Forming method of inorganic fiber corrugated paper containing solid amine
By rolling the solid amine on inorganic fiber paper, the problems of insufficient loading and low firmness in the traditional coating method are solved, efficient carbon dioxide capture is achieved, and energy consumption and cost are reduced.
Patent Information
- Application Number
- CN202510867554.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-26
- Publication Date
- 2025-08-26
AI Technical Summary
In the prior art, the carbon dioxide capture process has problems such as high desorption energy consumption, easy degradation of chemical absorbers, equipment corrosion and poor system stability. Traditional coating methods lead to insufficient loading of organic amines, low firmness, and easy coating to fall off, affecting the adsorption and desorption efficiency.
The solid amine is coated on the front and back sides of the inorganic fiber paper by rolling, and the loading capacity and firmness are controlled by drying and curing treatment to prepare inorganic fiber corrugated paper containing solid amine for preparation of carbon dioxide adsorption wheels or rotors.
It improves the loading and firmness of organic amines, reduces the energy consumption and cost of carbon capture, avoids the generation of wastewater, and improves the efficiency of carbon dioxide absorption and desorption.
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Figure CN120534012A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of low-carbon energy conservation and carbon capture, and in particular to a method for forming inorganic fiber corrugated paper containing solid amine, and inorganic fiber paper and a carbon dioxide adsorption rotor or drum prepared by the method. Background Art
[0002] Against the backdrop of global warming, capturing carbon dioxide emitted by industries such as power, steel, cement, and transportation, and using specific technologies to store, convert, and utilize it to reduce greenhouse gas emissions is becoming a focus of international attention. Currently, carbon dioxide from flue gases and engine exhaust is primarily separated and enriched through absorption, adsorption, and membrane separation. Carbon capture processes using amine chemical absorption suffer from high desorption energy consumption, prone to chemical absorbent degradation and escape, and equipment corrosion. Carbon capture processes based on membrane separation also suffer from poor system stability, short service life, and high overall costs.
[0003] Compared to traditional fixed-bed temperature swing adsorption (TSA) carbon capture processes using granular CO adsorbents, the CO2 capture process using an adsorption rotor or drum offers the advantages of lower regeneration temperatures and reduced degradation and escape of the organic amine adsorbent. Its technical features include: an organic amine CO2 adsorbent material is loaded onto an inorganic fiber honeycomb. As flue gas flows through the adsorption zone of the rotor or drum, CO2 molecules in the flue gas are adsorbed onto the honeycomb. When the adsorption zone rotates to the regeneration zone, the inorganic fiber honeycomb is heated by the gas, desorbing CO2 from the honeycomb, regenerating the honeycomb. The regenerated honeycomb then rotates back to the adsorption zone to re-adsorb CO2, achieving continuous adsorption and separation of CO2 from the flue gas. Because the thin CO2 adsorption layer on the honeycomb is only a few microns thick, the mass and heat transfer efficiency between the gas molecules in the honeycomb and the adsorption bed is significantly improved. Therefore, using this rotor or drum-based TSA carbon capture technology to concentrate and separate low-concentration CO2 from industrial flue gas can effectively reduce carbon capture energy consumption. Moreover, since it is less affected by water vapor and the regeneration temperature is less than 100°C, organic amines are not easily degraded, thereby effectively reducing the consumption of organic amines and carbon capture costs.
[0004] Inorganic fiber honeycomb is the technical core of preparing adsorption rotor or drum. Effectively improving the loading capacity and adhesion of carbon dioxide adsorption material in inorganic fiber honeycomb is the key to preparing high-performance adsorption rotor or drum. Patent document CN202210737092.6 uses inorganic fiber honeycomb to impregnate and coat a slurry of 13X zeolite carbon dioxide adsorption material to prepare a carbon dioxide adsorption rotor. Since zeolite preferentially adsorbs water vapor in flue gas compared to carbon dioxide, it will cause the carbon dioxide adsorption capacity of the rotor to decrease, so it is necessary to introduce a dehumidification rotor at the front end of the carbon dioxide adsorption rotor, but the use of a dehumidification rotor will lead to an increase in carbon capture energy consumption. Since chemical adsorption occurs between organic amine molecules and carbon dioxide molecules, they are less affected by water vapor. Therefore, organic amines, weakly basic anion exchange resins containing amine groups, and solid amines loaded with activated carbon or silica are loaded on ceramic fiber paper. The rotor or drum produced therefrom does not require a pre-dehumidification device when used for carbon capture. Since the loading capacity of such solid CO2 adsorbents is closely related to the thickness of the coating, a thicker coating increases the loading capacity, but this can lead to a decrease in the solid CO2 adsorbent's adhesion and make the coating more susceptible to detachment. Furthermore, the CO2 adsorption and desorption process is significantly influenced by diffusion control; excessively thick coatings can reduce the adsorption and desorption rate and increase regeneration energy consumption. Reducing the coating thickness results in a lower loading capacity of the solid CO2 adsorbent in the rotor, thereby reducing CO2 capture efficiency. Patent document CN202410647506.5 discloses a method for preparing CO2-absorbing fiber corrugated paper containing a polymeric organic amine by mixing an aqueous solution of a polymeric organic amine, inorganic fibers, and an additive into a slurry and then wet-making it. While this method effectively controls the loading capacity and firmness of the organic amine, the wet-making process produces a large amount of organic amine wastewater, resulting in high costs and significant pollution. Summary of the Invention
[0005] The object of the present invention is to provide a method for forming inorganic fiber corrugated paper containing solid amine. The present invention provides a method for coating the front and back surfaces of the inorganic fiber paper with solid amine by roller pressing, so that the solid amine is not only evenly dispersed on the surface of the inorganic fiber paper, but also can penetrate into the gaps of the inorganic fiber paper under the action of pressure, thereby effectively controlling the loading amount and firmness of the solid amine and improving the adsorption and desorption efficiency of carbon dioxide.
[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is: a method for forming inorganic fiber corrugated paper containing solid amine, comprising the following steps: after uniformly mixing the solid amine and the auxiliary agent into a colloid, the front and back sides of the inorganic fiber paper are coated respectively by roller pressing, and after drying and curing treatment, the corrugated roller is pressed and formed to prepare the inorganic fiber corrugated paper containing solid amine.
[0007] Furthermore, the solid amine is an organic amine containing at least two or more groups of primary amine, secondary amine, and tertiary amine, and has a melting point of 40° C. to 200° C. and / or an average molecular weight of 10,000 to 100,000.
[0008] Furthermore, the auxiliary agent includes an organic auxiliary agent and / or an inorganic auxiliary agent; the inorganic auxiliary agent is selected from one or more of sodium silicate, aluminum dihydrogen phosphate, silica sol, aluminum sol, silica-aluminum composite sol, titanium sol, zirconium sol or pseudo-boehmite; the organic auxiliary agent is selected from one or more of cellulose, polyvinyl alcohol, and polyvinyl acetate.
[0009] Furthermore, the inorganic fiber paper is selected from one or more of glass fiber, alumina fiber, mullite, kaolin fiber or basalt fiber, and the fiber diameter is 1-5 μm.
[0010] Furthermore, there are multiple ways to mix the solid amine and the additive. The first is to mechanically stir and mix the solid amine and the additive. The second is to grind and mix the solid amine and the additive using a ball mill or other equipment. The third is to disperse or dissolve the solid amine and the additive in a water liquid medium and then mix them in a solid state by filtering, distilling, or other means. The mass fraction of water or other organic solvent in the colloid containing the organic amine obtained after mixing is 10-60%.
[0011] Furthermore, the colloid containing organic amine and the inorganic fiber paper are squeezed and glued by two rollers, and the gluing pressure is greater than 0.1 MPa and less than 2 MPa.
[0012] Furthermore, after the inorganic fiber paper is glued, it is dried and solidified by infrared heating or hot air drying at a drying temperature of 60-200°C. The inorganic fiber paper containing solid amine obtained after drying contains: the mass fraction of organic amine is 1-40%; the mass fraction of auxiliary agent is 1-10%; the mass fraction of inorganic fiber paper base material is 50-98%; the dried and solidified inorganic fiber paper is hot-pressed by corrugating rollers to obtain inorganic fiber corrugated paper, wherein the operating temperature of the hot-pressing is 30-90°C.
[0013] Furthermore, the waveform of the inorganic fiber corrugated paper is V-shaped, U-shaped or UV-shaped; the flute type is one of A, C, B, E, F, G or a customized special flute type.
[0014] A roll-formed inorganic fiber paper containing solid amine is prepared by the above-mentioned forming method. The inorganic fiber paper can be used as a flat layer and composited with inorganic fiber corrugated paper containing solid amine as a corrugated layer to prepare an inorganic fiber honeycomb body; the flat layer of inorganic fiber paper containing solid amine and the corrugated layer are directly rolled into a disc-shaped inorganic fiber honeycomb body, or stacked into a block-shaped inorganic fiber honeycomb body.
[0015] A carbon dioxide adsorption rotor or drum is prepared from the inorganic fiber honeycomb body containing solid amine and is used for industrial flue gas carbon capture or direct air carbon capture.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] 1. The present invention provides a new method for efficiently coating inorganic fiber paper with an organic amine and then corrugating it. Compared to conventional impregnation or direct wet papermaking methods, the organic amine, under roller pressure, not only adheres to the surface of the inorganic fiber paper but also penetrates into the crevices of the paper. This effectively improves the loading capacity, uniformity, and firmness of the organic amine, while also avoiding the generation of large amounts of wastewater.
[0018] 2. The inorganic fiber paper containing solid amine provided by the present invention can be used to prepare a carbon dioxide adsorption wheel or drum for flue gas carbon capture and direct air carbon capture, thereby reducing the energy consumption and cost of carbon capture. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a roller pressing process diagram of the present invention;
[0020] Figure 2 is a desorption curve obtained from the CO2 adsorption performance test of Example 1;
[0021] Figure 3 is a desorption curve obtained from the CO2 adsorption performance test of Example 2;
[0022] Figure 4 is a desorption curve obtained from the CO2 adsorption performance test of Example 3;
[0023] In the figure: 1: unwinder; 2, 4: roller coating machine; 3: drying oven; 5: corrugated roller; 6, 7: solid amine silo. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0025] In one aspect, embodiments of the present invention provide a method for forming inorganic fiber corrugated paper for carbon dioxide adsorption. A solid amine and an additive are uniformly mixed to form a colloid. The colloid is then applied to the front and back surfaces of the inorganic fiber paper using a roller press. After drying and curing, the paper is then formed using corrugated rollers to produce inorganic fiber corrugated paper containing the solid amine. This method, through roller coating, evenly disperses the solid amine and allows it to penetrate the crevices of the inorganic fiber paper, effectively controlling the loading capacity and firmness, improving the efficiency of carbon dioxide adsorption and desorption, and avoiding the generation of large amounts of wastewater.
[0026] In the present invention, the solid amine is an organic amine containing at least two or more groups selected from the group consisting of primary, secondary, and tertiary amines. Preferred solid amines have a melting point of 40°C or higher and 200°C or lower, and / or an average molecular weight of 10,000 or higher and 100,000 or lower. This ensures the stability and adsorption activity of the solid amine during the process, preventing decomposition during adsorption and regeneration, and improving the performance of the adsorption wheel or drum. The additives include organic and / or inorganic additives; the inorganic additives are selected from one or more of sodium silicate, aluminum dihydrogen phosphate, silica sol, aluminum sol, silica-aluminum composite sol, titanium sol, zirconium sol, or pseudo-boehmite; and the organic additives are selected from one or more of cellulose, polyvinyl alcohol, and polyvinyl acetate. In addition to the aforementioned additives, small-molecule organic amines such as ethanolamine and aminosilane with a melting point below 40°C or an average molecular weight below 10,000 may also be added. The inorganic fiber paper is selected from one or more of glass fiber, alumina fiber, mullite, kaolin fiber, or basalt fiber, with a fiber diameter of 1-5 μm. The addition of additives can enhance the bonding force between solid amine and inorganic fiber paper, improve the coating performance of the colloid, make the solid amine adhere more firmly to the inorganic fiber paper, and improve the overall performance of the corrugated paper.
[0027] In the present invention, the solid amine and the additive can be mixed in a variety of ways. The solid amine and additive can be mechanically stirred; they can also be ground and mixed using a ball mill or other equipment; or they can be dispersed or dissolved in a liquid medium such as water, mixed, and then filtered or distilled to obtain a solid product. The resulting colloid containing the organic amine contains 10-60% water or other organic solvent by mass. The appropriate mixing method and water content ensures that the solid amine and additive are fully and uniformly mixed, forming a colloid suitable for roller coating, ensuring a smooth coating process and uniform coating results.
[0028] In the present invention, a colloid containing an organic amine is squeezed onto inorganic fiber paper through two rollers for gluing. The gluing pressure is between 0.1 MPa and 2 MPa, preferably between 0.2 MPa and 1 MPa, and more preferably between 0.25 MPa and 0.8 MPa. Controlling the pressure within this range allows the solid amine to effectively adhere to the surface of the inorganic fiber paper while also penetrating into gaps in the paper. This avoids insufficient loading due to too low a pressure or sticking due to too high a pressure, ensuring uniform coating and maximum loading. Too low a pressure prevents the organic amine from being loaded, while too high a pressure can cause sticking to the roller surface, affecting coating uniformity.
[0029] In the present invention, after gluing, the inorganic fiber paper needs to be dried and cured. This can be done using infrared heating or hot air drying. The drying temperature is 60-200°C. This temperature range ensures that the solvent in the colloid fully evaporates, allowing the solid amine to firmly solidify on the inorganic fiber paper, while also preventing excessively high temperatures from causing decomposition and degradation of the solid amine, thereby ensuring the adsorption performance of the corrugated paper. A temperature of 80-100°C is preferred. A drying temperature that is too low will result in excessively long drying times, reducing production efficiency; a drying temperature that is too high will cause decomposition and degradation of the organic amine, resulting in reduced carbon dioxide adsorption performance. Drying and curing can be performed separately after gluing on one side of the inorganic fiber paper, or after gluing on both sides. The resulting inorganic fiber paper containing solid amine after drying has a mass fraction of 1-40% organic amine, a mass fraction of 1-10% other additives, and a mass fraction of 50-98% inorganic fiber paper substrate. The mass fraction of each component within this range can make the corrugated paper have good adsorption performance and mechanical strength, ensuring its effectiveness and stability in carbon capture applications.
[0030] In the present invention, the dried and solidified inorganic fiber paper is hot-pressed through corrugating rollers to produce inorganic fiber corrugated paper. The hot-pressing operating temperature is 30-90°C, preferably 40-85°C, and more preferably 45-80°C. Temperatures that are too low make corrugation difficult, while temperatures that are too high can cause decomposition and degradation of the solid amine. The corrugated form of the inorganic fiber corrugated paper is not particularly limited and can be V-shaped, U-shaped, or UV-shaped. U-shaped inorganic fiber corrugated paper is preferred, as it offers a large adhesive bonding area, strong bonding, and excellent impact resistance. The flute shape of the inorganic fiber corrugated paper is not particularly limited and can be common A, C, B, E, F, or G, or custom flute shapes with specific flute heights and flute counts. Types A, C, and B, with higher flute heights, are preferred, with types A and C, which offer strong impact resistance and are less susceptible to pore blockage, being more preferred. An appropriate hot-pressing temperature allows the inorganic fiber paper to be smoothly formed into a corrugated structure. Selecting the appropriate corrugated form and flute shape increases the adhesive bonding area, enhances bonding strength and impact resistance, and optimizes the adsorption and performance of the corrugated paper.
[0031] In a second aspect, the present invention provides a roll-formed inorganic fiber paper containing solid amines. This fiber paper can be used as a flat layer. When combined with the corrugated layer of inorganic fiber corrugated paper containing solid amines provided in an optional embodiment of the present invention, an inorganic fiber honeycomb containing solid amines can be produced. The flat layer of inorganic fiber paper containing solid amines and the corrugated layer can be directly rolled into a disc-shaped inorganic fiber honeycomb or stacked into a block-shaped inorganic fiber honeycomb. This inorganic fiber paper exhibits uniform solid amine distribution and excellent adhesion. When combined with the corrugated layer, it can form a high-performance inorganic fiber honeycomb for carbon capture.
[0032] In a third aspect, the present invention, in an optional embodiment, provides a carbon dioxide adsorption rotor or drum made from the aforementioned inorganic fiber honeycomb containing solid amine, which can be used for industrial flue gas carbon capture or direct air carbon capture. Leveraging the structural advantages of the inorganic fiber honeycomb and the adsorption properties of the solid amine, this adsorption rotor or drum efficiently captures carbon dioxide, reducing energy consumption and costs for carbon capture.
[0033] In a specific embodiment of the present invention, Figure 1 As shown, the preparation method of the present invention can be carried out through the following steps.
[0034] After mechanically mixing the organic amine, additive, water, or other solvent in a container, the organic amine is further pulverized and mixed in a ball mill to produce a uniformly dispersed gel containing organic amine molecules, which is then placed in silos 6 and 7 for standby use. The inorganic fiber paper substrate is transported via unwinder 1 to roller coater 2. The gel in silo 6 is introduced into roller coater 2, and the pressure of the roller coater is adjusted to coat the inorganic fiber paper with glue. The coated inorganic fiber paper is then transported to an oven 3 equipped with infrared lamps for curing, thereby obtaining inorganic fiber paper coated with organic amine on one side. The inorganic fiber paper is then transported to roller coater 4, and the gel in silo 7 is introduced into roller coater 4. The pressure of the roller coater is adjusted to coat the other side of the inorganic fiber paper with glue. The coated inorganic fiber paper is then transported again to an oven 3 equipped with infrared lamps for curing, thereby obtaining inorganic fiber paper coated with organic amine on both sides. After the double-sided glue is solidified, the inorganic fiber paper is hot-pressed by the corrugating roller 5 to obtain the inorganic fiber corrugated paper containing solid amine.
[0035] The present invention will be described in detail below through examples.
[0036] Synthesis of organic amines: Under a nitrogen atmosphere, 6 kg of N-(3-dimethylaminopropyl)methacrylamide and 0.2 kg of N,N'-methylenebisacrylamide were dissolved in 200 kg of deionized water. 0.15 kg of hexadecyltrimethylammonium bromide was then added and the mixture was stirred at 70°C for 1 hour to obtain mixed solution A. 3.5 kg of N-tert-butylacrylamide was then dropwise dissolved in 5 kg of methanol to obtain solution B. Solution B was added dropwise to mixed solution A and the mixture was stirred at 70°C for 1 hour to obtain mixed solution C. Finally, 0.15 kg of 2,2'-azobisisobutylamidine dihydrochloride was dissolved in 2 kg of aqueous solution to obtain solution D. Solution D was added dropwise to mixed solution C and polymerization was carried out at 70°C for 3 hours to obtain a suspension containing light yellow particles. The suspension was dialyzed against deionized water using a dialysis membrane (MW = 12000-14000) to remove unreacted monomers. After freeze-drying to remove moisture, organic amine E was obtained.
[0037] Carbon dioxide adsorption performance testing: The prepared A-type inorganic fiber corrugated paper containing solid amine (9 cm × 5 cm) was rolled and placed in a quartz glass tube. Air containing 5% CO and 4% H₂O was introduced into one end of the tube at a flow rate of 50 ml / min. After saturated adsorption at 30°C for 30 minutes, the tube was heated to the desired desorption temperature (80°C) and purged with air containing 5% CO₂ and 47% H₂O at a flow rate of 50 ml / min. The CO₂ concentration in the desorbed gas was measured using micro-gas chromatography. The CO₂ adsorption capacity of the inorganic fiber corrugated paper was calculated by integrating the desorption curve.
[0038] Example 1:
[0039] 110g of organic amine E, 6g of auxiliary agent sodium silicate, and 495g of water were mixed and ball-milled for 30min to obtain organic amine gel A with a solid content of 19%. Figure 1 The roller pressing process shown in the figure is to coat the organic amine gel A on the inorganic fiber paper, adjust the roller gap to 0.13mm, the roller speed to 0.07m / min, and the oven and corrugating roller temperature to 80℃. The single-side glue amount of the inorganic fiber corrugated paper A is 0.167g, and the double-side glue amount is 0.33g. The desorption curve obtained from the CO2 adsorption performance test is shown in Figure 2. Figure 2 As shown, the CO2 adsorption capacity is 1.75 mmol / g.
[0040] Example 2:
[0041] 110g of organic amine E, 6g of auxiliary agent sodium silicate, and 495g of water were mixed and ball-milled for 30min to obtain organic amine gel A with a solid content of 19%. Figure 1In the roller pressing process shown, organic amine gel A was coated on inorganic fiber paper, the roller gap was adjusted to 0.1mm, the roller speed was 0.07m / min, and the oven and corrugating roller temperature was set to 80℃. The single-side glue amount of inorganic fiber corrugated paper B was 0.142g, and the double-side glue amount was 0.27g. The desorption curve obtained from the CO2 adsorption performance test is shown in Figure 2. Figure 3 As shown, the CO2 adsorption capacity is 1.59 mmol / g.
[0042] Example 3:
[0043] 110g of organic amine E, 6g of auxiliary agent sodium silicate, and 495g of water were mixed and ball-milled for 30min to obtain organic amine gel A with a solid content of 19%. Figure 1 In the roller pressing process shown, organic amine gel A was coated on inorganic fiber paper, the roller gap was adjusted to 0.15mm, the roller speed was 0.07m / min, and the oven and corrugating roller temperature was set to 80℃. The single-side glue amount of inorganic fiber corrugated paper C was 0.135g, and the double-side glue amount was 0.25g. The desorption curve obtained from the CO2 adsorption performance test is shown in Figure 2. Figure 4 As shown, the CO2 adsorption capacity is 1.50 mmol / g.
[0044] Comparative Example 1:
[0045] 110g of organic amine E, 6g of auxiliary agent sodium silicate, and 495g of water were mixed and ball-milled for 30min to obtain organic amine gel A with a solid content of 19%. Figure 1 In the roller pressing process shown, the organic amine gel A was coated on the inorganic fiber paper, and the gap between the rollers was adjusted to 0.2 mm. It was found that the pressure was insufficient and the organic amine could not adhere to the inorganic fiber paper.
[0046] Comparative Example 2:
[0047] 110g of organic amine E and 1460g of water were mixed and ball-milled for 30min to obtain organic amine gel B with a solid content of 7%. Figure 1 In the roller pressing process shown, the organic amine gel B was coated on the inorganic fiber paper, and the gap between the rollers was adjusted to 0.13 mm. It was found that after the inorganic fiber paper and the organic amine gel were mechanically squeezed, a large amount of water seeped out and the organic amine could not adhere to the inorganic fiber paper.
[0048] Comparative Example 3:
[0049] 110g of organic amine E, 6g of the additive sodium silicate, and 495g of water were mixed and ball-milled for 30 minutes to produce organic amine gel A with a solid content of 19%. This gel was applied to inorganic fiber paper using a doctor blade. After drying, the organic amine was found to be detached from the inorganic fiber paper and failed to adhere to the paper.
[0050] Thus, the roller-pressing technology of the present invention, by adjusting the composition of the organic amine gel and the gap between the rollers, can overcome the peeling phenomenon between the organic amine and the inorganic fiber paper in conventional coating processes, effectively loading the organic amine onto the inorganic fiber paper, and producing inorganic fiber corrugated paper containing solid amine. Utilizing this inorganic fiber paper can effectively improve the carbon dioxide adsorption efficiency of an adsorption rotor or drum.
[0051] Although the principles of the present invention have been described in detail above in conjunction with the preferred embodiments of the present invention, those skilled in the art should understand that the above embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. The details in the embodiments do not constitute a limitation on the scope of the present invention. Without departing from the spirit and scope of the present invention, any obvious changes such as equivalent transformations and simple substitutions based on the technical solution of the present invention fall within the scope of protection of the present invention.
Claims
1. A method for forming inorganic fiber corrugated paper containing solid amine, characterized in that: The following steps are involved: After the solid amine and the additive are uniformly mixed into a colloid, the front and back sides of the inorganic fiber paper are coated respectively by roller pressing. After drying and curing, the inorganic fiber corrugated paper containing solid amine is prepared by corrugated roller pressing and shaping.
2. The method for forming corrugated paper containing solid amine according to claim 1, characterized in that: The solid amine is an organic amine containing at least two or more groups of primary amine, secondary amine, and tertiary amine, and has a melting point of 40° C. to 200° C. and / or an average molecular weight of 10,000 to 100,000.
3. The method for forming corrugated paper containing solid amine according to claim 1, characterized in that: The additives include organic additives and / or inorganic additives; the inorganic additives are selected from one or more of sodium silicate, aluminum dihydrogen phosphate, silica sol, aluminum sol, silica-aluminum composite sol, titanium sol, zirconium sol or pseudo-boehmite; the organic additives are selected from one or more of cellulose, polyvinyl alcohol and polyvinyl acetate.
4. The method for forming corrugated paper containing solid amine according to claim 1, wherein: The inorganic fiber paper is selected from one or more of glass fiber, alumina fiber, mullite, kaolin fiber or basalt fiber, and the fiber diameter is 1-5 μm.
5. The method for forming corrugated paper containing solid amine according to claim 1, characterized in that: There are many ways to mix the solid amine and the additive. The first is to mix the solid amine and the additive by mechanical stirring; the second is to mix the solid amine and the additive while crushing them using equipment such as a ball mill; the third is to disperse or dissolve the solid amine and the additive in a liquid medium of water and then mix them by filtering, distilling, etc. to obtain a solid; the mass fraction of water or organic solvent in the colloid containing the organic amine obtained after mixing is 10-60%.
6. The method for forming corrugated paper containing solid amine according to claim 1, wherein: The colloid containing organic amine and the inorganic fiber paper are squeezed and glued by two rollers, and the gluing pressure is above 0.1Mpa and below 2Mpa.
7. The method for forming corrugated paper containing solid amine according to claim 1, characterized in that: After gluing, the inorganic fiber paper is dried and solidified by infrared heating or hot air drying at a temperature of 60-200°C. The inorganic fiber paper containing solid amine obtained after drying contains: an organic amine with a mass fraction of 1-40%; an auxiliary agent with a mass fraction of 1-10%; and an inorganic fiber paper base material with a mass fraction of 50-98%. The dried and solidified inorganic fiber paper is hot-pressed through corrugated rollers to obtain inorganic fiber corrugated paper, wherein the operating temperature of the hot-pressing is 30-90°C.
8. The method for forming inorganic fiber corrugated paper containing solid amine according to claim 1, characterized in that: The waveform of inorganic fiber corrugated paper is V-type, U-type or UV-type; the flute type is one of A, C, B, E, F, G or customized special flute type.
9. A roll-formed inorganic fiber paper containing solid amine, characterized in that: The inorganic fiber paper prepared by the molding method described in any one of claims 1-8 can be used as a flat layer and composited with inorganic fiber corrugated paper containing solid amine as a corrugated layer to prepare an inorganic fiber honeycomb body; the flat layer of inorganic fiber paper containing solid amine and the corrugated layer are directly rolled into a disc-type inorganic fiber honeycomb body, or stacked into a block-shaped inorganic fiber honeycomb body.
10. A carbon dioxide adsorption rotor or drum prepared from the inorganic fiber honeycomb containing solid amine according to claim 9, used for industrial flue gas carbon capture or direct air carbon capture.
Citation Information
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