CN114560716A - Forsterite honeycomb body, preparation method and application thereof - Google Patents
Forsterite honeycomb body, preparation method and application thereof Download PDFInfo
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- CN114560716A CN114560716A CN202210309926.3A CN202210309926A CN114560716A CN 114560716 A CN114560716 A CN 114560716A CN 202210309926 A CN202210309926 A CN 202210309926A CN 114560716 A CN114560716 A CN 114560716A
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0006—Honeycomb structures
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- 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
- B01D53/62—Carbon oxides
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- 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
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- C—CHEMISTRY; METALLURGY
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
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- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/20—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in magnesium oxide, e.g. forsterite
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
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- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
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Abstract
The invention provides a forsterite honeycomb body, which comprises the following main ingredients: 90-92 wt% of forsterite fine powder, 5-9 wt% of adsorbent and 1-3 wt% of grease; auxiliary ingredients: 1.5-3.5 wt% of a binding agent A and 1-2.5 wt% of an additive B. The invention also provides a preparation method of the forsterite honeycomb body, which comprises the steps of mixing, forming, drying and heat treatment. The invention also provides the application of the forsterite honeycomb body, and the forsterite honeycomb body is used for neutralizing and absorbing carbon dioxide. According to the invention, after the absorbent is mixed with the magnesium oxide of the forsterite, the absorbent is used for rapidly absorbing carbon dioxide, and then the magnesium oxide and the carbon dioxide are used for chemical curing, so that the absorption speed is greatly improved on the premise of ensuring the absorption rate; the preparation method used in the invention has simple process and low cost of raw materials, and the prepared forsterite honeycomb body has the advantages of large reaction area and good air permeability, and is beneficial to large-scale industrial production influence.
Description
Technical Field
The invention relates to the technical field of carbon dioxide neutralization, in particular to a forsterite honeycomb body, a preparation method and application thereof.
Background
At present, reducing the adverse effect of carbon dioxide CO2 on the environment is an important task in the current environmental protection science and technology field.
Chemical absorption methods are widely used in existing carbon neutralization technologies to capture CO2 prior to treatment. The treatment technology is various, such as pressing CO2 into the underground and sealing the CO2 in the stratum, or reacting CO2 with a CO-reactant to convert the CO2 into a target product, achieving resource utilization of CO2, realizing carbon neutralization and the like. The method is a novel excellent carbon neutralization technology, wherein mineral raw materials are used as reactants to react with CO2 to generate new solid substances, so that CO2 is solidified and carbon neutralization is realized. The method does not need to discharge other polluting chemicals, does not need to consume energy for collection and reaction, and has the advantages of energy conservation, environmental protection, simplicity and high efficiency.
However, the existing technology for solidifying CO2 by using the solid material has certain problems, namely the reaction rate of the solid mineral for absorbing and solidifying carbon dioxide is relatively slow, so that carbon dioxide needs to be circulated for many times to achieve a good absorption effect, and the production efficiency is reduced; secondly, the surface area of the solid material manufactured at present is not large enough, so that the contact area of the material and CO2 is small, and the reaction rate is low.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a forsterite honeycomb body, a preparation method and application thereof, which solve the problems that the reaction rate is relatively slow in the prior art, so that carbon dioxide needs to be circulated for many times to achieve a good absorption effect, and the production efficiency is reduced; and the problem that the surface area of the solid material is not large enough, so that the contact area of the material and CO2 is small, and the reaction rate is low.
According to an embodiment of the invention, a forsterite honeycomb body comprises the following raw materials:
the main ingredients are as follows: 90-92 wt% of forsterite fine powder, 5-9 wt% of adsorbent and 1-3 wt% of grease;
auxiliary ingredients: 1.5-3.5 wt% of a binding agent A and 1-2.5 wt% of an additive B.
Preferably, the purity of the forsterite fine powder is equal to or more than 36 percent by weight of MgO, and the granularity is equal to or less than 200 meshes.
Preferably, the adsorbent is zeolite or activated carbon powder, and the particle size of the adsorbent is less than or equal to 200 meshes.
Preferably, the oil is unsaturated fatty glyceride which is liquid at normal temperature.
Preferably, the binder A is polyvinylpyrrolidone.
Preferably, the additive B is silica sol or water glass.
The invention also provides a preparation method of the forsterite honeycomb body, which comprises the following steps:
(1) mixing materials: selecting raw materials according to a ratio, adding a proper amount of water, then putting the mixture into a pug mill for mixing, preparing pug suitable for forming, storing the pug for 18-24 hours, and then putting the pug mill into a pug extruder to extrude into mud strips for later use;
(2) molding: putting the mud strips prepared in the step (1) into a forming extruder to be extruded and formed into a honeycomb body wet blank with a plurality of straight-through holes;
(3) and (3) drying: putting the honeycomb body wet blank into a drying furnace, and drying at 110 +/-5 ℃ for 32-48 h to prepare a honeycomb body green blank;
(4) and (3) heat treatment: and (3) placing the honeycomb body green body in a heat treatment furnace, and carrying out heat treatment at 240-320 ℃ for 4-8 h to prepare the forsterite honeycomb body with a plurality of straight-through holes.
Further, the mass of the water added in the step (1) is 10-12% of the total mass of the raw materials.
Further, in the step (4), the temperature is slowly increased to 240-320 ℃ within 1-2 h at a uniform speed, and then the temperature is maintained.
The invention also provides the application of the forsterite honeycomb body, and the forsterite honeycomb body is used for neutralizing and absorbing carbon dioxide.
Compared with the prior art, the invention has the following beneficial effects:
1. the forsterite mineral raw material is mixed with absorbents such as zeolite and active carbon, and the mixture is finally calcined to obtain an integrated structure, wherein the absorbents rapidly absorb a large amount of carbon dioxide in a physical adsorption mode, but can slowly discharge absorbed gas after absorption is finished;
2. in the invention, grease is also added into the raw materials, and the surface of the magnesium oxide is modified by the grease, so that the surface activity of the magnesium oxide is improved, and the magnesium oxide can better react with carbon dioxide;
3. according to the invention, the product is made into a honeycomb shape, so that a larger surface area is obtained under the same mass, the contact area of the product and carbon dioxide is increased, and the absorption efficiency is greatly improved;
4. the preparation method used in the invention has simple process and low cost of raw materials, and the prepared forsterite honeycomb body has the advantages of large reaction area and good air permeability, and is beneficial to large-scale industrial production influence.
Detailed Description
The technical solution of the present invention is further illustrated by the following examples.
Example 1:
in this embodiment, a forsterite honeycomb body comprises the following raw materials:
the main ingredients are as follows: 90 wt% of forsterite fine powder, 7 wt% of adsorbent and 3 wt% of grease;
auxiliary ingredients: 1.5 wt% of a binding agent A and 1 wt% of an additive B.
In this example, the forsterite fine powder had a purity of MgO 36% wt and a particle size of 200 mesh. The adsorbent is zeolite powder, and the granularity of the adsorbent is 200 meshes. The oil is unsaturated fatty glyceride which is liquid at normal temperature. The binding agent A is polyvinylpyrrolidone. The additive B is silica sol.
The invention also provides a preparation method of the forsterite honeycomb body, which comprises the following steps:
(1) mixing materials: selecting raw materials according to a ratio, adding water accounting for 10% of the total mass of the raw materials, putting the mixture into a pug mill for mixing, preparing pug suitable for forming, storing the pug for 18 hours, and extruding the pug into mud strips in a mud extruder for later use;
(2) molding: filling the mud strips prepared in the step (1) into a forming extruder to be extruded and formed into a honeycomb body wet blank with a plurality of straight-through holes;
(3) and (3) drying: placing the honeycomb body wet blank into a drying furnace, and drying at 110 +/-5 ℃ for 32 hours to prepare a honeycomb body green blank;
(4) and (3) heat treatment: and (3) placing the green honeycomb body into a heat treatment furnace, slowly heating to 240 ℃ within 1h at a uniform speed, and then carrying out heat treatment for 8h to obtain the forsterite honeycomb body with a plurality of through holes.
Example 2:
in this embodiment, a forsterite honeycomb body comprises the following raw materials:
the main ingredients are as follows: 90 wt% of forsterite fine powder, 9 wt% of adsorbent and 1 wt% of grease;
auxiliary ingredients: 2.5 wt% of a binding agent A and 2 wt% of an additive B.
In this example, the forsterite fine powder had a purity of MgO 38% wt and a particle size of 180 mesh. The adsorbent is powder of activated carbon, and the granularity of the adsorbent is 180 meshes. The oil is unsaturated fatty glyceride which is liquid at normal temperature. The binding agent A is polyvinylpyrrolidone. The additive B is water glass.
The invention also provides a preparation method of the forsterite honeycomb body, which comprises the following steps:
(1) mixing materials: selecting raw materials according to a ratio, adding water accounting for 11% of the total mass of the raw materials, putting the mixture into a pug mill for mixing, preparing pug suitable for forming, storing the pug for 21 hours, and extruding the pug into mud strips for later use in a mud extruder;
(2) molding: putting the mud strips prepared in the step (1) into a forming extruder to be extruded and formed into a honeycomb body wet blank with a plurality of straight-through holes;
(3) and (3) drying: placing the honeycomb body wet blank into a drying furnace, and drying at 110 +/-5 ℃ for 40h to prepare a honeycomb body green blank;
(4) and (3) heat treatment: and (3) placing the green honeycomb body into a heat treatment furnace, slowly raising the temperature to 280 ℃ within 1.5h at a uniform speed, and then carrying out heat treatment for 6h to obtain the forsterite honeycomb body with a plurality of straight-through holes.
Example 3:
in this embodiment, a forsterite honeycomb body comprises the following raw materials:
the main ingredients comprise: 92 wt% of forsterite fine powder, 5 wt% of adsorbent and 3 wt% of grease;
auxiliary ingredients: 3.5 wt% of a binding agent A of the main ingredient, and 2.5 wt% of an additive B of the main ingredient.
In this example, the forsterite fine powder had a purity of MgO 40% wt and a particle size of 160 mesh. The adsorbent is powder of activated carbon, and the granularity of the adsorbent is 160 meshes. The grease is unsaturated fatty glyceride which is liquid at normal temperature. The binding agent A is polyvinylpyrrolidone. The additive B is silica sol.
The invention also provides a preparation method of the forsterite honeycomb body, which comprises the following steps:
(1) mixing materials: selecting raw materials according to a ratio, adding water accounting for 12% of the total mass of the raw materials, putting the mixture into a pug mill for mixing, preparing pug suitable for forming, storing the pug for 24 hours, and extruding the pug into mud strips in a mud extruder for later use;
(2) molding: putting the mud strips prepared in the step (1) into a forming extruder to be extruded and formed into a honeycomb body wet blank with a plurality of straight-through holes;
(3) and (3) drying: putting the honeycomb body wet blank into a drying furnace, and drying at 110 +/-5 ℃ for 48h to prepare a honeycomb body green blank;
(4) and (3) heat treatment: and (3) placing the green honeycomb body into a heat treatment furnace, slowly heating to 320 ℃ within 2h at a uniform speed, and then carrying out heat treatment for 4h to obtain the forsterite honeycomb body with a plurality of through holes.
Comparative example 4:
in this embodiment, a forsterite honeycomb body comprises the following raw materials:
the main ingredients are as follows: 92 wt% of forsterite fine powder, 5 wt% of quartz and 3 wt% of grease;
auxiliary ingredients: 3.5 percent of binder A by weight of the main ingredient, and 2.5 percent of additive B by weight of the main ingredient.
In this example, the forsterite fine powder had a purity of MgO 40% wt and a particle size of 160 mesh. The particle size of the quartz is 160 meshes. The oil is unsaturated fatty glyceride which is liquid at normal temperature. The binding agent A is polyvinylpyrrolidone. The additive B is silica sol.
The preparation method in comparative example 4 was the same as in example 3.
Comparative example 5:
in this example, the same honeycomb structure and pore size as those in examples 1 to 3 were used for the honeycomb activated carbon produced by Jiangsu Chuangpin New Material Co.
The products of examples 1 to 3 and comparative examples 4 to 5 were subjected to 3 cycles and 20 cycles, respectively, and then the carbon dioxide absorption rates at the completion of the cycles and after 7 days were measured, respectively, to obtain the results shown in table 1.
TABLE 1
As can be seen from Table 1, compared with comparative example 4 without the activated carbon absorbent, the product of the invention has similar absorption rate under high cycle number, but the absorption rate is far greater than that of comparative example 4 under low cycle number, which shows that the invention can obtain better carbon dioxide absorption effect under relatively low cycle number, and is beneficial to improving the absorption efficiency.
In comparison with comparative example 5 of pure activated carbon adsorption of the present invention, the absorption rate of comparative example 5 was greater than that of the product of the present invention at the very completion of the cycle, but after 7 days, the absorption rate of comparative example 5 was greatly decreased, indicating that the absorbed carbon dioxide was released and stable solidification could not be achieved, whereas the product of the present invention had only a slight change, indicating that the present invention can stably solidify carbon dioxide.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. A forsterite honeycomb comprising the following raw materials:
the main ingredients are as follows: 90-92 wt% of forsterite fine powder, 5-9 wt% of adsorbent and 1-3 wt% of grease;
auxiliary ingredients: 1.5-3.5 wt% of a binding agent A and 1-2.5 wt% of an additive B.
2. A forsterite honeycomb body as claimed in claim 1, characterized in that: the purity of the forsterite fine powder is more than or equal to 36 percent by weight of MgO, and the granularity is less than or equal to 200 meshes.
3. A forsterite honeycomb body as claimed in claim 1, characterized in that: the adsorbent is zeolite or activated carbon powder, and the particle size of the adsorbent is less than or equal to 200 meshes.
4. A forsterite honeycomb body as claimed in claim 1, characterized in that: the oil is unsaturated fatty glyceride which is liquid at normal temperature.
5. A forsterite honeycomb body as claimed in claim 1, characterized in that: the binding agent A is polyvinylpyrrolidone.
6. A forsterite honeycomb body as claimed in claim 1, characterized in that: the additive B is silica sol or water glass.
7. A method of making a forsterite honeycomb as claimed in any one of claims 1 to 6, comprising the steps of:
(1) mixing materials: selecting raw materials according to a ratio, adding a proper amount of water, then putting the mixture into a pug mill for mixing, preparing mud suitable for forming, storing the mud for 18-24 hours, and then extruding the mud into mud strips in a mud extruder for later use;
(2) molding: putting the mud strips prepared in the step (1) into a forming extruder to be extruded and formed into a honeycomb body wet blank with a plurality of straight-through holes;
(3) and (3) drying: putting the honeycomb body wet blank into a drying furnace, and drying at 110 +/-5 ℃ for 32-48 h to prepare a honeycomb body green blank;
(4) and (3) heat treatment: and (3) placing the honeycomb body green body in a heat treatment furnace, and carrying out heat treatment at 240-320 ℃ for 4-8 h to prepare the forsterite honeycomb body with a plurality of straight-through holes.
8. The method of making a forsterite honeycomb according to claim 7, wherein: the mass of the water added in the step (1) is 10-12% of the total mass of the raw materials.
9. The method of making a forsterite honeycomb according to claim 7, wherein: in the step (4), the temperature is slowly raised to 240-320 ℃ within 1-2 h at a uniform speed, and then the temperature is kept.
10. Use of a forsterite honeycomb according to any one of claims 1 to 6, characterized in that: the forsterite honeycomb is used for carbon dioxide neutralization and absorption.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011035047A2 (en) * | 2009-09-18 | 2011-03-24 | Arizona Board Of Regents For And On Behalf Of Arizona State University | High-temperature treatment of hydrous minerals |
| CN103079671A (en) * | 2010-04-30 | 2013-05-01 | 彼得·艾森伯格尔 | System and method for carbon dioxide capture and sequestration |
| CN105727884A (en) * | 2016-04-11 | 2016-07-06 | 张兴华 | Bentonite clay particles and preparation method thereof |
| CN106573197A (en) * | 2014-04-10 | 2017-04-19 | 剑桥碳捕集有限公司 | Method and system of activation of mineral silicate minerals |
| CN111603907A (en) * | 2020-05-18 | 2020-09-01 | 武汉理工大学 | Modified magnesium-based absorbent and preparation method thereof |
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- 2022-03-28 CN CN202210309926.3A patent/CN114560716B/en active Active
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|---|---|---|---|---|
| WO2011035047A2 (en) * | 2009-09-18 | 2011-03-24 | Arizona Board Of Regents For And On Behalf Of Arizona State University | High-temperature treatment of hydrous minerals |
| CN103079671A (en) * | 2010-04-30 | 2013-05-01 | 彼得·艾森伯格尔 | System and method for carbon dioxide capture and sequestration |
| CN106573197A (en) * | 2014-04-10 | 2017-04-19 | 剑桥碳捕集有限公司 | Method and system of activation of mineral silicate minerals |
| CN105727884A (en) * | 2016-04-11 | 2016-07-06 | 张兴华 | Bentonite clay particles and preparation method thereof |
| CN111603907A (en) * | 2020-05-18 | 2020-09-01 | 武汉理工大学 | Modified magnesium-based absorbent and preparation method thereof |
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| Title |
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| 方毅等: "《中国生态文明的SST的理论研究》", 31 December 2015, 吉林出版集团股份有限公司 * |
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