A hydrophilic zeolite molecular sieve dehumidification wheel module
Patent Information
- Application Number
- CN202521999998.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-09-17
AI Technical Summary
[0004]本发明的目的是针对现有除湿转轮模块在高温高湿工况下吸附量低、吸附材料易脱落的缺陷，提供一种亲水型沸石分子筛除湿转轮模块，通过改进吸附材料层、基材及粘接层的结构与材质，外表面涂敷氧化铝耐磨涂层，实现高吸附量、高稳定性、高耐久性的使用效果
（1）吸附性能显著提升：通过钙离子交换改性工艺，大幅增强13X分子筛的亲水性，解决传统分子筛在某些工况下吸附量低的问题；
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Figure CN224656396U_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of air handling equipment, and in particular relates to a hydrophilic zeolite molecular sieve dehumidification rotor module. Background Technology
[0002] Adsorption dehumidification technology, especially rotary dehumidification technology, is widely used in precision manufacturing, pharmaceutical warehousing, and food processing due to its continuous dehumidification and regeneration capabilities. As the core of a rotary dehumidification system, the adsorbent material's moisture absorption capacity and desorption temperature directly affect the system's performance. However, in high-temperature processes or enclosed environments with high temperatures (e.g., 55°C) and high relative humidity (80%), traditional adsorbents exhibit a significant decrease in adsorption capacity. For example, under such conditions, the equilibrium adsorption capacity of traditional 13X molecular sieves is only 0.238 g / g.
[0003] Currently, commercial dehumidifier rotors mainly use silica gel and molecular sieves as adsorption materials. While their performance differs under normal conditions, both face the challenge of low equilibrium adsorption capacity in high-temperature and high-humidity environments (55℃, 80% relative humidity). Therefore, it is urgent to enhance the hydrophilicity of molecular sieves while maintaining their high-temperature resistance. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing dehumidification rotor modules, such as low adsorption capacity and easy detachment of adsorbent material under high temperature and high humidity conditions, by providing a hydrophilic zeolite molecular sieve dehumidification rotor module. By improving the structure and material of the adsorbent material layer, substrate and adhesive layer, and coating the outer surface with an alumina wear-resistant coating, it achieves high adsorption capacity, high stability and high durability.
[0005] To achieve the above objectives, the present invention provides a hydrophilic zeolite molecular sieve dehumidification rotor module, wherein the hydrophilic zeolite molecular sieve dehumidification rotor module has a cylindrical structure and includes: Substrate body, hydrophilic zeolite molecular sieve layer, alumina wear-resistant coating; The substrate body includes a sinusoidal waveform body and an arc body, which are arranged sequentially to form a sinusoidal honeycomb structure; The outer surface of the substrate body is covered with the hydrophilic zeolite molecular sieve layer; The outer surface of the hydrophilic zeolite molecular sieve layer is completely covered with an alumina wear-resistant coating.
[0006] Preferably, the substrate body is one of alkali-resistant ceramic fiber substrate and alkali-resistant tempered glass fiber substrate.
[0007] The sinusoidal waveform body and the arc body on the substrate body are connected to form several air channels; The cross-sectional shape of the air passage is sinusoidal.
[0008] Preferably, the thickness of the channel wall of the air channel is 0.1-0.2 mm.
[0009] Preferably, the thickness of the hydrophilic zeolite molecular sieve layer is 50-200 μm.
[0010] Preferably, the hydrophilic zeolite molecular sieve layer is a solid powder, which is bonded to the substrate body by the inorganic sol-gel adhesive layer.
[0011] Preferably, the thickness of the alumina wear-resistant coating is 5-10 μm.
[0012] Preferably, the alumina wear-resistant coating is submicron-sized alumina powder with a particle size of 100nm-1μm, which is bonded to the outer surface of the hydrophilic zeolite molecular sieve composite layer by the inorganic sol.
[0013] Preferably, the substrate body has a diameter of 55 mm and a thickness of 20 mm.
[0014] Therefore, the present invention employs the above-mentioned hydrophilic zeolite molecular sieve dehumidification rotor module, which has the following technical advantages: (1) Significantly improved adsorption performance: The hydrophilicity of 13X molecular sieve is greatly enhanced by calcium ion exchange modification process, which solves the problem of low adsorption capacity of traditional molecular sieve under certain working conditions. (2) Strong structural stability: The substrate is made of alkali-resistant fiber, which does not corrode or damage after long-term contact with alkaline molecular sieves, thus extending the service life of the module; the application of inorganic sol binder ensures that the adsorption layer is firmly bonded to the substrate; the application of alumina wear-resistant coating avoids the wear of the adsorption material caused by airflow impact and the efficiency reduction caused by adsorbent material shedding during operation. (3) Wide adaptability: It is especially suitable for high temperature and high humidity scenarios such as fabric drying exhaust gas, which can improve the dehumidification efficiency of the rotary dehumidification system and reduce regeneration energy consumption.
[0015] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description
[0016] Figure 1 This is the equilibrium adsorption curve of the hydrophilic zeolite molecular sieve (calcium ion modified 13X molecular sieve) used in the hydrophilic zeolite molecular sieve dehumidification rotor module of the present invention and the original 13X molecular sieve under the working conditions of 55℃ and 80% relative humidity. Figure 2 This is the adsorption-desorption performance curve of a hydrophilic zeolite molecular sieve dehumidification rotor module of the present invention; Figure 3 This is a physical diagram of the substrate body of the present invention; Figure 4This is a partially enlarged view of a hydrophilic zeolite molecular sieve dehumidification rotor module of the present invention.
[0017] Figure Labels 1. Substrate body; 2. Hydrophilic zeolite molecular sieve layer; 3. Alumina wear-resistant coating. Detailed Implementation
[0018] This invention provides a hydrophilic zeolite molecular sieve dehumidification rotor module, such as... Figure 3 and Figure 4 As shown, the hydrophilic zeolite molecular sieve dehumidification rotor module has a cylindrical structure and includes: a substrate body 1, a hydrophilic zeolite molecular sieve layer 2, and an alumina wear-resistant coating 3.
[0019] The substrate body 1 includes a sinusoidal waveform body and an arc body, which are arranged sequentially to form a sinusoidal honeycomb structure.
[0020] The outer surface of the substrate body 1 is completely covered by the hydrophilic zeolite molecular sieve layer 2, and the outer surface of the hydrophilic zeolite molecular sieve layer is completely covered by the alumina wear-resistant coating 3.
[0021] The core function of the substrate body 1 is to provide physical support for the entire module. The substrate body 1 and the hydrophilic zeolite molecular sieve composite layer 2 are bonded together with inorganic sol to firmly fix the adsorbent material. The hydrophilic zeolite molecular sieve layer 2 comes into contact with the high temperature and high humidity gas to achieve moisture adsorption.
[0022] The substrate body 1 is one of alkali-resistant ceramic fiber substrate or alkali-resistant tempered glass fiber substrate. It is tough and resistant to high temperature, and can withstand the temperature changes in the dehumidification system. It maintains the cylindrical shape of the module with a diameter of 55mm and a thickness of 20mm, and avoids deformation that may cause gas stagnation or leakage.
[0023] The outer surface of the hydrophilic zeolite molecular sieve composite layer 2 is completely covered with an alumina wear-resistant coating 3 by silica sol bonding.
[0024] A hydrophilic zeolite molecular sieve dehumidification rotor module has a sinusoidal waveform body and an arc body connected on the substrate to form several air channels. The cross-sectional shape of the air channels is sinusoidal, and the thickness of the channel wall is 0.1-0.2 mm.
[0025] Excessive thickness of the honeycomb pore wall will increase airflow resistance and lead to increased system energy consumption; if it is too thin, it will not be able to support the weight of the composite layer. Controlling the thickness to 0.1-0.2mm can achieve module lightweighting while ensuring strength, which facilitates continuous rotation of the impeller in the dehumidification system.
[0026] The hydrophilic zeolite molecular sieve layer 2 is made of solid powder with a thickness controlled between 50-200 μm: the powder form can maximize the surface area of the molecular sieve, so that the adsorption sites are fully exposed, and the moderate thickness can improve the adsorption rate and facilitate subsequent desorption and regeneration.
[0027] The alumina wear-resistant coating 3 is made of submicron-sized solid powder with a thickness controlled at 5-10μm, providing excellent wear resistance and will not clog pores under good dispersion.
[0028] Example 1 (1) Turn on the constant temperature water bath and stabilize it at 80℃. Weigh 41.62g of anhydrous calcium chloride and dissolve it in 7.5L of water. Stir for 10min under constant temperature water bath conditions until completely dissolved. Weigh 150g of 13X molecular sieve and slowly add it to the calcium chloride solution. Stir for 6h at a stirring speed of 350r / min. Allow the above mixed suspension to stand, centrifuge, and wash it three times with water. Dry it in a 90℃ forced-air drying oven for 24h and then grind the solid powder to obtain hydrophilic molecular sieve powder. Using this ratio, 130-160g of hydrophilic molecular sieve can be prepared in a single batch. The adsorption performance of the synthesized hydrophilic molecular sieve was tested using a water vapor dynamic adsorption analyzer. See attached... Figure 1 As shown, the 0.05 mol / L calcium chloride solution prepared by this method modifies 13X molecular sieve to an equilibrium adsorption capacity of 0.285 g / g at 55℃ and 80% RH, which is 19.75% higher than the equilibrium adsorption capacity of the original 13X molecular sieve of 0.238 g / g.
[0029] (2) Prepare a silica sol aqueous solution with a silica sol to water mass ratio of 0.05-0.15:1. Add the hydrophilic molecular sieve described in (1) to the silica sol aqueous solution and stir at a speed of 550 r / min. Stop stirring when there are no obvious particles in the suspension. Immerse the glass fiber dehumidifying wheel module with a diameter of 55 mm and a thickness of 20 mm in the above suspension for 1-3 min. After it is completely wetted, take it out and air dry it. After initial air drying, place it in an 80℃ forced-air drying oven for 6 h.
[0030] (3) Prepare an alumina silica sol suspension with a nano-silica sol to water mass ratio of 0.1:1. Place submicron-sized alumina powder in the above solution and mix evenly under stirring at 800 r / min. Place the dried module from (2) into the suspension and immerse it until completely wetted. Then, slowly pull out the alumina silica sol suspension using a lifting method. After initial drying at room temperature, place it in an 80℃ oven for 6 hours. After drying, measure the adsorption capacity at 55℃ and 80%RH in a constant temperature and humidity chamber, and test the desorption performance at 350℃ on an electric heating stage. Figure 2As shown, taking the silica sol to water mass ratios of 0.05:1, 0.1:1 and 0.15:1 as examples, the adsorption capacity is increased by 30.11%, 69.23% and 32.31% respectively, and the resolution rate is 60-95% after 4 minutes.
[0031] Example 2 Turn on the constant temperature water bath and stabilize it at 80℃. Weigh 83.24g of anhydrous calcium chloride and dissolve it in 7.5L of water, stirring for 10 minutes under constant temperature water bath conditions until completely dissolved. Weigh 150g of 13X molecular sieve and slowly add it to the calcium chloride solution, stirring for 6 hours at a stirring speed of 370 rpm. Allow the above mixed suspension to stand, centrifuge, and wash three times with water. After drying in a 90℃ forced-air drying oven for 24 hours, grind the solid powder to obtain hydrophilic molecular sieve powder. Using this ratio, 130-160g of hydrophilic molecular sieve can be prepared in a single batch. The adsorption performance of the synthesized hydrophilic molecular sieve was tested using a water vapor dynamic adsorption analyzer. (See attached image) Figure 1 As shown, the 13X molecular sieve modified with 0.1 mol / L calcium chloride solution prepared by this method can achieve an equilibrium adsorption capacity of 0.260 g / g at 55℃ and 80% RH, which is 9.24% higher than the equilibrium adsorption capacity of the original 13X molecular sieve of 0.238 g / g.
[0032] Example 3 Turn on the constant temperature water bath and stabilize it at 80℃. Weigh 124.86g of anhydrous calcium chloride and dissolve it in 7.5L of water, stirring for 10 minutes under constant temperature water bath conditions until completely dissolved. Weigh 150g of 13X molecular sieve and slowly add it to the calcium chloride solution, stirring for 6 hours at a stirring speed of 400 rpm. Allow the above mixed suspension to stand, centrifuge, and wash three times with water. After drying in a 90℃ forced-air drying oven for 24 hours, grind the solid powder to obtain hydrophilic molecular sieve powder. Using this ratio, 130-160g of hydrophilic molecular sieve can be prepared in a single batch. The adsorption performance of the synthesized hydrophilic molecular sieve was tested using a water vapor dynamic adsorption analyzer. Figure 1 As shown, the 13X molecular sieve modified with 0.15 mol / L calcium chloride solution prepared by this method can achieve an equilibrium adsorption capacity of 0.275 g / g at 55℃ and 80% RH, which is 15.55% higher than the equilibrium adsorption capacity of 0.238 g / g of the original 13X molecular sieve.
[0033] The only key variable in the three examples was the concentration of calcium chloride solution. Other conditions were consistent, including water bath temperature of 80°C, reaction time of 6 hours, drying temperature of 90°C, and molecular sieve dosage of 150g. The experimental results showed that when the concentration was 0.05 mol / L (Example 1), the modified 13X molecular sieve had the highest equilibrium adsorption capacity at 55°C and 80% RH, reaching 0.285 g / g, which was 19.75% higher than the original 13X molecular sieve (0.238 g / g). When the concentration was increased to 0.1 mol / L (Example 2), the equilibrium adsorption capacity decreased to 0.260 g / g, with an increase of only 9.24%. When the concentration was further increased to 0.15 mol / L (Example 3), the equilibrium adsorption capacity slightly increased to 0.275 g / g, with an increase of 15.55%, but it was still lower than the 0.05 mol / L group.
[0034] In this invention, a low-concentration calcium chloride solution (preferably 0.05 mol / L) is more conducive to the efficient replacement of calcium ions with sodium ions in the 13X molecular sieve framework, which can maximize the electrostatic attraction and polarization of water molecules by the molecular sieve. Excessively high concentrations of calcium ions may lead to partial blockage of the molecular sieve pores or excessive ion exchange, thus weakening the adsorption performance.
[0035] Based on the above structure, the specific working steps of the hydrophilic zeolite molecular sieve dehumidification rotor module are as follows: Step 1: Remove residual moisture and trace impurities from the module surface and the pores of the modified molecular sieve; Step 2: The high-temperature and high-humidity gas to be treated flows through the sinusoidal honeycomb channels of the module, and comes into full contact with the "calcium ion modified 13X molecular sieve" on the surface of the substrate, so that the moisture in the gas is adsorbed in the pores. Step 3: After adsorption, the moisture in the gas is significantly removed, and the dry gas is discharged from the dehumidification zone outlet, meeting the low humidity requirements of scenarios such as precision manufacturing and pharmaceutical warehousing.
[0036] Therefore, the hydrophilic zeolite molecular sieve dehumidification rotor module of the present invention significantly improves adsorption performance. Through calcium ion exchange modification, the hydrophilicity of 13X molecular sieve is greatly enhanced, solving the problem of low adsorption capacity of traditional molecular sieves under certain operating conditions. The structural stability is enhanced by coating with an alumina wear-resistant coating, and the substrate is made of alkali-resistant fiber, which does not corrode or damage after long-term contact with alkaline molecular sieves, thus extending the service life of the module. The use of inorganic sol binder ensures a firm bond between the adsorption layer and the substrate, avoiding system blockage or efficiency reduction caused by adsorption material detachment. It has wide adaptability, especially suitable for high temperature and high humidity scenarios such as fabric drying exhaust gas, which can improve the dehumidification efficiency of the rotor dehumidification system and reduce regeneration energy consumption.
[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.
Claims
1. A hydrophilic zeolite molecular sieve dehumidification rotor module, characterized in that, The hydrophilic zeolite molecular sieve dehumidification rotor module has a cylindrical structure and includes: Substrate body, hydrophilic zeolite molecular sieve layer, alumina wear-resistant coating; The substrate body includes a sinusoidal waveform body and an arc body, which are arranged sequentially to form a sinusoidal honeycomb structure; The outer surface of the substrate body is covered with the hydrophilic zeolite molecular sieve layer; The hydrophilic zeolite molecular sieve layer is covered with an alumina wear-resistant coating.
2. The hydrophilic zeolite molecular sieve dehumidification rotor module according to claim 1, characterized in that, The substrate is either an alkali-resistant ceramic fiber substrate or an alkali-resistant tempered glass fiber substrate.
3. The hydrophilic zeolite molecular sieve dehumidification rotor module according to claim 1, characterized in that, The sinusoidal waveform body and the arc body on the substrate body are connected to form several air channels; The cross-sectional shape of the air passage is sinusoidal.
4. The hydrophilic zeolite molecular sieve dehumidification rotor module according to claim 3, characterized in that, The thickness of the air passage wall is 0.1 mm or 0.2 mm.
5. The hydrophilic zeolite molecular sieve dehumidification rotor module according to claim 1, characterized in that, The thickness of the hydrophilic zeolite molecular sieve layer is 50-200 μm; The thickness of the alumina wear-resistant coating is 5-10μm.
6. The hydrophilic zeolite molecular sieve dehumidification rotor module according to claim 5, characterized in that, The hydrophilic zeolite molecular sieve layer is a solid powder that is bonded to the substrate body by an inorganic sol. The alumina wear-resistant coating is made of alumina powder, which is bonded to the outer surface of the hydrophilic zeolite molecular sieve layer by silica sol.
7. The hydrophilic zeolite molecular sieve dehumidification rotor module according to claim 1, characterized in that, The substrate body has a diameter of 55mm and a thickness of 20mm.