CN108686482A - Outer circulation desulphurization system and apply its outer circulation sulfur method - Google Patents
Outer circulation desulphurization system and apply its outer circulation sulfur method Download PDFInfo
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- CN108686482A CN108686482A CN201810764889.9A CN201810764889A CN108686482A CN 108686482 A CN108686482 A CN 108686482A CN 201810764889 A CN201810764889 A CN 201810764889A CN 108686482 A CN108686482 A CN 108686482A
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- circular response
- desulfurizing tower
- response pond
- group
- pipeline
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- 230000004087 circulation Effects 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 19
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 9
- 239000011593 sulfur Substances 0.000 title claims abstract description 9
- 230000004044 response Effects 0.000 claims abstract description 96
- 239000002002 slurry Substances 0.000 claims abstract description 74
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 18
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 21
- 239000003546 flue gas Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 18
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 17
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 17
- 239000004571 lime Substances 0.000 claims description 17
- 229910052602 gypsum Inorganic materials 0.000 claims description 16
- 239000010440 gypsum Substances 0.000 claims description 16
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000012065 filter cake Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 abstract description 32
- 238000006243 chemical reaction Methods 0.000 abstract description 27
- 230000003647 oxidation Effects 0.000 abstract description 15
- 239000002994 raw material Substances 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 6
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- 230000001590 oxidative effect Effects 0.000 abstract description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 8
- 239000000920 calcium hydroxide Substances 0.000 description 8
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 8
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 7
- 235000010261 calcium sulphite Nutrition 0.000 description 7
- 238000006477 desulfuration reaction Methods 0.000 description 7
- 230000023556 desulfurization Effects 0.000 description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 5
- 239000011575 calcium Substances 0.000 description 5
- 229910052791 calcium Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010011906 Death Diseases 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 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
-
- 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
- B01D53/96—Regeneration, reactivation or recycling of reactants
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Treating Waste Gases (AREA)
Abstract
One aspect of the present invention, provide outer circulation desulphurization system, including desulfurizing tower, filtered water tank, air-introduced machine, prepare pond, wind turbine and circular response pond group, desulfurizing tower is connect with filtered water tank pipeline, desulfurizing tower is connect with air-introduced machine pipeline, is connected between the group of circular response pond, and wind turbine is connect with circular response pond group pipeline, preparation pond, desulfurizing tower are connect with one end pipeline of circular response pond group respectively, and desulfurizing tower is connect with the other end pipeline of circular response pond group;Another aspect of the present invention provides outer circulation sulfur method.The present invention carries out oxidation processes using independent oxidative system to loop slurry.The present invention reacts raw material by multiple stage circulation reaction tank, pressure oxidation is carried out to slurries in the group of circular response pond, integrated oxidation rate uniform, the saturation degree so as to avoid local calcium sulfate is excessive, avoids and calcium sulfate is caused to be crystallized in the entire desulphurization system such as tube wall.Circular response pond group synchronous control feed liquor and pulp, avoid fouling, are suitable for wide popularization and application.
Description
Technical field
The invention belongs to discarded purification emissions field, more particularly to a kind of outer circulation desulphurization system and using its outer circulation
Sulfur method.
Background technology
Currently, in the flue gas desulfurization technique of China's coal-burning boiler, lime-gypsum method sulfur removal technology is high with its desulfuration efficiency,
The low advantage of operating cost occupies very big proportion.
But by the follow-up investigation to lime-gypsum method desulfurizing item in recent years, find to pass through longtime running,
Fouling in generally existing absorption tower in lime-gypsum method sulfur removal technology, and be to keep the gas cleaning under not end-of-life state up to standard, then
Producer often takes the makeshift continue to increase dosage, increase chemical concentration etc.So, pipeline is caused faster to be tied
Crystalline substance blocks, and two layers of eddy flow layer blocking is also more serious therewith, and problem not only without solving continuous vicious circle instead, causes, consumes
Electricity constantly increases sharply, service life of equipment shortens, even causes equipment damage.
Invention content
According to an aspect of the invention, there is provided outer circulation desulphurization system, including desulfurizing tower, filtered water tank, air-introduced machine, match
Pond processed, wind turbine and circular response pond group, desulfurizing tower are connect with filtered water tank pipeline, and desulfurizing tower is connect with air-introduced machine pipeline, cycle
Be connected between reaction tank group, wind turbine is connect with circular response pond group pipeline, prepare pond, desulfurizing tower respectively with circular response pond group
One end pipeline connection, desulfurizing tower are connect with the other end pipeline of circular response pond group.
The present invention carries out oxidation processes using independent oxidative system to loop slurry.Substantially, desulfurizing tower in the present invention
Interior generation sediment is mainly calcium sulfite;After calcium sulfite is discharged into circular response pond group, then after adjusting pH value again
It carries out oxidation and generates two hydrated gypsums, that is, calcium sulfate.Circular response pond of the present invention group forms circulating line with desulfurizing tower and returns
Road, desulfurizing tower and circular response pond group are independent and separate.Lime is added in preparing pond, lime forms slurry in preparing pond
Liquid, and prepare in pond and react, lime becomes white lime (main component of slurries is calcium hydroxide herein);It mixes
Slurries inputted in the group of circular response pond by pipeline, uniform stirring (main component of slurries is calcium hydroxide herein);Cycle
Slurries are extracted in desulfurizing tower in reaction tank group, air-introduced machine by flue gas input desulfurizing tower in, flue gas rises in desulfurizing tower and
Slurry liquid contacts, washing removes the sulfur dioxide in flue gas, and (main component of slurries is converted into sulfurous acid by calcium hydroxide herein
Calcium);Slurries after washing are again by the way that in desulfurizing tower bottom discharge to circular response pond group, oxygen is inputted circular response pond by wind turbine
Slurries are made to aoxidize in group, completing entire tower external circulation process, (main component of slurries is converted into sulfuric acid by calcium sulfite herein
Calcium).
The present invention reacts raw material by multiple stage circulation reaction tank as a result, is carried out to slurries in the group of circular response pond
Oxidation is forced, integrated oxidation rate uniform, the saturation degree so as to avoid local calcium sulfate is excessive, avoids and calcium sulfate is caused to exist
It is crystallized in the entire desulphurization system such as tube wall.Circular response pond group synchronous control feed liquor and pulp, avoid fouling, suitable for pushing away extensively
Wide application.
In some embodiments, upper end is equipped with demister, washer in desulfurizing tower, and washer connects with filtered water tank pipeline
It connects;Lower end is equipped with spray thrower in desulfurizing tower, and spray thrower is connect with circular response pond group pipeline.
In some embodiments, two layers of demister, three layers of washer and two layers of spray thrower are equipped in desulfurizing tower.
Two layers of demister and three layers of washer both ensure that state specified standards was fully achieved in flue gas emission as a result, also
The lost moisture of slurries can be supplemented, in addition the pumping slurry (gypsum) of timing, the concentration of stable slurry;Equipped with two layers of spray thrower, increase
Add circular response pond group that slurries are sprayed to the speed in desulfurizing tower, improves reaction efficiency.
In some embodiments, it prepares in pond and circular response pond group and is equipped with blender.
As a result, prepare pond in raw material be sufficiently mixed and circular response pond group in raw material fully react, improve prepare
Reaction efficiency in pond in solution degree of mixing and circular response pond group improves the production efficiency and product quality of whole system.
In some embodiments, filtered water tank is connect by clarified water pump with desulfurizing tower pipeline;Circular response pond group passes through pressure
Power pump group is connect with desulfurizing tower pipeline.
As a result, by increasing the pressure of liquid, liquid energy is made to increase.
In some embodiments, pressure pump group includes main force's pump and stand-by pump.
Main force's pump and stand-by pump are used alternatingly as a result, increase the bulk life time of pressure pump group, and keep pressure pump group
Working efficiency.
In some embodiments, the invention also includes filter press, filter press and the lower channels of circular response pond group to connect
It connects.
The slurries after circular response are completed in the group of circular response pond as a result, filter press is entered by pipeline, slurries at this time
As predominantly calcium sulfate, the gypsum filter cake generated after filter press filters is transported outward.Solution is filtered out to recycle and return to cycle instead
Ying Chizhong is recycled.
In some embodiments, filter press is connect by taking out gypsum pump with circular response pond group pipeline.
As a result, by increasing the pressure of liquid, liquid energy is made to increase.
In some embodiments, it prepares pond and is equipped with PH controllers.
The pH value of solution in pond is prepared in control as a result, ensures that pH value meets the rated value of production system.
According to another aspect of the present invention, outer circulation sulfur method is provided, the outer circulation desulphurization system of the present invention is included,
And include the following steps:
S1, lime is added in preparing pond, lime stirs in preparing pond generates slurries;
Mixed serum in S2, step S1 is inputted by pipeline in the group of circular response pond, and circular response pond group is equal to slurries
Even stirring;
Uniform stirring rear slurry is extracted in desulfurizing tower in S3, circular response pond group, and flue gas is inputted desulfurization by air-introduced machine
In tower, flue gas rises in desulfurizing tower simultaneously and slurry liquid contacts, slurry wash remove the sulfur dioxide in flue gas;
Slurries after S4, washing are again by the way that in desulfurizing tower bottom discharge to circular response pond group, wind turbine follows oxygen input
In ring reaction tank group, slurries is made to aoxidize;
The slurries after oxidation reaction being completed in S5, circular response pond group, filter press being entered by pipeline, filter press is to slurries
Drainage processing is carried out, the gypsum filter cake outward transport formed after drainage filters out solution and recycles and return to cycle profit in the group of circular response pond
With.
Beneficial effects of the present invention are:Entire desulphurization system is simplified, it is in view of the deficiencies in the prior art and insufficient,
This invention improves existing slurry circulation desulfurization system flow.The present invention by multiple stage circulation reaction tank to raw material into
Slurries in the group of circular response pond are carried out pressure oxidation, integrated oxidation rate uniform, so as to avoid local calcium sulfate by row reaction
Saturation degree it is excessive, avoid and calcium sulfate caused to be crystallized in the entire desulphurization system such as tube wall.Prevent desulfurization method of limestone-gypsum
While system generates fouling, it ensure that the stable operation of this system energy and emission compliance, reduce the dosage of liquid to the greatest extent, effectively prolong
Long service life of equipment reduces operating cost for factory.
Description of the drawings
Fig. 1 is the planar structure schematic diagram of the outer circulation desulphurization system of an embodiment of the present invention.
Figure label:1- desulfurizing towers, 11- demisters, 12- washers, 13- spray throwers, 2- water tanks, 21- clarified water pumps, 3- draw
Wind turbine, 4- prepare pond, 41-PH controllers, 5- wind turbines, 6- circular responses pond group, 61- first circulations reaction tank, 62- second circulations
Reaction tank, 63- third circular responses pond, 64- pressure pump group, 65- take out gypsum pump, 7- blenders, 8- filter presses 8.
Specific implementation mode
1 pair of invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 schematically shows one embodiment of the present invention, outer circulation desulphurization system according to the present invention, including
Desulfurizing tower 1, air-introduced machine 3, prepares pond 4, wind turbine 5 and circular response pond group 6 at filtered water tank 2.Preferably, circular response pond group 6 is set
There are three groups of reaction tanks, is first circulation reaction tank 61, second circulation reaction tank 62 and third circular response pond 63 respectively.Desulfurization
Tower 1 is connect with 2 pipeline of filtered water tank;Desulfurizing tower 1 is connect with 3 pipeline of air-introduced machine;It is connected between circular response pond group 6, i.e., first follows
Ring reaction tank 61, second circulation reaction tank 62 and third circular response pond 63 are sequentially communicated;Wind turbine 5 and circular response pond group
6 pipelines connect, i.e., first circulation reaction tank 61, second circulation reaction tank 62 and third circular response pond 63 respectively with wind turbine 5
Pipeline connects;Preparation pond 4, desulfurizing tower 1 are connect with one end pipeline of circular response pond group 6 respectively, that is, prepare pond 4, desulfurizing tower 1 divides
It is not connect with 61 pipeline of first circulation reaction tank;Desulfurizing tower 1 is connect with the other end pipeline of circular response pond group 6, i.e. desulfurizing tower 1
It is connect with 63 pipeline of third circular response pond.
The present invention carries out oxidation processes using independent oxidative system to loop slurry.Substantially, desulfurizing tower 1 in the present invention
Interior generation sediment is mainly calcium sulfite;After calcium sulfite is discharged into circular response pond group 6, then after adjusting pH value again
It carries out oxidation and generates two hydrated gypsums i.e. calcium sulfate.Circular response pond of the present invention group 6 forms circulating line circuit with desulfurizing tower 1,
Desulfurizing tower 1 and circular response pond group 6 independently and separate.Lime is added in preparing pond 4, lime mixes shape in preparing pond 4
It at slurries, and prepares and reacts in pond 4, lime becomes white lime (main component of slurries is calcium hydroxide herein);It is mixed
Slurries made of conjunction are inputted by pipeline in circular response pond group 6, and (main component of slurries is hydroxide to uniform stirring herein
Calcium);Slurries are extracted in desulfurizing tower 1 in circular response pond group 6, and air-introduced machine 3 inputs flue gas in desulfurizing tower 1, and flue gas is de-
Rising and slurry liquid contacts in sulphur tower 1, washing removes the sulfur dioxide in flue gas, and (main component of slurries is turned by calcium hydroxide herein
Turn to calcium sulfite);Slurries after washing are again by 1 bottom discharge of desulfurizing tower to circular response pond group 6, and wind turbine 5 is by oxygen
Slurries are made to aoxidize in input circular response pond group 6, completing entire tower external circulation process, (main component of slurries is by sulfurous acid herein
Calcium is converted into calcium sulfate).
The present invention reacts raw material by multiple stage circulation reaction tank as a result, is carried out to slurries in circular response pond group 6
Oxidation is forced, integrated oxidation rate uniform, the saturation degree so as to avoid local calcium sulfate is excessive, avoids and calcium sulfate is caused to exist
It is crystallized in the entire desulphurization system such as tube wall.6 synchronous control feed liquor of circular response pond group and pulp, avoid fouling, are suitable for extensive
It promotes and applies.
In conjunction with Fig. 1, upper end is equipped with demister 11, washer 12 in desulfurizing tower 1, and washer 12 is connect with 2 pipeline of filtered water tank;
Lower end is equipped with spray thrower 13 in desulfurizing tower 1, and spray thrower 13 is connect with 6 pipeline of circular response pond group.
In conjunction with Fig. 1, two layers of demister, 11, three layers of washer 12 and two layers of spray thrower 13 are equipped in desulfurizing tower 1.
Two layers of demister 11 and three layers of washer 12 both ensure that the mark of national regulation was fully achieved in flue gas emission as a result,
Standard, supplemented with the moisture that slurries scatter and disappear, in addition the pumping slurry (gypsum) of timing, the concentration of stable slurry;It is sprayed equipped with two layers
Device 13 increases circular response pond group 6 and slurries is sprayed the speed in desulfurizing tower 1, improves reaction efficiency.
In conjunction with Fig. 1, prepares and be equipped with blender 7 in pond 4 and circular response pond group 6.
As a result, prepare pond 4 in raw material be sufficiently mixed and circular response pond group 6 in raw material fully react, raising is matched
Reaction efficiency in pond 4 processed in solution degree of mixing and circular response pond group 6 improves the production efficiency and product matter of whole system
Amount.
In conjunction with Fig. 1, filtered water tank 2 is connect by clarified water pump 21 with 1 pipeline of desulfurizing tower;Circular response pond group 6 passes through compression pump
Group 64 is connect with 1 pipeline of desulfurizing tower.
As a result, by increasing the pressure of liquid, liquid energy is made to increase.
In conjunction with Fig. 1, pressure pump group 64 includes main force's pump and stand-by pump.
Main force's pump and stand-by pump are used alternatingly as a result, increase the bulk life time of pressure pump group 64, and keep pressure pump group
64 working efficiency.
In conjunction with Fig. 1, the invention also includes filter press 8, filter press 8 is connect with the lower channel of circular response pond group 6, that is, is pressed
Filter 8 is connect with the lower channel of first circulation reaction tank 61, second circulation reaction tank 62 and third circular response pond 63, and first
The pipe influx and filter press 8 of the lower end of 63 three of circular response pond 61, second circulation reaction tank 62 and third circular response pond
It is connected.
The slurries after circular response are completed in circular response pond group 6 as a result, filter press 8 is entered by pipeline, slurry at this time
Liquid becomes predominantly calcium sulfate, the gypsum filter cake outward transport generated after the filtering of filter press 8.Solution is filtered out to recycle and return to cycle
It is recycled in reaction tank group 6.
In conjunction with Fig. 1, filter press 8 is connect by taking out gypsum pump 65 with 6 pipeline of circular response pond group.
As a result, by increasing the pressure of liquid, liquid energy is made to increase.
In conjunction with Fig. 1, prepares pond 4 and be equipped with PH controllers 41.
The pH value of solution in pond 4 is prepared in control as a result, ensures that pH value meets the rated value of production system.
In conjunction with Fig. 1, wind turbine 5 is roots blower.
Roots blower is suitable for gas conveying and the compression system of low-pressure occasion as a result, so the present invention preferably adopts
Use roots blower.
The present invention is equipped with PLC control system and carries out interval to the clarified water pump 21 of the present invention, each water supply control valve Deng Ge mechanisms
Formula controls, and controls the pump housing of the present invention, 7 Deng Ge mechanisms of each blender.
According to another aspect of the present invention, outer circulation sulfur method is provided, the outer circulation desulphurization system of the present invention is included,
And include the following steps:
S1, lime is added in preparing pond 4, lime mixes in preparing pond 4 generates slurries, and lime is preparing pond 4
In react, lime becomes white lime;(main component of slurries is calcium hydroxide herein)
S2, the slurries mixed are inputted by pipeline in circular response pond group 6, and slurries are equal in circular response pond group 6
Even stirring;(main component of slurries is calcium hydroxide herein)
Slurries are extracted in desulfurizing tower 1 in S3, circular response pond group 6, and flue gas is passed through in desulfurizing tower 1 by air-introduced machine 3, cigarette
Gas rises in desulfurizing tower 1 and is washed to flue gas with slurry liquid contacts, slurries, removes the sulfur dioxide in flue gas, removal two
Flue gas after sulfur oxide is purified by desulfurizing tower outside discharge tower;(main component of slurries is converted into sulfurous by calcium hydroxide herein
Sour calcium)
Slurries after S4, washing are again by the way that in 1 bottom discharge of desulfurizing tower to circular response pond group 6, wind turbine 5 inputs oxygen
So that slurries is aoxidized in circular response pond group 6, completes entire tower external circulation process;(main component of slurries is by calcium sulfite herein
It is converted into calcium sulfate)
The slurries after oxidation reaction being completed in S5, circular response pond group 6, filter press 8 being entered by pipeline, filter press 8 is to slurry
Liquid carries out drainage processing, the gypsum filter cake outward transport formed after drainage, filters out solution and recycles and return and is recycled in circular response pond group 6
It utilizes.
Beneficial effects of the present invention are:Entire desulphurization system is simplified, it is in view of the deficiencies in the prior art and insufficient,
This invention improves existing slurry system flow.The present invention reacts raw material by multiple stage circulation reaction tank,
Pressure oxidation, integrated oxidation rate uniform, so as to avoid the saturation of local calcium sulfate are carried out to slurries in circular response pond group 6
It spends greatly, avoids and calcium sulfate is caused to be crystallized in the entire desulphurization system such as tube wall.Prevent desulfurization method of limestone-gypsum system from giving birth to
While at fouling, the stable operation of this system energy and emission compliance ensure that, reduce the dosage of liquid to the greatest extent, effectively extend equipment
Service life reduces operating cost for factory.6 synchronous control feed liquor of circular response pond group and pulp, avoid fouling, are suitable for wide
General popularization and application.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to the protection model of the present invention
It encloses.
Claims (10)
1. outer circulation desulphurization system, which is characterized in that including desulfurizing tower (1), filtered water tank (2), air-introduced machine (3), prepare pond (4),
Wind turbine (5) and circular response pond group (6), the desulfurizing tower (1) connect with filtered water tank (2) pipeline, the desulfurizing tower (1) with draw
Wind turbine (3) pipeline connects, and is connected between circular response pond group (6), the wind turbine (5) and circular response pond group (6) pipeline
Connection, preparation pond (4), desulfurizing tower (1) are connect with one end pipeline of circular response pond group (6) respectively, the desulfurizing tower (1)
It is connect with the other end pipeline of circular response pond group (6).
2. outer circulation desulphurization system according to claim 1, which is characterized in that the interior upper end of the desulfurizing tower (1) is equipped with and removes
Day with fog (11), washer (12), the washer (12) connect with filtered water tank (2) pipeline;The interior lower end of the desulfurizing tower (1) is equipped with
Spray thrower (13), the spray thrower (13) connect with circular response pond group (6) pipeline.
3. outer circulation desulphurization system according to claim 2, which is characterized in that removed equipped with two layers in the desulfurizing tower (1)
Day with fog (11), three layers of washer (12) and two layers of spray thrower (13).
4. outer circulation desulphurization system according to claim 1, which is characterized in that the preparation pond (4) and circular response pond
Blender (7) is equipped in group (6).
5. according to any outer circulation desulphurization system of claims 1 or 2, which is characterized in that the filtered water tank (2) is by clear
Water pump (21) is connect with desulfurizing tower (1) pipeline;Circular response pond group (6) is managed by pressure pump group (64) and desulfurizing tower (1)
Road connects.
6. outer circulation desulphurization system according to claim 5, which is characterized in that pressure pump group (64) include the main force pump and it is standby
With pump.
7. outer circulation desulphurization system according to claim 1, which is characterized in that further include filter press (8), the filter press
(8) it is connect with the lower channel of circular response pond group (6).
8. outer circulation desulphurization system according to claim 7, which is characterized in that the filter press (8) is pumped by taking out gypsum
(65) it is connect with circular response pond group (6) pipeline.
9. outer circulation desulphurization system according to claim 1, which is characterized in that the preparation pond (4) controls equipped with PH
Instrument (41).
10. outer circulation sulfur method, including any outer circulation desulphurization systems of claim 1-9, which is characterized in that including
Following steps:
S1. lime is added in the preparation pond (4), lime mixing in the preparation pond (4) generates slurries;
S2. the slurries for mixing generation are inputted by pipeline in circular response pond group (6), and circular response pond group (6) is to slurries
Uniform stirring;
S3. the interior uniform stirring rear slurry of circular response pond group (6) is extracted in desulfurizing tower (1), and the air-introduced machine (3) will
Flue gas is passed through in desulfurizing tower (1), flue gas rise in the desulfurizing tower (1) and and slurry liquid contacts, the interior slurries of the desulfurizing tower (1)
Flue gas is washed, the sulfur dioxide in flue gas is removed, the flue gas after sulfur dioxide is removed and discharge tower is purified by desulfurizing tower
Outside;
S4. the slurries after washing are again by the desulfurizing tower (1) bottom discharge to circular response pond group (6), the wind turbine (5)
By in oxygen input circular response pond group (6), slurries is made to aoxidize;
S5. the slurries after oxidation reaction are completed in circular response pond group (6), and filter press (8), the pressure are entered by pipeline
Filter (8) carries out drainage processing to slurries, and the gypsum filter cake outward transport formed after drainage filters out solution and recycles and return to circular response
Pond group recycles in (6).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109692551A (en) * | 2019-01-25 | 2019-04-30 | 鲍可可 | A kind of calcium method fume desulphurization method |
| CN110813046A (en) * | 2019-11-29 | 2020-02-21 | 杨昆 | Double-circulation desulfurization device and desulfurization process |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102886199A (en) * | 2012-10-26 | 2013-01-23 | 煤炭工业济南设计研究院有限公司 | Flue gas desulfurization device and desulfurization method by magnesium oxide process |
| CN103263840A (en) * | 2013-05-23 | 2013-08-28 | 四川清源环境工程有限公司 | Method and device for recycling sulfur dioxide resources of zinc smelting enterprises |
| CN104740992A (en) * | 2015-03-20 | 2015-07-01 | 凯天环保科技股份有限公司 | Flue gas deep desulfurization and dust removal device and method by use of carbide slag-gypsum method |
| CN205886585U (en) * | 2016-06-14 | 2017-01-18 | 沈阳怡森环保科技有限公司 | Desulfidation dedusting system |
| CN206121504U (en) * | 2016-10-21 | 2017-04-26 | 佛山市普蓝环境工程有限公司 | Lime gypsum tower extrinsic cycle desulfurization system |
| CN106890505A (en) * | 2017-04-14 | 2017-06-27 | 哈尔滨理工大学 | A kind of double alkali method desulfurizing system filters intermediate processing |
| CN107213776A (en) * | 2017-06-29 | 2017-09-29 | 姜顺民 | The outer double circulation desulphurization system of tower and its sulfur removal technology |
| CN207142958U (en) * | 2017-08-24 | 2018-03-27 | 辽宁新都黄金有限责任公司 | A kind of cyaniding tailing slurry processing system |
| CN208406600U (en) * | 2018-07-12 | 2019-01-22 | 佛山市信利成机电设备有限公司 | outer circulation desulphurization system |
-
2018
- 2018-07-12 CN CN201810764889.9A patent/CN108686482A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102886199A (en) * | 2012-10-26 | 2013-01-23 | 煤炭工业济南设计研究院有限公司 | Flue gas desulfurization device and desulfurization method by magnesium oxide process |
| CN103263840A (en) * | 2013-05-23 | 2013-08-28 | 四川清源环境工程有限公司 | Method and device for recycling sulfur dioxide resources of zinc smelting enterprises |
| CN104740992A (en) * | 2015-03-20 | 2015-07-01 | 凯天环保科技股份有限公司 | Flue gas deep desulfurization and dust removal device and method by use of carbide slag-gypsum method |
| CN205886585U (en) * | 2016-06-14 | 2017-01-18 | 沈阳怡森环保科技有限公司 | Desulfidation dedusting system |
| CN206121504U (en) * | 2016-10-21 | 2017-04-26 | 佛山市普蓝环境工程有限公司 | Lime gypsum tower extrinsic cycle desulfurization system |
| CN106890505A (en) * | 2017-04-14 | 2017-06-27 | 哈尔滨理工大学 | A kind of double alkali method desulfurizing system filters intermediate processing |
| CN107213776A (en) * | 2017-06-29 | 2017-09-29 | 姜顺民 | The outer double circulation desulphurization system of tower and its sulfur removal technology |
| CN207142958U (en) * | 2017-08-24 | 2018-03-27 | 辽宁新都黄金有限责任公司 | A kind of cyaniding tailing slurry processing system |
| CN208406600U (en) * | 2018-07-12 | 2019-01-22 | 佛山市信利成机电设备有限公司 | outer circulation desulphurization system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109692551A (en) * | 2019-01-25 | 2019-04-30 | 鲍可可 | A kind of calcium method fume desulphurization method |
| CN110813046A (en) * | 2019-11-29 | 2020-02-21 | 杨昆 | Double-circulation desulfurization device and desulfurization process |
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