CN207085668U - A kind of semidry process desulfurizer - Google Patents
A kind of semidry process desulfurizer Download PDFInfo
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- CN207085668U CN207085668U CN201720915892.7U CN201720915892U CN207085668U CN 207085668 U CN207085668 U CN 207085668U CN 201720915892 U CN201720915892 U CN 201720915892U CN 207085668 U CN207085668 U CN 207085668U
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Abstract
The utility model provides a kind of semidry process desulfurizer, belongs to field of environment engineering technology.The device includes smoke inlet, close phase room, deflector, chain type agitator, ciculation fluidized room, dividing plate, ash bucket, exhanst gas outlet；Desulfurizing tower designs for inverted U, and smoke inlet is arranged on whole device outer upper, and charging aperture is located at the top of device.Desulfurizing tower is divided into close phase room and ciculation fluidized room by dividing plate.Deflector is respectively provided with close phase room and ciculation fluidized room, deflector is fixed on tower wall and dividing plate.After ash-laden gas enters close phase room and ciculation fluidized room, eddy flow is formed in the presence of deflector, the generation of eddy flow makes contact of the flue gas with circulating ash more abundant, while condenses in flue gas contained relatively fine particle circulating ash to form larger particles and settle in bottom of towe, reduces the load of dust remove of deduster.The device adds the desulphurization reaction time, improves circulating ash utilization rate, reduces deduster load, extends the service life of deduster, reduces operating cost.
Description
Technical field
Field of environment engineering technology is the utility model is related to, particularly relates to a kind of semidry process desulfurizer.
Background technology
While rapid economic development, the improvement of pollutant is very urgent in China, and haze is that each is Chinese in recent years
The pain of the people especially Beijing-Tianjin Ji people mind.Sulfur dioxide, nitrogen oxides and pellet are the main compositions of haze.
The suspended particulate substance of different-grain diameter in haze, different influences can be caused to health.Particle is thinner, and the chance being inhaled into is got over
Greatly, the activity in human body is stronger, and the harm to human body is bigger.Due to taking place frequently for haze weather, air contaminant treatment industry
Standard, national standard are stepping up, the proposition of near-zero release concept especially in recent years, most enterprises all towards this
Direction is close, and dust concentration effectively controls, by efficient cleaner.
Steel industry and power industry are the sources of pollutant emission, thus coal-burning boiler and iron and steel enterprise's smoke gas treatment into
Various regions Environmental Protection Agency mainlys grasp in recent years focus.New steel is put into effect within 2015 in the maximum Hebei province of steel emission reduction
Emission of industrial pollutants standard, steel and iron industry sintered particles thing, sulfur dioxide, discharged nitrous oxides will be respectively plus tight in new standard
To 50,180 and 300mg/m3, blast furnace ironmaking particulate matter, sulfur dioxide, discharged nitrous oxides are limited to 20,80 and 300mg/m3,
Steel-making lime kiln white clouds stone kiln roasting particle thing, sulfur dioxide, discharged nitrous oxides are limited to 30,80 and 400mg/m3, it is strict in
National standard.Promulgated in face of new standard, most of iron and steel enterprises of China or can not can not fully meet discharge standard requirement, compel
It is essential and wants upgrading.Only it is the requirement that meet new Air Pollutant Emission limit value in Hebei province according to measuring and calculating, it is following annual
Put into 30,000,000,000 yuan be used for transform and equipment operation, disposal of pollutants administer wide market.In terms of denitration, new standard
Discharged nitrous oxides concentration will all be performed by defining to all fired power generating units in 2015 is not higher than 200mg/m in key area3, it is non-
Key area 400mg/m3Limit value.The newly-increased unit of key area came into effect 200mg/m from 20103Emission limit.
Currently used sulfur method has semidry method, dry and wet.Dry desulfurization is because investment and operating cost are high, very
Hardly possible is received by general industry enterprise；There is flue gas tailing problem in wet method, although the wet-esp occurred in recent years can be
Solve tailing problem to a certain extent, but the characteristics of due to steel industry flue gas itself and chimney height problem, exhanst gas outlet row
Put and be still extremely difficult to standard；Semidry method investment, operating cost are low, and treatment effeciency is high, thus its scope of application about come it is wider.
The utility model proposes a kind of improved desulfurizing tower, has carried out internal structure to original semi-dry desulphurization tower and has changed
Make so that circulating ash utilization rate increases, and the Dust Capacity into deduster reduces, and the big dust particle ratio into deduster subtracts
It is few, so as to reduce the load of deduster and system energy consumption.
Current existing semi-dry process flue gas desulphurization equipment has, such as Chinese patent：" one kind is carried and stirred ZL200420009188.8
Mix the flue gas desulfurization device of device ", ZL200520023243.3 " a kind of semi-dry flue gas desulfurization device with agitator ",
ZL200610089328.0 " a kind of dense-phase tower device of selective desulfurization ", a kind of ZL200610114609.7 " dense phase circulations
Fluidize desulphurization plant ", ZL200720103180.1 " a kind of circular dense phase fluidizing desulfurization apparatus ", ZL200620022793.8 " one
Kind cylinder shaped dense-phase tower desulfurizing and dust removing unit ", ZL200620119386.9 " a kind of composite stirring flue gas desulfurization device ",
ZL201020232657.8 " a kind of horizontal dense-phase circulating fluidizing dry-tower desulfurization device ",：A kind of ZL201020135487.1 " close phases
Circulating fluidizing dry-tower desulfurization device ", ZL201110149776.6 " a kind of semi-dry process flue gas desulphurization dust removal integrated plant ",
ZL201210393637.2 " a kind of semi-dry desulphurization equipment ".It is relative circulating ash utilization rate to be present in above-mentioned semi-dry desulphurization equipment
It is relatively low, the shortcomings of deduster Inlet dust is at concentrations up to 600g/L, cloth bag serious wear, and follow-up operation is costly.
Utility model content
Existing semi-dry desulphurization equipment deduster load is big, circulating ash utilization rate is relatively low in order to solve for the utility model
The problems such as, there is provided a kind of semidry process desulfurizer, deflector is added according to fluent analog results in desulfurizing tower, changes suction
Original flow of flue gas path in tower is received, the residence time is added, improves circulating ash utilization rate.
The device includes smoke inlet, close phase room, deflector, chain type agitator, ciculation fluidized room, dividing plate, ash bucket and cigarette
Gas exports；Smoke inlet is arranged on the left outside upper lateral part of close phase room；Deflector is arranged on close phase room and ciculation fluidized chamber interior；Chain
Formula agitator is vertically set on close phase room and ciculation fluidized chamber interior；Dividing plate separates close phase room and ciculation fluidized room；Flue gas
Outlet is located at the right outer upper in ciculation fluidized room, and exhanst gas outlet is arranged symmetrically with smoke inlet；Ash bucket is in the most lower of whole device
Side.
Wherein, deflector is with a vertical 35 degree of angles.
Deflector is the design of two row in close phase room and ciculation fluidized room.
Deflector length is 0.1-5m, width 0.1-1m, is 45 degree with vertical direction angle, between two row deflectors between
Away from for 0.1-6m, the spacing between same row deflector is 0.5-2m.
Chain type agitator not only plays uniform circulation ash, breaks up bulky grain and strengthens circulating ash and the mixing effect of flue gas
Fruit.Chain type agitator is highly 1-15m, and chain type agitator is divided into axostylus axostyle and chain two parts, a diameter of 0.3m of shaft portion, chain
Bar part is located at chain type agitator bottom, is made up of 1-15 root chains, and chain type agitator top is connected with top in device, chain type
Agitator bottom is away from ash bucket bottom 0.3m.
The chain length of chain type agitator is 0.5-3m, a width of 0.05-0.1m.
Above-mentioned technical proposal of the present utility model has the beneficial effect that：
In such scheme, desulfurizing tower is designed using inverted U, and a tower is divided to two Room, close phase room and ciculation fluidized room.Close phase room and
Two row deflectors are respectively provided with ciculation fluidized room.Simulated through laboratory test repeatedly and Fluent, the design of deflector causes cigarette
Gas forms upward eddy flow respectively in close phase room and ciculation fluidized room, and the generation of eddy flow causes the reaction of flue gas and circulating ash more
Add thoroughly, circulating ash utilization rate improves；The fine grained that eddy flow in ciculation fluidized room to carry in flue gas changes into larger
Grain, the larger particles being transformed are deposited in ash bucket together with original larger particles circulating ash, into recycling.Due to eddy flow
Effect, into deduster dust concentration reduce by 20% or so, high degree reduces the abrasion of cloth bag, extends cloth bag
Service life, reduce the operating cost of engineering.
Brief description of the drawings
Fig. 1 is semidry process desulfurizer structural representation of the present utility model.
Wherein：1- smoke inlets；The close phase rooms of 2-；3- deflectors；4- chain type agitators；The ciculation fluidized rooms of 5-；6- dividing plates；7-
Ash bucket；8- exhanst gas outlets.
Embodiment
To make the technical problems to be solved in the utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And specific embodiment is described in detail.
The utility model is for existing semi-dry desulphurization equipment deduster load is big, circulating ash utilization rate is relatively low
The problem of, there is provided a kind of semidry process desulfurizer.
As shown in figure 1, in the device, smoke inlet 1 is arranged on the left outside upper lateral part of close phase room 2；Deflector 3 is arranged on close
Inside phase room 2 and ciculation fluidized room 5；Chain type agitator 4 is vertically set on inside close phase room 2 and ciculation fluidized room 5；Dividing plate 6 will
Close phase room 2 and ciculation fluidized room 5 separate；Exhanst gas outlet 8 is located at ciculation fluidized 5 right outer upper of room, exhanst gas outlet 8 and flue gas
Entrance 1 is arranged symmetrically；Bottom of the ash bucket 7 in whole device.
Wherein, deflector 3 is with a vertical 35 degree of angles.Due to special structure design, can be formed between two row deflectors
Stronger eddy flow.Eddy flow causes the residence time of flue gas, and contact of the flue gas with circulating ash is more abundant, so as to by circulating ash
Utilization rate improve, after testing in the case of circulation multiple on an equal basis, it is left can to reduce by 40% for the content of the efficient oxidation calcium in useless ash
The right side, operating cost is effectively saved；And the fine particle circulating ash to collide with each other is also formed larger particles circulation by eddy flow
Ash, so that the bulky grain into ciculation fluidized area is reduced, flue gas carries circulating ash and passed through in the eddy flow in ciculation fluidized area
Afterwards, the entrained dust granules size in flue gas and concentration can be reduced further, and the dust concentration of exiting flue gas can be by 600g/
L or so drops to 480g/L or so, not only reduces the abrasion of sack cleaner, also reduces the requirement standard of cloth bag, so as to pole
Operating cost is reduced in big degree.
In the present apparatus, smoke inlet 1 is arranged on the close left-external side upper end of phase room 2, and sulfur-containing smoke gas enters close phase from smoke inlet 1
Room 2, flue gas by the circulating ash of humidification in close phase room 2 with being sufficiently mixed, and following current flows downward, and flue gas and circulating ash are close
In the presence of deflector 3 in phase room 2, eddy flow is formed, the generation of eddy flow causes the residence time of flue gas to increase, flue gas and circulation
The contact of ash is more abundant, and the utilization rate of circulating ash improves, and circulating ash part relatively fine particle in the presence of eddy flow condenses shape
Into larger particles, larger particles circulating ash is fallen into ash bucket 7, and relatively fine particle enters in ciculation fluidized room 5 with flue gas, close phase room
2 among ciculation fluidized room 5 with being provided with dividing plate 6, and dividing plate 6 adds the time of contact of circulating ash and flue gas, improves system desulfurization
Efficiency.The structure of ciculation fluidized room 5 is identical with close phase room 2, it is unique unlike circulating ash concentration, because part is larger
Particle is fallen into ash bucket 7 in close phase room 2, therefore the circulation ash concentration of ciculation fluidized room 5 is less than circulating ash in close phase room 2
Concentration, the concentration of circulating ash is about 80% or so of close phase room 2 in ciculation fluidized room 5.In ciculation fluidized room 5, also due to
The presence of deflector 3, ciculation fluidized room 5 also form eddy flow, and flue gas and circulating ash are fully contacted in eddy flow, collide, reacted.Follow
Relatively fine particle in ring fluidising chamber 5 forms larger particles in eddy flow, and larger particles are fallen into ash bucket 7, part relatively fine particle with
Flue gas continues up flowing, is entered by exhanst gas outlet 8 in follow-up deduster.The circulating ash for falling directly into ash bucket 7 passes through chain type
Agitator 4 is dispersed as relatively fine particle and conveyed together with the circulating ash in deduster by middle pressure, sends back in close phase room 2, from this
Complete whole circulation.
The utility model design deflector length is 0.1-5m, width 0.1-1m, is 45 degree with vertical direction angle, often
There are a two row deflectors individual room, and the spacing between two row deflectors is 0.1-6m, and the spacing between same row deflector is 0.5-2m.Chain type
Agitator is highly 1-15m, a diameter of 0.3m of shaft portion, and agitator bottom is 1-15 roots chain composition, chain type agitator
Top is connected with top in device, and bottom is away from the bottom 0.3m of ash bucket 7.The chain length of chain type agitator is 0.5-3m, a width of
0.05-0.1m。
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of principle described in the utility model is not departed from, some improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (6)
- A kind of 1. semidry process desulfurizer, it is characterised in that：Including smoke inlet（1）, close phase room（2）, deflector（3）, chain type Agitator（4）, ciculation fluidized room（5）, dividing plate（6）, ash bucket（7）And exhanst gas outlet（8）；Smoke inlet（1）It is arranged on close phase room （2）Left outside upper lateral part；Deflector（3）It is arranged on close phase room（2）With ciculation fluidized room（5）It is internal；Chain type agitator（4）Vertically It is arranged on close phase room（2）With ciculation fluidized room（5）It is internal；Dividing plate（6）By close phase room（2）With ciculation fluidized room（5）Separate；Cigarette Gas exports（8）Positioned at ciculation fluidized room（5）Right outer upper, exhanst gas outlet（8）With smoke inlet（1）It is arranged symmetrically；Ash bucket（7） In the bottom of whole device.
- 2. semidry process desulfurizer according to claim 1, it is characterised in that：The deflector（3）With a vertical 35 degree of angles.
- 3. semidry process desulfurizer according to claim 1, it is characterised in that：The deflector（3）In close phase room（2）With Ciculation fluidized room（5）In be two row design.
- 4. semidry process desulfurizer according to claim 1, it is characterised in that：The deflector（3）Length is 0.1-5m, Width is 0.1-1m, is 45 degree with vertical direction angle, and the spacing between two row deflectors is 0.1-6m, between same row deflector Spacing is 0.5-2m.
- 5. semidry process desulfurizer according to claim 1, it is characterised in that：The chain type agitator（4）Highly it is 1- 15m, chain type agitator（4）It is divided into axostylus axostyle and chain two parts, a diameter of 0.3m of shaft portion, portion of chain is located at chain type stirring Device（4）Bottom, it is made up of 1-15 root chains, chain type agitator（4）Top is connected with top in device, chain type agitator（4）Under Portion is away from ash bucket（7）Bottom 0.3m.
- 6. semidry process desulfurizer according to claim 5, it is characterised in that：The chain type agitator（4）Chain length Spend for 0.5-3m, a width of 0.05-0.1m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720915892.7U CN207085668U (en) | 2017-07-26 | 2017-07-26 | A kind of semidry process desulfurizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720915892.7U CN207085668U (en) | 2017-07-26 | 2017-07-26 | A kind of semidry process desulfurizer |
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| CN207085668U true CN207085668U (en) | 2018-03-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107321166A (en) * | 2017-07-26 | 2017-11-07 | 北京北科环境工程有限公司 | A kind of semidry process desulfurizer |
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- 2017-07-26 CN CN201720915892.7U patent/CN207085668U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107321166A (en) * | 2017-07-26 | 2017-11-07 | 北京北科环境工程有限公司 | A kind of semidry process desulfurizer |
| CN107321166B (en) * | 2017-07-26 | 2023-08-29 | 北京北科环境工程有限公司 | Semi-dry desulfurization device |
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