CN207786279U - Coal-burning power plant aoxidizes magnesium fortified Deuslfurizing system for sea water - Google Patents
Coal-burning power plant aoxidizes magnesium fortified Deuslfurizing system for sea water Download PDFInfo
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- CN207786279U CN207786279U CN201820047716.0U CN201820047716U CN207786279U CN 207786279 U CN207786279 U CN 207786279U CN 201820047716 U CN201820047716 U CN 201820047716U CN 207786279 U CN207786279 U CN 207786279U
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- sea water
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- absorption tower
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The utility model discloses a kind of coal-burning power plants to aoxidize magnesium fortified Deuslfurizing system for sea water.The utility model includes air and gas system, absorption tower system, seawater aerating system and magnesia slurry system；The absorption tower system includes absorption tower and sea water circulating pump, and dish-style pallet, spray grid and demister are equipped with successively from smoke inlet to exhanst gas outlet in the absorption tower；The magnesia slurry system includes slurry feeding pump, and the slurry feeding pump is used to prepared magnesia slurry being transported to sea water circulating pump and spray in the pipeline between grid, latter same into spray grid with sea water mixing.Magnesia slurry is incorporated into seawater by the utility model, strengthen sea water desulfuration effect, the additive amount of magnesia is few, but greatly improves the efficiency of sea water desulfuration, so that Deuslfurizing system for sea water greatly improves the adaptability of coal, it is no longer limited in sulfur content≤1%, low-sulfur coal.
Description
Technical field
The utility model is related to Deuslfurizing system for sea water, specifically a kind of oxidation applied to coal-fired plant boiler flue gas
Magnesium fortified Deuslfurizing system for sea water.
Background technology
Energy resource structure of the China based on coal will not change within following very long a period of time, coal-fired plant boiler combustion
It burns and contains a large amount of SO in the flue gas generated2Equal acid contaminants, are the main reason for causing air pollution and acid rain.
Sea water desulfuration is mainly to absorb SO using the natural alkalinity of seawater2, small, the no waste of seawater desulfurizing process investment,
Simple for process, operation and maintenance are convenient, the problems such as there is no fouling and blocking.It is a kind of using sea water desulfuration for Coastal Power Plant
Selection economic, efficiently, environmentally friendly.
Although sea water desulfuration technology there are many advantages, find in actual application, natural sea-water normal ph model
Generally 7.8-8.3 is enclosed, is in alkalescent, salinity 3.5% has certain ionic strength, although this makes natural sea-water that can inhale
Receive SO2, but the absorptive capacity of natural sea-water is not too much big, therefore sea water desulfuration technology is suitable only for the desulfurization of middle low-sulfur coal,
And it is further stringent with discharge standard, the coal accommodation of sea water desulfuration technology will further reduce.In addition, season
The caused ocean temperature variation of section variation causes sea water desulfuration efficiency unstable.Thus, the desulfurization of existing sea water desulfuration technology
Efficiency is generally relatively low.
Utility model content
Technical problem to be solved in the utility model be overcome desulfuration efficiency existing for existing Deuslfurizing system for sea water it is relatively low,
The problems such as coal adaptability is poor is provided a kind of coal-burning power plant's oxidation magnesium fortified Deuslfurizing system for sea water, is made up using magnesia slurry
The problem of alkalinity of seawater deficiency, is only added a small amount of magnesia slurry, you can increases substantially the desulfurization effect of Deuslfurizing system for sea water
Rate so that Deuslfurizing system for sea water greatly improves the adaptability of coal, expands application range.
For this purpose, the utility model adopts the following technical scheme：Coal-burning power plant aoxidizes magnesium fortified Deuslfurizing system for sea water, including
Air and gas system, absorption tower system, seawater aerating system and magnesia slurry system；
The absorption tower system includes absorption tower and sea water circulating pump, in the absorption tower from smoke inlet to flue gas
Outlet is equipped with dish-style pallet, spray grid and demister successively；
The magnesia slurry system includes slurry feeding pump, and the slurry feeding pump is used for prepared oxidation
Magnesium slurries are transported to sea water circulating pump and spray in the pipeline between grid, latter same into spray grid with sea water mixing.
Seawater itself contains magnesium ion, and it is little on marine ecology influence to increase a small amount of magnesium ion in desulfurization seawater.Oxidation
Magnesium slurries by slurry feeding pump be injected into sea water circulating pump and spray grid between pipeline in, may make magnesia slurry with
Seawater is sufficiently mixed the utilization rate for being uniformly conducive to improve magnesia slurry, improves desulfuration efficiency.Dish-style support is equipped in absorption tower
Disk can play uniform smoke distribution；In addition, since pallet can keep certain height liquid film, flue gas is increased in absorption tower
Residence time keeps gas-liquid contact more abundant, effectively reduces liquid-gas ratio, improves the utilization rate of absorbent, to reduce sea
The flow and power consumption of water-circulating pump.
As the supplement of above-mentioned technical proposal, the air and gas system includes booster fan and chimney；The supercharging wind
Machine is transported to absorption tower for overcoming absorption tower and air and gas system resistance, by boiler smoke and removes SO2It is discharged into chimney again afterwards.
As the supplement of above-mentioned technical proposal, the air and gas system further includes gas baffle, seal fan and sealing air
Heater；The air and gas system be equipped with gas bypass, the gas baffle be respectively arranged on absorption tower original smoke inlet flue,
Neat stress exhaust pass and bypass flue；Gas baffle is equipped with sealing air, after sealing air is using the heating of sealed wind heater
Air, overcome air and gas system resistance using seal fan and generate additional pressure head, prevent smoke spillage.
As the supplement of above-mentioned technical proposal, the sealing air heater using electric heater, steam heater or its
His thermal medium heat exchanger.
As the supplement of above-mentioned technical proposal, the absorption tower system further includes cooling sea water pump, and the seawater is cold
But pump cools down to former flue gas for will be sprayed into the gas approach of absorption tower from the seawater that condenser exports；The spray
It drenches grid and is arranged one layer or two layers according to technological requirement, the demister is equipped with flushing water.
As the supplement of above-mentioned technical proposal, the seawater aerating system includes aeration tank, Aeration fan and aeration
Grid；
The aeration tank is divided into three regions, respectively forebay, aeration zone and mixed zone, is exported from condenser
Seawater initially enter aeration tank forebay, cooling sea water pump from forebay smoke sub-fraction seawater to absorption tower gas approach to former
Gas carries out spraying cooling, and the SO in flue gas is absorbed after a part of seawater of seawater circulation pumping to spray grid atomization2, absorb SO2
Seawater be collected to absorb the bottom of the tower, then drain into aeration tank aeration zone, aeration zone bottom of pond is equipped with grids for aeration, the aeration
Grid is connect with Aeration fan, and a large amount of fresh airs are provided by the Aeration fan, enters aeration zone through grids for aeration distribution
It is aerated；Seawater fully after aeration is mixed with the fresh seawater from forebay in mixed zone, and parameters meet after testing
Sea is discharged into after discharge standard.
As the supplement of above-mentioned technical proposal, the magnesia slurry system further includes slurry commanding tank and blender, described
Slurry commanding tank be equipped with magnesia feed inlet and low-pressure steam inlet, the blender is located in slurry commanding tank.
The utility model has advantageous effect below：A small amount of magnesia slurry is added, you can increase substantially seawater
The desulfuration efficiency of desulphurization system so that Deuslfurizing system for sea water greatly improves the adaptability of coal, expands application range.Desulfurization sea
It is little on marine ecology influence to increase a small amount of magnesium ion in water.Magnesia slurry is injected into seawater circulation by slurry feeding pump
In pipeline between pump and spray grid, magnesia slurry may make to be sufficiently mixed uniformly with seawater, is conducive to improve magnesia
The utilization rate of slurries improves desulfuration efficiency.It is equipped with one layer of dish-style pallet in absorption tower, uniform smoke distribution can be played；In addition, by
It can keep certain height liquid film in pallet, increase residence time of the flue gas in absorption tower, keep gas-liquid contact more abundant, have
Effect reduces liquid-gas ratio, the utilization rate of absorbent is improved, to reduce the flow and power consumption of sea water circulating pump.
Description of the drawings
Fig. 1 is the process flow diagram of the utility model；
Wherein：1 is absorption tower；2 be aeration tank；3 be slurry commanding tank；4 be booster fan；5 be chimney；6 be cooling sea water pump；
7 be dish-style pallet；8 be spray grid；9 be demister；10 be sea water circulating pump；11 be Aeration fan；12 be grids for aeration；13
For slurry feeding pump；14 be blender；15 be seal fan；16 be sealing air heater；17 be gas baffle.
Specific implementation mode
A preferred forms of the utility model are provided with reference to the accompanying drawings of the specification.
A kind of coal-burning power plant as shown in Figure 1 aoxidizes magnesium fortified Deuslfurizing system for sea water, by air and gas system, absorption tower system,
Seawater aerating system and magnesia slurry system composition.
The air and gas system include booster fan 4, gas baffle 17, seal fan 15, sealing air heater 16 and
Chimney 5.Boiler smoke is transported to absorption tower 1 by the booster fan 4 for overcoming absorption tower 1 and air and gas system resistance
Remove SO2It is discharged into chimney 5 again afterwards.Air and gas system is equipped with gas bypass, and the gas baffle 17 is respectively arranged on absorption tower original cigarette
Gas gas approach, neat stress exhaust pass and bypass flue.Gas baffle 17 is equipped with sealing air, and sealing air uses sealed wind
Air after the heating of heater 16, overcomes flue gas system resistance using seal fan 15 and generates additional pressure head, prevent flue gas from letting out
Leakage.Electric heater or steam heater or other thermal medium heat exchangers can be used in the sealing air heater 16.
The absorption tower system includes cooling sea water pump 6, absorption tower 1 and sea water circulating pump 10.The seawater is cold
But pump 6 cools down to former flue gas for will be sprayed into 1 gas approach of absorption tower from the seawater that condenser exports；Described
It is equipped with dish-style pallet 7, spray grid 8 and demister 9 in absorption tower 1 successively from smoke inlet to exhanst gas outlet.Spray grid 8
It is arranged one layer or two layers according to technological requirement, the demister 9 is equipped with flushing water.The sea water circulating pump 10 exposes seawater
The seawater that gas pond forebay is exported from condenser is delivered to the spray grid 8 being arranged in absorption tower 1, in Absorption by Sea Water flue gas
SO2Afterwards, it is discharged into seawater aeration tank 2.
The aerating system includes aeration tank 2, Aeration fan 11 and grids for aeration 12.Divide the aeration tank 2
At three regions, respectively forebay 2A, aeration zone 2B and mixed zone 2C.Seawater from condenser outlet initially enters aeration
Pond forebay 2A, cooling sea water pump 6 take out sub-fraction seawater from forebay 2A and carry out spray drop to former flue gas to 1 gas approach of absorption tower
Temperature, sea water circulating pump 10 take out a part of seawater to the spray grid 8 in absorption tower 1, the SO in flue gas are absorbed after atomization2, inhale
Receive SO2Seawater be collected to 1 bottom of absorption tower, then drain into aeration tank aeration zone 2B, aeration zone bottom of pond is equipped with grids for aeration 12,
The grids for aeration 12 is connect with Aeration fan 11, and a large amount of fresh airs are provided by the Aeration fan 11, through being aerated lattice
The distribution of grid 12 is aerated into aeration zone 2B.Seawater fully after aeration is with the fresh seawater from forebay 2A in mixed zone 2C
Mixing, parameters are discharged into sea after meeting discharge standard after testing.
The magnesia slurry system includes slurry commanding tank 3, blender 14 and slurry feeding pump 13.The slurry commanding tank 3
Equipped with magnesia feed inlet and low-pressure steam inlet.The blender 14 is arranged in slurry commanding tank.The slurries conveying
Prepared magnesia slurry is transported to sea water circulating pump 10 and sprayed in the pipeline between grid 8 by pump 13.
It is additionally provided with corresponding shut-off valve, gate valve, ball valve, non-return on each pipeline of the magnesium fortified Deuslfurizing system for sea water of oxidation
The control valves such as valve, drain valve and regulating valve and valve group.
It is additionally provided with corresponding thermometer, pressure gauge, safety in each equipment in the magnesium fortified Deuslfurizing system for sea water of oxidation
The monitoring instruments such as valve, liquid level gauge and flowmeter instrument and equipment.
The course of work of the utility model is as follows：
Coal-fired boiler in power plant flue gas is sent through booster fan 4 to absorption tower 1, is cooled down by seawater in 1 gas approach of absorption tower
Pump 6 takes out sub-fraction seawater from aeration tank forebay 2A and to flue gas tentatively cool down, and then flue gas enters in tower and flows vertically upward
Dynamic, after dish-style pallet 7, smoke distribution is more uniform.On the other hand the seawater from condenser enters aeration tank forebay 2A,
It is beaten to the spray grid 8 being located in absorption tower 1 by sea water circulating pump 10.The magnesia slurry for being simultaneously from slurry commanding tank 3 passes through
Slurries pump 13 is injected into sea water circulating pump 10 and sprays the pipeline between grid 8, enters together after evenly mixing with seawater and sprays
Grid 8.The seawater for being mixed with magnesia slurry covers entire tower body section after atomization and flows downward, it is vertical with tower body is entered to
The flue gas of upper flowing comes into full contact with reaction, the SO in Absorption by Sea Water flue gas2.Dish-style pallet can be kept during seawater spraying
The liquid film of certain altitude increases residence time of the flue gas in absorption tower, keeps gas-liquid contact more abundant, improves Absorption by Sea Water
SO2Efficiency.Flue gas eliminates most SO after the reaction of the contact with sea water of mixed oxidization magnesium2, then through demister 9 except defogging
Drop is discharged from 1 top discharge of absorption tower into chimney 5.Absorb SO2Seawater be discharged into aeration tank aeration zone from absorb the bottom of the tower
2B, meanwhile, a large amount of fresh air is sent into grids for aeration 12 by Aeration fan 11, and suction is blasted after grids for aeration 12 evenly distributes
SO is received2Seawater in, fully aeration after with the fresh seawater from aeration tank forebay 2A after mixing pit 2C is mixed, after testing
Parameters are discharged into sea after meeting discharge standard.
As described above, although the utility model has been indicated and expressed with reference to specific preferred embodiment, it must not
It is construed to the limitation to the utility model itself.In the spirit and model for not departing from the utility model that the appended claims define
It, can various changes can be made in the form and details to it under the premise of enclosing.
Claims (7)
1. coal-burning power plant aoxidizes magnesium fortified Deuslfurizing system for sea water, including air and gas system, absorption tower system and seawater aerating system,
It is characterized in that, further includes magnesia slurry system；
The absorption tower system includes absorption tower (1) and sea water circulating pump (10), in the absorption tower from smoke inlet to
Exhanst gas outlet is equipped with dish-style pallet (7), spray grid (8) and demister (9) successively；
The magnesia slurry system includes slurry feeding pump (13), and the slurry feeding pump (13) is used for will be prepared
Magnesia slurry is transported to sea water circulating pump (10) and sprays in the pipeline between grid (8), latter with entrance with sea water mixing
Spray grid (8).
2. coal-burning power plant according to claim 1 aoxidizes magnesium fortified Deuslfurizing system for sea water, which is characterized in that the cigarette wind
System includes booster fan (4) and chimney (5)；
For overcoming absorption tower and air and gas system resistance, boiler smoke is transported to absorption tower to be taken off the booster fan (4)
Except SO2It is discharged into chimney (5) again afterwards.
3. coal-burning power plant according to claim 2 aoxidizes magnesium fortified Deuslfurizing system for sea water, which is characterized in that the cigarette wind
System further includes gas baffle (17), seal fan (15) and sealing air heater (16)；
The air and gas system is equipped with gas bypass, and the gas baffle (17) is respectively arranged on absorption tower original smoke inlet cigarette
Road, neat stress exhaust pass and bypass flue；Gas baffle (17) is equipped with sealing air, and sealing air uses sealed wind heater
(16) air after heating, overcomes air and gas system resistance using seal fan (15) and generates additional pressure head, prevent smoke spillage.
4. coal-burning power plant according to claim 3 aoxidizes magnesium fortified Deuslfurizing system for sea water, which is characterized in that the sealing
Wind heater (16) uses electric heater or steam heater.
5. coal-burning power plant according to claim 1 aoxidizes magnesium fortified Deuslfurizing system for sea water, which is characterized in that the absorption
Tower System further includes cooling sea water pump (6),
The cooling sea water pump (6) from the seawater that condenser exports for will spray into the gas approach of absorption tower, to former cigarette
Gas cools down；The spray grid (8) is arranged one layer or two layers according to technological requirement, and the demister (9) is equipped with punching
Wash water.
6. coal-burning power plant according to claim 5 aoxidizes magnesium fortified Deuslfurizing system for sea water, which is characterized in that the seawater
Aerating system includes aeration tank (2), Aeration fan (11) and grids for aeration (12)；
The aeration tank is divided into three regions, respectively forebay (2A), aeration zone (2B) and mixed zone (2C), carrys out self-solidifying
The seawater of vapour device outlet initially enters aeration tank forebay (2A), and cooling sea water pump (6) takes out sub-fraction seawater to absorption from forebay
Tower gas approach carries out spraying cooling to former flue gas, and sea water circulating pump (10) absorbs after taking out a part of seawater to spray grid atomization
SO in flue gas2, absorb SO2Seawater be collected to absorb the bottom of the tower, then drain into aeration tank aeration zone (2B), aeration zone pond
Bottom is equipped with grids for aeration, and the grids for aeration is connect with Aeration fan, and a large amount of fresh airs are provided by the Aeration fan,
It distributes into aeration zone (2B) and is aerated through grids for aeration；Seawater fully after aeration is with the fresh seawater from forebay mixed
Close area (2C) mixing.
7. coal-burning power plant according to claim 1 aoxidizes magnesium fortified Deuslfurizing system for sea water, which is characterized in that the oxidation
Magnesium slurries system further includes slurry commanding tank (3) and blender (14), and the slurry commanding tank is equipped with magnesia feed inlet and low pressure is steamed
Vapour entrance, the blender are located in slurry commanding tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820047716.0U CN207786279U (en) | 2018-01-11 | 2018-01-11 | Coal-burning power plant aoxidizes magnesium fortified Deuslfurizing system for sea water |
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| CN201820047716.0U CN207786279U (en) | 2018-01-11 | 2018-01-11 | Coal-burning power plant aoxidizes magnesium fortified Deuslfurizing system for sea water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675424A (en) * | 2018-11-23 | 2019-04-26 | 宜宾海丰和锐有限公司 | The method and system of reducing substances in carbide slag slurry are removed in carbide slag sulfur removal technology |
-
2018
- 2018-01-11 CN CN201820047716.0U patent/CN207786279U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675424A (en) * | 2018-11-23 | 2019-04-26 | 宜宾海丰和锐有限公司 | The method and system of reducing substances in carbide slag slurry are removed in carbide slag sulfur removal technology |
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