An integrated skid-mounted equipment for lithium hydroxide preparation based on bipolar film technology

Abstract

This utility model discloses an integrated skid-mounted lithium hydroxide preparation device based on bipolar membrane technology, belonging to the field of bipolar membrane electrodialysis equipment. It includes: a water tank, a water pump, a filter, a heat exchanger, and a bipolar membrane stack connected in sequence; a power supply cabinet electrically connected to the bipolar membrane stack; an electrical control cabinet electrically connected to both the water pump and the power supply cabinet; and a frame, within which the water tank, water pump, filter, heat exchanger, bipolar membrane stack, power supply cabinet, and electrical control cabinet are detachably connected. It also includes a platform frame connected within the frame, with the water tank and platform frame detachably connected. A limiting rod connected to the frame is also included, abutting against the water tank. Several support rods are included, with the filter detachably connected to the frame via these support rods. A clamp assembly detachably connected to the filter is also included, connecting the clamp assembly to the support rods. The technical advantage of this utility model lies in its ease of installation.

Description

Technical Field

[0001] This utility model relates to bipolar membrane electrodialysis equipment, and more particularly to an integrated lithium hydroxide preparation skid-mounted equipment based on bipolar membrane technology. Background Technology

[0002] Bipolar membrane electrodialysis equipment is a membrane separation device that combines bipolar membranes and electrodialysis. It is mainly used for efficient acid / alkali production, desalination, and resource recovery processes. Its core feature is the use of the water dissociation function of the bipolar membrane to achieve the directional migration of ions and the dissociation of water under the drive of an external electric field, thereby simultaneously completing separation and chemical reaction.

[0003] Because bipolar membrane electrodialysis equipment has many supporting components, it is easy to cause high installation difficulty, especially in high-altitude areas such as Qinghai and Tibet, where supporting components are insufficient and construction conditions are harsh, further increasing the difficulty of installation. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide an integrated skid-mounted equipment for preparing lithium hydroxide based on bipolar film technology, which is easy to install.

[0005] Technical solution:

[0006] An integrated skid-mounted apparatus for preparing lithium hydroxide based on bipolar film technology, comprising:

[0007] The water tank, water pump, filter, heat exchanger, and bipolar membrane stack are connected in a sequential cycle.

[0008] The power cabinet is electrically connected to the bipolar membrane stack;

[0009] An electrical control cabinet that is electrically connected to both the water pump and the power supply cabinet;

[0010] The frame is in which the water tank, water pump, filter, heat exchanger, bipolar membrane stack, power cabinet, and electrical control cabinet can all be detachably connected.

[0011] Optionally, it also includes a platform frame connected within the frame, wherein the water tank and the platform frame are detachably connected.

[0012] Optionally, it may also include a limiting rod connected to the frame, the limiting rod abutting against the water tank.

[0013] Optionally, the filter may also include several support rods, through which it is detachably connected to the frame.

[0014] Optionally, it may also include a clamp assembly detachably connected to the filter, the clamp assembly being connected to the support rod.

[0015] Optional, also includes:

[0016] Several lifting rings are all connected to the top of the frame;

[0017] Several legs are connected to the bottom of the frame.

[0018] Optionally, it may also include several maintenance access channels located within the frame.

[0019] Optionally, it also includes a plurality of walking platforms connected within the frame, with the plurality of walking platforms and the plurality of maintenance channels correspondingly arranged.

[0020] Beneficial effects:

[0021] (1) Since the water tank, water pump, filter, heat exchanger, bipolar membrane stack, power cabinet and electrical control cabinet are all connected in the frame, it is convenient to make the overall integrity of the integrated lithium hydroxide preparation skid-mounted equipment based on bipolar membrane technology in this solution good. Specifically, the water tank, water pump and other components can be connected in the frame in advance. After being transported to the site and placed in place, the external raw liquid pipeline and the product delivery pipeline are connected. With one main power supply, it can be put into use, which is convenient for installation.

[0022] (2) It facilitates the effective protection of components such as water tanks and water pumps by the frame, preventing damage during transportation;

[0023] (3) The maintenance access facilitates maintenance personnel to enter the frame to repair components such as water tanks and water pumps. Attached Figure Description

[0024] Figure 1 This is one of the structural diagrams of the skid-mounted equipment according to Embodiment 1 of this utility model;

[0025] Figure 2 for Figure 1 A partial view of A in the middle;

[0026] Figure 3 This is a second structural diagram of the skid-mounted device according to Embodiment 1 of this utility model;

[0027] Figure 4 This is a wiring diagram of the skid-mounted device according to Embodiment 1 of this utility model;

[0028] In the diagram: 1. Water tank; 2. Water pump; 3. Filter; 4. Heat exchanger; 5. Bipolar membrane stack; 6. Power supply cabinet; 7. Electrical control cabinet; 8. Frame; 81. Platform frame; 82. Limiting rod; 83. Support rod; 84. Clamp assembly; 85. Lifting ring; 86. Support leg; 87. Maintenance passage; 88. Walking platform. Detailed Implementation

[0029] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The terms "first," "second," etc., used in this utility model are provided for the convenience of describing the technical solution of this utility model and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solution of this utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the 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, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict, all of which are within the scope of protection claimed by this utility model.

[0031] Example 1

[0032] like Figures 1-4 This embodiment provides an integrated lithium hydroxide preparation skid-mounted equipment based on bipolar membrane technology, including: a water tank 1, a water pump 2, a filter 3, a heat exchanger 4, and a bipolar membrane stack 5 connected in sequence; a power supply cabinet 6 electrically connected to the bipolar membrane stack 5; an electrical control cabinet 7 electrically connected to both the water pump 2 and the power supply cabinet 6; and a frame 8, in which the water tank 1, water pump 2, filter 3, heat exchanger 4, bipolar membrane stack 5, power supply cabinet 6, and electrical control cabinet 7 can all be detachably connected.

[0033] Specifically, during operation, the raw solution, such as lithium chloride or lithium sulfate solution from the salt lake, is pretreated and purified before entering the water tank 1. It is then transported by the water pump 2, filtered by the filter 3, and then heat-exchanged to 15-40°C by the heat exchanger 4. Next, the raw solution is converted into lithium hydroxide and hydrochloric acid (or sulfuric acid) through the bipolar membrane stack 5. Finally, the lithium hydroxide and hydrochloric acid (or sulfuric acid) are returned to the water tank 1.

[0034] The system includes a water tank 1 for storing the stock solution, lithium hydroxide, and hydrochloric acid (or sulfuric acid). Water tank 1 comprises 3-5 compartments, each for storing a different liquid. The material of water tank 1 can be PP (polypropylene), PPH (homopolymer polypropylene), or PE (polyethylene), etc. A water pump 2 is used to transfer the stock solution. Water pump 2 can be centrifugal, positive displacement, etc., and can be made of polytetrafluoroethylene or super duplex stainless steel. The pump has a head of 10-30m and a flow rate of 3-10m³ / h. 3 / h; Filter 3 is used to filter solid particles in the raw liquid, and the filter 3 can be a screen type, etc.; Heat exchanger 4 is used for heat exchange, and the heat exchanger 4 can be a shell and tube type, plate type, or plate and fin type, etc., preferably a plate type, and the area can be selected from 0.5-5m². 2 The bipolar membrane stack 5 is used to convert the raw solution into lithium hydroxide and hydrochloric acid (or sulfuric acid). It can be locked by screws or hydraulic locking, with hydraulic locking being preferred. The power supply cabinet 6 is used to provide an electric field to the bipolar membrane stack 5. The electrical control cabinet 7 is used to control the water pump 2 and the power supply cabinet 6, etc. Since the water tank 1, water pump 2, filter 3, heat exchanger 4, bipolar membrane stack 5, power supply cabinet 6 and electrical control cabinet 7 are all connected in the frame 8, it is convenient to make the overall integrity of the integrated lithium hydroxide preparation skid-mounted equipment based on bipolar membrane technology good. Specifically, the water tank 1, water pump 2 and other components can be connected in the frame 8 in advance. After being transported to the site and placed in place, they can be connected to the external raw solution pipeline and the product delivery pipeline. With one main power supply, it can be put into use, which is convenient for installation. It also makes it convenient for the frame 8 to effectively protect the water tank 1, water pump 2 and other components to prevent damage during transportation. Furthermore, due to the detachable connection, the disassembly and assembly performance of the water tank 1, water pump 2 and other components is good.

[0035] Furthermore, such as Figure 1 and Figure 3 It also includes a platform frame 81 connected within the frame 8, and the water tank 1 and the platform frame 81 are detachably connected.

[0036] Specifically, the platform frame 81 is used to support the water tank 1, so that the water tank 1 is positioned relatively high, thereby preventing moisture from the ground from damaging the water tank 1.

[0037] Furthermore, such as Figure 1 It also includes a limiting rod 82 connected to the frame 8, and the limiting rod 82 abuts against the water tank 1.

[0038] Specifically, the limiting rod 82 is used to limit the water tank 1, which helps to increase the installation stability of the water tank 1.

[0039] Furthermore, such as Figure 2 It also includes several support rods 83, and the filter 3 is detachably connected to the frame 8 via the support rods 83.

[0040] Specifically, the support rod 83 is used to support the filter 3, so that the filter 3 is positioned relatively high, thereby ensuring a good height match between the filter 3 and the water tank 1.

[0041] Furthermore, such as Figure 2 It also includes a clamp assembly 84 that is detachably connected to the filter 3, and the clamp assembly 84 is connected to the support rod 83.

[0042] Specifically, the clamp assembly 84 is used to provide annular support for the filter 3, thereby increasing the installation stability of the filter 3.

[0043] Furthermore, such as Figure 1 and Figure 3 It also includes: several hanging rings 85, all connected to the top of the frame 8; and several support legs 86, all connected to the bottom of the frame 8.

[0044] Specifically, the lifting ring 85 facilitates the lifting of the integrated lithium hydroxide preparation skid-mounted equipment based on bipolar film technology in this solution by the relevant crane; the support leg 86 helps to prevent the frame 8 from directly contacting the ground, thereby preventing the frame 8 from getting damp and facilitating cleaning directly under the skid-mounted equipment in this solution.

[0045] Furthermore, such as Figure 1 and Figure 3 It also includes several maintenance access channels 87 located within the frame 8.

[0046] Specifically, the maintenance access 87 facilitates maintenance personnel to enter the interior of the frame 8 to perform maintenance on components such as the water tank 1 and the water pump 2.

[0047] Furthermore, such as Figure 1 and Figure 3 It also includes several walking platforms 88 connected within the frame 8, and several maintenance channels 87 are correspondingly set up.

[0048] Specifically, the walking platform 88 is used to carry maintenance personnel.

[0049] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A skid-mounted device for integrated lithium hydroxide production based on bipolar membrane technology, characterized in that, include: The water tank (1), water pump (2), filter (3), heat exchanger (4), and bipolar membrane stack (5) are connected in a sequential cycle. A power supply cabinet (6) electrically connected to the bipolar membrane stack (5); An electrical control cabinet (7) is electrically connected to both the water pump (2) and the power supply cabinet (6); The frame (8) is in which the water tank (1), water pump (2), filter (3), heat exchanger (4), bipolar membrane stack (5), power cabinet (6) and electrical control cabinet (7) can be detachably connected.

2. The on-site equipment for integrated lithium hydroxide preparation based on bipolar membrane technology according to claim 1, characterized in that, It also includes a platform frame (81) connected within the frame (8), and the water tank (1) and the platform frame (81) are detachably connected.

3. The on-site equipment for integrated lithium hydroxide preparation based on bipolar membrane technology according to claim 2, characterized in that, It also includes a limiting rod (82) connected to the frame (8), the limiting rod (82) abutting against the water tank (1).

4. The on-site equipment for integrated lithium hydroxide preparation based on bipolar membrane technology according to claim 1, characterized in that, It also includes several support rods (83), through which the filter (3) is detachably connected to the frame (8).

5. The on-site plant for producing lithium hydroxide monohydrate based on bipolar membrane technology according to claim 4, characterized in that, It also includes a clamp assembly (84) detachably connected to the filter (3), the clamp assembly (84) being connected to the support rod (83).

6. The on-site plant for producing lithium hydroxide monohydrate based on bipolar membrane technology according to claim 1, characterized in that, Also includes: Several lifting rings (85) are all connected to the top of the frame (8); Several legs (86) are connected to the bottom of the frame (8).

7. An integrated lithium hydroxide preparation skid-mounted device based on bipolar membrane technology according to any one of claims 1-6, characterized in that, It also includes several maintenance access channels (87) located within the frame (8).

8. The on-site plant for producing lithium hydroxide monohydrate based on bipolar membrane technology according to claim 7, characterized in that, It also includes a plurality of walking platforms (88) connected within the frame (8), and the plurality of walking platforms (88) and the plurality of maintenance channels (87) are correspondingly arranged.

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