CN107998859A - A kind of technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration - Google Patents

A kind of technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration Download PDF

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Publication number
CN107998859A
CN107998859A CN201711390455.9A CN201711390455A CN107998859A CN 107998859 A CN107998859 A CN 107998859A CN 201711390455 A CN201711390455 A CN 201711390455A CN 107998859 A CN107998859 A CN 107998859A
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flue gas
ultra
technique
dust removal
wet method
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宋小良
徐光泽
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SHUANGDUN ENVIRONMENT TECHNOLOGY Co Ltd
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SHUANGDUN ENVIRONMENT TECHNOLOGY Co Ltd
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Priority to CN201711390455.9A priority Critical patent/CN107998859A/en
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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
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    • 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
    • B01D53/60—Simultaneously removing sulfur oxides and 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/79—Injecting reactants
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    • 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
    • B01D53/96—Regeneration, reactivation or recycling of reactants
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/10—Oxidants
    • B01D2251/104—Ozone
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
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    • B01D2251/206—Ammonium compounds
    • B01D2251/2062—Ammonia
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
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    • B01D2251/30—Alkali metal compounds
    • B01D2251/304—Alkali metal compounds of sodium
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/402—Alkaline earth metal or magnesium compounds of magnesium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
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    • B01D2251/60—Inorganic bases or salts
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/20—Halogens or halogen compounds
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
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    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide
    • 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
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    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract

The invention discloses a kind of technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration, the step of technique are as follows：A, the flue gas of purified treatment is needed to be sent into the top of tubular type oxidation reactor through pipeline；B, the NO in the flue gas flowed from up to down in tubular type oxidation reactorxWith O3Generation Strong oxdiative reacts, by NOxIt is oxidized to high-valence state compound N soluble easily in waterxOy；C, circulation fluid progress counter current contacting reactive absorption N of the flue gas after Strong oxdiative reaction into bottom-up flowing and addition absorbent in washing packed towerxOy、SO2And the dust particles in flue gas are washed；D, after the flue gas after washed absorption and its fine droplets of entrainment continue upwardly into wet electrical dust precipitator processing, top discharge of the ultra-clean flue gas from wet electrical dust precipitator.Compared with common process, equipment is taken up an area saves more than 40%, saves equipment investment more than 20%, operating cost saving more than 20% technique of the present invention.

Description

A kind of technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration
Technical field
The present invention relates to each class A fuel A, smelting（It is metallurgical）, coal-fired or biomass power generation, the kiln gas processing skill for heating class Art field, it is specifically a kind of to carry out deep desulfuration denitration dust collecting to remove the SO in flue gas2、NOx, dust particles, two The technique to the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration of environment harmful such as Evil English.
Background technology
The flue gas of all kinds of kiln discharges often contains SO2、NOxIt is and other such as HF, HCl, H2More than two kinds of S etc. is harmful to group to environment Divide and dust particle, dirty flue gas adsorbing and trapping processing are always the important process process unit of flue gas cleaning treatment, method is very It is more：Such as denitration is using SNCR methods, the high middle warm area denitration of SCR methods, low nitrogen burning etc.；The method of desulfurization has as many as tens kinds, such as Calcium method, sodium method, ammonia process, magnesium processes, oxidized metal method, peroxide passivation, amine process, activated coke etc., washing or electrofiltration dedusting have Wash void tower, washing plate tower, Venturi tube washing, dynamic wave scrubbing, wet electrical dust precipitator, bag filter process etc..It is domestic at present main Introduce EDV methods, LoTOxTMMethod, WGS+Method is imitated its method and is improved, and denitration, desulfurization, dedusting are integrated into same dress In putting, but exist and invest the problems such as huge, operating cost is high, serious corrosion of equipment, inadequate processing depth.For it is economical, Simple efficient, the integrated wet denitration of long-term operation, desulfurization, the ultra-clean processing of dust removal integrated wet method, are always in industry The effort problem of skilled worker.
The content of the invention
In order to solve the problems in the prior art, the purpose of the present invention is to, there is provided one kind can carry out deep desulfuration denitration dust collecting To remove the SO in flue gas2、NOx, dust particles, bioxin etc. surpasses the dust removal integrated wet method of desulphurization denitration of environment harmful The technique of net processing flue gas.
The purpose of the present invention is what is solved by the following technical programs：
A kind of technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration, it is characterised in that：The step of technique, is as follows：
A, SO is contained2, NOx, dust particles need the flue gas of purified treatment to be sent into the top of tubular type oxidation reactor through pipeline；
B, the NO in the flue gas flowed from up to down in tubular type oxidation reactorxWith O3Generation Strong oxdiative reacts, by NOxOxidation The compound N soluble easily in water into high-valence statexOy；
C, the flue gas after Strong oxdiative reaction enters bottom-up flowing and the circulation fluid of addition absorbent in washing packed tower and carries out Counter current contacting reactive absorption NxOy、SO2And the dust particles in flue gas are washed；
D, the flue gas after washed absorption and its fine droplets of entrainment continue upwardly into wet electrical dust precipitator, charged through discharging And the lower fine droplets of electric field force effect are completely separated with the particulate matter in flue gas, acid mist, ultra-clean flue gas is from wet-esp The top discharge of device.
The step（a）And step（b）In tubular type oxidation reactor in be equipped with ozone spray distribution device and spiral-flow type anxious Diffusion mixer, spiral-flow type urgency diffusion mixer are located at the lower section of ozone spray distribution device, and ozone spray distribution device is spiral downwards The O that formula sprays3With the NO in the flue gas that flows from up to downxUnder the action of spiral-flow type urgency diffusion mixer, NO can be madexWith O3Strong oxdiative reaction was completed within 0.3~1.5 second time.
The step（b）In Strong oxdiative reaction in, the O in tubular type oxidation reactor3With the molar ratio of the NO in flue gas 0.8~2.0；And the N that Strong oxdiative reaction producesxOyIncluding NO3、N2O5、NO2、N2O3。
The ozone spray distribution device is connected by pipeline with ozone generator, O3Using air-source or pure oxygen source of the gas Produced by the whole DC power supply of high-frequency and high-voltage in ozone generator.
The step（c）In the lower part of washing packed tower be connected with the bottom of tubular type oxidation reactor, filled out in washing The middle part of material tower is equipped with packing layer and the top of packing layer is equipped with fountain distributor, and fountain distributor passes through with circulation fluid The circulation liquid pipe of pump is connected with washing the circulation fluid storage tank of filler tower bottom；Fountain distributor sprays downwards addition absorbent The flue gas of circulation fluid and bottom-up flowing carry out counter current contacting reactive absorption NxOy、SO2And to the dust particles in flue gas into Row washing.
Structured packing or plate-type corrugated shape filler of the filler that described filler layer uses for PP/PVD/PTFE materials；Filler The top of layer sets one or two layers fountain distributor, and every layer of fountain distributor is using independent corresponding circulation fluid therewith Pump supply circulation fluid.
For the circulation liquid pipe by shunt valve with being connected at the top of settler or filter, settler or filter will Dirt mud filtering in circulation fluid discharges and the clear liquid after filtering is back to the circulation fluid of washing filler tower bottom by clear liquid pipe In storage tank.
The circulation fluid storage tank of the washing filler tower bottom is by the absorbent liquid supplementation pipe with absorbent make-up pump with inhaling Receive agent storage tank to be connected, the pH value for supplementing circulation fluid by absorbent make-up pump absorbent circulation fluid is maintained at 5~10.
The step（c）In absorbent be alkaline absorbent or dioxygen water absorbent, alkaline absorbent includes ammonium hydroxide, hydrogen Sodium hydroxide solution, calcium hydroxide solution, containing magnesium oxide solution, urea liquid.
The circulation fluid storage tank of the washing filler tower bottom is connected with the waste liquid discharge pipe with liquid waste discharge pump.
The step（d）In washing packed tower at the top of and the bottom of wet electrical dust precipitator between be equipped with baffle type defoaming device Or cell modular eddy flow dehydrator, baffle type defoaming device or cell modular eddy flow dehydrator can be by the cigarettes after washing absorption Drop of the particle diameter more than 5 μm or the drop containing dust particles remove in gas and its fine droplets of entrainment.
The top of baffle type defoaming device or cell modular the eddy flow dehydrator is equipped with flushing/shower device, and flushing/shower device can Backwash is carried out to baffle type defoaming device or cell modular eddy flow dehydrator to keep its cleaning to exempt from fouling.
The step（d）In the anode tube of wet electrical dust precipitator be anti-corrosion, conductive, flame retardant type CFRP material honeycombed knots Structure or corrosion resistant alloy steel material honeycomb-shaped structure, the inscribed circle diameter of anode tube is 300mm/330mm/350mm/360mm/, sun Pole pipe length is 4.0~6.0m；By prickle along fluidization treatment cathode line for anti-corrosion electrochemical corrosion resistant nickel-base alloy, double Phase steel alloy, titanium alloy, lead-antimony alloy, high-voltage DC power supply application constant flow high pressure source or high frequency high voltage dc power source, wet type electricity The supply voltage of deduster is 40~70KV, 0.1~1.0mA/m of cathode line discharge current density；Cathode line electric discharge it is charged and Under electric field force effect, the flue gas after washing absorption and its particulate in the fine droplets of entrainment and drop are driven to anode tube, lotus Electric particulate discharges electric charge, dust and is flowed down naturally from anode tube by the nuisance of drop dissolving or attached collection.
The step（a）In flue gas refer to SO2Content is 35~8000mg/m3、NOxContent is 50~1200mg/m3, powder Dirt particle content is 0~150mg/m3And the pending flue gas that temperature is 0~180 DEG C.
The step（d）In refer to from the ultra-clean flue gas of the top discharge of wet electrical dust precipitator：NO after processing in flue gasx Content is 0~50mg/m3、SO2Content is 0~35mg/m3, dust particle content be 0~10mg/m3。
Last row flue gas analyzer is equipped with the top vent of the wet electrical dust precipitator.
The bottom of the tubular type oxidation reactor is arranged at the top of the lower part of washing packed tower and washing packed tower and sets Wet electrical dust precipitator is put, tubular type oxidation reactor, washing packed tower, wet electrical dust precipitator form the main body of denitration desulfurizing dust-collector Part；The housing of the tubular type oxidation reactor is made of anti-corrosion oxytolerant alloy, and the housing for washing packed tower uses work Engineering plastics or steel alloy are made, and the housing of wet electrical dust precipitator uses the engineering plastics for carrying flame-retarding characteristic or steel alloy to be made.
The present invention has the following advantages compared with prior art：
Contain SO at the same time in the process stove gas of the present invention2、NOx, dust particle etc. flue gas, tubular type is aoxidized anti- Device is answered to be connected directly with washing packed tower, wash packed tower top and wet electrical dust precipitator is connected to form the ultra-clean place of integral eliminating dampness method Physics and chemistry device, the NO in flue gas after processingxContent is 0~50mg/m3、SO2Content is 0~35mg/m3, dust particle contains Measure as 0~10mg/m3, and most bioxin in flue gas are removed, to reach the purification and washing of setting or assimilation effect；With it is normal The denitration of rule, desulfurization, dust removing units separate treatment process and compare, equipment take up an area save more than 40%, save equipment investment 20% with Upper, operating cost saves more than 20%, and the technique gas cleaning intensity height, reduced investment, efficient and energy-saving effect are obvious, therefore suitable Preferably promote the use of.
Brief description of the drawings
Attached drawing 1 is device knot used by the ultra-clean technique for handling flue gas of the dust removal integrated wet method of desulphurization denitration of the present invention Structure schematic diagram.
Wherein：1-tubular type oxidation reactor；2-ozone spray distribution device；3-spiral-flow type urgency diffusion mixer；4-smelly Oxygen Generator；5-washing packed tower；6-packing layer；7-fountain distributor；8-baffle type defoaming device or cell modular Eddy flow dehydrator；9-flushing/shower device；10-wet electrical dust precipitator；11-last row flue gas analyzer；12-settler or filtering Device；13-clear liquid pipe；14-recycle liquid pump；15-liquid waste discharge pump；16-absorbent make-up pump；17-absorbent storage tank.
Embodiment
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1：A kind of the step of technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration, the technique, is such as Under：A, SO is contained2, NOx, dust particles need the flue gas of purified treatment to be sent into the top of tubular type oxidation reactor 1 through pipeline, need The flue gas of purified treatment refers to SO2Content is 35~8000mg/m3、NOxContent is 50~1200mg/m3, dust particle content be 0~150mg/m3And the pending flue gas that temperature is 0~180 DEG C；B, flowed from up to down in tubular type oxidation reactor 1 NO in flue gasxWith O3Generation Strong oxdiative reacts, and the O in tubular type oxidation reactor 13Molar ratio with the NO in flue gas is 0.8 ~2.0, by NOxIt is oxidized to high-valence state compound N soluble easily in waterxOy, the N of Strong oxdiative reaction generationxOyIncluding NO3、N2O5、 NO2、N2O3；C, the flue gas after Strong oxdiative reaction enters bottom-up flowing and the circulation fluid of addition absorbent in washing packed tower 5 Carry out counter current contacting reactive absorption NxOy、SO2And the dust particles in flue gas are washed；D, the flue gas after washed absorption And its fine droplets of entrainment continue upwardly into wet electrical dust precipitator 10, through the lower fine droplets of charged and electric field force effect of discharging It is completely separated with the particulate matter in flue gas, acid mist, ultra-clean flue gas is removed from the top discharge of wet electrical dust precipitator 10, wet type electricity The ultra-clean flue gas of the top discharge of dirt device 10 refers to：NO after processing in flue gasxContent is 0~50mg/m3、SO2Content for 0~ 35mg/m3, dust particle content be 0~10mg/m3.The bottom of tubular type oxidation reactor 1 is arranged on the lower part of washing packed tower And the top of washing packed tower sets wet electrical dust precipitator 10, tubular type oxidation reactor 1, washing packed tower, wet electrical dust precipitator 10 form the main part of denitration desulfurizing dust-collector；The housing of the tubular type oxidation reactor 1 uses anti-corrosion oxytolerant alloy （Such as S31603, duplex steel alloys）It is made, the housing for washing packed tower is made of engineering plastics or steel alloy, and wet type electricity removes The housing of dirt device 10 uses the engineering plastics for carrying flame-retarding characteristic or steel alloy to be made.The tables of equipment set processing cigarette that the technique uses Tolerance is 0~1600000m3/ h, if needed in the flue gas of purified treatment, dust content is excessive, SO2Too high levels are needed using pre- Treatment measures.
In above-mentioned technique, the suddenly diffusion mixing of ozone spray distribution device 2 and spiral-flow type is equipped with tubular type oxidation reactor 1 Device 3, spiral-flow type urgency diffusion mixer 3 are located at the lower section of ozone spray distribution device 2, ozone spray distribution device 2 by pipeline with it is smelly Oxygen Generator 4 is connected, O3Using the production in ozone generator 4 by the whole DC power supply of high-frequency and high-voltage of air-source or pure oxygen source of the gas It is raw；The O that ozone spray distribution device 2 spirally sprays downwards3With the NO in the flue gas that flows from up to downxSuddenly spread in spiral-flow type Under the action of mixer 3, NO can be madexWith O3Strong oxdiative reaction was completed within 0.3~1.5 second time.Wash the lower part of packed tower It is connected with the bottom of tubular type oxidation reactor 1, packing layer 6, the filler that packing layer 6 uses is equipped with the middle part of washing packed tower Structured packing or plate-type corrugated shape filler for PP/PVD/PTFE materials；Sprayed in the top of packing layer 6 equipped with one or two layers Formula distributor 7, fountain distributor 7 are stored up by the circulation liquid pipe with recycle liquid pump 14 and the circulation fluid of washing filler tower bottom Groove is connected, and every layer of fountain distributor 7 is using individually corresponding recycle liquid pump 14 supplies circulation fluid therewith；Fountain is distributed Device 7 sprays downwards the circulation fluid of addition absorbent and carries out counter current contacting reactive absorption N with the flue gas of bottom-up flowingxOy、SO2 And the dust particles in flue gas are washed；Circulation liquid pipe is connected by shunt valve with the top of settler or filter 12 Logical, the dirt mud filtering in circulation fluid is discharged and is back to the clear liquid after filtering by clear liquid pipe 13 by settler or filter 12 Wash in the circulation fluid storage tank of filler tower bottom to keep the clear liquid of the circulatory system to circulate, circulation fluid is filtered through measure circulation Liquid-tight degree prevents the crystallization of packing material absorbing scrubbing tower, deposition from blocking to control solution salt degree of unsaturation.In addition filler tower bottom is washed Circulation fluid storage tank be connected by the absorbent liquid supplementation pipe with absorbent make-up pump 16 with absorbent storage tank 17, pass through absorption Agent make-up pump 16 causes the pH value of circulation fluid to be maintained at 5~10 in circulation fluid supplement absorbent, and absorbent is generally alkalescence and absorbs Agent or additive or dioxygen water absorbent, alkaline absorbent include ammonium hydroxide, sodium hydroxide solution, calcium hydroxide solution, containing oxidation Magnesium solution, urea liquid；The circulation fluid storage tank for washing filler tower bottom is connected with the waste liquid discharge pipe with liquid waste discharge pump 15 It is logical.Baffle type defoaming device or cell modular eddy flow are equipped between the bottom of wet electrical dust precipitator 10 at the top of washing packed tower Dehydrator 8, baffle type defoaming device or cell modular eddy flow dehydrator 8 can be by the micro- of the flue gas after washing absorption and its entrainment Drop of the particle diameter more than 5 μm or the drop containing dust particles remove in small droplet, baffle type defoaming device or cell modular eddy flow The top of dehydrator 8 is equipped with flushing/shower device 9, and flushing/shower device 9 can be to baffle type defoaming device or cell modular eddy flow dehydrator 8 Backwash is carried out to keep its cleaning to exempt from fouling.The anode tube of wet electrical dust precipitator 10 is anti-corrosion, conductive, flame retardant type CFRP material bees Nest shape structure or corrosion resistant alloy steel material honeycomb-shaped structure, the inscribed circle diameter of anode tube is 300mm/330mm/350mm/ 360mm/, anode length of tube are 4.0~6.0m；By prickle along the nickel that the cathode line of fluidization treatment is anti-corrosion electrochemical corrosion resistant Based alloy, duplex steel alloys, titanium alloy, lead-antimony alloy, high-voltage DC power supply application constant flow high pressure source or high-frequency high-voltage direct-current electricity Source, the supply voltage of wet electrical dust precipitator 10 is 40~70KV, 0.1~1.0mA/m of cathode line discharge current density；In cathode line Discharge under the effect of charged and electric field force, the flue gas after washing absorption and its particulate in the fine droplets of entrainment and drop are driven to Anode tube, Charge particle release electric charge and are flowed down dust naturally by drop dissolving or the nuisance of attached collection from anode tube.
Last row flue gas analyzer 11 is equipped with the top vent of wet electrical dust precipitator 10 at the same time, passes through last row flue gas point Analyzer 11 measures the NO of wet-esp exiting flue gasx、SO2, dust particle content, adjust O3The amount of feeding, the alkaline desulfurization of adjustment Agent or the catalyst amount of feeding, 10 delivery of adjustment wet electrical dust precipitator, adjustment circulation fluid discharge rate so that after processing in flue gas NOxContent is 0~50mg/m3、SO2Content is 0~35mg/m3, dust particle content be 0~10mg/m3, and remove in flue gas Most bioxin, to reach the purification and washing of setting or assimilation effect.
During the process implementing of the present invention, NO will be contained firstx、SO2, dust particle and other such as HF, HCl, bioxin Flue gas, is sent into tubular type oxidation reactor 1 so that NO through fluexWith O3It is quick that Strong oxdiative reaction occurs, generate height soluble easily in water Valency nitrogen oxides, the flue gas after Strong oxdiative reaction enter alkaline absorbent in washing packed tower 5 and circulation fluid or additive into Row NOx、SO2Absorption, and trapping absorption is carried out to dust particle, be specially flue gas Ta Nei occur at the same time mass transfer, heat transfer, The physics chemical actions such as absorption, adiabatic evaporation, NxOy、SO2, the washed absorption capture purification such as soot dust granule；Wet flue gas is through baffle After formula demister or cell modular eddy flow dehydrator 8 remove big particle diameter drop, flue gas enters wet electrical dust precipitator 10, in cathode Discharge under the effect of charged and electric field force, particulate and drop are driven to anode tube, Charge particle release electric charge, dust and molten by drop The nuisance of solution flows down naturally from anode tube；Last row flue gas analyzer 11 is to the NO in last row flue gasx、SO2, dust particle it is dense Degree is detected, by automatic or auto-manual control system adjustment ozone generator 3 for ozone amount, adjustment washing packed tower 5 absorbent supply, adjust the discharge circulating fluid volume of recycle liquid pump 14, so that the NO after control process in flue gasxContent for 0~ 50mg/m3、SO2Content is 0~35mg/m3, dust particle content be 0~10mg/m3, and remove the overwhelming majority two in flue gas Evil English, to realize the purification and washing of setting or assimilation effect.During washing packed tower 5 is handled：Recycle liquid pump 14 is to wash Wash packed tower 5 and washing absorption liquid is provided, absorbing liquid sprays distribution through one or two layers fountain distributor 7 and falls into packing layer 6 Complete to absorb washing process with flue gas adverse current high-efficient contact, with the progress of absorption, absorbent or catalyst disappears in circulation fluid Consumption from absorbent storage tank 17, it is necessary to be added；With the solid content increase in circulation fluid, circulation fluid branch is partly into Settler or filter 12 are concentrated, and clear liquid returns to washing packed tower 5 and circulated, outside high solids underflow liquid discharge system Go to handle.
Contain SO at the same time in the process stove gas of the present invention2、NOx, dust particle etc. flue gas, by tubular type oxygen Change reactor 1 be connected directly with washing packed tower 5, wash 5 top of packed tower be connected to form with wet electrical dust precipitator 10 it is integrated The ultra-clean processing makeup of wet method is put, the NO in flue gas after processingxContent is 0~50mg/m3、SO2Content is 0~35mg/m3, powder Dirt particle content is 0~10mg/m3, and most bioxin in flue gas are removed, to reach the purification and washing of setting or suction Produce effects fruit；Compared with conventional denitration, desulfurization, dust removing units separate treatment process, equipment takes up an area saving more than 40%, saving is set Standby investment more than 20%, operating cost save more than 20%, the technique gas cleaning intensity height, reduced investment, efficient and energy saving effect Fruit is obvious, therefore suitably promotes the use of.
Above example is merely illustrative of the invention's technical idea, it is impossible to protection scope of the present invention is limited with this, it is every According to technological thought proposed by the present invention, any change done on the basis of technical solution, each falls within the scope of the present invention Within；The technology that the present invention is not directed to can be realized by the prior art.

Claims (17)

  1. A kind of 1. technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration, it is characterised in that：The step of technique, is such as Under：
    A, SO is contained2, NOx, dust particles need the flue gas of purified treatment to be sent into the top of tubular type oxidation reactor through pipeline；
    B, the NO in the flue gas flowed from up to down in tubular type oxidation reactorxWith O3Generation Strong oxdiative reacts, by NOxOxidation The compound N soluble easily in water into high-valence statexOy；
    C, the flue gas after Strong oxdiative reaction enters bottom-up flowing and the circulation fluid of addition absorbent in washing packed tower and carries out Counter current contacting reactive absorption NxOy、SO2And the dust particles in flue gas are washed；
    D, the flue gas after washed absorption and its fine droplets of entrainment continue upwardly into wet electrical dust precipitator, charged through discharging And the lower fine droplets of electric field force effect are completely separated with the particulate matter in flue gas, acid mist, ultra-clean flue gas is from wet-esp The top discharge of device.
  2. 2. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1, it is characterised in that： The step（a）And step（b）In tubular type oxidation reactor in be equipped with the suddenly diffusion mixing of ozone spray distribution device and spiral-flow type Device, spiral-flow type urgency diffusion mixer are located at the lower section of ozone spray distribution device, and ozone spray distribution device spirally sprays downwards O3With the NO in the flue gas that flows from up to downxUnder the action of spiral-flow type urgency diffusion mixer, NO can be madexWith O30.3~ Strong oxdiative reaction is completed in 1.5 second time.
  3. 3. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1 or 2, its feature exist In：The step（b）In Strong oxdiative reaction in, the O in tubular type oxidation reactor3Molar ratio with the NO in flue gas is 0.8 ~2.0；And the N that Strong oxdiative reaction producesxOyIncluding NO3、N2O5、NO2、N2O3。
  4. 4. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 2, it is characterised in that： The ozone spray distribution device is connected by pipeline with ozone generator, O3High frequency is passed through using air-source or pure oxygen source of the gas The whole DC power supply of high pressure produces in ozone generator.
  5. 5. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1, it is characterised in that： The step（c）In the lower part of washing packed tower be connected with the bottom of tubular type oxidation reactor, in packed tower is washed Portion is equipped with packing layer and the top of packing layer is equipped with fountain distributor, and fountain distributor passes through the circulation with recycle liquid pump Liquid pipe is connected with washing the circulation fluid storage tank of filler tower bottom；Fountain distributor sprays downwards the circulation fluid of addition absorbent Counter current contacting reactive absorption N is carried out with the flue gas of bottom-up flowingxOy、SO2And the dust particles in flue gas are washed.
  6. 6. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 5, it is characterised in that： Structured packing or plate-type corrugated shape filler of the filler that described filler layer uses for PP/PVD/PTFE materials；The top of packing layer One or two layers fountain distributor is set, and every layer of fountain distributor is using individually corresponding recycle liquid pump supply follows therewith Ring liquid.
  7. 7. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 5, it is characterised in that： The circulation liquid pipe at the top of settler or filter by shunt valve with being connected, and settler or filter are by circulation fluid Dirt mud filtering discharge and by the clear liquid after filtering by clear liquid pipe be back to washing filler tower bottom circulation fluid storage tank in.
  8. 8. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration, its feature exist according to claim 1 or 5 In：The circulation fluid storage tank of the washing filler tower bottom is stored up by the absorbent liquid supplementation pipe with absorbent make-up pump and absorbent Groove is connected, and the pH value that absorbent circulation fluid is supplemented circulation fluid by absorbent make-up pump is maintained at 5~10.
  9. 9. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1, it is characterised in that： The step（c）In absorbent be alkaline absorbent or dioxygen water absorbent, it is molten that alkaline absorbent includes ammonium hydroxide, sodium hydroxide Liquid, calcium hydroxide solution, containing magnesium oxide solution, urea liquid.
  10. 10. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1 or 5, its feature It is：The circulation fluid storage tank of the washing filler tower bottom is connected with the waste liquid discharge pipe with liquid waste discharge pump.
  11. 11. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1, its feature exist In：The step（d）In washing packed tower at the top of and the bottom of wet electrical dust precipitator between be equipped with baffle type defoaming device or list Element module formula eddy flow dehydrator, baffle type defoaming device or cell modular eddy flow dehydrator can by the flue gas after washing absorption and Drop of the particle diameter more than 5 μm or the drop containing dust particles remove in its fine droplets carried secretly.
  12. 12. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 11, its feature exist In：The top of baffle type defoaming device or cell modular the eddy flow dehydrator is equipped with flushing/shower device, and flushing/shower device can be to gear Board-like demister or cell modular eddy flow dehydrator carries out backwash to keep its cleaning to exempt from fouling.
  13. 13. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1 or 11, its feature It is：The step（d）In the anode tube of wet electrical dust precipitator be anti-corrosion, conductive, flame retardant type CFRP material honeycomb-shaped structures Or corrosion resistant alloy steel material honeycomb-shaped structure；It is Ni-based for anti-corrosion electrochemical corrosion resistant along the cathode line of fluidization treatment by prickle Alloy, duplex steel alloys, titanium alloy, lead-antimony alloy, high-voltage DC power supply application constant flow high pressure source or high frequency high voltage dc power source； In the case where cathode line electric discharge is charged and electric field force acts on, the flue gas after washing absorption and its particulate and liquid in the fine droplets of entrainment Drop is driven to anode tube, Charge particle release electric charge, dust and is flowed naturally from anode tube by the nuisance of drop dissolving or attached collection Under.
  14. 14. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1, its feature exist In：The step（a）In flue gas refer to SO2Content is 35~8000mg/m3、NOxContent is 50~1200mg/m3, dust particles Thing content is 0~150mg/m3And the pending flue gas that temperature is 0~180 DEG C.
  15. 15. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1, its feature exist In：The step（d）In refer to from the ultra-clean flue gas of the top discharge of wet electrical dust precipitator：NO after processing in flue gasxContent For 0~50mg/m3、SO2Content is 0~35mg/m3, dust particle content be 0~10mg/m3。
  16. 16. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1 or 15, its feature It is：Last row flue gas analyzer is equipped with the top vent of the wet electrical dust precipitator.
  17. 17. the technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration according to claim 1, its feature exist In：The bottom of the tubular type oxidation reactor is arranged on the lower part of washing packed tower and washs the top setting wet type of packed tower Electric precipitator, tubular type oxidation reactor, washing packed tower, wet electrical dust precipitator form the main part of denitration desulfurizing dust-collector； The housing of the tubular type oxidation reactor is made of anti-corrosion oxytolerant alloy, and the housing for washing packed tower uses engineering plastics Or steel alloy is made, the housing of wet electrical dust precipitator uses the engineering plastics for carrying flame-retarding characteristic or steel alloy to be made.
CN201711390455.9A 2017-12-21 2017-12-21 A kind of technique of the ultra-clean processing flue gas of the dust removal integrated wet method of desulphurization denitration Pending CN107998859A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110548378A (en) * 2018-06-01 2019-12-10 上海梅山钢铁股份有限公司 Method for synchronously treating sulfur dioxide and nitrogen oxide in sintering flue gas by low-temperature dry single tower
WO2020001258A1 (en) * 2018-06-28 2020-01-02 广东佳德环保科技有限公司 Flue gas desulfurization, denitration, dedusting and white smoke removal device
CN113117485A (en) * 2019-12-30 2021-07-16 中晶环境科技股份有限公司 Method for desulfurization and denitrification by using ammonium bisulfite
CN115970460A (en) * 2023-01-16 2023-04-18 中国石油天然气集团有限公司 Flue gas treatment device and treatment method

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3841642A1 (en) * 1988-12-10 1990-06-13 Adam Muenzenberger Gmbh Nozzle grating for gas scrubbers, absorbers and the like and column internal composed thereof
CN101053748A (en) * 2007-04-30 2007-10-17 武汉凯迪电力环保有限公司 Simultaneously removing various pollutant wet ammonia flue gas cleaning technology and system thereof
CN102247750A (en) * 2011-07-11 2011-11-23 华东理工大学 Device and method for simultaneously desulfurizing and denitrifying flue gas by ozone catalytic oxidation process
CN103736373A (en) * 2013-12-31 2014-04-23 浙江天蓝环保技术股份有限公司 Flue gas treatment method and flue gas treatment device capable of simultaneous desulfurization, de-nitration and mercury removal through magnesium oxide
CN103801238A (en) * 2014-01-22 2014-05-21 浙江大学 Double-rotational flow gas-gas rapid mixing reactor
CN104607136A (en) * 2013-11-05 2015-05-13 中国石油化工股份有限公司 Spindle-shaped structured packing
CN205461713U (en) * 2016-03-22 2016-08-17 北京长信太和节能科技有限公司 Super clean endless integrated device of organic catalysis of coal fired boiler flue gas low temperature
CN205570079U (en) * 2016-03-31 2016-09-14 山西中节能潞安电力节能服务有限公司 SOx/NOx control demercuration removes ultralow discharge system of micronic dust integration
CN106064016A (en) * 2016-08-08 2016-11-02 辽宁信威环保科技有限公司 The ultra-clean dust removal integrated plant of exhuast gas desulfurization denitration
CN205760536U (en) * 2016-07-08 2016-12-07 青岛国林环保科技股份有限公司 A kind of device of oxidizing process gas cleaning desulfurization denitration demercuration
CN106237814A (en) * 2016-08-31 2016-12-21 山东天力能源股份有限公司 A kind of flue gas ultra-clean discharge desulphurization denitration dust removal integrated plant and technique thereof
CN205948626U (en) * 2016-06-29 2017-02-15 南京龙源环保有限公司 Denitration dust collector

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3841642A1 (en) * 1988-12-10 1990-06-13 Adam Muenzenberger Gmbh Nozzle grating for gas scrubbers, absorbers and the like and column internal composed thereof
CN101053748A (en) * 2007-04-30 2007-10-17 武汉凯迪电力环保有限公司 Simultaneously removing various pollutant wet ammonia flue gas cleaning technology and system thereof
CN102247750A (en) * 2011-07-11 2011-11-23 华东理工大学 Device and method for simultaneously desulfurizing and denitrifying flue gas by ozone catalytic oxidation process
CN104607136A (en) * 2013-11-05 2015-05-13 中国石油化工股份有限公司 Spindle-shaped structured packing
CN103736373A (en) * 2013-12-31 2014-04-23 浙江天蓝环保技术股份有限公司 Flue gas treatment method and flue gas treatment device capable of simultaneous desulfurization, de-nitration and mercury removal through magnesium oxide
CN103801238A (en) * 2014-01-22 2014-05-21 浙江大学 Double-rotational flow gas-gas rapid mixing reactor
CN205461713U (en) * 2016-03-22 2016-08-17 北京长信太和节能科技有限公司 Super clean endless integrated device of organic catalysis of coal fired boiler flue gas low temperature
CN205570079U (en) * 2016-03-31 2016-09-14 山西中节能潞安电力节能服务有限公司 SOx/NOx control demercuration removes ultralow discharge system of micronic dust integration
CN205948626U (en) * 2016-06-29 2017-02-15 南京龙源环保有限公司 Denitration dust collector
CN205760536U (en) * 2016-07-08 2016-12-07 青岛国林环保科技股份有限公司 A kind of device of oxidizing process gas cleaning desulfurization denitration demercuration
CN106064016A (en) * 2016-08-08 2016-11-02 辽宁信威环保科技有限公司 The ultra-clean dust removal integrated plant of exhuast gas desulfurization denitration
CN106237814A (en) * 2016-08-31 2016-12-21 山东天力能源股份有限公司 A kind of flue gas ultra-clean discharge desulphurization denitration dust removal integrated plant and technique thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
刘建民等: "《火电厂氮氧化物控制技术》", 31 December 2012, 中国电力出版社 *
维特科夫等: "《燃用化石燃料的蒸汽发电厂》", 31 August 1992, 水利电力出版社 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110548378A (en) * 2018-06-01 2019-12-10 上海梅山钢铁股份有限公司 Method for synchronously treating sulfur dioxide and nitrogen oxide in sintering flue gas by low-temperature dry single tower
WO2020001258A1 (en) * 2018-06-28 2020-01-02 广东佳德环保科技有限公司 Flue gas desulfurization, denitration, dedusting and white smoke removal device
CN113117485A (en) * 2019-12-30 2021-07-16 中晶环境科技股份有限公司 Method for desulfurization and denitrification by using ammonium bisulfite
CN115970460A (en) * 2023-01-16 2023-04-18 中国石油天然气集团有限公司 Flue gas treatment device and treatment method
CN115970460B (en) * 2023-01-16 2024-01-23 中国石油天然气集团有限公司 Flue gas treatment device and method

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