CN1086959C - Flue gas desulfurizing agent and method - Google Patents
Flue gas desulfurizing agent and method Download PDFInfo
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- CN1086959C CN1086959C CN99121910A CN99121910A CN1086959C CN 1086959 C CN1086959 C CN 1086959C CN 99121910 A CN99121910 A CN 99121910A CN 99121910 A CN99121910 A CN 99121910A CN 1086959 C CN1086959 C CN 1086959C
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- desulfurizing agent
- flue gas
- carbide slag
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- ammonia still
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 35
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 32
- 239000003546 flue gas Substances 0.000 title claims description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 25
- 239000002893 slag Substances 0.000 claims abstract description 24
- 239000003517 fume Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 38
- 230000008569 process Effects 0.000 claims description 28
- 229910021529 ammonia Inorganic materials 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 7
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims 1
- 238000012216 screening Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000746 purification Methods 0.000 abstract description 2
- 239000010802 sludge Substances 0.000 abstract 2
- 230000014509 gene expression Effects 0.000 description 40
- 239000011575 calcium Substances 0.000 description 19
- 238000006477 desulfuration reaction Methods 0.000 description 18
- 230000023556 desulfurization Effects 0.000 description 15
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000000843 powder Substances 0.000 description 10
- 230000002745 absorbent Effects 0.000 description 9
- 239000002250 absorbent Substances 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 8
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 6
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 5
- 235000010261 calcium sulphite Nutrition 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 235000010265 sodium sulphite Nutrition 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 239000005997 Calcium carbide Substances 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron ion Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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- 230000035484 reaction time Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The present invention relates to a purification method for treating SO in fumes discharged from coal-fired boilers, a desulfurizing agent used in the method and a preparation method thereof, wherein the desulfurizing agent is carbide slag, ammonia-soda sludge or a mixture of the carbide slag and the ammonia-soda sludge. The fume desulfurizing method is characterized in that the desulfurizing agent is sprayed into fumes to react with SO2 to remove SO2 in the fumes so as to achieve the goal of treating waste by waste. The present invention has significant social and economical benefits.
Description
The present invention relates to the flue gas processing technology field.More particularly, the present invention relates to coal-burning boiler and discharge SO in the flue gas
xPurification method and this method in employed desulfurizing agent and preparation method.
As everyone knows, except that containing dust, also contain SO in the coal-fired flue gas of discharging
xIf this waste gas is directly entered atmosphere, form acid rain, destroy the environment of human survival.Therefore, for a long time, people are to SO in the exhaust
xThe method of removing carried out in depth research, various improvement methods have been proposed.Conclusion is got up, and mainly contains following several:
One. wet method
1. lime/lime stone method
Flue gas after dedusting enters washing facility and absorption liquid reacts.
2. two alkaline process
This method is with the SO in NaOH, sodium carbonate or the sodium sulfite solution absorption flue gas
x, absorbed SO
2Solution again with lime stone or lime reaction, generate calcium sulfite or calcium sulfate precipitation.Solution after the regeneration can be recycled.Its reaction:
Absorption liquid has absorbed SO
2After, as follows with the reaction of calcium carbonate or calcium hydroxide:
This method can be avoided calcium salt scale occluding device and pipe fitting.But technological process complexity, and the Na that in absorption process, generates
2SO
4Be difficult for removing, so the regeneration difficulty of absorption liquid.
3. sodium sulfite absorption cycle
The sodium sulfite solution circulation absorbs SO
2Generate NaHSO
3, and NaHSO
3Regeneration be by thermal decomposition NaHSO
3Realize the SO that discharges
2Gas can be made into liquid SO
2Or elementary sulfur.
4. dilute sulfuric acid absorption process
We ratio juris be, under the catalytic action of iron ion, SO
2Oxidized and absorb.
5. electron beam irradiation method
Flue gas sprays into ammoniacal liquor after dedusting and spray cool, after electron beam irradiation, SO takes place
x, NO
xOxidation, again with ammoniacal liquor reaction, generate ammonium sulfate, ammonium nitrate, then as chemical fertilizer.
Two. semidry method
Flue gas tangentially enters the spray-drying absorption tower, contains SO
2Flue gas by gas distributor and the lime white effect that ejects through atomizer, utilize the temperature of flue gas itself, the absorbent start vaporizer generates the calcium sulfate and the calcium sulfite of dry powder shape at last.Product after its desulfurization of this method is a solid, no waste water and corrosion.But because the reaction time of flue gas in the absorption tower is longer, so equipment volume is bigger.
Three. dry method
The dry type desulfurizing method is to spray into dried absorbent in the appropriate location of flue, as quick lime or white lime, makes the reaction of absorbent and sulfur in smoke generate calcium sulfate or calcium sulfite shot-like particle.This chemistries is stable, and is water insoluble, can be used as building materials, the problem of non-secondary pollution.The key reaction of dry desulfurization is:
The used absorbent of dry desulfurization has following requirement:
Ca (OH)
2Purity 〉=90%;
Particle diameter:＜50 μ m;
Moisture content :≤1%;
Specific area: 〉=15m
2/ g Ca (OH)
2
The Ca (OH) that common building aspect is used
2Do not reach above-mentioned requirements, must be refining.
The inventor is according to actual situation of China, to the SO in the boiler smoke
xRemove and carried out for a long time research in depth, through test repeatedly, found a kind of economy and suitable fume desulphurization method.Fume desulphurization method of the present invention is to make absorbent with two kinds of discarded objects such as carbide slag and ammonia still process alkaline residue, it is sprayed in the flue gas, with the SO in the flue gas
2The SO in the flue gas is removed in reaction
2, realized the purpose of the treatment of wastes with processes of wastes against one another having the important social economic benefit.
Therefore, the purpose of this invention is to provide a kind of novel desulfurizing agent and preparation method thereof.
Another object of the present invention is to use desulfurizing agent of the present invention to carry out the application of flue gas desulfurization.
Desulfurizing agent of the present invention is carbide slag or ammonia still process alkaline residue or both mixtures, is preferably both mixtures.During for both mixture, the weight ratio of carbide slag and ammonia still process alkaline residue can change in a wide scope, according to SO in the flue gas
xContent can at random select, be generally 1: 9-9: 1, be preferably 3: 7-7: 3 more preferably 4: 6-6: 4.Desulfuration efficiency is 65-75%.
Though directly utilize commodity Ca (OH)
2It is more convenient to make desulfurizing agent, still, meets the commodity Ca (OH) of desulfurization requirement
2Price more expensive, about 400 yuan per ton.If the Ca (OH) that the self-control desulfurization is used
2Though price can be reduced to about 250 yuan per ton, need a large amount of investment costs.And facts have proved that dry removal sulfur dioxide in flue gas, the expense of absorbent are the major parts in the dry desulfurization cost.Therefore, develop a kind of new desulfurizing agent, (another patent application of the inventor, application number are 98111735.x, and the disclosed technology of this application all is incorporated herein reference with the dry type flue gas desulfurizing device.) supporting use, just can save the expense of desulfurization greatly.
The cost that carbide slag of the present invention or ammonia still process alkaline residue or both mixtures are made desulfurizing agent is extremely low, is up to about 95 yuan/ton.
The production method of desulfurizing agent of the present invention is described below.
The raw material of producing desulfurizing agent of the present invention is carbide slag and ammonia still process alkaline residue.Carbide slag is with calcium carbide (CaC
2) produce the waste residue that acetylene gas produces, its chemical equation is as follows:
As can be seen from the above equation, the main component of carbide slag is Ca (OH)
2, the table 1 that the results are shown in that carbide slag is carried out physicochemical analysis.
The physical property of table 1 carbide slag and chemical property
| Ca(OH) 2Content (weight %) | Effective calcium (weight %) | Specific area (m 2/g) | Particle diameter (μ m) |
| 91-95 | About 60 | About 30 | 〉=50 particle is less than 2 weight % |
[note] also contains impurity such as a spot of silica, di-iron trioxide, alundum (Al and chloride.
As can be seen from the table, the Ca in the carbide slag (OH)
2Content is more than 90 weight %, and its content is not less than commodity Ca (OH)
2But because reaction is violent when producing acetylene gas with calcium carbide, so the Ca in the carbide slag (OH)
2Activity and specific area all than commodity Ca (OH)
2Height.So when carbide slag was used alone as desulfurizing agent, desulphurizing ability was than commodity Ca (OH)
2High by 20%
The ammonia still process alkaline residue is a kind of solid waste that produces in the soda ash production process, and by analysis, it is mainly formed and is shown in table 2.The rerum natura and the chemical composition of table 2 ammonia still process alkaline residue
| Ca(OH) 2Content (weight %) | Effective calcium (weight %) | CO 3 ＝(weight %) | Cl -(weight %) | Specific area (m 2/g) | Particle diameter (μ m) |
| 40-50 | About 10-20 | 0.13 | 13.1 | 17.5 | 〉=50 particle is less than 2 weight % |
As known from Table 2, the active calcium ion content of ammonia still process alkaline residue is lower, and desulfuration efficiency is lower when using separately.But, containing chloride such as U-Ramin MC in the ammonia still process alkaline residue, the U-Ramin MC water imbibition is stronger, can stop calcium sulfite particles to be adsorbed on Ca (OH)
2The surface on, to Ca (OH)
2With SO
2Between reaction stronger catalytic action is arranged.Therefore U-Ramin MC can make Ca (OH)
2Utilization rate by a relatively large margin raising is arranged.
Owing to contain the moisture of the 40 weight % that have an appointment in carbide slag and the ammonia still process alkaline residue, can not directly make desulfurizing agent and use, must carry out drying, its drying technology process is as shown in Figure 1.
Further describe the present invention below with reference to accompanying drawing.
Fig. 1 is a desulfurizing agent drying technology process schematic diagram.1 expression feeding hopper, 2 expression screw(-type) feeders, 3 expression drying machines, 4 expression deduster and exhaust blowers, 5 expression chimneys, 6 expression dewatering capacity-enlarging devices, 7 expression pressure fans, 8 expression air heaters, 9 expression conveying worms, 10 expression blenders, 11 expressions are separator slightly/carefully, 12 expression gas/solid separators, 13 expression sundries separators, 14 expression sack cleaners, 15 expression blower fans, 16 expression chain-type disintegrating machines, 17 expression sack cleaners, 18 expression gas tanks, 19 expression storage powder storehouses, the moistureproof humidifier of 20 expressions, 21 expression air injection pumps, 22 expression automobiles machine in bulk, the electronic batcher of 23 expressions, 24 expression hand doors, 25 expression swash plate flappers, 26 expression bevel-type flappers, 27 expression gasification boards, 28,29 expression Circular ventilation doors, 30 expression loading machines.
In Fig. 1, water content is the carbide slag of about 40 weight % or ammonia still process alkaline residue with the loading machine feeding hopper 30 of packing into, enter drying machine 3 through spiral shell batcher 2, carbide slag behind 160-185 ℃ of temperature drying or ammonia still process alkaline residue are delivered to slightly by wind-thin separator 11, the thinner absorbent granules of separating is delivered to gas-solid separator 12 by wind, the absorbent of particle diameter qualified (particle that is less than or equal to 50 μ m is more than 98 weight %) enters storage powder storehouse 19, air then discharges through after sack cleaner 14 dedustings, after thick-coarse granule that thin separator separates is pulverized by chain-type disintegrating machine 16, return again thick-carefully separator separates.
Fig. 2 is the flue gas desulfur device process flow diagram. 1 expression boiler, 2 expression dedusters, 3 expression boiler induced-draft fans, 4 expression chimney .5 represent high pressure blower, 6 expression storage powder equipments, 7 expression feeding devices, 8 expression high-pressure electrostatic generations, 9 expression powder spraying apparatus, 10 expression gas/powder mixers, 11 expression oxysulfide on-line monitoring instrument, 12 expression computer control systems.
In Fig. 2, desulfurizing agent in the storage powder equipment 6 enters gas/powder mixer through feeding device 7, gas-solid ratio in accordance with regulations with enter powder spraying apparatus 9 after gas mixes, high-pressure electrostatic generation 8 forms a corona charging district in powder spraying apparatus, desulfurizing agent is with upper electrostatic charge of the same race during by the corona zone, then spray into flue, the sulfur dioxide reaction with in the flue gas generates calcium sulfite and calcium sulfate. High pressure blower 5 is used for desulfurizing agent is transported to flue. Oxysulfide on-line monitoring instrument is measured the concentration of sulfur dioxide before and after the desulfurization, and signal is sent into computer, sulfur dioxide concentration and the emission standards for sulfur dioxide of the country emitted dose of automatically regulating desulfurizing agent of computer after according to desulfurization.
Desulfurizing agent of the present invention is to make with carbide slag and ammonia still process alkaline residue, has realized controlling useless ingenious combination with useless, has great economic results in society. The tip heigh of desulfurizing agent of the present invention is about 95 yuan/tons, so the cost of desulfurization is also extremely low. And the inventor invented and the matching used flue gas desulfur device of desulfurizing agent, more improved the efficient of desulfurization. Therefore, compare in the situation of identical desulfuration efficiency with dry desulfurization of the prior art, have the low 2-3 of expense advantage doubly, the desulfurization slag stable chemical nature that generates can be used as construction material, does not produce secondary pollution. In sum, the invention discloses a kind of new desulfurizing agent and preparation method thereof and the application of this desulfurizing agent in flue gas desulfurization. Fully aware of, those skilled in the art, after obtaining instruction of the present invention, improvement and modification that the present invention is made are apparent, all within the scope of the invention.
Claims (5)
1. fume desulfurizing agent is less than or equal to the carbide slag of 50 μ m or the mixture of ammonia still process alkaline residue or carbide slag and ammonia still process alkaline residue is formed by particle diameter, and in weight ratio: described carbide slag comprises that content is the Ca (OH) more than 90%
2Described ammonia still process alkaline residue comprises Ca (OH)
2And U-Ramin MC, wherein Ca (OH)
2Content is 40-50%.
2. by the described desulfurizing agent of claim 1, it is characterized in that Cl in the described ammonia still process alkaline residue
-Content is 13.1.
3. by the described desulfurizing agent of claim 1, the weight ratio that it is characterized in that carbide slag and ammonia still process alkaline residue is 1: 9-9: 1.
4. the preparation method of the desulfurizing agent of one of claim 1-3, it is characterized in that carbide slag or ammonia still process alkaline residue are dewatered at 160-185 ℃ of temperature drying, make its water content in weight ratio less than after 1%, be crushed in weight ratio 98% above grain diameter and get final product less than 50 μ m screening.
5. the application of the desulfurizing agent of one of claim 1-3 is characterized in that described desulfurizing agent is sprayed in the flue gas, contacts with flue gas, removes the oxysulfide in the flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99121910A CN1086959C (en) | 1999-10-14 | 1999-10-14 | Flue gas desulfurizing agent and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99121910A CN1086959C (en) | 1999-10-14 | 1999-10-14 | Flue gas desulfurizing agent and method |
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| Publication Number | Publication Date |
|---|---|
| CN1248483A CN1248483A (en) | 2000-03-29 |
| CN1086959C true CN1086959C (en) | 2002-07-03 |
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ID=5282187
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99121910A Expired - Fee Related CN1086959C (en) | 1999-10-14 | 1999-10-14 | Flue gas desulfurizing agent and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101712039B (en) * | 2009-10-28 | 2012-06-27 | 上海河图石化工程有限公司 | Processing technology of neutralizing, extracting and oxidizing alkaline residue |
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|---|---|---|---|---|
| CN1132663C (en) * | 2000-07-04 | 2003-12-31 | 罗广福 | Method for removing sulphur oxides from smelting equipment flue gas |
| CN1122559C (en) * | 2000-07-11 | 2003-10-01 | 史汉祥 | Method for processing SO2 containing fume |
| CN101898083B (en) * | 2010-07-30 | 2012-09-26 | 福建龙净脱硫脱硝工程有限公司 | Method and device for preparing dry desulfurizing agent by using carbide slag |
| CN102266715B (en) * | 2011-06-19 | 2014-04-30 | 肖郁春 | Method for producing desulfurizing agent from carbide slag |
| CN103613264A (en) * | 2013-11-28 | 2014-03-05 | 江苏运机输送设备制造有限公司 | Ammonia II mud drying treatment process |
| CN104190243B (en) * | 2014-08-05 | 2016-07-27 | 内蒙古君正化工有限责任公司 | The coal-burning boiler method of carbide slag desulfurization and equipment thereof |
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| CN104524962A (en) * | 2014-12-16 | 2015-04-22 | 西部环保有限公司 | Method for producing desulfurization powder by using waste heat of calcined cement clinker |
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| CN111330435B (en) * | 2020-03-18 | 2022-05-27 | 福建龙净脱硫脱硝工程有限公司 | Carbide slag absorbent and preparation method thereof |
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| CN1248483A (en) | 2000-03-29 |
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