CN109059025A - A kind of smoke comprehensive processing unit and its method - Google Patents

A kind of smoke comprehensive processing unit and its method Download PDF

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Publication number
CN109059025A
CN109059025A CN201810811395.1A CN201810811395A CN109059025A CN 109059025 A CN109059025 A CN 109059025A CN 201810811395 A CN201810811395 A CN 201810811395A CN 109059025 A CN109059025 A CN 109059025A
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CN
China
Prior art keywords
water
phase transformation
outlet
tube
raw water
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CN201810811395.1A
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Chinese (zh)
Inventor
毛双华
姜小栋
王浩添
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Zhejiang Ju Hua Thermal Power Co Ltd
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Zhejiang Ju Hua Thermal Power Co Ltd
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Priority to CN201810811395.1A priority Critical patent/CN109059025A/en
Publication of CN109059025A publication Critical patent/CN109059025A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22DPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00Feed-water heaters, i.e. economisers or like preheaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/006Layout of treatment plant
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00Preventing emissions
    • F23J2215/20Sulfur; Compounds thereof

Abstract

The invention discloses a kind of smoke comprehensive processing units, including boiler, back-end ductwork, deduster, air-introduced machine, desulfuration absorbing tower, phase transformation knockouts and chimney, phase transformation knockouts is provided with original water inlet and raw water outlet, original water inlet is connected with raw water preliminary treatment device, raw water outlet is connected with treating nature water device, the water outlet for the treatment of nature water device is connected with the water inlet of desalination water preparation apparatus, and the import of the water outlet and sweet-water tank of desalination water preparation apparatus connects.The invention also discloses the methods for using Integrated Processing Unit processing flue gas.The present invention is more efficient, energy-efficient while solving the problems, such as that electric precipitation can not remove fine particle to utilize boiler smoke, not only play the role of dedusting environment friendly, also by the secondary use of flue gas ash removal low-temperature heat source obtained, heat water treatment facilities raw water, water treatment facilities efficiency is improved, energy utilization rate is greatly promoted, reduces energy consumption, fume afterheat is recycled, improves Unit Economic efficiency comprehensively.

Description

A kind of smoke comprehensive processing unit and its method
Technical field
The present invention relates to coal fired power plant technical field of energy saving and environmental protection, and in particular to a kind of smoke comprehensive processing unit and its side Method.
Background technique
At this stage, coal-burning power plant implements in full minimum discharge and reducing energy consumption, and coal consumption for power generation and disposal of pollutants is greatly reduced, With this reach power industry clean, efficient and Informatization Development, substantially cut down flue gas pollutant discharge amount.Domestic dedusting skill Art is mainly electric precipitation, bag-type dust, bundled tube deduster etc., and electric precipitator is due to high-efficient, low energy consumption, can handle The advantages that high-temperature flue gas of big exhaust gas volumn, sturdy and durable, maintenance pressure is small, and without secondary pollution, it is once public always in the world It is considered efficient cleaner.Current electric precipitation new technology has: low temperature electric precipitation, wet-esp, bag is compound removes for electricity The technologies such as dirt, the transformation of electric precipitation high frequency electric source.
Wherein, electric bag dust has the characteristics that investment is big, operation expense is high, effect is unstable.High frequency electric source investment It saves, effectively promote efficiency of dust collection, and there is energy-saving effect, power plant is appropriate for this transformation in the case where original electric precipitation; Wet-esp and low temperature electric precipitation all have fairly obvious dust removing effects, and can remove part SO3, wet type electricity removes Dirt also has the effects that demercuration, removes acid-mist-removing, water droplet, aerosol, stink, can also generate in use but then useless Water.Merely from the perspective of the investment and operation and maintenance in terms of dedusting, wet electric precipitation holds advantage slightly, but low temperature electric precipitation Construction period is shorter, if can be removed " white cigarette " using MGGH, the image for improving power plant has very positive work With, and if using low-level (stack-gas) economizer reduce flue-gas temperature, can while improving dust removal performance Mist heat recovering, drop Low coal consumption, effect is it is also obvious that can not still solve the problems, such as white cigarette and chimney corrosion.
It is 0.1~2.5 μm thin for partial size however, conventional high-effective dust-removing equipment such as electric precipitator and bag dust collector Particle cannot be trapped effectively, and outlet soot emissions is made to be difficult to be less than 5mg/m3, do not meet country's cleaning discharge standard.Electric precipitator It is very high greater than the efficiency of dust collection of 10 μm of particle to partial size, but when particulate matter diameter is less than 2.5 μm, efficiency of dust collection will It is remarkably decreased, dust-collecting efficiency can be lower than 90%, and in extreme circumstances, efficiency even can drop to 50% or less.It is arranged from electric precipitator Release quantity it is most be exactly 0.2~2.5 μm of fine particle.No matter bag dust collector is also the discharge in this way, how high its efficiency is Particulate matter major part partial size be both less than 2.5 μm.Statistics shows that China's industrial fumes total emission volumn in 2010 has 8,210,000 tons, master It to be ultrafine dust.Therefore, the granular material discharged control in China has entered the epoch for cutting down PM 2.5 energetically.Along with wet type electricity Route cost of investment height, system setting complexity, operating cost height is transformed in the dedusting technologies such as dedusting, so should significantly weaken cigarette Particle mixed pollutants discharge in dirt concentration of emission, control atmosphere, uses efficient, energy-efficient dedusting technology again, has become existing The important directions of stage environmental protection technology transformation.
Meanwhile the problem that the domestic generally existing exhaust gas temperature of station boiler is higher, the serious overtemperature of exhaust gas temperature not only influence The heat-economy of power plant, and influence the safe operation of air preheater.Therefore, reduce exhaust gas temperature for it is energy-saving, mention The security reliability of high boiler has important practical significance.However acid corrosion occurs for heated surface at the end of boiler in order to prevent, protects Card boiler is continuously safely operated, and in view of boiler needs the factors such as underrun, coal type change and sweep of gases dead angle, Boiler design exhaust gas temperature is much higher than the dew-point temperature of sulfuric acid vapor.The flue gas dew point temperature that China's steam coal generates 90~ 110 DEG C of range, and station boiler be averaged exhaust gas temperature be 120~130 DEG C, so just some coal burning generate heat Amount could not be utilized, as flue gas is discarded into atmospheric environment, referred to as waste heat.Boiler exhaust gas waste heat is equivalent to coal and brings into The 8%~12% of boiler heat is the maximal term in current thermal power plant boiler heat loss, this is also the master of flue gas transformation at this stage Want one of project.
However conventional generating plant flue gas integrated treatment technological transformation project transformation target often single realization wherein a certain target, and It can not accomplish to realize receipts water+dedusting+waste heat recycling integrated function simultaneously.
Meanwhile power station water treatment facilities there are certain requirements raw water temperature, it is pre- that suitable temperature is conducive to raising raw water The treatment effect of processing unit improves the operation stability and effluent quality of device.For using removing containing counter-infiltration system Salt water preparation apparatus, working efficiency are affected by water source temperature, and on the one hand low water temperature can make reverse osmosis membrane filter opening become smaller, water Viscosity becomes larger, and film water-flowing amount reduces therewith, and wastewater discharge increases;Another aspect reverse osmosis membrane filter opening, which becomes smaller, will cause equipment pressure Power rises, and plays the role of pressure to reverse osmosis membrane, influences the service life of counter-infiltration system.Under general condition, in water temperature 25-30 DEG C when, water treatment facilities, which can be done, reaches good operational efficiency.In order to reach suitable raw water temperature, conventional heating methods are main It is to heat raw water using station-service auxiliary steam, increases steam consumption and energy loss.
Summary of the invention
It is simple, energy-saving and emission-reduction that in view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of structures, environmentally protective Smoke comprehensive processing unit and its method.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of smoke comprehensive processing unit, including boiler, Back-end ductwork, deduster, air-introduced machine, desulfuration absorbing tower, phase transformation knockouts and chimney, the exhanst gas outlet of the boiler and the tail The import of portion's flue connects, and the outlet of the back-end ductwork is connected with the import of the deduster, the outlet of the deduster and The import of the air-introduced machine connects, and the outlet of the air-introduced machine is connect with the gas phase import of the desulfuration absorbing tower, the desulfurization The gaseous phase outlet on absorption tower is connect with the gas phase import of the phase transformation knockouts, the gaseous phase outlet of the phase transformation knockouts with it is described The import of chimney connects, and the condensation-water drain of the phase transformation knockouts and the condensation water inlet of the desulfuration absorbing tower pass through water pipe It is connected, the phase transformation knockouts is provided with original water inlet and raw water outlet, and the original water inlet is connected with raw water preliminary treatment dress It sets, the raw water outlet is connected with treating nature water device, and water outlet and the demineralized water preparation of the treating nature water device fill The water inlet set is connected, and the import of the water outlet and sweet-water tank of the desalination water preparation apparatus connects.
As the preferred embodiment of the present invention, the raw water preliminary treatment device includes the grid being sequentially connected in series Trash, drain grating and plate filter screen.
As the preferred embodiment of the present invention, the treating nature water device includes that the flocculation being sequentially connected in series is sunk Shallow lake and filter device.
As the preferred embodiment of the present invention, the desalination water preparation apparatus includes the ultrafiltration being sequentially connected in series (UF), reverse osmosis (RO), continuous electric desalination (EDI) or mixed bed device.
As the preferred embodiment of the present invention, the phase transformation knockouts is tube shell type structure.
As the preferred embodiment of the present invention, the phase transformation knockouts includes heat exchanger tube, tube sheet and water collector, described Heat exchanger tube is arranged on the tube sheet, and the condensation-water drain of the phase transformation knockouts is arranged on the water collector, institute It states original water inlet and raw water outlet is arranged on the tube sheet.
As the preferred embodiment of the present invention, the heat exchanger tube is multiple groups U-tube beam.
As the preferred embodiment of the present invention, the multiple groups U-tube Shu Caiyong is staggered in arrangement.
As the preferred embodiment of the present invention, the tube bank center of the multiple groups U-tube beam is away from for 20~30mm.
The present invention also provides the method for using above-mentioned smoke comprehensive processing unit processing flue gas, raw water is tentatively located by raw water Enter phase transformation knockouts after managing device removal raw water mud and impurity, after raw water temperature being promoted by the heating of phase transformation knockouts Into treating nature water device, then enter sweet-water tank after desalination water preparation apparatus, eventually enters into boiler replenishing water system;From pot The flue gas that furnace comes enters deduster after back-end ductwork stablizes flow velocity and removes large dust particle, then passes through under air inducing machine travel Desulfuration absorbing tower removes SO2, the saturated flue gas that desulfuration absorbing tower comes out enters phase transformation knockouts, with the raw water flowed in heat exchanger tube Exchange heat, in flue gas vapor in the phase transformation of fine particle surface, agglomerate, grow up, and generate thermophoresis simultaneously and diffusiophoresis is made With promoting fine grained mobile to cold tube wall under the action of temperature gradient, be attached on the liquid film of tube wall surface, finally in weight Under power effect, desulfuration absorbing tower is entered back into after water collector recycle, agglomerate through phase transformation as the liquid film of flowing is collected into Flue gas after device removing fine particle is through chimney qualified discharge.
As the preferred embodiment of the present invention, the raw water flow into phase transformation knockouts is preferably 200-300t/ H, temperature are preferably 8-15 DEG C.
As the preferred embodiment of the present invention, the flow of the flue gas come from boiler is preferably 330-370kNm3/h。
When smoke comprehensive processing unit of the invention handles flue gas, flue gas first passes through deduster removal large dust particle, so SO is removed by desulfuration absorbing tower afterwards2, desulfuration absorbing tower exit gas temperature is about at 50 DEG C, and dust content is about in 20mg/ Nm3.Saturated flue gas after desulfuration absorbing tower comes out enters phase transformation knockouts, exchanges heat, cigarette with the raw water flowed in heat exchanger tube In gas vapor in the phase transformation of fine particle surface, agglomerate, grow up, and generate thermophoresis and diffusiophoresis effect simultaneously, promote thin Grain is mobile to cold tube wall under the action of temperature gradient, is attached on the liquid film of tube wall surface, finally under the effect of gravity, with Flowing liquid film be collected into water collector.Pass through control phase transformation knockouts internal heat exchange tubes wall surface during particulate matter removing Temperature, further control saturation wet flue gas degree of transformation, combine the multiple dedustings such as wet type phase transformation condensation, cohesion, inertia Mechanism is realized and receives water+dedusting+waste heat recycling function, is finally reached outlet soot emissions lower than 2.8mg/Nm3Standard.
While smoke comprehensive processing unit of the invention handles flue gas, raw water preliminary treatment is heated by phase transformation knockouts The raw water through removing mud and other materials that device comes, enters treating nature water device after raw water temperature is risen to 25-30 DEG C, Enter sweet-water tank after desalination water preparation apparatus again, eventually enters into boiler replenishing water system.Raw water absorbs in phase transformation knockouts Fume afterheat reduces flue-gas temperature, the fine particle in efficient removal flue gas, and the water condensed is passed through water collector It send to desulfuration absorbing tower and recycles.The present invention is more efficient, energy-efficient to utilize boiler smoke, not only plays the work of dedusting environment friendly With also by the secondary use of flue gas ash removal low-temperature heat source obtained, heating water treatment facilities raw water improves the fortune of water treatment facilities Row stability and water yield greatly promote energy utilization rate, reduce energy consumption, recycle fume afterheat, improve unit comprehensively Business efficiency.
Compared with prior art, the present invention has the advantage that
It 1, is 0.1~2.5 μm for partial size relative to conventional high-effective dust-removing equipment such as electric precipitator and bag dust collector Fine particle cannot be trapped effectively, and phase transformation knockouts can promote fine particle to agglomerate, to capture, remove, make to export flue dust row Put < 2.8mg/m3, meet country's cleaning discharge standard, and can realize receipts water+dedusting+waste heat recycling function.
2, fine particle, mercury, SO3, gas of the phase transformation knockouts while absorbing fume afterheat in efficient removal flue gas The pollutants such as colloidal sol, further purifying smoke remove pollutant.
3, smoke comprehensive processing unit of the invention generates in smoke comprehensive treatment process without waste water, exhaust gas, without secondary Pollution, and since phase transformation knockouts can solve the problems, such as that fouling blockage is washed away and acid corrosion very well, it plays and saves the energy, mentions The effect of high boiler security reliability.
4, water treatment facilities raw water needs to be heated to 25-30 DEG C, and conventional method heating needs to increase energy consumption, cigarette of the invention Gas Integrated Processing Unit absorbs the low-quality Topography raw water of flue gas using phase transformation knockouts, efficiently recycles waste heat damage It loses, reduces flue-gas temperature, remove the fine particle in flue gas, and the water condensed is sent to desulfuration absorbing tower and recycles benefit With, and raw water can be heated to 25-30 DEG C by the heat of flue gas release and the latent heat of vaporization of vapor condensation, this is not only saved Water resource, improves the operation stability and water yield of water treatment facilities, and fume afterheat is efficiently utilized, and greatly improves Energy utilization rate reduces increased energy consumption in water treatment procedure, realizes environmentally protective, efficient circulation and utilizes, for thermal power plant Energy-saving and emission-reduction have great significance.
Detailed description of the invention
Fig. 1 is the flow diagram of smoke comprehensive processing unit of the invention.
Fig. 2 is the phase transformation knockouts structural schematic diagram of smoke comprehensive processing unit of the invention.
In figure, boiler 1, back-end ductwork 2, deduster 3, air-introduced machine 4, desulfuration absorbing tower 5, phase transformation knockouts 6, chimney 7, original Water preliminary treatment device 8, treating nature water device 9, desalination water preparation apparatus 10, sweet-water tank 11, heat exchanger tube 12, tube sheet 13, Water collector 14.
Specific embodiment
As shown in Figure 1 and Figure 2, smoke comprehensive processing unit of the invention, including boiler 1, back-end ductwork 2, deduster 3, draw The exhanst gas outlet of blower 4, desulfuration absorbing tower 5, phase transformation knockouts 6 and chimney 7, boiler 1 is connect with the import of back-end ductwork 2, tail The outlet of portion's flue 2 is connected with the import of deduster 3, and the outlet of deduster 3 is connect with the import of air-introduced machine 4, and air-introduced machine 4 goes out Mouth is connect with the gas phase import of desulfuration absorbing tower 5, and the gas phase import of the gaseous phase outlet and phase transformation knockouts 6 of desulfuration absorbing tower 5 connects It connects, the gaseous phase outlet of phase transformation knockouts 6 is connect with the import of chimney 7, the condensation-water drain and desulfuration absorbing tower of phase transformation knockouts 6 5 condensation water inlet is connected by water pipe, and phase transformation knockouts 6 is provided with original water inlet and raw water outlet, and original water inlet is connected with Raw water preliminary treatment device 8, raw water outlet are connected with treating nature water device 9, the water outlet and desalination for the treatment of nature water device 9 The water inlet of water preparation apparatus 10 is connected, and the water outlet of desalination water preparation apparatus 10 is connect with the import of sweet-water tank 11.
The workflow of smoke comprehensive processing unit of the invention are as follows: raw water removes original by raw water preliminary treatment device 8 After water slurry and impurity enter phase transformation knockouts 6, by phase transformation knockouts 6 heating by raw water temperature rise to 25-30 DEG C it is laggard Enter treating nature water device 9, then enter sweet-water tank 11 after desalination water preparation apparatus 10, eventually enters into boiler replenishing water system; Enter deduster 3 after back-end ductwork 2 stablizes flow velocity from the flue gas of boiler 1 and remove large dust particle, is then led in air-introduced machine 4 Draw lower by the removing of desulfuration absorbing tower 5 SO2, about at 50 DEG C, dust content about exists the exit gas temperature of desulfuration absorbing tower 5 20mg/Nm3, desulfuration absorbing tower 5 come out saturated flue gas enter phase transformation knockouts 6, exchanged with the raw water flowed in heat exchanger tube 12 Heat, in flue gas vapor in the phase transformation of fine particle surface, agglomerate, grow up, and generate thermophoresis and diffusiophoresis effect simultaneously, promote Keep fine grained mobile to cold tube wall under the action of temperature gradient, be attached on the liquid film of tube wall surface, finally makees in gravity Under, enters back into desulfuration absorbing tower 5 as the liquid film of flowing is collected into after water collector 14 and recycle, through phase transformation knockouts Flue gas after 6 removing fine particles is through 7 qualified discharge of chimney.
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail, but the present invention and not only limits In the embodiment described.
Embodiment 1
A kind of smoke comprehensive processing unit, including boiler 1, back-end ductwork 2, deduster 3, air-introduced machine 4, desulfuration absorbing tower 5, Phase transformation knockouts 6 and chimney 7, phase transformation knockouts 6 are tube shell type structure, including one group of U-tube beam heat exchanger tube 12, tube sheet 13 and receipts Water installations 14,12 material of heat exchanger tube are PTFE, and specification isAway from for 30mm, heat exchanger tube 12 uses welding technique at tube bank center It is connect with tube sheet 13, tube sheet 13 and external metallization bobbin carriage seal, and heat exchanger tube 12 is arranged on tube sheet 13, the exhanst gas outlet of boiler 1 It is connect with the import of back-end ductwork 2, the outlet of back-end ductwork 2 is connected with the import of deduster 3, the outlet of deduster 3 and air inducing The import of machine 4 connects, and the outlet of air-introduced machine 4 is connect with the gas phase import of desulfuration absorbing tower 5, the gaseous phase outlet of desulfuration absorbing tower 5 It is connect with the gas phase import of phase transformation knockouts 6, the gaseous phase outlet of phase transformation knockouts 6 is connect with the import of chimney 7, phase transformation knockouts The condensation-water drain being arranged on 6 water collector 14 is connected with the condensation water inlet of desulfuration absorbing tower 5 by water pipe, phase transformation cohesion Original water inlet and raw water outlet are additionally provided on the tube sheet 13 of device 6, original water inlet is connected with raw water preliminary treatment device 8, raw water Outlet is connected with treating nature water device 9, the water inlet phase of the water outlet and desalination water preparation apparatus 10 for the treatment of nature water device 9 Even, the water outlet of desalination water preparation apparatus 10 is connect with the import of sweet-water tank 11, and raw water preliminary treatment device 8 includes successively going here and there Join grilling trash remover, drain grating and the plate filter screen of connection, treating nature water device 9 includes the flocculation sedimentation being sequentially connected in series And filter device, desalination water preparation apparatus 10 include the ultrafiltration being sequentially connected in series, reverse osmosis, mixed bed device.
Use the smoke comprehensive processing unit handle flue gas, operating parameter are as follows: from boiler come flue gas flow be 330kNm3/ h, 50 DEG C of smoke temperature, the raw water flow into phase transformation knockouts is 200t/h, and temperature is 12 DEG C.
Operational effect: phase transformation knockouts raw water exit water temperature rises to 27 DEG C;Chimney is without white cigarette phenomenon;Raw water reaches after processing To desalination water quality standard.
Embodiment 2
A kind of smoke comprehensive processing unit, including boiler 1, back-end ductwork 2, deduster 3, air-introduced machine 4, desulfuration absorbing tower 5, Phase transformation knockouts 6 and chimney 7, phase transformation knockouts 6 are tube shell type structure, including two groups of U-tube beam heat exchanger tubes 12, tube sheet 13 and receipts Water installations 14,12 material of heat exchanger tube are PTFE, and specification isHeat exchanger tube 12 is connect using welding technique with tube sheet 13, is managed Plate 13 and external metallization bobbin carriage seal, two groups of U-tube beam heat exchanger tube in-line arrangements, and tube bank center is away from for 28mm, two groups of U-tube beams Heat exchanger tube 12 is arranged on tube sheet 13, and the exhanst gas outlet of boiler 1 is connect with the import of back-end ductwork 2, the outlet of back-end ductwork 2 It is connected with the import of deduster 3, the outlet of deduster 3 is connect with the import of air-introduced machine 4, and the outlet and desulfurization of air-introduced machine 4 absorb The gas phase import of tower 5 connects, and the gaseous phase outlet of desulfuration absorbing tower 5 is connect with the gas phase import of phase transformation knockouts 6, phase transformation knockouts 6 gaseous phase outlet is connect with the import of chimney 7, the condensation-water drain being arranged on the water collector 14 of phase transformation knockouts 6 and desulfurization The condensation water inlet on absorption tower 5 is connected by water pipe, is additionally provided with original water inlet on the tube sheet 13 of phase transformation knockouts 6 and raw water goes out Mouthful, original water inlet is connected with raw water preliminary treatment device 8, and raw water outlet is connected with treating nature water device 9, treating nature water dress It sets 9 water outlet to be connected with the water inlet of desalination water preparation apparatus 10, the water outlet and sweet-water tank of desalination water preparation apparatus 10 11 import connection, raw water preliminary treatment device 8 include grilling trash remover, drain grating and the plate filter screen being sequentially connected in series, Treating nature water device 9 includes the flocculation sedimentation being sequentially connected in series and filter device, and desalination water preparation apparatus 10 includes successively The ultrafiltration of series connection, reverse osmosis, mixed bed device.
Use the smoke comprehensive processing unit handle flue gas, operating parameter are as follows: from boiler come flue gas flow be 370kNm3/ h, 50 DEG C of smoke temperature, the raw water flow into phase transformation knockouts is 300t/h, and temperature is 15 DEG C.
Operational effect: phase transformation knockouts raw water exit water temperature rises to 26 DEG C;Chimney is without white cigarette phenomenon;Raw water reaches after processing To desalination water quality standard.
Embodiment 3
A kind of smoke comprehensive processing unit, including boiler 1, back-end ductwork 2, deduster 3, air-introduced machine 4, desulfuration absorbing tower 5, Phase transformation knockouts 6 and chimney 7, phase transformation knockouts 6 are tube shell type structure, including three groups of U-tube beam heat exchanger tubes 12, tube sheet 13 and receipts Water installations 14,12 material of heat exchanger tube are PTFE, and specification isHeat exchanger tube 12 is connected using welding technique and tube sheet 13 It connecing, tube sheet 13 and external metallization bobbin carriage seal, and three groups of U-tube beam heat exchanger tubes are staggered in arrangement arrangement, restrain center away from for 25mm, three Group U-tube beam heat exchanger tube 12 is arranged on tube sheet 13, and the exhanst gas outlet of boiler 1 is connect with the import of back-end ductwork 2, tail portion cigarette The outlet in road 2 is connected with the import of deduster 3, and the outlet of deduster 3 is connect with the import of air-introduced machine 4, the outlet of air-introduced machine 4 with The gas phase import of desulfuration absorbing tower 5 connects, and the gaseous phase outlet of desulfuration absorbing tower 5 is connect with the gas phase import of phase transformation knockouts 6, phase The gaseous phase outlet for becoming knockouts 6 is connect with the import of chimney 7, and the condensed water being arranged on the water collector 14 of phase transformation knockouts 6 goes out Mouth is connected with the condensation water inlet of desulfuration absorbing tower 5 by water pipe, is additionally provided with original water inlet on the tube sheet 13 of phase transformation knockouts 6 It is exported with raw water, original water inlet is connected with raw water preliminary treatment device 8, and raw water outlet is connected with treating nature water device 9, raw water The water outlet of pretreatment unit 9 is connected with the water inlet of desalination water preparation apparatus 10, the water outlet of desalination water preparation apparatus 10 with The import of sweet-water tank 11 connects, and raw water preliminary treatment device 8 includes the grilling trash remover being sequentially connected in series, drain grating peace Plate strainer, treating nature water device 9 include the flocculation sedimentation being sequentially connected in series and filter device, and desalination water preparation apparatus 10 wraps Include the ultrafiltration being sequentially connected in series, reverse osmosis, mixed bed device.
Use the smoke comprehensive processing unit handle flue gas, operating parameter are as follows: from boiler come flue gas flow be 370kNm3/ h, 55 DEG C of smoke temperature, the raw water flow into phase transformation knockouts is 200t/h, and temperature is 8 DEG C.
Operational effect: phase transformation knockouts raw water exit water temperature rises to 25 DEG C;Chimney is without white cigarette phenomenon;Raw water reaches after processing To desalination water quality standard.
Embodiment 4
A kind of smoke comprehensive processing unit, including boiler 1, back-end ductwork 2, deduster 3, air-introduced machine 4, desulfuration absorbing tower 5, Phase transformation knockouts 6 and chimney 7, phase transformation knockouts 6 are tube shell type structure, including four groups of U-tube beam heat exchanger tubes 12, tube sheet 13 and receipts Water installations 14,12 material of heat exchanger tube are PTFE, and specification isHeat exchanger tube 12 is connected using welding technique and tube sheet 13 It connecing, tube sheet 13 and external metallization bobbin carriage seal, and four groups of U-tube beam heat exchanger tubes are staggered in arrangement arrangement, restrain center away from for 20mm, four Group U-tube beam heat exchanger tube 12 is arranged on tube sheet 13, and the exhanst gas outlet of boiler 1 is connect with the import of back-end ductwork 2, tail portion cigarette The outlet in road 2 is connected with the import of deduster 3, and the outlet of deduster 3 is connect with the import of air-introduced machine 4, the outlet of air-introduced machine 4 with The gas phase import of desulfuration absorbing tower 5 connects, and the gaseous phase outlet of desulfuration absorbing tower 5 is connect with the gas phase import of phase transformation knockouts 6, phase The gaseous phase outlet for becoming knockouts 6 is connect with the import of chimney 7, and the condensed water being arranged on the water collector 14 of phase transformation knockouts 6 goes out Mouth is connected with the condensation water inlet of desulfuration absorbing tower 5 by water pipe, is additionally provided with original water inlet on the tube sheet 13 of phase transformation knockouts 6 It is exported with raw water, original water inlet is connected with raw water preliminary treatment device 8, and raw water outlet is connected with treating nature water device 9, raw water The water outlet of pretreatment unit 9 is connected with the water inlet of desalination water preparation apparatus 10, the water outlet of desalination water preparation apparatus 10 with The import of sweet-water tank 11 connects, and raw water preliminary treatment device 8 includes the grilling trash remover being sequentially connected in series, drain grating peace Plate strainer, treating nature water device 9 include the flocculation sedimentation being sequentially connected in series and filter device, and desalination water preparation apparatus 10 wraps Include the ultrafiltration being sequentially connected in series, reverse osmosis, mixed bed device.
Use the smoke comprehensive processing unit handle flue gas, operating parameter are as follows: from boiler come flue gas flow be 350kNm3/ h, 53 DEG C of smoke temperature, the raw water flow into phase transformation knockouts is 220t/h, and temperature is 12 DEG C.
Operational effect: phase transformation knockouts raw water exit water temperature rises to 26 DEG C;Chimney is without white cigarette phenomenon;Raw water reaches after processing To desalination water quality standard.

Claims (10)

1. a kind of smoke comprehensive processing unit, including boiler, back-end ductwork, deduster, air-introduced machine, desulfuration absorbing tower, phase transformation are solidifying Poly- device and chimney, the exhanst gas outlet of the boiler are connect with the import of the back-end ductwork, the outlet of the back-end ductwork and institute State deduster import be connected, the outlet of the deduster is connect with the import of the air-introduced machine, the outlet of the air-introduced machine and The gas phase import of the desulfuration absorbing tower connects, the gas phase of the gaseous phase outlet of the desulfuration absorbing tower and the phase transformation knockouts into Mouth connection, the gaseous phase outlet of the phase transformation knockouts are connect with the import of the chimney, and the condensed water of the phase transformation knockouts goes out Mouth is connected with the condensation water inlet of the desulfuration absorbing tower by water pipe, which is characterized in that the phase transformation knockouts is provided with original Water inlet and raw water outlet, the original water inlet are connected with raw water preliminary treatment device, and it is pre- that the raw water outlet is connected with raw water The water outlet of processing unit, the treating nature water device is connected with the water inlet of desalination water preparation apparatus, the demineralized water system The import of the water outlet and sweet-water tank of standby device connects.
2. smoke comprehensive processing unit according to claim 1, which is characterized in that the raw water preliminary treatment device packet Include the grilling trash remover, drain grating and plate filter screen being sequentially connected in series.
3. smoke comprehensive processing unit according to claim 1, which is characterized in that the treating nature water device includes The flocculation sedimentation and filter device being sequentially connected in series.
4. smoke comprehensive processing unit according to claim 1, which is characterized in that the desalination water preparation apparatus includes Ultrafiltration, reverse osmosis, continuous electric desalination or the mixed bed device being sequentially connected in series.
5. smoke comprehensive processing unit according to claim 1, which is characterized in that the phase transformation knockouts is shell-and-tube Structure.
6. smoke comprehensive processing unit according to claim 1, which is characterized in that the phase transformation knockouts includes heat exchange Pipe, tube sheet and water collector, the heat exchanger tube are arranged on the tube sheet, the condensation-water drain setting of the phase transformation knockouts On the water collector, the original water inlet and raw water outlet are arranged on the tube sheet.
7. smoke comprehensive processing unit according to claim 6, which is characterized in that the heat exchanger tube is multiple groups U-tube Beam, the multiple groups U-tube Shu Caiyong are staggered in arrangement, and the tube bank center of the multiple groups U-tube beam is away from for 20~30mm.
8. using the method for smoke comprehensive processing unit processing flue gas described in claim 1, which is characterized in that raw water is by former Water preliminary treatment device enters phase transformation knockouts after removing raw water mud and impurity, is heated by phase transformation knockouts by raw water temperature Degree enters treating nature water device after being promoted, then enters sweet-water tank after desalination water preparation apparatus, eventually enters into boiler replenishing water System;The flue gas come from boiler enters deduster after back-end ductwork stablizes flow velocity and removes large dust particle, then in air-introduced machine Traction is lower to remove SO by desulfuration absorbing tower2, the saturated flue gas that desulfuration absorbing tower comes out enters phase transformation knockouts, in heat exchanger tube The raw water of flowing exchanges heat, in flue gas vapor in the phase transformation of fine particle surface, agglomerate, grow up, and generate thermophoresis simultaneously It is acted on diffusiophoresis, promotes fine grained mobile to cold tube wall under the action of temperature gradient, be attached to the liquid film of tube wall surface On, finally under the effect of gravity, desulfuration absorbing tower entered back into after water collector recycle as the liquid film of flowing is collected into, Flue gas after phase transformation knockouts removes fine particle is through chimney qualified discharge.
9. the method for processing flue gas according to claim 8, which is characterized in that the raw water stream into phase transformation knockouts Amount is 200-300t/h, and temperature is 8-15 DEG C.
10. the method for processing flue gas according to claim 8, which is characterized in that the flow of the flue gas come from boiler For 330-370kNm3/h。
CN201810811395.1A 2018-07-23 2018-07-23 A kind of smoke comprehensive processing unit and its method Pending CN109059025A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110044664A (en) * 2019-04-30 2019-07-23 江苏大学 A kind of particle sampling device based on thermophoretic effect

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110044664A (en) * 2019-04-30 2019-07-23 江苏大学 A kind of particle sampling device based on thermophoretic effect

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