CN208406600U - outer circulation desulphurization system - Google Patents
outer circulation desulphurization system Download PDFInfo
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- CN208406600U CN208406600U CN201821109317.9U CN201821109317U CN208406600U CN 208406600 U CN208406600 U CN 208406600U CN 201821109317 U CN201821109317 U CN 201821109317U CN 208406600 U CN208406600 U CN 208406600U
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- circular response
- desulfurizing tower
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- response pond
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Abstract
The utility model provides outer circulation desulphurization system, including desulfurizing tower, filtered water tank, air-introduced machine, prepare pond, blower and circular response pond group, desulfurizing tower is connect with filtered water tank pipeline, desulfurizing tower is connect with air-introduced machine pipeline, it is connected between the group of circular response pond, blower is connect with circular response pond group pipeline, and 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.Thus, the utility model reacts raw material by multiple stage circulation reaction tank, carries out pressure oxidation, integrated oxidation rate uniform to slurries in the group of circular response pond, saturation degree so as to avoid local calcium sulfate is excessive, avoids and calcium sulfate is caused to crystallize in the entire desulphurization system such as tube wall.Circular response pond group synchronously control feed liquor and pulp, avoid fouling, are suitable for wide popularization and application.
Description
Technical field
The utility model belongs to discarded purification emissions field, in particular to a kind of outer circulation desulphurization system.
Background technique
Currently, lime-gypsum method sulfur removal technology is high with its desulfuration efficiency in the flue gas desulfurization technique of China's coal-burning boiler,
The low advantage of operating cost occupies very big specific gravity.
But by the follow-up investigation to lime-gypsum method desulfurizing item in recent years, longtime running is passed through in discovery,
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 blocking, 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.
Utility model content
One aspect according to the present utility model provides outer circulation desulphurization system, including desulfurizing tower, filtered water tank, air inducing
Machine, preparation pond, blower and circular response pond group, desulfurizing tower are connect with filtered water tank pipeline, and desulfurizing tower is connect with air-introduced machine pipeline,
Be connected between the group of circular response pond, blower is connect with circular response pond group pipeline, prepare pond, desulfurizing tower respectively with circular response pond
One end pipeline connection of group, desulfurizing tower are connect with the other end pipeline of circular response pond group.
The utility model carries out oxidation processes to loop slurry using independent oxidative system.Substantially, the utility model
It is mainly calcium sulfite that sediment is generated in middle desulfurizing tower；After calcium sulfite is discharged into circular response pond group, then adjust
Oxidation is carried out after pH value again and generates two hydrated gypsums, that is, calcium sulfate.The utility model circular response pond group and desulfurization are tower-shaped
At circulating line circuit, desulfurizing tower and circular response pond group independently and are separated.Lime is added in preparing pond, lime is being prepared
Slurries are formed in pond, and prepares in pond and reacts, and lime becomes white lime, and (main component of slurries is hydroxide herein
Calcium)；The slurries mixed are inputted in the group of circular response pond by pipeline, and (main component of slurries is hydrogen to uniform stirring herein
Calcium oxide)；Slurries are extracted in desulfurizing tower in the group of circular response pond, and air-introduced machine inputs flue gas in desulfurizing tower, and flue gas is de-
Rising and slurry liquid contacts in sulphur tower, 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 pass through desulfurizing tower bottom discharge into circular response pond group again, and blower inputs oxygen
Aoxidize slurries in the group of circular response pond, completing entire tower external circulation process, (main component of slurries is turned by calcium sulfite herein
Turn to calcium sulfate).
The utility model reacts raw material by multiple stage circulation reaction tank as a result, to slurries in the group of circular response pond
Pressure oxidation is carried out, integrated oxidation rate uniform, the saturation degree so as to avoid local calcium sulfate is excessive, avoids and causes sulfuric acid
Calcium crystallizes in the entire desulphurization system such as tube wall.Circular response pond group synchronously control feed liquor and pulp, avoid fouling, are suitable for wide
General popularization and application.
In some embodiments, upper end is equipped with demister, washer in desulfurizing tower, and washer and filtered water tank pipeline connect
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 of timing is starched (gypsum), 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 sufficiently 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 fresh 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, increase liquid energy.
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 utility model further includes filter press, the lower end pipe of filter press and circular response pond group
Road connection.
Slurries after completing circular response in the group of circular response pond as a result, enter filter press 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 circulation 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, increase liquid energy.
In some embodiments, it prepares pond and is equipped with PH controller.
The pH value of solution in pond is prepared in control as a result, guarantees that pH value meets the rated value of production system.
The utility model is equipped with fresh water pump 21 of the PLC control system to the utility model, each water supply control valve Deng Ge mechanism
Intermittent control is carried out, the pump housing of the utility model, 7 Deng Ge mechanism of each blender are controlled.
The specifically used method of the utility model, comprising the following steps:
S1, lime is added in preparing pond, lime stirring in preparing pond generates slurries；
Mixed serum in S2, step S1 is inputted in the group of circular response pond by pipeline, 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 pass through desulfurizing tower bottom discharge into circular response pond group again, and blower follows oxygen input
In ring reaction tank group, aoxidize slurries；
Slurries after completing oxidation reaction in S5, circular response pond group enter filter press by pipeline, and 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 circulation benefit in the group of circular response pond
With.
The utility model has the following beneficial effects: simplify entire desulphurization system, in view of the deficiencies in the prior art and
Deficiency, this item utility model improve existing slurry circulation desulfurization system flow.The utility model passes through multiple stage circulation
Reaction tank reacts raw material, carries out pressure oxidation, integrated oxidation rate uniform, to keep away to slurries in the group of circular response pond
The saturation degree for having exempted from local calcium sulfate is excessive, avoids and calcium sulfate is caused to crystallize in the entire desulphurization system such as tube wall.Prevent stone
While lime stone-ammonia-plaster mode desulphurization system generates fouling, it ensure that the stable operation of this system energy and emission compliance, reduce medicine to the greatest extent
The dosage of liquid, effectively extension service life of equipment, reduce operating cost for factory.
Detailed description of the invention
Fig. 1 is the planar structure schematic diagram of the outer circulation desulphurization system of one embodiment of the utility model.
Figure label: 1- desulfurizing tower, 11- demister, 12- washer, 13- spray thrower, 2- water tank, 21- fresh water pump, 3-
Air-introduced machine, 4- prepare pond, 41-PH controller, 5- blower, 6- circular response pond group, 61- first circulation reaction tank, 62- second
Circular response pond, 63- third circular response pond, 64- pressure pump group, 65- take out gypsum pump, 7- blender, 8- filter press 8.
Specific embodiment
1 pair of utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 schematically shows a kind of embodiment of the utility model, outer circulation desulfurization according to the present utility model
System, including desulfurizing tower 1, filtered water tank 2, air-introduced machine 3, preparation pond 4, blower 5 and circular response pond group 6.Preferably, it recycles
Reaction tank group 6 is equipped with three groups of reaction tanks, is that first circulation reaction tank 61, second circulation reaction tank 62 and third circulation are anti-respectively
Answer pond 63.Desulfurizing 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
Logical, i.e., first circulation reaction tank 61, second circulation reaction tank 62 and third circular response pond 63 are sequentially communicated；Blower 5 with
The connection of 6 pipeline of circular response pond group, i.e. first circulation reaction tank 61, second circulation reaction tank 62 and third circular response pond
63 connect with 5 pipeline of blower respectively；Preparation pond 4, desulfurizing tower 1 are connect with one end pipeline of circular response pond group 6 respectively, that is, are prepared
Pond 4, desulfurizing tower 1 are connect with 61 pipeline of first circulation reaction tank respectively；The other end pipeline of desulfurizing tower 1 and circular response pond group 6
Connection, i.e., desulfurizing tower 1 is connect with 63 pipeline of third circular response pond.
The utility model carries out oxidation processes to loop slurry using independent oxidative system.Substantially, the utility model
Generating sediment in middle desulfurizing tower 1 is mainly calcium sulfite；After calcium sulfite is discharged into circular response pond group 6, then adjust
Oxidation is carried out again after section pH value generates two hydrated gypsums i.e. calcium sulfate.The utility model circular response pond group 6 and the formation of desulfurizing tower 1
Circulating line circuit, desulfurizing tower 1 and circular response pond group 6 are independent and separate.Lime is added in preparing pond 4, lime is being matched
Slurries are mixed to form in pond 4 processed, and prepares and reacts in pond 4, lime becomes the white lime (main component of slurries herein
For calcium hydroxide)；The slurries mixed are inputted in circular response pond group 6 by pipeline, the uniform stirring (master of slurries herein
Wanting ingredient is calcium hydroxide)；Slurries are extracted in desulfurizing tower 1 in circular response pond group 6, and flue gas is inputted desulfurization by air-introduced machine 3
In tower 1, flue gas rises in desulfurizing tower 1 and slurry liquid contacts, and (slurries is main herein for the sulfur dioxide in washing removing flue gas
Ingredient is converted into calcium sulfite by calcium hydroxide)；Slurries after washing pass through 1 bottom discharge of desulfurizing tower to circular response pond group again
In 6, blower 5, which inputs oxygen in circular response pond group 6, aoxidizes slurries, completes entire tower external circulation process (slurries herein
Main component is converted into calcium sulfate by calcium sulfite).
The utility model reacts raw material by multiple stage circulation reaction tank as a result, to slurries in circular response pond group 6
Pressure oxidation is carried out, integrated oxidation rate uniform, the saturation degree so as to avoid local calcium sulfate is excessive, avoids and causes sulfuric acid
Calcium crystallizes in the entire desulphurization system such as tube wall.6 synchronously control feed liquor of circular response pond group and pulp, avoid fouling, are suitable for
Wide popularization and application.
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 can also supplement the lost moisture of slurries, in addition the pumping of timing is starched (gypsum), the concentration of stable slurry；It is sprayed equipped with two layers
Device 13 increases circular response pond group 6 for slurries and sprays 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 sufficiently 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 fresh water pump 21 with 1 pipeline of desulfurizing tower；Circular response pond group 6 passes through pressure pump
Group 64 is connect with 1 pipeline of desulfurizing tower.
As a result, by increasing the pressure of liquid, increase liquid energy.
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 utility model further includes filter press 8, and filter press 8 is connect with the lower channel of circular response pond group 6,
I.e. filter press 8 is connect with the lower channel of first circulation reaction tank 61, second circulation reaction tank 62 and third circular response pond 63,
The pipe influx and pressure of the lower end of 63 three of first circulation reaction tank 61, second circulation reaction tank 62 and third circular response pond
Filter 8 is connected.
Slurries after completing circular response in circular response pond group 6 as a result, enter filter press 8 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 circulation
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, increase liquid energy.
In conjunction with Fig. 1, prepares pond 4 and be equipped with PH controller 41.
The pH value of solution in pond 4 is prepared in control as a result, guarantees that pH value meets the rated value of production system.
In conjunction with Fig. 1, blower 5 is roots blower.
Roots blower is suitable for gas conveying and the compression system of low-pressure occasion as a result, so the utility model is preferred
Ground uses roots blower.
The utility model is equipped with fresh water pump 21 of the PLC control system to the utility model, each water supply control valve Deng Ge mechanism
Carry out intermittent control.
The specifically used method of the utility model, comprising the following steps:
S1, lime is added in preparing pond 4, lime mixing 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 in circular response pond group 6 by pipeline, 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 washs with slurry liquid contacts, slurries to flue gas, removes the sulfur dioxide in flue gas, removal two
Flue gas after sulfur oxide is purified outside discharge tower by desulfurizing tower；(main component of slurries is converted into sulfurous by calcium hydroxide herein
Sour calcium)
Slurries after S4, washing pass through 1 bottom discharge of desulfurizing tower into circular response pond group 6 again, and blower 5 inputs oxygen
Slurries are aoxidized in circular response pond group 6, complete entire tower external circulation process；(main component of slurries is by calcium sulfite herein
It is converted into calcium sulfate)
Slurries after completing oxidation reaction in S5, circular response pond group 6 enter filter press 8,8 pairs of filter press slurries by pipeline
Liquid carries out drainage processing, the gypsum filter cake outward transport formed after drainage, filters out solution and recycles and return and recycles in circular response pond group 6
It utilizes.
The utility model has the following beneficial effects: simplify entire desulphurization system, in view of the deficiencies in the prior art and
Deficiency, this item utility model improve existing slurry system flow.The utility model passes through multiple stage circulation reaction tank pair
Raw material is reacted, and carries out pressure oxidation, integrated oxidation rate uniform, so as to avoid office to slurries in circular response pond group 6
The saturation degree of portion's calcium sulfate is excessive, avoids and calcium sulfate is caused to crystallize in the entire desulphurization system such as tube wall.Prevent lime stone-stone
While cream method desulphurization system generates fouling, it ensure that the stable operation of this system energy and emission compliance, reduce the use of medical fluid to the greatest extent
Amount, effectively extension service life of equipment, reduce operating cost for factory.6 synchronously control feed liquor of circular response pond group and pulp,
Fouling is avoided, wide popularization and application is suitable for.
Above-described is only some embodiments of the utility model.For those of ordinary skill in the art,
Without departing from the concept of the present invention, various modifications and improvements can be made, these belong to practical
Novel protection scope.
Claims (9)
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),
Blower (5) and circular response pond group (6), the desulfurizing tower (1) connect with filtered water tank (2) pipeline, the desulfurizing tower (1) with draw
Blower (3) pipeline connects, and is connected between circular response pond group (6), the blower (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 be equipped with two layers and remove 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) are equipped in group (6).
5. according to claim 1 or 2 any outer circulation desulphurization systems, which is characterized in that the filtered water tank (2) passes through 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 connection.
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 by taking out gypsum pump
(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).
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| CN201821109317.9U CN208406600U (en) | 2018-07-12 | 2018-07-12 | outer circulation desulphurization system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821109317.9U CN208406600U (en) | 2018-07-12 | 2018-07-12 | outer circulation desulphurization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108686482A (en) * | 2018-07-12 | 2018-10-23 | 佛山市信利成机电设备有限公司 | Outer circulation desulphurization system and apply its outer circulation sulfur method |
-
2018
- 2018-07-12 CN CN201821109317.9U patent/CN208406600U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108686482A (en) * | 2018-07-12 | 2018-10-23 | 佛山市信利成机电设备有限公司 | Outer circulation desulphurization system and apply its outer circulation sulfur method |
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