CN205461770U - Quick circulation of coaxial short distance is semidry method gas cleaning equipment of desorption pollutant in coordination - Google Patents

Quick circulation of coaxial short distance is semidry method gas cleaning equipment of desorption pollutant in coordination Download PDF

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Publication number
CN205461770U
CN205461770U CN201620126471.1U CN201620126471U CN205461770U CN 205461770 U CN205461770 U CN 205461770U CN 201620126471 U CN201620126471 U CN 201620126471U CN 205461770 U CN205461770 U CN 205461770U
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China
Prior art keywords
flue
solid separator
gas
flue gas
desulfurization reactor
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CN201620126471.1U
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Chinese (zh)
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刁经中
徐纲
赵钰慧
黄灵芝
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Beijing Bolang Environmental Engineering & Technology Co., Ltd.
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Beijing Bolang Eco - Environmental Science And Technology Co Ltd
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Abstract

The utility model discloses a quick circulation of coaxial short distance is semidry method gas cleaning equipment of desorption pollutant in coordination is provided with desulfurization reactor, desulfurization reactor connects bag collector, desulfurization reactor includes the reacting chamber at middle part, and the reacting chamber lower part is provided with imported flue, and upper portion is provided with exhaust pass, be provided with upper and lower two -layer hydraulic in the reacting chamber, for reaction sequence humidification and cooling, between two -layer hydraulic, be provided with fixed blade spiral -flow type gas -solid separator and venetian blind type gas -solid separator, separate the particulate matter in the flue gas air current, it connects the flue ash bucket to be provided with dust outlet on the body of import flue below, flue ash bucket exit end is provided with star type unloading valve and push -pull valve.

Description

The purification of flue gases by semidry process equipment of coaxial short distance Rapid Circulation cooperation-removal pollutant
Technical field
This utility model relates to the purification of flue gases by semidry process equipment of a kind of coaxial short distance Rapid Circulation cooperation-removal pollutant, it is specifically related to desulfurization reactor, it is adaptable to coal-burning power plant, burning power plant, steel industry sintering machine and the smoke eliminator of various Industrial Stoves.
Background technology
Semidry-method recirculating fluidized bed flue gas desulfurization technique technique is simple, reduced investment, occupation of land is little, operating cost is low, non-secondary pollution (non-wastewater discharge), desulfuration efficiency high, equipment does not corrodes, available general carbon steel manufacture, meet China's actual conditions, thus favored.
But its nucleus equipment reactor still suffers from three big technical barriers: 1. flue gas flow field, absorbent flow field, humidification water smoke flow field are the most uneven, even serious bias current or local eddy currents;2. Desulphurization glues wall, conglomeration, the bed that collapses, stifled tower have generation more, causes desulphurization system to be difficult to long-period stable operation;3. exiting flue gas dustiness is the highest by (800~1000g/Nm3), causing the sack cleaner overload at rear portion, resistance drop quickly improves.These Three Difficult Issues become the bottleneck restricting this technology.
Utility model content
For problems of the prior art, this utility model provides the purification of flue gases by semidry process equipment of a kind of coaxial short distance Rapid Circulation cooperation-removal pollutant, these difficult problems in prior art can be solved well, the configuration of this utility model system is rationally, structure of reactor is reasonable, flue gas flow field, temperature field, pressure field is highly uniform, humidification activation optimization, ion reaction environment optimization, gas solid separation optimization, humidification activation water smoke flow field, flue-gas temperature regulation and control water smoke flow field is the most uniform, main reaction region absorbent short distance Rapid Circulation, realize high-efficiency desulfurization, side reaction district flexible flue-gas temperature, effectively prevent equipment corrosion, can be with cooperation-removal sour gas, the purification of flue gases by semidry process technology of heavy metal and dioxin.
The purpose of this utility model is achieved through the following technical solutions:
The purification of flue gases by semidry process equipment of coaxial short distance Rapid Circulation cooperation-removal pollutant, it is provided with desulfurization reactor, described desulfurization reactor connects sack cleaner, described desulfurization reactor includes the reative cell at middle part, reative cell bottom is provided with inlet flue duct, top is provided with exhaust pass, is provided with upper and lower two-layer hydraulic spray nozzle in described reative cell, for course of reaction humidification and cooling;Between two-layer hydraulic spray nozzle, it is provided with fixing blade spiral-flow type gas-solid separator and venetian blind type gas-solid separator, the particulate matter in separating flue air-flow;Being provided with dust outlet below described inlet flue duct on body and connect flue ash bucket, the described flue ash bucket port of export is provided with star-shaped dust-discharging valve and push-pull valve.
Further, being provided with 3 deflectors not waiting arc in the inlet flue duct of described desulfurization reactor, reative cell bottom is provided with some groups of Laval nozzle formula flue gases and absorbent accelerator, and flue gas stream is in described accelerator enters reative cell;It is provided with absorbent entrance above the inlet flue duct of described desulfurization reactor on body, connects slaked lime feed bin;It is provided with absorbent entrance above the exhaust pass of described desulfurization reactor on body, connects activated carbon feed bin.
Further, described fixing blade spiral-flow type gas-solid separator is circumferentially provided with some spiral-guide blades, and flue gas stream is fixed blade spiral-flow type gas-solid separator and is guided in carries out particulate separation under the synergy of centrifugal force and gravity;Described venetian blind type gas-solid separator is circumferentially provided with corrugated leaf grating.
Further, it is provided with some groups of circulating ash down-comers below described fixing blade spiral-flow type gas-solid separator and venetian blind type gas-solid separator, the upper port of circulating ash down-comer is horn mouth, and the lower port of circulating ash down-comer is respectively connecting to the aditus laryngis position of described accelerator.
Further, described reative cell bottom is provided with interior circulation ash bucket, and interior circulation ash bucket is positioned at described accelerator headboard center, and interior circulation hopper bottom is provided with conveying worm, and the particulate matter collected in interior circulation ash bucket is exported described desulfurization reactor.
Further, described stationary blade cyclone gas solid separator is arranged in bell jar, described venetian blind type gas-solid separator is arranged on the cover body of described bell jar, arrange around described stationary blade cyclone gas solid separator, described bell jar top is provided with acoustic wave ash ejector, destroy and stop the combination of dust granules and desulfurization reactor internals wall, make flue gas produce vibration with dust granules and be in suspended state.
Further, the exhaust pass of described desulfurization reactor connects described sack cleaner, and sack cleaner connects air-introduced machine, and described air-introduced machine connects chimney;It is connected between clean gas pipeline and the inlet flue duct of described desulfurization reactor at described air-introduced machine rear and has ftercompction pipeline.
Further, described sack cleaner uses Long Bag Low Pressure Pulse Filter, and described sack cleaner bottom is provided with fluidisation Lower Hold, and fluidisation Lower Hold connects ash storehouse by storehouse pump, is delivered to by dust granules thing in ash storehouse.
Further, described slaked lime feed bin top is provided with top cleaner unit, and bottom is provided with star-shaped dust-discharging valve, is additionally provided with gasification board in lime bin;Described Hui Ku top is provided with top cleaner unit, and bottom is provided with star-shaped dust-discharging valve, and ash is additionally provided with gasification board in storehouse.
Further, described lower layer of water atomizing nozzle is provided with 6, and described upper water atomizing nozzle is provided with 3, the injection direction of upper and lower two-layer hydraulic spray nozzle the most upward, the high pressure fine water-spray system of described hydraulic spray nozzle coupled reaction outdoor.
The purification of flue gases by semidry process equipment using the coaxial short distance Rapid Circulation cooperation-removal pollutant of said structure setting has the advantage that
This utility model configuration rationally, flue gas flow field, temperature field, pressure field, absorbent flow field, humidification activation water smoke flow field, flue-gas temperature regulation and control water smoke flow field the most uniformly, stable;Absorbent circulating path is short, and circulating ratio is high.
Heavy pressure fine spray can not only make the effective humidification activation of absorbent, reduces flue-gas temperature, improves desulfuration efficiency, and the bad working environments such as wet wall, fouling, the bed that collapses can be avoided to occur.
Fixing blade spiral-flow type gas-solid separator and venetian blind type gas-solid separator can be under the conditions of the lowest resistance drops, realize efficient gas solid separation, effectively reduce the dustiness of reactor outlet flue gas, significantly reduce the load of rear portion sack cleaner, it is ensured that equipment safety, stable, long-term operation.
Accompanying drawing explanation
Fig. 1 is the structural representation for this utility model purification of flue gases by semidry process equipment;
Fig. 2 is the structural representation of the desulfurization reactor that this utility model uses;
Fig. 3 is the sectional view in Fig. 2 along A-A;
Fig. 4 is the partial enlarged view in B portion in Fig. 2;
Fig. 5 is the top view of this utility model purification of flue gases by semidry process equipment.
In figure: 1. inlet flue duct;2. slaked lime feed bin;
3. desulfurization reactor;3-1. flue ash bucket;3-2. inlet flue duct;3-3. absorbent entrance;3-4. accelerator;3-5. circulating ash reflux inlet pipe;3-6. main reaction region diffuser cylinder;3-7. lower layer of water atomizing nozzle;3-8. main reaction region cylinder;3-9. circulating ash down-comer;3-10. venetian blind type gas-solid separator;3-11. flue gas rising passway;3-12. fixes blade spiral-flow type gas-solid separator;3-13. acoustic wave ash ejector;3-14. upper water atomizing nozzle;3-15. side reaction district cylinder;3-16. exhaust pass;
4. activated carbon feed bin;5. sack cleaner;6. neat stress flue;7. chimney;8. ash storehouse;9. air-introduced machine;10. storehouse pump;11. fluidisation Lower Holds;12. humidification activations and flue-gas temperature regulation and control spraying system;13. backflow flues;Circulation ash bucket in 14..
Detailed description of the invention
By further illustrating the technological means and effect that this utility model taked by reaching predetermined technique purpose, below in conjunction with accompanying drawing and preferred embodiment, structure of the present utility model, workflow are described in detail as follows.
(1) it is one of embodiment of the present utility model as shown in Figure 1, Figure 2, Figure 5, in this embodiment, the purification of flue gases by semidry process equipment of coaxial short distance Rapid Circulation cooperation-removal pollutant, being provided with desulfurization reactor 3, desulfurization reactor 3 connects sack cleaner 5, and desulfurization reactor 3 includes the reative cell at middle part, reative cell bottom is provided with inlet flue duct 1, top is provided with exhaust pass 3-16, is provided with upper and lower two-layer hydraulic spray nozzle in reative cell, for course of reaction humidification and cooling;Between two-layer hydraulic spray nozzle, it is provided with fixing blade spiral-flow type gas-solid separator 3-12 and venetian blind type gas-solid separator 3-10, the particulate matter in separating flue air-flow.
Desulfurization reactor 3 is made up of main reaction region, gas solid separation district and side reaction district.
Inlet flue duct 1 can use rectangular flue.Being provided with dust outlet below inlet flue duct 1 on body and connect flue ash bucket 3-1, the flue ash bucket 3-1 port of export is provided with star-shaped dust-discharging valve and push-pull valve.So it is disposed to ash discharge from flue ash bucket 3-1 convenient.And close the outlet of flue ash bucket 3-1 when not ash discharge, prevent flue gas from revealing.
Eccentric annular exhanst gas outlet flue 3-16 is the cylindrical shape flat-top cover eccentric with side reaction district cylinder and downward-sloping flue composition.
Being provided with 3 deflectors not waiting arc in the inlet flue duct of desulfurization reactor 3, reative cell bottom is provided with some groups of Laval nozzle formula flue gases and absorbent accelerator 3-4, and flue gas stream is in accelerator 3-4 enters reative cell;It is provided with absorbent entrance above the inlet flue duct 1 of desulfurization reactor 3 on body, connects slaked lime feed bin 2;It is provided with absorbent entrance above the exhaust pass 3-16 of desulfurization reactor 3 on body, connects activated carbon feed bin 4.
Activated carbon feed bin 4 uses frequency control star-shaped dust-discharging valve.
As shown in Figure 2 and Figure 3, fixing blade spiral-flow type gas-solid separator 3-12 is circumferentially provided with some spiral-guide blades, and flue gas stream is fixed blade spiral-flow type gas-solid separator 3-12 and is guided in carries out particulate separation under the synergy of centrifugal force and gravity;Venetian blind type gas-solid separator 3-10 is circumferentially provided with corrugated leaf grating.
Fixing blade spiral-flow type gas-solid separator 3-12, bottom is additionally provided with circular cone base plate.Venetian blind type gas-solid separator 3-10 bottom is provided with conical baffle.
It is provided with some groups of circulating ash down-comer 3-9 below fixing blade spiral-flow type gas-solid separator 3-12 and venetian blind type gas-solid separator 3-10, the upper port of circulating ash down-comer 3-9 is horn mouth, and the lower port of circulating ash down-comer 3-9 is respectively connecting to the aditus laryngis position of accelerator 3-4.
Flue gas rising passway 3-11, for main reaction region desulfurization fume after fixing blade spiral-flow type gas-solid separator and venetian blind type gas-solid separator, removing overwhelming majority Desulphurization, enters the exhaust gases passes in side reaction district.
Reative cell bottom is provided with interior circulation ash bucket 14, and interior circulation ash bucket 14 is positioned at accelerator 3-4 headboard center, is provided with conveying worm bottom interior circulation ash bucket 14, the particulate matter output desulfurization reactor 3 that will collect in interior circulation ash bucket 14.
As shown in Figure 2, Figure 4 shows, stationary blade cyclone gas solid separator 3-12 is arranged in bell jar, venetian blind type gas-solid separator 3-10 is arranged on the cover body of this bell jar, arrange around stationary blade cyclone gas solid separator 3-12, this bell jar top is provided with acoustic wave ash ejector 3-13, destroy and stop the combination of dust granules and desulfurization reactor 3 internals wall, make flue gas produce vibration with dust granules and be in suspended state.
The exhaust pass 3-16 of desulfurization reactor 3 connects sack cleaner 5, and sack cleaner 5 connects air-introduced machine 9, and air-introduced machine 9 connects chimney 7;It is connected, between clean gas pipeline and the inlet flue duct 1 of desulfurization reactor 3 at air-introduced machine 9 rear, the backflow flue 13 having in ftercompction pipeline, i.e. Fig. 1.
Sack cleaner 5 uses Long Bag Low Pressure Pulse Filter, sack cleaner 5 bottom to be provided with fluidisation Lower Hold, and fluidisation Lower Hold connects ash storehouse 8 by storehouse pump 10, is delivered to by dust granules thing in ash storehouse 8.Fluidisation Lower Hold is configured with roots blower and air preheater.
Slaked lime feed bin 2 top is provided with top cleaner unit, and bottom is provided with star-shaped dust-discharging valve, is additionally provided with gasification board in slaked lime feed bin 2;Ash top, storehouse 8 is provided with top cleaner unit, and bottom is provided with star-shaped dust-discharging valve, and ash is additionally provided with gasification board in storehouse 8.
Lower layer of water atomizing nozzle is provided with 6, and upper water atomizing nozzle is provided with 3, the injection direction of upper and lower two-layer hydraulic spray nozzle the most upward, the high pressure fine water-spray system of hydraulic spray nozzle coupled reaction outdoor.High pressure fine water-spray system includes the parts such as water tank, piping filter, high-pressure hydraulic pump, regulation valve, effusion meter.
This utility model uses the truthful data of Practical Project, through rigorous technology Calculation, and uses Fluent software to carry out multiphase flow flow field analysis to be verified, effect is very good.
(2) the more detailed structure of this utility model and work process are described as follows.
Seeing Fig. 2, unique texture of the present utility model is: the streamlined inlet flue duct of direct current with 3 Unequal distance circular blast baffles, the interior circulation ash bucket with conveying worm, " Laval nozzle " formula flue gas accelerator, heavy pressure fine spray humidification activation nozzle and flue-gas temperature regulation and control nozzle, fixing blade spiral-flow type gas-solid separator, venetian blind type gas-solid separator, acoustic wave ash ejector and bias annular exhanst gas outlet with corrugated leaf grating.
The exiting flue gas of coal-fired plant boiler (Industrial Boiler or Industrial Stoves), direct current streamlined inlet flue duct is entered from this reactor bottom, fresh slaked lime (absorbent) enters flue through absorbent entrance, through 3 Unequal distance circular blast baffles together with former flue gas, continue up, enter reactor main reaction region by 6 flue gas accelerators.
The particulate matter that in boiler export flue gas, volume is bigger, heavier lodges in inlet flue duct ash bucket, periodically discharges.
Main reaction region desulfurization fume is through fixing blade spiral-flow type gas-solid separator, solid phase particles thing (absorbent and product in flue gas, it is referred to as " Desulphurization " or " circulating ash ") it is thrown toward blade wall, again by centrifugal inertial force obliquely and the synergy of gravity, face down landing along blade wall;Again through venetian blind type gas-solid separator, the granule being separated is bigger, containing the absorbent reacted the most completely in a large number (also known as " circulating ash ",) fall into 6 circulating ash flue-dust retainers being attached to main reaction region cylinder inboard wall and flow downward, through 6 circulating ash reflux inlet pipes, at the aditus laryngis of flue gas accelerator, enter flue gas accelerator;Owing at flue gas accelerator aditus laryngis, the flow velocity of flue gas is enhanced more than 3 times in moment so that produce negative pressure at aditus laryngis side openings, circulating ash can be sucked smoothly flue gas accelerator, and mix with fresh slaked lime, boiler export flue gas, enter main reaction region together.
The flue gas mixed with fresh slaked lime, circulating ash is through 6 flue gas accelerators, even dispersion is in the main reaction region total space, and it is arranged on the heavy pressure fine spray of 1~10 μm that 6 humidification activation nozzles above flue gas accelerator diffuser eject, can be at flash evapn, flue gas is made to lower the temperature rapidly, make slaked lime humidification activation, with the sour gas (SO in flue gas3、SO2, HCl, HF, NOx etc.) occur ion reaction, reach the purpose of deacidification.
Now the solid phase particles thing in main reaction region constantly collides, and slaked lime surface is stripped with the product (powdery, salts substances) of sour gas, moves upward with flue gas;The cluster of grains that volume is bigger is difficult to rise with flue gas, and is gathered in the middle part of main reaction region, falls into interior circulation ash bucket, discharges through conveying worm;
It is installed on the acoustic wave ash ejector time opening at fixing blade spiral-flow type gas-solid separator top, in order to remove the dust stratification being attached to wall surface.
By fixing blade spiral-flow type gas-solid separator and the desulfurization fume of venetian blind type gas-solid separator, through flue gas rising passway, enter side reaction district, according to flue-gas temperature now, suitably adjust the injection flow rate of 3 flue-gas temperature regulation and control nozzles, flue-gas temperature is controlled more than dew point temperature 15 DEG C~20 DEG C, it is ensured that equipment does not corrodes;Desulphurization reaction is proceeded in this region;At side reaction district top center, add activated carbon simultaneously, mix with the desulfurization fume carrying fine dust (Desulphurization), enter the sack cleaner at rear portion through eccentric annular exhaust pass.
Seeing accompanying drawing 1, from top, reaction zone bias annular exhaust pass out, the flue gas with activated carbon, Desulphurization enters sack cleaner, cooperation-removal multiple pollutant (deacidification, de-dioxin, removing heavy-metal), and dedusting (Desulphurization).
The flue gas purified passes through neat stress flue, air-introduced machine send into chimney, flue gas up to standard is drained into air;
With very small amount dioxin, the Desulphurization of heavy metal, send into storehouse pump through fluidisation Lower Hold;Again through air conveying by Desulphurization feeding ash storehouse;Periodically deliver to that Desulphurization is stable, cured workshop section.
Humidification activation and flue-gas temperature regulation and control spraying system, regulate and control nozzle including water tank, piping filter, water pump, main reaction region humidification activation nozzle and side reaction district flue-gas temperature.The ionizing deacidification being realized absorbent by heavy pressure fine spray is reacted, it is achieved the flexible modulation of desulfurization fume temperature.
When boiler export exhaust gas volumn is the least, and reactor is difficult to normally work, by a part of neat stress by backflow flue, send inlet flue duct back to, to ensure that reactor is properly functioning;
In reactor main reaction region, the cluster of grains that volume is bigger is difficult to rise with flue gas, and is gathered in the middle part of main reaction region, falls into interior circulation ash bucket, discharges through conveying worm.
(3) the utility model has the advantage of:
1) the streamlined inlet flue duct of direct current: meet the natural streamline of flow of flue gas, forms inequality at bend deflector cut section and crosses stream, effectively reduces lateral eddy current, prevents flue gas bias current, it is achieved the steady flow that flue gas is evenly distributed in reactor;Fluid resistance is little;This structure is better than the bilateral air intake structure of Wulff company of Germany, is better than single flow (two the 135 ° of knuckle elbows) air intake structure of LLAG company of Germany, the most domestic traditional unilateral perpendicular quadrature air intake structure.
2) circulation ash bucket in: bottom is with conveying worm.In can collecting main reaction region at any time, in former flue gas, granule is relatively big, density is bigger solid content or Desulphurization group, and discharge in time, improve the interior circulation environment of main reaction region.
3) flue gas accelerator: using Laval nozzle, the length of its aditus laryngis high regime is far smaller than the length of domestic and international CFB method venturi aditus laryngis high regime, and therefore its resistance drop is substantially reduced.Owing at flue gas accelerator aditus laryngis, the flow velocity of flue gas is enhanced more than 3 times in moment so that produce negative pressure at aditus laryngis side openings, circulating ash can be sucked smoothly flue gas accelerator, and mix with fresh slaked lime, boiler export flue gas, enter main reaction region together.The kinetic energy of flue gas can be effectively improved in moment, it is achieved the flue gas acceleration to solid particulate matter (absorbent), it is ensured that absorbent is uniformly suspended within flue gas, make gas-particle two-phase be sufficiently mixed, collide, rub, mass transfer, conduct heat, react.
4) main reaction region humidification activation nozzle and side reaction district flue-gas temperature regulation and control nozzle: use high-pressure fine water mist nozzle, water smoke continuous uniform, mist particle diameter is little, usually 1~10 μm, minimum up to nanoscale, specific surface area substantially exceeds general water smoke, and droplet speed is high, density is big, can evaporate rapidly, absorbs heat, lower the temperature;Absorbent surface can be made to moisten rapidly, humidification activation, it is effectively improved its reactivity;And greatly increase absorbent and SO3、SO2, the water film surface of the sour gas such as HCL, HF contact amass, under gaseous state, liquid and the vapor state between gas-liquid, make SO3、SO2, the sour gas such as HCL, HF, through absorbing, be humidified, condense, rub, colliding, mass transfer, heat transfer, ion reaction, thus reach the purpose of efficient deacidification.Owing to uniform flue gas flow field and absorbent flow field enclose uniform spray vaporization flow field, the wet wall effect caused because of local water spray excess can be prevented effectively from, viscous wall, fouling, conglomeration, the bed that collapses, stifled tower phenomenon is avoided to occur, it is ensured that equipment safety, stable, long-term operation.
5) fixing blade spiral-flow type gas-solid separator: flue gas is along direct current radiation direction, enter downward-sloping tangential swirl passage, after particulate matter in flue gas obtains a little acceleration, obtain the centrifugal inertial force that enough Sloped rotatings are downward, and assemble to the windward side of deflector, the limit wall being affixed to deflector moves, by centrifugal inertial force obliquely and the synergy of gravity, face down landing along blade wall, reach the purpose of gas solid separation.
6) venetian blind type gas-solid separator: using corrugated leaf grating, bottom is provided with conical baffle.Being flowed downward by the flue gas of fixing blade spiral-flow type gas-solid separator, clash into the corrugated leaf grating of louver separator, solid particle therein collects to trough and separates, and flue gas is then from the crest flow-disturbing of leaf grating.Conical baffle is set in the lower section of leaf grating, can effectively alleviate the reentrainment of particulate matter.
7) fixing blade spiral-flow type gas-solid separator and the synergy of venetian blind type gas-solid separator, play the effect of particulate cascade: from the fierce collision friction here of the absorbent in the flue gas of main reaction region, desulfurization (deacidification) product of absorbent surface can be efficiently peeled off, and particle size is bigger, heavier absorbent separates, return to main reaction region by circulating ash flue-dust retainer, circulating ash reflux inlet pipe and flue gas accelerator, continue to participate in deacidification reaction;It is stripped desulfurization (deacidification) product got off, owing to particle size is little, light weight, it is easy to taken to side reaction district by flue gas, then mix with activated carbon, enters the sack cleaner at rear portion through eccentric annular exhaust pass.
8) acoustic wave ash ejector: convert compressed air into powerful sound wave, in making reactor, the dust stratification of each parts surface is by the tension and compression effect repeatedly of the dilatational wave with certain frequency alternate, destroy and stop the combination of dust granules and reactor internals wall, flue gas is made to produce vibration with dust granules, it is allowed to be in suspended state, in order to taken away by flue gas;Sound wave can run through and clean unapproachable position, and effective soot blowing radius is up to 7~10m, without dead angle;Cleaned surface will not produce mechanical wear;Operating cost is low, and technology maturation is reliable.
9) circulating ash enters from Laval nozzle formula flue gas accelerator throat, is equivalent to ejector pump principle, not only improves the separation efficiency improving venetian blind type gas-solid separator, contribute to again absorbent being uniformly distributed in reactor main reaction region.
10) eccentric annular exhanst gas outlet flue: be made up of the cylindrical shape flat-top cover eccentric with side reaction district cylinder and downward-sloping flue.This structure is used can thoroughly to eliminate the swirling eddy in traditional CFB method reactor lateral outlet tower, to keeping the uniform flue gas flow field in reactor side reaction district, increasing effective reaction space, reduction reactor pressure fall than concentric annular exhanst gas outlet advantageously.
11) activated carbon storehouse is located at top, reactor side reaction district: be conducive to activated carbon uniformly to mix with desulfurization fume;Due to be basically completed desulfurization (deacidification) and react, pass through again the desulfurization fume mixing in the side reaction district of effective gas solid separation, it is possible to decrease the consumption of activated carbon;Be conducive to improving the removal efficiency of cooperation-removal multiple pollutant.
Described above simply to illustrate that this utility model, it is understood that this utility model is not limited to above example, meets the various variants of this utility model thought all within protection domain of the present utility model.

Claims (10)

1. the purification of flue gases by semidry process equipment of coaxial short distance Rapid Circulation cooperation-removal pollutant, it is provided with desulfurization reactor, described desulfurization reactor connects sack cleaner, described desulfurization reactor includes the reative cell at middle part, reative cell bottom is provided with inlet flue duct, and top is provided with exhaust pass, it is characterised in that, described reative cell is provided with upper and lower two-layer hydraulic spray nozzle, for course of reaction humidification and cooling;Between two-layer hydraulic spray nozzle, it is provided with fixing blade spiral-flow type gas-solid separator and venetian blind type gas-solid separator, the particulate matter in separating flue air-flow;Being provided with dust outlet below described inlet flue duct on body and connect flue ash bucket, the described flue ash bucket port of export is provided with star-shaped dust-discharging valve and push-pull valve.
2. flue gas purifying equipment as claimed in claim 1, it is characterized in that, the inlet flue duct of described desulfurization reactor is provided with 3 deflectors not waiting arc, reative cell bottom is provided with some groups of Laval nozzle formula flue gases and absorbent accelerator, and flue gas stream is in described accelerator enters reative cell;It is provided with absorbent entrance above the inlet flue duct of described desulfurization reactor on body, connects slaked lime feed bin;It is provided with absorbent entrance above the exhaust pass of described desulfurization reactor on body, connects activated carbon feed bin.
3. flue gas purifying equipment as claimed in claim 1, it is characterized in that, described fixing blade spiral-flow type gas-solid separator is circumferentially provided with some spiral-guide blades, and flue gas stream is fixed blade spiral-flow type gas-solid separator and is guided in carries out particulate separation under the synergy of centrifugal force and gravity;Described venetian blind type gas-solid separator is circumferentially provided with corrugated leaf grating.
4. flue gas purifying equipment as claimed in claim 2, it is characterized in that, it is provided with some groups of circulating ash down-comers below described fixing blade spiral-flow type gas-solid separator and venetian blind type gas-solid separator, the upper port of circulating ash down-comer is horn mouth, and the lower port of circulating ash down-comer is respectively connecting to the aditus laryngis position of described accelerator.
5. flue gas purifying equipment as claimed in claim 2, it is characterized in that, described reative cell bottom is provided with interior circulation ash bucket, interior circulation ash bucket is positioned at described accelerator headboard center, interior circulation hopper bottom is provided with conveying worm, and the particulate matter collected in interior circulation ash bucket is exported described desulfurization reactor.
6. flue gas purifying equipment as claimed in claim 1, it is characterized in that, described stationary blade cyclone gas solid separator is arranged in bell jar, described venetian blind type gas-solid separator is arranged on the cover body of described bell jar, arrange around described stationary blade cyclone gas solid separator, described bell jar top is provided with acoustic wave ash ejector, destroys and stop the combination of dust granules and desulfurization reactor internals wall, makes flue gas produce vibration with dust granules and be in suspended state.
7. flue gas purifying equipment as claimed in claim 1, it is characterised in that the exhaust pass of described desulfurization reactor connects described sack cleaner, and sack cleaner connects air-introduced machine, and described air-introduced machine connects chimney;It is connected between clean gas pipeline and the inlet flue duct of described desulfurization reactor at described air-introduced machine rear and has ftercompction pipeline.
8. flue gas purifying equipment as claimed in claim 2, it is characterized in that, described sack cleaner uses Long Bag Low Pressure Pulse Filter, and described sack cleaner bottom is provided with fluidisation Lower Hold, fluidisation Lower Hold connects ash storehouse by storehouse pump, is delivered to by dust granules thing in ash storehouse.
9. flue gas purifying equipment as claimed in claim 8, it is characterised in that described slaked lime feed bin top is provided with top cleaner unit, and bottom is provided with star-shaped dust-discharging valve, is additionally provided with gasification board in lime bin;Described Hui Ku top is provided with top cleaner unit, and bottom is provided with star-shaped dust-discharging valve, and ash is additionally provided with gasification board in storehouse.
10. flue gas purifying equipment as claimed in claim 1, it is characterized in that, described lower layer of water atomizing nozzle is provided with 6, and described upper water atomizing nozzle is provided with 3, the injection direction of two-layer hydraulic spray nozzle is the most up and down, the high pressure fine water-spray system of described hydraulic spray nozzle coupled reaction outdoor.
CN201620126471.1U 2016-02-18 2016-02-18 Quick circulation of coaxial short distance is semidry method gas cleaning equipment of desorption pollutant in coordination Expired - Fee Related CN205461770U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107754529A (en) * 2017-11-07 2018-03-06 成都恒力达科技有限公司 A kind of circulating air cleaning facility based on water cyclone
CN109847482A (en) * 2019-01-25 2019-06-07 广州市欧树环保科技有限公司 A kind of heavy duty detergent sack cleaner for industrial waste gas purifying processing
CN110038391A (en) * 2019-05-06 2019-07-23 国家能源投资集团有限责任公司 Powdered activated coke moving bed desulfurizer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107754529A (en) * 2017-11-07 2018-03-06 成都恒力达科技有限公司 A kind of circulating air cleaning facility based on water cyclone
CN107754529B (en) * 2017-11-07 2021-01-08 上海尚远建设工程有限公司 Circulating air purification equipment based on water rotating device
CN109847482A (en) * 2019-01-25 2019-06-07 广州市欧树环保科技有限公司 A kind of heavy duty detergent sack cleaner for industrial waste gas purifying processing
CN110038391A (en) * 2019-05-06 2019-07-23 国家能源投资集团有限责任公司 Powdered activated coke moving bed desulfurizer

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