CN107321166A - A kind of semidry process desulfurizer - Google Patents
A kind of semidry process desulfurizer Download PDFInfo
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- CN107321166A CN107321166A CN201710620375.1A CN201710620375A CN107321166A CN 107321166 A CN107321166 A CN 107321166A CN 201710620375 A CN201710620375 A CN 201710620375A CN 107321166 A CN107321166 A CN 107321166A
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- room
- deflector
- close phase
- ciculation fluidized
- chain type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
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- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The present invention 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.Ash-laden gas enters behind close phase room and ciculation fluidized room, eddy flow is formed in the presence of deflector, on the one hand the generation of eddy flow make it that contact of the flue gas with circulating ash is more abundant, on the other hand make it that relatively fine particle circulating ash condenses to form larger particles in bottom of towe sedimentation in flue gas, reduces the load of dust remove of deduster.The device adds the desulphurization reaction time, improves the utilization rate of circulating ash, reduces deduster load, extends the service life of deduster, reduces operating cost.
Description
Technical field
The present invention relates to field of environment engineering technology, a kind of semidry process desulfurizer is particularly related to.
Background technology
China is while rapid economic development, and the improvement of pollutant is very urgent, 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 being stepped up, the proposition of near-zero release concept especially in recent years, most enterprises all towards this
Direction is close, and dust concentration is effectively controlled, 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
Steel and iron industry sintered particles thing, sulfur dioxide, discharged nitrous oxides will be respectively plus tight in emission of industrial pollutants standard, 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.It is following annual only in Hebei province to meet the requirement of new Air Pollutant Emission limit value according to measuring and calculating
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 in key area not higher than 200mg/m by defining to all fired power generating units in 20153, it is non-
Key area 400mg/m3Limit value.The newly-increased unit of key area came into effect 200mg/m from 20103Emission limit.
Conventional sulfur method has semidry method, dry and wet at present.Dry desulfurization is high due to investment and operating cost, 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, therefore its scope of application about comes wider.
The present invention proposes a kind of improved desulfurizing tower, and internal structure transformation has been carried out to original semi-dry desulphurization tower,
So that circulating ash utilization rate increases, the Dust Capacity into deduster is reduced, and the big dust particle ratio into deduster is reduced, from
And reduce the load and system energy consumption of deduster.
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
Plant 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 to there is circulating ash utilization rate in above-mentioned semi-dry desulphurization equipment
Relatively low, deduster Inlet dust is at concentrations up to 600g/L, cloth bag serious wear, the shortcomings of follow-up operation is costly.
The content of the invention
In order to solve, existing semi-dry desulphurization equipment deduster load is big, circulating ash utilization rate is relatively low asks the present invention
Topic adds deflector according to fluent analog results in desulfurizing tower, changes absorption tower there is provided a kind of semidry process desulfurizer
Interior original flow of flue gas path, adds the residence time, 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 is exported；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 be 0.1-5m, width is 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
Really.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.
The above-mentioned technical proposal of the present invention 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 circulation
Two row deflectors are respectively provided with fluidising chamber.Simulated through laboratory test repeatedly and Fluent, the design of deflector causes flue gas to exist
Upward eddy flow is formed in close phase room and ciculation fluidized room respectively, the generation of eddy flow make it that the reaction of flue gas and circulating ash is more thorough
Bottom, circulating ash utilization rate is improved；Eddy flow in ciculation fluidized room causes the fine grained carried in flue gas to change into larger particles, turns
The larger particles changed and come are deposited in ash bucket together with original larger particles circulating ash, into recycling.Due to the work of eddy flow
With the dust concentration into deduster reduces by 20% or so, and high degree reduces the abrasion of cloth bag, extends the use of cloth bag
In the life-span, reduce the operating cost of engineering.
Brief description of the drawings
Fig. 1 is semidry process desulfurizer structural representation of the invention.
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 problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
The present invention is for existing semi-dry desulphurization equipment deduster load is big, circulating ash utilization rate is relatively low asks
There is provided a kind of semidry process desulfurizer for topic.
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 are separated；Exhanst gas outlet 8 is located at the right outer upper in ciculation fluidized room 5, 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, it 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 that by circulating ash
Utilization rate improve, after testing in the case of circulation multiple on an equal basis, can to reduce by 40% left for the content of the efficient oxidation calcium in useless ash
The right side, has effectively saved operating cost；And eddy flow is also by the fine particle circulating ash collided with each other formation larger particles circulation
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 and concentration in flue gas 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, the requirement standard of cloth bag is also reduced, so that 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 is sufficiently mixed with the circulating ash by humidification in close phase room 2, 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 is improved, 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 in the middle of 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
The concentration of circulating ash is about 80% or so of close phase room 2 in concentration, ciculation fluidized room 5.In ciculation fluidized room 5, also due to
The presence of deflector 3, ciculation fluidized room 5 also forms eddy flow, and flue gas and circulating ash are fully contacted in eddy flow, collided, reaction.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.
Present invention design deflector length is 0.1-5m, and width is 0.1-1m, is 45 degree with vertical direction angle, each room
It is that the spacing between 0.1-6m, same row deflector is 0.5-2m to have the spacing between two row deflectors, two row deflectors.Chain type is stirred
Device is highly 1-15m, and a diameter of 0.3m of shaft portion, agitator bottom constitutes for 1-15 roots chain, chain type agitator top
It is connected with top in device, 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 the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of 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 is exported（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 between 0.1-6m, 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 stirred positioned at chain type
Device（4）Bottom, is made up of, chain type agitator 1-15 root chains（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 it is long
Spend for 0.5-3m, a width of 0.05-0.1m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710620375.1A CN107321166B (en) | 2017-07-26 | 2017-07-26 | Semi-dry desulfurization device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710620375.1A CN107321166B (en) | 2017-07-26 | 2017-07-26 | Semi-dry desulfurization device |
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| Publication Number | Publication Date |
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| CN107321166A true CN107321166A (en) | 2017-11-07 |
| CN107321166B CN107321166B (en) | 2023-08-29 |
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| CN201710620375.1A Active CN107321166B (en) | 2017-07-26 | 2017-07-26 | Semi-dry desulfurization device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999629A (en) * | 2019-04-17 | 2019-07-12 | 中国恩菲工程技术有限公司 | Multistage dense phase semi-dry desulphurization reactor |
| CN113144771A (en) * | 2021-03-29 | 2021-07-23 | 北京科技大学 | Flue gas deacidification dust removal integrated device based on dense-phase dry tower |
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| WO2015054929A1 (en) * | 2013-10-15 | 2015-04-23 | 中国科学院过程工程研究所 | Combined desulfuration, denitration, and mercury removal apparatus and method using semidry process in circulating fluidized bed |
| CN207085668U (en) * | 2017-07-26 | 2018-03-13 | 北京北科环境工程有限公司 | A kind of semidry process desulfurizer |
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| EP0203430A1 (en) * | 1985-05-07 | 1986-12-03 | Phoenix Gesellschaft für Rauchgasreinigung und Umwelttechnik mbH | Process and installation for cleaning flue gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999629A (en) * | 2019-04-17 | 2019-07-12 | 中国恩菲工程技术有限公司 | Multistage dense phase semi-dry desulphurization reactor |
| CN109999629B (en) * | 2019-04-17 | 2024-01-05 | 中国恩菲工程技术有限公司 | Multistage dense-phase semi-dry desulfurization reactor |
| CN113144771A (en) * | 2021-03-29 | 2021-07-23 | 北京科技大学 | Flue gas deacidification dust removal integrated device based on dense-phase dry tower |
| CN113144771B (en) * | 2021-03-29 | 2024-06-04 | 北京科技大学 | Flue gas deacidification dust removal integrated device based on close coherent tower |
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| CN107321166B (en) | 2023-08-29 |
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