CN1003161B - Catalytic desulfurizing agent for flue gas and its method of preparation - Google Patents
Catalytic desulfurizing agent for flue gas and its method of preparation Download PDFInfo
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- CN1003161B CN1003161B CN85104062A CN85104062A CN1003161B CN 1003161 B CN1003161 B CN 1003161B CN 85104062 A CN85104062 A CN 85104062A CN 85104062 A CN85104062 A CN 85104062A CN 1003161 B CN1003161 B CN 1003161B
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- Prior art keywords
- desulfurizing agent
- fume
- standby
- mud
- present
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 5
- 230000003009 desulfurizing effect Effects 0.000 title claims description 34
- 230000003197 catalytic effect Effects 0.000 title abstract 3
- 238000000034 method Methods 0.000 title description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title description 8
- 239000003546 flue gas Substances 0.000 title description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000003517 fume Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 239000002893 slag Substances 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 239000011148 porous material Substances 0.000 claims abstract description 7
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 5
- 238000001354 calcination Methods 0.000 claims abstract description 5
- 239000002440 industrial waste Substances 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 5
- 235000013312 flour Nutrition 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 235000019504 cigarettes Nutrition 0.000 claims description 17
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 claims description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 239000011573 trace mineral Substances 0.000 claims description 3
- 235000013619 trace mineral Nutrition 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052788 barium Inorganic materials 0.000 claims description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 12
- 238000006477 desulfuration reaction Methods 0.000 abstract description 9
- 230000023556 desulfurization Effects 0.000 abstract description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 7
- 229910052717 sulfur Inorganic materials 0.000 abstract description 6
- 239000011593 sulfur Substances 0.000 abstract description 6
- 238000000227 grinding Methods 0.000 abstract description 3
- 235000013339 cereals Nutrition 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- 239000000969 carrier Substances 0.000 abstract 1
- 150000001879 copper Chemical class 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 230000008929 regeneration Effects 0.000 description 14
- 238000011069 regeneration method Methods 0.000 description 14
- 239000007789 gas Substances 0.000 description 12
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 241001269238 Data Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001139 Telluric iron Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- -1 add CaCO Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 150000001341 alkaline earth metal compounds Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- NFMAZVUSKIJEIH-UHFFFAOYSA-N bis(sulfanylidene)iron Chemical compound S=[Fe]=S NFMAZVUSKIJEIH-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000019635 sulfation Effects 0.000 description 1
- 238000005670 sulfation reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention belongs to the fields of chemical separation technology and environmental protection, and relates to a fume catalytic desulfurization agent and a preparation method thereof. The present invention uses cheap industrial waste materials, such as slag containing iron, fume mud, etc., as a principal raw material, and activated carbon or grain flour and ammonia water as a pore forming agent, and the fume catalytic desulfurization agent can be manufactured by that the fume mud and the slag containing iron are mixed, a right amount of water and a little pore forming agent is added, and the operation of grinding to a paste stage, extruding into a bar shape, drying and calcining is implemented without carriers. Thus, the raw materials of copper series and an activated carbon desulfurization agent which are expensive and are lack of resources so that the present invention has the advantages of low cost, good regenerability, sulfur resource recovery, no secondary pollution and obvious social benefit and economical benefit, and can remove the sulfur dioxide of more than 90% in fumes.
Description
The present invention is a kind of desulfurizing agent based on iron oxide, is mainly used in and removes sulfur in smoke.
Sulfur dioxide is a kind of atmosphere pollution, and it has become when last grand duke's evil.Remove at present the sulfur dioxide in the waste gas both at home and abroad, mostly adopt solid sorbent or solution absorbent.Dry removal sulfur dioxide in flue gas desulfurizer therefor is mainly activated carbon desulphurization agent and adds the iodine activated carbon desulphurization agent.Shortcoming be cost an arm and a leg, Sulfur capacity is low, regeneration is frequent, complex technical process, reclaim the sulphur resource and need consume a large amount of energy.Equally also there is above-mentioned some shortcoming with the solution absorbent.Metal oxide is done dry-desulphurizer and still is in the stage of conducting a research.
A kind ofly be used to remove SO according to what U.S. Pat 4201751 reported
2The dry-desulphurizer of gas, raw materials used except that steel mill's dust, also must add the alkalies and alkaline earth compound, purpose is the alkalescence that increases desulfurizing agent, improves desulphurizing ability.And to use materials such as wood chip, wood powder, expanded perlite as carrier, active material is dispersed on the carrier.Adsorbed SO
2Desulfurizing agent when regeneration owing to generated CaSO
4In alkalies and alkaline earth sulfate.Improved the decomposition temperature of thermal regeneration, as used organic solvent extraction, then the iron oxide in the desulfurizing agent changes into iron hydroxide (Fe(OH) earlier
3).And then changing into iron oxide to obtain regeneration, the shortcoming of this method is that the making and the regeneration technology of desulfurizing agent is all complicated, the cost height.
The dry-desulphurizer that is proposed in U.S. Pat 4478803 is to adopt metallic iron, magnetic iron ore (Fe
3O
4), pyrite (FeS
2) and the smart stone (Fe of iron
2O
3) and composition thereof be raw material, in reducing atmosphere SO
2Be reduced into FeS, thereby make the SO in cigarette (giving up) gas
2From gas phase, separate, become solid-state FeS
2, FeS, reach the purpose of desulfurization.For this reason, must add reducibility gas simultaneously in the sweetening process.Point out in the literary composition that this reducibility gas is carbon monoxide (CO) or hydrogen (H
2).Owing to contain a certain amount of oxygen (O usually in cigarette (giving up) gas
2), it will destroy reduction process, also must remove in advance.Point out in the literary composition that deoxidation has in the presence of the coke at 600～750 ℃ and carry out.Its desulphurization reaction is as follows:
Fe+SO
2+2CO/FeS+2CO
2
Fo
3O
4+3SO
2+10CO/3FeS+10CO
2
FeS+SO
2+2CO/FeS
2+2CO
2
Preferably 400～500 ℃ of desulfurization temperatures.CO not reacted in the gas phase also needs row to remove because of poisonous again, can enter atmosphere to gas.
From the above mentioned as seen, this method is owing to remove SO
2And first deoxidation, desulfurization (SO in reducibility gas have again been caused
2), remove CO at last again, complex technical process, investment and operating cost are all high.
Japan patent of invention JP-(A)-55-84537 proposes to remove with iron ore the method for sulfur dioxide.This method adopts the native iron ore (to contain Fe
2O
394.8%) be main material, add CaCO, Ca(OH) as auxiliary material, be crushed to 50 orders～300 orders together, it is heavy to add 2～10%(then) binding agent, add suitable quantity of water mixing after, in 30-150 ℃ of drying, make desulfurizing agent in 1200～1350 ℃ of calcinings, at high temperature can remove SO
2This method has the better simply advantage of sweetening process.But important disadvantages is that desulfurizing agent manufacturing process energy consumption is too big, must pulverize 50～300 orders to hard iron ore, needs to consume a large amount of electric energy.Simultaneously, desulfurizing agent up to 1200 ℃～1350 ℃ of following calcination, not only energy consumption is too big, and high temperature makes the desulfurizing agent sintering easily, reduces or loses activity.In addition, in composition of raw materials, owing to add auxiliary material CaCO
3And Ca(OH)
2, not only improved the desulfurizing agent cost, the difficulty in the time of can also causing regeneration.
Above-mentioned three kinds of sulfur methods though all be to be raw material with the iron compound, all exist defective separately.The present invention has overcome above-mentioned defective in varying degrees, adopting the slag of industrial waste iron content and the cigarette mud (hereinafter to be referred as cigarette mud) of iron content is raw material, except that pore creating material, need not add other chemical substances such as alkali metal and alkaline earth metal compound, also need not use carrier, manufacturing process is simple, and raw material granularity is thin, energy consumption is low, and product cost is low.Desulfurizing agent function admirable of the present invention, easy to use.Under rated condition, make to contain SO
2Flue gas (industrial waste gas) directly contact with desulfurizing agent, just can make SO wherein
2Remove, speed is fast, efficient is high.As desulfurizing agent sorption SO
2After generating sulfate, can make desulfurizing agent obtain regeneration by the method for heating.Recover that it is desulphurizing activated, the regeneration condition gentleness.The oxysulfide that discharges can be recycled, non-secondary pollution.Use desulfurizing agent of the present invention will obtain tangible environmental benefit and economic benefit.
Fume desulfurizing agent of the present invention is characterized in that being is raw material with industrial waste iron content cigarette mud and troilite slag, with active carbon or flour, ammoniacal liquor as pore creating material.The cigarette mud of described fume desulfurizing agent and troilite slag ingredients by weight are than being cigarette mud 70～95%.Troilite slag 5～30%.The addition of pore creating material generally is 1～5% of an above-mentioned primary raw material weight.The fume desulfurizing agent that is made into.Its content of forming the maintenance di-iron trioxide is not less than 50% of gross weight, and calcium oxide content is 5～25%, and aluminium oxide, magnesian content all are no more than 10%, and all the other are trace element and acid non-soluble substance.
Best group becomes:
Di-iron trioxide 60～70%
Aluminium oxide 2～3%
Calcium oxide 10～20%
Magnesia 2～4%
Trace element lead, barium, nickel, manganese etc., its content is 0.003～0.4%.All the other are acid non-soluble substance.
The fume desulfurizing agent of making by said ratio is in 350～450 ℃ of temperature ranges, to SO in the flue gas
2Removal efficiency can reach more than 90%.
Preparation process of the present invention is as follows:
Get cigarette mud, airing or low temperature is oven dry down, crosses 100 mesh sieves, stand-by as raw material placement compass screen surface under.Cigarette mud on the compass screen surface advances grinding mill mills and took out in 2 hours, crosses 100 mesh sieves.Particulate below the sieve and that obtain for the first time merges, and on the compass screen surface as still have a large amount of thick cigarette mud then to advance grinding mill again to mill 1 hour, the cigarette mud that takes out in a word made 80～90% or more 100 mesh sieves standby.All the other coarse grain still grind with next cigarette mud, cross 100 mesh sieves, give over to the usefulness of batching next time.
Other gets troilite slag (ash), surveys pH, when pH is suitable 2～3, as pH＞7, then drips a little mixing of dilute sulfuric acid, and pH is reached till the requirement.It is standby that this slag (ash) is crossed 100 mesh sieves.
Get 70～95% standby cigarette mud of described fume desulfurizing agent main material gross weight.5～30% standby troilite slag (ash) mixes, and adds suitable quantity of water, the flour of 1～5% weight, and ammoniacal liquor or active carbon powder are put in the roller and are milled, and take out when material reaches paste in the roller.Extruded moulding in make-up machine dried by the fire 2-5 hour down in 105～120 ℃, after the taking-up cooling, was placed in the incinerator again and can obtains required fume desulfurizing agent in 500～650 ℃ of calcination 2-4 hours.
The fume desulfurizing agent performance shows through actual measurement, is SO in gas composition
20.5～2%, H
2O6～9%, CO
20～10%, air speed is 200～500 o'clock
-1, on 30～80 purpose desulfurizing agents, carrying out the gas desulfurization in the time of 400 ℃, desulfurization degree can reach more than 90%, and the sulfur capacity that per 100 gram desulfurizing agents can reach each time is greater than 30 grams.
After described fume desulfurizing agent sulfation, can be in hot-air desorption and regeneration, a Sulfur capacity of the desulfurizing agent after the regeneration is still more than 30 grams.The oxysulfide of emitting during regeneration can be used as the raw material of making sulfuric acid, sulphur, sulfur dioxide liquid, thereby has improved the economic benefit of described fume desulfurizing agent.
Following table is eight desulfurization regeneration loop-around datas of described fume desulfurizing agent.(use DTG analytical unit weight fume desulfurizing agent to SO
2Absorption weightening finish and desorption and regeneration situation)
The fume desulfurizing agent power of regeneration is measured table
Claims (2)
1, fume desulfurizing agent of the present invention, its best group becomes: di-iron trioxide is 60～70%, aluminium oxide is 2-3%, calcium oxide is 10-20%, and magnesia is 2-4%, and trace element lead, barium, nickel, manganese etc. are 0.003-0.4%, all the other are acid non-soluble substance, it is characterized in that being is raw material with industrial waste troilite slag and iron content cigarette mud (hereinafter to be referred as cigarette mud), is pore creating material with active carbon or flour, ammoniacal liquor, and the pore creating material addition is the 1-5% of above-mentioned primary raw material weight.
2, the preparation method of the described desulfurizing agent of claim 1 is characterized in that: gets oven dry under cigarette mud airing or the low temperature, makes above 100 mesh sieves of crossing of 80-90%, and standby; Other gets troilite slag (ash) and surveys pH, when pH is suitable in the 2-3 scope, it is standby that this slag (ash) is crossed 100 mesh sieves, then, getting the standby cigarette mud of 70-95% mixes with the standby troilite slag (ash) of 5-30%, add suitable quantity of water, add hundred powder, ammoniacal liquor or the active carbon powder of stating main material 1-5% weight, put in the roller and mill, when reaching paste, takes out material, extruded moulding, baking is 2-5 hour under 105-120 ℃, is placed on after the taking-up cooling to calcine under 500-650 ℃ in the calcining furnace can obtain fume desulfurizing agent of the present invention in 2-4 hour again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85104062A CN1003161B (en) | 1985-05-22 | 1985-05-22 | Catalytic desulfurizing agent for flue gas and its method of preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85104062A CN1003161B (en) | 1985-05-22 | 1985-05-22 | Catalytic desulfurizing agent for flue gas and its method of preparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85104062A CN85104062A (en) | 1986-07-16 |
| CN1003161B true CN1003161B (en) | 1989-02-01 |
Family
ID=4793609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85104062A Expired CN1003161B (en) | 1985-05-22 | 1985-05-22 | Catalytic desulfurizing agent for flue gas and its method of preparation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1003161B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101718C (en) * | 2000-06-16 | 2003-02-19 | 刘同生 | Wet catalytic fume desulfurizing method and equipment |
| CN1122559C (en) * | 2000-07-11 | 2003-10-01 | 史汉祥 | Method for processing SO2 containing fume |
| CN101134918B (en) * | 2006-08-28 | 2012-03-21 | 北京三聚环保新材料股份有限公司 | Desulfurizer active component having high sulfur-content and preparation method thereof |
| CN103272474B (en) * | 2013-06-19 | 2015-05-20 | 河南省科学院能源研究所有限公司 | Combustion desulphurization agent for furfural residue |
| CN103521177A (en) * | 2013-08-30 | 2014-01-22 | 蚌埠凤凰滤清器有限责任公司 | Carbonized flour modified active carbon adsorbent and preparation method thereof |
| CN103521176A (en) * | 2013-08-30 | 2014-01-22 | 蚌埠德美过滤技术有限公司 | Modified activated carbon hydrogen sulfide adsorbent and preparation method thereof |
| CN104437366A (en) * | 2014-11-13 | 2015-03-25 | 安徽凤凰滤清器股份有限公司 | Uneasily-disintegrated mixed active carbon desulfurizing agent and preparation method thereof |
| CN105013444B (en) * | 2015-06-23 | 2017-06-20 | 濮阳市联众兴业化工有限公司 | A kind of preparation method of solid desulfurating agent |
| CN108745282B (en) * | 2018-05-25 | 2020-12-11 | 武汉钢铁有限公司 | Metallurgical solid waste-based formed activated carbon for flue gas desulfurization and denitrification and preparation method thereof |
| CN111185189A (en) * | 2020-01-16 | 2020-05-22 | 中国重型机械研究院股份公司 | Method for preparing yolk-egg white type SCR denitration catalyst and application |
| CN112973735B (en) * | 2021-03-09 | 2021-12-21 | 山东大学 | A kind of sulfur dioxide catalytic reduction self-sulfide catalyst and preparation method thereof |
-
1985
- 1985-05-22 CN CN85104062A patent/CN1003161B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85104062A (en) | 1986-07-16 |
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