CN207734827U - A kind of Deuslfurizing system for sea water - Google Patents
A kind of Deuslfurizing system for sea water Download PDFInfo
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- CN207734827U CN207734827U CN201721783841.XU CN201721783841U CN207734827U CN 207734827 U CN207734827 U CN 207734827U CN 201721783841 U CN201721783841 U CN 201721783841U CN 207734827 U CN207734827 U CN 207734827U
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Abstract
The utility model discloses a kind of Deuslfurizing system for sea water.It includes seawater supply system, SO2Absorption system, restoring sea water system, SO2Absorption system includes lime milk dosing system and absorption tower spray system；Lime milk dosing system includes milk of lime storage tank, lime milk dosing pump and lime milk dosing pipeline；Lime milk dosing pump is connected to by lime milk dosing pipeline one end on milk of lime storage tank, and the lime milk dosing pipeline other end is connected on the corresponding seawater boosting pipeline of highest layer absorption tower spraying layer；A branch for being connected to the corresponding seawater boosting pipeline of secondary high layer absorption tower spraying layer is arranged in lime milk dosing pipeline；Seawater supply system includes siphonic water-collecting well, priming reservoir, and siphonic water-collecting well setting is tightly attached in priming reservoir；There are connecting line both ends to be separately connected the mixing pit of seawater supply system and restoring sea water system；Restoring sea water system is made of oxidation trough and aerating system.Have the advantages that desulfuration efficiency is higher, energy consumption is relatively low, operating cost is relatively low.
Description
Technical field
The utility model is related to a kind of Deuslfurizing system for sea water, more particularly to a kind of sea water desulfuration works suitable for minimum discharge
Process system.
Background technology
Currently, the acid rain that the sulfur dioxide of power plant emission is formed has seriously endangered the living environment of the mankind, state compulsion
It is required that flue gas desulfurization device is installed by thermal power plant.Sulfur removal technology used by coal-burning power plant is varied in the world, and wherein seawater is de-
Sulphur is simple for process, operating cost is low, does not generate any liquid and solid-state castoff, by the sea in Thermal Power Plant Construction, has very strong
Attraction.And the thermal power plant standard limit of smog release of the newest promulgation of country, to SO2Concentration of emission proposes stringenter
It is required that.With to SO2The raising that removal efficiency requires, traditional seawater desulfurizing process system are not well positioned to meet existing want
It asks.
The problem of needing to cause seawater pH value to fluctuate with factors such as tide, precipitation in face of seawater due to sea water desulfuration, if
Timing generally requires to consider larger spray amount of redundancy.Therefore desulfuration efficiency is improved by increasing spray flux merely, can caused
The problems such as system effectiveness is low, and cost of investment is big, and operation energy consumption is high.
Therefore, it is necessary to develop a kind of novel seawater desulfurizing process system, desulfuration efficiency can be improved, moreover it is possible to reduce operation
Cost, and small, short time limit, low power consumption and other advantages with investment.
Invention content
The purpose of this utility model is to provide a kind of Deuslfurizing system for sea water, and desulfuration efficiency is higher, cost of investment is relatively low, operation
Cost is relatively low, the duration is shorter, energy consumption is relatively low.
To achieve the goals above, the technical solution of the utility model is：A kind of Deuslfurizing system for sea water, including seawater supply
System, SO2Absorption system, restoring sea water system, it is characterised in that：SO2Absorption system includes lime milk dosing system and absorption
Tower spray system；Lime milk dosing system includes milk of lime storage tank, lime milk dosing pump and lime milk dosing pipeline；Milk of lime
Dosing pump is connected to by lime milk dosing pipeline one end on milk of lime storage tank, and the lime milk dosing pipeline other end is connected to highest
On the corresponding seawater boosting pipeline of layer absorption tower spraying layer；Lime milk dosing pipeline is arranged one and is connected to time high layer absorption tower spray
The branch of the corresponding seawater boosting pipeline of drenching layer；
Absorption tower slurry spraying system includes seawater pond, sea water booster pump, spraying layer and seawater boosting pipeline；Absorption tower
For material filling type countercurrent absorber, it is internally provided with packing layer, spraying layer, demister；Demister is set to absorption tower exit, spray
Layer is located at below demister, and packing layer is located at below spraying layer and above smoke inlet；Seawater pond is located under absorption tower
Portion, sea water booster pump are set near siphonic water-collecting well, and every sea water booster pump is correspondingly connected with a spray by seawater boosting pipeline
Layer；Every sea water booster pump is correspondingly connected to by seawater boosting pipeline in seawater supply system；There is the setting of seawater discharge pipeline
In absorption tower lower part, seawater discharge lower end of duct is connect with the mixing pit of restoring sea water system；
Seawater supply system includes siphonic water-collecting well, priming reservoir, and siphonic water-collecting well setting is tightly attached in priming reservoir；There are connecting line both ends point
Not Lian Jie seawater supply system and restoring sea water system mixing pit；
Restoring sea water system is made of oxidation trough and aerating system；Oxidation trough includes mixing pit, aeration tank and blowoff basin；It exposes
Gas system includes Aeration fan, air distribution, nozzle；Mixing pit outlet connection aeration tank entrance, aeration tank outlet connection row
Basin inlet, blowoff basin outlet connection gutter, gutter connects sea；Aeration fan passes through ventilation shaft and air distribution
It connects, nozzle is set on air distribution, air distribution and nozzle are respectively positioned in aeration tank.
In the above-mentioned technical solutions, lime milk dosing pump configures one or more.
In the above-mentioned technical solutions, lime milk dosing pump is variable frequency pump or general pump.
In the above-mentioned technical solutions, lime milk dosing piping connection to sea water booster pump entrance pipe or is connected to seawater liter
Press pump export pipeline.
In the above-mentioned technical solutions, it is provided with rinse-system in demister.
In the above-mentioned technical solutions, it boosts in pipeline and absorption tower lower marine water discharge spout road into the seawater before absorption tower
It is both provided with rubber liner.
In the above-mentioned technical solutions, it is provided with aerating system at oxidation trough.
The utility model has the following advantages that：
(1) by geographical distribution, the pH value of the influence of the factors such as seasonal climate, seawater would generally be in this model of 7.5-8.5
Enclose interior fluctuation；Since the amplitude of fluctuation is larger, the effect of desulfurization can be affected greatly；Therefore need to improve seawater in low pH
Desulfuration efficiency when value；The utility model increases pH regulating systems, and prepared milk of lime is pumped by lime milk dosing, injects
In the corresponding serum recycle pipeline of spraying layer of top layer, the slurry pH value in the serum recycle pipeline of top layer is made substantially to carry
It is high；Due to having already passed through the spray of lower section spraying layer, contained SO by the flue gas of top layer spraying layer2Concentration it is very low, and
For the seawater pH value come from condenser usually between 7~8, this weaker environment is unfavorable for SO of the seawater to low concentration in flue gas2
Absorption, therefore the pH value for improving seawater in top layer spraying layer can greatly improve overall desulfurization efficiency；Sea can be successfully managed
The influence that water pH value brings desulfuration efficiency with environmental change；
(2) under the premise of same spray flux, the application is higher than existing seawater desulfurizing process system desulfuration efficiency, desulfurization
Efficiency can be more than 99.9%, and the desulfuration efficiency of the prior art is 90~95%；Under the premise of same desulfuration efficiency, existing seawater
The problems such as desulfurizing technology system is bigger than the application spray flux, and system effectiveness can be caused low, and cost of investment is big, and operation energy consumption is high；And
This seawater desulfurizing process system investment cost is relatively low, and operating cost is relatively low, and energy consumption is relatively low.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
The absorption towers 1- in figure, 2- seawater pond, 3- sea water booster pumps, 4- spraying layers, 5- demisters, 6- packing layers, 7- seawater
Supply system, 8- restoring sea water systems, 9- aerating systems, 10- milk of lime storage tanks, 11- lime milk dosings pump, 12- milk of limes add
Pencil road.
In Fig. 1, hollow arrow indicates flow of flue gas direction；
The arrow of restoring sea water system lower end indicates to be discharged into sea after the seawater discharge restored is up to standard；
The arrow of seawater supply system upper end is discharged into seawater supply system after indicating seawater condenser.
Specific implementation mode
The performance that according to the present invention will be described in detail below with reference to the accompanying drawings, but they are not constituted to the utility model
It limits, it is only for example.The advantages of making the utility model by explanation simultaneously, is more clear and is readily appreciated that.
Refering to known to attached drawing：A kind of Deuslfurizing system for sea water, including seawater supply system 7, SO2Absorption system, restoring sea water
System 8, SO2Absorption system includes lime milk dosing system and absorption tower spray system；Lime milk dosing system includes lime
Newborn storage tank 10, lime milk dosing pump 11 and lime milk dosing pipeline 12；Lime milk dosing pump 11 passes through lime milk dosing pipeline
12 one end are connected on milk of lime storage tank 10, and 12 other end of lime milk dosing pipeline is connected to highest layer absorption tower spraying layer correspondence
Seawater boosting pipeline on, lime milk dosing pump by the milk of lime in milk of lime storage tank by lime milk dosing Pipeline transport to most
The corresponding seawater of high layer absorption tower spraying layer boosts pipeline；As spare, lime milk dosing pipeline 12 is arranged one and is connected to time
Milk of lime is delivered to time high layer absorption tower spraying layer and corresponded to by the branch of the corresponding seawater boosting pipeline of high layer absorption tower spraying layer
Seawater boost pipeline；When the corresponding booster of top spraying layer need to overhaul or other reasons, top spraying layer do not enable
When, then adding for milk of lime is carried out by the dosing pipe of secondary high level；
Absorption tower slurry spraying system includes seawater pond 2, sea water booster pump 3, spraying layer 4 and seawater boosting pipeline；It inhales
Receipts tower 1 is material filling type countercurrent absorber, is internally provided with packing layer 6, spraying layer 4, demister 5；Demister 5 is set to absorption tower 1
Exit, demister prevent a large amount of drops to be discharged from chimney of electric plant for collecting the droplet carried in flue gas；Spraying layer 4
Positioned at 5 lower section of demister, packing layer 6 is located at 4 lower section of spraying layer and above smoke inlet；Seawater pond 2 is located at absorption tower 1
Lower part, sea water booster pump 3 are set near siphonic water-collecting well, and every sea water booster pump 3 is correspondingly connected with one by seawater boosting pipeline
Spraying layer 4；Every sea water booster pump 3 is correspondingly connected to by seawater boosting pipeline in seawater supply system 7；There is seawater discharge pipe
Road is set to 1 lower part of absorption tower, and seawater discharge lower end of duct is connect with the mixing pit of restoring sea water system 8；
Seawater supply system 7 includes siphonic water-collecting well, priming reservoir, and siphonic water-collecting well setting is tightly attached in priming reservoir；There are connecting line both ends
It is separately connected the mixing pit of seawater supply system 7 and restoring sea water system 8；
Restoring sea water system 8 is made of oxidation trough and aerating system 9；Oxidation trough includes mixing pit, aeration tank and blowoff basin；
Aerating system 9 includes Aeration fan, air distribution, nozzle；Mixing pit outlet connection aeration tank entrance, aeration tank outlet connection
Blowoff basin entrance, blowoff basin outlet connection gutter, gutter connects sea；Aeration fan is distributed by ventilation shaft and air
Pipe connects, and nozzle is arranged on air distribution, air distribution and nozzle are respectively positioned in aeration tank.11 configuration of lime milk dosing pump
One or more is spare.Lime milk dosing pump 11 is variable frequency pump or general pump, and sulfur content or boiler load in former flue gas become
When change, the frequency converter that can be pumped by adjusting lime milk dosing adjusts the milk of lime total amount of addition.Lime milk dosing pipeline 12 connects
To 3 entrance pipe of sea water booster pump or it is connected to 3 export pipeline of sea water booster pump, under normal circumstances, lime milk dosing pipeline connects
It is connected to sea water booster pump entrance pipe, operating pressure herein is relatively low, and can be by sea water booster pump, more after milk of lime addition
Added with the mixing conducive to milk of lime and seawater；When being not easy to be connected to sea water booster pump entrance pipe in certain detailed programs,
Also it can be connected to sea water booster pump export pipeline.It is provided with rinse-system in demister 5, demister is rinsed, prevents from removing
Day with fog blocks.Into before absorption tower 1 seawater boosting pipeline and 1 lower marine water discharge spout road of absorption tower in be both provided in rubber
Serve as a contrast anti-corrosion.Aerating system 9 is provided at oxidation trough.
A kind of course of work of Deuslfurizing system for sea water described in the utility model is as follows：
1 bottom of flue gas self-absorption tower enters, flows up through packing layer 6, is contacted in a counter-current configuration with seawater in packing layer 6；
1 top spraying layer 4 of seawater self-absorption tower introduces, and sea water booster pump 3 is that absorption tower 1 provides the fresh seawater of big flow as desulfurization
Absorbent can come into full contact with by the seawater of packing layer 6 with flue gas, and absorbing reaction is carried out in tower, remove the SO in flue gas2,
It washs the seawater after flue gas and passes through the downflow weir discharge positioned at 1 lower part of absorption tower and above seawater pond 2, inflow oxidation trough
Mixing pit；The demister 5 of 1 exit of absorption tower setting removes the droplet carried in flue gas after desulfurization；
Milk of lime (the Ca (OH) configured is stored in milk of lime storage tank 102) solution, lime milk dosing pump 11 is by lime
Milk of lime in newborn storage tank 10 is delivered to the corresponding seawater of 1 spraying layer of highest layer absorption tower by lime milk dosing pipeline 12 and boosts
Pipeline；As spare, a branch is arranged in lime milk dosing pipeline 12, and milk of lime is delivered to time high layer absorption tower spraying layer pair
The seawater boosting pipeline answered；When the corresponding booster of top spraying layer need to overhaul or other reasons, top spraying layer do not open
Used time then carries out adding for milk of lime by the dosing pipe of secondary high level；Under normal circumstances, lime milk dosing pipeline 12 is connected to
3 entrance pipe of sea water booster pump, operating pressure herein is relatively low, and can be by sea water booster pump 3, more after milk of lime addition
Be conducive to the mixing of milk of lime and seawater；When being not easy to be connected to 3 entrance pipe of sea water booster pump in certain detailed programs, also
It can be connected to 3 export pipeline of sea water booster pump；When sulfur content or boiler load in former flue gas change, by adjusting milk of lime
The frequency converter of dosing pump 11 adjusts the milk of lime total amount of addition；
Seawater as absorbent drains after being derived from plant condenser, and by being picked out after siphonic water-collecting well, nearby sea is arranged in siphonic water-collecting well
Water booster 3, every sea water booster pump 3 correspond to a spraying layer 4；Seawater by being close to the priming reservoir of siphonic water-collecting well, through seawater liter
Press pump 3 enters absorption tower 1 by seawater boosting pipeline；Seawater after desulfurization is discharged by underground underdrain in oxidation trough；Desulfurization absorbs
The seawater (the downflow weir discharge through 1 lower part of absorption tower) crossed enters the mixing chamber of seawater oxidation trough through pipeline self；
Seawater from siphonic water-collecting well is mixed with the seawater after desulfurization in the mixing pit of restoring sea water system 8, then
Into aeration tank, air is blasted aeration tank by Aeration fan by air distribution and nozzle, and bubble fine crushing makes in aeration tank
Seawater dissolved oxygen reaches saturation, and by sulfite oxidation at sulfate, while making carbanion shape in seawater by aeration
At bicarbonate ion and carbon dioxide is released, is discharged into greatly through gutter by blowoff basin after so that seawater discharge is restored up to standard
Sea.
Other unaccounted parts belong to the prior art.
Claims (7)
1. a kind of Deuslfurizing system for sea water, including seawater supply system (7), SO2Absorption system, restoring sea water system (8), feature
It is：SO2Absorption system includes lime milk dosing system and absorption tower spray system；Lime milk dosing system includes milk of lime
Storage tank (10), lime milk dosing pump (11) and lime milk dosing pipeline (12)；Lime milk dosing pump (11) is added by milk of lime
Pencil road (12) one end is connected on milk of lime storage tank (10), and lime milk dosing pipeline (12) other end is connected to top absorption
On the corresponding seawater boosting pipeline of tower spraying layer；Lime milk dosing pipeline (12) is arranged one and is connected to time high layer absorption tower spray
The branch of the corresponding seawater boosting pipeline of layer；
Absorption tower slurry spraying system includes seawater pond (2), sea water booster pump (3), spraying layer (4) and seawater boosting pipeline；
Absorption tower (1) is material filling type countercurrent absorber, is internally provided with packing layer (6), spraying layer (4), demister (5)；Demister (5) is set
Be placed in absorption tower (1) exit, spraying layer (4) is located at below demister (5), packing layer (6) be located at spraying layer (4) lower section and
Above smoke inlet；Seawater pond (2) is located at absorption tower (1) lower part, and sea water booster pump (3) is set near siphonic water-collecting well, often
Platform sea water booster pump (3) is correspondingly connected with a spraying layer (4) by seawater boosting pipeline；Every sea water booster pump (3) passes through sea
Water boosting pipeline is correspondingly connected in seawater supply system (7)；There is seawater discharge pipeline to be set to absorption tower (1) lower part, seawater
Discharge tube lower end is connect with the mixing pit of restoring sea water system (8)；
Seawater supply system (7) includes siphonic water-collecting well, priming reservoir, and siphonic water-collecting well setting is tightly attached in priming reservoir；There are connecting line both ends point
Not Lian Jie seawater supply system (7) and restoring sea water system (8) mixing pit；
Restoring sea water system (8) is made of oxidation trough and aerating system (9)；Oxidation trough includes mixing pit, aeration tank and blowoff basin；
Aerating system (9) includes Aeration fan, air distribution, nozzle；Mixing pit outlet connection aeration tank entrance, aeration tank outlet connect
Run in basin inlet, and blowoff basin outlet connection gutter, gutter connects sea；Aeration fan passes through ventilation shaft and air point
Piping connects, and nozzle is arranged on air distribution, air distribution and nozzle are respectively positioned in aeration tank.
2. a kind of Deuslfurizing system for sea water according to claim 1, it is characterised in that：Lime milk dosing pumps (11) and configures one
Or more.
3. a kind of Deuslfurizing system for sea water according to claim 1 or 2, it is characterised in that：It is to become that lime milk dosing, which pumps (11),
Frequency pump or general pump.
4. a kind of Deuslfurizing system for sea water according to claim 3, it is characterised in that：Lime milk dosing pipeline (12) is connected to
Sea water booster pump (3) entrance pipe is connected to sea water booster pump (3) export pipeline.
5. a kind of Deuslfurizing system for sea water according to claim 4, it is characterised in that：Flushing system is provided in demister (5)
System.
6. a kind of Deuslfurizing system for sea water according to claim 5, it is characterised in that：Seawater liter into before absorption tower (1)
It is both provided with rubber liner in pressure pipeline and absorption tower (1) lower marine water discharge spout road.
7. a kind of Deuslfurizing system for sea water according to claim 6, it is characterised in that：Aerating system is provided at oxidation trough
(9)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721783841.XU CN207734827U (en) | 2017-12-19 | 2017-12-19 | A kind of Deuslfurizing system for sea water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721783841.XU CN207734827U (en) | 2017-12-19 | 2017-12-19 | A kind of Deuslfurizing system for sea water |
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| Publication Number | Publication Date |
|---|---|
| CN207734827U true CN207734827U (en) | 2018-08-17 |
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ID=63118495
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721783841.XU Active CN207734827U (en) | 2017-12-19 | 2017-12-19 | A kind of Deuslfurizing system for sea water |
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| Country | Link |
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| CN (1) | CN207734827U (en) |
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2017
- 2017-12-19 CN CN201721783841.XU patent/CN207734827U/en active Active
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