One kind carrying acting type wet static dedusting demisterTechnical field
The present invention relates to technical field of environment protection equipment more particularly to one kind carrying acting type wet static dedusting demister.
Background technology
In recent years, China central and east persistently meets with haze, the PM in the formation and air of haze2.5Content is inseparable, stateInside and outside result of study shows coal-burning power plant's wet desulfurization system almost without removal PM2.5The ability of particulate matter, to mercury and SO3GasThe removing of colloidal sol etc. is also extremely limited, causes flue dust often to occur phenomena such as blue smoke, gypsum rain, seriously polluting environment, endangers peopleBody health.
State Council in 2011《National environmental protection " 12th Five-Year Plan " is planned》It is required that：In the Beijing-Tianjin wing, the Yangtze River Delta and Pearl River Delta etc.Carry out ozone, fine particulates (PM in region2.5) etc. pollutant monitorings.On 2 29th, 2012, State Council held standing meeting,Publication is asked newly to revise《Ambient air quality》By PM2.5It is included in regular air quality evaluation.As country is to atmosphere pollutionThe raising that object emission control requires, new fossil-fuel power plant atmospheric pollutant emission standard (GB13223-2011) was on January 1st, 2012It is formal to implement.New emission standard requires all to be greatly improved to flue dust, sulfur dioxide, nitrogen oxidation emission control.In order to fullThe new discharge standard of foot and solve the problems, such as current power plant's generally existing gypsum rain, there is an urgent need to matched system and equipmentTo handle PM2.5, blue smoke and the problems such as gypsum rain.Into 2014, " minimum discharge " proposed successively in various regions, 2014 byNational Development and Reform Committee, Chinese Ministry of Environmental Protection, National Energy Board's dispatch《No. 2093》It is recommended that the index of fire coal boiler fume minimum discharge is SO2≤35mg/Nm3, NOx≤50mg/Nm3, flue dust≤10mg/Nm3.To reach minimum discharge index, to increase after wet desulphurizationWet static dedusting demister, to shorten flow, the form of outlet under upper air can be used in wet static dedusting demister, stillThis structure can make the water droplet to flow downward that dirty flue gas entrainment pole plate polar curve is collected.Contain inorganic salts, again in these water dropletsThe PM such as metal, dust2.5Substance, the flue dust index of flue gas emission can be influenced, while the plume white haze of discharge can be made to thicken.
Invention content
The invention reside in deficiency, provide a kind of to realize desulfurization, depth dedusting, depth simultaneously the shortcomings that overcoming the prior artDegree removal flue gas moisture multiple action and simple in structure carry acting type wet static dedusting demister.
In order to achieve the above object, the present invention uses following technical scheme：One kind carrying acting type wet static dedusting demisting dressIt sets, including middle part separate type tower body, which is equipped with smoke inlet, gas system, tempering system, backwash successively from top to bottomSystem, high-voltage electricity place, exhanst gas outlet and drain pipe；The high-voltage electricity place is powered by anode system and cathod system and is generated；The tower body includes top tower body and bottom tower body, and the high voltage electric field distinguishes point being distributed between top tower body and bottom column bottomFrom section；The acting type wet static dedusting demister that carries further includes an adjustable gas liquid separation system；The adjustable gas-liquidPiece-rate system is set in the exhanst gas outlet.
Further, the adjustable gas liquid separation system be by a top plate with mutually closely connect and vertical be successively disposed aroundThe tool that three pieces of water removal baffles of top plate periphery are formed is fixed in bottom tower body there are two the semi-surrounding frame structure in opening faceTower wall and bottom of tower, and one of frame structure opening face face exhanst gas outlet.Adjustable gas liquid separation system is surrounded onExhanst gas outlet, to make flue gas that must first pass through any water removal baffle of adjustable gas liquid separation system before exhanst gas outlet discharge,It is handled by gas-liquid separation to ensure that flue gas discharge is preceding, reduces flue gas water content.
Further, the water removal baffle includes skeleton and the block water plate that tilts the multi-disc being fixed on skeleton and be mutually parallel,And the block water plate tilt adjustable.Multi-disc block water plate is fixed by skeleton, forms the gear that angle of inclination is consistent, is mutually parallelWater-bound, under upper air in the wet static dedusting demister of outlet, flue gas can flow part pole plate polar curve down smallDrop is taken away, and the droplet being mingled in smoke outlet, flue gas is mutually collided with block water plate, and coalescence is acted at big by coalescenceDrop stays on block water plate, and is discharged from the drain pipe of wet method electrostatic collector demister bottom along block water plate, and clean dryDry flue gas is discharged from exhanst gas outlet.The angle of inclination of the block water plate can be adjusted by connector (such as bolt), to basisResistance, index request and the exhanst gas outlet flue gas of waste gas pollution control and treatment system fly the inclination angle that block water plate is adjusted flexibly in waterDegree, ensures better gas-liquid separation effect.
Further, the block water plate angle with horizontal plane is 50 °~70 °.Inclining for block water plate is usually adjusted in the rangeRake angle, the angle of inclination within the scope of this can increase the probability of droplet and block water plate collision in flue gas, to ensure gas-liquidSeparating effect.
Preferably, the block water plate angle with horizontal plane is 60 °.The gas-liquid separation effect at the angle of inclination is best.
Further, the anode system includes polylith anode plate.
Further, the anode plate is made of electroconductive frp.
Further, the cathod system includes multiple insulator chambers and cathode line.
Further, the tempering system includes quenched spraying layer, which is equipped with multiple atomizers.The tuneMatter system forms atomised spray to adsorb dust by quenched spraying layer, reduces the specific resistance of exhaust gas dust.
Further, the backwashing system includes at least one layer of atomized water spraying layer, and the atomized water spraying layer is equipped withMultiple atomizers.Atomized water is sprayed onto the company of being formed on the anode plate of anode system by atomized water spraying layer by the backwashing systemThe grit of capture is washed away to bottom of device, is drained into the pond below device through drain pipe by continuous moisture film, flowing moisture film.
Compared with the prior art, one kind of the invention carries acting type wet static dedusting demister, by exhanst gas outletInterior setting adjustable gas liquid separation system makes flue gas, by more abundant thoroughly gas-liquid separation processing, avoid containing before dischargeThere are the PM such as inorganic salts, heavy metal, dust2.5The moisture of substance is brought by flue gas in chimney, further net to make flue gas obtainChange；Also the visible smog length and thickness for making chimney reduce.In addition, the adjustable gas liquid separation system can be easily originalIt installs additional on wet static dedusting demister, is transformed on existing apparatus convenient for enterprises and institutions, save cost.
In order to better understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Description of the drawings
Fig. 1 is the structural schematic diagram for carrying acting type wet static dedusting demister of the present invention
Fig. 2 is the mounting structure schematic diagram of adjustable gas liquid separation system of the present invention
Fig. 3 is the A of Fig. 2 to schematic diagram
Fig. 4 is the structural schematic diagram of adjustable gas liquid separation system of the present invention
Fig. 5 is the structural schematic diagram of water removal baffle of the present invention
Fig. 6 is the B of Fig. 5 to schematic diagram
Specific implementation mode
Referring to Fig. 1, its structural schematic diagram for carrying acting type wet static dedusting demister for the present invention.The present invention'sOne kind carrying acting type wet static dedusting demister, including a middle part separate type tower body；The tower body includes top tower body 91 and bottomPortion's tower body 92, and separation one end interval therebetween.It is equipped with smoke inlet 10, gas system inside the tower body successively from top to bottom20, tempering system 30, backwashing system 40, high-voltage electricity place 50, exhanst gas outlet 60 and drain pipe 70；The exhanst gas outlet 60 is openedSet on the side of bottom tower body 92, the drain pipe 70 is set to the bottom of bottom tower body 92.One is equipped in the exhanst gas outlet 60Adjustable gas liquid separation system 80.Flue gas enters the tower body from smoke inlet 10, and passes through gas system 20, quenched system successivelySystem 30, backwashing system 40, after 50 dedusting demisting of high-voltage electricity place, by after 80 gas-liquid separation of adjustable gas liquid separation system fromExhanst gas outlet 60 is discharged, and the waste liquid generated during wet method electrostatic collector demisting is discharged from drain pipe 70.
Specifically, the high-voltage electricity place 50 leads to high voltage direct current by anode system 51 and cathod system 52 and generates, the heightPiezoelectric field distinguishes the segregation section being distributed between top tower body and bottom column bottom.The anode system 51 is formed by polylith anode plate,Preferably, the anode plate is made of electroconductive frp.The cathod system 52 includes more cathode lines 521 and multiple insulatorsRoom 522.The tempering system 30 includes quenched spraying layer, which is equipped with multiple atomizers.The backwashSystem 40 includes at least one layer of atomized water spraying layer, and the atomized water spraying layer is equipped with multiple atomizers.
Please refer to Fig. 2~6, wherein Fig. 2 is that the mounting structure of adjustable gas liquid separation system of the present invention showsIt is intended to；Fig. 3 is the A of Fig. 2 to schematic diagram；Fig. 4 is the structural schematic diagram of adjustable gas liquid separation system of the present invention；Fig. 5For the structural schematic diagram of water removal baffle of the present invention；Fig. 6 is the B of Fig. 5 to schematic diagram.The adjustable gas liquid separation system80 is connects and vertical peripheral three pieces of top plate 81 that are disposed around remove water what baffles 82 were formed successively by a top plate 81 with mutually closeTool is fixed in tower wall and the bottom of tower of bottom tower body 92 there are two the semi-surrounding frame structure in opening face, and the frame structureOne of opening face face exhanst gas outlet 60.After flue gas leaves high-voltage electricity place 50, it is discharged after any water removal baffle 82Exhanst gas outlet 60.
Specifically, the water removal baffle 82 includes skeleton 821 and tilts what the multi-disc being fixed on skeleton 821 was mutually parallelBlock water plate 822.The angle of inclination of the block water plate 822 can be adjusted by connector (such as bolt), to according to waste gas pollution control and treatment systemThe angle of inclination of block water plate is adjusted flexibly in the resistance of system, the winged water of flue gas of index request and exhanst gas outlet 60, ensuresBetter gas-liquid separation effect.In order to ensure preferable gas-liquid separation effect, 822 angle with horizontal plane b of the block water plate is 50It is adjusted within the scope of~70 °.Preferably, angle b is adjusted to 60 °, the gas-liquid separation effect at this angle of inclination is best.Flue gas fromAfter opening high-voltage electricity place 50, flue gas can take away segment anode plate toward dirty droplet, in smoke outlet, due to top plate 81Blocking, can only pass through from any water removal baffle 82；Since the block water plate 822 on water removal baffle 82 is obliquely installed, pressed from both sides in flue gasMiscellaneous droplet collides with block water plate 822, is stayed on block water plate 822 at big drop to generate coalescence effect coalescence, andIt is discharged from the drain pipe 70 of wet method electrostatic collector demister bottom along block water plate 822, makes inorganic salts, the huge sum of money in water dropletThe PM2.5 substances such as category, dust are retained down, and not only make flue gas more dry, while reducing the harmful substance in flue gas, are madeFlue gas obtains the purification of deeper.
Flue gas to be clean is flowed into from into smoke inlet 10 in tower body, after gas system 20, the flue gas that is evenly distributedInto tempering system 30；The quenched spraying layer of tempering system 30 adsorbs the dust in flue gas to flue gas spray atomizing water, atomized water,Reduce the specific resistance of dust in flue gas；The water mist for being adsorbed with dust later enters high-voltage electricity place 50, and water mist is under electric field actionChargedization, and be further atomized；At this point, electrically charged water mist mutually collides coalescence with pm2.5 grits, under coulomb force effect altogetherIt simultaneously becomes trapped with anode plate is tended to, form flow and carries flue dust secretly and flow downward out high-voltage electricity place along anode plate and cathode line.It is continuous to be formed on anode plate that atomized water is periodically directly sprayed to anode plate by the atomized water spraying layer of backwashing system 40The grit of accumulation is washed away to the bottom of device, is drained into the pond below device through drain pipe 70 by moisture film, flowing water film.ThroughThe flue gas crossed after dedusting demisting enters in adjustable gas liquid separation system 80, since wet static dedusting demister is upper airLower outlet type, flue gas can take away segment anode plate toward dirty droplet, the droplet and adjustable gas being mingled in flue gasBlock water plate 822 on liquid separation system collides, and stays on block water plate 822, makes at big drop to generate coalescence effect coalescenceThe PM such as inorganic salts, heavy metal, dust in water droplet2.5Substance is retained down, finally, by the clean of depth dedusting demisting water removalNeat stress is discharged from exhanst gas outlet 60.Since its structure is outlet under upper air, all anode plates and cathode line be chronically at byThe water mist of capture forms the state that moisture film is washed away, and overcomes the withered knot in anode plate cathode line top of air outlet structure in lower air inletDirt, the shortcomings that making removal rate decline.
Compared with the prior art, one kind of the invention carries acting type wet static dedusting demister, by exhanst gas outletSetting adjustable gas liquid separation system 80 in 60 makes flue gas, by more abundant thoroughly gas-liquid separation processing, be kept away before dischargeExempt from containing PM such as inorganic salts, heavy metal, dusts2.5The moisture of substance is brought by flue gas in chimney, to make flue gas obtain furtherGround purifies；Also the visible smog length and thickness for making chimney reduce.In addition, the adjustable gas liquid separation system can easily existIt installs additional on original wet static dedusting demister, is transformed on existing apparatus convenient for enterprises and institutions, save cost.
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pairThe limitation of the present invention, protection scope of the present invention should be subject to claim limited range.For the artFor those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these changeProtection scope of the present invention is also should be regarded as into retouching.