CN207271051U - A kind of high solid-gas ratio dehumidification desulfurization general character system based on micro mist lime stone - Google Patents
A kind of high solid-gas ratio dehumidification desulfurization general character system based on micro mist lime stone Download PDFInfo
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- CN207271051U CN207271051U CN201720824833.9U CN201720824833U CN207271051U CN 207271051 U CN207271051 U CN 207271051U CN 201720824833 U CN201720824833 U CN 201720824833U CN 207271051 U CN207271051 U CN 207271051U
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Abstract
A kind of high solid-gas ratio dehumidification desulfurization general character system based on micro mist lime stone of the utility model, the buffered storehouse of micro mist lime stone, metering system enters humidification mixing system, there are atomized water and circulation desulfurization ash into batch mixing humidification system at the same time, micro mist lime stone is fully humidified in humidification mixing system, activation, homogenizing, improve desulphurization reaction activity, fluidize and convey through fluid-bed, material is dispersed throughout into high solid-gas ratio reactor at the same time for conveying, make random turbulent motion with heat smoke in reactor, the free humidification water in micro mist lime stone is evaporated by obvious heat of smoke during the motion, micro mist limestone particle surface gradually forms the preferable temperature of desulphurization reaction and damp condition, SO in flue gas2Generation desulfurated plaster is reacted with particulate lime stone, flue gas is discharged into air after purification；The utility model smoke desulfurization efficiency >=95%, and reduced investment, waste water zero produce, and flue gas hydrofuge is small, and desulfurated plaster moisture content≤3% is, it can be achieved that solid wastes recycling efficiently uses.
Description
Technical field
The utility model belongs to flue gas desulfurization technique field, and more particularly to a kind of high solid-gas ratio based on micro mist lime stone subtracts
Wet desulfurization general character system.
Background technology
SO2A large amount of discharges greatly harm can be produced to environment and the mankind, present China be to be only second to Europe and North America
The third-largest Acid Rain Zone, acid rain area constitutes about the 30% of land resources.
As environmental problem is more and more prominent in the world, countries in the world also increase the power of environmental improvement one after another
Degree.Flue gas desulfurization technique (FGD)-wet desulphurization is current control SO2Most common technology and method.
Although such desulfurization technology desulfuration efficiency is higher, the following defect of generally existing：(1) in terms of environmental protection effect：Wet method
The secondary pollutions such as desulfidation tail gas temperature is low, humidity is high and the remaining duff of carrying is grey, newly-generated sulphate particle, there is expert
Research shows that such material is discharged into air and easily forms aerosol so as to aggravate city haze；(2) in terms of technology：Wet method takes off
Sulphur technology generally existing serum producing system is complicated, absorbs nozzle for liquid and easily blocks, wears, the easy fouling in absorption tower, is also easy to produce desulfurization
The drawbacks of waste water；(3) in terms of solid wastes recycling：The desulfurated plaster of wet desulphurization generation, after press filtration moisture content still 10~
15% or so, limit its potentiality as large solid waste utilization of resources；(4) investment and operating cost aspect：Existing wet method takes off
The shortcomings that sulphur technology generally existing takes up a large area, initial investment and operation and maintenance cost are high.
The content of the invention
The shortcomings that in order to overcome the above-mentioned prior art, the purpose of this utility model is to provide one kind to be based on micro mist lime stone
High solid-gas ratio dehumidification desulfurization general character system, using micro mist lime stone as desulfurizing agent, by being humidified, activating, the pre- place such as being homogenized
Reason increases substantially reactivity, can be issued to the smoke desulfurization efficiency (>=98%) that is equal with wet method, desulfurization in dehumidification condition
Waste water zero has the characteristics that tail end humidity of flue gas is low while generation, can effectively avoid wet flue gas and city haze formation is born
Face acts on, desulfurated plaster ratio >=90%, moisture content≤2% in waste residue, can be led directly as high-performance reclaimed gypsum in building materials
Realize extensive recycling in domain.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of high solid-gas ratio dehumidification desulfurization general character method based on micro mist lime stone, includes the following steps：
The first step：Micro mist lime stone is stored in material buffer warehouse；
Second step：Material buffer warehouse divides into metering system, and micro mist lime stone is measured, and batch mixing is entered after metering and is humidified
System, while enter the also circulation desulfurization ash and humidification water of batch mixing humidification system, in batch mixing humidification system, material is fully mixed
Close and be humidified；
3rd step：Humidification blended stock enters high solid-gas ratio reactor after fluid-bed fully fluidizes；
4th step：Material and smoke components mixing in high solid-gas ratio reactor, moisture is under heat smoke effect by liquid
It is changed into gaseous state, certain wet environment, SO is formed in particle surface2Generation desulfurization stone is reacted with micro mist lime stone under this wet environment
Cream, achievees the purpose that desulfurization；
5th step：Material forms Desulphurization after being reacted in high solid-gas ratio reactor and enters first separator with flue gas,
Grey surge bunker is segregated into back in first separator interior material；Partial material enters dust collecting system with flue gas, filtered,
Collected after deashing and enter back grey surge bunker；Flue gas is discharged into air through air-introduced machine after purification；
6th step：Enter batch mixing humidification system after metering system metering under storehouse into the circulation desulfurization ash for returning grey surge bunker
System, mixes jointly with desulfurizing agent and water, and so far technique forms circulation；
7th step：Circulation desulfurization ash when returning grey surge bunker and reaching high charge level arrange outside Desulphurization, is formed final outer
Arrange Desulphurization.
The particle mean size of the particulate lime stone is less than 6 μm, material water ratio control after being humidified in the batch mixing humidification system
For system 4~6%, the flue-gas temperature into high solid-gas ratio reactor is not less than 150 DEG C, goes out the flue gas of high solid-gas ratio reactor
Temperature is not higher than 65 DEG C, and humidity is not more than 50%, the high solid-gas ratio reactor gas inside dust concentration highest 3000g/Nm3,
The separative efficiency of the just separator is 50~90%, and final outer sulphur ash moisture of getting rid of is no more than 3%.
The utility model additionally provides a kind of high solid-gas ratio dehumidification desulfurization general character system based on micro mist lime stone, including：
For storing the material buffer warehouse of micro mist lime stone；
For storing time grey surge bunker of circulation desulfurization ash；
For the metering system measured to the micro mist lime stone and circulation desulfurization ash of being sent into batch mixing humidification system；
For the batch mixing humidification system that the micro mist lime stone and circulation desulfurization ash are mixed and be humidified；
For the water system to supply water to the batch mixing humidification system；
For making the high solid-gas ratio reactor of humidification by mixing of gas material and flue gas progress reaction desulfuration, the high solid-gas ratio reaction
Device is connected with batch mixing humidification system and flue；
Be connected with the exhanst gas outlet of the high solid-gas ratio reactor be used for carry out feed separation first separator and gather dust
System, the just separator and the material outlet of dust collecting system are connected with returning grey surge bunker；
And the air-introduced machine that power is provided is connected with the dust collecting system exhanst gas outlet.
Under the material buffer warehouse set strength activation system, prevent micro mist lime stone it is hardened, reunite caused by can not be just
Normal discharging.
The metering system is adjustable metered system, and metering method is spiral metering, or is measured for closed belt.
The batch mixing humidification system is humidified for online batch mixing, and process is continuous.
Tthe utility model system may also include：
For the fluid-bed for being fluidized the humidification by mixing of gas material before high solid-gas ratio reactor is sent into.
The fluid-bed fluidizes for strength, and material is in suspended state after fluidisation.
The dust collecting system is bag collector, such as double filtering overlay film bag filters.
Compared with prior art, the beneficial effects of the utility model are：
1) desulfuration efficiency is high；
2) invest small；
3) waste water zero produces；
4) flue gas moisture content is small；
5) Desulphurization moisture content is low.
To sum up, the utility model desulfuration efficiency can reach more than 95%, have desulfuration efficiency height, reduced investment, production without waste water,
Flue gas hydrofuge is small, Desulphurization moisture content is low.
Brief description of the drawings
Fig. 1 is the flue gas desulfurization process block diagram of the utility model.
Fig. 2 is one structure diagram of flue gas desulphurization system form of the utility model.
Fig. 3 is the relation of the smoke desulfurization efficiency and calcium sulfur ratio in the experiment of high solid-gas ratio dehumidification desulfurization pilot scale platform.
Fig. 4 is the relation of the smoke desulfurization efficiency and humidity in the experiment of high solid-gas ratio dehumidification desulfurization pilot scale platform.
Fig. 5 is the smoke desulfurization efficiency and SO in the experiment of high solid-gas ratio dehumidification desulfurization pilot scale platform2The relation of entrance concentration.
Embodiment
Describe the embodiment of the utility model in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of high solid-gas ratio dehumidification desulfurization general character method based on micro mist lime stone, includes the following steps：
The first step：Desulfurizing agent micro mist lime stone is stored in material buffer warehouse, micro mist lime stone is ultra-fine calcium-based desulfurization
Agent, its mineral are CaCO3, particle mean size is less than 6 μm.
Second step：Surge bunker divides into metering system, and desulfurizing agent is measured, and batch mixing humidification system is entered after metering, together
When into batch mixing humidification system also have circulation desulfurization ash and humidification water, in batch mixing humidification system, material be adequately mixed and
Humidification, batch mixing humidification system are humidified for online batch mixing, and process is continuous, and material water ratio is controlled 4~6% after humidification, material
Mobility is preferable.
3rd step：Humidification blended stock enters high solid-gas ratio reactor after fluid-bed fully fluidizes, and fluid-bed is strength stream
Change, material is in suspended state after fluidisation.
4th step：The smoke components of material and temperature not less than 150 DEG C mix in high solid-gas ratio reactor, and moisture is in warm
Gaseous state is changed into from liquid under flue gas effect, certain wet environment, SO are formed about in particle surface2Under this wet environment with micro mist
Lime stone reaction generation solid matter, achievees the purpose that desulfurization.
5th step：Material is reached as high as than dust concentration inside reactor gas admittedly in high solid-gas ratio reactor reaction, height
3000g/Nm3, after reaction formed Desulphurization enter first separator with flue gas, first separator interior divide material separated into
Enter back grey surge bunker, its separative efficiency of first separator is 50~90%；Partial material enters dust collecting system with flue gas, passes through
Filter, collects after deashing and enters back ash surge bunker, and dust collecting system is bag collector, such as the high rate dust-precipitator of double overlay films.Only
Flue-gas temperature is not higher than 65 DEG C after change, and humidity is not more than 50%, and air is discharged into through air-introduced machine.
6th step：Enter batch mixing humidification system after metering system metering under storehouse into the circulation desulfurization ash for returning grey surge bunker
System, mixes jointly with desulfurizing agent and water, and so far technique forms circulation.Metering system can be adjustable metered device, metering method
Can be spiral metering, or closed belt measures or other adjustable dynamic measuring modes.
7th step：Circulation desulfurization ash when returning and reaching high charge level in grey surge bunker arrange outside Desulphurization, is formed final
Outer row's Desulphurization, the moisture of outer row's Desulphurization are not more than 3%, and system desulfuration efficiency is more than 95%.
The utility model provides corresponding system, including following form at the same time.
As shown in Fig. 2, one of form for Tthe utility model system：
Micro mist lime stone is stored in material buffer warehouse 01, and storehouse divides into manually gate valve 02, and manually gate valve 02 is in normal
Open state, when follow-up system closes maintenance when something goes wrong.02 lower part of manually gate valve set by frequency conversion revolving plow reclaimer 03 and
The metering system that spiral weighing balance 04 forms, enters humidification blender 05 after accurate measurement is carried out to desulfurizing agent, while desulfurization follows
Ring ash and humidification water also enter humidification blender 05, and material is sufficiently mixed, is humidified, activates laggard become a mandarin in humidification blender 05
Change groove 06, fluid-bed power comes from fluidized air blower 07.Material is delivered to seasoning spreading box 08 through fluid-bed 06, after being disperseed by seasoning spreading box 08
Into high solid-gas ratio reactor 09.Material and smoke components mixing, moisture are acted in heat smoke in high solid-gas ratio reactor 09
Under gaseous state is changed into from liquid, certain wet environment, SO are formed about in particle surface2Under this wet environment with ultra-fine calcium-based material
Reaction generation solid matter, achievees the purpose that desulfurization.Circulating ash is formed after reactive desulfurizing agent and is introduced into just separator 11 with the wind,
First 11 inside points material of separator is separated, and being discharged into back grey surge bunker 15 through revolving plow reclaimer 12 carries out buffer storage.Its remaining part
Desulfurizing agent is divided to enter bagroom 13 together with the wind, desulfurizing agent is all collected in bagroom 13, is fed through impeller
Machine 14 enters back grey surge bunker 15.Storehouse divides into manually gate valve 16, it is in normally open position, and lower flow is closed when breaking down
Maintenance.16 lower part of manually gate valve sets extra quality road, sets electric brake plate valve 18 to carry out the outer row of Desulphurization all the way, sets all the way
Electric brake plate valve 17 carries out the disconnection control of Desulphurization circulation.17 lower part of electric brake plate valve set by frequency conversion revolving plow reclaimer 19 and
Screw feeder claims the metering system of 20 compositions, it enters humidification blender 05 after accurate measurement is carried out to circulation desulfurization ash, is formed
Desulphurization circulates.Gas after the processing of bagroom 13 is discharged into air by air-introduced machine 21.
The utility model desulfuration efficiency is with calcium sulfur ratio, humidity and SO2Entrance concentration experiment is as follows：
In 180 ± 10 DEG C of smoke inlet temperature, exhaust gas volumn 300m3Under conditions of/h, different calcium sulfur ratios, DIFFERENT WET are chosen
Degree, difference SO2Entrance concentration is tested in high solid-gas ratio dehumidification desulfurization pilot scale platform, is investigated smoke desulfurization efficiency and is become with above-mentioned factor
The relation of change, such as Fig. 3, Fig. 4 and Fig. 5.As calcium sulfur ratio by 50 increases to 250, flue gas SO2Concentration is by 72mg/Nm3It is reduced to
5mg/Nm3, desulfuration efficiency brought up to 99.5% by 93%.When calcium sulfur ratio reaches 250, reach lime stone --- gypsum
The smoke desulfurization efficiency of method, fully meets the requirement of ultra-clean discharge.In calcium sulfur ratio under the same conditions, humidity is increased to by 16%
39%, smoke desulfurization efficiency increases to 96% by 85%, but smoke desulfurization efficiency growth trend slows down if humidity continues increase.It is existing
Smoke moisture is no more than 50% and is advisable under the operating mode of field.With the increase of sulfur dioxide in flue gas concentration, outlet drain value is stablized
It is maintained at 10mg/Nm3Below.
Claims (8)
- A kind of 1. high solid-gas ratio dehumidification desulfurization general character system based on micro mist lime stone, it is characterised in that including：For storing the material buffer warehouse of micro mist lime stone；For storing time grey surge bunker of circulation desulfurization ash；For the metering system measured to the micro mist lime stone and circulation desulfurization ash of being sent into batch mixing humidification system；For the batch mixing humidification system that the micro mist lime stone and circulation desulfurization ash are mixed and be humidified；For the water system to supply water to the batch mixing humidification system；For making humidification by mixing of gas material and flue gas carry out the high solid-gas ratio reactor of reaction desulfuration, the high solid-gas ratio reactor with Batch mixing humidification system and flue connection；What is be connected with the exhanst gas outlet of the high solid-gas ratio reactor is used to carry out the first separator and dust collecting system of feed separation, The just separator and the material outlet of dust collecting system are connected with returning grey surge bunker；And the air-introduced machine that power is provided is connected with the dust collecting system exhanst gas outlet.
- 2. the high solid-gas ratio dehumidification desulfurization general character system based on micro mist lime stone according to claim 1, it is characterised in that institute State under material buffer warehouse setting strength activation system, prevent micro mist lime stone is hardened, reunite caused by can not normal discharging.
- 3. the high solid-gas ratio dehumidification desulfurization general character system based on micro mist lime stone according to claim 1, it is characterised in that institute It is adjustable metered system to state metering system, and metering method is spiral metering, or is measured for closed belt.
- 4. the high solid-gas ratio dehumidification desulfurization general character system based on micro mist lime stone according to claim 1, it is characterised in that institute State batch mixing humidification system to be humidified for online batch mixing, process is continuous.
- 5. the high solid-gas ratio dehumidification desulfurization general character system based on micro mist lime stone according to claim 1, it is characterised in that also Including：For the fluid-bed for being fluidized the humidification by mixing of gas material before high solid-gas ratio reactor is sent into.
- 6. the high solid-gas ratio dehumidification desulfurization general character system based on micro mist lime stone according to claim 5, it is characterised in that institute State fluid-bed to fluidize for strength, material is in suspended state after fluidisation.
- 7. the high solid-gas ratio dehumidification desulfurization general character system based on micro mist lime stone according to claim 5, it is characterised in that institute It is bag collector to state dust collecting system.
- 8. the high solid-gas ratio dehumidification desulfurization general character system based on micro mist lime stone according to claim 7, it is characterised in that institute Bag collector is stated as double filtering overlay film bag filters.
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| CN109046561A (en) * | 2018-09-27 | 2018-12-21 | 天津水泥工业设计研究院有限公司 | A kind of steel slag final grinding system of roll squeezer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109046561A (en) * | 2018-09-27 | 2018-12-21 | 天津水泥工业设计研究院有限公司 | A kind of steel slag final grinding system of roll squeezer |
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