CN206701068U - A kind of flue gas of sintering machine dust arrester - Google Patents
A kind of flue gas of sintering machine dust arrester Download PDFInfo
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- CN206701068U CN206701068U CN201720432089.8U CN201720432089U CN206701068U CN 206701068 U CN206701068 U CN 206701068U CN 201720432089 U CN201720432089 U CN 201720432089U CN 206701068 U CN206701068 U CN 206701068U
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Abstract
The utility model discloses a kind of flue gas of sintering machine dust arrester, desulfurating dust removing device for flue gas includes sintering machine, deduster, absorption tower and slurry pool, deduster includes the first deduster and the second deduster, and absorption tower includes wet absorption tower and semidry method absorption tower；Sintering machine is connected with semidry method absorption tower and wet absorption tower respectively by flue, the first deduster is provided between sintering machine and wet absorption tower, the exhanst gas outlet on semidry method absorption tower is connected with the second deduster, and the outlet pipe of the second deduster and the outlet pipe of wet absorption tower are connected with the air inlet pipe of chimney；Second deduster, wet absorption tower and semidry method absorption tower are connected with slurry pool.It is combined using semi-dry desulphurization and wet desulphurization, semi-dry desulphurization ash is used for wet desulphurization, is efficiently solved semi-dry desulphurization ash and be difficult to disposal and wet desulfurization flue gas entrainment water smoke problem.
Description
Technical field
A kind of flue gas of sintering machine dust arrester is the utility model is related to, belongs to flue gas desulfurization and dedusting field.
Background technology
Sintering flue gas desulfurization is the emphasis and difficult point of present steel industry efforts at environmental protection, at present,《Steel and iron industry atmosphere pollution
Thing discharge standard》（Exposure draft）Provide SO in newly-built enterprise's sintering device flue gas2Discharge standard is 100mg/Nm3.With country
Raising to environmental protection requirement, to sintering device flue gas to SO2Emission request also will be more and more stricter.Sintering device flue gas at this stage
Sulfur removal technology mainly includes semidry method and Limestone-gypsum Wet Flue Gas Desulfurization Process technique, although semi-dry desulphurization is carried secretly in the absence of flue gas
Water smoke problem, but accessory substance --- semi-dry desulphurization ash（Abbreviation Desulphurization）It is difficult to dispose, while is difficult in adapt to the higher SO of concentration2
Fume treatment.Limestone-gypsum Wet Flue Gas Desulfurization Process technique, desulfuration efficiency is higher, but the problems such as flue gas entrainment water smoke be present.
For example, the Chinese utility model patent document that application publication number is CN102003886 A discloses a kind of sintering machine
Flue gas respective-guide type desulfurizer and method, by being handled differently to sintering machine difference bellows flue gas, to a wherein SO2Concentration
Higher flue gas is handled, another SO2The relatively low flue gas partial process part of concentration is directly discharged, highly concentrated SO2Flue gas uses
Semi-dry desulphurization system processing, the untreated low-sulfur section flue gas in this method part directly discharge, and pollute environment, while semidry method be present
The problem of Desulphurization processing is difficult.Another Chinese utility model patent document（The A of publication number 101862583）Disclose a kind of suitable
The technique for closing sintering machine of steel mill flue gas desulfurization, using ammonia desulfurizing process, coproduction ammonium sulfate products.But still there is flue gas in the technique
The problems such as carrying water smoke secretly.
Utility model content
The utility model solve technical problem be：Taken off for existing semi-dry desulphurization and lime/lime stone-gypsum wet
A kind of the problem of sulphur cuts both ways, with reference to sintering machine burning feature, there is provided sintering device flue gas using lime/lime stone as desulfurizing agent
Dry and wet combined desulfurization dust removal method and device effectively remove the SO in sintering device flue gas2And dust, realize sintering device flue gas SO2
Qualified discharge.
The utility model can also solve a technical problem：Due to the raising of the discharge standard of flue gas, for
For the desulphurization plant used, standard during due to design is not high or the reasons such as service life is longer are often difficult to meet new row
Standard is put, but directly desulphurization plant is updated and very big cost input can be generally required, the utility model can be with pin
The desulfurating dust-removing equipment used is transformed, new discharge standard can be realized with minimum cost.
The technical solution of the utility model is to provide a kind of flue gas of sintering machine dust arrester, including sintering machine, dedusting
Device, absorption tower and slurry pool, deduster include the first deduster and the second deduster, and absorption tower includes wet absorption tower and half-dried
Method absorption tower；Sintering machine is connected with semidry method absorption tower and wet absorption tower respectively by flue, and sintering machine is inhaled with wet method
The first deduster is provided between receipts tower, the exhanst gas outlet on semidry method absorption tower is connected with the second deduster, and the second deduster goes out
Air inlet pipe of the outlet pipe of feed channel and wet absorption tower with chimney is connected；Second deduster, wet absorption tower and half-dried
Method absorption tower is connected with slurry pool.
Preferably, slurry pool includes interconnected the first slurry pool and the second slurry pool, and the first slurry pool passes through pipeline
It is connected with wet absorption tower, the second slurry pool is connected by pipeline with semidry method absorption tower.
Preferably, wet absorption tower is interconnected to form circulation with cyclone, and cyclone bottom is also connected with filter press.
Preferably, the bottom of the wet absorption tower is desulfurization slurry area, and cyclone passes through pump and pipe with desulfurization slurry area
Road connects.
Preferably, filter press is connected with roller drier.
Preferably, the sintering machine is also connected by flue with roller drier.
Preferably, the first deduster is electric cleaner；Second deduster is sack cleaner.
Preferably, the smoke inlet of the wet absorption tower is located at absorption tower bottom, the exhanst gas outlet position of wet absorption tower
At the top of absorption tower.
Preferably, the wet absorption tower also includes spraying layer and demister, and demister is located at spraying layer and wet absorption
Between the exhanst gas outlet of tower.
Preferably, the bottom of the wet absorption tower is additionally provided with oxidation unit and agitating device.
Process ba- sis of the present utility model is flue gas of sintering machine dust collecting process, and technique comprises the following steps：
（1）Sintering device flue gas is divided into low-sulfur section flue gas and high-sulfur section flue gas；
（2）Carry out semi-dry desulphurization to low-sulfur section flue gas, gas after desulfurization removing dust again, obtain flue gas A；To high-sulfur section
After flue gas removing dust, then wet desulphurization is carried out to flue gas, obtain flue gas B；
（3）Discharged after flue gas A and flue gas B is mixed.
Preferably, Desulphurization is obtained after the flue gas desulfurization of low-sulfur section, the dust A obtained after gas removing dust；Desulphurization and powder
Dirt A is used to configure the slurries of semi-dry desulphurization and/or the slurries of wet desulphurization.
Preferably, the slurries after wet desulphurization utilize through cyclone classification, top stream serum recycle, and bottom slurry carries out filter press
Obtain desulfurated plaster and filtrate.
Preferably, the temperature of the flue gas A is 100 ~ 110 DEG C, and the temperature of the flue gas B is 50 ~ 60 DEG C；Flue gas A and cigarette
The mixed flue-gas temperatures of gas B are 75 ~ 85 DEG C.
Preferably, SO in low-sulfur section flue gas2Concentration is less than 400mg/Nm3；SO in high-sulfur section flue gas2Concentration 1000 ~
2000mg/Nm3。
Preferably, 130 ~ 140 DEG C of low-sulfur section flue-gas temperature, dust concentration about 3 ~ 6g/m3, high-sulfur section flue-gas temperature 130 ~
140 DEG C, dust concentration about 3 ~ 6g/m3。
Preferably, wet desulphurization slurry obtains the desulfurated plaster A of water content 15 ~ 25%, desulfurated plaster A after separation of solid and liquid
Into roller drier, the low-sulfur section original smoke contacts with 130 ~ 140 DEG C of the temperature of introducing, the free water quilt in desulfurated plaster A
Evaporation, the final moisture content that obtains are less than 2% desulfurated plaster B.
Preferably, using SDA（Drying process with atomizing）Semidry method absorption tower（Or semi-dry desulphurization tower）, SDA semidry methods
Gas residence time is not less than 10s in absorption tower, and particle diameter is not more than 100 μm after semi-dry desulphurization slurry spraying, sack cleaner
Exit gas temperature is not less than 100 DEG C.
Preferably, semidry method SDA desulfuration efficiencies are not less than 90%.
Preferably, wet absorption tower（Or wet desulfuration tower）Empty tower gas velocity about 3 ~ 4m/s, gas residence time are not less than
4s, particle diameter is not more than 2mm after wet desulphurization slurry atomization, and wet desulfuration tower flue gas exit temperature is not less than 50 DEG C.
Preferably, desulfuration efficiency is not less than 95%.
Preferably, between dry desulfurization concentration of slurry 20 ~ 30%, between wet desulphurization slurry solid content 15 ~ 30%.
Preferably, when making desulfurizing agent with lime, CaO content is not less than 85% in lime, and Particle size requirements 90% cross 325 mesh.
Preferably, when making desulfurizing agent with lime stone, CaCO in lime stone3Content is not less than 90%, and Particle size requirements 90% cross 325
Mesh.
It is described in detail below in conjunction with integrated artistic of the present utility model and device：
Step 1：Temperature, by adjusting sintering machine wind box, makes the flue gas that sulfur content is high in 120 ~ 160 DEG C of sintering device flue gas
Into high-sulfur section flue, the low flue gas of sulfur content enters low-sulfur section flue.High-sulfur flue gas enters wet desulfurizing and dust collecting system；Low-sulfur
Flue gas is largely directly entered semi-dry desulphurization dust pelletizing system, and dry desulfurization is entered back into after first passing through rotary roller dryer on a small quantity
Dust pelletizing system.
Step 2a：Sintering machine high-sulfur section flue gas enters the first deduster, removes in flue gas after most of dust, into wet method
Absorption tower, and inversely contacted with the wet desulphurization slurry that spraying layer sprays, the CaCO in wet desulphurization slurry3With in flue gas
SO2Reaction generation calcium sulfite, oxygen of the calcium sulfite in the air that desulfurization slurry area bottom and oxidation unit blast occur
Reaction generation calcium sulfate precipitation；Flue gas after being contacted with desulfurization slurry is laggard through multi-stage demister removing most of droplet therein
Enter the air inlet pipe of chimney.
Step 2b：Sintering machine low-sulfur section flue gas enters SDA semidry methods absorption tower, is taken off with the semidry method that atomizer sprays
Sulphur slurry liquid contacts are simultaneously sufficiently mixed, the SO in flue gas2By the Ca (OH) in semi-dry desulphurization slurries2Or CaCO3With in flue gas
SO2Reaction generation calcium sulfite, and enter the first slurry pool together with unreacted desulfurizing agent；Flue gas passes through the second deduster again
Enter the air inlet pipe of chimney after purification, mixed with the wet flue gas from wet desulfurizing and dust collecting system, wherein after wet method sulphur removing and dust removing
Neat stress under the heat effect of neat stress, wherein remaining droplet is gasified, thoroughly solves flue gas folder after semi-dry desulphurization dedusting
The problem of band water smoke.The semi-dry desulphurization ash that SDA semidry methods absorption tower ash hole is collected with sack cleaner enters pulping system.
Step 3：Wet desulfuration tower forces the desulfurization slurry after oxidation after cyclone classification, and top stream slurries return wet absorption
Tower or slurry pool recycle；Bottom slurry produces desulfurated plaster A and filtrate after entering belt filter press filtering, and filtrate goes back to plant area
Wastewater treatment center is uniformly processed, and can also return sintering machine and recycle；Moisture content 10 ~ 20% desulfurated plaster A through utilizing low-sulfur
The desulfurated plaster B that moisture content is not higher than 1% is generated after the rotary roller dryer processing of section flue gas, desulfurated plaster B can be direct
It is used as cement retarder or makes plaster of Paris etc..
Obvious above-mentioned steps 2, i.e. step 2a and step 2b have no point of sequencing, below in step 2a and step 2b
Slurries flowing explained in more detail：
Slurry pool includes the first slurry pool and the second slurry pool, is so more beneficial for recycling for slurries.From SDA half
Dry desulfurization dust pelletizing system（Semidry method absorption tower and the second deduster）Semi-dry desulphurization ash main component be CaCO3, sulfurous
Sour calcium, calcium sulfate etc., semi-dry desulphurization ash enters the first slurry pool, and is mixedly configured into wet desulphurization slurry with process water, wet
Method desulfurization slurry enters the desulfurization slurry area of wet absorption tower bottom through pump and pipeline, carries out wet desulphurization.The slurry of wet desulphurization
The top that liquid is pumped to wet absorption tower from wet absorption tower desulfurization slurry area is sprayed through spraying layer, and desulfurization slurry is fallen into after desulfurization
Area, desulfurization slurry area are also connected with cyclone, carry out classification processing for the more slurries of solid, the top stream slurries of cyclone return
To desulfurization slurry area, bottom slurry obtains gypsum and filtrate after press filtration.
Lime/lime stone is mixedly configured into dry desulfurization slurries with process water in the second slurry pool, and pump and pipeline are defeated
Deliver to atomizer；First slurry pool and the second slurry pool realize slurries wet desulphurization slurry and dry desulfurization slurries phase by pump group
Mutually circulation, when wet desulphurization slurry deficiency, dry desulfurization slurries can be supplemented by pump group；When wet desulphurization slurry excess,
The second slurry pool can be transported to by pump group to mix with dry desulfurization slurries.
The beneficial effects of the utility model are：
（1）It is combined using semi-dry desulphurization and wet desulphurization, semi-dry desulphurization ash is used for wet desulphurization, effectively solved
Semi-dry desulphurization ash of having determined is difficult to handling problems.
（2）Using low-sulfur section flue gas drying desulfurated plaster, high-quality desulfurated plaster is obtained, improves by-product utilized value.
（3）Using the wet flue gas that the dry flue gas heating of cleaning is clean, fundamentally solve the problems, such as that flue gas carries water smoke secretly.
（4）For existing semidry method or wet desulfurizing process, convenient technological transformation, the row for improving flue gas can be carried out
Put standard.
Brief description of the drawings
Fig. 1 represents the connection figure of the device of the utility model embodiment 1.
In figure, 1-sintering machine；1-1-bellows；1-2-low-sulfur section flue；1-3-high-sulfur section flue；2-the first dedusting
Device；3-wet absorption tower；3-1-wet absorption tower flue gas entrance；3-2-desulfurization slurry area；3-3-oxidation unit；3-4—
Agitator；3-5-circulating pump；3-6-spraying layer；3-7-demister；3-8-wet absorption tower flue gas outlet；4-revolution rolling
Drum drier；5-semidry method absorption tower；5-1-semidry method adsorption tower smoke entrance；5-2-ash hole；5-3-semidry method is inhaled
Receive tower flue gas outlet；5-4-atomizer；6-the second deduster；7-the first slurry pool；8-pump group；9-the second slurry pool；
10-cyclone；11-belt filter press；12-chimney；Arrow represents the flow direction of material.
Embodiment
With reference to embodiment, the utility model is described in further detail.
Embodiment 1
The specific device that the present embodiment provides is as shown in figure 1, with reference to technical process of the present utility model and attached
Fig. 1 schematic device is further explained.
The bellows 1-1 of sintering machine 1 is adjusted, the high flue gas of sulfur content is entered high-sulfur section flue 1-3, the low flue gas of sulfur content
Into low-sulfur section flue 1-2.
High-sulfur section flue 1-3 flue gas enters the first deduster 4, and the first deduster 4 is electric cleaner, and dust is fine coal
Ash, can be as the raw material of cement；Flue gas after the processing of the first deduster 4 is entered by wet absorption tower flue gas entrance 3-1
Enter wet absorption tower 3.The primary structure of wet absorption tower 3 includes from the bottom to top：Desulfurization slurry area 3-2, oxidation unit 3-3, stir
Device 3-4, wet absorption tower flue gas entrance 3-1, circulating pump 3-5, spraying layer 3-6, demister 3-7, wet absorption tower flue gas is mixed to go out
Mouth 3-8.Flue gas flows from bottom to top, and desulfurization slurry body sprays from the top down, fully absorbs；Then go out droplet, inhaled by wet method
Receive tower flue gas outlet 3-8 discharges.
Low-sulfur section flue 1-2 flue gas enters semidry method absorption tower 5 by semidry method adsorption tower smoke entrance 5-1, with atomization
Semi-dry desulphurization slurry liquid contacts that device 5-4 is sprayed simultaneously are sufficiently mixed, the SO in flue gas2By the Ca in semi-dry desulphurization slurries
(OH)2Or CaCO3With the SO in flue gas2Reaction generation calcium sulfite, and entered together with unreacted desulfurizing agent by ash hole 5-2
Enter the first slurry pool 7；Flue gas semidry method adsorption tower smoke outlet 5-3 escapes and enter the second deduster 6, and the flue gas after purification enters
Enter the air inlet pipe of chimney 12, mixed with the wet flue gas from wet desulfurizing and dust collecting system, wherein neat stress after wet method sulphur removing and dust removing
After dry desulfurization dedusting under the heat effect of neat stress, wherein remaining droplet is gasified, flue gas entrainment water smoke is thoroughly solved and asks
Topic.The semi-dry desulphurization ash that dry method absorption tower ash hole is collected with sack cleaner enters pulping system.Second deduster 6 is discharged
Dust enter the first slurry pool 7 together with ash hole 5-2 Desulphurization.
Fraction flue gas in low-sulfur section flue 1-2 first passes through rotary roller dryer 4, for drying desulfurized gypsum；So
Enter semidry method absorption tower 5 together with other low-sulfur section flue 1-2 flue gas again afterwards.
First slurry pool 7 is adjusted by adding process water can be used as the slurries of wet desulphurization after the concentration of slurries, and first
Slurry pool 7 is also connected with the second slurry pool 9 by pump group 8, is made in the second slurry pool 9 after adding technology water and lime/lime stone
For the slurries of semi-dry desulphurization.
The desulfurization slurry area 3-2 of wet absorption tower 3 is connected with cyclone 10, for slurries to be classified, obtains top stream slurries
And bottom slurry, top stream serum recycle utilize, for wet desulphurization, bottom slurry obtains filtrate after being dehydrated by belt filter press 11
And desulfurated plaster, filtrate are higher, it is necessary to dry into rotary roller dryer 4 due to moisture content as wastewater treatment, desulfurated plaster
Dry dehydration.
As can be seen that this set of device and the effect of technique desulfurization and dedusting are very good, solve the problems, such as band water in flue gas,
A large amount of generations of accessory substance Desulphurization are turn avoid, only a small amount of filtrate is arranged as outside waste water.
Embodiment 2
From sintering device flue gas, the m of low-sulfur section exhaust gas volumn 1,080,0003/ h, SO2Concentration 248mg/Nm3, 140 DEG C of flue-gas temperature；It is high
The m of sulphur section exhaust gas volumn 1,080,0003/ h, SO2Concentration 1300mg/Nm3, 140 DEG C of flue-gas temperature, at the desulfation dust-extraction device through embodiment 1
After reason, smoke stack emission mixed flue gas SO2Concentration 78mg/Nm3, dust concentration 15mg/Nm3, 80 DEG C of flue-gas temperature, flue gas is without water smoke
And water smoke entrainment SO3Escape.
Embodiment 3
From sintering device flue gas, the m of low-sulfur section exhaust gas volumn 1,080,0003/ h, SO2Concentration 258mg/Nm3, 138 DEG C of flue-gas temperature；It is high
The m of sulphur section exhaust gas volumn 1,080,0003/ h, SO2Concentration 1400mg/Nm3, 138 DEG C of flue-gas temperature, at the desulfation dust-extraction device through embodiment 1
After reason, smoke stack emission mixed flue gas SO2Concentration 64mg/Nm3, dust concentration 14mg/Nm3, 78 DEG C of flue-gas temperature, flue gas is without water smoke
And water smoke entrainment SO3Escape.
Embodiment 4
From sintering device flue gas, the m of low-sulfur section exhaust gas volumn 1,080,0003/ h, SO2Concentration 300mg/Nm3, 140 DEG C of flue-gas temperature；It is high
Sulphur section exhaust gas volumn 1,080,000 m3/h, SO2Concentration 1300mg/Nm3, 138 DEG C of flue-gas temperature, at the desulfation dust-extraction device through embodiment 1
After reason, smoke stack emission mixed flue gas SO2Concentration 58mg/Nm3, dust concentration 14mg/Nm3, 82 DEG C of flue-gas temperature, flue gas is without water smoke
And water smoke entrainment SO3Escape.
Preferable implementation example of the present utility model is these are only, is not limited to the utility model, it is all new in this practicality
Within type spirit and principle, any modification, equivalent substitution and improvements made etc., protection model of the present utility model should be included in
Within enclosing.
Claims (10)
1. a kind of flue gas of sintering machine dust arrester, including sintering machine, deduster, absorption tower and slurry pool, it is characterised in that
Deduster includes the first deduster and the second deduster, and absorption tower includes wet absorption tower and semidry method absorption tower；Sintering machine leads to
Cross flue to be connected with semidry method absorption tower and wet absorption tower respectively, removed between sintering machine and wet absorption tower provided with first
Dirt device, the exhanst gas outlet on semidry method absorption tower are connected with the second deduster, the outlet pipe and wet absorption tower of the second deduster
Outlet pipe be connected with the air inlet pipe of chimney；Second deduster, wet absorption tower and semidry method absorption tower are and slurry pool
It is connected.
2. desulfurating dust removing device for flue gas as claimed in claim 1, it is characterised in that slurry pool includes the first slurry being interconnected
Liquid pool and the second slurry pool, the first slurry pool are connected by pipeline with wet absorption tower, the second slurry pool by pipeline with it is half-dried
Method absorption tower is connected.
3. desulfurating dust removing device for flue gas as claimed in claim 1, it is characterised in that wet absorption tower is connected with each other with cyclone
Circulation is formed, cyclone bottom is also connected with filter press.
4. desulfurating dust removing device for flue gas as claimed in claim 3, it is characterised in that the bottom of the wet absorption tower is desulfurization
Slurries area, cyclone pass through pump and pipeline communication with desulfurization slurry area.
5. desulfurating dust removing device for flue gas as claimed in claim 3, it is characterised in that filter press is connected with roller drier.
6. desulfurating dust removing device for flue gas as claimed in claim 5, it is characterised in that the sintering machine also by flue with
Roller drier is connected.
7. desulfurating dust removing device for flue gas as claimed in claim 1, it is characterised in that the first deduster is electric cleaner；Second
Deduster is sack cleaner.
8. desulfurating dust removing device for flue gas as claimed in claim 1, it is characterised in that the smoke inlet position of the wet absorption tower
In absorption tower bottom, the exhanst gas outlet of wet absorption tower is located at the top of absorption tower.
9. desulfurating dust removing device for flue gas as claimed in claim 8, it is characterised in that the wet absorption tower also includes spraying layer
And demister, demister are located between spraying layer and the exhanst gas outlet of wet absorption tower.
10. desulfurating dust removing device for flue gas as claimed in claim 1, it is characterised in that the bottom of the wet absorption tower is also set
There are oxidation unit and agitating device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720432089.8U CN206701068U (en) | 2017-04-24 | 2017-04-24 | A kind of flue gas of sintering machine dust arrester |
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| CN201720432089.8U CN206701068U (en) | 2017-04-24 | 2017-04-24 | A kind of flue gas of sintering machine dust arrester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108970355A (en) * | 2018-09-06 | 2018-12-11 | 大唐环境产业集团股份有限公司 | A kind of wet-dry change coupling smoke processing system and method |
| CN109351156A (en) * | 2018-11-20 | 2019-02-19 | 东方电气集团东方锅炉股份有限公司 | A kind of the removing system and removal methods of cement kiln tail gas sulphur dioxide |
| CN109647173A (en) * | 2018-12-28 | 2019-04-19 | 浙江天蓝环保技术股份有限公司 | A kind of SO of semidry method-wet process serial2Flue gas desulfurization technique and device |
-
2017
- 2017-04-24 CN CN201720432089.8U patent/CN206701068U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108970355A (en) * | 2018-09-06 | 2018-12-11 | 大唐环境产业集团股份有限公司 | A kind of wet-dry change coupling smoke processing system and method |
| CN109351156A (en) * | 2018-11-20 | 2019-02-19 | 东方电气集团东方锅炉股份有限公司 | A kind of the removing system and removal methods of cement kiln tail gas sulphur dioxide |
| CN109351156B (en) * | 2018-11-20 | 2024-02-02 | 东方电气集团东方锅炉股份有限公司 | System and method for removing sulfur dioxide in tail gas of cement kiln |
| CN109647173A (en) * | 2018-12-28 | 2019-04-19 | 浙江天蓝环保技术股份有限公司 | A kind of SO of semidry method-wet process serial2Flue gas desulfurization technique and device |
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