CN114574262B - Coal-fired catalyst produced by using titanium white waste acid and preparation method thereof - Google Patents
Coal-fired catalyst produced by using titanium white waste acid and preparation method thereof Download PDFInfo
- Publication number
- CN114574262B CN114574262B CN202210213461.1A CN202210213461A CN114574262B CN 114574262 B CN114574262 B CN 114574262B CN 202210213461 A CN202210213461 A CN 202210213461A CN 114574262 B CN114574262 B CN 114574262B
- Authority
- CN
- China
- Prior art keywords
- coal
- catalyst
- fired
- metal salt
- fired catalyst
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
- C10L2230/04—Catalyst added to fuel stream to improve a reaction
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
- C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a coal-fired catalyst produced by utilizing titanium dioxide waste acid and a preparation method thereof, belonging to the technical field of preparation of inorganic chemical materials. Mixing one or more of low-grade copper oxide, sulfuric acid waste residues and cuprous sulfide with a titanium white waste acid solution to obtain a reaction solution; adding an iodine compound, a rare earth compound, an alkali metal salt, an alkaline earth metal salt and red mud into the reaction solution in sequence to prepare a semi-finished product; in addition, water and polyoxyethylene are mixed and distilled to obtain a diluent, the diluent is fully mixed with the semi-finished product, and finally sodium hydrosulfite and nano metal iron are added, so that the modification and activation effects on the coal-fired catalyst are synchronously completed, the cyclic utilization of solid wastes is realized, the harm of titanium white waste acid to the environment is reduced, and the production cost is reduced. Meanwhile, the coal-fired catalyst has the advantages of small addition amount, high coal saving rate, small smoke discharge amount, simple manufacturing process and wide application range.
Description
Technical Field
The invention belongs to the technical field of preparation of inorganic chemical materials, and particularly relates to a coal-fired catalyst produced by utilizing titanium white waste acid and a preparation method thereof.
Background
There are two major problems in the combustion and utilization of coal: firstly, coal is not combusted fully, the coal consumption is large, the heat efficiency is low, and the coal resources are wasted seriously; secondly, a large amount of harmful gas substances such as smoke dust, sulfur dioxide, carbon monoxide and the like are generated in the coal combustion process, and the atmosphere is polluted. In order to improve the utilization rate of coal resources, the traditional method is to improve equipment and an operation process, but the traditional method has huge investment and complex process and cannot fundamentally overcome the defects of large slag output, high combustible content, serious waste of coal resources and the like.
Aiming at the phenomena, the popular method in the industry is to use a coal-fired catalyst to promote the coal-fired efficiency, so that the volatilization analysis rate of coal can be improved, the ignition temperature of coal can be reduced, the ignition delay time can be shortened, the carbon burnout rate can be accelerated, sulfur and nitrogen can be fixed, and the method has great economic and environmental benefits. However, the existing coal-fired catalyst is generally prepared by adopting high-grade raw materials, and has the disadvantages of relatively high price, low economy, complicated preparation process, time consumption and labor consumption.
Through search, the Chinese patent application numbers are: 212111172916.6 filed as: 3, 13 months in 2121, the invention and creation name is: a coal-fired catalyst and a preparation method and application thereof. The coal-fired catalyst disclosed in this application comprises the following raw materials: 11 to 13 percent of inorganic acid, 3 to 6 percent of catalytic component, 1.3 to 1.5 percent of sulfur-fixing component and the balance of solvent, wherein the catalytic component is selected from one or more of alkali metal oxide, transition metal oxide and rare earth metal oxide. The preparation method comprises the following steps: adding inorganic acid into one half of the solvent, mixing, adding the catalytic component and the sulfur-fixing component, stirring, and adding the rest of the solvent to obtain the coal-fired catalyst. The application improves the coal burning rate and the burnout rate by controlling the type and the dosage of the coal-fired catalyst, but the catalyst of the application has higher raw material grade, more expensive manufacturing cost, no smoke elimination function and larger soot during use.
Disclosure of Invention
1. Problems to be solved
Aiming at the problems in the production of the conventional coal-fired catalyst, the invention provides the coal-fired catalyst produced by using titanium white waste acid and the preparation method thereof, which not only effectively improve the inflammability of coal and improve the coal-fired efficiency, but also simplify the production flow and the cost of the conventional common catalyst, simultaneously solve the problem of disposal of the titanium white waste acid and are beneficial to ecological environment protection and sustainable development.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the coal-fired catalyst is prepared by adopting titanium white waste acid, the titanium white waste acid is waste acid solution generated in the preparation of titanium dioxide by a sulfuric acid method, belongs to industrial hazardous waste, cannot promote the combustion of coal, and how to treat the waste acid solution by a certain proper mode is particularly important for improving the combustion characteristic of the coal. For example, ferrous sulfate, titanium oxide, aluminum sulfate and other useful metal elements (such as manganese, titanium and the like) and rare earth elements (such as scandium and the like) contained in the coal are processed, so that the iron is converted into certain metal oxides or iron-containing compounds and other components which are beneficial to coal combustion and promote coal to be fully combusted, and then the metal oxides or iron-containing compounds are attached to the coal in a liquid form through a spraying mode and play a role in coal combustion, and the coal combustion efficiency is further improved. Specifically, the preparation method of the coal-fired catalyst comprises the following steps:
step one, crushing and grinding one or a combination of a plurality of low-grade copper oxide, sulfuric acid waste residue and cuprous sulfide into powder, adding the powder into titanium white waste acid solution, and stirring for 5145min at the speed of 1511451r/min in the environment of 11111 ℃ to obtain reaction liquid with the main components of copper sulfate and ferric sulfate.
And step two, at the normal temperature of 25 ℃, sequentially adding iodide, rare earth compound, alkali metal salt, alkaline earth metal salt and red mud into the reaction liquid obtained in the step one, and uniformly stirring for 11min at 211r/min in a stirrer to obtain a semi-finished product.
And step three, taking 51L of tap water and 1.5% of polyoxyethylene, stirring and mixing for 15min, adding the mixture into a distillation tank, and distilling for 31min to prepare the smoke suppressor stock solution.
And step four, diluting the stock solution of the smoke suppressor in the step three by two thousandths, mixing the diluted stock solution of the smoke suppressor with the semi-finished product in the step two, adding a certain amount of sodium hydrosulfite, and introducing a certain amount of nano-metallic iron to be uniformly mixed.
As a further preferred aspect of the present invention, the sulfuric acid waste residue used in the present invention is 41-61% Fe 2 O 3 15-25% FeO, 5-1% FeS, 5% CaO and 5% MgO of the sulphuric acid cinder, mixed with the spent titanium dioxide acid, to produce a coal-combustion-prone fraction involving the main reactions:
Fe 2 O 3 +3H 2 SO 4 →Fe 2 (SO 4 ) 3 +3H 2 O
CuO+H 2 SO 4 →CuSO 4 +H 2 O
Cu 2 S+4H 2 SO 4 →2CuSO 4 +S↓+2SO 2 ↑+4H 2 O
it should be noted that the sulfuric acid waste residue is used as an industrial hazardous waste, and is mixed with titanium dioxide waste acid for use to finally prepare the coal-fired catalyst, so that the problems of large occupied area, high disposal cost and large environmental protection hidden danger of industrial waste landfill are solved, a brand new treatment idea is provided for the industrial waste, and the resource utilization rate is improved. Meanwhile, the method is also beneficial to reducing the production cost of the coal-fired catalyst, develops a new variety of the coal-fired catalyst and is beneficial to ecological environment protection and sustainable development.
The titanium dioxide waste acid of the present invention contains 11-22% by weight of H 2 SO 4 、5-1％FeSO 4 、1-2％TiO 2 、1.5-2.5％Al 2 (SO 4 ) 3 The titanium white waste sulfuric acid comprises the residual components of inevitable impurities and water. In the preparation of the coal-fired catalyst, the catalyst can fully react with related compounds, and the main reactions involved are as follows: tiO 2 2 +H 2 SO 4 →TiOSO 4 +H 2 O，TiOSO 4 +2H 2 O→H 2 TiO 3 ↓+H 2 SO 4 The metatitanic acid generated in the reaction process is unstable, but when the metatitanic acid is put into a blast furnace, the metatitanic acid and metal oxide, carbonate or metal halide can be sintered at high temperature of coal combustion to generate titanate which is beneficial to coal combustion, and the coal combustion efficiency is further improved.
Preferably, the iodide is selected from alkali metal iodides, such as one or more of KI, naI and HI, and the mass percentage content of the iodide in the catalyst is 1.15-1%. The rare earth compound being selected from halides, nitrates or hydroxides of rare earth elements, e.g. RECl 3 、RE(NO 3 ) 3 、RE(OH) 3 、La(OH) 3 、LaCl 3 、Ce(NO 3 ) 3 The content of the rare earth compound in the catalyst is 1.5-5% by mass. The alkali metal salt is selected from alkali metal chloride, carbonate, nitrate, such as NaCl, na 2 CO 3 、K 2 CO 3 、NaNO 3 One or more of the above (a), aThe mass percentage content of the alkali metal salt in the catalyst is 1-15%. The alkaline earth metal salt is selected from the group consisting of chlorides, nitrates of alkaline earth metals, e.g. CaCl 2 、MgCl 2 、Mg(NO 3 ) 2 、Ca(NO 3 ) 2 The content of the alkaline earth metal salt in the catalyst is 1-21% by mass. The red mud is Fe content of 31% 2 O 3 The Bayer process red mud not only can fully desulfurize and fix sulfur, but also can promote the combustion of coal, and the mass percentage content of the red mud in the catalyst is 1-11%.
Further, sodium dithionite added in the present invention means Na containing no crystal water 2 S 2 O 4 The mass percentage of the catalyst is 1-3%, and impurities are easy to bleach after the catalyst is added. The added nano metallic iron is spherical nano iron powder with the particle size of 51-71nm, the mass percentage content of the nano metallic iron powder in the catalyst is 1-5%, the reaction in the reaction liquid can be accelerated by optimizing the components of the nano metallic iron powder, the ferric sulfate is promoted to generate ferrous sulfate, the ferrous sulfate reacts with the copper sulfate to generate nano copper powder, the reaction is more sufficient, and the efficiency of the coal-fired catalyst is further improved, wherein the related main reaction formula is as follows:
Fe+Fe 2 (SO 4 ) 3 →3FeSO 4
Fe+CuSO 4 →FeSO 4 +Cu
more optimally, the nano copper powder generated in the reaction formula is also beneficial to repairing the worn parts of the blast furnace and prolonging the service life of blast furnace equipment. The coal-fired catalyst produced by the preparation method of the invention fully utilizes industrial waste materials for production, can effectively improve the coal-fired efficiency, and has the advantages of simple and easy preparation method and low cost.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the preparation method of the coal-fired catalyst, the titanium dioxide waste acid and the sulfuric acid waste residue are adopted for production, the industrial waste is fully utilized, the waste is treated by the waste to realize the recycling of the titanium dioxide waste sulfuric acid, and compared with the conventional disposal method of the titanium dioxide waste acid, the preparation method of the coal-fired catalyst is lower in cost and more environment-friendly. Meanwhile, the invention utilizes two industrial wastes to produce the coal-fired catalyst, compared with the conventional method for preparing the coal-fired catalyst by adopting high-grade raw materials, the method has the advantages of more economic cost, simple flow and obvious effect.
(2) According to the preparation method of the coal-fired catalyst, the titanium white waste acid does not have the function of catalyzing coal combustion, and the titanium white waste acid is subjected to primary treatment, so that useful elements and components contained in the titanium white waste acid are reacted and converted into other components which are beneficial to coal combustion, and the titanium white waste acid is used for blast furnace coal firing, so that the ignition point of coal is effectively reduced, and the coal-fired efficiency is improved.
(3) The preparation method of the coal-fired catalyst of the invention carries out production by adding titanium dioxide waste acid, has lower cost compared with the prior preparation technology of the coal-fired catalyst, and is convenient for mass production and wide application. More optimally, the catalyst component of the invention also introduces nano metal iron which can react with the main component in the catalyst at the high temperature formed by coal combustion, thereby further promoting the coal combustion efficiency, having better catalytic effect, being beneficial to repairing the worn part of the blast furnace by the reaction product and prolonging the service life of the blast furnace.
Detailed Description
The invention is further described with reference to specific examples.
Example 1
The preparation method of the coal-fired catalyst of the embodiment is as follows:
step one, preparing a reaction solution;
the method comprises the steps of crushing and grinding the combination of low-grade copper oxide and sulfuric acid waste residues into powder, adding the powder into titanium white waste acid solution, wherein the solid-to-liquid ratio is 3:7, and stirring at the speed of 411r/min for 31min under the environment of 11 ℃.
Step two, preparing a catalyst semi-finished product
The catalyst is prepared by dissolving the following raw materials in a reaction solution in percentage by mass and uniformly mixing: 1.5 percent of NaI; RECl 3 2％；CaCl 2 11 percent; 3% of red mud; the rest is reaction liquid and water, and the mixture is uniformly stirred in a stirrer at 211r/min for 11min to obtain a semi-finished product.
Step three, preparing a catalyst finished product
The prepared diluted smoke suppressor is uniformly mixed with the semi-finished product, and 3% of sodium hydrosulfite and 2% of nano Fe are added into the mixed product to be mixed.
The coal-fired catalyst obtained in the example was added in an amount of 1.5% and thoroughly mixed with 211g of coal slag, and the mixture was placed in a thermogravimetric analyzer (type TGA/DSC1/1111 SF) in a laboratory at a temperature rise range of 31-1211 ℃ at a temperature rise rate of 21 ℃/min and a linear temperature rise in a reaction atmosphere of oxygen at a flow rate of 11ml/min.
The implementation effect is as follows: improves the inflammability of the fuel, reduces the ignition temperature of the coal by 31 ℃, improves the burnout rate of the coal and saves the fire coal by 13 percent.
Example 2
The preparation method of the coal-fired catalyst of the embodiment is as follows:
step one, preparing a reaction solution;
the method comprises the steps of crushing and grinding the combination of the sulfuric acid waste residue and the cuprous sulfide into powder, adding the powder into a titanium white waste acid solution, wherein the solid-to-liquid ratio is 3:7, and stirring for 45min at a speed of 451r/min in an environment of 11 ℃.
Step two, preparing a catalyst semi-finished product
The catalyst is prepared by dissolving the following raw materials in a reaction solution in percentage by mass and uniformly mixing: KCl 3 1.7％；RE(OH) 3 3 percent; 11% of NaCl; 11% of red mud; the rest is reaction liquid and water, and the mixture is uniformly stirred in a stirrer at 211r/min for 11min to obtain a semi-finished product.
Step three, preparing a catalyst finished product
The prepared diluted smoke suppressor is uniformly mixed with the semi-finished product, and 2% of sodium hydrosulfite and 3% of nano Fe are added into the mixed product to be mixed.
The coal-fired catalyst obtained in the example was added in an amount of 1.1% and thoroughly mixed with 211g of coal slag, and the mixture was placed in a thermogravimetric analyzer (type TGA/DSC1/1111 SF) in a laboratory at a temperature rise range of 31-1211 ℃ at a temperature rise rate of 21 ℃/min and a linear temperature rise in a reaction atmosphere of oxygen at a flow rate of 11ml/min.
The implementation effect is as follows: the ignition temperature is reduced by 11 ℃, the combustion is stable, the slag discharge amount is less, the smoke concentration is reduced, the coal is saved by 11 percent, and the emission of sulfur-containing waste gas is reduced by 75 percent.
Example 3
The preparation method of the coal-fired catalyst of the embodiment is as follows:
step one, preparing a reaction solution;
the method comprises the steps of crushing and grinding the combination of low-grade copper oxide, sulfuric acid waste residue and cuprous sulfide into powder, adding the powder into titanium white waste acid solution, wherein the solid-to-liquid ratio is 3:7, and stirring for 41min at the speed of 151r/min in an environment of 71 ℃.
Step two, preparing a catalyst semi-finished product
The catalyst is prepared by dissolving the following raw materials in a reaction solution in percentage by mass and uniformly mixing: 1.5 percent of KI; RE (NO) 3 ) 3 2％；Na 2 CO 3 11％；MgCl 2 5 percent; 2% of red mud; the rest is reaction liquid and water, and the mixture is uniformly stirred in a stirrer at 211r/min for 11min to obtain a semi-finished product.
Step three, preparing a catalyst finished product
The prepared diluted smoke suppressor is uniformly mixed with the semi-finished product, and 2% of sodium hydrosulfite and 1% of nano Fe are added into the mixed product to be mixed.
The coal-fired catalyst obtained in the example was added in an amount of 1.3% and thoroughly mixed with 211g of coal slag, and the mixture was placed in a thermogravimetric analyzer (type TGA/DSC1/1111 SF) in a laboratory at a temperature rise range of 31-1211 ℃ at a temperature rise rate of 21 ℃/min and a linear temperature rise in a reaction atmosphere of oxygen at a flow rate of 11ml/min.
The implementation effect is as follows: greatly reduces the coal burnout temperature, shortens the burnout time, improves the burnout effect, has less slag discharge and NO x The discharge amount is reduced by 12 percent, and the fire coal is saved by 14 percent.
Claims (9)
1. A preparation method of a coal-fired catalyst is characterized by comprising the following steps:
step one, crushing and grinding one or a combination of a plurality of low-grade copper oxide, sulfuric acid waste residue and cuprous sulfide into powder, adding the ground powder into a titanium white waste acid solution, and stirring to obtain a reaction solution; reacting to generate reaction liquid of metatitanic acid, copper sulfate and ferric sulfate; the sulfuric acid waste residue is 40 to 60 percent of Fe 2 O 3 15 to 25% FeO, 5 to 8% FeS, 5% CaO and 5% MgO of sulfuric acid cinder;
step two, sequentially adding iodide, rare earth compound, alkali metal salt, alkaline earth metal salt and red mud into the reaction solution obtained in the step one, and stirring to obtain a semi-finished product; wherein the iodide is selected from alkali metal iodides;
step three, stirring and mixing polyoxyethylene and water, and distilling to obtain a smoke suppressor stock solution;
and step four, diluting the smoke suppressor stock solution obtained in the step three, mixing the smoke suppressor stock solution with the semi-finished product obtained in the step two, and adding sodium hydrosulfite and nano metal iron to mix uniformly to obtain the smoke suppressor.
2. The method for preparing a coal-fired catalyst according to claim 1, wherein: in the first step, the stirring temperature is 70-80 ℃, the stirring speed is 150-450 r/min, the stirring time is 5-45 min, and the titanium dioxide waste acid solution contains 18-22% of H 2 SO 4 、5~8% FeSO 4 、1~2% TiO 2 、1.5~2.5% Al 2 (SO 4 ) 3 The titanium white waste acid solution.
3. The method for preparing a coal-fired catalyst according to claim 1, wherein: in the second step, the first step is carried out,
the mass percentage content of the iodide in the catalyst is 0.05 to 1 percent;
the rare earth compound is selected from halides, nitrates or hydroxides of rare earth elements, and the mass percentage content of the rare earth compound in the catalyst is 0.5 to 5 percent;
the alkali metal salt is selected from alkali metal chloride, carbonate and nitrate, and the mass percentage content of the alkali metal salt in the catalyst is 10-15%;
the alkaline earth metal salt is selected from alkaline earth metal chloride and nitrate, and the mass percentage content of the alkaline earth metal salt in the catalyst is 5-20%.
4. The method for preparing a coal-fired catalyst according to claim 3, characterized in that: the iodide adopts one or more of KI and NaI; the rare earth compound adopts RECl 3 、RE(NO 3 ) 3 、RE(OH) 3 、La(OH) 3 、LaCl 3 、Ce(NO 3 ) 3 One or more of (a).
5. The method for preparing a coal-fired catalyst according to claim 3, characterized in that: the alkali metal salt adopts NaCl and Na 2 CO 3 、K 2 CO 3 、NaNO 3 One or more of; the alkaline earth metal salt adopts CaCl 2 、MgCl 2 、Mg(NO 3 ) 2 、Ca(NO 3 ) 2 One or more of (a).
6. The method for producing a coal-fired catalyst according to any one of claims 1 to 4, wherein: the red mud contains 30 percent of Fe 2 O 3 The Bayer process red mud has the mass percentage content of 1 to 10 percent in the catalyst.
7. The method for producing a coal-fired catalyst according to any one of claims 1 to 4, wherein: the sodium hydrosulfite is Na without crystal water 2 S 2 O 4 The mass percentage content of the catalyst is 1~3%.
8. The method for producing a coal-fired catalyst according to any one of claims 1 to 4, wherein: the particle size of the nano metallic iron is 50-70 nm, and the mass percentage content of the nano metallic iron in the catalyst is 1~5%.
9. A coal-fired catalyst characterized by: prepared by the preparation method of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210213461.1A CN114574262B (en) | 2022-03-04 | 2022-03-04 | Coal-fired catalyst produced by using titanium white waste acid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210213461.1A CN114574262B (en) | 2022-03-04 | 2022-03-04 | Coal-fired catalyst produced by using titanium white waste acid and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114574262A CN114574262A (en) | 2022-06-03 |
| CN114574262B true CN114574262B (en) | 2022-12-13 |
Family
ID=81773235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210213461.1A Active CN114574262B (en) | 2022-03-04 | 2022-03-04 | Coal-fired catalyst produced by using titanium white waste acid and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114574262B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6067914A (en) * | 1995-09-18 | 2000-05-30 | Siemens Aktiengesellschaft | Method of operating a combustion unit of a coal-fired power plant with a slag tap furnace and combustion plant operating according to the method |
| CN101220313A (en) * | 2007-12-14 | 2008-07-16 | 华南理工大学 | Multifunctional fire coal catalyst and method for producing the same |
| CN106350147A (en) * | 2016-10-24 | 2017-01-25 | 马鞍山科宇环境工程有限公司 | High-efficiency coal-saving combustion-supporting denitration agent and preparation method thereof |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4824441A (en) * | 1987-11-30 | 1989-04-25 | Genesis Research Corporation | Method and composition for decreasing emissions of sulfur oxides and nitrogen oxides |
| AU4898699A (en) * | 1999-07-16 | 2001-02-05 | Reatech | Phosphor addition in gasification |
| US6740133B2 (en) * | 2001-01-10 | 2004-05-25 | Clean Fuel Technologies, L.L.C. | Chemical change agent for coal and method of using same |
| CN101955833B (en) * | 2009-07-20 | 2013-07-10 | 江西省祥茂环保科技有限公司 | Coal combustion catalyst |
| US8961684B2 (en) * | 2009-09-24 | 2015-02-24 | Ash Improvement Technology Inc. | Production of coal combustion products for use in cementitious materials |
| CN102295970B (en) * | 2011-07-29 | 2013-09-18 | 山东宏艺科技股份有限公司 | Coal combustion improver |
| LT2807238T (en) * | 2012-01-26 | 2019-01-10 | Accordant Energy, Llc | Mitigation of harmful combustion emissions using sorbent containing fuel feedstocks |
| JP5916527B2 (en) * | 2012-06-19 | 2016-05-11 | 三菱日立パワーシステムズ株式会社 | Denitration method of exhaust gas |
| CN107573980A (en) * | 2017-09-11 | 2018-01-12 | 天津市职业大学 | A kind of coal supply chain combustion adjuvant and preparation method thereof |
| CN108048156A (en) * | 2017-12-24 | 2018-05-18 | 洛阳名力科技开发有限公司 | A kind of combustion-supporting agent for fuel coal |
| EP3705182A4 (en) * | 2019-01-22 | 2021-01-27 | Chengdu Qianlijin Technological Innovation Co. Ltd | Method for producing self-fitting nano-catalyst sewage treatment agent |
| CN110354856A (en) * | 2019-08-22 | 2019-10-22 | 安徽工业大学 | A kind of situ catalytic denitration is catalyzed the catalyst and its application method of coal char combustion simultaneously |
| CN111233437A (en) * | 2020-03-11 | 2020-06-05 | 安徽工业大学 | Preparation method of non-efflorescence high-doping-amount red mud sintered brick |
-
2022
- 2022-03-04 CN CN202210213461.1A patent/CN114574262B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6067914A (en) * | 1995-09-18 | 2000-05-30 | Siemens Aktiengesellschaft | Method of operating a combustion unit of a coal-fired power plant with a slag tap furnace and combustion plant operating according to the method |
| CN101220313A (en) * | 2007-12-14 | 2008-07-16 | 华南理工大学 | Multifunctional fire coal catalyst and method for producing the same |
| CN106350147A (en) * | 2016-10-24 | 2017-01-25 | 马鞍山科宇环境工程有限公司 | High-efficiency coal-saving combustion-supporting denitration agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114574262A (en) | 2022-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107893160B (en) | Thiosulfate and the technique for mentioning gold from difficult-treating gold mine is prepared in situ | |
| CN101220312A (en) | Coal powder injection catalytic combustion burning-rate accelerator of blast furnace | |
| CN110404936B (en) | Comprehensive treatment method for semi-dry desulfurized fly ash | |
| CN108658483A (en) | A kind of method that slag reduction recycling iron and secondary slag prepare complementary cementitious material | |
| Sun et al. | Sulfur resource recovery based on electrolytic manganese residue calcination and manganese oxide ore desulfurization for the clean production of electrolytic manganese | |
| CN101492775B (en) | Torrefaction additive for extracting vanadium pentoxide from vanadium-containing bone coal and method of use thereof | |
| CN107267252A (en) | Cement kiln combustion-supporting agent for fuel coal and preparation method thereof | |
| CN113683108B (en) | Method for preparing calcium aluminate product by using secondary aluminum ash | |
| CN109650345A (en) | Method for respectively utilizing sulfur and calcium resources in gypsum | |
| CN114574262B (en) | Coal-fired catalyst produced by using titanium white waste acid and preparation method thereof | |
| Cheng et al. | CO2 sequestration and CaCO3 recovery with steel slag by a novel two-step leaching and carbonation method | |
| CN115805008A (en) | Iron-calcium-containing flue gas desulfurizer and preparation method thereof | |
| CN109534387A (en) | A kind of method that zinc sulfite is oxidized to zinc sulfate | |
| CN108842053A (en) | The method of comprehensive utilization of Low grade manganese ore and electrolytic manganese crystallization double salt | |
| CN107858476B (en) | Composite slag modifier for converter steelmaking | |
| CN116875759A (en) | Recycling recovery method for recovering iron from laterite-nickel ore high-pressure leaching residues | |
| CN111014230A (en) | Low-temperature oxidation method of dry-method and semi-dry-method desulfurized ash | |
| CN101724485A (en) | Novel blast-furnace coal-injection combustion improver | |
| CN109279770A (en) | The desulphurization during combustion of petroleum coke and the method that reduces mirabilite content are used in a kind of glass industry | |
| CN114317990A (en) | Method for extracting vanadium from vanadium-containing steel slag through sodium oxidation and water quenching | |
| CN103773550B (en) | Liquid propellant for coal gangue power generation | |
| CN112410498A (en) | Production method for extracting vanadium by spraying powder at bottom of converter | |
| CN110201525A (en) | A method of sulfur-containing smoke gas desulfurization is carried out using alkaline scrap material | |
| CN113020218A (en) | Method for treating waste cell lining of aluminum cell | |
| CN110330038B (en) | Harmless treatment method for beryllium-containing aluminum ammonium sulfate |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |