CN110180372A - A kind of exhaust gas cleaner of segmented processing - Google Patents
A kind of exhaust gas cleaner of segmented processing Download PDFInfo
- Publication number
- CN110180372A CN110180372A CN201910430062.9A CN201910430062A CN110180372A CN 110180372 A CN110180372 A CN 110180372A CN 201910430062 A CN201910430062 A CN 201910430062A CN 110180372 A CN110180372 A CN 110180372A
- Authority
- CN
- China
- Prior art keywords
- air inlet
- inlet pipe
- spray
- desulfurizing tower
- interlayer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012545 processing Methods 0.000 title claims abstract description 19
- 239000007921 spray Substances 0.000 claims abstract description 114
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 64
- 238000005507 spraying Methods 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 15
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002351 wastewater Substances 0.000 claims abstract description 11
- 230000023556 desulfurization Effects 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 79
- 239000011229 interlayer Substances 0.000 claims description 68
- 239000002002 slurry Substances 0.000 claims description 66
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 61
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 61
- 239000004571 lime Substances 0.000 claims description 61
- 239000011440 grout Substances 0.000 claims description 39
- 238000010992 reflux Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 2
- 235000019504 cigarettes Nutrition 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 230000006872 improvement Effects 0.000 abstract description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 22
- 239000007788 liquid Substances 0.000 description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 13
- 238000010521 absorption reaction Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 9
- 229910052717 sulfur Inorganic materials 0.000 description 9
- 239000011593 sulfur Substances 0.000 description 9
- 230000008901 benefit Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000005864 Sulphur Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000006386 neutralization reaction Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 239000002699 waste material Substances 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
- B01D53/26—Drying gases or vapours
-
- 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
- B01D53/504—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 device
-
- 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
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
Abstract
The invention discloses a kind of exhaust gas cleaners of segmented processing, including desulfurizing tower, demister and waste water water tank, desulfurizing tower includes air inlet pipe, it is the straight pipeline of a pair of laminar, air inlet pipe is co-axially located in desulfurizing tower tower body, and air inlet pipe bottom side of the wall connection one uniformly opens up several spray apertures on air inlet pipe inner tubal wall for importing the booster fan of sulfide gas；Spray equipment, arrival end are arranged at the top of desulfurizing tower tower body, and spray equipment is looped around in the shape of a spiral between air inlet pipe periphery and the tower body inner circumferential of desulfurizing tower, and spray equipment longitudinal spiral interval is arranged so that forming a spraying layer between adjacent two layers spray equipment；Water pump is arranged in spraying layer, and the output end of water pump is connected to air inlet pipe；And escape pipe, it is arranged on desulfurizing tower tower body bottom outside wall, escape pipe arrival end is connected to spraying layer outlet end.Desulfurization degree of the invention is high, and desulfuration efficiency is big, suitable for some large-scale and improvement of the middle-size and small-size power plant to sulfide gas.
Description
Technical field
The present invention relates to desulphurization plant technical field, specially a kind of exhaust gas cleaner of segmented processing.
Background technique
In recent years, domestic many regional requirements factories realize minimum discharge, and wherein the discharge of sulfur dioxide is lower than 35mg/
Nm3.In the case where factory's O&M level is higher, deduster safeguards preferable situation, sulfide gas sulfur content is in 30mg/Nm3-
100mg/Nm3Between, and sulfide gas amount is considerable, the cleaning equipment for removing sulfide gas needs within moment continuously
Constantly high-efficient purification sulfide gas makes purified sulfide gas reach the emission request of place discharge mark, is lower than
National emission standard.
The main function of desulfurizing tower is the sulfur dioxide removed in sulfide gas, and spray column is the most widely used
One of desulfurizing tower type, spray column have structure simple, the reliable advantage of technical maturity, are widely used in large-scale and middle-size and small-size electricity
Improvement of the factory to low-sulfur sulfide gas, but the single desulfurization for relying solely on spray column itself are difficult to realize the super of sulfur dioxide
Low emission, desulfuration efficiency is also unsatisfactory, and secondary pollution can be usually brought when being recycled to waste.
Summary of the invention
It is an object of the invention to solve at least the above problems, and provide the advantages of at least will be described later.
It is a still further object of the present invention to provide a kind of exhaust gas cleaners of segmented processing, have structure simple, behaviour
The advantages that work is stablized, and low energy consumption, long service life.
In order to achieve the object of the present invention and further advantage, a kind of exhaust gas cleaner of segmented processing, packet are provided
It includes:
Desulfurizing tower comprising:
Air inlet pipe is the straight pipeline of a pair of laminar, and the air inlet pipe is co-axially located in the desulfurizing tower tower body, the air inlet
For importing the booster fan of sulfide gas, the air inlet pipe lower end is connected to a grout outlet, described for pipe bottom side of the wall connection one
Several spray apertures are uniformly opened up on air inlet pipe inner tubal wall；
Spray equipment, arrival end are arranged at the top of the desulfurizing tower tower body, and the spray equipment is looped around described in the shape of a spiral
Between air inlet pipe periphery and the tower body inner circumferential of the desulfurizing tower, and spray equipment longitudinal spiral interval is arranged so that adjacent two
A spraying layer is formed between the layer spray equipment；
Water pump is arranged in the spraying layer, and the output end of the water pump is connected to the air inlet pipe, and the water pump will gather
In the interlayer that the lime slurry in the spraying layer pumps into the air inlet pipe；And
Escape pipe is arranged on the desulfurizing tower tower body bottom outside wall, and the escape pipe arrival end goes out with the spraying layer
The connection of mouth end；
Demister, arrival end are connected to the escape pipe outlet end, and the demister outlet end is connected to a chimney；With
And
Waste water water tank, arrival end are connected to the grout outlet outlet end.
Preferably, the air inlet pipe includes the grout outlet of interior conduit, Outer Tube and a structure funnel-shaped, said inner tube road
Coaxial spaced is arranged in the Outer Tube, and said inner tube road upper end opening periphery and the Outer Tube upper end opening inner circumferential it
Between fitting one ring baffle of setting, be sealed at the top of said inner tube road and the Outer Tube and consolidated by ring baffle described in sandwiched
It is fixed；The upper end of the grout outlet is connected with the lower end in said inner tube road, and the outer diameter of the grout outlet lower ending opening is less than described de-
The lower end of the internal diameter of sulphur tower tower body outlet at bottom, the grout outlet is drawn outward from the outlet of desulfurizing tower tower body bottom, should
Exit extends downwardly and coaxial spaced is embedded in the grout outlet.
Preferably, an air inlet is opened up on the side wall of the grout outlet, the booster fan output end is from outside through institute
Be affixed on the air inlet after stating the tower body of desulfurizing tower, the booster fan sulfide gas is pressurizeed after from institute
Air inlet is stated to imported into said inner tube road.
Preferably, the spray equipment includes being looped around the spray interlayer of the air inlet pipe periphery in the shape of a spiral and being mounted on
Several nozzles on the spray interlayer lower surface, the nozzle is connected to the spray interlayer, and the spray interlayer is longitudinal
Spiral spacer is arranged so that form the spraying layer between spray interlayer described in adjacent two layers, the spray interlayer arrival end with set
The inlet pipe set on the desulfurizing tower tower body outer wall is connected, and lime slurry is imported into the spray interlayer by the inlet pipe
It is interior.
Preferably, axially projecting on the air inlet pipe outer tube wall to be provided with multiple first baffles, and the first baffle
It is fixed on each layer spray interlayer upper surface, the height of the first baffle is less than the height of the spraying layer.
Preferably, the water pump is fixed on the spray interlayer bottom of the first baffle front end, the outer tube
Axially spaced on road tube wall to open up several through-holes, the interlayer between the through-hole and said inner tube road and Outer Tube is connected to, and
Open up position and the position of the water pump of the through-hole correspond, and the output end of the water pump is correspondingly connected with the through-hole
On, the water pump is pumped lime slurry into the interlayer of the air inlet pipe by the through-hole.
Preferably, uniformly open up several spray apertures on said inner tube road tube wall, said inner tube road outer tube wall with it is described
The multiple second baffles of transverse fit sandwiched between Outer Tube inner tubal wall, the second baffle are axially located at the two neighboring through-hole
Between.
Preferably, several mounting holes are opened up with the direction perpendicular to its lower surface on the spray interlayer lower surface, it is described
Mounting hole is connected to the spray interlayer, and the mounting hole covers the width direction of the spray interlayer；The nozzle is mounted on
In the mounting hole, and the nozzle is sprayed downwards along the direction vertical with the spray interlayer lower surface.
Preferably, a water level sensor, the terminal connection of the water level sensor are installed on the first baffle front end face
One controller, the controller are connect with the water pump.
Preferably, the bottom of the desulfurizing tower is arranged to funnel-shaped structure, the outlet at bottom of the desulfurizing tower and it is described go out
Starch pipe connection, the outlet at bottom of the desulfurizing tower is located at the air inlet lower end, and the outlet at bottom of the desulfurizing tower with it is described
Lime slurry filled with reflux in the grout outlet between the position and the air inlet of grout outlet connection, the desulfurizing tower
Lime slurry in bottom and said inner tube road is introduced into the waste water water tank after collecting in the grout outlet.
Beneficial effects of the present invention are as follows:
1, the configuration of the present invention is simple is compact, and by special desulfurizing tower, demister, the composition such as waste water water tank has removal efficiency high, takes off
The advantages that sulphur efficiency is big, and output is stablized, and low energy consumption, long service life is suitable for some large-scale and middle-size and small-size power plant to sulfide
The improvement of gas.
2, special desulfurizing tower of the invention uses structure of the spray equipment spiral surrounding on desulfurizing tower internal perisporium, makes same
In the case where equal desulfurizing towers volume, by the longer of spray equipment design, so that the contact area between increasing gas-liquid, increases gas
Time of contact between liquid greatly improves the removal efficiency of sulfur dioxide.
3, the lime slurry being collected in jet flow layer is drawn into intratracheally by the present invention by adding water pump, makes lime slurry
Spray desulfurization for the first time is carried out to the sulfide gas for entering desulfurizing tower, increases the interior circulation of desulfurizing tower with this, to improve
The removal efficiency and desulfuration efficiency of sulfur dioxide.
4, by the way of the nozzle of spray equipment of the present invention is sprayed using the edge direction vertical with spray interlayer lower surface,
Make have bigger contact area between gas-liquid, to improve the removal efficiency of sulfur dioxide.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is the side view of inventive desulfurization tower；
Fig. 2 is the structural schematic diagram of inventive desulfurization tower；
Fig. 3 is the structural schematic diagram of air inlet pipe of the present invention；
Fig. 4 is the view in transverse section of air inlet pipe of the present invention；
Fig. 5 is the enlarged drawing of A of the present invention；
Fig. 6 is the enlarged drawing of B of the present invention.
In figure: 1, booster fan；2, air inlet pipe；3, inlet pipe；4, spray equipment；5, spraying layer；6, water pump；7, outlet
Pipe；8, grout outlet；9, first baffle；10, water level sensor；21, interior conduit；22, Outer Tube；23, air inlet；24, grout outlet；
25, through-hole；26, spray apertures；27, ring baffle；28, second baffle；41, interlayer is sprayed；42, nozzle；43, mounting hole.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other elements or combinations thereof.
Referring to Fig. 2, the present invention provides a kind of technical solution: a kind of exhaust gas cleaner of segmented processing, including it is de-
Sulphur tower, demister and waste water water tank.
Specifically, desulfurizing tower includes: air inlet pipe 2, spray equipment 4, water pump 6 and escape pipe 7 etc., wherein air inlet pipe 2 is coaxial
It is arranged in desulfurizing tower tower body, spray equipment 4 is looped around the periphery of air inlet pipe 2, and water pump 6 is arranged in adjacent two layers spray equipment 4
Between and be connected to the interlayer of air inlet pipe 2, escape pipe 7 is arranged on desulfurizing tower tower body bottom outside wall.
Air inlet pipe 2 is the straight pipeline of two-layer equation, and air inlet pipe 2 includes interior conduit 21, Outer Tube 22 and structure funnel-shaped
Grout outlet 24, wherein the outer diameter of interior conduit 21 is less than the internal diameter of Outer Tube 22, and 21 coaxial spaced of interior conduit is embedded in Outer Tube 22
It is interior, and ring baffle 27, ring baffle are folded between 22 upper end opening inner circumferential of 21 upper end opening periphery of interior conduit and Outer Tube
27 are folded between interior conduit 21 and Outer Tube 22 by fitting and are sealed fixation to the two.
The lower end of air inlet pipe 2 is communicated with grout outlet 8, in the present embodiment, the upper end of grout outlet 24 and the lower end of interior conduit 21
It is connected, the outer diameter of 24 lower ending opening of grout outlet is less than the internal diameter of desulfurizing tower tower body outlet at bottom, and the lower end of grout outlet 24 is from desulfurization
The outlet of tower tower body bottom is drawn outward, which extends downwardly and coaxial spaced is embedded in grout outlet 8；
The bottom side of the wall of air inlet pipe 2 is communicated with the booster fan 1 for importing sulfide gas, specifically, the side of grout outlet 24
Offer air inlet 23 on wall, the output end of booster fan 1 is from outside through being affixed to air inlet after the tower body of desulfurizing tower
On 23, booster fan 1 is imported into interior conduit 21 after sulfide gas pressurizes from air inlet 23, and then sulfide gas is in
Pipeline 21 flows up, and overflows into the inside to desulfurizing tower tower body from the upper end opening of air inlet pipe 2.
Spray equipment 4 is looped around in the shape of a spiral between 2 periphery of air inlet pipe and the tower body inner circumferential of desulfurizing tower, spray equipment 4
Arrival end is arranged at the top of desulfurizing tower tower body, specifically, spray equipment 4 includes the spray for being looped around 2 periphery of air inlet pipe in the shape of a spiral
Leaching interlayer 41 and several nozzles 42 being mounted on spray 41 lower surface of interlayer, and nozzle 42 is connected to spray interlayer 41, is sprayed
41 longitudinal spiral interval of interlayer is arranged so that forming spraying layer 5, the entrance of spray interlayer 41 between adjacent two layers spray interlayer 41
It holds and is connected with the inlet pipe 3 being arranged on desulfurizing tower tower body outer wall, the lime slurry after pressurization is imported into spray folder by inlet pipe 3
In layer 41,5 downward spiral of spraying layer setting, the top of spraying layer 5 is connected to the upper end opening of air inlet pipe 2, from 2 bottom of air inlet pipe into
The sulfide gas entered flows out at the top of spraying layer 5 after flowing up through air inlet pipe 2 from upper end, and sulfide gas is in air inlet pipe 2
After a spray-absorption of lime slurry, using 5 downward spiral of spraying layer flow out, the outlet at bottom end of spraying layer 5 with
The arrival end of escape pipe 7 is connected to, and sulfide gas is after the secondary spraying of the lime slurry in spraying layer 5 absorbs, from outlet
Pipe 7 discharges, and sulfide gas is absorbed by secondary spraying as a result, and spray response path is long, increases sulfide gas and exists
The reaction residence time in tower, to effectively increase the absorptivity of sulfide gas.
When slurries are sent in the unlatching of inlet pipe 3, lime slurry is flowed into spray interlayer 41 from the pressurization of inlet pipe 3, then by spraying
Mouth 42 sprays lime slurry into spraying layer 5, the lime slurry sprayed in spraying layer 5 cover the spiral of entire spraying layer 5 to
Lower path improves gas in spraying layer 5 with the contact rate of lime slurry, the lime slurry sprayed out and flows through spraying layer 5
Sulfide gas carries out gas-liquid two-phase and comes into full contact with absorption neutralization reaction, and special desulfurizing tower of the invention uses 4 spiral shell of spray equipment
The structure being looped around on desulfurizing tower internal perisporium is revolved, is made in the case where same desulfurizing tower volume, by the design of 4 path of spray equipment
It is longer, so that the contact area between increasing gas-liquid, increases the time of contact between gas-liquid, greatly improves sulfur dioxide
Removal efficiency.
Spray and several mounting holes 43 opened up with the direction perpendicular to its lower surface on the lower surface of interlayer 41, mounting hole 43 with
It sprays interlayer 41 to be connected to, the width direction of the covering spray interlayer 41 of mounting hole 43；Nozzle 42 is installed in mounting hole 43, so that
Nozzle 42 is connected to spray interlayer 41, and nozzle 42 is sprayed along the direction vertical with spray 41 lower surface of interlayer, that is to say, that
Gas in the movement routine of spraying layer 5 with the spray direction of lime slurry be it is vertical, such design is so that in same spray dress
In the case where setting 4 length, the sulfide gas that nozzle 42 sprays out spray liquid and flows through below obtains bigger contact area,
To improve the removal efficiency of sulfur dioxide.Meanwhile the width direction of the covering spray interlayer 41 of mounting hole 43, that is, nozzle 42
The width direction of covering spray interlayer 41, realize the lime slurry sprayed in spraying layer 5 cover the spiral of entire spraying layer 5 to
Lower path improves gas in spraying layer 5 with the contact rate of lime slurry, cooperates longer 5 spiral of spraying layer under equal volume
Downward path finally effectively increases the contacting efficiency and contact distance of gas and lime slurry, improves to pernicious gas
Reactive absorption efficiency.
Axially projecting on the outer tube wall of air inlet pipe 2 to be provided with multiple first baffles 9, each first baffle 9 is located at same
On straight line, specifically, 9 two sides of first baffle are sealed between the outer tube wall for being folded in air inlet pipe 2 and desulfurizing tower tower body internal perisporium,
And first baffle 9 is fixed on the upper surface of each layer of spray interlayer 41, to stop to accumulate on each layer of spray interlayer 41
Lime slurry one layer of spray interlayer 41 flowing directly down.The height of first baffle 9 is less than the height of spraying layer 5, the present embodiment
In, it often rotates a circle along spray interlayer 41 and a first baffle 9 is set, between the upper end and spray 41 lower surface of interlayer of first baffle 9
Gap can supplied gas flow through, do not hinder the proper flow of gas, meanwhile, first baffle 9 is to the stone to flow downward in spraying layer 5
Grey slurries are intercepted, so that being accumulated in the first gear of this layer of bottom from the lime slurry that each layer of spray of spraying layer 5 comes out
9 front position of plate.
Several water pumps 6 are provided in spraying layer 5, the output end of water pump 6 is connected to air inlet pipe 2, and water pump 6 will accumulate in spraying layer
Lime slurry in 5 is pumped into the interlayer of air inlet pipe 2, specifically, water pump 6 is fixed on the spray of 9 front end of first baffle
The position that lime slurry gathers in 41 bottom of interlayer, that is, every layer of spraying layer 5, it is axially spaced on 22 tube wall of Outer Tube to open up
Several through-holes 25, through-hole 25 is located at the path front position of first baffle 9, between through-hole 25 and interior conduit 21 and Outer Tube 22
Interlayer connection, and open up position and the position of water pump 6 of through-hole 25 correspond, the output end of water pump 6 is correspondingly connected with through-hole
On 25, water pump 6 is pumped the lime slurry for accumulating in each layer of 5 bottom of spraying layer into the interlayer of air inlet pipe 2 by through-hole 25.
Several spray apertures 26 are uniformly opened up on the tube wall of interior conduit 21, spray apertures 26 are connected to the interlayer of air inlet pipe 2, water pump 6
Pumping can spray into the lime slurry in 2 interlayer of air inlet pipe from spray apertures 26, into inside interior conduit 21, so that the stone
Grey slurries carry out the neutralization reaction of first stage with the sulfide gas for importeding into interior conduit 21 after the pressurization of booster fan 1,
It is such that the interior circulation for increasing desulfurizing tower is set, greatly improve reaction efficiency and removal efficiency.
Further, the multiple second gear of transverse fit sandwiched between 22 inner tubal wall of 21 outer tube wall of interior conduit and Outer Tube
Plate 28, that is, multiple second baffles 28 are laterally folded in the interlayer of air inlet pipe 2, and second baffle 28 is axial positioned at adjacent
Between two through-holes 25, by the interlayer of air inlet pipe 2, equally-spaced is multiple separate chambers in the axial direction, and baffle 28 is by each water
Pump 6 is pumped is isolated into the lime slurry in 2 interlayer of air inlet pipe, is increased the indoor pressure of each separate chamber, is made lime white
Liquid can smoothly be sprayed from spray apertures 26, be sprayed in interior conduit 21 and contacted with air inlet reaction, realize an absorbing reaction, gas
For body in air inlet pipe 2 in upward intake process, whole process carries out initial absorption by a spray-absorption reaction, then from up to
Under in spraying layer 5 precession have by primary and secondary substep, gradual absorption process by secondary spraying absorbing reaction
Effect increases the absorption efficiency to gas, while under the desulfurizing tower of equal volume, the absorbing reaction path of gas is dramatically increased,
Further improve the absorptivity to gas.
Second baffle 28, which also acts, carries out the different lime slurries using concentration the secondary beneficial effect rationally utilized
Fruit: if the initial sulfur content of sulfide gas is 80mg/Nm3, inlet pipe 3, which is imported into, sprays the lime slurry in interlayer 41
Degree of purity is 100%, then the first rank occurs with the lime slurry sprayed out in spray apertures 26 when sulfide gas flows through interior conduit 21
Sulfur content after the neutralization reaction of section is 50mg/Nm3, sulfide gas enters after the upper end opening of air inlet pipe 2 spilling to be sprayed
Layer 5 starts the desulphurization reaction for carrying out second stage to sulfide gas by spray equipment 4, after first week spraying layer 5
The sulfur content of sulfide gas is 45mg/Nm3, and the degree of purity for accumulating in the lime slurry before this layer of first baffle 9 is 50%,
The sulfur content of sulfide gas after second week spraying layer 5 is 40mg/Nm3, and accumulate in the stone before this layer of first baffle 9
The degree of purity of grey slurries is 60%, and so on, then know that multiple first water pump 6 pump lime slurry into air inlet pipe 2
When in each interlayer, the degree of purity of lime slurry is to successively decrease step by step from lower to upper, that is to say, that is sprayed from 2 interlayer of air inlet pipe
It is also to successively decrease step by step from lower to upper to the lime slurry concentration in interior conduit 21, in the first phase, when containing for sulfide gas
When sulfur content is high, the degree of purity of spray to lime slurry thereon is also relatively high, so that the utilization rate of lime slurry is higher, in turn
Improve the removal efficiency and removal efficiency of sulfur dioxide.
It follows that the innovative point as apparatus of the present invention, the spray concentration into interior conduit 21 is that have step distribution
, it is higher, in interior conduit 21 from bottom to top a spray-absorption process that gas, which has just enter into sulfur content in interior conduit 21,
In, sulfur content can gradually decline, for this purpose, in present invention design, by the design of first baffle 9, water pump 6 and second baffle 28,
So that the lime slurry concentration once sprayed is from bottom to top gradually successively decreased, that is, high density sulfides gas high concentration
Lime slurry carry out reactive absorption, as gas up flows, gas concentration reduces, and in the process, the gas of low concentration is used
The lime slurry of low concentration carrys out reactive absorption, realizes subregion, point concentration to absorb the primary spray reaction process of processing, passes through
After spray-absorption, the sulfur content in gas is significantly reduced, and from top to bottom enters progress secondary spraying suction in spraying layer 5
It receives, sprays original lime slurry in spraying layer 5, the gas after once absorbing successively passes through in the spiral space of spraying layer 5
Cross every layer of spray, gas concentration gradually reduces until reach discharge standard, it is discharged outward from tower body bottom, and accumulate in every layer of spray
What the lime slurry concentration of 5 bottom of drenching layer gradually increased, and sprayed carry out one into the interior conduit 21 of corresponding position respectively
Secondary spray-absorption, the lime slurry after being not only effectively utilized secondary spraying improve the utilization rate to lime slurry, meanwhile, it is right
The optimization on spray strategy is carried out containing sulphur concentration in lime slurry concentration and gas, improves the absorptivity to sulfide gas,
It reduces costs.
In above-mentioned technical proposal, water level sensor 10, the terminal of water level sensor 10 are installed on 9 front end face of first baffle
It is connected with controller, controller is connect with water pump 6.Water level sensor 10 measures the amount of the lime slurry under baffle 9 intercepts, then leads to
The output frequency that controller adjusts water pump 6 is crossed, the phenomenon that overflowing above baffle 9 since lime slurry is excessive hair can be prevented
It is raw.In the present invention, the liquid level of lime slurry is gathered by every layer of 5 bottom of spraying layer of monitoring, at the same control inlet pipe 3 into
Slurry flow and water pump 6 pump out flow, the balance both realized, that is, inlet pipe 3 pumps out flow into slurry flow and water pump 6 and is
It is consistent, to maintain the liquid level of 5 bottom of every layer of spraying layer accumulation lime slurry to stablize, guarantee every layer of 5 bottom of spraying layer product
Poly- lime slurry will not keep the flowing of gas between each layer spraying layer 5 smooth to next layer of overflow.
The bottom of desulfurizing tower is arranged to funnel-shaped structure, and the outlet at bottom of desulfurizing tower is connected to grout outlet 8, the bottom of desulfurizing tower
Portion outlet is located at 23 lower end of air inlet, and between the outlet at bottom of the desulfurizing tower position being connected to grout outlet 8 and air inlet 23
Filled with the lime slurry to flow back from interior conduit 21 in grout outlet 8, plays the role of liquid level envelope, prevent from 21 bottom of interior conduit
Air inlet is directly flowed out from grout outlet 8, quilt after the reflux lime slurry in desulfurization tower bottom and interior conduit 21 collects in grout outlet 8
It is introduced into waste water water tank.
The arrival end of demister is connected to 7 outlet end of escape pipe, and demister outlet end is communicated with chimney, waste water water
The arrival end of case is connected to 8 outlet end of grout outlet, i.e., by it is sufficiently cleaned up and reach discharge mark wet sulfide gas from
Escape pipe 7, which is introduced into demister, to be dried, and is finally discharged from chimney, the lime slurry quilt discarded in grout outlet 8
It introduces waste water water tank to be handled, prevents from bringing secondary pollution.
In conclusion sulfide gas is directed in air inlet pipe 2 after being pressurizeed by booster fan 1, water pump 6 is by spraying layer
Lime slurry in 5 is pumped into the interlayer of air inlet pipe 2, which sprays from spray apertures 26 and send out with sulfide gas
The neutralization reaction of raw first stage, then sulfide gas enters spraying layer 5 after the upper end opening of air inlet pipe 2 spilling, that is, opens
Begin the desulphurization reaction for carrying out second stage to sulfide gas by spray equipment 4, finally passes through sufficiently cleaned up and reaches discharge mark
The wet sulfide gas of note is introduced into demister by escape pipe 7 to be dried, and is finally discharged from chimney, and is discarded
Lime slurry by waste water water tank recycling avoid secondary pollution.Special desulfurizing tower of the invention uses 4 helical ring of spray equipment
The structure being wound on desulfurizing tower internal perisporium makes in the case where same desulfurizing tower volume, spray equipment 4 is designed it is longer, from
And the contact area between gas-liquid is increased, the time of contact between gas-liquid is increased, the removal efficiency of sulfur dioxide is greatly improved；
The lime slurry being collected in jet flow layer 5 is pumped into air inlet pipe 2 by the present invention by adding water pump 6, makes lime slurry to entrance
The sulfide gas of desulfurizing tower carries out spray desulfurization for the first time, increases the interior circulation of desulfurizing tower with this, to improve dioxy
Change the removal efficiency and desulfuration efficiency of sulphur；The nozzle 42 of spray equipment 4 of the present invention is using along vertical with spray 41 lower surface of interlayer
The mode that direction is sprayed makes have bigger contact area between gas-liquid, to improve the removal efficiency of sulfur dioxide.In short,
The desulfurization degree of the exhaust gas cleaner of this segmented processing is high, and desulfuration efficiency is big, and output is stablized, and low energy consumption, long service life, fits
For some large-scale and improvement of the middle-size and small-size power plant to sulfide gas.
Although being disclosed for illustrative purpose the preferred embodiment of the present invention, those skilled in the art
Member will recognize that: without departing from the scope and spirit of the present invention as disclosed in appended claims, be able to carry out
Various modifications, addition and replacement.
Claims (10)
1. a kind of exhaust gas cleaner of segmented processing characterized by comprising
Desulfurizing tower comprising:
Air inlet pipe (2) is the straight pipeline of a pair of laminar, and the air inlet pipe (2) is co-axially located in the desulfurizing tower tower body, institute
It states air inlet pipe (2) bottom side of the wall connection one and connects for importing the booster fan (1) of sulfide gas, air inlet pipe (2) lower end
Lead to a grout outlet (8), uniformly opens up several spray apertures (26) on air inlet pipe (2) inner tubal wall；
Spray equipment (4), arrival end are arranged at the top of the desulfurizing tower tower body, and the spray equipment (4) surround in the shape of a spiral
Between the air inlet pipe (2) periphery and the tower body inner circumferential of the desulfurizing tower, and the spray equipment (4) longitudinal spiral interval is set
It sets so that forming a spraying layer (5) between spray equipment described in adjacent two layers (4)；
Water pump (6) is arranged in the spraying layer (5), and the output end of the water pump (6) is connected to the air inlet pipe (2), and institute
Water pump (6) is stated to pump the lime slurry accumulated in the spraying layer (5) into the interlayer of the air inlet pipe (2)；And
Escape pipe (7) is arranged on the desulfurizing tower tower body bottom outside wall, escape pipe (7) arrival end and the spray
The connection of drenching layer (5) outlet end；
Demister, arrival end are connected to the escape pipe (7) outlet end, and the demister outlet end is connected to a cigarette
Chimney；And
Waste water water tank, arrival end are connected to the grout outlet (8) outlet end.
2. the exhaust gas cleaner of segmented as described in claim 1 processing, which is characterized in that the air inlet pipe (2) includes
The grout outlet (24) of interior conduit (21), Outer Tube (22) and a structure funnel-shaped, the setting of said inner tube road (21) coaxial spaced
In the Outer Tube (22), and said inner tube road (21) upper end opening periphery and the Outer Tube (22) upper end opening inner circumferential it
Between fitting setting one ring baffle (27), kept off by annular described in sandwiched at the top of said inner tube road (21) and the Outer Tube (22)
Plate (27) is sealed fixation；The upper end of the grout outlet (24) is connected with the lower end of said inner tube road (21), the grout outlet
(24) outer diameter of lower ending opening is less than the internal diameter of the desulfurizing tower tower body outlet at bottom, and the lower end of the grout outlet (24) is from described
The outlet of desulfurizing tower tower body bottom is drawn outward, which extends downwardly and coaxial spaced is embedded in the grout outlet (8).
3. the exhaust gas cleaner of segmented processing as claimed in claim 2, which is characterized in that the side of the grout outlet (24)
It is opened up on wall an air inlet (23), booster fan (1) output end is solid from outside through connecting after the tower body of the desulfurizing tower
Surely it arrives on the air inlet (23), the booster fan (1) is led after the sulfide gas pressurizes from the air inlet (23)
Enter in said inner tube road (21).
4. the exhaust gas cleaner of segmented processing as claimed in claim 2, which is characterized in that spray equipment (4) packet
It includes the spray interlayer (41) for being looped around the air inlet pipe (2) periphery in the shape of a spiral and is mounted on spray interlayer (41) lower surface
On several nozzles (42), the nozzle (42) is connected to the spray interlayer (41), and the longitudinal spiral shell of the spray interlayer (41)
The setting of rotation interval between spray interlayer (41) described in adjacent two layers so that form the spraying layer (5), the spray interlayer (41)
Arrival end is connected with the inlet pipe (3) being arranged on the desulfurizing tower tower body outer wall, and the inlet pipe (3) leads lime slurry
Enter into the spray interlayer (41).
5. the exhaust gas cleaner of segmented processing as claimed in claim 4, which is characterized in that air inlet pipe (2) outer tube
It is axially projecting on wall to be provided with multiple first baffles (9), and the first baffle (9) is fixed on each layer spray interlayer
(41) on upper surface, the height of the first baffle (9) is less than the height of the spraying layer (5).
6. the exhaust gas cleaner of segmented processing as claimed in claim 5, which is characterized in that water pump (6) installation is solid
It is scheduled on spray interlayer (41) bottom of the first baffle (9) front end, it is axially spaced on Outer Tube (22) tube wall
It opens up several through-holes (25), the through-hole (25) is connected to the interlayer between said inner tube road (21) and Outer Tube (22), and institute
Open up position and the position of the water pump (6) for stating through-hole (25) correspond, and the output end of the water pump (6) is correspondingly connected with
On the through-hole (25), lime slurry is pumped the interlayer into the air inlet pipe (2) by the through-hole (25) by the water pump (6)
In.
7. the exhaust gas cleaner of segmented processing as claimed in claim 6, which is characterized in that said inner tube road (21) tube wall
On uniformly open up several spray apertures (26), it is horizontal between said inner tube road (21) outer tube wall and the Outer Tube (22) inner tubal wall
To the fitting multiple second baffles of sandwiched (28), the second baffle (28) is axial between the two neighboring through-hole (25).
8. the exhaust gas cleaner of segmented processing as claimed in claim 4, which is characterized in that under the spray interlayer (41)
It is opened up several mounting holes (43) on surface with the direction perpendicular to its lower surface, the mounting hole (43) and the spray interlayer
(41) it is connected to, the width direction of mounting hole (43) covering spray interlayer (41)；The nozzle (42) is mounted on described
In mounting hole (43), and the nozzle (42) is sprayed downwards along the direction vertical with spray interlayer (41) lower surface.
9. the exhaust gas cleaner of segmented processing as claimed in claim 6, which is characterized in that before the first baffle (9)
Installed on end face a water level sensor (10), the terminal of the water level sensor (10) connects a controller, the controller with
Water pump (6) connection.
10. the exhaust gas cleaner of segmented processing as claimed in claim 3, which is characterized in that the bottom of the desulfurizing tower
It is arranged to funnel-shaped structure, the outlet at bottom of the desulfurizing tower is connected to the grout outlet (8), the outlet at bottom of the desulfurizing tower
Positioned at the air inlet (23) lower end, and the position that is connected to the grout outlet (8) of the outlet at bottom of the desulfurizing tower with it is described
Lime slurry filled with reflux in the grout outlet (8) between air inlet (23), the desulfurization tower bottom and said inner tube
Lime slurry in road (21) is introduced into the waste water water tank after collecting in the grout outlet (8).
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| CN201910430062.9A CN110180372B (en) | 2019-05-22 | 2019-05-22 | Tail gas purification device of sectional type processing |
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| CN201910430062.9A CN110180372B (en) | 2019-05-22 | 2019-05-22 | Tail gas purification device of sectional type processing |
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| CN112933901A (en) * | 2019-12-11 | 2021-06-11 | 青岛双瑞海洋环境工程股份有限公司 | Integrated device for waste gas desulfurization and inert gas supply |
| CN112973359A (en) * | 2021-03-18 | 2021-06-18 | 中国石油大学(北京) | Sectional liquid discharge type combined coalescent filter element |
| CN117358054A (en) * | 2023-11-27 | 2024-01-09 | 北京实力伟业环保科技有限公司 | Waste gas biological treatment device based on high acid-resistant desulfurization strain |
| CN117797632A (en) * | 2024-03-01 | 2024-04-02 | 京能锡林郭勒能源有限公司 | Dual-cycle integrated equipment for desulfurizing and extracting water from flue gas |
| CN117797632B (en) * | 2024-03-01 | 2024-05-10 | 京能锡林郭勒能源有限公司 | Dual-cycle integrated equipment for desulfurizing and extracting water from flue gas |
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| CN117797632B (en) * | 2024-03-01 | 2024-05-10 | 京能锡林郭勒能源有限公司 | Dual-cycle integrated equipment for desulfurizing and extracting water from flue gas |
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