Novel ion exchange column

Abstract

The utility model discloses a novel ion exchange column which comprises a column body, an exchange liquid inlet, a resin outlet and at least one air inlet are arranged at the bottom of the column body, a filtering device is arranged in the column body, and an emptying port, an exchange liquid outlet, an observation port, a first liquid inlet and a second liquid inlet are arranged at the top of the column body. According to the novel ion exchange column, a liquid inlet mode, a bottom structure and a top structure are improved, and a multi-point blowback system is designed for a column body; and the volume of the exchange column is enlarged, so that the filling amount of single-column resin is increased. Through the improvement, the wall effect and siphonage are effectively avoided, and a resin bed layer is prevented from being tightly pressed and compacted; and the multi-point back-blowing device enables the resin to be washed and regenerated more thoroughly, so that the labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to an ion exchange column, in particular to a novel ion exchange column. Background Art

[0002] At present, in the stone coal vanadium extraction industry, there are two main ways to enrich vanadium pentoxide, namely extraction stripping method and resin adsorption analysis method. In the resin adsorption analysis method for vanadium enrichment, the ion exchange column is the key equipment. Most of the existing ion exchange columns use a simple single-stage exchange column with a simple structure. The exchange liquid enters from the top of the exchange column, passes through the resin bed, and the exchanged liquid flows out from the bottom. The resin filling volume is generally 1-5m 3 .

[0003] A single-stage exchange column is filled with a certain amount of adsorption exchange resin. The filling amount of the resin is generally 1-5m 3 The vanadium-containing liquid flows in from the top, passes through the resin layer and flows out from the bottom. The top is generally open to the atmosphere, and a water distribution cap is installed at the bottom to prevent the resin from escaping. The problem with single-stage exchange columns is that due to the limited amount of resin filled and the single-stage exchange, the wall effect is prone to occur during operation, forming a siphon phenomenon, which causes liquid short-circuiting and leads to a high vanadium concentration in the liquid after adsorption. The occurrence of siphon phenomenon can easily cause the resin bed to become compressed and dense, and incomplete resin regeneration can easily form resin lumps, affecting the resin's exchange capacity. Resin decomposition and regeneration require manual stirring, which is labor-intensive. Utility Model Content

[0004] This utility model provides a new ion exchange column with improved liquid inlet, bottom, and top structures. A multi-point back-flushing system is designed for the exchange column. This increases the column volume, increasing the resin loading capacity per column. These improvements effectively mitigate the vessel wall effect and siphoning, preventing the resin bed from becoming compressed and dense. The multi-point back-flushing system allows for more thorough resin flushing and regeneration, reducing labor intensity.

[0005] The technical solutions provided by this utility model are as follows:

[0006] A novel ion exchange column comprises a column body, wherein the bottom of the column body is provided with an exchange liquid inlet, a resin discharge outlet and at least one air inlet, a filtering device is provided inside the column body, and the top of the column body is provided with a vent, an exchange liquid outlet, an observation port, a first liquid inlet and a second liquid inlet.

[0007] Furthermore, the filtration device includes a filter plate, a filter screen and a pressure plate. The filter plate is fixed above the exchange fluid inlet, the pressure plate is arranged on the filter plate, the filter screen is arranged between the pressure plate and the filter plate, and the pore size of the filter plate is 5-8 mm.

[0008] Furthermore, a cylindrical screen installation opening is provided on the top of the column, a cylindrical screen is installed in the cylindrical screen installation opening, and the sieve hole diameter of the cylindrical screen is 0.5-1 mm.

[0009] Furthermore, a manhole is provided on the side of the column, and supporting legs are installed on the bottom of the column.

[0010] Furthermore, the filling volume of the column is 15m 3 ;

[0011] The aspect ratio of the column is (2-3):1.

[0012] Furthermore, the cylindrical screen is provided with cross reinforcing ribs, and the exchange liquid outlet is provided at the top of the cylindrical screen.

[0013] Furthermore, a reinforcement belt is provided on the outside of the column, and lifting ears are provided on both sides of the column.

[0014] Furthermore, the air inlet includes a first air inlet, a second air inlet and a third air inlet.

[0015] Furthermore, a first spare port and a second spare port are respectively provided at the top and bottom of the column.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The new ion exchange column provided in this application has a larger resin filling capacity and a larger single column filling capacity of 15m 3 , prolonging the resin exchange time, reducing the frequency of analysis, regeneration and washing, reducing the consumption of regeneration agent and analysis solution, and reducing labor intensity.

[0018] 2. The novel ion exchange column provided in this application improves the liquid inlet method, changing the existing downstream to countercurrent, so that the resin floats in the liquid, effectively solving the adverse factors of the liquid wall effect, siphon phenomenon and excessive liquid resistance caused by the dense resin bed.

[0019] 3. The novel ion exchange column provided by this application utilizes multiple stages connected in series and countercurrent exchange to maximize resin saturation, thereby improving resin utilization. Due to the multi-stage adsorption, the vanadium ion concentration in the post-exchange solution is effectively controlled.

[0020] 4. The novel ion exchange column provided in this application incorporates a back-flushing system, which allows for more thorough resin regeneration and washing, effectively resolving the problem of resin agglomeration due to incomplete washing and regeneration, which affects the normal operation of the system. This also allows for a complete transformation of the resin during the regeneration process.

[0021] 5. The novel ion exchange column provided in this application optimizes the filter structure at the bottom and top of the exchange column, thereby extending the service life of the filter and effectively preventing the escape of the resin. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a novel ion exchange column in an embodiment of the present utility model;

[0023] Figure 2 A top view of a novel ion exchange column in an embodiment of the present utility model;

[0024] Figure 3 A bottom view of a novel ion exchange column in an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the cylindrical screen structure of the new ion exchange column in the embodiment of the present utility model.

[0026] The reference numerals are as follows:

[0027] 1-support leg, 2-filter plate, 3-filter screen, 4-pressing plate, 5-column, 6-reinforcement belt, 7-lifting ear, 8-observation port, 9-cylindrical screen, 901-cross reinforcement rib, 902-sieve hole, 10-cylindrical screen installation port, 11-vent, 12-first liquid inlet, 13-second liquid inlet, 14-first spare port, 15-manhole, 16-resin discharge port, 17-first air inlet, 18-second air inlet, 19-third air inlet, 20-second spare port, 21-exchange liquid inlet, 22-exchange liquid outlet. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the embodiments described below are part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the detailed description of the embodiments of the present application provided below in conjunction with the accompanying drawings is intended to represent only selected embodiments of the present application and is not intended to limit the scope of protection claimed in the present application. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present application without making any creative efforts shall fall within the scope of protection claimed in the present application.

[0030] It should be understood that in the description of the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the embodiments of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0031] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two elements or an interaction between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0032] See Figure 1-Figure 3 The present application provides a novel ion exchange column, comprising a column body 5, at the bottom of which an exchange liquid inlet 21, a resin discharge outlet 16 and at least one air inlet are provided, a filtering device is provided inside the column body 5, and a vent 11, an exchange liquid outlet 22, an observation port 8, a first liquid inlet 12 and a second liquid inlet 13 are provided at the top 5 of the column body.

[0033] The first liquid inlet 12 and the second liquid inlet 13 are used to introduce regenerant, desorption solution, and washing solution as needed. The vanadium pentoxide exchange solution enters through the exchange solution inlet 21 at the bottom and exits through the exchange solution outlet 22 at the top in a countercurrent manner. During use, multiple stages of ion exchange columns can be connected in series, with countercurrent exchange employed to maximize resin saturation, thereby improving resin utilization. Due to the multi-stage adsorption process, the vanadium ion concentration in the post-exchange solution is effectively controlled.

[0034] Optionally, the filtration device includes a filter plate 2, a filter screen 3 and a pressure plate 4, the filter plate 2 is fixed above the exchange liquid inlet 21, the pressure plate 4 is arranged on the filter plate 2, the filter screen 3 is arranged between the pressure plate 4 and the filter plate 2, and the pore size of the filter plate 2 is 5-8 mm.

[0035] Optionally, a cylindrical screen installation opening 10 is further provided on the top of the column 5 , and a cylindrical screen 9 is installed in the cylindrical screen installation opening 10 . The sieve holes 902 of the cylindrical screen 9 have a diameter of 0.5-1 mm.

[0036] Optionally, a manhole 15 is provided on the side of the column 5 , and a support leg 1 is installed at the bottom of the column 5 .

[0037] Optionally, the filling volume of column 5 is 15m 3 By enlarging the resin filling capacity, the single column filling volume was enlarged to 15m 3 , prolonging the resin exchange time, reducing the frequency of analysis, regeneration and washing, reducing the consumption of regeneration agent and analysis solution, and reducing labor intensity.

[0038] The aspect ratio of the column 5 is (2-3):1. In this embodiment, the aspect ratio of the column 5 can be set to 2.75:1. The specification of the column 5 is 2000*5500mm.

[0039] Optionally, a cross reinforcement rib 901 is provided in the cylindrical screen 9, and the exchange liquid outlet 22 is provided at the top of the cylindrical screen 9, such as Figure 4 shown.

[0040] Optionally, a reinforcement belt 6 is provided on the outside of the column 5 , and lifting ears 7 are provided on both sides of the column 5 .

[0041] Optionally, the air inlet includes a first air inlet 17, a second air inlet 18, and a third air inlet 19. A back-blowing system is introduced through these three air inlets, thereby achieving more thorough resin regeneration and washing, effectively resolving the problem of resin agglomeration due to incomplete washing and regeneration, which affects the normal operation of the system. This also allows for a complete transformation of the resin during the regeneration process.

[0042] Optionally, a first spare port 14 and a second spare port 20 are respectively provided at the top and bottom of the column 5. The first spare port 14 and the second spare port 20 can be used as installation ports for measuring instruments, or as feed ports or discharge ports according to needs during use.

[0043] The above is only a specific embodiment of the present application, but the scope of protection of this application is not limited to this. Any changes or substitutions within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A novel ion exchange column, characterized in that: It comprises a column, the bottom of which is provided with an exchange liquid inlet, a resin discharge outlet and at least one air inlet, a filtering device is provided inside the column, and the top of the column is provided with a vent, an exchange liquid outlet, an observation port, a first liquid inlet and a second liquid inlet.

2. The novel ion exchange column according to claim 1, characterized in that: The filtration device includes a filter plate, a filter screen and a pressure plate. The filter plate is fixed above the exchange fluid inlet, the pressure plate is arranged on the filter plate, the filter screen is arranged between the pressure plate and the filter plate, and the pore size of the filter plate is 5-8 mm.

3. The novel ion exchange column according to claim 1, characterized in that: A cylindrical screen installation opening is also provided on the top of the column, and a cylindrical screen is installed in the cylindrical screen installation opening. The sieve hole diameter of the cylindrical screen is 0.5-1 mm.

4. The novel ion exchange column according to claim 1, characterized in that: A manhole is provided on the side of the column, and supporting legs are installed on the bottom of the column.

5. The novel ion exchange column according to any one of claims 1 to 4, characterized in that: The filling volume of the column is 15m 3 ; The aspect ratio of the column is (2-3):

1.

6. The novel ion exchange column according to claim 3, characterized in that: The cylindrical screen is provided with cross reinforcing ribs, and the exchange liquid outlet is provided at the top of the cylindrical screen.

7. The novel ion exchange column according to claim 5, characterized in that: A reinforcement belt is provided on the outside of the column, and lifting ears are provided on both sides of the column.

8. The novel ion exchange column according to claim 5, characterized in that: The air inlet includes a first air inlet, a second air inlet and a third air inlet.

9. The novel ion exchange column according to claim 7 or 8, characterized in that: The top and bottom of the column are respectively provided with a first spare opening and a second spare opening.

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