counter-flow moving bed, Compared with conventional simple cross-flow adsorption tower, activated coke utilization rate and physical and chemical adsorption ability are greatly improved;Denitrating tower is using high Absorbent charcoal based catalyst fixed bed, compared with regular activated burnt moving bed, not only greatly improves denitration reaction speed, and reaction Tower structure is simple, runs easy to operate;The moving bed that system and method for the present invention are used reinforces fixed bed pattern and is adapted to fire coal Generating plant flue gas processing feature, desulfuration efficiency reaches more than 99.0%, and adsorbs SO simultaneously3, flue dust, a small amount of material such as heavy metal, Denitration efficiency reaches more than 85.0%, while realizing high efficiency desulphurization denitration, meets the environmental requirement of power plant's minimum discharge;Simultaneously System is smaller than traditional moving bed desulphurization denitration pattern solid amount of movement, catalyst loss is small, simple in construction, invests and runs into This has been reduced.
The effect of above-described embodiment is only that the essentiality content of the explanation present invention, but the guarantor of the present invention is not limited with this Protect scope.It will be understood by those within the art that, technical scheme can be modified or equally replaced Change, without departing from the essence and protection domain of technical solution of the present invention.

Claims (10)

1. a kind of system for coal fired power plant flue gas dry desulfurizing denitration, it is characterised in that:Including desulfurization adsorption system, denitration Also original system, active coke regeneration system, activated coke induction system, flue gas system and ammonia hybrid system;
The desulfurization adsorption system is the desulfurizing tower filled with activated coke, and top is activated coke entrance, and bottom exports for activated coke, Bottom is provided with smoke inlet, and top is provided with exhanst gas outlet;
The denitration also original system is the denitrating tower filled with carbon base catalyst, and right side is smoke inlet, and left side is exhanst gas outlet;
The active coke regeneration system is activated coke regenerator;
The activated coke induction system include by activated coke after absorption from desulfurizing tower be delivered to regenerator the first induction system and The activated coke that regenerator is lived again is delivered to the second induction system of desulfurizing tower from regenerator, and the first induction system is communicated in desulfurization The activated coke outlet of tower and regenerator top entry, the second induction system are communicated in the activity of regenerator outlet at bottom and desulfurizing tower Burnt entrance, the first induction system, the second induction system include conveyer and conveyance conduit respectively;
The flue gas system includes the flue gas blower fan and flue that flue gas is delivered to desulfurizing tower smoke inlet, and desulfurizing tower The flue after flue, denitrating tower exhanst gas outlet between denitrating tower;
The ammonia hybrid system includes being used to ammonia mixing the first ammonia hybrid system and the second ammonia hybrid system into flue gas, First ammonia hybrid system is located between flue gas blower fan and desulfurizing tower smoke inlet, and the second ammonia hybrid system goes out located at desulfurization tower flue gas Between mouth and denitrating tower smoke inlet.
2. system according to claim 1, it is characterised in that:The desulfurizing tower be a kind of three storehouse body structure, from a left side to The right side is divided into cup, middle room, rear chamber, and provided with sieve plate and activated coke entrance in desulfurizing tower is respectively communicated between cup, middle room, rear chamber With activated coke outlet, its smoke inlet, exhanst gas outlet are respectively located at cup, rear chamber side.
3. system according to claim 1, it is characterised in that:The denitrating tower be a kind of two storehouse body structure, from the right side to A left side is divided into cup and rear chamber, and centre is provided with sieve plate, and its smoke inlet is located at cup side, and exhanst gas outlet is located at rear chamber side.
4. the system according to Claims 2 or 3, it is characterised in that:The smoke inlet of the desulfurizing tower is shutter, Exhanst gas outlet is microwell plate structure;The smoke inlet of the denitrating tower is shutter, and exhanst gas outlet is microwell plate structure.
5. system according to claim 1, it is characterised in that:Also include activated coke heating system, activated coke heating system System is located at regenerator top.
6. system according to claim 5, it is characterised in that:The activated coke heating system includes thermal source and thermal source wind Machine, the intake stack of thermal source and the wind pipe of thermal source blower fan are communicated in regenerator top.
7. system according to claim 1, it is characterised in that:Also include the SO in the middle part of regenerator2Blower fan.
8. system according to claim 1, it is characterised in that:Also include the cooling system located at regenerator bottom.
9. system according to claim 1, it is characterised in that:The regenerator outlet at bottom is provided with sifter, screened Device is connected with the second induction system again.
10. a kind of method that any systems of use claim 1-9 carry out dry desulfurization denitration to coal fired power plant flue gas, its It is characterised by, comprises the following steps:Desulfurizing tower will be entered from the smoke inlet of desulfurizing tower after coal fired power plant flue gas blending ammonia, it is living Property Jiao from the activated coke Way in of desulfurizing tower to activated coke Way out move, flue gas is on desulfurizing tower bottom, top through activity Burnt cross-flow adsorption cleaning, is purified in the middle part of desulfurizing tower through activated coke counter current absorption, then the exhanst gas outlet discharge through desulfurizing tower, then After secondary blending ammonia, enter denitrating tower from the smoke inlet of denitrating tower, go out after being catalyzed through carbon base catalyst from the flue gas of denitrating tower Mouth discharge.
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CN111589303A (en) * 2020-06-03 2020-08-28 中冶华天工程技术有限公司 Sintering flue gas combined desulfurization and denitrification system
CN113667519B (en) * 2021-08-25 2023-06-27 中冶赛迪上海工程技术有限公司 Desulfurization system for blast furnace gas and control method thereof
CN113667519A (en) * 2021-08-25 2021-11-19 中冶赛迪上海工程技术有限公司 Desulfurization system for blast furnace gas and control method thereof
CN114367193A (en) * 2022-01-24 2022-04-19 哈尔滨工业大学 Efficient low-temperature combined desulfurization and denitrification system and method based on active coke function partition

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