CN206232464U - A kind of double aerating systems for sea water desulfuration - Google Patents
A kind of double aerating systems for sea water desulfuration Download PDFInfo
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- CN206232464U CN206232464U CN201620825929.2U CN201620825929U CN206232464U CN 206232464 U CN206232464 U CN 206232464U CN 201620825929 U CN201620825929 U CN 201620825929U CN 206232464 U CN206232464 U CN 206232464U
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- aeration tank
- aerating
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- seawater
- aerator
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Abstract
The utility model discloses a kind of double aerating systems for sea water desulfuration, including：First aerating system, it includes that, located at the first aerator in absorption tower, first aerator is connected with the first oxidation air pipeline, and the first oxidation air pipeline is provided with the first oxidation fan；Second aerating system, its outside for being located at absorption tower, second aerating system includes aeration tank, and the second aerator is provided with the aeration tank, second aerator is connected with the second oxidation air pipeline, and the second oxidation air pipeline is provided with the second oxidation fan.Correspondingly, the invention also discloses a kind of Deuslfurizing system for sea water, it includes absorption tower and double aerating systems mentioned above.Described in the utility model pair of aerating system has aeration efficiency high, and floor space is small, it is not easy to which SO occurs2Again overflow, the advantage of effectively save operating cost and cost of investment.
Description
Technical field
The utility model is related to a kind of aerating system, more particularly to a kind of aerating system for seawater.
Background technology
Based on coal, its consumption figure accounts for 70% or so of primary energy aggregate consumption, this office to the Energy Mix of China
Face will not change within considerable time from now on.Thermal power plant is generated electricity using coal as main fuel, and coal directly burns release
Go out a large amount of SO2, cause air environmental pollution, and being incremented by with installed capacity, SO2Discharge capacity be also continuously increased.Reinforcing ring
Border protection is the important guarantee of China's the Implement of sustainable development strategy, is increased to thermal power plant SO2The control of discharge capacity just seems non-
Normal urgent and necessity.In order to the discharge for controlling SO2 meets environmental requirement, have been carried out both at home and abroad various desulfurization technologies research and
Using.
Desulfurization before the main divided combustion of flue gas desulfurization, desulfurization after desulfurization and burning in burning.Flue gas desulfurization FGD after burning
(Flue Gas Desulfurization) is the SO generally used in the world today2Discharge control method, because this desulfurization
Method does not influence burning and heat exchange in stove.Wet Flue Gas Desulfurization Technology accounts for 85% or so in flue gas desulfurization, wherein most common wet
Method desulfurization technology is limestone-gypsum method.Flue gas desulfurization with seawater technique is to remove SO in flue gas with natural sea-water as absorbent2
Wet Flue Gas Desulfurization Technique.Seawater desulfurizing process has advantages below and is obtained in the whole world compared to traditional Wet Flue Gas Desulfurization Technique
Substantial amounts of popularization and application：With seawater as absorbent, can fresh-water-saving resource；Desulfuration efficiency is high, general up to more than 90%；Do not produce
Raw byproduct and discarded object, non-secondary pollution；The problems such as in the absence of equipment and pipeline scale, blocking, system availability is high；Technology
Maturation, process is simple is easy to maintenance, and investment, operating cost are low.
The general principle of sea water desulfuration be using seawater natural alkalinity (seawater in itself contain a large amount of soluble salts and weak acid root
Ion) the sour gas SO that comes in absorbing and removing flue gas2, the seawater for absorbing sour gas makes water through sea water desulfuration aerating system
Sea is entered after matter is up to standard.The technological process of sea water desulfuration is usually：Flue gas from boiler dust remover after cooling from
Bottom of towe enters spray absorber, is inversely fully contacted with the seawater that tower top uniformly sprays and mixed, and seawater is by the SO in flue gas2Absorb
Generation SO3 2-, the flue gas after purification is by after airair heat exchanger (GGH) intensification, air being entered through chimney.From absorption tower
The seawater that seawater is discharged with condenser is sufficiently mixed in aeration tank, while by aerating system to blasting appropriate compression in pond
Air, makes the sulphite in seawater force to be oxidized to stablize harmless sulfate, while discharging CO2, make the pH value of seawater
Rise to the regulation value of local permission, it is up to standard after enter sea.
In sea water desulfuration aerating system, aeration tank is the main units of sea water desulfuration aerating system, but because it is accounted for
Ground area is larger so that sea water desulfuration aerating system scale is excessively huge, and cost increases.Additionally, aeration tank inlet flow rate is high, make
High into middle flow velocity, edge flow velocity is low, and sectional flow is uneven.Meanwhile, aeration tank of the prior art is also present：In aeration tank
Uneven aerator (such as aeration board, aeration plate) impact to being arranged in centre of seawater flowing is big, easily causes part aeration and sets
Standby to damage, the seawater of center is high due to flow velocity, and residence time is limited in aeration tank, it is impossible to fresh seawater and oxidation sky
Gas is sufficiently mixed and causes aeration effect not good, and the seawater for not neutralizing oxidation completely causes SO in acid condition2Again overflow, with
And aeration tank outlet seawater quality it is unstable the problems such as.
Utility model content
The purpose of this utility model is to provide a kind of double aerating systems for sea water desulfuration, and this pair of aerating system has exposure
Gas efficiency high, floor space is small, it is not easy to which SO occurs2Again overflow, the advantage of effectively save operating cost and cost of investment.
According to above-mentioned utility model purpose, the utility model proposes a kind of double aerating systems for sea water desulfuration, bag
Include：
First aerating system, it is included located at the first aerator, first aerator and the first oxygen in absorption tower
Change air duct connection, the first oxidation air pipeline is provided with the first oxidation fan；
Second aerating system, its outside for being located at absorption tower, second aerating system includes aeration tank, the aeration tank
The second aerator is inside provided with, second aerator is connected with the second oxidation air pipeline, the second oxidation air pipe
Road is provided with the second oxidation fan.
In the double aerating systems for sea water desulfuration described in the utility model, the first aerating system is used for absorption tower
Interior seawater is aerated, due to completing desulphurization reaction (the desulphurization reaction SO that referred to Absorption by Sea Water in absorption tower2Reaction)
Seawater contain a large amount of unstable sulphite so that seawater can cause to regenerate SO in acid condition in acidity2, make
Into SO2Again overflow, it is therefore desirable to by the sulfite oxidation in seawater into sulfate.Inventor is had found based on this, it is proposed that
First aerating system is set in absorption tower.The first described aerating system includes the first aerator in absorption tower,
First aerator is connected with the first oxidation air pipeline, and the first oxidation air pipeline is provided with the first oxidation fan.
In the technical program, oxidizing gas is passed through in absorption tower from the first oxidation air pipeline, and part in the seawater in absorption tower is sub-
Oxide sulfate, improves the pH value of the seawater in absorption tower, improves the acid condition of absorption tower maritime interior waters, thus, significantly
Reduce SO2Spilling again, improve the desulfuration efficiency on absorption tower.
Seawater in absorption tower is further aoxidized when being passed into outside absorption tower by the second aerating system, so as to reach
Can discharge standard, be expelled to big marine.Second aerating system includes aeration tank, the second aeration is provided with the aeration tank and is set
Standby, second aerator is connected with the second oxidation air pipeline, and the second oxidation air pipeline is provided with the second oxidation
Blower fan.In the technical program, aerated reaction refers to the reaction that sulphite in seawater is oxidized to sulfate.
The technical program is aerated twice by double aerating systems to seawater, so as to improve the desulfuration efficiency of seawater,
And because the first aerating system is arranged in absorption tower, the floor space of the second aerating system is thereby saving, so as to compare
In prior art, the technical program greatly reduces the floor space and investment operating cost of aerating system.
Further, in described in the utility model pair of aerating system, the first cofferdam is provided with the aeration tank, will
The first space and second space are divided into inside aeration tank, first space connects with the arrival end of aeration tank, described second
Space connects with the port of export of aeration tank, and second aerator is in the second space.
The first cofferdam will be divided into the first space and in described in the utility model pair of aerating system inside aeration tank
Two spaces, so that the fresh seawater of the seawater and bypass in absorption tower uniformly mixes in the first space, it is mixed mixed
Close seawater to be flowed into second space through the first cofferdam, after there is aerated reaction through the second aerator, being reached in mixing seawater can
After discharge standard, sea is emitted into.
Additionally, in seawater in absorption tower and the fresh seawater mixed process of bypass, part in the seawater in absorption tower
The fresh seawater that can be bypassed first of sulphite in the dissolved oxygen rapid oxidation that carries naturally, remaining a large amount of sulphite
The substantial amounts of oxidizing gas that root is then blasted in second space by the second aerator is aoxidized, and the pH value of seawater is further carried
Height, simultaneously as the natural alkalinity of the fresh seawater of bypass can also neutralize the acidic materials in the seawater in absorption tower so that most
Arrange eventually and meet environmental requirement to the mixing seawater pH value in sea.
Additionally, the first cofferdam also has makes the gentle effect of mixing seawater uniform fluid flow, so as to reduce because current are too urgent
It is caused to the second aerator impact damage, and uniform gentle mixing seawater current increased the stop in aeration tank
Time, such that it is able to make aeration more abundant.
It should be noted that in the technical program, fresh seawater refers to not absorb SO2Seawater.
Further, in described in the utility model pair of aerating system, first cofferdam is arranged at phase in aeration tank
To near the position of aeration tank arrival end.
Further, in described in the utility model pair of aerating system, arrival end of first cofferdam far from aeration tank
Distance be 2.5-4m.
Further, in described in the utility model pair of aerating system, the second cofferdam is additionally provided with the aeration tank, with
Second space is divided into the 3rd space and the 4th space, the 4th space connects with the port of export of aeration tank, described second
Aerator is in the 3rd space.
In described in the utility model pair of aerating system, in order to further improve sea water mixing effect, seawater water is reduced
Stream flow velocity, is additionally provided with the second cofferdam, while the setting in the second cofferdam can make mixing seawater in aeration tank in the aeration tank
Middle increased resident time, so as to improve aeration effect.
Further, in described in the utility model pair of aerating system, second cofferdam is arranged at phase in aeration tank
To near the position of the aeration tank port of export.
Further, in described in the utility model pair of aerating system, the port of export of second cofferdam far from aeration tank
Distance be 2.5-4m.
Correspondingly, the utility model also proposed a kind of Deuslfurizing system for sea water, and it includes absorption tower and as described above
Double aerating systems.
Double aerating systems for sea water desulfuration described in the utility model have advantages below and beneficial effect：
(1) described in the utility model pair of aerating system aeration effect significantly, fully oxidized can absorb SO2Sea
Water.
(2) described in the utility model pair of aerating system is without separately setting mixing pit, and aeration effect is good, has saved occupation of land
Area, reduces cost of investment and operating cost.
(3) described in the utility model pair of aerating system is practical, it is adaptable to all of sea water desulfuration aerating system, especially
It is applied to lack of space, the difficult Deuslfurizing system for sea water of aeration tank arrangement.
(4) described in the utility model pair of aerating system is used, it is gentle uniform that can flow the seawater in aeration tank
Stream, reduces impact damage of the current to aerator.
(5) described in the utility model pair of aerating system is used, the pH value of seawater is greatly improved, generation is greatly reduced
SO caused by seawater acid condition2Overflow, the secondary pollution for greatly avoiding therefore occurring.
Additionally, Deuslfurizing system for sea water described in the utility model equally has above-mentioned advantage and beneficial effect.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the Deuslfurizing system for sea water described in the utility model under implementation method.
Specific embodiment
Below by according to specific embodiment and Figure of description to the double exposures for sea water desulfuration described in the utility model
Gas system and Deuslfurizing system for sea water are described further, but following explanation is not constituted to the technical solution of the utility model
Improper restriction.
Fig. 1 shows a kind of structure of the Deuslfurizing system for sea water described in the utility model under implementation method.Additionally, Fig. 1
Also schematically illustrate the structure for double aerating systems of sea water desulfuration under a kind of implementation method described in the utility model.
As shown in figure 1, Deuslfurizing system for sea water includes absorption tower 1 and the double aerating systems for sea water desulfuration, wherein,
Described double aerating systems include the first aerating system and the second aerating system.First aerating system, it is included located at absorption
The first aerator 11 in tower 1, the first aerator 11 is connected with the first oxidation air pipeline 12, the first oxidation air pipeline
It is provided with the first oxidation fan 13；Second aerating system, its outside for being located at absorption tower 1, the second aerating system includes aeration tank
2, the second aerator 21 is provided with aeration tank 2, the second aerator 21 is connected with the second oxidation air pipeline 22, the second oxidation
Air duct is provided with the second oxidation fan 23.
During work, the seawater P1 formed in absorption tower is due to absorbing SO2And contain a large amount of unstable sulphite, because
This, the seawater P1 slant acidities formed in absorption tower, in order to avoid in acid condition, regenerating SO2, cause SO2Again overflow
Go out, therefore oxidizing gas is blasted by the first oxidation fan 13, oxidizing gas is aerated through the first oxidation air pipeline 12 first
A part of sulfite oxidation is sub- into sulfuric acid in the seawater P1 that will be formed in absorption tower in the presence of equipment 11, improves in absorption tower
The pH value of the seawater P1 of formation.
Then, the seawater P1 for being formed in absorption tower enters aeration tank 2 with the fresh seawater P2 of bypass from aeration tank arrival end,
And mixing seawater P3 is mixed to form in aeration tank 2.In the presence of the second aerator 21, mix seawater P3 and pass through second
There is aerated reaction in oxidizing gas that oxidation fan 23 is blasted, reach to go out from aeration tank after discharge standard in mixing seawater P3
Mouth end drains into sea.
With continued reference to Fig. 1, being provided with the first cofferdam 31 near aeration tank arrival end, the first cofferdam 31 is by part in aeration tank
It is the first space and second space, the seawater P1 formed in absorption tower is mixed with the fresh seawater P2 of bypass in the first space
Close, form mixing seawater P3.Mixing seawater P3 enters in second space through the first cofferdam 31, with the second aeration in second space
There is aerated reaction in the oxidizing gas in equipment 21.First cofferdam 31 not only has shape in blended absorbent tower under the present embodiment
Into the seawater P1 and fresh seawater P2 of bypass effect, but also with making the flow rate of water flow of mixing seawater P3 uniform gentle
Effect, so as to avoid because of the too urgent impact damage caused to equipment of seawater flow rate of water flow.Further, since the fresh seawater of bypass
P2 does not absorb SO2, thus natural alkalinity and substantial amounts of dissolved oxygen with seawater, so that in mixed process, in can aoxidizing
With the part sulphite in the seawater P1 formed in absorption tower.
Additionally, further ginseng depends on Fig. 1, the second cofferdam 32 is being provided near the aeration tank port of export, second space is being separated
It is the 3rd space and the 4th space, wherein, there is aerated reaction in the 3rd space in mixing seawater P3, after reaching discharge standard,
Enter the 4th space through the second cofferdam 32, the aeration tank port of export from the 4th space is emitted into sea.Second cofferdam 32 is at this
It is main under implementation method to play uniform gentle current, additionally, the setting in the second cofferdam 32 can expose mixing seawater P3
Increased resident time in gas pond 2, so as to increase aeration effect.
It should be noted that under some embodiments, those skilled in that art can according to actual needs by first
Distance of the cofferdam far from the arrival end of aeration tank is chosen in the range of 2.5-4m.
Additionally, under some embodiments, the distance for the second cofferdam far from the aeration tank port of export, technology in the art
Personnel can also be chosen in 2.5-4m scopes according to actual needs.
It should be noted that listed above is only specific embodiment of the utility model, it is clear that the utility model is not limited
In above example, there is the similar change of many therewith.If interior disclosed in those skilled in the art from the utility model
All deformations that appearance is directly derived or associated, all should belong to protection domain of the present utility model.
Claims (7)
1. a kind of double aerating systems for sea water desulfuration, it is characterised in that including：
First aerating system, it includes that, located at the first aerator in absorption tower, first aerator and the first oxidation are empty
Feed channel is connected, and the first oxidation air pipeline is provided with the first oxidation fan；
Second aerating system, its outside for being located at absorption tower, second aerating system includes aeration tank, is set in the aeration tank
There is the second aerator, second aerator is connected with the second oxidation air pipeline, on the second oxidation air pipeline
It is provided with the second oxidation fan；
Wherein, the first cofferdam is provided with the aeration tank, the first space and second space will be divided into inside aeration tank, it is described
First space is connected with the arrival end of aeration tank, and the second space is connected with the port of export of aeration tank, and second aeration sets
It is standby to be located in the second space.
2. aerating systems as claimed in claim 1 double, it is characterised in that first cofferdam is arranged in aeration tank relative leaning on
The position of nearly aeration tank arrival end.
3. aerating systems as claimed in claim 2 double, it is characterised in that first cofferdam far from the arrival end of aeration tank away from
From being 2.5-4m.
4. double aerating systems as described in any one in claim 1-3, it is characterised in that is additionally provided with the aeration tank
Two cofferdam, the 3rd space and the 4th space are divided into by second space, and the 4th space connects with the port of export of aeration tank,
Second aerator is in the 3rd space.
5. aerating systems as claimed in claim 4 double, it is characterised in that second cofferdam is arranged in aeration tank relative leaning on
The position of the nearly aeration tank port of export.
6. aerating systems as claimed in claim 5 double, it is characterised in that second cofferdam far from the port of export of aeration tank away from
From being 2.5-4m.
7. a kind of Deuslfurizing system for sea water, it includes absorption tower and the double aeration systems as described in any one in claim 1-6
System.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620825929.2U CN206232464U (en) | 2016-08-01 | 2016-08-01 | A kind of double aerating systems for sea water desulfuration |
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| CN201620825929.2U CN206232464U (en) | 2016-08-01 | 2016-08-01 | A kind of double aerating systems for sea water desulfuration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108218050A (en) * | 2018-03-23 | 2018-06-29 | 东方电气集团东方锅炉股份有限公司 | The quality recovery device and restoration methods of acid seawater after a kind of flue gas desulfurization with seawater |
-
2016
- 2016-08-01 CN CN201620825929.2U patent/CN206232464U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108218050A (en) * | 2018-03-23 | 2018-06-29 | 东方电气集团东方锅炉股份有限公司 | The quality recovery device and restoration methods of acid seawater after a kind of flue gas desulfurization with seawater |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |