CN115445411A - Solid waste powder desulfurizer for cement kiln and preparation method thereof - Google Patents
Solid waste powder desulfurizer for cement kiln and preparation method thereof Download PDFInfo
- Publication number
- CN115445411A CN115445411A CN202210803429.9A CN202210803429A CN115445411A CN 115445411 A CN115445411 A CN 115445411A CN 202210803429 A CN202210803429 A CN 202210803429A CN 115445411 A CN115445411 A CN 115445411A
- Authority
- CN
- China
- Prior art keywords
- parts
- solid waste
- waste powder
- desulfurizer
- carbonate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000843 powder Substances 0.000 title claims abstract description 37
- 239000002910 solid waste Substances 0.000 title claims abstract description 35
- 239000004568 cement Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 40
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 7
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 239000003463 adsorbent Substances 0.000 claims description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 14
- 230000003009 desulfurizing effect Effects 0.000 claims description 14
- 239000003054 catalyst Substances 0.000 claims description 10
- 239000002893 slag Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 7
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000292 calcium oxide Substances 0.000 claims description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- 239000000395 magnesium oxide Substances 0.000 claims description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 6
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 4
- 229910000410 antimony oxide Inorganic materials 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 230000003078 antioxidant effect Effects 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 150000001721 carbon Chemical class 0.000 claims description 2
- 239000003575 carbonaceous material Substances 0.000 claims description 2
- 229940116318 copper carbonate Drugs 0.000 claims description 2
- GEZOTWYUIKXWOA-UHFFFAOYSA-L copper;carbonate Chemical compound [Cu+2].[O-]C([O-])=O GEZOTWYUIKXWOA-UHFFFAOYSA-L 0.000 claims description 2
- 239000010954 inorganic particle Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 2
- 239000001095 magnesium carbonate Substances 0.000 claims description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 claims description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims 2
- 239000000463 material Substances 0.000 claims 1
- 238000006477 desulfuration reaction Methods 0.000 abstract description 21
- 230000023556 desulfurization Effects 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract description 5
- 238000000354 decomposition reaction Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract description 3
- 230000001988 toxicity Effects 0.000 abstract description 3
- 231100000419 toxicity Toxicity 0.000 abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 12
- 238000003756 stirring Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 10
- 238000002156 mixing Methods 0.000 description 8
- 238000004383 yellowing Methods 0.000 description 8
- 239000002956 ash Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000004408 titanium dioxide Substances 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000001694 spray drying Methods 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 229910021486 amorphous silicon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 229910000420 cerium oxide Inorganic materials 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical group [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 2
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 description 1
- YSWBFLWKAIRHEI-UHFFFAOYSA-N 4,5-dimethyl-1h-imidazole Chemical compound CC=1N=CNC=1C YSWBFLWKAIRHEI-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000005411 Van der Waals force 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
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 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
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- 230000003075 superhydrophobic effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
-
- 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
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/206—Rare earth metals
- B01D2255/2065—Cerium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention relates to the field of desulfurizer, in particular to solid waste powder desulfurizer for a cement kiln and a preparation method thereof. The desulfurizer comprises the following raw materials in parts by mass: 20-45 parts of solid waste powder, 8-15 parts of an auxiliary agent, 10-36 parts of a metal oxide, 5-20 parts of functional particles and 20-45 parts of carbonate. The powder desulfurizer prepared by the application can have an excellent desulfurization effect, so that the actual using amount is less than that of the existing desulfurizer product, and the powder desulfurizer has good chemical stability and decomposition promoting efficiency, is low in cost, free of any corrosivity, radioactivity and toxicity, and has excellent market and environmental protection values and significance.
Description
Technical Field
The invention relates to the field of desulfurizer, in particular to solid waste powder desulfurizer for a cement kiln and a preparation method thereof.
Background
In addition to self-desulfurization during the cement clinker firing process, the desulfurization techniques commonly used in cement plants include dry reactant injection, hot raw meal injection, spray-drying desulfurization, and wet desulfurization.
Wherein, the dry reactant injection method has higher desulfurization efficiency, but has higher cost, which is mainly the cost for purchasing hydrated lime. The investment of the spray drying desulfurization method is lower than that of a wet process, and the spray drying desulfurization method can be realized by improving a humidifying tower of a cement plant, and has the advantages of higher desulfurization efficiency and no treatment problem of desulfurization products, but the blockage problems of pipelines, valves, spray heads and pre-heater fans are serious in the lime slurry injection process, and the overhaul and maintenance workload is larger; the solid content of the desulfurizing agent slurry exceeding 13 percent causes the atomizing of the nozzle to be difficult, and the series of operation problems present challenges for the application of the desulfurizing agent slurry in the cement industry. The wet desulfurization method has good effect, the desulfurization efficiency can reach 80-95%, the solid content of the slurry can reach 30%, and the problems of blockage and maintenance are few, but the wet desulfurization method is limited by high equipment investment, operation cost and technical requirements and is difficult to adapt to the national conditions of China.
Therefore, in order to solve the above problems, the present application provides a solid waste powder desulfurizer that has low requirements on equipment, relatively low energy consumption, low cost, and excellent desulfurization effect.
Disclosure of Invention
In order to solve the above problems, the first aspect of the present invention provides a solid waste powder desulfurizer for a cement kiln, which comprises the following raw materials, by mass: 20-45 parts of solid waste powder, 8-15 parts of an auxiliary agent, 10-36 parts of a metal oxide, 5-20 parts of functional particles and 20-45 parts of carbonate.
In a preferred embodiment, the solid waste is at least one of steel slag, copper tailings, aluminum ash, iron ore slag and tailings sand.
As a preferable scheme, the solid waste is steel slag, copper tailings and aluminum ash.
In a preferred embodiment, the auxiliary agent is at least one of an adsorbent, an antioxidant, a water repellent, a catalyst, and an anti-ultraviolet agent.
In a preferred embodiment, the metal oxide is at least one of magnesium oxide, aluminum oxide, calcium oxide, iron oxide, zinc oxide, and antimony oxide.
In a preferred embodiment, the functional particles are any one of modified carbon materials and modified inorganic particles; the average particle diameter of the functional particles is 50-500 nm.
Preferably, the functional particles have an average particle diameter of 250 to 350nm.
In a preferred embodiment, the carbonate is at least one of sodium carbonate, calcium carbonate, magnesium carbonate, potassium carbonate, barium carbonate, and copper carbonate.
As a preferred embodiment, the carbonate is sodium carbonate.
As a preferable scheme, the mass ratio of the solid waste powder to the carbonate is 22-43: 25 to 35.
As a preferable scheme, the auxiliary agents are an adsorbent and a catalyst; the mass ratio of the adsorbent to the catalyst is 5-15: 2 to 3.
In a preferred embodiment, the adsorbent is at least one of fly ash, alumina and molecular sieve.
In a preferred embodiment, the catalyst is cerium oxide.
The powder desulfurizer in the application uses solid waste steel slag, and the aluminum ash and the copper tailings can not only treat waste but also desulfurize, reduce the cement production cost and protect the environment. The desulfurization principle is divided into 2 parts, namely a first part, chemical adsorption: the high-activity oxide substance containing metals such as sodium, cerium and the like reacts with sulfur dioxide in the flue gas at the temperature of between 150 and 220 ℃ to generate sulfite and further generate sulfate through oxidation. Second part, physical adsorption: the desulfurizer contains adsorbent, the surface molecules of the adsorbent react with the generated sulfate to change the electronic structures of the adsorbent and the generated sulfate to generate dipole moment, and the tiny sulfate particles are adsorbed to the adsorbent with larger particle size through Van der Waals force, are captured at a dust collector and enter a homogenizing bank. The problem that sulfate particles are too small and easily pass through a dust collector to be discharged into the atmosphere is avoided. After the powder is ground until the specific surface area is more than 400, the powder desulfurizer can fully react with SO after the specific area is increased 2 Contact and react to ensure that the desulfurization is more complete.
As a preferable scheme, the mass percentage of the functional particles in the desulfurizing agent is 10-15%.
As a preferable scheme, the functional particles are coated modified titanium dioxide; the preparation method of the coated modified titanium dioxide comprises the following steps: (1) Dissolving organic acid anhydride in organic solution, adding a certain amount of silane coupling agent, and heating and stirring for 1-2 hours at the water bath temperature of 60-80 ℃; (2) Then, dropwise adding an organic solvent solution containing titanium dioxide into the reaction solution, and continuously stirring for reacting for 2-3 hours to obtain pretreated titanium dioxide particles; (3) Mixing the pretreated titanium dioxide particles with the skeleton raw material, adding an ethanol solvent, carrying out ultrasonic polymerization for 3-3.5 hours in a water bath ultrasonic device of 300-500W, washing and drying the obtained product to obtain modified titanium dioxide particles; (4) Mixing and stirring the modified titanium dioxide and ammonia water, and then adding the mixture into a certain amount of ethanol, stirring and mixing uniformly; (5) Preparing a dropping liquid from tetraethoxysilane and a certain amount of ethanol, and dropping the solution into the mixed solution obtained in the step (4) while stirring, wherein the dropping reaction time is 40-50 minutes; (6) And continuously stirring and reacting for 2-5 hours after the dropwise adding is finished, and centrifuging and drying a product after the reaction is finished to obtain the amorphous silicon dioxide coated modified titanium dioxide particles.
In the application, the desulfurization effect of the desulfurizer is effectively improved by adding the functional particles, and the storage stability of the desulfurizer can be further improved. The applicant believes that: according to the application, the modified functional particles not only can greatly improve the adsorption effect of the desulfurizer by virtue of the porous skeleton structure of the modified functional particles and the synergistic adsorbent, but also can be converted into functional particles with super-hydrophobic characteristics due to the covering modification of carbon dioxide surface polyhydroxy and the conversion of extremely low surface energy; on the other hand, the modified functional particles greatly enhance the light absorption effect and weaken the electron-electron hole backtracking phenomenon due to the reduction of the band gap and the heterojunction effect of electrons.
The second aspect of the invention provides a preparation method of the solid waste powder desulfurizer for the cement kiln, which comprises the steps of mixing and stirring the raw materials uniformly according to the formula proportion, and grinding the mixture to a specific surface area to obtain the solid waste powder desulfurizer.
Preferably, the specific surface area is 300 to 500m 2 /g。
Has the beneficial effects that:
1. the solid waste powder desulfurizer for the cement kiln can have excellent desulfurization effect, so that the actual using amount is smaller than that of the existing desulfurizer product, and the desulfurizer has good chemical stability and decomposition promoting efficiency, is low in cost, free of any corrosivity, radioactivity and toxicity, and has excellent market and environmental protection values and significance.
2. The solid waste powder desulfurizer for the cement kiln can be added through functional particles, so that the solid waste powder desulfurizer has good stability in the storage and transportation processes, has excellent waterproof and moisture-proof performances, and can avoid oxidation and yellowing phenomena under long-time illumination conditions.
Detailed Description
Example 1
The embodiment 1 in the first aspect provides a solid waste powder desulfurizer for a cement kiln, which comprises the following raw materials in parts by mass: 22 parts of solid waste powder, 17 parts of an auxiliary agent, 36 parts of a metal oxide, 15 parts of functional particles and 25 parts of carbonate.
The solid waste powder comprises 7 parts of steel slag, 5 parts of aluminum ash and 10 parts of copper tailings; the auxiliary agent comprises 15 parts of fly ash and 2 parts of cerium oxide; the metal oxide is 26 parts of magnesium oxide and 10 parts of calcium oxide; the functional particles are coated modified titanium dioxide, and the average particle size is 280nm; the carbonate is sodium carbonate.
The preparation method of the coated modified titanium dioxide comprises the following steps (by mass portion): (1) Dissolving 10 parts of succinic anhydride in 100 parts of ethanol, adding 5 parts of KH-550, and heating and stirring for 1.5 hours at the water bath temperature of 65 ℃; (2) Then, 50 parts of ethanol solution containing 2 parts of titanium dioxide is dripped into the reaction solution, and the mixture is continuously stirred and reacts for 3 hours to obtain pretreated titanium dioxide particles; (3) Mixing 2 parts of pretreated titanium dioxide particles, 10 parts of dimethyl imidazole and 5 parts of zinc nitrate, adding 100 parts of ethanol solvent, carrying out ultrasonic polymerization for 3.5 hours in a 400W water bath ultrasonic device, and washing and drying the obtained product to obtain modified titanium dioxide particles; (4) Mixing and stirring 2 parts of modified titanium dioxide and 1 part of ammonia water, and then adding the mixture into 100 parts of ethanol, stirring and mixing uniformly; (5) 5 parts of tetraethoxysilane and 60 parts of ethanol are prepared into a dropping liquid, and the dropping liquid is stirred and dropped into the mixed liquid in the step (4), wherein the dropping reaction time is 45 minutes; (6) And continuously stirring for reaction for 3 hours after the dropwise addition is finished, and centrifuging and drying a product after the reaction is finished to obtain the modified titanium dioxide particles coated by the amorphous silicon dioxide.
The second aspect of this embodiment provides a preparation method of the solid waste powder desulfurizer for cement kilns, which includes mixing and stirring raw materials uniformly according to a formula ratio, and grinding the mixture to a specific surface area.
The specific surface area is 400m 2 /g。
Example 2
The embodiment of the present invention is different from embodiment 1 in that: 18 parts of steel slag, 8 parts of aluminum ash, 26 parts of sodium carbonate, 17 parts of copper tailings, 15 parts of an adsorbent, 8 parts of magnesium oxide, 5 parts of calcium oxide, 3 parts of a catalyst and 12 parts of functional particles.
Example 3
The embodiment of the present invention is different from embodiment 1 in that: 13 parts of steel slag, 7 parts of aluminum ash, 29 parts of sodium carbonate, 12 parts of copper tailings, 10 parts of an adsorbent, 15 parts of magnesium oxide, 11 parts of calcium oxide, 3 parts of a catalyst and 10 parts of functional particles.
Example 4
The embodiment of the present invention is different from embodiment 1 in that: 18 parts of steel slag, 8 parts of aluminum ash, 41 parts of sodium carbonate, 11 parts of copper tailings, 6 parts of an adsorbent, 8 parts of magnesium oxide, 5 parts of calcium oxide, 3 parts of a catalyst and 15 parts of functional particles.
Comparative example 1
The embodiment of this comparative example is the same as example 1 except that: the functional particles are carbon dioxide particles of P25 type.
Comparative example 2
The embodiment of this comparative example is the same as example 1 except that: the functional particles are 3 parts.
Evaluation of Properties
Desulfurization efficiency: the test smoke condition is 65m 3 /h，198～208ppm SO 2 At 412-420 ℃, the usage amount of the desulfurizing agent is 1.5t/h, the desulfurizing efficiency of the desulfurizing agent is calculated, and the average value of the measured values is recorded in table 1.
Storage stability: the solid powder desulfurizing agent was stored in a can in the open air at 35 ℃ for 3 months, and the storage state of the desulfurizing agent was observed, and the results are shown in Table 1, if there was any accumulated water and if there was any significant yellowing.
TABLE 1
| Examples | Desulfurization efficiency% | Storage stability |
| Example 1 | 82.5 | No water accumulation and no obvious yellowing phenomenon |
| Example 2 | 80.4 | No water accumulation and no obvious yellowing phenomenon |
| Example 3 | 82.1 | No water accumulation and no obvious yellowing phenomenon |
| Example 4 | 81.9 | No water accumulation and no obvious yellowing phenomenon |
| Comparative example 1 | 72.1 | Has obvious water accumulation and slight yellowing phenomenon |
| Comparative example 2 | 75.8 | Obvious water accumulation and slight yellowing phenomenon |
Through the comparative examples 1-2 of the examples 1-4 and the table 1, the solid waste powder desulfurizer for the cement kiln, which is provided by the invention, has an excellent desulfurization effect, enables the actual consumption to be smaller than that of the existing desulfurizer product, has good chemical stability and decomposition promoting efficiency, is low in cost, has no corrosivity, radioactivity and toxicity, and has excellent market and environmental protection values and significance.
Claims (10)
1. The solid waste powder desulfurizer for the cement kiln is characterized in that: the raw materials comprise the following components in parts by mass: 20-45 parts of solid waste powder, 8-15 parts of an auxiliary agent, 10-36 parts of a metal oxide, 5-20 parts of functional particles and 20-45 parts of carbonate.
2. The solid waste powder desulfurizing agent for the cement kiln according to claim 1, characterized in that: the solid waste is at least one of steel slag, copper tailings, aluminum ash, iron ore slag and tailing sand.
3. The solid waste powder desulfurizer for cement kilns, as recited in claim 2, is characterized in that: the auxiliary agent is at least one of an adsorbent, an antioxidant, a waterproof agent, a catalyst and an anti-ultraviolet agent.
4. The solid waste powder desulfurizing agent for the cement kiln according to claim 3, characterized in that: the metal oxide is at least one of magnesium oxide, aluminum oxide, calcium oxide, iron oxide, zinc oxide and antimony oxide.
5. The solid waste powder desulfurizer for cement kilns, as set forth in claim 4, is characterized in that: the functional particles are any one of modified carbon materials and modified inorganic particles; the average particle diameter of the functional particles is 50-500 nm.
6. The solid waste powder desulfurizing agent for the cement kiln according to claim 5, characterized in that: the carbonate is at least one of sodium carbonate, calcium carbonate, magnesium carbonate, potassium carbonate, barium carbonate and copper carbonate.
7. The solid waste powder desulfurizing agent for the cement kiln according to claim 6, characterized in that: the mass ratio of the solid waste powder to the carbonate is 22-43: 25 to 35.
8. The solid waste powder desulfurizing agent for the cement kiln according to claim 7, characterized in that: the auxiliary agent is an adsorbent and a catalyst; the mass ratio of the adsorbent to the catalyst is 5-15: 2 to 3.
9. The solid waste powder desulfurizing agent for the cement kiln according to claim 8, characterized in that: the functional particles account for 10-15% of the desulfurizer by mass percent.
10. The preparation method of the solid waste powder desulfurizer for cement kilns according to any one of claims 1 to 9, which is characterized by comprising the following steps: the raw materials are mixed and stirred uniformly according to the formula proportion, and the mixture is ground to a specific surface area, so that the material is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210803429.9A CN115445411A (en) | 2022-07-07 | 2022-07-07 | Solid waste powder desulfurizer for cement kiln and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210803429.9A CN115445411A (en) | 2022-07-07 | 2022-07-07 | Solid waste powder desulfurizer for cement kiln and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115445411A true CN115445411A (en) | 2022-12-09 |
Family
ID=84295914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210803429.9A Pending CN115445411A (en) | 2022-07-07 | 2022-07-07 | Solid waste powder desulfurizer for cement kiln and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115445411A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115999335A (en) * | 2023-03-25 | 2023-04-25 | 河北冀隅智能科技有限公司 | Flue gas desulfurizing agent and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692678A (en) * | 2015-03-18 | 2015-06-10 | 高彬 | Composite desulphurization material for iron-mine waste residues and preparation method thereof |
| CN107213787A (en) * | 2017-06-29 | 2017-09-29 | 山东庚辰环保新材料有限公司 | A kind of desulfurizing agent and preparation method thereof |
| CN107469831A (en) * | 2017-09-30 | 2017-12-15 | 中晶蓝实业有限公司 | Dry-desulphurizer and its production method and application |
| CN112717677A (en) * | 2020-12-10 | 2021-04-30 | 安徽京科环境发展有限公司 | Dry desulfurizing agent with good dispersibility and preparation method thereof |
| CN112774705A (en) * | 2020-12-17 | 2021-05-11 | 南京永能新材料有限公司 | Desulfurization catalyst for cement kiln flue gas and preparation method and application thereof |
| CN113930554A (en) * | 2021-09-26 | 2022-01-14 | 河北津西新材料科技有限公司 | Grinding and desulfurizing integrated treatment method for steel slag |
| JP2022083583A (en) * | 2020-11-25 | 2022-06-06 | 上田石灰製造株式会社 | Steel desulfurization agent and method for manufacturing the same |
| CN114682085A (en) * | 2022-03-08 | 2022-07-01 | 天津水泥工业设计研究院有限公司 | Method for preparing cement kiln synergistic desulfurization and denitrification agent by resource utilization of hazardous waste and solid waste |
-
2022
- 2022-07-07 CN CN202210803429.9A patent/CN115445411A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692678A (en) * | 2015-03-18 | 2015-06-10 | 高彬 | Composite desulphurization material for iron-mine waste residues and preparation method thereof |
| CN107213787A (en) * | 2017-06-29 | 2017-09-29 | 山东庚辰环保新材料有限公司 | A kind of desulfurizing agent and preparation method thereof |
| CN107469831A (en) * | 2017-09-30 | 2017-12-15 | 中晶蓝实业有限公司 | Dry-desulphurizer and its production method and application |
| JP2022083583A (en) * | 2020-11-25 | 2022-06-06 | 上田石灰製造株式会社 | Steel desulfurization agent and method for manufacturing the same |
| CN112717677A (en) * | 2020-12-10 | 2021-04-30 | 安徽京科环境发展有限公司 | Dry desulfurizing agent with good dispersibility and preparation method thereof |
| CN112774705A (en) * | 2020-12-17 | 2021-05-11 | 南京永能新材料有限公司 | Desulfurization catalyst for cement kiln flue gas and preparation method and application thereof |
| CN113930554A (en) * | 2021-09-26 | 2022-01-14 | 河北津西新材料科技有限公司 | Grinding and desulfurizing integrated treatment method for steel slag |
| CN114682085A (en) * | 2022-03-08 | 2022-07-01 | 天津水泥工业设计研究院有限公司 | Method for preparing cement kiln synergistic desulfurization and denitrification agent by resource utilization of hazardous waste and solid waste |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115999335A (en) * | 2023-03-25 | 2023-04-25 | 河北冀隅智能科技有限公司 | Flue gas desulfurizing agent and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102701618B (en) | Method for using calcium sulfite type desulfurization gypsum to produce high-strength environmental-friendly type plastering gypsum | |
| CN101249373B (en) | Flue gas desulfurization agent preparation method | |
| CN101607172B (en) | Desulfurizer for desulfurization of smoke and method for preparing same | |
| CN115445411A (en) | Solid waste powder desulfurizer for cement kiln and preparation method thereof | |
| CN111330438A (en) | Catalytic oxidation desulfurization method for industrial flue gas | |
| CN110893312A (en) | Novel high-efficiency desulfurizer and preparation method thereof | |
| CN112717677A (en) | Dry desulfurizing agent with good dispersibility and preparation method thereof | |
| CN114229852B (en) | SO in flue gas is removed by utilizing steel slag 2 Method for synergistically extracting silica gel | |
| CN102730703B (en) | Method for inexpensive preparation of surface modified nano-silicon dioxide with rice husks | |
| CN100588721C (en) | Coating granule magnesium desulfurizer and preparation method thereof | |
| CN104437399A (en) | Low-cost activated carbon kieselguhr particles with developed pores, and preparation method of kieselguhr particles | |
| CN1306952A (en) | Process for producing compound diammonium hydrogen phosphate fertilizer | |
| CN101816928A (en) | Method for preparing coke-powder-based carbon adsorbing material by using waste coke powder | |
| CN114522532B (en) | Desulfurizing agent and preparation method thereof | |
| CN111841295B (en) | Deacidifying agent, preparation method and application thereof | |
| CN109482048B (en) | Low-concentration flue gas desulfurization method for smelting of silicon carbide by using water and electricity | |
| CN114891549A (en) | Desulfurizing agent and preparation method and application thereof | |
| WO2023024391A1 (en) | Desulfurizer composition and preparation method therefor | |
| CN107617336B (en) | A kind of poly-aspartate flue gas desulfurization and denitrification agent and its preparation method and application | |
| CN111420550A (en) | Catalytic oxidation desulfurization method for cement kiln tail flue gas | |
| CN105771636A (en) | Preparation method of smoke desulphurizing powder | |
| CN111348848A (en) | Method for using high-sulfur raw material for cement kiln | |
| Sun et al. | Preparation of sodium humate/α-aluminum oxide adsorbents for flue gas desulfurization | |
| CN109647175A (en) | A kind of cyanuric acid denitrfying agent and its preparation method and application | |
| CN113322114B (en) | Coal gangue-based briquette sulfur fixing agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |