Baffling type feeding ceramic hollow fiber membrane industrial assembly

Abstract

The utility model relates to the technical field of ceramic hollow fiber membrane industrial components, and particularly discloses a baffling type feeding ceramic hollow fiber membrane industrial component which comprises a membrane component shell, a multi-membrane-core sleeve and hollow fiber membrane cores, and at least two layers of hollow fiber membrane cores are placed in the multi-membrane-core sleeve; at least one deflection baffle is arranged between the same layer of hollow fiber membrane cores, and at least two horizontal separation baffles which are arranged in a staggered manner are arranged between two adjacent layers of hollow fiber membrane cores; and communicated bent flow guide channels are formed between the multi-membrane core sleeve and the deflection baffles, between the deflection baffles and between at least two horizontal separation baffles of two adjacent layers. The utility model relates to a baffling type feeding ceramic hollow fiber membrane industrial assembly, which is characterized in that a baffling baffle is additionally arranged in a membrane assembly, the internal structural design of the membrane assembly is improved, a baffling structure is fully utilized to improve fluid distribution of feed liquid in the membrane assembly, the contact time and the contact area of the feed liquid and the membrane surface are increased, and the membrane separation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ceramic hollow fiber membrane industrial components, in particular to a ceramic hollow fiber membrane industrial component with baffled feeding. Background Art

[0002] The statements in this section are merely to provide background technology related to the disclosure of the present utility model and do not necessarily constitute prior art.

[0003] Membrane separation, a technology that exploits the differences in diffusion rates of components within membrane pores to efficiently separate substances, is crucial for promoting the upgrading of traditional industries and facilitating energy restructuring. Currently, membrane separation technology has demonstrated broad application prospects in various industries, including petrochemicals, industrial water treatment, gas separation, and biomedicine, providing strong technical support for the country's implementation of green development and resource recycling concepts.

[0004] As a membrane material, ceramic hollow fiber membranes have attracted widespread attention due to their unique structure and properties. Compared to traditional tubular ceramic membranes, ceramic hollow fiber membranes have higher packing density and permeate flux. Their use in the preparation of molecular sieve membranes can significantly increase permeate flux and reduce membrane equipment costs. They hold great promise for application in organic solvent dehydration and gas separation.

[0005] Chinese patent CN218637023U introduces a tube-in-tube ceramic hollow fiber membrane module. The design of the internal structure of the membrane module effectively improves the fluid flow on the membrane surface and reduces the dead zone within the module. However, in engineering applications, the fluid's contact time with the hollow fiber membrane core is short, and the membrane area cannot be effectively utilized. Further optimization of the internal structure design of the membrane module is needed to improve the fluid distribution within the membrane module, increase the contact time and contact area between the fluid and the membrane, and improve the separation efficiency of the membrane module. Utility Model Content

[0006] In order to overcome the deficiencies of the above-mentioned prior art, the utility model provides a ceramic hollow fiber membrane industrial component with a baffled feed, which is equipped with a baffle plate inside the membrane component, improves the internal structural design of the membrane component, makes full use of the baffle structure to improve the fluid distribution of the feed liquid in the membrane component, increases the contact time and contact area between the feed liquid and the membrane surface, and improves the membrane separation efficiency.

[0007] The technical solution adopted by the present invention is: a ceramic hollow fiber membrane industrial component with a refractory feed, comprising a membrane component shell, a multi-membrane core casing and a hollow fiber membrane core, at least two layers of hollow fiber membrane cores are placed in the multi-membrane core casing; and at least one refractory baffle is arranged between the hollow fiber membrane cores in the same layer, and at least two horizontal partition baffles arranged in an alternating manner are arranged between two adjacent layers of hollow fiber membrane cores; a connecting bending guide channel is formed between the multi-membrane core casing and the refractory baffle, between the refractory baffles and between at least two horizontal partition baffles of two adjacent layers.

[0008] In this technical solution, a barrier is formed between the outside of the multi-membrane core sleeve and the inside of the membrane assembly shell, and a barrier inlet and a barrier outlet are respectively provided near the top and bottom positions of the multi-membrane core sleeve located on the barrier; and water vapor is introduced into the barrier for heating.

[0009] In this technical solution, the membrane assembly shell is located at the top or bottom of the hollow fiber membrane core, and an upper pressure plate and a lower pressure plate are respectively set on the top. The upper pressure plate and the lower pressure plate provide fixed support points for the hollow fiber membrane core so as to fix the hollow fiber membrane core in the multi-membrane core casing.

[0010] In this technical solution, one end of the deflection baffle is connected to the lower pressure plate or fixes the horizontal partition baffle, and the other end of the deflection baffle is suspended in the air, thereby forming a bending point of the guide channel with the horizontal partition baffle or the lower pressure plate.

[0011] In this technical solution, a plurality of through holes are provided near the free end of the deflection baffle to accelerate the flow diversion rate.

[0012] In this technical solution, a guide plate is set at the bending point of a guide channel of the hollow fiber membrane core near the middle layer. One end of the guide plate is located on the horizontal partition baffle, and the other end is located on the deflection baffle to guide the fluid at the bottom to move upward quickly and avoid solute deposition.

[0013] In the present technical solution, the number of baffles arranged between any two layers of the hollow fiber membrane cores is 2-5, thereby effectively increasing the reaction time of the hollow fiber membrane cores.

[0014] In this technical solution, a permeate side outlet is provided at the top of the multi-membrane core casing of the membrane module housing, and a residual material outlet is provided at the bottom of the multi-membrane core casing.

[0015] A seal is provided between the hollow fiber membrane core and the lower pressure plate, and the seal material is one of silicone rubber, fluororubber, EPDM rubber, and polytetrafluoroethylene; one end of the hollow fiber membrane core is an open casting end, and the other end is a closed dead end;

[0016] The hollow fiber membrane core is a composite membrane consisting of a support layer and a separation layer, the support layer is made of one of Al2O3, YSZ, mullite, and SiC, and the separation layer is made of one of molecular sieve membrane, graphene membrane, PVA, and PDMS.

[0017] The distance between the inner wall of the membrane core sleeve and the hollow fiber membrane core is 1 to 100 mm, the number of membrane core sleeves is 1 to 50, the hollow fiber membrane core contains 1 to 300 hollow fiber membranes, the length of the hollow fiber membrane core is 1 to 100 cm, the outer diameter is 2 to 60 cm, and the number of channels of the hollow fiber membrane is 1 to 30.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The hollow fiber membrane core casing of the utility model is provided with a deflection baffle at both ends. The deflection feed design makes the material distribution more uniform, effectively improves the membrane flux and filtration efficiency, and reduces the local high flow rate and concentration polarization phenomenon, significantly reduces the risk of membrane pollution, and extends the service life of the membrane component. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the industrial structure of ceramic hollow fiber membrane components with baffled high-efficiency feeding;

[0021] Figure 2 is a structural diagram of an embodiment of a hollow fiber membrane core 20;

[0022] Figure 3 This is a structural diagram of an embodiment in which the membrane core sleeve 30 is a 4-hole membrane core sleeve;

[0023] Figure 4 This is a structural diagram of an embodiment in which the membrane core sleeve 30 is a 7-hole membrane core sleeve;

[0024] Figure 5 FIG. 1 is a structural diagram of an embodiment of a deflection baffle 70 ;

[0025] Among them: 10-membrane module housing, 11-feed inlet, 12-retentate side outlet, 13-permeate side outlet, 14-residue outlet; 20-hollow fiber membrane core, 21-open casting end, 22-closed dead end; 30-membrane core casing, 31-interlayer outlet, 32-interlayer inlet; 40-lower pressure plate, 50-upper pressure plate, 60-sealing element, 70-baffle, 71-through hole, 72-body, 73-connecting part; 80-drain plate, 90-horizontal partition baffle, 100-interlayer. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the combination or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention. In addition, in the description of the embodiments of the present invention, the device positional relationships such as "up", "down", "front", "back", "left", "right" and the like in all the drawings are based on the directions or positional relationships shown in the accompanying drawings. Figure 1 As standard.

[0028] like Figure 1 As shown, a ceramic hollow fiber membrane industrial component with a refractory feed includes a membrane component housing 10, a multi-membrane core sleeve 30 and a hollow fiber membrane core 20, at least two layers of hollow fiber membrane cores 20 are placed in the multi-membrane core sleeve 30; and at least one refractory baffle 70 is set between the hollow fiber membrane cores 20 of the same layer, and at least two horizontal partition baffles 90 arranged in a staggered manner are set between two adjacent layers of hollow fiber membrane cores 20; a connecting curved guide channel is formed between the multi-membrane core sleeve 30 and the refractory baffle 70, between the refractory baffles 70 and between at least two horizontal partition baffles 90 of two adjacent layers. In the specific implementation process, the refractory baffle 70 may also include the following Figure 5 The body 72 and the connecting portion 73 are shown, wherein the body is the main part thereof and is used for isolation and drainage, and the connecting portion 73 is used for fixing it.

[0029] The utility model provides a manufacturing method for a ceramic hollow fiber membrane industrial component with a refractory and high-efficiency feed as follows: first, a single hollow fiber membrane is encapsulated to prepare a hollow fiber membrane core with a one-way opening, the hollow fiber membrane core is installed in a membrane core casing with a consistent opening shape, the open casting end of the hollow fiber membrane core is fixed with an upper pressure plate and a lower pressure plate, and finally, the hollow fiber membrane core is sealed on all sides.

[0030] In at least one embodiment, a barrier layer 100 is formed between the outside of the multi-membrane core sleeve 30 and the inside of the membrane assembly housing 10, and a barrier layer inlet 31 and a barrier layer outlet 32 ​​are respectively provided near the top and bottom positions of the multi-membrane core sleeve 30 located on the barrier layer 100; and water vapor is introduced into the barrier layer 100 for heating.

[0031] In at least one embodiment, the membrane assembly housing 10 is located at the top or bottom of the hollow fiber membrane core 20, and an upper pressure plate 50 and a lower pressure plate 40 are respectively provided on the top, and the upper pressure plate 50 and the lower pressure plate 40 provide fixed support points for the hollow fiber membrane core 20 so as to fix the hollow fiber membrane core 20 in the multi-membrane core sleeve 30.

[0032] In at least one embodiment, one end of the deflection baffle 70 is connected to the lower pressure plate 40 or fixes the horizontal partition baffle 90, and the other end of the deflection baffle 70 is suspended in the air, thereby forming a bending point of the guide channel with the horizontal partition baffle 90 or the lower pressure plate 40.

[0033] In at least one embodiment, the deflection baffle 70 is provided with a plurality of through holes 71 near the free end to accelerate the diversion rate and improve the turbulent characteristics of the liquid near the bending portion. Due to the presence of the through holes, the material that has just been turned back at the free end flows in a direction parallel to the hollow fiber membrane core 20 and is impacted by a water flow in a vertical direction, thereby further enhancing the turbulence at the bending position and avoiding the deposition of pollutants in the dead corners at the bending position caused by the diversion of the water flow.

[0034] In at least one embodiment, Figure 3 The figure shows a one-way open hollow fiber membrane core 20, in which a drainage plate 80 is provided at a bending point of a guide channel of the hollow fiber membrane core 20 near the middle layer. One end of the drainage plate 80 is located on the horizontal partition baffle 90, and the other end is provided on the deflection baffle 70. Such a structure changes the nearly vertical dead angle between the horizontal partition baffle 90 and the deflection baffle 70, so that in the process of liquid deflection, it is not easy to form a dead angle where the flow slows down and causes the deposition of solutes, etc. In the specific implementation process, the drainage plate can be fixed in this position or can be placed movably. The specific shape is mainly based on the position away from the bottom of the hollow fiber membrane core 20 where impurities are easily deposited and accumulated, or it can be based on the bottom of the hollow fiber membrane core 20 near the middle layer to collect accumulated impurities for easy cleaning.

[0035] The outer diameter of the hollow fiber membrane core 20 is 6.5 cm and the length is 40 cm. It contains 34 four-channel hollow fiber composite membranes, wherein the support layer is α-Al2O3, the separation layer is NaA molecular sieve membrane, and the hollow fiber membrane tube is glaze sealed.

[0036] Two layers of hollow fiber membrane cores are housed within the stainless steel casing. Eight bundles of unidirectional open-ended hollow fiber membrane core elements are placed within a four-hole membrane core casing 30, with four bundles installed in each layer. The open casting end of the upper hollow fiber membrane core is fixedly connected to the upper portion of the membrane core casing via a fixing, while the open casting end of the lower hollow fiber membrane core is fixedly connected to the lower portion of the membrane core casing via a fixing. Upper and lower baffles are located on either side of the membrane core casing to control the flow direction of the liquid. A baffle is placed between the two layers of hollow fiber membrane cores to form a diversion channel sandwich, guiding the flow of the liquid.

[0037] The distance between the hollow fiber membrane core 20 and the inner wall of the membrane core casing 30 is 6 mm. The hollow fiber membrane core and the lower pressure plate are sealed by a silicone rubber O-ring and then fixed by an upper pressure plate to form a ceramic hollow fiber membrane industrial component with baffled high-efficiency feeding. Figure 1 The baffled, high-efficiency feed ceramic hollow fiber membrane industrial module also features a feed inlet 11, a residual liquid outlet 12, a barrier inlet 31, a barrier outlet 32, and two permeate outlets 14. The tube-in-tube ceramic hollow fiber membrane module was used in a vapor permeation test of a 90 wt.% ethanol / water system. During the separation process, steam was introduced into the membrane module's casing and barrier 100 for heating. The results showed that the ethanol concentration in the treated feed solution increased to over 99.5 wt.%, demonstrating excellent separation performance.

[0038] In at least one embodiment, the number of deflection baffles 70 provided between any two layers of the hollow fiber membrane cores 20 is 2-5, thereby effectively increasing the reaction time and area of ​​the hollow fiber membrane cores 20, thereby improving their efficiency.

[0039] In at least one embodiment, a permeate outlet 13 is provided at the top of the multi-membrane core casing 30 of the membrane module housing 10 , and a residual material outlet 14 is provided at the bottom of the multi-membrane core casing 30 .

[0040] In at least one embodiment, a seal 60 is provided between the hollow fiber membrane core 20 and the lower pressure plate 40. The seal 60 is made of one of silicone rubber, fluororubber, EPDM rubber, and polytetrafluoroethylene. One end of the hollow fiber membrane core 20 is an open casting end 21, and the other end is a closed dead end 22. Figure 2 The figure shows a unidirectional open hollow fiber membrane core 20. Both ends of the hollow fiber membrane core 20 are open casting ends 21, and the casting ends are circular. The hollow fiber membrane core 20 has an outer diameter of 10 cm and a length of 40 cm. It contains 120 single-channel hollow fiber ultrafiltration membranes. The hollow fiber membrane tube is potted with ceramic glue. The hollow fiber membrane core (20) is a composite membrane consisting of a support layer and a separation layer. The support layer is composed of one or two materials selected from Al2O3, YSZ, mullite, and SiC. The separation layer is one selected from molecular sieve membrane, graphene membrane, PVA, and PDMS.

[0041] Two layers of hollow fiber membrane cores are installed inside the stainless steel shell. 14 bundles of unidirectional open hollow fiber membrane core elements are placed in the 7-hole membrane core sleeve 30, with 7 bundles of hollow fiber membrane cores installed in each layer. The distance between the hollow fiber membrane core 20 and the inner wall of the membrane core sleeve 30 is 10mm. The hollow fiber membrane core and the lower pressure plate are sealed with a fluororubber O-ring and then fixed by the upper pressure plate, forming a ceramic hollow fiber membrane industrial component with baffled high-efficiency feeding. Figure 1 The baffled, high-efficiency feed ceramic hollow fiber membrane industrial module is also equipped with a feed inlet 11, a retentate outlet 12, a casing interlayer inlet 31, and a casing interlayer outlet 32. The permeate outlet 13 can be connected to a vacuum port to generate negative pressure on the permeate side (not shown). This module was used to treat printing and dyeing wastewater at a high temperature of 95°C, and the results showed that the retention rate of dye molecules in the mixed system can be controlled to above 95%.

[0042] In at least one embodiment, the distance between the inner wall of the membrane core sleeve 30 and the hollow fiber membrane core 20 is 1 to 100 mm, the number of membrane core sleeves is 1 to 50, the hollow fiber membrane core contains 1 to 300 hollow fiber membranes, the length of the hollow fiber membrane core is 1 to 100 cm, the outer diameter is 2 to 60 cm, and the number of channels of the hollow fiber membrane is 1 to 30.

[0043] In at least one embodiment, Figure 3 The figure shows a unidirectional open-type hollow fiber membrane core 20. One end of the hollow fiber membrane core 20 is an open, rounded casting end 21, and the other end is a closed dead end 22. The hollow fiber membrane core 20 has an outer diameter of 7 cm and a length of 45 cm. It contains 34 four-channel hollow fiber composite membranes. The support layer is mullite, and the separation layer is SSZ-13 molecular sieve membrane. The hollow fiber membrane tubes are potted with ceramic glue.

[0044] A layer of hollow fiber membrane core is set inside the stainless steel shell, and 7 bundles of unidirectional open hollow fiber membrane core elements are placed in the 7-hole membrane core sleeve 30. The distance between the hollow fiber membrane core 20 and the inner wall of the membrane core sleeve 30 is 15mm. The hollow fiber membrane core and the lower pressure plate are sealed with an EPDM rubber ring and then fixed by the upper pressure plate to form a ceramic hollow fiber membrane industrial component with baffled high-efficiency feeding. Figure 5 The baffled, high-efficiency feed ceramic hollow fiber membrane industrial module also includes a feed inlet 11, a retentate outlet 12, a casing inlet 31, a casing outlet 32, and a top permeate outlet 14. This module has been used for CO2 / N2 separation, demonstrating good separation efficiency.

[0045] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A ceramic hollow fiber membrane industrial assembly with baffled feed, comprising a membrane assembly housing (10), a multi-membrane core casing (30), and a hollow fiber membrane core (20), characterized in that: Placing at least two layers of hollow fiber membrane cores (20) in the multi-membrane core casing (30); and At least one deflection baffle (70) is provided between the hollow fiber membrane cores (20) of the same layer, and at least two horizontal separation baffles (90) arranged in a staggered manner are provided between two adjacent layers of hollow fiber membrane cores (20); A communicating bending guide channel is formed between the multi-membrane core sleeve (30) and the deflection baffle (70), between the deflection baffles (70), and between at least two horizontal separation baffles (90) of two adjacent layers.

2. The ceramic hollow fiber membrane industrial component with baffled feeding according to claim 1, characterized in that: A barrier layer (100) is formed between the outer side of the multi-membrane core sleeve (30) and the inner side of the membrane assembly housing (10), and a barrier layer inlet (31) and a barrier layer outlet (32) are respectively provided near the top and bottom of the multi-membrane core sleeve (30) located on the barrier layer (100); and water vapor is introduced into the barrier layer (100) for heating.

3. The ceramic hollow fiber membrane industrial component with baffled feeding according to claim 1 or 2, characterized in that: The membrane assembly housing (10) is located on the top or bottom of the hollow fiber membrane core (20), and an upper pressure plate (50) and a lower pressure plate (40) are respectively provided on the top. The upper pressure plate (50) and the lower pressure plate (40) provide fixed support points for the hollow fiber membrane core (20).

4. The ceramic hollow fiber membrane industrial component with baffled feeding according to claim 3, characterized in that: One end of the deflection baffle (70) is fixed to the lower pressure plate (40) or the horizontal partition baffle (90), and the other end of the deflection baffle (70) is suspended in the air, thereby forming a guide channel bending point with the horizontal partition baffle (90) or the lower pressure plate (40).

5. The ceramic hollow fiber membrane industrial component with baffled feeding according to claim 4, characterized in that: The deflection baffle (70) is provided with a plurality of through holes (71) near the free end.

6. The ceramic hollow fiber membrane industrial component with baffled feeding according to claim 4, characterized in that: A guide plate (80) is provided at a bending point of a guide channel of the hollow fiber membrane core (20) close to the middle layer. One end of the guide plate (80) is located on the horizontal partition baffle (90), and the other end is provided on the deflection baffle (70).

7. The ceramic hollow fiber membrane industrial component with baffled feeding according to claim 4, characterized in that: The number of baffles (70) arranged between any two layers of the hollow fiber membrane cores (20) is 2-5.

8. The ceramic hollow fiber membrane industrial component with baffled feeding according to claim 2, characterized in that: A permeate side outlet (13) is provided on the top of the multi-membrane core casing (30) of the membrane module housing (10), and a residual material outlet (14) is provided on the bottom of the multi-membrane core casing (30).

9. The ceramic hollow fiber membrane industrial component with baffled feeding according to claim 4, characterized in that: A sealing member (60) is provided between the hollow fiber membrane core (20) and the lower pressure plate (40), and the sealing member (60) is made of one of silicone rubber, fluororubber, EPDM rubber, and polytetrafluoroethylene; one end of the hollow fiber membrane core (20) is an open casting end (21), and the other end is a closed dead end (22); The hollow fiber membrane core (20) is a composite membrane consisting of a support layer and a separation layer, the support layer is one of Al2O3, YSZ, mullite, and SiC, and the separation layer is one of a molecular sieve membrane, a graphene membrane, PVA, and PDMS.

10. The ceramic hollow fiber membrane industrial component with baffled feeding according to claim 4, characterized in that: The distance between the inner wall of the membrane core sleeve (30) and the hollow fiber membrane core (20) is 1 to 100 mm, the number of membrane core sleeves is 1 to 50, the hollow fiber membrane core contains 1 to 300 hollow fiber membranes, the length of the hollow fiber membrane core is 1 to 100 cm, the outer diameter is 2 to 60 cm, and the number of channels of the hollow fiber membrane is 1 to 30.

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