CN109794157A - A kind of incineration flue gas wet process deacidifying device and deacidifying flue gas technique - Google Patents
A kind of incineration flue gas wet process deacidifying device and deacidifying flue gas technique Download PDFInfo
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- CN109794157A CN109794157A CN201811624421.6A CN201811624421A CN109794157A CN 109794157 A CN109794157 A CN 109794157A CN 201811624421 A CN201811624421 A CN 201811624421A CN 109794157 A CN109794157 A CN 109794157A
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Abstract
The present invention relates to a kind of incineration flue gas wet process deacidifying devices, including cooling tower, wet scrubber tower, acid mist coagulator, smoke re-heater, and four are sequentially connected by pipeline；Wet scrubber tower, which is from bottom to top arranged in tower, recycles liquid case, gas feed, gas distributor, filler, spray system, gas distributor, demisting layer, gas vent；Liquid case is recycled in spray system, tower to be connected with tower outer circulation liquid case respectively；Cooling tower is the double-deck falling liquid film wetted wall tower；Acid mist coagulator is horizontal tower, and setting can the opposite spray system sprayed.The present invention passes through the stable absorption and dehumidification demisting of filler, realizes the depickling of high efficiency wet process, while having emission reduction effect to water vapour, acid mist, salt fog, solid knot particulate matter, contributes to haze is reduced；In addition the present invention achievees the purpose that outlet does not generate white cigarette by the droplet condensation and the heating of smoke re-heater of the cooling and dehumidification, acid mist coagulator of wet scrubber tower.
Description
Technical field
The present invention relates to environment protection field more particularly to a kind of incineration flue gas wet process deacidifying device and deacidifying flue gas techniques.
Background technique
The traditional mode of solid waste (including rubbish or dangerous waste) incineration plant is that semidry method+dry method+flue gas disappears white device to slough
White cigarette when harmful substance reaches emission compliance and eliminates discharge.But as environmental requirement is increasingly stringenter, the method is with regard to nothing
Method meets the requirement of technique.Important pollutant is SO in the flue gas of solid waste burning2And other acid substances such as HCL, HF.In recent years
Come, wet process deacidification technique solid waste (rubbish and dangerous waste) burn aspect of removing the evil using more and more, but many places are in first
Begin the application stage, emission effect and white (the row's spoken parts in an opera cigarette) effect that disappears are to be improved.Therefore provide that a kind of discharge standard is high, it is white to disappear
The good incineration flue gas wet process deacidifying device of effect and deacidifying flue gas technique are problems to be solved by this invention.
Summary of the invention
It is an object of the invention to provide in place of overcome the deficiencies in the prior art, a kind of discharge standard is high, the white effect that disappears is good
Incineration flue gas wet process deacidifying device and deacidifying flue gas technique.
In order to achieve the above objectives, the technical solution adopted by the present invention are as follows: a kind of incineration flue gas wet process deacidifying device is provided,
It is characterized by comprising cooling tower, wet scrubber tower, acid mist coagulators, smoke re-heater, and four are sequentially connected by pipeline；
From bottom to top it is arranged in tower in the wet scrubber tower tower and recycles liquid case, gas feed, level-one gas distributor, filler, first
Spray system, secondary gas distributor, level-one demisting layer, second level demisting layer and gas vent；The level-one gas distributor
It include the permeability cylinder and column plate that top is equipped with lid umbrella with secondary gas distributor, tower body is separated and set by the column plate
Set discharge outlet；The discharge outlet of the level-one gas distributor is connected to by pipeline with tower outer circulation liquid case；The tower outer circulation liquid
Case also passes through circulation liquid case in circulating line and the first spray system, tower and is respectively connected with logical, setting heat exchange on the circulation line
Device；The cooling tower is the double-deck falling liquid film wetted wall tower, including outer wall, inner wall, the second spray system and gas cooling chamber；The gas
Cooling chamber is arranged among inner wall；Supplement heat rejecter chamber, the inner wall upper end setting are set in interlayer between the outer wall and inner wall
At least one overflow port；Second spray system is connected by pipeline with circulation liquid case in the tower of the wet scrubber tower；
Supplement heat rejecter chamber lower part is connected by pipeline with circulation liquid case in the tower of the wet scrubber tower；The acid mist coagulator
For horizontal tower, if several main demisters；The main demister includes demisting layer and its left and right sides is arranged and is directed toward demisting layer
Third spray system.
As a preferred embodiment, the cooling tower include the high-temperature gas entrance being connected to gas cooling top of chamber and
The low temperature gas liquid outlet being connected to gas cooling bottom of chamber portion；The supplement heat rejecter bottom of chamber portion of the cooling tower is additionally provided with back taper
Repair evacuation port.
As a preferred embodiment, the acid mist coagulator also sets up terminal demisters close to exit；The terminal is removed
Day with fog includes demisting layer and its side far from the outlet of acid mist coagulator is arranged in, and is directed toward the third spray system of demisting layer
System.
As a preferred embodiment, the filler is made of several unit of structured packing, and the filler unit setting is several
To the thin columnar protrusions of its internal stretch.
As a kind of more preferable scheme, the protrusion is end cone hemispherical.
As a preferred embodiment, the level-one gas distributor, secondary gas distributor cylinder hollow space it is equal
It penetrates corresponding column plate and is connected with tower body inner space.
As a preferred embodiment, the level-one demisting layer is PP folded plate, second level demisting layer is PP silk screen；The level-one is removed
Mist layer, second level demisting layer lower part are respectively provided with reversed spray system.
It as a preferred embodiment, further include the air-introduced machine being arranged between acid mist coagulator and smoke re-heater.
A kind of deacidifying flue gas technique using above-mentioned incineration flue gas wet process deacidifying device, it is characterised in that: including following step
It is rapid:
(1) incineration flue gas enters cooling tower, contacts and cools down with alkaline circulation fluid；
(2) incineration flue gas enters wet scrubber tower, and the alkaline circulation fluid adverse current for spraying out with wet scrubber tower spray system connects
Touching carries out washing and cooling humidity reduction；Wet scrubber tower is discharged in the incineration flue gas after washing；
The alkaline circulation fluid or cooling tower of the wet scrubber tower are added to after the cooling condensation of the water vapour of the incineration flue gas
Alkaline circulation fluid in；
(3) incineration flue gas enters acid mist coagulator, passes through main demister；The spray system of the main demister is opposite to be sprayed, and is mentioned
Humidity around the high demisting layer of main demister；Liquid when incineration flue gas is by the demisting layer of main demister, in incineration flue gas
Drop, desirable particle size become larger and condense on the demisting layer of demister, are rinsed away later；Treated incineration flue gas discharge
Acid mist coagulator；
(4) incineration flue gas reheats in smoke re-heater, later discharge system.
As a preferred embodiment, the flow velocity that incineration flue gas enters cooling tower in the step (1) is 2-5m/s；Burn cigarette
Gas is 1-3s in the cooling tower residence time；Temperature when incineration flue gas enters cooling tower is greater than 180 DEG C；Incineration flue gas leaves cooling
Temperature when tower is 70-80 DEG C；
It is 1-2m/s that incineration flue gas, which enters the flow velocity of wet scrubber tower, in the step (2)；Incineration flue gas stops in wet scrubber tower
Staying the time is 2-4s；Temperature when incineration flue gas leaves wet scrubber tower is 55-60 DEG C；Alkaline circulation fluid is by the first spray system
Temperature when spraying is controlled at 45-50 DEG C；
It is 1-3m/s that incineration flue gas, which enters the flow velocity of acid mist coagulator, in the step (3)；Incineration flue gas stops in acid mist coagulator
Staying the time is 1.5-3s；The flow velocity of third spray system spray is 1.5-3m/s；
Incineration flue gas is heated to 135 DEG C or more in smoke re-heater in the step (4)；Incineration flue gas contains when discharge system
SO2Lower than 50mg/M3, containing HCL be lower than 10mg/M3, containing HF be lower than 1mg/M3。
The working principle of the invention:
1, the incineration flue gas of high temperature, is introduced into cooling tower and contacts with alkaline circulation fluid and cool down, and temperature is made to drop to 70-80 DEG C；
Alkali neutralization suction is carried out with the alkaline circulation fluid (such as 30wt%NaOH solution) sprayed in the filler in wet scrubber tower later
Receive and cooling humidity reduction, in wet scrubber tower in and acidic materials and tentatively except water mist the drop of 10um or more (removing)；Later
It is condensed in acid mist coagulator outside tower by main demister, removal size is less than the droplet particles and solid of 10um
Grain；Purified low temperature and low humidity flue gas is sent into smoke re-heater and is warming up to acid dew point or more, is finally discharged from exhaust pipe, discharge
Flue gas contains SO2Lower than 50mg/M3, containing HCL be lower than 10mg/M3, containing HF be lower than 1mg/M3, realize minimum discharge and without white cigarette function.
2, circulation liquid case and tower outer circulation liquid case in present invention setting tower.The wherein alkali in the circulation liquid case of wet scrubber tower
Property circulation fluid is transported to the second spray system and supplement heat rejecter chamber of cooling tower by circulating pump；Spray system recycles alkalinity
Liquid sprays out, cools down to high temperature incineration flue gas；Alkaline circulation fluid in supplement heat rejecter chamber is overflowed from overflow port, in cooling tower
Inner wall forms the protection wet film that constantly flowing updates, and assists the tower body for cooling down and protecting cooling tower to incineration flue gas；It
Alkaline circulation fluid passes through pipeline with flue gas together and enters wet scrubber tower afterwards, is fallen into tower again in circulation liquid case；Alkalinity circulation
Liquid can radiate when by pipeline by the way that pipeline is cooling, reduce the burden of subsequent cooling.
Alkaline circulation fluid in tower outer circulation liquid case after 45-50 DEG C, passes through wet scrubbing by heat exchanger control temperature
First spray system of tower, which sprays, washs flue gas and is cooled down, and alkaline circulation fluid is coagulated together with because of flue gas cool-down later
It forges the moisture come and flows back to tower outer circulation liquid case from column plate together, be transported to again via the cooling rear portion of heat exchanger later
First spray system, another part, which is transported in tower, recycles liquid case, and two-part ratio can be controlled flexibly according to the actual situation
System.
The beneficial technical effect of the present invention lies in: provide that a kind of discharge standard is high, the good incineration flue gas of white effect that disappears is wet
Method deacidifying device and deacidifying flue gas technique.
1, the present invention passes through the stable absorption and dehumidification demisting of filler, realizes the depickling of high efficiency wet process, arranges the ultralow row of mouth
It puts: containing SO2Lower than 50mg/M3, containing HCL be lower than 10mg/M3, containing HF be lower than 1mg/M3, up to European Union Emission standard, it is far below state
Internal standard.
2, present invention removing SO2Efficiency 99.5% or more, have to water vapour, acid mist, salt fog, solid particulate matter and subtract
Effect is arranged, these substances are not measured in existing discharge standard, but are also the major reason of environmental pollution.Therefore the present invention is to reduction
Haze contributes, and is conducive to the protection of environment.
3, droplet condensation and smoke re-heater of the present invention by the cooling and dehumidification, acid mist coagulator of wet scrubber tower
Heating, achieve the purpose that outlet does not generate white cigarette.
4, the present apparatus dexterously connects the cooling device that liquid case and cooling tower are recycled in the tower of wet scrubber tower, makes entirety
Structure is more compact and simple.
5, the cooling and dehumidification effect of wet scrubber tower of the present invention is obvious, to obtain a large amount of dehumidification water, and adds to alkali
Property circulation fluid, reduce the additional amount of extraneous supplement water, saved water resource.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the structural schematic diagram of the preferred embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the cooling tower of the preferred embodiment of the present invention.
Fig. 3 is the structural schematic diagram of the wet scrubber tower of the preferred embodiment of the present invention.
Fig. 4 is the structural schematic diagram of the acid mist coagulator of the preferred embodiment of the present invention.
Fig. 5 is the positive structure diagram of the filler unit of the preferred embodiment of the present invention.
Fig. 6 is the overlooking structure diagram of the filler unit of the preferred embodiment of the present invention.
Fig. 7 is the appearance diagram of the thin columnar protrusions of the preferred embodiment of the present invention.
In figure: 1 being cooling tower, 10 be emergency shower system, 11 be outer wall, 12 be inner wall, 13 be the second spray system, 14
It is auxiliary cooling chamber for gas cooling chamber, 15,151 be inlet, 16 be overflow port, 17 be high-temperature gas entrance, 18 is low temperature
Gas liquid outlet, 19 be maintenance evacuation port, 2 be wet scrubber tower, 21 be circulation liquid case in tower, 22 be gas feed, 23 be level-one
Gas distributor, 24 be filler, 241 be filler unit, 241a is thin columnar protrusions, 241b is hollow out lamella, 25 is the first spray
Leaching system, 26 be secondary gas distributor, 27 be level-one demisting layer, 28 be second level demisting layer, 29 be gas vent, 3 be acid mist
Coagulator, 31 for main demister, 311 be the demisting layer of acid mist coagulator, 312 be third spray system, 32 be terminal demisters,
4 it is smoke re-heater, 5 be air-introduced machine, 6 be exhaust pipe, 71 be cylinder, 72 be column plate, 73 be discharge outlet, 74 is reversed spray system
System, 8 be tower outer circulation liquid case, 91 be circulating line, 911 be that first circulation pumps, 912 is heat exchanger, 92 is transfer pipeline, 921
For second circulation pump.
Specific embodiment
Presently in connection with drawings and examples, the present invention is described in further detail, and following embodiment is descriptive
, it is not restrictive, this does not limit the scope of protection of the present invention.The structure that is not described in detail in the invention patent, even
Relationship and method are connect, can be understood as common knowledge in the art.
As shown in figs. 1-7, a kind of incineration flue gas wet process deacidifying device, it is characterised in that: including cooling tower 1, wet scrubbing
Tower 2, acid mist coagulator 3, air-introduced machine 5, smoke re-heater 4, exhaust pipe 6, six are sequentially connected by pipeline and connect.
Cooling tower 1 is FRP hollow cylinder.Using FRP high temperature resistant, the glass reinforced plastic of acid and alkali-resistance, the resistance to of cooling tower 1 is improved
High temperature, acid and alkali-resistance effect.
Cooling tower 1 is the double-deck falling liquid film wetted wall tower, including outer wall 11, inner wall 12, the second spray system 13, gas cooling chamber
14, supplement heat rejecter chamber 15, high-temperature gas entrance 17, low temperature gas liquid outlet 18；The space that inner wall 12 is surrounded is gas cooling
Chamber 14, supplement heat rejecter chamber 15 are arranged in the interlayer between outer wall 11 and inner wall 12；At least one overflow is arranged in 12 upper end of inner wall
Mouth 16.It is connected at the top of high-temperature gas entrance 17 and gas cooling chamber 14, low temperature gas liquid outlet 18 and 14 bottom of gas cooling chamber connect
It is logical.The setting of supplement heat rejecter chamber 15 be in order to assist the second spray system 13 to be cooled down, and to the tower body of cooling tower 1 carry out
Protection.Inlet 151 is arranged in 15 lower part of supplement heat rejecter chamber, and the alkaline circulation fluid for that will cool down and wash incineration flue gas is infused from this
Enter；As the increase liquid level of injection rate rises, final alkalinity circulation fluid is overflowed full of supplement heat rejecter chamber 15 and from overflow port 16, into
Enter gas cooling chamber 14；Alkaline circulation fluid flows down on the inside of inner wall 12, forms the protection wet film that constantly flowing updates.The protection
Wet film is contacted with incineration flue gas can assist the second spray system 13 to cool down and wash flue gas, reduce by the second spray system
The 13 spray dead angles that may be generated increase the time of alkaline circulation fluid and high temperature incineration smoke contacts, to improve cooling
Effect and efficiency.It also can protect 1 tower body of cooling tower simultaneously not encroached on by high temperature, extend the service life of cooling tower 1.
15 bottom of supplement heat rejecter chamber of cooling tower 1 is provided with the maintenance evacuation port 19 of back taper.By repairing evacuation port 19
Convenient for the maintenance of cooling tower 1, the more conducively maintenance of everyday devices, the service life of equipment is further also improved；Maintenance emptying
Mouth 19 is designed using back taper, is not only improved and is sealed processing to it when maintenance evacuation port 19 is not used, nor affects on
The emptying efficiency of evacuation port 19 is repaired when repair and maintenance.In addition cooling tower 1 also sets up emergency shower system 10 and external water source phase
Connection, for increasing cooling dynamics when gas temperature is excessively high or other emergencies.
From bottom to top it is arranged in tower in 2 tower of wet scrubber tower and recycles liquid case 21, gas feed 22, level-one gas distributor
23, filler 24, the first spray system 25, secondary gas distributor 26, level-one demisting layer 27, second level demisting layer 28 and gas go out
Mouth 29.The gas feed 22 of wet scrubber tower 2 is connected with the low temperature gas-liquid mouth 18 of cooling tower 1 by pipeline.
Level-one gas distributor 23 and secondary gas distributor 26 include that top is equipped with lid umbrella, and venthole is arranged in side wall
Permeability cylinder 71 and column plate 72, the hollow space of cylinder 71 penetrate the reserved opening of corresponding column plate 72 and in tower body
Portion space is connected.Column plate 72 is fixed together with tower wall, and wet scrubber tower 2 is separated, while column plate 72 also sets up draining
Mouth 73.The setting of level-one gas distributor 23, secondary gas distributor 26 can make incineration flue gas with this configuration in tower
Distribution can be more uniform, is more advantageous to contact of the alkaline circulation fluid with incineration flue gas, improves incineration flue gas alkaline washing and cooling
Effect.
Level-one demisting layer 27 is PP folded plate, second level demisting layer 28 is PP silk screen.The two lower part is respectively provided with and external water source phase
Reversed second spray system 134 of connection, the drop for condensing level-one demisting layer 27, second level demisting layer 28 spray.
Filler 24 is made of several unit of structured packing 241, and the material of filler unit 241 is Kynoar.Filler list
Member 241 is the frame structure of cuboid, and top and is internally provided with several hollow out lamella 241b at bottom.In filler unit
Several thin columnar protrusions 241a are arranged in the lower surface of the hollow out lamella 241b at 241 tops；Hollow out piece in 241 bottom of filler unit
Several thin columnar protrusions 241a are arranged in the upper surface of layer 241b；The upper surface of hollow out lamella 241b inside filler unit 241
It is several to 241 internal stretch of filler unit that several thin columnar protrusions 241a(i.e. hollow out lamella 241b settings are respectively provided with lower surface
Thin columnar protrusions 241a).Protrusion 241a is hemispherical cone (i.e. bottom thick end is thin) in end.Filler unit
241 design increases the contact area of gas-liquid, so that filler 24 is had high surface area and high open volume, substantially reduces pressure
It drops, increase mass-transfer efficiency, to improve the efficiency of washing and cooling, reduce the tower diameter of wet scrubber tower 2, reduce energy
The consumption in source, saves the energy and cost.In addition the frame structure of cuboid is more conducive to piling up for filler unit 241, makes to set
The phenomenon that filler 24 will not generate mutual intussusception after received shipment turns will not detract efficiency or generate short stream.Vinylidene material simultaneously
Selection make filler 24 more high temperature resistant and chemical substance.And to be designed as semicircle spherical for the end of thin columnar protrusions 241a, it is more sharp
In the contact area for increasing gas/liquid.
The present apparatus also sets up tower outer circulation liquid case 8, and tower outer circulation liquid case 8 is connected with external source and lye source.Simultaneously
Tower outer circulation liquid case 8 is also respectively connected with logical, circulation pipe by circulation liquid case 21 in circulating line 91 and the first spray system 25, tower
First circulation is set on road 91 and pumps 911 and heat exchanger 912.In addition the discharge outlet 73 of level-one gas distributor 23 also by pipeline and
Tower outer circulation liquid case 8 is connected to.The alkaline circulation fluid that the storage of tower outer circulation liquid case 8 is used for wet scrubber tower 2 is set, compared to routine
Design, due to pipeline cooling effect than in tower/device in good cooling effect, therefore alkaline circulation fluid is followed returning to outside tower by pipeline
Primary cooling has been carried out when ring liquid case 8, to alleviate the burden of heat exchanger 912.
Second spray system 13 of cooling tower 1, supplement heat rejecter chamber 15 pass through transfer pipeline 92 and wet scrubber tower 2 respectively
Circulation liquid case 21 is connected in tower, and second circulation is arranged on transfer pipeline 92 and pumps 921.Supplement heat rejecter chamber 15 is by being arranged at it
The inlet 151 of lower part is connected with Ta Nei circulation liquid case 21.Alkalinity is provided to cooling tower 1 using circulation liquid case 21 in tower to follow
Ring liquid, takes full advantage of device structure, contacts cooling tower 1 and wet scrubber tower 2 even closer, makes package unit structure more
It is simple and compact.In addition maintenance evacuation port 19 can also be connected by pipeline with circulation liquid case 21 in the tower of wet scrubber tower 2,
For emptying alkaline circulation fluid when maintenance.
Acid mist coagulator 3 is horizontal tower, and the main demister 31 of two-stage is arranged；Main demister 31 includes demisting layer 311 and sets
It sets its left and right sides and is directed toward the third spray system 312 of demisting layer 311；The spray system 312 of main demister 31 can opposite spray
Clear water out is drenched, to improve the humidity near demisting layer 311, causes the oversaturated environment in the region.Incineration flue gas is in master
When passing through at the demisting layer 311 of demister 31, small acid mist drop in incineration flue gas since core condenses and accumulation process, at
The particle acid mist drop of a length of 10 micron level, to be easy to be agglomerated by the interception of demisting layer 311；Simultaneously as environment is opposite
The increase of humidity, Gibbs energy corresponding to the solid particulate matter solution in incineration flue gas become smaller, and solid particle is caused to absorb ring
Moisture in border and become larger (moisture absorption of particle increases), the particulate matter become large-sized is easy to condense on demisting layer 311.
Acid mist coagulator 3 also sets up terminal demisters 32 close to exit；Terminal demisters 32 include demisting layer 311 and
Its side exported far from acid mist coagulator 3 is set, and is directed toward the third spray system 312 of demisting layer 311.The terminal demisting
Device 32 can be used for further condensing acid mist drop and solid particle, remove, and improve the effect for removing droplet and solid particle.
Third spray system 312 is connected with external source.Demisting layer 311 is silk screen demisting layer.
Smoke re-heater 4 is the conventional equipment for flue gas, such as steam heater.
A kind of deacidifying flue gas technique using above-mentioned incineration flue gas wet process deacidifying device, comprising the following steps:
1, under the action of air-introduced machine 5, (temperature is greater than 180 DEG C to the incineration flue gas of high temperature, contains SO2, HCL, HF) and from high-temperature gas
Entrance 17 enters cooling tower 1, and from top to bottom moves, and the flow velocity into cooling tower 1 is 5m/s.
Second circulation pump 921 will recycle the alkaline circulation fluid of liquid case 21 (such as 30% simultaneously in the tower of wet scrubber tower 2
NaOH solution) the second spray system 13 and supplement heat rejecter chamber 15 be transported to by transfer pipeline 92.Second spray system 13 will
Alkaline circulation fluid sprays out, with high temperature incineration smoke contacts, cools down to it, and carry out primary wash；Alkalinity circulation simultaneously
Liquid injects supplement heat rejecter chamber 15, and as the increase liquid level of injection rate rises, final alkalinity circulation fluid is full of supplement heat rejecter chamber 15 simultaneously
It is overflowed from overflow port 16, into gas cooling chamber 14；Alkaline circulation fluid flows down on the inside of inner wall 12, forms constantly flowing and updates
Protection wet film.The protection wet film is contacted with incineration flue gas can assist the second spray system 13 to cool down and wash flue gas
It washs, alkaline circulation fluid may be increased and burn with high temperature at the spray dead angle that 1 side wall of cooling tower generates by reducing by the second spray system 13
The time for burning smoke contacts can obviously cool down the burning cigarette of high temperature in the short period to improve cooling effect and efficiency
Gas.Incineration flue gas and alkaline circulation fluid by cooling are discharged from the low temperature gas-liquid mouth 18 of cooling tower 1, and incineration flue gas is in cooling tower
1 residence time was 1s.
The step mainly also carries out preliminary depickling to high temperature incineration flue gas cool-down simultaneously；The incineration flue gas after the step
Cool down into the saturation wet flue gas that temperature is 70-80 DEG C, moisture percentage is 30-35%.
2, the incineration flue gas by cooling processing is entered in wet scrubber tower 2 by gas feed 22 and is from bottom to top moved,
The flow velocity that incineration flue gas enters wet scrubber tower 2 is 2.5m/s；And the alkaline circulation fluid of cooled incineration flue gas is returned by cooling tower 1
It flows into the tower of wet scrubber tower 2 in circulation liquid case 21.
Incineration flue gas by 71 bottom of cylinder of level-one gas distributor 23 enters the hollow space of cylinder 71 and from cylinder
71 venthole discharge continues up；Incineration flue gas is distributed after level-one gas distributor 23 can be more uniform, more has
Contact conducive to alkaline circulation fluid with incineration flue gas improves the effect of incineration flue gas alkaline washing.
Alkaline circulation fluid in tower outer circulation liquid case 8 is transported to the by first circulation pump 911 after 912 temperature control of heat exchanger
One spray system 25 sprays, and the temperature of alkalinity circulation fluid is controlled at 45 DEG C when spray.
Flue gas and alkaline circulation fluid counter current contacting at filler 24 carry out washing and cooling humidity reduction, the acidic materials in flue gas
Neutralization reaction occurs with alkaline circulation fluid, while the temperature for reducing flue gas makes Water vapor condensation therein get off, and reduces flue gas
In humidity, while obtaining large quantity of moisture；Flue gas after washing continues up；And alkaline circulation fluid and condensation after washing
Moisture is dropped on column plate 72 and is flow back into tower outer circulation liquid case 8 by the road by discharge outlet 73, cold via heat exchanger 912 later
But rear portion is transported to the first spray system 25 again, and another part, which is transported in tower, recycles liquid case 21.To replenish
The moisture lost when the cooling incineration flue gas of cooling tower 1, realizes system moisture substantial equilibrium, does not need largely to keep the skin wet.Due to
Pipeline cooling effect than in tower/device in good cooling effect, therefore alkaline circulation fluid is when returning to tower outer circulation liquid case 8 by pipeline
Primary cooling has been carried out, to alleviate the burden of heat exchanger 912.
Incineration flue gas is distributed again by secondary gas distributor 26 later, and the temperature of flue gas further declines, and
Condense the vapor in flue gas further by level-one demisting layer 27, second level demisting layer 28, to remove in flue gas
The drop of 10um or more is finally discharged from gas vent 29, and incineration flue gas stops 2 to stay the time to be 2s in wet scrubber tower.It condenses in
Drop on level-one demisting layer 27, second level demisting layer 28 falls on secondary gas distributor by the shower of reversed spray system 74
On 26 column plate 72, cesspool is finally entered.
The step is mainly the acidic materials neutralized in incineration flue gas, while making the Water vapor condensation in flue gas by cooling
Get off, removes the bulky grain drop in incineration flue gas.The tower exit temperature of flue gas is 55 DEG C after the step.
3, incineration flue gas enters acid mist coagulator 3, and flow velocity when entrance is 3m/s, passes through the main demister 31 of two-stage；It is each
The spray system 312 of the main demister 31 of grade is opposite to spray out clear water, and the flow velocity of spray is 3m/s, is improved near demisting layer 311
Humidity, cause the oversaturated environment in the region.When incineration flue gas passes through at the demisting layer 311 of main demister 31, burn
Small acid mist drop in flue gas grows into the particle acid mist drop of 10 micron levels due to core condensation and accumulation process, and
It is agglomerated by the interception of demisting layer 311；Simultaneously with the increase of envionmental humidity, the solid particulate matter in incineration flue gas absorbs
Moisture in environment and become larger (moisture absorption of particle increases), the particulate matter become large-sized is agglomerated on demisting layer 311；Under condensation
The drop and solid particle come is finally washed out by clear water, and the water of flushing is discharged into cesspool；Treated incineration flue gas is logical
Discharge acid mist coagulator 3 after terminal demisters 32 further condense acid mist drop and solid particle is crossed, flue gas is condensed in acid mist
3 residence time of device is 1.5s.
The step is mainly the droplet particles and solid particle for removing size and being less than 10um, further increases incineration flue gas
Cleanliness, while realize eliminate white cigarette purpose.
4, purified low temperature and low humidity flue gas is heated to 135 DEG C or more (i.e. more than dew points) in smoke re-heater 4, into
One step goes white-smoke-removing, is finally discharged from exhaust pipe 6, and the flue gas of discharge contains SO2Lower than 50mg/M3, containing HCL be lower than 10mg/M3, contain
HF is lower than 1mg/M3。
Based on the above description of the preferred embodiments of the present invention, through the above description, related personnel completely can be with
Without departing from the scope of the technological thought of the present invention', various changes and amendments are carried out.The technical scope of this invention
It is not limited to the contents of the specification, it is necessary to determine the technical scope according to the scope of the claims.
Claims (10)
1. a kind of incineration flue gas wet process deacidifying device, it is characterised in that: including cooling tower, wet scrubber tower, acid mist coagulator, cigarette
Gas reheater, four are sequentially connected by pipeline；From bottom to top it is arranged in tower in the wet scrubber tower tower and recycles liquid case, gas
Import, level-one gas distributor, filler, the first spray system, secondary gas distributor, level-one demisting layer, second level demisting layer with
And gas vent；The level-one gas distributor and secondary gas distributor include top be equipped with the permeability cylinder of lid umbrella with
And tower body is separated and discharge outlet is arranged by column plate, the column plate；The discharge outlet of the level-one gas distributor passes through pipeline and tower
The connection of outer circulation liquid case；The tower outer circulation liquid case, which also passes through, recycles liquid case difference in circulating line and the first spray system, tower
It is connected, heat exchanger is set on the circulation line；The cooling tower is the double-deck falling liquid film wetted wall tower, including outer wall, inner wall, second
Spray system and gas cooling chamber；The gas cooling chamber is arranged among inner wall；It is set in interlayer between the outer wall and inner wall
Supplement heat rejecter chamber is set, at least one overflow port is arranged in the inner wall upper end；Second spray system by pipeline with it is described wet
Circulation liquid case is connected in the tower of formula scrubbing tower；Supplement heat rejecter chamber lower part passes through in the tower of pipeline and the wet scrubber tower
Circulation liquid case is connected；The acid mist coagulator is horizontal tower, if several main demisters；The main demister include demisting layer with
And its left and right sides is set and is directed toward the third spray system of demisting layer.
2. incineration flue gas wet process deacidifying device according to claim 1, it is characterised in that: the cooling tower includes and gas
The high-temperature gas entrance being connected at the top of cooling chamber and the low temperature gas liquid outlet being connected to gas cooling bottom of chamber portion；The cooling tower
Supplement heat rejecter bottom of chamber portion be additionally provided with the maintenance evacuation port of back taper.
3. incineration flue gas wet process deacidifying device according to claim 1, it is characterised in that: the acid mist coagulator is close to out
Terminal demisters are also set up at mouthful；The terminal demisters include demisting layer and it is arranged in exports far from acid mist coagulator
Side, and it is directed toward the third spray system of demisting layer.
4. incineration flue gas wet process deacidifying device according to claim 1, it is characterised in that: the filler regular is filled out by several
Several thin columnar protrusions to its internal stretch are arranged in material unit composition, the filler unit.
5. incineration flue gas wet process deacidifying device according to claim 4, it is characterised in that: the protrusion is that end is in hemisphere
The cone of shape.
6. incineration flue gas wet process deacidifying device according to claim 1, it is characterised in that: the level-one gas distributor,
The hollow space of the cylinder of secondary gas distributor penetrates corresponding column plate and is connected with tower body inner space.
7. incineration flue gas wet process deacidifying device according to claim 1, it is characterised in that: the level-one demisting layer is PP folding
Plate, second level demisting layer are PP silk screen；The level-one demisting layer, second level demisting layer lower part are respectively provided with reversed spray system.
8. incineration flue gas wet process deacidifying device according to claim 1, it is characterised in that: further include that setting is condensed in acid mist
Air-introduced machine between device and smoke re-heater.
9. a kind of deacidifying flue gas technique using incineration flue gas wet process deacidifying device a method as claimed in any one of claims 1-8, special
Sign is: the following steps are included:
(1) incineration flue gas enters cooling tower, contacts and cools down with alkaline circulation fluid；
(2) incineration flue gas enters wet scrubber tower, and the alkaline circulation fluid adverse current for spraying out with wet scrubber tower spray system connects
Touching carries out washing and cooling humidity reduction；Wet scrubber tower is discharged in the incineration flue gas after washing；
The alkaline circulation fluid or cooling tower of the wet scrubber tower are added to after the cooling condensation of the water vapour of the incineration flue gas
Alkaline circulation fluid in；
(3) incineration flue gas enters acid mist coagulator, passes through main demister；The spray system of the main demister is opposite to be sprayed, and is mentioned
Humidity around the high demisting layer of main demister；Liquid when incineration flue gas is by the demisting layer of main demister, in incineration flue gas
Drop, desirable particle size become larger and condense on the demisting layer of demister, are rinsed away later；Treated incineration flue gas discharge
Acid mist coagulator；
(4) incineration flue gas reheats in smoke re-heater, later discharge system.
10. deacidifying flue gas technique according to claim 9, it is characterised in that: incineration flue gas enters cold in the step (1)
But the flow velocity of tower is 2-5m/s；Incineration flue gas is 1-3s in the cooling tower residence time；Incineration flue gas enters temperature when cooling tower
Greater than 180 DEG C；Temperature when incineration flue gas leaves cooling tower is 70-80 DEG C；
It is 1-2m/s that incineration flue gas, which enters the flow velocity of wet scrubber tower, in the step (2)；Incineration flue gas stops in wet scrubber tower
Staying the time is 2-4s；Temperature when incineration flue gas leaves wet scrubber tower is 55-60 DEG C；Alkaline circulation fluid is by the first spray system
Temperature when spraying is controlled at 45-50 DEG C；
It is 1-3m/s that incineration flue gas, which enters the flow velocity of acid mist coagulator, in the step (3)；Incineration flue gas stops in acid mist coagulator
Staying the time is 1.5-3s；The flow velocity of third spray system spray is 1.5-3m/s；
Incineration flue gas is heated to 135 DEG C or more in smoke re-heater in the step (4)；Incineration flue gas contains when discharge system
SO2Lower than 50mg/M3, containing HCL be lower than 10mg/M3, containing HF be lower than 1mg/M3。
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| CN201811624421.6A CN109794157A (en) | 2018-12-28 | 2018-12-28 | A kind of incineration flue gas wet process deacidifying device and deacidifying flue gas technique |
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| CN201811624421.6A CN109794157A (en) | 2018-12-28 | 2018-12-28 | A kind of incineration flue gas wet process deacidifying device and deacidifying flue gas technique |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110115924A (en) * | 2019-05-27 | 2019-08-13 | 凤阳海泰科能源环境管理服务有限公司 | A kind of garbage power plant smoke depth depickling takes off white system and method |
| CN110394008A (en) * | 2019-08-27 | 2019-11-01 | 江苏新宏大集团有限公司 | One kind being used for urea prilling tower tail gas horizontal washing tower and application method |
| CN111151113A (en) * | 2020-01-19 | 2020-05-15 | 云南净美环保科技有限公司 | Waste incineration flue gas sprays deacidification tower |
| CN112604448A (en) * | 2020-12-17 | 2021-04-06 | 宜昌江峡船用机械有限责任公司 | Garbage incinerator spray tower and garbage incinerator |
| CN113398741A (en) * | 2021-05-28 | 2021-09-17 | 北京基亚特环保科技有限公司 | Integration deacidification defogging tower device |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995033552A1 (en) * | 1994-06-09 | 1995-12-14 | Abb Environmental Systems | Improved entrainment separator for high velocity gases and reheating of scrubber gases |
| CN2899917Y (en) * | 2006-05-25 | 2007-05-16 | 郝成海 | Smoke desulfurizing and denitrifying device by ammonia method |
| CN201380039Y (en) * | 2009-01-23 | 2010-01-13 | 江苏新世纪江南环保有限公司 | Double-tower flue gas desulphurization device |
| CN102000490A (en) * | 2010-11-25 | 2011-04-06 | 东南大学 | Control method for aerosol in flue gas desulfurization by utilizing ammonia method and master desulfurizing tower |
| CN201807285U (en) * | 2010-09-28 | 2011-04-27 | 罗忠凯 | Wet-type combination smoke dust removal desulphurization device |
| CN202199258U (en) * | 2011-08-23 | 2012-04-25 | 浙江省环境工程有限公司 | Waste gas treatment device for scouring pad oven |
| CN203253343U (en) * | 2013-05-09 | 2013-10-30 | 嘉禾县绿阳环保设备厂 | High-temperature stream waste gas purifying device |
| CN105214464A (en) * | 2015-10-26 | 2016-01-06 | 新煤化工设计院（上海）有限公司 | A kind of multi-stage spray fluidization tail gas washing tower |
| CN206215021U (en) * | 2016-10-26 | 2017-06-06 | 启迪桑德环境资源股份有限公司 | A kind of wet type flue gas desulphurization system of waste incineration |
| CN208075606U (en) * | 2018-02-05 | 2018-11-09 | 苏州艾特斯环保设备有限公司 | A kind of flue gas wet sprinkling cooling tower |
| CN108854455A (en) * | 2018-07-11 | 2018-11-23 | 苏州艾特斯环保设备有限公司 | A kind of high temperature and humidity flue gas wet process cooling humidity reduction method |
| CN209828700U (en) * | 2018-12-28 | 2019-12-24 | 苏州艾特斯环保设备有限公司 | Wet deacidification device for incineration flue gas |
-
2018
- 2018-12-28 CN CN201811624421.6A patent/CN109794157A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995033552A1 (en) * | 1994-06-09 | 1995-12-14 | Abb Environmental Systems | Improved entrainment separator for high velocity gases and reheating of scrubber gases |
| CN2899917Y (en) * | 2006-05-25 | 2007-05-16 | 郝成海 | Smoke desulfurizing and denitrifying device by ammonia method |
| CN201380039Y (en) * | 2009-01-23 | 2010-01-13 | 江苏新世纪江南环保有限公司 | Double-tower flue gas desulphurization device |
| CN201807285U (en) * | 2010-09-28 | 2011-04-27 | 罗忠凯 | Wet-type combination smoke dust removal desulphurization device |
| CN102000490A (en) * | 2010-11-25 | 2011-04-06 | 东南大学 | Control method for aerosol in flue gas desulfurization by utilizing ammonia method and master desulfurizing tower |
| CN202199258U (en) * | 2011-08-23 | 2012-04-25 | 浙江省环境工程有限公司 | Waste gas treatment device for scouring pad oven |
| CN203253343U (en) * | 2013-05-09 | 2013-10-30 | 嘉禾县绿阳环保设备厂 | High-temperature stream waste gas purifying device |
| CN105214464A (en) * | 2015-10-26 | 2016-01-06 | 新煤化工设计院（上海）有限公司 | A kind of multi-stage spray fluidization tail gas washing tower |
| CN206215021U (en) * | 2016-10-26 | 2017-06-06 | 启迪桑德环境资源股份有限公司 | A kind of wet type flue gas desulphurization system of waste incineration |
| CN208075606U (en) * | 2018-02-05 | 2018-11-09 | 苏州艾特斯环保设备有限公司 | A kind of flue gas wet sprinkling cooling tower |
| CN108854455A (en) * | 2018-07-11 | 2018-11-23 | 苏州艾特斯环保设备有限公司 | A kind of high temperature and humidity flue gas wet process cooling humidity reduction method |
| CN209828700U (en) * | 2018-12-28 | 2019-12-24 | 苏州艾特斯环保设备有限公司 | Wet deacidification device for incineration flue gas |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110115924A (en) * | 2019-05-27 | 2019-08-13 | 凤阳海泰科能源环境管理服务有限公司 | A kind of garbage power plant smoke depth depickling takes off white system and method |
| CN110394008A (en) * | 2019-08-27 | 2019-11-01 | 江苏新宏大集团有限公司 | One kind being used for urea prilling tower tail gas horizontal washing tower and application method |
| CN111151113A (en) * | 2020-01-19 | 2020-05-15 | 云南净美环保科技有限公司 | Waste incineration flue gas sprays deacidification tower |
| CN112604448A (en) * | 2020-12-17 | 2021-04-06 | 宜昌江峡船用机械有限责任公司 | Garbage incinerator spray tower and garbage incinerator |
| CN113398741A (en) * | 2021-05-28 | 2021-09-17 | 北京基亚特环保科技有限公司 | Integration deacidification defogging tower device |
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