A dehumidifying device based on a perfluorosulfonic acid resin membrane

Abstract

The utility model discloses a kind of dehumidification device based on perfluorosulfonic acid resin membrane, it is related to gas dehumidification technical field, including membrane tube, the outside of membrane tube is equipped with shell, the outer wall of membrane tube is equipped with purging gas passage between the inner wall of shell, the both ends of shell are equipped with end baffle cap, the utility model adopts hollow fiber membrane tube bundle, large specific surface area, mass transfer efficiency is high;Isothermal moisture permeation process, without phase change, compared with condensation method energy consumption is significantly reduced, using the characteristics of perfluorosulfonic acid resin membrane, can realize very low outlet dew point, full solid structure, no moving part, long life, maintenance-free, dehumidification process no liquid water precipitation, put an end to microorganism breeding;Membrane material chemical stability is good, no dust entrainment, ensure the purity of outlet gas, using membrane tube and porous support structure, both ensure large specific surface area, and ensure mechanical strength, high pressure-bearing capacity, strong anti-disturbance ability, guide vane design optimizes airflow distribution, further improves energy efficiency and stability.

Description

Technical Field

[0001] This utility model relates to the field of gas dehumidification technology, specifically a dehumidification device based on a perfluorosulfonic acid resin membrane. Background Technology

[0002] Perfluorosulfonic acid resin is an ionomer with a perfluorocarbon backbone and sulfonic acid side chains, belonging to the strongest known solid superacid materials. It possesses excellent heat resistance, chemical stability, and mechanical strength, and is mainly used in modern chlor-alkali industries and fuel cells.

[0003] Current technologies produce large-volume products, and the proportions of components other than water change during the adsorption process. This invention addresses the issue of removing moisture from the gas without altering its composition or the effective components. Utility Model Content

[0004] This invention provides a dehumidification device based on a perfluorosulfonic acid resin membrane, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dehumidification device based on a perfluorosulfonic acid resin membrane includes a membrane tube, an outer shell is provided on the outside of the membrane tube, a purge air channel is provided between the outer wall of the membrane tube and the inner wall of the outer shell, and end caps are provided at both ends of the outer shell.

[0007] As a preferred embodiment of this utility model, the membrane tube has a hollow fiber structure and is arranged in parallel or spirally wound.

[0008] As a preferred embodiment of this utility model, the membrane tube is provided with a porous support both inside and outside.

[0009] As a preferred technical solution of this utility model, a guide plate is provided on the outer shell inside the purge gas channel.

[0010] As a preferred embodiment of this utility model, a pre-filter is provided on the outer shell.

[0011] The present invention has the following advantages:

[0012] High efficiency and low energy consumption: The hollow fiber membrane bundle has a large specific surface area and high mass transfer efficiency. The isothermal permeation process does not require phase change, which significantly reduces energy consumption compared to the condensation method.

[0013] Deep dehumidification and high reliability: Utilizing the properties of perfluorosulfonic acid resin membranes, extremely low outlet dew point (e.g., less than -40℃) can be achieved. It features an all-solid structure with no moving parts, long service life, and is maintenance-free.

[0014] Absolutely clean and pollution-free: No liquid water is released during the dehumidification process, eliminating the growth of microorganisms. The membrane material has good chemical stability, with no dust entrainment, ensuring the purity of the outlet gas.

[0015] It can be used not only for dehumidifying sulfur dioxide, but also for dehumidifying gases such as oxygen and hydrogen.

[0016] Compact structure and long lifespan: The unique "membrane tube + porous support" structure ensures both a large specific surface area and mechanical strength, high pressure resistance and strong anti-disturbance ability. The baffle design optimizes airflow distribution, further improving energy efficiency and stability. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of this utility model.

[0019] Figure 3 This is an exploded view of the present invention.

[0020] In the diagram: 1. Membrane tube; 2. Outer shell; 3. Purge gas channel; 4. Porous support; 5. Guide plate; 6. Pre-filter; 7. End cap. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Example 1

[0024] Please see Figures 1-3 A dehumidification device based on a perfluorosulfonic acid resin membrane includes a membrane tube 1, an outer shell 2 is provided on the outside of the membrane tube 1, a purge air channel 3 is provided between the outer wall of the membrane tube 1 and the inner wall of the outer shell 2, and end caps 7 are provided at both ends of the outer shell 2.

[0025] The membrane tube 1 has a hollow fiber structure and is arranged in parallel or spirally wound. Specifically, the design of the membrane tube can increase the membrane area per unit volume and improve dehumidification efficiency.

[0026] Both the inside and outside of the membrane tube 1 are provided with porous supports 4. Specifically, the porous supports 4 are woven mesh or sintered porous tubes. The porous supports 4 are used to prevent the membrane tube from collapsing or deforming, and to improve the pressure resistance and service life.

[0027] A guide plate 5 is provided on the outer shell 2 within the purge gas channel 3. Specifically, the guide plate 5 is used to make the purge gas form turbulent or uniform laminar flow on the outer wall surface of the membrane tube 1, thereby enhancing mass transfer efficiency, avoiding local dead zones, and reducing energy consumption.

[0028] The housing 2 is equipped with a pre-filter 6. Specifically, the pre-filter 6 is used to remove oil mist and particulate matter from the humid gas to be treated, prevent membrane fouling, and extend service life.

[0029] In the implementation of this invention, the humid gas to be treated is introduced into the interior of the membrane tube 1, and the dry purge gas is introduced into the purge gas channel 3. The gas exchanges with the humid gas in the membrane tube 1 in a countercurrent or cross-flow manner. By utilizing the selective permeability of the membrane tube 1 to water molecules, water molecules permeate from the humid gas side to the purge gas side. The dry target gas is obtained from the outlet of the membrane tube 1, and the purge exhaust gas rich in moisture is discharged from the outlet of the purge gas channel 3.

[0030] This invention offers the advantages of high efficiency and low energy consumption, deep dehumidification and high reliability, absolute cleanliness and pollution-free operation, compact structure and long lifespan. It can be used not only for dehumidifying sulfur dioxide, but also for dehumidifying gases such as oxygen and hydrogen, thus making it widely adaptable.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dehumidification device based on a perfluorosulfonic acid resin membrane, comprising a membrane tube, characterized in that, The membrane tube is provided with an outer shell, and a purge air channel is provided between the outer wall of the membrane tube and the inner wall of the outer shell. Both ends of the outer shell are provided with end caps.

2. The dehumidification device based on a perfluorosulfonic acid resin membrane according to claim 1, characterized in that, The membrane tubes have a hollow fiber structure and are arranged in parallel or spirally wound.

3. The dehumidification device based on a perfluorosulfonic acid resin membrane according to claim 2, characterized in that, The membrane tube is provided with porous supports both inside and outside.

4. The dehumidification device based on a perfluorosulfonic acid resin membrane according to claim 3, characterized in that, The outer casing is equipped with a guide plate located inside the purge air channel.

5. The dehumidification device based on a perfluorosulfonic acid resin membrane according to claim 4, characterized in that, The outer casing is equipped with a pre-filter.

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