Modularized membrane module device

Abstract

The invention discloses a modular membrane module device. The apparatus comprises: a plurality of modular units; each modular unit comprises n membrane groups, a plurality of modular units and a plurality of modular units, wherein the number of the membrane groups is n; the split membrane frame is used for fixing the corresponding n membrane groups; the split air pocket is in fluid connection with the n membrane groups; wherein the length of the split membrane frame and the length of the split air bag are designed according to the total width of the n membrane groups. Through the modular split design, a plurality of modular units can be prefabricated in a workshop at the same time, and the production cycle is shortened; the modular units are moderate in size and convenient to transport and hoist on site, the connecting pieces are simple in structure and can be quickly connected on site, and the modular units are high in structural rigidity, uniform in stress and not prone to deformation in the transportation and installation process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of membrane separation nitrogen production device, in particular to a modular membrane group device. BACKGROUND

[0002] The membrane group part of the existing large-scale membrane separation nitrogen production device usually adopts a whole structure design, that is, a large number of membrane groups are fixed on an integrated membrane rack, and are matched with large gas distribution gas bags, gas collection gas bags and permeation gas bags.

[0003] Due to the large membrane rack and gas bag structure caused by a large number of membrane groups, it is difficult to produce and assemble in the actual production process, and it is easy to deform, which is the main factor affecting the standardization and efficient production of the membrane separation device.

[0004] Therefore, a modular design scheme is needed to split the whole structure into several standardized modules to reduce the manufacturing and assembly difficulty, improve the standardization level, and realize flexible expansion of the device capacity. SUMMARY

[0005] The modular membrane group device provided in the embodiments of the present application solves the problem of large membrane rack and gas bag structure in the prior art, which is difficult to produce and assemble in the actual production process, and is easy to deform.

[0006] To achieve the above-mentioned purpose, the present application provides a modular membrane group device, wherein the device comprises: a plurality of modular units; each of the modular units comprises: a membrane group, the membrane group is provided with n branches; a split membrane rack, the split membrane rack is used for fixing the corresponding n branches of the membrane group; a split gas bag, the split gas bag is in fluid connection with the n branches of the membrane group; wherein the length of the split membrane rack and the length of the split gas bag are designed according to the total width of the n branches of the membrane group.

[0007] Optionally, each of the modular units further comprises: a connecting piece; the connecting piece is provided with n; the n connecting pieces are connected with the n branches of the membrane group correspondingly.

[0008] Optionally, the split gas bag comprises: a gas distribution gas bag, a gas collection gas bag and a permeation gas bag; the gas collection gas bag, the permeation gas bag and the gas distribution gas bag are sequentially arranged at the top, the middle and the bottom of the n branches of the membrane group.

[0009] Optionally, the split membrane rack comprises: a plurality of horizontal racks, a first vertical rack and a second vertical rack which are fixedly connected; the n branches of the membrane group are sequentially arranged and fixed on the plurality of horizontal racks.

[0010] Optionally, the length of the horizontal rack is designed according to the total width of the n branches of the membrane group after arrangement.

[0011] Optionally, the material of the split membrane rack is metal.

[0012] Optionally, the split gas pockets of two adjacent modular units are connected.

[0013] Advantages of the present application:

[0014] The present application provides a modular membrane group device, which can simultaneously prefabricate multiple modular units in the workshop through modular split design, thereby shortening the production cycle; the modular unit has moderate volume, facilitating transportation and on-site hoisting; the connecting piece has simple structure and can be quickly connected on site; the modular unit has high structural rigidity and uniform stress, and is not prone to deformation during transportation and installation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a front view of multiple modular units provided by an embodiment of the present application;

[0016] Figure 2 is a top view of multiple modular units provided by an embodiment of the present application;

[0017] Figure 3 is a front view of a single modular unit provided by an embodiment of the present application.

[0018] SYMBOL DESCRIPTION:

[0019] Membrane group-1, split membrane frame-2, split gas pocket-3, connecting piece-4, gas distribution gas pocket-31, gas collection gas pocket-32, and permeation gas pocket-33. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] The membrane group structure of the existing membrane separation nitrogen making device is generally a whole structure, multiple membrane groups are installed on a unified membrane frame, and are matched with large gas distribution gas pockets 31, gas collection gas pockets 32 and permeation gas pockets 33. Although this structure is assembled at one time, it has disadvantages in manufacturing, transportation, installation and expansion.

[0022] Therefore, the present application provides a modular membrane group device, which comprises: multiple modular units; Figure 1 is a front view of multiple modular units provided by an embodiment of the present application; Figure 2 is a top view of multiple modular units provided by an embodiment of the present application; as Figure 1 and Figure 2As shown, the original overall structure is disassembled to form several modular units that can be independently processed, transported and assembled.

[0023] Figure 3 : is a front view of a single modular unit provided by an embodiment of the present invention; Figure 3 As shown, each of the modular units comprises:

[0024] 1. Membrane group 1, wherein the membrane group 1 is provided with n membranes;

[0025] In an optional embodiment, the membrane group 1 is a basic working unit of a modular unit (i.e., a membrane separation unit), and each modular unit is provided with n membrane groups (n is a positive integer, usually 8, 10, 12, etc., determined according to the capacity requirements of the device) for gas separation.

[0026] Each membrane module has a hollow fiber membrane assembly inside, and the outer shell is pressure-resistant and sealed, with air inlet, gas production port and permeation port. The n membrane modules are arranged side by side in a regular array.

[0027] In an optional embodiment, each of the modular units further comprises: a connecting member 4;

[0028] There are n connecting members 4 ; n connecting members 4 are correspondingly connected to n membrane groups.

[0029] 2. Split membrane rack 2, the split membrane rack 2 is used to fix the corresponding n membrane groups;

[0030] The split membrane frame 2 is the main body of the modular unit, and its structural design meets the following requirements:

[0031] Each split membrane frame 2 fixes n membrane groups; the length of the split membrane frame 2 is designed according to the width of the n membrane groups.

[0032] Each split membrane rack 2 comprises a plurality of fixedly connected horizontal racks, a first vertical rack, and a second vertical rack. N membrane modules are sequentially arranged and fixed to the horizontal racks. The first vertical rack is fixedly connected to one end of all the horizontal racks, and the second vertical rack is fixedly connected to the other end of all the horizontal racks. Specifically, the length of the horizontal rack is designed based on the total width of the n membrane modules after arrangement.

[0033] The split membrane frame 2 is formed by welding high-strength metal profiles (such as carbon steel or stainless steel);

[0034] Several fixing fixtures or mounting supports are set in the membrane group installation area to stabilize the membrane group body; reinforcing ribs are set at key stress-bearing parts of the split membrane frame 2 (such as lifting points and the middle of the long side) to prevent deformation during lifting and operation.

[0035] 3. Split air bag 3, said split air bag 3 is fluidically connected to n membrane modules;

[0036] The split air bag 3 includes: an air separation air bag 31, an air collection air bag 32 and a permeation air bag 33;

[0037] The gas collecting bag 32, the permeation bag 33, and the gas separation bag 31 are sequentially arranged at the top, middle, and bottom of the n membrane modules.

[0038] Each modular unit is equipped with a gas distribution bag 31, a gas collection bag 32 and a permeation bag 33 that match the number of its membrane modules, which respectively realize the functions of raw gas distribution, gas production collection and by-product gas discharge:

[0039] Gas distributor 31: Located at the air inlet end (bottom) of the membrane module, it is equipped with multiple outlet branches coaxial with the air inlet of the membrane module. The number of branches is the same as the number of membrane modules.

[0040] Gas collection bag 32: located at the gas production end (top) of the membrane group, collects the nitrogen separated by each membrane group into the outlet pipeline;

[0041] Permeate gas bag 33: Located at the by-product gas end (middle) of the membrane group, it discharges or recycles the permeate side gas.

[0042] Each air bag housing is equipped with ports corresponding to the number of membrane modules. These ports are coaxial with the module inlet and outlet, ensuring a clean airflow path and minimal flow resistance. The length of the split air bag 3 is also designed based on the total width of the n membrane modules to ensure that each port is accurately aligned with the module port.

[0043] When the value of n changes, the lengths of the split membrane frame 2 and the split air bag 3 are adjusted synchronously, but the connection interface standards of the two remain consistent, thereby ensuring that modules of different specifications are interchangeable and combinable.

[0044] Multiple modular units can be quickly connected on site to form an integrated membrane array. Capacity expansion requires only adding the corresponding modules.

[0045] In an optional embodiment, the split air bags 3 of two adjacent modular units are correspondingly connected.

[0046] Specifically, the gas separation bags 31 of two adjacent modular units are connected correspondingly, the gas collection bags 32 are connected correspondingly, and the permeation bags 33 are connected correspondingly.

[0047] The following is described through a specific embodiment:

[0048] The previously large, integrated membrane module structure can be split. For example, a structure consisting of 40 modules can be split into groups of 10 modules. The main components to be split include: the membrane rack, which can be split into smaller modules based on actual production convenience; and the membrane module gas pack 31, gas collection pack 32, and permeation pack 33, which can be split into smaller modules based on the number of modules and the operability of the membrane rack connections.

[0049] Through the above design, the modular membrane group device of this embodiment can achieve rapid design, standardized manufacturing and efficient on-site assembly while meeting different production capacity requirements. In the event of subsequent maintenance or expansion, it is only necessary to add or replace the corresponding module units, without the need for large-scale transformation of the entire system.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A modular membrane group device, characterized in that: include: Multiple modular units; Each of said modular units comprises: A membrane group, wherein the membrane group is provided with n branches; Split membrane rack, the split membrane rack is used to fix the corresponding n membrane groups; A split air bag, wherein the split air bag is fluidically connected to the n membrane modules; The length of the split membrane frame and the length of the split air bag are designed according to the total width of the n membrane groups.

2. The device according to claim 1, characterized in that: Each of the modular units further comprises: a connector; There are n connecting pieces provided; the n connecting pieces are correspondingly connected to the n membrane groups.

3. The device according to claim 1, characterized in that: The split air bag includes: an air separation air bag, an air collection air bag and a permeation air bag; The gas collection bag, the permeation bag and the gas separation bag are sequentially arranged at the top, the middle and the bottom of the n membrane groups.

4. The device according to claim 1, characterized in that: The split membrane frame comprises: a plurality of horizontal frames, a first vertical frame and a second vertical frame that are fixedly connected; The n membrane groups are sequentially arranged and fixed on the multiple horizontal frames.

5. The device according to claim 4, characterized in that: The length of the horizontal frame is designed according to the total width of the n membrane modules after arrangement.

6. The device according to claim 4, characterized in that: The split membrane frame is made of metal.

7. The device according to claim 1, characterized in that: The split air bags of two adjacent modular units are connected accordingly.

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