CN114558441A - Preparation method and application of solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent - Google Patents
Preparation method and application of solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent Download PDFInfo
- Publication number
- CN114558441A CN114558441A CN202210201130.6A CN202210201130A CN114558441A CN 114558441 A CN114558441 A CN 114558441A CN 202210201130 A CN202210201130 A CN 202210201130A CN 114558441 A CN114558441 A CN 114558441A
- Authority
- CN
- China
- Prior art keywords
- denitration agent
- calcium carbonate
- nano calcium
- product
- fluidity
- 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.)
- Granted
Links
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
- B01D53/81—Solid phase processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
- B01D53/565—Nitrogen oxides by treating the gases with solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Glanulating (AREA)
Abstract
The invention discloses a preparation method and application of a solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent, and belongs to the technical field of flue gas purification and denitration. The preparation method comprises the following steps: s1: preparing a hyperdispersant slurry; s2: preparing a nano calcium carbonate solution; s3: mixing a nano calcium carbonate solution, a hyper-dispersant slurry, polystyrene, boric acid ester and stearic acid to obtain a first product; s4: putting the first product on the surface of a filter press for filter pressing, and washing the first product by pure water during filter pressing to obtain a second product; s5: and (3) putting the second product into a granulator for granulation and molding, and putting a binder into the granulator during granulation to obtain the denitration agent. Compared with the traditional denitration agent, the denitration agent prepared by the invention has smaller particle size and angle of repose, high fluidity, avoids blocking in a pipeline, has denitration efficiency far higher than that of the traditional denitration agent, and has higher practicability.
Description
Technical Field
The invention relates to the technical field of flue gas purification and denitration, in particular to a preparation method and application of a solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent.
Background
A plurality of catalystsMetal nitrate is often used as a raw material in the production process of the purifying agent and the adsorbent. The metal nitrate is decomposed in the subsequent kiln roasting process of the catalyst, the purifying agent and the adsorbent to generate highly dispersed metal oxide active components in the catalyst, the purifying agent and the adsorbent, and simultaneously, NO-containing components are discharged2NOx, and the like, are generally collectively referred to as NOx, which is often odorous and toxic, and is also a cause of haze. When NO is present2The concentration exceeds 2000mg/m3In the meantime, the gas is brownish yellow to brownish red, and generally, the gas is absorbed by circulation of alkali solution, acidic urea solution and/or treatment solution containing oxidant to eliminate the color, so that the emission requirement can be met. The concentration limit of NOx in the exhaust air of the chimney is 100mg/m specified by GB 31573-2015 inorganic chemical industrial pollutant emission standard3Many local standards also specify more stringent concentration limits and hourly emissions limits. Therefore, in the production process of preparing the catalyst, the purifying agent and the adsorbent, the denitration agent is used for carrying out adsorption denitration on the NOx gas flow of NOx.
However, the conventional solid denitration agent has a problem that the solid denitration agent is easily blocked in a pipeline due to poor flowability of solid powder, and thus the solid denitration agent is difficult to continuously and stably convey the solid.
Disclosure of Invention
The invention aims to provide a preparation method and application of a solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent comprises the following steps:
s1: adding water into a saponification kettle, heating, adding a hyperdispersant into the saponification kettle after heating, and fully stirring to form hyperdispersant slurry;
s2: dissolving nano calcium carbonate in an alcohol solvent to form a nano calcium carbonate solution;
s3: putting the nano calcium carbonate solution obtained in the step S2 into a reaction kettle, adding the hyper-dispersant slurry, polystyrene, boric acid ester and stearic acid into the reaction kettle, and fully stirring and mixing to obtain a first product;
s4: putting the first product obtained in the step S3 on the surface of a filter press for filter pressing, and washing the first product with pure water during filter pressing to obtain a second product;
s5: and (4) putting the second product obtained in the step (S4) into a granulator for granulation molding, and putting a binder into the granulator during granulation to obtain the denitration agent.
Preferably, in the step of S1, the temperature is raised to 50 to 70 ℃.
Preferably, in the S1 step, the hyperdispersant is one or more selected from the group consisting of 1, 2-hydroxystearic acid and dioctyl phthalate.
Preferably, in the S2 step, the alcohol solvent is ethanol or methanol.
Preferably, in the step S3, the stirring speed of the reaction kettle is 1000-1500r/min, and the stirring time is 20-30 min.
Preferably, in the step S4, the number of times the second product is washed with pure water is 3 to 4 times.
Preferably, in the S5 step, the binder is one or more of carnauba wax, beeswax, or fischer-tropsch wax.
Preferably, the average particle size of the denitrifier is 40-80nm, and the specific surface area is 25-30m2/g。
The invention also provides application of the denitration agent prepared by the preparation method of the solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent. Specifically, the method comprises the following steps: placing the denitration agent in a flue gas channel to react with flue gas; in the flue gas channel, the flow rate of flue gas is 5-7m/s, the temperature of the flue gas is 300-400 ℃, and the oxygen content of the flue gas is 3-8 VOL%.
Compared with the prior art, the invention has the beneficial effects that: compared with the traditional denitration agent, the denitration agent prepared by taking the nano calcium carbonate as the main raw material has smaller particle size and smaller angle of repose, thereby having high fluidity, avoiding blockage in a pipeline, having denitration efficiency far higher than that of the traditional denitration agent and having higher practicability.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a preparation method of a solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent comprises the following steps:
s1: adding 500g of water into a saponification kettle, heating to 60 ℃, adding 150g of 1, 2-hydroxystearic acid into the saponification kettle, and fully stirring to form hyperdispersant slurry;
s2: dissolving 400g of nano calcium carbonate in absolute ethyl alcohol to form 3.4mol/L nano calcium carbonate solution;
s3: putting the nano calcium carbonate solution obtained in the step S2 into a reaction kettle, adding the hyper-dispersant slurry obtained in the step S1, 150g of polystyrene, 20g of trimethyl borate and 50g of stearic acid into the reaction kettle, and stirring for 20min at the rotating speed of 1400r/min to obtain a first product;
s4: putting the first product on the surface of a filter press for filter pressing, and washing the first product by pure water during filter pressing to obtain a second product; the number of times of washing the second product by pure water is 3;
s5: the second product was put into a granulator and granulated, and 30g of fischer-tropsch wax was put into the granulator during granulation, thereby obtaining a denitration agent a.
Example 2:
a preparation method of a solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent comprises the following steps:
s1: adding 500g of water into a saponification kettle, heating to 60 ℃, adding 200g of 1, 2-hydroxystearic acid into the saponification kettle, and fully stirring to form hyperdispersant slurry;
s2: dissolving 400g of nano calcium carbonate in absolute ethyl alcohol to form 3.4mol/L nano calcium carbonate solution;
s3: putting the nano calcium carbonate solution obtained in the step S2 into a reaction kettle, adding the hyper-dispersant slurry obtained in the step S1, 160g of polystyrene, 20g of trimethyl borate and 50g of stearic acid into the reaction kettle, and stirring for 30min at the rotating speed of 1400r/min to obtain a first product;
s4: putting the first product on the surface of a filter press for filter pressing, and flushing the first product by pure water during filter pressing to obtain a second product; the number of times of washing the second product by pure water is 4;
s5: the second product was put into a granulator and granulated, and 30g of fischer-tropsch wax was put into the granulator during granulation, thereby obtaining a denitration agent B.
Example 3:
a preparation method of a solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent comprises the following steps:
s1: adding 500g of water into a saponification kettle, heating to 60 ℃, adding 200g of dioctyl phthalate into the saponification kettle, and fully stirring to form hyperdispersant slurry;
s2: dissolving 600g of nano calcium carbonate in absolute ethyl alcohol to form 4.8mol/L nano calcium carbonate solution;
s3: putting the nano calcium carbonate solution obtained in the step S2 into a reaction kettle, adding the hyper-dispersant slurry obtained in the step S1, 150g of polystyrene, 20g of trimethyl borate and 50g of stearic acid into the reaction kettle, and stirring at the rotating speed of 1400r/min for 25min to obtain a first product;
s4: putting the first product on the surface of a filter press for filter pressing, and washing the first product by pure water during filter pressing to obtain a second product; the number of times of washing the second product by pure water is 3;
s5: the second product was put into a granulator and granulated, and 25g of carnauba wax was put into the granulator during granulation, thereby obtaining a denitration agent C.
Example 4:
a preparation method of a solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent comprises the following steps:
s1: adding 500g of water into a saponification kettle, heating to 60 ℃, adding 200g of 1, 2-hydroxystearic acid into the saponification kettle, and fully stirring to form hyperdispersant slurry;
s2: dissolving 600g of nano calcium carbonate in absolute ethyl alcohol to form 4.8mol/L nano calcium carbonate solution;
s3: putting the nano calcium carbonate solution obtained in the step S2 into a reaction kettle, adding the hyper-dispersant slurry obtained in the step S1, 140g of polystyrene, 20g of trimethyl borate and 50g of stearic acid into the reaction kettle, and stirring for 30min at the rotating speed of 1400r/min to obtain a first product;
s4: putting the first product on the surface of a filter press for filter pressing, and washing the first product by pure water during filter pressing to obtain a second product; the number of times of washing the second product by pure water is 4;
s5: the second product was put into a granulator and granulated, and 25g of carnauba wax was put into the granulator during granulation, thereby obtaining a denitration agent D.
Comparative example:
a commercially available solid denitration agent (a mixture formed by mixing ammonium chloride, calcium chloride, fly ash and potassium permanganate in a mass ratio of 100:25:2: 1) is taken as a comparison, and is marked as a denitration agent E.
The denitration agent a, the denitration agent B, the denitration agent C, the denitration agent D and the denitration agent E obtained in examples 1 to 4 and comparative examples were subjected to parameter detection and denitration efficiency detection, and the parameter detection tables are as follows:
as can be seen from the above table, the particle diameters of the denitration agent a, the denitration agent B, the denitration agent C, and the denitration agent D obtained by the above preparation method are much smaller than those of the existing denitration agent E, and the angle of repose is also smaller than that of the denitration agent E, so that the denitration agent a, the denitration agent B, the denitration agent C, and the denitration agent D have high fluidity, and are prevented from being clogged inside a pipeline, and the porosity of the denitration agent a, the denitration agent B, the denitration agent C, and the denitration agent D is larger than that of the denitration agent E, so that the denitration efficiency is improved.
In the denitration efficiency detection, a denitration agent A, a denitration agent B, a denitration agent C, a denitration agent D and a denitration agent E are placed in a flue gas channel to react with flue gas; in the flue gas channel, the flow rate of flue gas is 5-7m/s, the temperature of the flue gas is 300-400 ℃, and the oxygen content of the flue gas is 3-8 VOL%. Respectively measuring the NOx concentration before and after the flue gas is introduced, and obtaining the denitration efficiency as follows:
| denitration efficiency | |
| Denitrifier A | 95％ |
| Denitrifier B | 96％ |
| Denitrifier C | 95％ |
| Denitrification agent D | 94％ |
| Denitrifier E | 58％ |
As can be seen from the above table, the denitration efficiency of denitration agent a, denitration agent B, denitration agent C, and denitration agent D is higher than the denitration efficiency of denitration agent E.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A preparation method of a solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent is characterized by comprising the following steps:
s1: adding water into a saponification kettle, heating, adding a hyperdispersant into the saponification kettle after heating, and fully stirring to form hyperdispersant slurry;
s2: dissolving nano calcium carbonate in an alcohol solvent to form a nano calcium carbonate solution;
s3: putting the nano calcium carbonate solution obtained in the step S2 into a reaction kettle, adding the hyper-dispersant slurry, polystyrene, boric acid ester and stearic acid into the reaction kettle, and fully stirring and mixing to obtain a first product;
s4: putting the first product obtained in the step S3 on the surface of a filter press for filter pressing, and washing the first product with pure water during filter pressing to obtain a second product;
s5: and (4) putting the second product obtained in the step (S4) into a granulator for granulation molding, and putting a binder into the granulator during granulation to obtain the denitration agent.
2. The preparation method of the solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent according to claim 1, is characterized in that: in the step S1, the temperature is raised to 50-70 ℃.
3. The preparation method of the solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent according to claim 1, is characterized in that: in the S1 step, the hyperdispersant is one or more selected from the group consisting of 1, 2-hydroxystearic acid and dioctyl phthalate.
4. The preparation method of the solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent according to claim 1, is characterized in that: in the step S2, the alcohol solvent is ethanol or methanol.
5. The method for preparing the nano calcium carbonate denitration agent with high solid-state fluidity, high efficiency and low byproduct according to claim 1, which is characterized by comprising the following steps: in the step S3, the stirring speed of the reaction kettle is 1000-1500r/min, and the stirring time is 20-30 min.
6. The preparation method of the solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent according to claim 1, is characterized in that: in the step S4, the number of times of washing the second product with pure water is 3 to 4 times.
7. The preparation method of the solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent according to claim 1, is characterized in that: in the S5 step, the binder is one or more of carnauba wax, beeswax, or fischer-tropsch wax.
8. The method for preparing the nano calcium carbonate denitration agent with high solid-state fluidity, high efficiency and low byproduct according to claim 1, which is characterized by comprising the following steps: the average particle size of the denitrifier is 40-80nm, and the specific surface area is 25-30m2/g。
9. The application of the denitration agent prepared by the preparation method of the solid nano calcium carbonate denitration agent with high fluidity, high efficiency and low by-product as claimed in any one of claims 1 to 6.
10. The use of the denitrifier according to claim 9, wherein: comprises the following steps: placing the denitration agent in a flue gas channel to react with flue gas; in the flue gas channel, the flow rate of flue gas is 5-7m/s, the temperature of the flue gas is 300-400 ℃, and the oxygen content of the flue gas is 3-8 VOL%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210201130.6A CN114558441B (en) | 2022-03-02 | 2022-03-02 | Preparation method and application of solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210201130.6A CN114558441B (en) | 2022-03-02 | 2022-03-02 | Preparation method and application of solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114558441A true CN114558441A (en) | 2022-05-31 |
| CN114558441B CN114558441B (en) | 2023-05-30 |
Family
ID=81717502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210201130.6A Active CN114558441B (en) | 2022-03-02 | 2022-03-02 | Preparation method and application of solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114558441B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1249765A (en) * | 1997-03-17 | 2000-04-05 | 大金工业株式会社 | Filler-free granular polytetrafluoroethylene powder and process for producing same |
| US20020155038A1 (en) * | 2000-07-31 | 2002-10-24 | Toshio Ohi | Combustion exhaust gas treatment process and treatment apparatus |
| CN102008891A (en) * | 2010-09-25 | 2011-04-13 | 山东理工大学 | Preparation process of sintering-free nanometer ZnFe2O4-TiO2 desulfurizing agent filter membrane |
| CN102161586A (en) * | 2011-04-26 | 2011-08-24 | 大连金玛硼业科技集团有限公司 | Method for preparing boron carbide ceramic powder with controllable particle size |
| CN105727730A (en) * | 2016-03-22 | 2016-07-06 | 天津滨环化学工程技术研究院有限公司 | Efficient flue gas desulfurization and denitrification method and materials adopted by same |
| CN107694322A (en) * | 2017-11-06 | 2018-02-16 | 嘉兴中泰节能科技有限公司 | A kind of furnace sulfur fixation coal-saving agent |
| CN108619873A (en) * | 2017-03-20 | 2018-10-09 | 韩越秦 | A kind of preparation method of nano porous zinc oxide desulfurizing agent |
| CN108927118A (en) * | 2018-08-03 | 2018-12-04 | 中碳能源(山东)有限公司 | A kind of calcining petroleum coke waste-gas adsorbant and its preparation method and application |
| CN109385072A (en) * | 2017-08-10 | 2019-02-26 | 深圳沃海森科技有限公司 | High temperature resistant, corrosion-resistant, environmentally friendly high flame retardant air conditioner housing composite material and preparation method |
| CN111992035A (en) * | 2020-08-13 | 2020-11-27 | 青岛惠城环保科技股份有限公司 | High-fluidity efficient denitration agent and preparation method thereof |
| CN114042434A (en) * | 2021-10-12 | 2022-02-15 | 佛山市天禄智能装备科技有限公司 | Tail gas desulfurizer for rotary kiln and preparation method thereof |
-
2022
- 2022-03-02 CN CN202210201130.6A patent/CN114558441B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1249765A (en) * | 1997-03-17 | 2000-04-05 | 大金工业株式会社 | Filler-free granular polytetrafluoroethylene powder and process for producing same |
| US20020155038A1 (en) * | 2000-07-31 | 2002-10-24 | Toshio Ohi | Combustion exhaust gas treatment process and treatment apparatus |
| CN102008891A (en) * | 2010-09-25 | 2011-04-13 | 山东理工大学 | Preparation process of sintering-free nanometer ZnFe2O4-TiO2 desulfurizing agent filter membrane |
| CN102161586A (en) * | 2011-04-26 | 2011-08-24 | 大连金玛硼业科技集团有限公司 | Method for preparing boron carbide ceramic powder with controllable particle size |
| CN105727730A (en) * | 2016-03-22 | 2016-07-06 | 天津滨环化学工程技术研究院有限公司 | Efficient flue gas desulfurization and denitrification method and materials adopted by same |
| CN108619873A (en) * | 2017-03-20 | 2018-10-09 | 韩越秦 | A kind of preparation method of nano porous zinc oxide desulfurizing agent |
| CN109385072A (en) * | 2017-08-10 | 2019-02-26 | 深圳沃海森科技有限公司 | High temperature resistant, corrosion-resistant, environmentally friendly high flame retardant air conditioner housing composite material and preparation method |
| CN107694322A (en) * | 2017-11-06 | 2018-02-16 | 嘉兴中泰节能科技有限公司 | A kind of furnace sulfur fixation coal-saving agent |
| CN108927118A (en) * | 2018-08-03 | 2018-12-04 | 中碳能源(山东)有限公司 | A kind of calcining petroleum coke waste-gas adsorbant and its preparation method and application |
| CN111992035A (en) * | 2020-08-13 | 2020-11-27 | 青岛惠城环保科技股份有限公司 | High-fluidity efficient denitration agent and preparation method thereof |
| CN114042434A (en) * | 2021-10-12 | 2022-02-15 | 佛山市天禄智能装备科技有限公司 | Tail gas desulfurizer for rotary kiln and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114558441B (en) | 2023-05-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107488021B (en) | The manufacturing method of cementitious material based on ozone oxidation | |
| CN107952449B (en) | Low-temperature synergistic denitration, dioxin and mercury removal honeycomb catalyst and preparation method thereof | |
| CN111545040B (en) | Composite denitration agent and preparation method thereof | |
| CN113769547A (en) | Granular composite denitration agent and preparation method thereof | |
| CN113877599B (en) | Cobalt manganese spinel material and preparation method and application thereof | |
| CN105854888A (en) | Copper-based low-temperature conversion catalyst and preparation method thereof | |
| CN110683780A (en) | Modified fly ash for curing and sealing carbon dioxide and preparation method thereof | |
| CN115212869A (en) | CeO preparation based on Ce-MOF precursor 2 /TiO 2 Preparation method of composite thermal catalytic material | |
| CN111514748A (en) | Wide-temperature flue gas dry desulfurizing agent for moving bed process and preparation method thereof | |
| CN114558441A (en) | Preparation method and application of solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent | |
| CN114160139A (en) | Preparation method of dimethyl carbonate | |
| CN101301607B (en) | High-efficiency energy-saving combustion supporting catalyst | |
| CN109621713B (en) | Sludge composite denitration agent and preparation and application thereof | |
| CN103949264A (en) | Catalyst for performing high-temperature catalytic decomposition of N2O and preparation method of catalyst | |
| CN115245820B (en) | Spinel catalyst, preparation method and application thereof | |
| CN113877568B (en) | Porous high-temperature-resistant catalyst and preparation method thereof | |
| CN107876090B (en) | Denitration catalyst | |
| CN216039746U (en) | System for preparing V2O5 pellets from desulfurized fly ash and vanadium titano-magnetite | |
| CN114160104A (en) | Kiln flue gas CO2Trapping and utilizing coupling material and application thereof | |
| CN112403225A (en) | Method for reducing nitrogen oxides of caustic soda flake device | |
| CN113617219A (en) | Flue gas denitration agent and preparation method thereof | |
| CN110681255A (en) | Reactant for flue gas desulfurization and denitrification and preparation method thereof | |
| CN109433188B (en) | Denitration catalyst, preparation method of denitration catalyst and denitration method | |
| CN114749167B (en) | N/S-TiO with block structure 2 Material, preparation method and application thereof | |
| CN113877391B (en) | Composite additive for selective non-catalytic reduction denitration of flue gas, preparation method and application thereof |
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 |