CN107754588A - Remove composition and its application of the sulfur dioxide in flue gas - Google Patents
Remove composition and its application of the sulfur dioxide in flue gas Download PDFInfo
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- CN107754588A CN107754588A CN201711064377.3A CN201711064377A CN107754588A CN 107754588 A CN107754588 A CN 107754588A CN 201711064377 A CN201711064377 A CN 201711064377A CN 107754588 A CN107754588 A CN 107754588A
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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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- 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
Abstract
The invention discloses a kind of composition for removing the sulfur dioxide in flue gas and its application.The composition of the present invention includes following component：30~60 parts by weight magnesia, 20~50 parts by weight red muds and 20~50 parts by weight carbide slags.The composition of the present invention can improve flue gas desulfurization effect, and can make full use of industrial residue red mud and carbide slag.The composition of the present invention is used for into binder materials production can solve the problem that recycles of industrial solid wastes, and can obtain the binder materials product that cost is relatively low, up-to-standard.
Description
Technical field
The present invention relates to a kind of composition for removing the sulfur dioxide in flue gas and its application, more particularly to said composition
Application in binder materials is produced.
Background technology
In flue gas desulfurization course, the selection of desulfurizing agent is an important factor for influenceing desulfuration efficiency, and for the choosing of desulfurizing agent
With not only considering its desulfuration efficiency, also to take into account principle cheap and easy to get.For traditional Ca base desulfurizers, desulfurization product
CaSO4Solubility it is relatively low, after saturated crystallization easily block pipeline, influence the stable operation of desulphurization system.Accessory substance gypsum is a large amount of
Accumulation, easily causes secondary pollution.Mg base desulfurization technologies, because it has simple system, reduced investment, is not easy structure and byproduct profit
With relatively high advantage is worth, at home and abroad it is widely applied in recent years.
In order to improve desulfuration efficiency and reduce desulphurization cost, increasing researcher consider using trade waste as
A kind of desulfurizing agent uses, and so not only meets above-mentioned condition, while solve the processing of fraction solids discarded object, real meaning
On realize the secondary use of waste.
CN202146708U discloses a kind of flue gas desulphurization system, and the flue gas desulphurization system is included along flow of flue gas direction
Flue gas washing section, absorber portion, the desulfuration solution trapping section set gradually.Which solve desulfurization present in existing desulphurization system
The a series of problems such as suspended impurity content height, system jams, the desulfurization degree of solution be low.CN103706237A discloses a kind of flue gas
Desulphurization system, including fume desulfurizing tower, the fume desulfurizing tower include tower body and the tower body inner chamber surrounded by tower body, and described
Fume desulfurizing tower is divided into washing section, absorber portion and exhausting section along flow of flue gas direction, and overcome needs in the prior art
The deficiency of desulfuration efficiency is improved by increasing bed stuffing height, improves desulfuration efficiency.
The content of the invention
It is an object of the present invention to provide a kind of composition for removing the sulfur dioxide in flue gas, it makes full use of work
Industry discarded object, thus cost is cheap, and desulfurized effect is good.
It is another object of the present invention to provide a kind of application of above-mentioned composition, and it is used to produce binder materials, from
And solve industrial solid wastes recycles problem.
Specifically, the present invention includes herein below.
According to an aspect of the present invention, a kind of composition for removing the sulfur dioxide in flue gas, it includes following component：
30~60 parts by weight magnesia, 20~50 parts by weight red muds and 20~50 parts by weight carbide slags.
According to the composition of the present invention, it is preferable that it includes following component：40~50 parts by weight magnesia, 30~35 weights
Measure part red mud and 30~35 parts by weight carbide slags.
According to the composition of the present invention, it is preferable that the composition is made up of following component：30~60 parts by weight aoxidize
Magnesium, 20~50 parts by weight red muds and 20~50 parts by weight carbide slags.
According to the composition of the present invention, it is preferable that the magnesia is selected from magnesite light burnt powder, dolomite light burnt powder and divided
Analyse at least one of pure zirconia magnesium；And the content of magnesia is distinguished in the magnesite light burnt powder and the dolomite light burnt powder
For 65wt%~85wt%.
According to another aspect of the present invention, there is provided application of the above-mentioned composition in binder materials is produced, including it is as follows
Step：
(1) composition is formed into slurries, and using the sulfur dioxide in the slurries wet absorption flue gas, so as to shape
Into desulfurizing byproduct；
(2) 25~50 parts by weight desulfurizing byproducts, 35~60 parts by weight industrial solid wastes and 5~20 parts by weight will be included
The raw material of magnesia is mixed to get binder materials.
Application according to the present invention, it is preferable that based on binder materials described in 100 parts by weight, desulfurizing byproduct is 30~45
Parts by weight, industrial solid wastes are 40~55 parts by weight, and magnesia is 6~15 parts by weight.
Application according to the present invention, it is preferable that before wet absorption, the sulfur dioxide in flue gas content 500~
10000mg/Nm3Between and oxygen content between 8vol%~20vol%.
Application according to the present invention, it is preferable that the industrial solid wastes are selected from grain slag, slag, flyash and building rubbish
One or more in rubbish powder.
Application according to the present invention, it is preferable that it is 1 that the industrial solid wastes, which are selected from weight ratio,:1~3 slag and powder
Coal ash.
Application according to the present invention, it is preferable that the flue gas comes from sintering machine, pelletizing or kiln.
The present invention makes full use of the industrial residues such as red mud, carbide slag, and is combined with magnesia, cheap so as to form cost
Flue gas desulfurization composition.The composition flue gas desulfurization effect of the present invention is higher.Above-mentioned composition is used to produce by the present invention to be gelled
Material, cheap, up-to-standard binder materials can be obtained.The application of the present invention can be understood as the production of binder materials
Method, it is a kind of collaborative scheme for integrating flue gas desulfurization and waste water, solid waste and administering, be particularly suitable for use in by sintering machine,
Accessory substance after the flue gas desulfurizations such as pelletizing, rotary kiln prepares binder materials.
Embodiment
With reference to specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to
This.
In the present invention, unless otherwise stated, " part " refers to the number based on weight.In addition, " % " refers to based on weight
The percentage of amount, unless otherwise mentioned.
<Composition>
The composition of the present invention refers to the composition for removing the sulfur dioxide in flue gas, that is, is used for flue gas desulfurization.This with
The difference of essence be present in coal desulfurization agent.Coal desulfurization agent is directly used in mixed way with fire coal, for formed in combustion process two
Sulfur oxide is removed.The composition of the present invention is then that the sulfur dioxide in flue gas is removed, and is not intended to limit which kind of source
Flue gas.Those skilled in the art never use for reference flue gas desulfurization composition of the formula of coal desulfurization agent for the present invention.
In addition, coal desulfurization agent generally uses in solid form, composition of the invention then generally uses in form of slurry.The present invention
Composition include magnesia, three kinds of compositions of red mud and carbide slag；Preferably, composition of the invention is by change magnesium, red mud and electricity
Three kinds of composition compositions of rock ballast.
In certain embodiments, red mud refers to that aluminium industry extracts the contaminative waste residue discharged during aluminum oxide, and it has
Strong basicity, and contain the components such as substantial amounts of ferriferous oxide, calcium oxide, aluminum oxide, silica.
In certain embodiments, carbide slag is carbide slag product caused by dry acetylene generation process.Carbide slag can be produced
The polished obtained granularity of thing is less than the finished product of 200 mesh.
In certain embodiments, magnesia is in magnesite light burnt powder, dolomite light burnt powder and analysis pure zirconia magnesium
At least one.Preferably, the content of magnesia is 65wt%~90wt% in magnesite light burnt powder and dolomite light burnt powder, more
It is preferred that 70wt%~80wt%.In certain embodiments, composition includes 30~60 parts by weight magnesia, 20~50 parts by weight
Red mud and 20~50 parts by weight carbide slags；For example, composition include 40~50 parts by weight magnesia, 30~35 parts by weight red muds and
30~35 parts by weight carbide slags.In other embodiments, composition is by 30~60 parts by weight magnesia, 20~50 parts by weight
Red mud and 20~50 parts by weight carbide slags composition；For example, by 40~50 parts by weight magnesia, 30~35 parts by weight red muds and 30~
35 parts by weight carbide slags form.The composition of the present invention can use conventional method to prepare.Such as by magnesia, red mud and electricity
Rock ballast is well mixed to obtain product.
<Using>
Above-mentioned composition is used to produce binder materials, specifically comprised the following steps：
(1) composition is formed into slurries, and using the sulfur dioxide in the slurries wet absorption flue gas, so as to shape
Into desulfurizing byproduct；
(2) 25~50 parts by weight desulfurizing byproducts, 35~60 parts by weight industrial solid wastes and 5~20 parts by weight will be included
The raw material of magnesia is mixed to get binder materials.
As described herein, " binder materials " (also known as " cementitious matter ") refers to after physics, chemical action, can become from slurry
Into firm Shi Zhuanti material.Binder materials can have certain machine with other cementing shots or the material of bulk so as to turn into
The integral material of tool intensity.Binder materials includes hydraulic cementing materials and on-hydraulic binder materials.
In step (1), " desulfurizing byproduct " refers to be formed using the sulfur dioxide in the slurries wet absorption flue gas
Absorption product, the product that then concentrated, crystallization, centrifugation and drying steps obtain." desulfurization " is not strictly limited to only remove
Can containing other in sulfur dioxide in flue gas, in addition to some other common acidic oxide of removing and common flue gas
The material for being oxidized or absorbing, such as mercury, dust.The granularity of drying steps products therefrom can be 30~70 mesh, preferably 40
~60 mesh, such as 50 mesh.Any means or mode known in the art, such as the mode of screening can be used, obtain the granularity model
The product enclosed.On the other hand, the moisture content of the product is below 1wt%, preferably below 0.5wt% under normal circumstances, more preferably
For 0.
Specifically, step of the invention (1) may include steps of：Pulping stage, flue gas desulfurization step, plasma discharge step
Suddenly, concentration step, crystallisation by cooling step, centrifugation step and drying steps.
In certain embodiments, pulping stage is included above-mentioned composition and water, such as waste water, so as to prepare slurry
Liquid.The example of waste water includes but is not limited to alkaline waste water and acid waste water.The pH of alkaline waste water is generally 8~12.Acid waste water
PH generally 1~7.The dosage of above-mentioned composition and waste water is not particularly limited, under normal circumstances above-mentioned composition and waste water
Weight ratio be 1:(8~10), such as 1:9.The sulfur dioxide that slurries are used in wet absorption flue gas.
In certain embodiments, flue gas desulfurization step includes making flue gas and slurry liquid contacts containing sulfur dioxide, to inhale
The sulfur dioxide received in flue gas forms corresponding absorption product.In certain embodiments, the sulfur dioxide in flue gas content
Can be in 500~10000mg/Nm3Between, preferably 1000~2500mg/Nm3Between.Oxygen content 8vol%~
Between 20vol%, preferably 9~18vol%, more preferably 12~18vol%.Flue gas is controlled in above range, Ke Yigai
Kind desulfurized effect, and obtain the desulfurizing byproduct of steady quality.In certain embodiments, the flue gas is from sintering machine, ball
One or more in group and kiln；The preferably flue gas of sintering machine.The absorption product containing sulfate that wet absorption obtains
After sulfate condenses, fallen into against the weight of itself in the serum recycle deposit groove in flue gas desulfurization device.
In certain embodiments, concentration step of the invention includes concentrating absorption product, to form enriched product.Example
Such as, absorption product is evaporated to concentration in triple effect evaporator.
In certain embodiments, crystallisation by cooling step of the invention includes carrying out crystallisation by cooling to enriched product, obtains
Crystallized product.Crystallisation by cooling temperature general control is at 25~35 DEG C, preferably 28~30 DEG C.The knot that the crystallisation step of the present invention obtains
The granularity of brilliant production die is more than 0.2mm, preferably greater than 0.3mm.The granularity of the present invention is determined (referring to GB/ using sieve method
T21524-2008)。
In certain embodiments, centrifugation step of the invention includes centrifuging crystalline product, is sunk with obtaining crystal
Form sediment.In order to ensure that centrifugation is abundant, centrifugal speed is controlled in 1500~2000rpm, preferably 1600~1800rpm.For interval
Formula is operated, and the centrifugation time per batch materials was controlled at 5~30 minutes, preferably 5~10 minutes.Operated for continous way, every batch
The centrifugation time of material was controlled at 10~30 minutes, preferably 10~15 minutes.
In certain embodiments, drying steps of the invention include drying crystal settling, to remove most of moisture.
The drying steps of the present invention can be carried out by way of being dried in vacuo or being passed through heating air.Drying temperature is 90~150
DEG C, preferably 100~130 DEG C, more preferably 110~120 DEG C；Drying pressure is 0.01~0.5MPa, preferably 0.05~
0.2MPa.By drying steps, the moisture of dried crystal is less than 1wt%, preferably smaller than 0.5wt%, more preferably small
In 0.1wt%.
In step (2), industrial solid wastes can selected from one kind in grain slag, slag, flyash, building waste powder or
It is a variety of；The preferably combination of the combination of the combination of grain slag and flyash, grain slag and slag or slag and building waste powder.In group
Close using in the case of two or more industrial solid wastes, the weight proportion between them is not particularly limited, as long as not shadow
The performance needed for binder materials, and the property according to different demands or industrial solid wastes in itself are rung, can be selected not
Industrial solid wastes with weight proportion combine, to realize different purposes.According to one embodiment of the invention, the work
It is 1 that industry solid waste, which is selected from weight proportion,:1~3 slag and flyash, such as 1:1、1:1.5 or 1:2 etc..In the present invention,
Flyash is the fine ash that catching is got off in the flue gas after coal combustion.Slag is the slag of steel-making discharge, is divided into according to the type of furnace and turning
Clinker, open hearth slag, electroslag.Grain slag is rapidly cooled down and formed for the blast furnace slag of molten condition is placed in water, thus different
In slag.Building waste powder is that the solid waste formed is crushed by raw material of building waste.
In the present invention, based on binder materials described in 100 parts by weight, desulfurizing byproduct is 25~50 parts by weight, Industrial Solid
Body waste is 35~60 parts by weight, and magnesia is 5~20 parts by weight.In certain embodiments, desulfurizing byproduct is 30~45
Parts by weight, solid waste are 40~55 parts by weight, and magnesia is 6~15 parts by weight.
The binder materials of the present invention can also include additive, and its dosage can be 0.5~5 parts by weight, and preferably 1~2
Parts by weight.Additive can be selected from silicon rubber, polyester fiber, glass fibre, phosphoric acid, dihydric phosphate, dibasic alkaliine, winestone
One or more in acid, tartrate or ATMP；Preferably dihydric phosphate or dibasic alkaliine.
Raw material comprising desulfurizing byproduct, industrial solid wastes and magnesia is mixed to get binder materials.The mixing
Any mixed media or mode known in the art can be used, as long as can be well mixed or reach as gelling material using both
Mixability needed for material.In certain embodiments, the mixing includes desulfurizing byproduct is put into mixing appearance first
In device, the process of industrial solid wastes, magnesia and optional additive is then put into required ratio.In some embodiment party
In case, the mixing includes industrial solid wastes are put into stainless steel first, is then put into desulfurization pair in required ratio
The process of product, magnesia and optional additive.In other embodiments, the mixing is included the desired amount of comprising de-
The raw materials such as sulphur accessory substance, industrial solid wastes, magnesia, optional additive are put into the process of stainless steel simultaneously.It is described mixed
The example for closing container includes, but are not limited to agitator, homogenizer, mixer etc..
In certain embodiments, the step of desulfurizing byproduct, industrial solid wastes and magnesia being mixed also includes grinding
Honed journey, the grinding can be carried out simultaneously during mixing, or individually be carried out.The example of grinding is included in material ball ratio for 1:
60~180min of controlled lapping under conditions of 9~11, preferably 80~100min, so as to obtain binder materials.Grinding can change
The combination property of kind binder materials.
" part " in following preparation example and embodiment represents parts by weight, unless specifically stated otherwise.Unless specifically stated otherwise, make below
Raw material, process conditions used in standby example and embodiment are described as follows：
- alkaline waste water：From chemical plant, its pH is about 10.
- flyash：Acid flyash (AFA), main component：50wt%SiO2, 25wt%Al2O3, 9wt%CaO)
- slag charge：Slag, main component：50wt%SiO2, 12wt%A12O3, 9wt%Fe2O3, 16wt%CaO.
- additive：Sodium dihydrogen phosphate.
The performance of the binder materials of following examples is measured using GB/T50448-2008.Wherein, density and water suction
Rate is 28d test result.
Embodiment 1~3：The present composition
Each composition is well mixed the composition 1~3 that the present invention is made by the composition shown according to the form below 1.
The composition of table 1, the present composition
| Sequence number | Magnesia | Red mud | Carbide slag |
| Composition 1 | 40 | 30 | 30 |
| Composition 2 | 60 | 20 | 20 |
| Composition 3 | 50 | 25 | 25 |
Application examples 1：The application 1 of the present composition
Composition 1 is added into alkaline waste water, and (weight of composition and alkaline waste water ratio is 1:9) slurries are made, and deliver to de-
In sulphur tower.The flue gas (oxygen content 18vt%) for coming from coal-burning boiler enters inside desulfurizing tower from the bottom of desulfurizing tower.Cigarette
Gas passes through three layers of absorption spraying layer in uphill process.The sulfur dioxide in the slurries absorption flue gas of spraying layer spray is absorbed, and
Fall into slurries circulating slot in tower.
The slurries of slurries circulating slot bottom are discharged after pH reaches 6.5~7.5 through excavationg pump in tower, are then fed into triple effect steaming
Send out in device, it is concentrated to obtain enriched product (temperature is 70 DEG C, density 1.4t/m3).The slurries on slurries circulating slot top in tower
Deliver to three layers of absorption spraying layer respectively by slurry circulating pump, the internal circulating load of three accounts for the 50vt% of output total amount.Triple effect evaporation
Enriched product after device concentration is admitted in cooler crystallizer, and production granularity is more than 0.2mm crystal grain, is then fed to centrifuge
In removing most of moisture is centrifuged, afterwards be sent into drying machine in be dried, formed desulfurizing byproduct.
By desulfurizing byproduct, slag, (specific surface area is about 500m2/ kg), flyash and additive stir, during stirring
Between be 30 minutes, that is, obtain binder materials.Flue gas desulfurization operating mode is as shown in table 2 below and table 3.
Table 2, Desulfurization parameter
| Sequence number | Project | Quantity | Unit |
| 1 | Inlet flue gas amount (operating mode) | 1038684 | m3/h |
| 2 | Entrance standard state exhaust gas volumn | 686588 | m3/h |
| 3 | Inlet temperature | 140 | ℃ |
| 4 | Sulfur dioxide entrance concentration | 2000 | mg/Nm3 |
| 5 | Entrance dust concentration | 120 | mg/Nm3 |
| 6 | Magnesium sulphur ratio | 1.05 | |
| 7 | Humidity of flue gas | 12 | Wt% |
Table 3, desulfurization emission behaviour
| Sequence number | Project | Quantity | Unit |
| 1 | Exiting flue gas amount (operating mode) | 755856 | m3/h |
| 2 | Export standard state exhaust gas volumn | 638850 | m3/h |
| 3 | Exhaust gas temperature | 50 | ℃ |
| 4 | Sulfur dioxide emissioning concentration | 43 | mg/Nm3 |
| 5 | Desulfuration efficiency | 98 | % |
| 6 | Export dust concentration | 10 | mg/Nm3 |
| 7 | The quantum of output of accessory substance | 3.2 | t/h |
Application examples 2：The application 2 of the present composition
Desulfurizing byproduct, slag (the specific surface area 500m that application examples 1 is obtained2/ kg), flyash, magnesia and add
Add agent to be well mixed, stir 30 minutes, obtain binder materials.Formula is referring to table 4.The performance test results are referring to table 5.
Table 4, cement formulation
| Specification | Desulfurizing byproduct | Slag | Flyash | Magnesia | Additive |
| kg | 40 | 25 | 25 | 9 | 1 |
Table 5, binder materials performance
Application examples 3：The application 3 of the composition of the present invention
Except the formula using table 6, remaining condition are identical with application examples 1.The performance test results are referring to table 7.
Table 6, cement formulation
| Specification | Desulfurizing byproduct | Slag | Flyash | Magnesia | Additive |
| kg | 30 | 20 | 30 | 18 | 2 |
Table 7, binder materials performance
The present invention is not limited to above-mentioned embodiment, in the case of without departing substantially from the substantive content of the present invention, this area skill
Any deformation, improvement, the replacement that art personnel are contemplated that each fall within the scope of the present invention.
Claims (10)
1. a kind of composition for removing the sulfur dioxide in flue gas, it is characterised in that it includes following component：30~60 parts by weight
Magnesia, 20~50 parts by weight red muds and 20~50 parts by weight carbide slags.
2. composition according to claim 1, it is characterised in that it includes following component：40~50 parts by weight magnesia,
30~35 parts by weight red muds and 30~35 parts by weight carbide slags.
3. composition according to claim 1, it is characterised in that the composition is made up of following component：30~60 weights
Measure part magnesia, 20~50 parts by weight red muds and 20~50 parts by weight carbide slags.
4. according to the composition described in any one of claims 1 to 3, it is characterised in that it is light-burned that the magnesia is selected from magnesite
At least one of powder, dolomite light burnt powder and analysis pure zirconia magnesium；And the magnesite light burnt powder and the dolomite are light-burned
The content of magnesia is respectively 65wt%~85wt% in powder.
5. application of the composition in binder materials is produced according to any one of Claims 1 to 4, it is characterised in that bag
Include following steps：
(1) composition is formed into slurries, and using the sulfur dioxide in the slurries wet absorption flue gas, it is de- so as to be formed
Sulphur accessory substance；
(2) 25~50 parts by weight desulfurizing byproducts, 35~60 parts by weight industrial solid wastes and the oxidation of 5~20 parts by weight will be included
The raw material of magnesium is mixed to get binder materials.
6. application according to claim 5, it is characterised in that based on binder materials, desulfurizing byproduct described in 100 parts by weight
For 30~45 parts by weight, industrial solid wastes are 40~55 parts by weight, and magnesia is 6~15 parts by weight.
7. application according to claim 5, it is characterised in that before wet absorption, the sulfur dioxide in flue gas contains
Amount is in 500~10000mg/Nm3Between and oxygen content between 8vol%~20vol%.
8. application according to claim 5, it is characterised in that the industrial solid wastes are selected from grain slag, slag, flyash
With the one or more in building waste powder.
9. application according to claim 5, it is characterised in that it is 1 that the industrial solid wastes, which are selected from weight ratio,:1~3
Slag and flyash.
10. according to the application described in any one of claim 5~9, it is characterised in that the flue gas from sintering machine, pelletizing or
Kiln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711064377.3A CN107754588A (en) | 2017-11-02 | 2017-11-02 | Remove composition and its application of the sulfur dioxide in flue gas |
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| CN201711064377.3A CN107754588A (en) | 2017-11-02 | 2017-11-02 | Remove composition and its application of the sulfur dioxide in flue gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113559821A (en) * | 2021-07-21 | 2021-10-29 | 上海国惠环境科技股份有限公司 | Method for removing sulfur dioxide in flue gas by adsorbing red mud and fly ash |
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| CN103055689A (en) * | 2013-01-09 | 2013-04-24 | 浙江大学 | Desulfurization absorption liquid capable of simultaneously stabilizing bivalent mercury |
| CN105817134A (en) * | 2015-01-07 | 2016-08-03 | 河北衡兴环保设备工程有限公司 | Chemical process wet-method desulphurization technology |
| CN105859166A (en) * | 2016-03-28 | 2016-08-17 | 北京中晶环境科技股份有限公司 | Modified magnesium oxysulfate cement for foaming and foam material thereof |
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| CN113559821A (en) * | 2021-07-21 | 2021-10-29 | 上海国惠环境科技股份有限公司 | Method for removing sulfur dioxide in flue gas by adsorbing red mud and fly ash |
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