CN205517261U - Minimum discharge of many pollutants of industry coal fired boiler flue gas is desorption system in coordination - Google Patents

Minimum discharge of many pollutants of industry coal fired boiler flue gas is desorption system in coordination Download PDF

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Publication number
CN205517261U
CN205517261U CN201620111956.3U CN201620111956U CN205517261U CN 205517261 U CN205517261 U CN 205517261U CN 201620111956 U CN201620111956 U CN 201620111956U CN 205517261 U CN205517261 U CN 205517261U
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China
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flue gas
gas
blade
stem
tower body
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CN201620111956.3U
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Chinese (zh)
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李宇翔
刘洪波
温超强
黄秀灯
陈俊杰
聂嘉杰
胡满深
陈嘉伟
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Jiangmen City Is With Power Environmental Protection Technology Co Ltd
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Jiangmen City Is With Power Environmental Protection Technology Co Ltd
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Abstract

The utility model provides a minimum discharge of many pollutants of industry coal fired boiler flue gas is desorption system in coordination, includes gaseous pollutant desorption system and the aerosol attitude pollutant desorption system that is connected through flue gas pipeline and boiler, aerosol attitude pollutant desorption system includes dust collector and intensive dust removal defogging device, dust collector is electrostatic precipitator or sack cleaner, reinforce dust removal defogging device for carrying effect type wet -type electrostatic precipitator defogging device, it be middle part disconnect -type tower body structure, and top -down is equipped with in proper order that the flue gas enters the mouth, all gas system, quenching and tempering system, backpurge system, high -voltage electric field district, exhanst gas outlet and fluid -discharge tube in this tower body, the high -voltage electric field district is produced by anode system and cathode system circular telegram, the tower body includes top tower body and bottom tower body, high -voltage electric field distinguishes the segregation section of cloth in at the bottom of top tower body and the bottom tower between, still be equipped with an adjustable gas -liquid separation in the exhanst gas outlet. The utility model discloses the operation is stable, the sexual valence relative altitude.

Description

A kind of industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system
Technical field
This utility model belongs to atmosphere pollution removing field, particularly relates to a kind of ultralow row of industry coal-boiler flue gas multiple pollutant Put cooperation-removal system.
Background technology
The diastrous weathers such as in recent years, air environmental pollution problem is increasingly serious, the haze of big and medium-sized cities, acid rain take place frequently, coal-fired The pollutant of discharge are to cause one of boisterous root.But the energy resource structure supply pattern that China is based on coal is in following phase When essence being occurred to change in the long time, at China's Past 30 Years, coal accounts for primary energy production and consumption total amount always 70%, therefore, pollution that caused by coal burning thing emission problem is always focus of attention.
" Guangdong Province's prevention and control of air pollution action scheme (2014-2017) " from Energy restructuring, central heating construction, The aspects such as power economized boiler popularization all propose new requirement, country's " emission standard of air pollutants for boilers " to Pollution of Boiler regulation (GB13271-2014) (key area discharged from coal-fired boiler limits, fire coal boiler fume discharge to be proposed tightened up discharge standard Value: flue dust≤30mg/Nm3、SO2≤200mg/Nm3、NOx≤200mg/Nm3With mercury and mercuric compounds≤0.05mg/Nm3)。 Entering 2014, " minimum discharge " proposes successively in various places, and 2014 by National Development and Reform Committee, Chinese Ministry of Environmental Protection, National Energy Board's dispatch " No. 2093 " advise, the index of fire coal boiler fume minimum discharge is SO2≤35mg/Nm3, NOx≤50mg/Nm3, cigarette Dirt≤10mg/Nm3
According to the planning of " Guangdong Province's Pollution of Boiler regulation embodiment (2015-2018) ", Guangdong Province in 2014 various places environmental protection After local boiler inventory is cleared up by department, result shows, within 2015, the whole province has 12681, boiler, wherein coal-burning boiler 4050 Platform, needs the nearlyest 2500 of the coal-burning boiler administered.Visible, the middle and small burn coal boiler having a large capacity and a wide range is badly in need of flue gas and is proposed mark transformation Technology is to reach up-to-date GB.If above coal-burning boiler uses enterprise all to carry out fire coal changes combustion gas, local finance can be had a strong impact on Income and population-employment, caused economic problems further to trigger social problem by environmental issue.
Comprehensive documents and materials at present, flue gas minimum discharge technology path both domestic and external mainly has two kinds: route one: Collaborative Control road Line: low low temp. electric dedusting technology is that core flue gas Collaborative Control typical technology route is: (SCR i.e. selects equipment for denitrifying flue gas Property is catalytic-reduction denitrified) → heat regenerator (FGC) → low low temp. electric cleaner unit → wet desulfurization of flue gas by limestone-gypsum method device (WFGD) → wet electrical dust precipitator (WESP, optional installation) → smoke re-heater (FGR, optional installation).Road Line two: end treatment: on the basis of conventional processing routes, has installed wet-esp (WESP) additional, and it is arranged on desulfurization After tower (FGD).It is pointed out that the flue gas minimum discharge improvement mainly for large-sized boilers such as thermal power plants of both routes, The technical case of rarely seen industry coal-boiler particularly middle and small burn coal boiler and case history.
Utility model content
This utility model is that the shortcoming overcoming prior art is with not enough, it is provided that the industrial coal that a kind of cost performance is high, stable Boiler smoke multi-pollutant minimum discharge cooperation-removal system.
In order to achieve the above object, this utility model is by the following technical solutions: a kind of industry coal-boiler flue gas multiple pollutant surpasses Low emission cooperation-removal system, gaseous contaminant removing system and aerosolized including being connected with boiler by flue are polluted Thing removing system;Described aerosolized pollutant removing system includes dust arrester and intensified dust removal demister;Described dedusting fills It is set to electrostatic precipitator or sack cleaner;Described intensified dust removal demister for carrying acting type wet static dedusting demister, its For middle part separate type housing structure, this tower body is sequentially provided with smoke inlet, all gas system, tempering system, recoil from top to bottom Wash system, high-tension electricity place, exhanst gas outlet and discharging tube;Described high-tension electricity place is energized by anode system and cathod system and produces; Described tower body includes top tower body and bottom tower body, and described high voltage electric field is distinguished to be distributed between top tower body with bottom tower body and separated Section;An adjustable gas liquid separating apparatus it is additionally provided with in described exhanst gas outlet.
Compared to prior art, a kind of industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system of the present utility model, Being capable of industry coal-boiler flue gas multiple pollutant minimum discharge index, the flue gas of discharge can reach following standard: flue dust≤ 10mg/Nm3、SO2≤35mg/Nm3、NOx≤50mg/Nm3With mercury and mercuric compounds≤0.03mg/Nm3, not only it is far below Existing industry coal-boiler emission limit, and system run all right, cost performance are high, are especially suitable for medium small boiler, can be square Just install additional on existing flue gas purifying equipment and transform.
Further, described adjustable gas liquid separating apparatus is for be located at top board by a top board with mutual compact siro spinning technology the most vertical enclosing The semi-surrounding frame structure with two opening surfaces that peripheral three pieces are formed except water baffle plate, its be fixed in bottom tower body tower wall and At the bottom of tower, and one of them opening surface of this frame structure is just to exhanst gas outlet;Described include that skeleton is fixed on inclination except water baffle plate The block water plate that multi-disc on skeleton is parallel to each other, and described block water plate tilt adjustable.Multi-disc block water plate is fixed by skeleton, Forming the water-retaining structure that angle of inclination is consistent, be parallel to each other, that gives vent to anger under upper air carries acting type wet static dedusting demister In, segment anode plate can be taken away by flue gas toward dirty droplet, the droplet being mingled with in smoke outlet, flue gas and dash Sheet mutually collides, and becomes big drop to stay on block water plate by coalescence effect coalescence, and removes mist along block water plate from wet method electrostatic collector The discharging tube of bottom of device is discharged, and the flue gas of clean dried is discharged from exhanst gas outlet.The angle of inclination of described block water plate can be passed through Connector (such as bolt) adjusts, thus flies according to resistance, index request and the exhanst gas outlet flue gas of smoke gas treatment system The water yield is adjusted flexibly the angle of inclination of block water plate, it is ensured that preferably gas-liquid separation effect.
Further, described block water plate and horizontal plane angle are 50 °~70 °.Generally adjust the inclination of block water plate within the range Angle, the angle of inclination in the range of being somebody's turn to do can increase the probability of the droplet in flue gas and block water plate collision, thus ensure gas-liquid separation Effect.
Further, described gaseous contaminant removing system includes denitrification apparatus and desulfurizer;Described denitrification apparatus is for being located at pot SCR (SCR) denitrification apparatus between stove and dust arrester;Described desulfurizer is that three-phase turbulent current barrel efficiently takes off Sulfur gas wash tower, it is located between dust arrester and intensified dust removal demister, its be sequentially provided with from the bottom up leakage fluid dram, smoke inlet, Pretreatment spray equipment, all gas accelerator, turbulent flow liquid film generating means, after-treatment spray equipment, demister and smoke evacuation Mouthful;Described turbulent flow liquid film generating means is made up of urceolus and stem stem;Described urceolus is sheathed on outside stem stem, and at urceolus and stem stem Between be tiltedly installed with blade.
Further, described blade surface is 50 °~70 ° with the angle of horizontal plane;Described blade quantity is 10~20, and Overlapping area between blade accounts for the 30%~60% of blade total surface area;Described stem stem diameter with the ratio of outer barrel diameter is 1/6~1/3.
Further, described after-treatment spray equipment includes the spraying layer of 1~3 layer of arrangement in upright arrangement;Described spraying layer includes feed flow Pipe and the multiple heavy caliber conical nozzles being located on feed pipe.The number of plies of spraying layer determines according to the sulfur dioxide concentration of raw flue gas, If sulfur dioxide concentration is less than 1000mg/Nm3, then one layer of spraying layer is set;If sulfur dioxide concentration is 1000~1400mg/Nm3In the range of, then two-layer spraying layer is set;If sulfur dioxide concentration is higher than 1400mg/Nm3, then three layers of spraying layer are set.
As another embodiment of the present utility model, described gaseous contaminant removing system includes being located at fume pipe at boiler export SNCR denitration device in road and the synchronized desulfuring and denitrifying apparatus being located between dust arrester and intensified dust removal demister;Described Synchronized desulfuring and denitrifying apparatus includes passing sequentially through air-introduced machine and the desulphurization denitration tower that flue connects;Described desulphurization denitration tower under Up it is sequentially provided with leakage fluid dram, smoke inlet, all gas accelerator, the first spraying layer, turbulent flow liquid film generating means, after-treatment Spray equipment, demister and exhaust opening;Flue gas quenching dress it is provided with in flue between described dust arrester and described air-introduced machine Put;Being provided with gas mixing reactor in flue between described air-introduced machine and desulphurization denitration tower, it is circumscribed with an ozone and occurs Device.
Further, described gas mixing reactor is a blade structure, and it is made up of urceolus and stem stem;Described urceolus is sheathed on Outside stem stem, and between urceolus and stem stem, it is tiltedly installed with blade;Described blade surface is 50 ° with the angle of perpendicular ~70 °;Described blade quantity is 5~15, and the overlapping area between blade accounts for the 10%~30% of blade total surface area;Described Stem stem diameter is 1/6~1/3 with the ratio of outer barrel diameter.This setting can ensure that flue gas and ozone are sufficiently mixed uniformly, is greatly improved NO and the reaction rate of ozone.
As another embodiment of the present utility model, described gaseous contaminant removing system is synchronized desulfuring and denitrifying apparatus, and it sets Between dust arrester and intensified dust removal demister, including passing sequentially through air-introduced machine and the desulphurization denitration tower that flue connects; Described desulphurization denitration tower is sequentially provided with leakage fluid dram, smoke inlet, all gas accelerator, the first spraying layer, turbulent flow liquid film from the bottom up Generating means, after-treatment spray equipment, demister and exhaust opening;Fume pipe between described dust arrester and described air-introduced machine Flue gas chilling apparatus it is provided with in road;Gas mixing reactor it is provided with in flue between described air-introduced machine and desulphurization denitration tower, It is circumscribed with an ozone generating-device.
Further, described gas mixing reactor is a blade structure, and it is made up of urceolus and stem stem;Described urceolus is sheathed on Outside stem stem, and between urceolus and stem stem, it is tiltedly installed with blade;Described blade surface is 50 ° with the angle of perpendicular ~70 °;Described blade quantity is 5~15, and the overlapping area between blade accounts for the 10%~30% of blade total surface area;Described Stem stem diameter is 1/6~1/3 with the ratio of outer barrel diameter.This setting can ensure that flue gas and ozone are sufficiently mixed uniformly, is greatly improved NO and the reaction rate of ozone.
In order to be more fully understood that and implement, describe this utility model below in conjunction with the accompanying drawings in detail.
Accompanying drawing explanation
Fig. 1 is the structure diagram of the industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system described in embodiment 1
Fig. 2 is the structural representation of the three-phase turbulent current barrel efficient desulfurizing and dust collecting tower described in embodiment 1
Fig. 3 is the structural representation of the turbulent liquid film generating means described in embodiment 1
Fig. 4 be the turbulent liquid film generating means described in embodiment 1 the structural representation of blade
Fig. 5 is the structural representation carrying acting type wet static dedusting demister described in the utility model
Fig. 6 is the mounting structure schematic diagram of adjustable gas liquid separation system described in the utility model
Fig. 7 is that the A of Fig. 6 is to schematic diagram
Fig. 8 is the structural representation of adjustable gas liquid separation system described in the utility model
Fig. 9 is described in the utility model except the structural representation of water baffle plate
Figure 10 is that the B of Fig. 9 is to schematic diagram
Figure 11 is the structure diagram of the industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system described in embodiment 2
Figure 12 is the structural representation of the gas mixing reactor described in embodiment 2
Figure 13 is the structural representation of the desulphurization denitration tower described in embodiment 2
Figure 14 is the structure diagram of the industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system described in embodiment 3
Detailed description of the invention
Embodiment 1
Referring to Fig. 1, it is the industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system described in the present embodiment Structural representation.A kind of industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system of the present embodiment, including with pot It is efficient that stove 800 passes sequentially through SCR denitration device 110 that flue 700 connects, electrostatic precipitator 200, three-phase turbulent current barrel Desulfurized dust collection column 300 and carry acting type wet static dedusting demister 400.Flue gas passes through flue the most afterwards from boiler 800 700 sequentially pass through SCR denitration device 110, electrostatic precipitator 200, three-phase turbulent current barrel efficient desulfurizing and dust collecting tower 300 and put forward acting type After wet static dedusting demister 400 comprehensive decontamination, discharge from chimney 900.
Specifically, please refer to Fig. 2, it is the structural representation of the three-phase turbulent current barrel efficient desulfurizing and dust collecting tower described in embodiment 1 Figure.Described three-phase turbulent current barrel efficient desulfurizing and dust collecting tower 300 includes tower body 310;Described tower body 310 row of being sequentially provided with from the bottom up Liquid mouth 390, smoke inlet 320, pretreatment spray equipment 330, all gas accelerator 340, turbulent flow liquid film generating means 350, After-treatment spray equipment 360, demister 370 and exhaust opening 380.It is internal that flue gas enters tower body 310 from smoke inlet 320, Sequentially pass through all gas accelerator 340, turbulent flow liquid film generating means 350 and demister 370 after, discharge from exhaust opening 380. Doctor solution is sprayed into tower body 310 inside and takes off flue gas by described pretreatment spray equipment 330 and after-treatment spray equipment 360 Sulphuring treatment, is expelled in tower outer circulation pond with leakage fluid dram 390 below tower body 310 of the liquid of impurity after desulfurization.
Specifically, please refer to Fig. 3 and Fig. 4, wherein, Fig. 3 is the knot of the turbulent liquid film generating means described in the present embodiment Structure schematic diagram;Fig. 3 be the turbulent liquid film generating means described in the present embodiment the structural representation of blade.Described turbulent flow liquid film Generating means 350 is made up of urceolus 351, blade 352 and stem stem 353;It is outside that described urceolus 351 is sheathed on stem stem 353, And described blade 352 tilts to be installed between urceolus 351 and stem stem 353, blade 352 surface is with the horizontal 50 °~70 ° inclinations Angle.Described blade 352 quantity is 10~20, and the overlapping area between blade accounts for the 30%~60% of blade total surface area;Institute The ratio stating stem stem 353 diameter and urceolus 351 diameter is 1/6~1/3.
Further, described after-treatment spray equipment 360 includes the spraying layer of 1~3 layer of arrangement in upright arrangement.The number of plies of spraying layer according to The sulfur dioxide concentration of raw flue gas determines, if sulfur dioxide concentration is less than 1000mg/Nm3, then one layer of spraying layer is set;If Sulfur dioxide concentration is 1000~1400mg/Nm3In the range of, then two-layer spraying layer is set;If sulfur dioxide concentration is higher than 1400mg/Nm3, then three layers of spraying layer are set.In the present embodiment after-treatment spray equipment 360 include the first spraying layer 361, Second spraying layer 362 and the 3rd spraying layer 363, and each spraying layer includes feed pipe and the multiple heavy calibers being located on feed pipe Conical nozzle.The aperture of this bigbore conical nozzle is 1.5~2.5 cun, and it can avoid doctor solution to be blocked in shadow in nozzle inner walls Ring the supply of doctor solution, its quantity and position to arrange according to the internal diameter of tower body 310, tower body 310 can be covered with the doctor solution of ejection Cross section be principle.Described nozzle and feed pipe Flange joint.Described pretreatment spray equipment 330 arranges one layer of spraying layer, Its structure is identical with the spraying layer of after-treatment spray equipment 360.
Further, described all gas accelerator 340 structure is similar to described turbulent flow liquid film generating means 350, and difference is blade Quantity less (5~10), the angle of inclination of blade is less (blade surface is 10 °~40 ° with the angle of horizontal plane), thoroughly Light rate is bigger (overlapping area between blade accounts for 10%~the 40% of blade total surface area), the most only plays the effect of uniform flue gas, Will not play any water layer or moisture film, resistance is the least.Described demister 370 includes at least one demister;The present embodiment Middle demister 370 includes demister 371 and the demister 372 of arrangement in upright arrangement.
High-temperature flue gas to be clean flows into tower body 310 from smoke inlet 320, and pretreatment spray equipment 330 carries out cooling with just to it After step desulfurization, flue gas accelerates and dispersed through all gas accelerators 340, forms the turbulent airflow of a plurality of high speed rotating, around Urceolus high speed rotating rises.Turbulent flue gas at a high speed is when turbulent flow liquid film generating means 350, with after-treatment spray equipment 360 Ejection doctor solution collide, flue gas high-speed rotary cuts free-falling doctor solution, gas-liquid two-phase constant collision rotary-cut and pulverize mutually into And be sufficiently mixed, form one layer of turbulent liquid film being full of superfine bubble at turbulent flow liquid film generating means 350 upper surface.Due to sulfur-bearing Flue gas is extruded cutting with superfine bubble form in the motion of doctor solution high speed, and gas-liquid interface is constantly updated, and makes air film constantly quilt The doctor solution concentration that the sulfurous gas molecular concentration broken and liquid film are constantly broken is close to gas-liquid main body concentration, and resistance to mass tranfer diminishes, Gas-liquid-solid three-phase carries out contact mass transfer with huge surface area and minimum interfacial resistance, thus by abundant for the sulfur dioxide in flue gas Absorbing, the flue gas after purification carries out gas-liquid separation through demister 370, exhaust opening 380 discharges.Desulfurization with impurity Liquid is fallen and is expelled to tower outer circulation pond by leakage fluid dram 390 bottom tower body 310.
Please refer to Fig. 5, it is the structural representation carrying acting type wet static dedusting demister described in the utility model; The described acting type wet static dedusting demister that carries is separate type housing structure in the middle part of in the of;This tower body includes top tower body 491 He Bottom tower body 492, and separate therebetween a spacer segment.Smoke inlet 410, all gas it is sequentially provided with from top to bottom inside this tower body System 420, tempering system 430, backwashing system 440, high-tension electricity place 450, exhanst gas outlet 460 and discharging tube 470; Described exhanst gas outlet 460 is opened in the side of bottom tower body 492, and described discharging tube 470 is located at the bottom of bottom tower body 492. An adjustable gas liquid separation system 480 it is provided with in described exhanst gas outlet 460.Flue gas enters described tower body from smoke inlet 410, And after sequentially passing through all gas system 420, tempering system 430, backwashing system 440, high-tension electricity place 450 dedusting, by can Discharge from exhanst gas outlet 460 after mode Separate System of Water-jet 480 gas-liquid separation, wet dedusting except the waste liquid produced during mist from Discharging tube 470 is discharged.
Specifically, described high-tension electricity place 450 is energized generation by anode system 451 and cathod system 452, this high-tension electricity place 450 are distributed in the segregation section between top tower body and bottom tower body.Described anode system 451 is formed by polylith positive plate, preferably Ground, described positive plate is made up of electroconductive frp.Described cathod system 452 includes many cathode line 4521 and multiple insulator chamber 4522.Described tempering system 430 includes quenched spraying layer, and this quenched spraying layer is provided with multiple atomizer.Described backwash System 440 includes that at least one of which atomized water spraying layer, described atomized water spraying layer are provided with multiple atomizer.
Please refer to Fig. 6~10, wherein, Fig. 6 is that the mounting structure of adjustable gas liquid separation system described in the utility model shows It is intended to;Fig. 7 is that the A of Fig. 6 is to schematic diagram;Fig. 8 is the structural representation of adjustable gas liquid separation system described in the utility model Figure;Fig. 9 is described in the utility model except the structural representation of water baffle plate;Figure 10 is that the B of Fig. 9 is to schematic diagram.Described can Mode Separate System of Water-jet 480 is to be located at the three of top board 481 periphery by a top board 481 with mutual compact siro spinning technology the most vertical enclosing Block except water baffle plate 482 formed the semi-surrounding frame structure with two opening surfaces, its be fixed in bottom tower body 492 tower wall and At the bottom of tower, and one of them opening surface of this frame structure is just to exhanst gas outlet 460.After flue gas leaves high-tension electricity place 450, wear Cross and arbitrary go out exhanst gas outlet 460 except water baffle plate 482 heel row.
Specifically, described except water baffle plate 482 includes skeleton 4821 and tilts what the multi-disc being fixed on skeleton 4821 was parallel to each other Block water plate 4822.The angle of inclination of described block water plate 4822 can be passed through connector (such as bolt) and adjust, thus controls according to flue gas The flue gas of the resistance of reason system, index request and exhanst gas outlet 460 flies the water yield and the angle of inclination of block water plate is adjusted flexibly, Ensure more preferable gas-liquid separation effect.In order to ensure preferably gas-liquid separation effect, described block water plate 4822 and horizontal plane angle b Adjust in the range of 50~70 °.Preferably, this angle b being adjusted to 60 °, the gas-liquid separation effect at this angle of inclination is optimal. After flue gas leaves high-tension electricity place 450, segment anode plate can be taken away by flue gas toward dirty droplet, at smoke outlet, by In the stop of top board 481, can only pass through except water baffle plate 482 from arbitrary;Owing to tilting except the block water plate 4822 on water baffle plate 482 Arranging, the droplet being mingled with in flue gas collides with block water plate 4822, thus produces coalescence effect coalescence and become big drop to stay gear On water sheet 4822, and discharge along the block water plate 4822 discharging tube 470 bottom wet method electrostatic collector demister, make drop In inorganic salt, heavy metal, the PM2.5 material such as dust be retained down, not only make flue gas the driest, decrease cigarette simultaneously Harmful substance in gas, makes flue gas obtain the purification of deeper.
Flue gas to be clean flows in tower body from entering smoke inlet 410, and after all gas systems 420, the flue gas being evenly distributed enters Enter tempering system 430;Flue gas spray atomizing water, atomized water are adsorbed the dust in flue gas by the quenched spraying layer of tempering system 430, Reduce the ratio resistance of dust in flue gas;The water smoke being adsorbed with dust afterwards enters high-tension electricity place 450, and water smoke is under electric field action Chargedization, and be atomized further;Now, mutually collide coalescence with charged water smoke and pm2.5 grit, under Coulomb force acts on Common trend positive plate also becomes trapped.The atomized water spraying layer of backwashing system 440 atomized water is directly sprayed to positive plate thus Forming continuous print moisture film on positive plate, constantly the grit of capture is washed away the bottom to device, through discharging tube 470 by the moisture film of flowing Drain in the pond below device.Enter in adjustable gas liquid separation system 480 through dedusting except the flue gas after mist, due to wet type Electrostatic precipitation demister is type of giving vent to anger under upper air, and segment anode plate can be taken away, in flue gas by flue gas toward dirty droplet The droplet being mingled with collides with the block water plate 4822 on adjustable gas liquid separation system, thus produces coalescence effect coalescence and become big liquid Drip and stay on block water plate 4822, make the PM2.5 materials such as the inorganic salt in drop, heavy metal, dust be retained down, finally, Discharge from exhanst gas outlet 460 except the clean flue gas of water except mist through degree of depth dedusting.
Further, described electrostatic precipitator 200 can be replaced with sack cleaner.This utility model is by dust arrester (electrostatic Cleaner unit or sack cleaner), three-phase turbulent current barrel efficient desulfurizing and dust collecting tower 300 with carry acting type wet static dedusting demister 400 Can also by the particulate Hg in flue gas, bivalent mercury soluble in water removing, particulate Hg and mercuric removal efficiency more than 90%, Realize the concentration of emission of total mercury in the flue gas at chimney and be less than 0.03mg/m3Target.
Compared to prior art, a kind of industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system of the present utility model, By SCR denitration device 110, electrostatic precipitator 200, three-phase turbulent current barrel efficient desulfurizing and dust collecting tower 300 with to put forward acting type wet type quiet The synergy of electric precipitation demister 400, it is possible to realize industry coal-boiler flue gas multiple pollutant minimum discharge index, discharge Flue gas can reach following standard: flue dust≤10mg/Nm3、SO2≤35mg/Nm3、NOx≤50mg/Nm3With hydrargyrum and change thereof Compound≤0.03mg/Nm3, not only far below existing industry coal-boiler emission limit, and system run all right, cost performance Height, is especially suitable for medium small boiler, it is convenient to installs additional on existing flue gas purifying equipment and transforms.
Embodiment 2
Referring to Figure 11, it is the industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system described in the present embodiment Structure diagram.A kind of industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system of the present embodiment, including being located at The out of stock device of SNCR 120 in the flue of boiler 800 exit passes sequentially through flue 700 with boiler 800 and is connected Electrostatic precipitator 200, synchronized desulfuring and denitrifying apparatus 500 and carry acting type wet static dedusting demister 400.
Specifically, described synchronized desulfuring and denitrifying apparatus 500 includes that the air-introduced machine 510 passing sequentially through flue connection and desulfurization take off Nitre tower 520;It is provided with flue gas chilling apparatus in flue 700 between described electrostatic precipitator 200 and described air-introduced machine 510 (not shown);It is provided with gas mixing reactor 530 in flue between described air-introduced machine 510 and desulphurization denitration tower 520, It is circumscribed with an ozone generating-device 540.
Please refer to Figure 12, it is the structural representation of the gas mixing reactor described in the present embodiment.The mixing of described gas is anti- Answering device 530 is a blade structure, and it is made up of urceolus 531 and stem stem 532;Described urceolus 531 outer surface is close to flue The inner surface of 700.It is outside that described urceolus 531 is sheathed on stem stem 532, and tilts to install between urceolus 531 and stem stem 532 There is blade 533;Described blade 533 surface is 50 °~70 ° with the angle of perpendicular;Described blade 533 quantity is 10~15 Overlapping area between sheet, and blade 533 accounts for the 10%~30% of blade 533 total surface area;Described stem stem 532 diameter and urceolus The ratio of 531 diameters is 1/6~1/3.
Please refer to Figure 13, it is the structural representation of the desulphurization denitration tower described in the present embodiment.Described desulphurization denitration tower 520 It is sequentially provided with leakage fluid dram 521, smoke inlet 522, all gas accelerator the 523, first spraying layer 524, turbulent flow liquid film from the bottom up Generating means 525, after-treatment spray equipment 526, demister 527 and exhaust opening 528.Described after-treatment spray equipment 526 include the second spraying layer 5261 and the 3rd spraying layer 5262.Described demister 527 includes the first demister 5271 and Two demisters 5272.Flue gas enters inside tower body from smoke inlet 522, sequentially passes through all gas accelerator 523, turbulent flow liquid film and sends out After generating apparatus 525 and demister 527, discharge from exhaust opening 528.Described first spraying layer 524 and after-treatment spray dress Put 526 to be sprayed into by alkaline absorbent inside tower body flue gas is carried out desulfurization process, after desulfurization with the liquid of impurity below tower body Leakage fluid dram 521 be expelled in tower outer circulation pond.
Further, described flue gas chilling apparatus (not shown) may be configured as a spray equipment, by flue gas spray atomizing water Flue gas is lowered the temperature, flue-gas temperature is down to 100~120 DEG C from about 150 DEG C.The product ozone of described ozone generating-device 540 Amount is 5-50kg/h.The ozone amount that produces of described ozone generating-device 540 adjusts according to the exhaust gas volumn of the boiler processed, and exhaust gas volumn is more Greatly, ozone amount is produced the biggest.
Flue gas, after the dust removal process of electrostatic precipitator 200, enters the flue gas chilling apparatus within flue 700 so that The temperature of flue gas is down to 100~120 DEG C.Flue gas after cooling is sent into by air-introduced machine 510 and is located at the gas within flue 700 In mixing reactor 530, and the ozone produced with ozone generating-device 540 converges.Flue gas in gas mixing reactor 530 The most promptly mix homogeneously with ozone so that the NO being insoluble in water in flue gas can be fully oxidized to soluble in water NO2.Flue gas after gas mixing reactor 530 enters desulphurization denitration tower 520 from smoke inlet 522.Flue gas is through all gas Accelerator 523 accelerates and dispersed, forms the turbulent airflow that a plurality of high speed rotating rises.It is entered by the first spraying layer 524 After row cooling and preliminary desulfurization, turbulent flue gas at a high speed is when turbulent flow liquid film generating means 525, with after-treatment spray equipment The alkaline absorbent of 526 ejections is collided, and flue gas high-speed rotary cuts free-falling alkaline absorbent, gas-liquid two-phase constant collision rotary-cut And pulverize mutually and then be sufficiently mixed, form one layer of turbulent liquid being full of superfine bubble at turbulent flow liquid film generating means 525 upper surface Film.Owing to sulfur-containing smoke gas is extruded cutting with superfine bubble form in the motion of alkaline absorbent high speed, gas-liquid interface is the most more Newly, make the alkaline absorbent agent concentration that sulfurous gas molecular concentration that air film is constantly broken and liquid film are constantly broken close to gas-liquid master Bulk concentration, resistance to mass tranfer diminishes, and gas-liquid-solid three-phase carries out contact mass transfer with huge surface area and minimum interfacial resistance, thus Sulfur dioxide in flue gas is fully absorbed;Flue gas after purification carries out gas-liquid separation through demister 527, by exhaust opening 528 Discharge.Meanwhile, calcium sulfite oxidation is become calcium sulfate, NO by the ozone that reaction is superfluous2It is dissolved in water and forms nitric acid or nitrous acid, with Alkalescence reactive desulfurizing agent generate corresponding NO3-N and NO2-N, and with desulfurizing byproduct gypsum tailings fall in the lump bottom tower body by Leakage fluid dram 521 is expelled to tower outer circulation pond.
The electrostatic precipitator 200 of the present embodiment and to carry acting type wet static dedusting demister 400 same as in Example 1, and institute State electrostatic precipitator 200 also to replace with sack cleaner, do not repeat.
Further, this utility model is by dust arrester 200 (electrostatic precipitator or sack cleaner), synchronized desulfuring and denitrifying Device 500 with carry acting type wet static dedusting demister 400 can also be by the particulate Hg in flue gas, bivalent mercury soluble in water Removing, particulate Hg and mercuric removal efficiency are more than 90%, it is achieved in the flue gas at chimney, the concentration of emission of total mercury is less than 0.03mg/m3Target.
A kind of industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system compared to prior art, described in the present embodiment System, by the out of stock device of SNCR 120, electrostatic precipitator 200, synchronized desulfuring and denitrifying apparatus 500 with carry acting type wet electrostatic and remove The synergy of dirt demister 400, it is possible to realize industry coal-boiler flue gas multiple pollutant minimum discharge index, the cigarette of discharge Gas can reach following standard: flue dust≤10mg/Nm3、SO2≤35mg/Nm3、NOx≤50mg/Nm3And mercury and mercuric compounds ≤0.03mg/Nm3, not only far below existing industry coal-boiler emission limit, and system run all right, cost performance are high, It is especially suitable for medium small boiler, it is convenient to install additional on existing flue gas purifying equipment and transform.
Embodiment 3
Referring to Figure 14, it is the industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system described in the present embodiment Structure diagram.The present embodiment is substantially the same manner as Example 2, and its difference is: the industry coal-boiler flue gas described in the present embodiment Multi-pollutant minimum discharge cooperation-removal system is without the out of stock system of SNCR.How dirty a kind of industry coal-boiler flue gas of the present embodiment is Dye thing minimum discharge cooperation-removal system, including pass sequentially through with boiler 800 electrostatic precipitator 200 that flue 700 is connected, Synchronized desulfuring and denitrifying apparatus 500 and carry acting type wet static dedusting demister 400.
Electrostatic precipitator 200, synchronized desulfuring and denitrifying apparatus 500 described in the present embodiment and carry acting type wet static dedusting and fill except mist Put 400 the most same as in Example 2, do not repeat.
Compared to prior art, a kind of industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system of the present utility model, By electrostatic precipitator 200, synchronized desulfuring and denitrifying apparatus 500 and carry acting type wet static dedusting demister 400 combine work With, it is possible to realizing industry coal-boiler flue gas multiple pollutant minimum discharge index, the flue gas of discharge can reach following standard: flue dust ≤10mg/Nm3、SO2≤35mg/Nm3、NOx≤50mg/Nm3With mercury and mercuric compounds≤0.03mg/Nm3, the lowest In existing industry coal-boiler emission limit, and system run all right, cost performance are high, are especially suitable for medium small boiler.
Below it is only preferred implementation of the present utility model, it is noted that above-mentioned preferred implementation is not construed as this The restriction of utility model, protection domain of the present utility model should be as the criterion with claim limited range.This technology is led For the those of ordinary skill in territory, without departing from spirit and scope of the present utility model, it is also possible to make some improvements and modifications, These improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (10)

1. an industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system, including by flue with boiler even The gaseous contaminant removing system connect and aerosolized pollutant removing system;It is characterized in that: described aerosolized pollutant take off Except system includes dust arrester and intensified dust removal demister;Described dust arrester is electrostatic precipitator or sack cleaner;Described Intensified dust removal demister is for carrying acting type wet static dedusting demister, and it is middle part separate type housing structure, in this tower body certainly Upper and under be sequentially provided with smoke inlet, all gas system, tempering system, backwashing system, high-tension electricity place, exhanst gas outlet and row Liquid pipe;Described high-tension electricity place is energized by anode system and cathod system and produces;Described tower body includes top tower body and bottom tower body, Described high voltage electric field is distinguished and is distributed in the segregation section between top tower body and bottom tower body;It is additionally provided with one adjustable in described exhanst gas outlet Gas-liquid separation device.
Industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system the most according to claim 1, its feature exists It is by a top board and mutual compact siro spinning technology and the most vertical to enclose be located at that top board is peripheral three pieces in: described adjustable gas liquid separating apparatus At the bottom of the semi-surrounding frame structure with two opening surfaces formed except water baffle plate, its Ta Bi being fixed in bottom tower body and tower, and should One of them opening surface of frame structure is just to exhanst gas outlet;Described except water baffle plate includes skeleton and tilts to be fixed on skeleton many The block water plate that sheet is parallel to each other, and described block water plate tilt adjustable.
Industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system the most according to claim 2, its feature exists In: described block water plate and horizontal plane angle are 50 °~70 °.
4. according to the industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system described in any one of claims 1 to 3, It is characterized in that: described gaseous contaminant removing system includes denitrification apparatus and desulfurizer;Described denitrification apparatus is for being located at boiler And the SCR denitration device between dust arrester;Described desulfurizer is three-phase turbulent current barrel efficient desulfurizing and dust collecting tower, and it is located at dedusting Between device and intensified dust removal demister, it is sequentially provided with leakage fluid dram, smoke inlet, pretreatment spray equipment, all from the bottom up Gas accelerator, turbulent flow liquid film generating means, after-treatment spray equipment, demister and exhaust opening;Described turbulent flow liquid film is sent out Generating apparatus is made up of urceolus and stem stem;Described urceolus is sheathed on outside stem stem, and is tiltedly installed with blade between urceolus and stem stem.
Industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system the most according to claim 4, its feature exists In: described blade surface is 50 °~70 ° with the angle of horizontal plane;Described blade quantity is 10~20, and between blade Overlapping area accounts for the 30%~60% of blade total surface area;Described stem stem diameter is 1/6~1/3 with the ratio of outer barrel diameter.
Industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system the most according to claim 5, its feature exists In: described after-treatment spray equipment includes the spraying layer of 1~3 layer of arrangement in upright arrangement;Described spraying layer includes feed pipe and is located at confession Multiple heavy caliber conical nozzles on liquid pipe.
7. according to the industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system described in any one of claims 1 to 3, It is characterized in that: described gaseous contaminant removing system include being located at boiler export the SNCR denitration device in flue and It is located at the synchronized desulfuring and denitrifying apparatus between dust arrester and intensified dust removal demister;Described synchronized desulfuring and denitrifying apparatus includes depending on The secondary air-introduced machine connected by flue and desulphurization denitration tower;Described desulphurization denitration tower is sequentially provided with leakage fluid dram from the bottom up, enters Mouth, all gas accelerator, the first spraying layer, turbulent flow liquid film generating means, after-treatment spray equipment, demister and row Mouth;Flue gas chilling apparatus it is provided with in flue between described dust arrester and described air-introduced machine;Described air-introduced machine and desulfurization Being provided with gas mixing reactor in flue between denitrating tower, it is circumscribed with an ozone generating-device.
Industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system the most according to claim 7, its feature exists In: described gas mixing reactor is a blade structure, and it is made up of urceolus and stem stem;Described urceolus is sheathed on outside stem stem, And between urceolus and stem stem, it is tiltedly installed with blade;Described blade surface is 50 °~70 ° with the angle of perpendicular;Described Blade quantity is 5~15, and the overlapping area between blade accounts for the 10%~30% of blade total surface area;Described stem stem diameter with The ratio of outer barrel diameter is 1/6~1/3.
9. according to the industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system described in any one of claims 1 to 3, It is characterized in that: described gaseous contaminant removing system is synchronized desulfuring and denitrifying apparatus, and it is located at dust arrester and removes with intensified dust removal Between mist device, including passing sequentially through air-introduced machine and the desulphurization denitration tower that flue connects;Described desulphurization denitration tower is from the bottom up It is sequentially provided with leakage fluid dram, smoke inlet, all gas accelerator, the first spraying layer, turbulent flow liquid film generating means, after-treatment spray Device, demister and exhaust opening;Flue gas chilling apparatus it is provided with in flue between described dust arrester and described air-introduced machine; Being provided with gas mixing reactor in flue between described air-introduced machine and desulphurization denitration tower, it is circumscribed with an ozone generating-device.
Industry coal-boiler flue gas multiple pollutant minimum discharge cooperation-removal system the most according to claim 9, its feature Being: described gas mixing reactor is a blade structure, it is made up of urceolus and stem stem;Described urceolus is sheathed on outside stem stem, And between urceolus and stem stem, it is tiltedly installed with blade;Described blade surface is 50 °~70 ° with the angle of perpendicular;Described Blade quantity is 5~15, and the overlapping area between blade accounts for the 10%~30% of blade total surface area;Described stem stem diameter with The ratio of outer barrel diameter is 1/6~1/3.
CN201620111956.3U 2016-02-03 2016-02-03 Minimum discharge of many pollutants of industry coal fired boiler flue gas is desorption system in coordination Expired - Fee Related CN205517261U (en)

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CN105561776A (en) * 2016-02-03 2016-05-11 江门市同力环保科技有限公司 Industrial coal-fired boiler flue gas multi-pollutant ultra-low emission and removal cooperated system
CN107457078A (en) * 2017-09-19 2017-12-12 东北师范大学 The adjustable irregular arista electrode plate of Temperature Distribution based on Internet of Things
CN107754578A (en) * 2017-10-20 2018-03-06 佛山市莫森环境工程有限公司 A kind of industry coal-boiler flue gas minimum discharge complete set of equipments
CN107831384A (en) * 2017-10-27 2018-03-23 国网新疆电力公司电力科学研究院 A kind of green energy conservation method suitable for extreme climate environmental simulation laboratory
CN110270209A (en) * 2019-07-11 2019-09-24 成都锐思环保技术股份有限公司 A kind of method and system of coal-burning boiler denitration
CN110893314A (en) * 2019-12-19 2020-03-20 广西江邕环保科技有限公司 Wet process low temperature deNOx systems

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105561776A (en) * 2016-02-03 2016-05-11 江门市同力环保科技有限公司 Industrial coal-fired boiler flue gas multi-pollutant ultra-low emission and removal cooperated system
CN107457078A (en) * 2017-09-19 2017-12-12 东北师范大学 The adjustable irregular arista electrode plate of Temperature Distribution based on Internet of Things
CN107754578A (en) * 2017-10-20 2018-03-06 佛山市莫森环境工程有限公司 A kind of industry coal-boiler flue gas minimum discharge complete set of equipments
CN107831384A (en) * 2017-10-27 2018-03-23 国网新疆电力公司电力科学研究院 A kind of green energy conservation method suitable for extreme climate environmental simulation laboratory
CN107831384B (en) * 2017-10-27 2019-11-12 国网新疆电力公司电力科学研究院 A kind of green energy conservation method suitable for extreme climate environmental simulation laboratory
CN110270209A (en) * 2019-07-11 2019-09-24 成都锐思环保技术股份有限公司 A kind of method and system of coal-burning boiler denitration
CN110893314A (en) * 2019-12-19 2020-03-20 广西江邕环保科技有限公司 Wet process low temperature deNOx systems

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