CN108159854A - A kind of coal-burning boiler wet desulfurization system - Google Patents
A kind of coal-burning boiler wet desulfurization system Download PDFInfo
- Publication number
- CN108159854A CN108159854A CN201711224456.6A CN201711224456A CN108159854A CN 108159854 A CN108159854 A CN 108159854A CN 201711224456 A CN201711224456 A CN 201711224456A CN 108159854 A CN108159854 A CN 108159854A
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- Prior art keywords
- aeration
- tube
- oxidation
- coal
- pipe
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 29
- 230000023556 desulfurization Effects 0.000 title claims abstract description 27
- 238000005273 aeration Methods 0.000 claims abstract description 126
- 230000003647 oxidation Effects 0.000 claims abstract description 33
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 33
- 238000003756 stirring Methods 0.000 claims abstract description 30
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims abstract description 8
- 238000005276 aerator Methods 0.000 claims abstract description 7
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 30
- 239000000347 magnesium hydroxide Substances 0.000 claims description 29
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 29
- 238000005507 spraying Methods 0.000 claims description 23
- 239000000779 smoke Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 19
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 13
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 9
- 239000000395 magnesium oxide Substances 0.000 claims description 8
- 238000006386 neutralization reaction Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 239000008235 industrial water Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 8
- 239000006227 byproduct Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- JESHZQPNPCJVNG-UHFFFAOYSA-L magnesium;sulfite Chemical compound [Mg+2].[O-]S([O-])=O JESHZQPNPCJVNG-UHFFFAOYSA-L 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/73—After-treatment of removed components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to a kind of coal-burning boiler wet desulfurization systems, and including desulfurizing tower, the bottom of the desulfurizing tower is additionally provided with installing plate, and the installing plate top forms catch basin, installation cavity is formed between the installing plate and the bottom plate of desulfurizing tower；Agitating shaft and the first aeration tube are provided in the catch basin, multiple blades are provided on the agitating shaft, multiple solarization air caps are provided on first aeration tube, the first Aeration fan and the first stirring motor are provided in the installation cavity.Oxidation and aeration pond is further included, the second aeration tube and mixing aeration device are provided in the oxidation and aeration pond, multiple solarization air caps are both provided on second aeration tube and mixing aeration device.The present invention has double aerators, and aeration effect is notable, fully oxidized can absorb SO2Absorbing liquid, and can save floor occupying area, reduce cost of investment and operating cost.
Description
Technical field
The present invention relates to technical field of waste gas treatment, and in particular to a kind of coal-burning boiler wet desulfurization system.
Background technology
Magnesium oxide method flue gas desulfurization technique administers market in fire coal boiler fume and is gradually promoted and applies, the market share
From 2005 less than 1%, until presently more than 6%, wet oxidation magnesium processes desulfurization technology has obtained the accreditation of more and more people.Using
Magnesium oxide method sulfur removal technology and desulfurization waste liquor is prepared into generation magnesium sulfite product, solve the desulfurization that traditional calcium method desulfurization generates
Gypsum treatment problem, but also can sulfuric acid be made using the processing of the equipment such as triple effect evaporation by later stage aerating oxidation
Magnesium byproduct, by-product sale income can be with the operation and maintenance costs of offset partial desulfurization device, from technology and economic angle all
There is larger market application advantage than traditional calcium method.
Desulphurization system by-product generating means are the important components of desulfurizer in desulfurizer, wherein aeration dress
Put be desulphurization system by-product generating means important component, but traditional aerator inefficiency is unfavorable for desulfurization system
The generation of system by-product seriously affects the formation efficiency of desulphurization system by-product generation, and current aerator floor space
Greatly, operating cost is excessively high, therefore a kind of desulfuration efficiency of offer is high, operating cost is low, floor space is small, aeration effect significantly fires
Coal burning boiler wet desulfurization system very it is necessary to.
Invention content
For the above problem of the prior art, the object of the present invention is to provide a kind of desulfuration efficiency height, operating costs
Low, the significant coal-burning boiler wet desulfurization system of aeration effect.
In order to achieve the above objectives, the technical solution adopted by the present invention is：A kind of coal-burning boiler wet desulfurization system, including de-
Sulphur tower, the desulfurizing tower have smoke inlet and exhanst gas outlet, and the smoke inlet is connected by ajutage with coal-burning boiler,
The exhanst gas outlet is connected by smoke exhaust pipe with chimney, is provided with booster fan on the ajutage, the booster fan with
First baffle door is provided between smoke inlet, bypass air hose, the bypass are also associated between the ajutage and smoke exhaust pipe
Second baffle door is provided on air hose；
The bottom of the desulfurizing tower is additionally provided with installing plate, and catch basin formed at the installing plate top, the installing plate with
Installation cavity is formed between the bottom plate of desulfurizing tower；Agitating shaft and the first aeration tube are provided in the catch basin, on the agitating shaft
Multiple blades are provided with, multiple solarization air caps are provided on first aeration tube, the first aeration wind is provided in the installation cavity
Machine and the first stirring motor；The first sealing bearing is provided in the middle part of the installing plate, first stirring motor passes through first
It seals bearing to be sequentially connected with agitating shaft, first Aeration fan is connected by the first check valve with the first aeration tube；Institute
It states the first aeration tube and includes the aeration bottom tube of circular ring shape set around agitating shaft, multiple blades, it is described to be aerated in bottom tube uniformly
Multiple aeration vertical branch are distributed with；During work, under the action of multiple blades, slurries in catch basin to catchment trench bottom into
Row washes away；
The desulfurizing tower top is disposed with the first spraying layer, the second spraying layer, third spraying layer from the top down, described
First spraying layer, the second spraying layer, third spraying layer are pumped respectively by first circulation, second circulation pump, third circulating pump are with collecting
Sink is connected；The catch basin is connected with magnesium hydroxide storage tank, and the catch basin draws pump and oxidation by slurries
Aeration tank is connected, and the oxidation and aeration pond is connected with the second Aeration fan；
One upper lateral part in the oxidation and aeration pond is provided with inlet tube, and another side lower part is provided with outlet tube；The oxidation
The second aeration tube and mixing aeration device are provided in aeration tank, is both provided on second aeration tube and mixing aeration device
Multiple solarization air caps；The mixing aeration device includes rotation center pipe, and multiple rows of stirring is vertically installed on the rotation center pipe
Branch pipe, the length for often arranging the stirring branch pipe is identical, and end is fixedly installed scraper plate；Second aeration tube is included around rotation
Turn the aeration bottom tube of the circular ring shape of central tube, stirring branch pipe and scraper plate setting, be evenly distributed in the aeration bottom tube multiple
It is aerated vertical branch；
The upper cover center in the oxidation and aeration pond, bottom wall central are correspondingly arranged on the second sealing bearing, third sealing respectively
Bearing, bottom wall lower part, the upper cover top in the oxidation and aeration pond are respectively arranged with the second Aeration fan, the second stirring motor, institute
State outer shroud, the second aeration tube phase that the second Aeration fan seals bearing by the second check valve, third check valve with third respectively
Connection, the lower end of the rotation center pipe are connected with the inner ring of third sealing bearing, and second stirring motor passes through second
Bearing is sealed to be sequentially connected with rotation center pipe.
Further, entrance spray equipment, the entrance spray equipment are additionally provided at the smoke inlet of the desulfurizing tower
It is connected by the 4th circulating pump with catch basin, the first spraying layer top is also disposed with demister and cleaning pipe；Also
It weighs feeder, magnesium hydroxide preparation vessel, magnesium hydroxide feeding engine including sequentially connected magnesia warehouse, spiral, the hydrogen
Magnesia feeding engine is connected with magnesium hydroxide storage tank；The outlet tube also successively with filter press, filtrate receiver, triple effect evaporator,
Crystallizer, centrifuge, fluid bed, packing machine are sequentially connected；Further include neutralization chamber, the neutralization chamber respectively with the magnesium hydroxide
Storage tank, slurries draw pump, oxidation and aeration pond is connected.
Further, the first circulation pump, second circulation pump, third circulating pump, the 4th circulating pump are variable frequency pump, institute
Magnesium hydroxide preparation vessel is stated also with steam pipe, industrial water pipe to be connected；The magnesium hydroxide preparation vessel, magnesium hydroxide storage tank, in
With blender is both provided in slot；The smoke outlet is provided with sulfur dioxide detector, and acid is provided in the catch basin
Alkalinity sensor.
Further, the rotation center pipe, stirring branch pipe on be both provided with multiple solarization air caps, and be internally provided with phase
Intercommunicated inlet channel, wherein, the cavity, second unidirectional for sealing bearing by third into row of channels of the rotation center pipe
Valve is connected with the second Aeration fan.
In addition, in technical solution of the present invention, it is all not do what is illustrated, the conventional hand in this field can be used
Section realizes the technical program.
The present invention has the following advantages：The present invention has double aerators, aeration tube is not only set in catch basin, simultaneously
Oxidation and aeration pond is also provided with, aeration effect is notable, fully oxidized can absorb SO2Absorbing liquid, and can save and account for
Ground area reduces cost of investment and operating cost.The aerator structure novel of the present invention is unique, and aeration effect is good.It is catchmenting
Aeration tube in slot is set around agitating device, and aeration tube includes aeration bottom tube and aeration vertical branch, agitating device work
Bottom deposit sludge, but also catch basin can will not be not only caused when making by the slurries in catch basin to catch basin undermining
Interior slurry fluidity is stronger so that aeration effect is more notable.Likewise, the aeration tube in the pond of oxidation and aeration pond is around stirring
Aerator set, and mixing aeration device can on one side actively be stirred, on one side spray bubble be aerated, rotation and
Aeration be carried out at the same time but but also it is independent mutually, random bubble so that aeration effect is very notable in rotation process.Simultaneously
Aeration tube and mixing aeration device in oxidation and aeration pond are combined with each other, and are complemented each other so that the bubble in oxidation and aeration pond is more
And it is close, it can be to absorbing SO2Absorbing liquid carry out enough oxidation, therefore but also the oxidation and aeration pond of the present invention and be not required to
What is set is excessive, thus also saves floor space, reduces cost of investment and operating cost.Coal-burning boiler provided by the invention
Wet desulfurization system uses magnesia, and for raw material, magnesium hydroxide is desulfurizing agent, desulfurization effect low to the processing cost of sulfur-containing smoke gas
Significantly, and Adlerika can be recycled, epsom salt is prepared, realize the comprehensive profit of Magnesium desulfurization byproduct
With.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the structure diagram in oxidation and aeration pond of the present invention.
In figure：1st, desulfurizing tower；2nd, installing plate；3rd, chimney；4th, booster fan；5th, first baffle door；6th, the second plate washer door；7、
First spraying layer；8th, the second spraying layer；9th, third spraying layer；10th, entrance spray equipment；11st, third circulating pump；12nd, it second follows
Ring pumps；13rd, first circulation pumps；14th, the 4th circulating pump；15th, demister；16th, cleaning pipe；17th, the first stirring motor；18th, first
Seal bearing；19th, agitating shaft；20th, the first Aeration fan；21st, the first check valve；22nd, the first aeration tube；23rd, magnesia warehouse；
24th, spiral is weighed feeder；25th, magnesium hydroxide preparation vessel；26th, magnesium hydroxide feeding engine；27th, magnesium hydroxide storage tank；28th, it neutralizes
Slot；29th, slurries draw pump；30th, oxidation and aeration pond；31st, the second Aeration fan；32nd, filter press；33rd, filtrate receiver；34th, triple effect steams
Send out device；35th, crystallizer；36th, centrifuge；37th, fluid bed, 38, packing machine；39th, inlet tube；40th, outlet tube；41st, the second stirring
Motor；42nd, the second sealing bearing；43rd, rotation center pipe；44th, branch pipe is stirred；45th, the second aeration tube；46th, third sealing bearing；
47th, the second check valve；48th, third check valve；49th, scraper plate.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
Referring to Fig. 1-2, a kind of coal-burning boiler wet desulfurization system, including desulfurizing tower 1, the desulfurizing tower 1 enters with flue gas
Mouthful and exhanst gas outlet, the smoke inlet be connected by ajutage with coal-burning boiler, the exhanst gas outlet by smoke exhaust pipe and
Chimney 3 is connected, and booster fan 4 is provided on the ajutage, first is provided between the booster fan 4 and smoke inlet
Baffle door 5 is also associated with bypass air hose, second baffle door is provided on the bypass air hose between the ajutage and smoke exhaust pipe
6。
The bottom of the desulfurizing tower 1 is additionally provided with installing plate 2, and catch basin, the installing plate are formed at 2 top of installing plate
Installation cavity is formed between 2 and the bottom plate of desulfurizing tower 1；19 and first aeration tube 22 of agitating shaft is provided in the catch basin, it is described
Multiple blades are provided on agitating shaft 19, multiple solarization air caps are provided on first aeration tube 22, are set in the installation cavity
There are the first Aeration fan 20 and the first stirring motor 17；The middle part of the installing plate 2 is provided with the first sealing bearing 18, and described
One stirring motor 17 is sequentially connected by the first sealing bearing 18 with agitating shaft 19, and first Aeration fan 20 is single by first
It is connected to valve 21 with the first aeration tube 22；First aeration tube 22 includes the circle set around agitating shaft 19, multiple blades
The aeration bottom tube of annular, described be aerated in bottom tube are evenly distributed with multiple aeration vertical branch；During work, in the work of multiple blades
Under, the slurries in catch basin are washed away to the trench bottom that catchments.
1 top of desulfurizing tower is disposed with the first spraying layer 7, the second spraying layer 8, third spraying layer 9 from the top down,
First spraying layer 7, the second spraying layer 8, third spraying layer 9 pass through first circulation pump 13, second circulation pump 12, third respectively
Circulating pump 11 is connected with catch basin；The catch basin is connected with magnesium hydroxide storage tank 27, and the catch basin passes through slurry
Liquid draws pump 29 and is connected with oxidation and aeration pond 30, and the oxidation and aeration pond 30 is connected with the second Aeration fan 32.
One upper lateral part in the oxidation and aeration pond 30 is provided with inlet tube 39, and another side lower part is provided with outlet tube 40；Institute
It states and the second aeration tube 45 and mixing aeration device is provided in oxidation and aeration pond 30, second aeration tube 45 and stirring aeration dress
It puts and is both provided with multiple solarization air caps；The mixing aeration device includes rotation center pipe 43, hangs down on the rotation center pipe 43
Multiple rows of stirring branch pipe 44 is directly provided with, the length for often arranging the stirring branch pipe 44 is identical, and end is fixedly installed scraper plate 49.It scrapes
The setting of plate can increase the stirring action to slurries, improve aeration effect.Second aeration tube 45 is included in rotation
Heart pipe 43 stirs the aeration bottom tube of circular ring shape that branch pipe 44 and scraper plate 49 are set, and is evenly distributed in the aeration bottom tube more
A aeration vertical branch.
The upper cover center in the oxidation and aeration pond 30, bottom wall central are correspondingly arranged on the second sealing bearing 42, third respectively
Seal bearing 46, bottom wall lower part, the upper cover top in the oxidation and aeration pond 30 are respectively arranged with the second Aeration fan 31, second stir
Motor 41 is mixed, second Aeration fan 31 seals bearing 46 by the second check valve 47, third check valve 48 and third respectively
Outer shroud, the second aeration tube 45 be connected, the lower end of the rotation center pipe 43 is connected with the inner ring of third sealing bearing 46,
Second stirring motor 41 is sequentially connected by the second sealing bearing 42 with rotation center pipe 43.In order to rotation center
Pipe 43 plays enough fixed functions, and the upper cover in oxidation and aeration pond 30 must have enough mechanical strengths, and must securely set
It is placed in pond body.
Entrance spray equipment 10 is additionally provided at the smoke inlet of the desulfurizing tower 1, the entrance spray equipment 10 passes through
4th circulating pump 14 is connected with catch basin, and 7 top of the first spraying layer is also disposed with demister 15 and cleaning pipe 16；
Further include sequentially connected magnesia warehouse 23, spiral is weighed feeder 24, magnesium hydroxide preparation vessel 25, magnesium hydroxide feeding engine
26, the magnesium hydroxide feeding engine 26 is connected with magnesium hydroxide storage tank 27；The outlet tube 40 also successively with filter press 32, filter
Liquid bath 33, triple effect evaporator 34, crystallizer 35, centrifuge 36, fluid bed 37, packing machine 38 are sequentially connected；Further include neutralization chamber
28, the neutralization chamber 28 draws pump 29 with the magnesium hydroxide storage tank 27, slurries respectively, oxidation and aeration pond 30 is connected.
The first circulation pump 13, second circulation pump 12, third circulating pump 11, the 4th circulating pump 14 are variable frequency pump, institute
Magnesium hydroxide preparation vessel 25 is stated also with steam pipe, industrial water pipe to be connected；The magnesium hydroxide preparation vessel 25, magnesium hydroxide storage tank
27th, it is both provided with blender in neutralization chamber 28；The smoke outlet is provided with sulfur dioxide detector, is set in the catch basin
It is equipped with acidity-basicity sensor.By setting sulfur dioxide detector, can according to the handling result of flue gas to first circulation pump 13,
Second circulation pumps working condition (including start and stop, working frequency) of 12, third circulating pump 11 etc. and is controlled, so as to imitate desulfurization
Fruit disclosure satisfy that process requirements.
Multiple solarization air caps are both provided with, and be internally provided with and mutually interconnect on the rotation center pipe 43, stirring branch pipe 44
Logical inlet channel, wherein, the cavity, second unidirectional for sealing bearing 46 by third into row of channels of the rotation center pipe 43
Valve 47 is connected with the second Aeration fan 31.Meanwhile it is also interconnected to be aerated bottom tube with multiple aeration vertical branch, and be
Number of bubbles (namely air pressure) everywhere is made to meet corresponding requirement, the aperture of solarization air cap everywhere can be of different sizes, real
In the operation of border, carried out opening up selection according to practical experience.
As being well known that, in order to control the flow in each connecting line, in attached drawing 1 although it is not shown, but
It is that multiple shut-off valves, flow valve, booster pump etc. can be set in each pipeline according to actual demand, does not go to live in the household of one's in-laws on getting married further herein
It states.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution recorded in foregoing embodiments or carry out equivalent replacement to which part technical characteristic；
And these modification or replace, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (7)
1. a kind of coal-burning boiler wet desulfurization system, including desulfurizing tower, the desulfurizing tower has smoke inlet and exhanst gas outlet, institute
It states smoke inlet by ajutage with coal-burning boiler to be connected, the exhanst gas outlet is connected by smoke exhaust pipe with chimney, described
Booster fan is provided on ajutage, first baffle door, the ajutage are provided between the booster fan and smoke inlet
Bypass air hose is also associated between smoke exhaust pipe, second baffle door is provided on the bypass air hose；It is characterized in that：
The bottom of the desulfurizing tower is additionally provided with installing plate, and catch basin, the installing plate and desulfurization are formed at the installing plate top
Installation cavity is formed between the bottom plate of tower；Agitating shaft and the first aeration tube are provided in the catch basin, is set on the agitating shaft
Have multiple blades, multiple solarization air caps be provided on first aeration tube, be provided in the installation cavity the first Aeration fan and
First stirring motor；The first sealing bearing is provided in the middle part of the installing plate, first stirring motor passes through the first sealing
Bearing is sequentially connected with agitating shaft, and first Aeration fan is connected by the first check valve with the first aeration tube；Described
One aeration tube includes the aeration bottom tube of circular ring shape set around agitating shaft, multiple blades, is uniformly distributed in the aeration bottom tube
There are multiple aeration vertical branch；During work, under the action of multiple blades, the slurries in catch basin are rushed to the trench bottom that catchments
Brush.
2. coal-burning boiler wet desulfurization system according to claim 1, it is characterised in that：The desulfurizing tower top on to
Under be disposed with the first spraying layer, the second spraying layer, third spraying layer, first spraying layer, the second spraying layer, third spray
Drenching layer is pumped respectively by first circulation, second circulation pump, third circulating pump are connected with catch basin；The catch basin and hydroxide
Magnesium storage tank is connected, and the catch basin draws pump by slurries and is connected with oxidation and aeration pond, the oxidation and aeration pond and
Second Aeration fan is connected.
3. coal-burning boiler wet desulfurization system according to claim 2, it is characterised in that：The side in the oxidation and aeration pond
Top is provided with inlet tube, and another side lower part is provided with outlet tube；The second aeration tube is provided in the oxidation and aeration pond and is stirred
Aerator is mixed, multiple solarization air caps are both provided on second aeration tube and mixing aeration device；The mixing aeration device
Including rotation center pipe, multiple rows of stirring branch pipe is vertically installed on the rotation center pipe, often arranges the length of the stirring branch pipe
It is identical, and end is fixedly installed scraper plate；Second aeration tube includes setting around rotation center pipe, stirring branch pipe and scraper plate
The aeration bottom tube for the circular ring shape put, described be aerated in bottom tube are evenly distributed with multiple aeration vertical branch.
4. coal-burning boiler wet desulfurization system according to claim 2, it is characterised in that：The upper cover in the oxidation and aeration pond
Center, bottom wall central are correspondingly arranged on the second sealing bearing respectively, third seals bearing, under the bottom wall in the oxidation and aeration pond
Portion, upper cover top are respectively arranged with the second Aeration fan, the second stirring motor, and second Aeration fan is single by second respectively
It is connected to outer shroud, the second aeration tube of valve, third check valve and third sealing bearing, the lower end of the rotation center pipe and the
The inner ring of three sealing bearings is connected, and second stirring motor is sequentially connected by the second sealing bearing with rotation center pipe.
5. coal-burning boiler wet desulfurization system according to claim 1, it is characterised in that：The smoke inlet of the desulfurizing tower
Place is additionally provided with entrance spray equipment, and the entrance spray equipment is connected by the 4th circulating pump with catch basin, and described first
Spraying layer top is also disposed with demister and cleaning pipe；Further include sequentially connected magnesia warehouse, spiral is weighed feeding
Machine, magnesium hydroxide preparation vessel, magnesium hydroxide feeding engine, the magnesium hydroxide feeding engine are connected with magnesium hydroxide storage tank；It is described
Outlet tube is also sequentially connected with filter press, filtrate receiver, triple effect evaporator, crystallizer, centrifuge, fluid bed, packing machine successively；Also
Including neutralization chamber, the neutralization chamber draws pump with the magnesium hydroxide storage tank, slurries respectively, oxidation and aeration pond is connected.
6. coal-burning boiler wet desulfurization system according to claim 1, it is characterised in that：The first circulation pump, second
Circulating pump, third circulating pump, the 4th circulating pump are variable frequency pump, the magnesium hydroxide preparation vessel also with steam pipe, industrial water pipe
It is connected；The magnesium hydroxide preparation vessel, magnesium hydroxide storage tank are both provided with blender in neutralization chamber；The smoke outlet
Sulfur dioxide detector is provided with, acidity-basicity sensor is provided in the catch basin.
7. coal-burning boiler wet desulfurization system according to claim 1, it is characterised in that：The rotation center pipe, stirring
Multiple solarization air caps are both provided on branch pipe, and are internally provided with interconnected inlet channel, wherein, the rotation center pipe
Into row of channels by third seal bearing cavity, the second check valve be connected with the second Aeration fan.
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| CN201711224456.6A CN108159854A (en) | 2017-11-28 | 2017-11-28 | A kind of coal-burning boiler wet desulfurization system |
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| CN109012038A (en) * | 2018-08-10 | 2018-12-18 | 杨明超 | A kind of equipment for treating industrial waste gas |
| CN109990306A (en) * | 2018-12-24 | 2019-07-09 | 河南省锅炉压力容器安全检测研究院 | Boiler blow down flash device |
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Application publication date: 20180615 |