Trace element removal device and trace element removal system

Abstract

The utility model discloses a trace element removal device and a trace element removal system, the trace element removal device comprises a first pipeline, a second pipeline and a plurality of kettle bodies which are sequentially arranged from front to back, a first valve is arranged at a liquid inlet of each kettle body and is communicated with the first pipeline, and a second valve is arranged at a liquid outlet of each kettle body. Liquid outlets of the kettle bodies are provided with second valves and are communicated with the second pipeline, the liquid outlet of each kettle body is communicated with the liquid inlet of the kettle body adjacent to the liquid outlet of the kettle body behind the liquid outlet through a communicating pipe, each communicating pipe is provided with a third valve, and the liquid inlet of each kettle body except the forefront kettle body is further provided with a fourth valve. A fifth valve is further arranged at the liquid outlet of each kettle body except the rearmost kettle body, and a communicating part of the liquid outlet of each kettle body and the corresponding communicating pipe is located between the corresponding second valve and the fifth valve; therefore, the plurality of kettle bodies can be flexibly switched into a parallel connection state, a series connection state or a series-parallel connection combined state.

Description

Technical Field

[0001] The utility model belongs to the field of chemical equipment, and in particular relates to a trace element removal device and a trace element removal system. Background Art

[0002] OLED organic raw materials or their intermediates usually contain some trace element impurities, and the content of these impurities has a great impact on the final performance of the OLED panel. Taking free chloride ions as an example, although chlorine-containing materials are widely used in OLED, especially chlorine-containing materials are mainly used to regulate key layers such as electron transport layers and hole blocking layers in OLED panel manufacturing, their purity needs to be strictly controlled, especially the free chloride ions in the raw materials. The current method for removing OLED organic raw materials is mainly to use ion exchange resin adsorption equipment for dechlorination, but its removal efficiency is low, and usually many devices are required to perform independent processing to meet the processing flow requirements, but it cannot meet higher removal requirements. Utility Model Content

[0003] In order to solve the above technical problems, one of the purposes of the present invention is to provide a trace element removal device with a simple structure and the ability to flexibly adjust multiple kettles to be connected in series, in parallel or in combination to remove trace elements from materials.

[0004] To achieve the above-mentioned object, the technical solution of the present invention is as follows: A trace element removal device comprises a first pipe, a second pipe and a plurality of kettle bodies, wherein the kettle bodies are filled with ion exchange resin, and the kettle bodies are provided with a liquid inlet and a liquid discharge port. The plurality of kettle bodies are arranged in a front-to-back order, the liquid inlets of the plurality of kettle bodies are all connected to the first pipe, the liquid discharge ports of the plurality of kettle bodies are all connected to the second pipe, and the liquid discharge port of each kettle body is connected to the liquid inlet of the kettle body immediately behind it through a connecting pipe, a first valve is provided at the liquid inlet of each kettle body, a second valve is provided at the liquid discharge port of each kettle body, and a third valve is provided on each connecting pipe. Except for the frontmost kettle body, a fourth valve is further provided at the liquid inlet of each of the remaining kettle bodies, and the connection between its liquid inlet and the corresponding connecting pipe is located between the corresponding first valve and the fourth valve. Except for the rearmost kettle body, a fifth valve is further provided at the liquid discharge port of each of the remaining kettle bodies, and the connection between its liquid discharge port and the corresponding connecting pipe is located between the corresponding second valve and the fifth valve.

[0005] The beneficial effect of the above technical solution is that multiple kettles can be flexibly switched to a parallel state, a series state or a combination of series and parallel states, so as to meet the needs of different processing flow rates and different removal standards. When a larger processing flow rate is required, a parallel mode is adopted for processing; when a higher removal standard is required, a series mode is adopted for processing; and a compromise state can be processed by a combination of series and parallel modes.

[0006] In the above technical solution, at least four kettle bodies are provided.

[0007] The ion exchange resins described in the above technical solution include: cation exchange resins and anion exchange resins, and one type of resin is filled in one type of tank, and one type of resin tanks can be connected in series through pipelines.

[0008] The beneficial effect of the above technical solution is that it can satisfy the processing mode of series and parallel combination.

[0009] In the above technical solution, the liquid inlet of the kettle body is arranged at its upper end, and the liquid discharge port of the kettle body is arranged at its lower end.

[0010] The beneficial effect of the above technical solution is that the anion exchange resin is placed between the liquid inlet and the liquid outlet of the kettle body, thereby achieving a better effect of removing trace elements.

[0011] In the above technical solution, sixth valves are respectively provided at both ends of the first pipeline, and the connection point between the liquid inlets of the multiple kettle bodies and the first pipeline is located between the two sixth valves, one end of the first pipeline serves as the raw material supply end, and the other end of the first pipeline serves as the backwash drainage end; seventh valves are respectively provided at both ends of the second pipeline, and the connection point between the liquid inlets of the multiple kettle bodies and the first pipeline is located between the two sixth valves, one end of the second pipeline serves as the raw material discharge end, and the other end of the second pipeline serves as the backwash water inlet end.

[0012] The beneficial effect of the above technical solution is that the entire trace element removal device can be adjusted to be in a removal operation state or a backwashing state by adjusting the opening and closing states of the sixth valve and the seventh valve.

[0013] The kettle bodies described in the above technical solutions are all made of stainless steel, and the inner walls thereof are coated with an enamel layer.

[0014] The beneficial effect of the above technical solution is that it has good corrosion resistance.

[0015] In the above technical solution, a sampling tube is further provided at the liquid discharge port of each kettle body, and an eighth valve is provided at the sampling tube.

[0016] The beneficial effect of the above technical solution is that it is possible to conveniently take samples from the kettle body to monitor its removal effect.

[0017] The above technical solution also includes multiple online ultraviolet absorption monitors, which correspond one-to-one to the multiple kettle bodies. A bypass pipeline is provided at the discharge port of each kettle body, and each online ultraviolet absorption monitor is connected to the corresponding bypass pipeline.

[0018] The beneficial effect of the above technical solution is that: in this way, the online ultraviolet absorption monitor can be used to monitor whether the corresponding kettle has completed the sample processing (that is, the online ultraviolet absorption monitor is used to monitor the removal end point of the kettle).

[0019] The second purpose of the present invention is to provide a trace element removal system which has a simple structure and can fully remove trace elements from materials.

[0020] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a trace element removal system, comprising a batching tank and the trace element removal device as described above, the batching tank having a liquid outlet, the first pipeline being connected to the liquid outlet of the batching tank, and the batching tank being used to prepare a solution.

[0021] The beneficial effect of the above technical solution is that it can conveniently remove free trace elements in the material.

[0022] The batching tank described in the above technical solution is a stirring tank.

[0023] The beneficial effect of the above technical solution is that it makes the material dissolve better in the solvent.

[0024] In the above technical solution, a flow regulating valve is provided at the liquid outlet of the batching tank.

[0025] The beneficial effect of the above technical solution is that the flow rate of the solution supplied to the trace element removal device can be adjusted by the flow regulating valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of the trace element removal device described in Example 1 of the present utility model;

[0027] Figure 2 This is a schematic structural diagram of the trace element removal device in Example 1 of the present utility model in a parallel state;

[0028] Figure 3 This is a schematic structural diagram of the trace element removal device in Example 1 of the present utility model in a series state;

[0029] Figure 4The structure schematic view of the trace element removal device in series-parallel combined state is shown in the embodiment 1 of the utility model.

[0030] Figure 5 The schematic view of the kettle body provided with the sampling pipe is shown in the embodiment 1 of the utility model.

[0031] Figure 6 The structure schematic view of the trace element removal device is shown in the embodiment 2 of the utility model.

[0032] Figure 7 The structure schematic view of the trace element removal device in removal is shown in the embodiment 2 of the utility model.

[0033] Figure 8 The structure schematic view of the trace element removal device in backwashing is shown in the embodiment 2 of the utility model.

[0034] Figure 9 The structure schematic view of the trace element removal system is shown in the embodiment 3 of the utility model.

[0035] In the drawing: 1, first pipeline; 2, second pipeline; 3, kettle body; 31, sampling pipe; 32, bypass loop; 4, communication pipe; 51, first valve; 52, second valve; 53, third valve; 54, fourth valve; 55, fifth valve; 56, sixth valve; 57, seventh valve; 58, eighth valve; 6, on-line ultraviolet absorption monitor; 7, venturi drafter; 100, trace element removal system; 200, batching tank; 300, flow regulating valve. DETAILED DESCRIPTION

[0036] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form; the ordinary technical personnel in this industry can implement the utility model according to the drawing shown in the specification and the above; however, the equivalent changes, such as some changes, modifications and evolution, made by the technical personnel familiar with the professional in the technical scheme range of the utility model without departing from the utility model, using the technical content disclosed above, are the equivalent embodiments of the utility model; meanwhile, any equivalent change, modification and evolution of the above embodiment according to the essential technology of the utility model are still within the protection range of the technical scheme of the utility model.

[0037] Embodiment 1

[0038] As Figures 1-4As shown, this embodiment provides a trace element removal device, including a first pipe 1, a second pipe 2 and a plurality of kettle bodies 3, wherein the kettle body 3 is filled with ion exchange resin, and a liquid inlet and a liquid discharge port are provided on the kettle body 3. The plurality of kettle bodies 3 are arranged in a front-to-back order, and the liquid inlets of the plurality of kettle bodies 3 are all connected to the first pipe 1, and the liquid discharge ports of the plurality of kettle bodies 3 are all connected to the second pipe 2, and the liquid discharge port of each kettle body 3 is connected to the liquid inlet of the kettle body 3 immediately behind it through a connecting pipe 4, and a first valve 51 is provided at the liquid inlet of each kettle body 3, a second valve 52 is provided at the liquid discharge port of each kettle body 3, and a third valve 53 is provided on each connecting pipe 4. Except for the frontmost kettle body 3, the remaining kettle bodies 3 A fourth valve 54 is also provided at the liquid inlet of the kettle, and the connection between the liquid inlet and the corresponding connecting pipe 4 is located between the first valve 51 and the fourth valve 54. Except for the last kettle 3, the discharge port of each remaining kettle 3 is also provided with a fifth valve 55, and the connection between the discharge port and the corresponding connecting pipe 4 is located between the second valve 52 and the fifth valve 55. In this way, multiple kettles can be flexibly switched to a parallel state, a series state, or a combination of series and parallel states, so as to meet the needs of different treatment flow rates and different removal standards. When a larger treatment flow rate is required, a parallel mode is used for treatment. When a higher removal requirement is required, a series mode is used for treatment. A compromise state can be a combination of series and parallel modes for treatment. The ion exchange resin in this embodiment can be a cation exchange resin or an anion exchange resin. Specifically, if this embodiment is in a series state or a series-parallel state, it can be considered to connect the kettle containing the cation exchange resin and the kettle containing the anion exchange resin in series, so as to remove different components.

[0039] In the above technical solution, at least four kettle bodies 3 are provided, so that the processing can be carried out in a series-parallel combination mode.

[0040] In the above technical solution, the liquid inlet of the kettle body 3 is arranged at its upper end, and the liquid discharge port of the kettle body 3 is arranged at its lower end, so that the anion exchange resin is located between the liquid inlet and the liquid discharge port of the kettle body, thereby achieving a better removal effect.

[0041] The kettle body 3 in the above technical solution is made of stainless steel, and its inner wall is coated with an enamel layer, which has good corrosion resistance.

[0042] like Figure 5 As shown, in the above technical solution, a sampling tube 31 is further provided at the discharge port of each kettle body 3, and an eighth valve 58 is provided at the sampling tube 31, so that the kettle body can be sampled conveniently to monitor its removal effect.

[0043] In the trace element removal device of this embodiment, multiple kettles are connected in parallel. Figure 2 As shown, at this time, the third valve on each of the connecting pipes is in a closed state, while the first valve, the second valve, the fourth valve and the fifth valve are all in an open state;

[0044] In the trace element removal device of this embodiment, multiple kettles are connected in series. Figure 3 As shown, at this time, the first valve, the second valve and the third valve are all in the open state, while the fourth valve and the fifth valve are both in the closed state.

[0045] In the trace element removal device of this embodiment, multiple kettles are connected in series and parallel. Figure 4 As shown, the multiple kettles on each side of the dotted line L are in a series state, and the kettles on both sides of the dotted line L are combined to form a parallel state as a whole (all the first valves and the second valves are open, and part of the third valve, part of the fourth valve and part of the fifth valve are in an open state).

[0046] exist Figure 1 On the basis of Figure 2-Figure 4 A missing valve indicates that the valve is open.

[0047] In order to increase the flow rate of the fluid in the kettle in this embodiment, it is possible to consider adding a pump body at the first pipeline to pump the material, so as to increase the feed pressure of each kettle.

[0048] In this embodiment, flow meters may be added to the liquid inlet end of the first pipe and the liquid outlet end of the second pipe, and even to the liquid inlet and outlet of each kettle body, so as to facilitate the operation of the entire trace element removal device and the kettle body.

[0049] like Figure 5 As shown, the above technical solution also includes a plurality of online ultraviolet absorption monitors 6 (which belong to the existing technology and are not described here in detail), and the plurality of online ultraviolet absorption monitors 6 correspond one to one to the plurality of kettle bodies 3. A bypass pipe 32 is provided at the discharge port of each kettle body 3, and each online ultraviolet absorption monitor 32 is connected to the corresponding bypass pipe 32. In this way, the online ultraviolet absorption monitor can be used to monitor whether the corresponding kettle body has completed the sample processing (that is, the online ultraviolet absorption monitor is used to monitor the removal end point of the kettle body). In this embodiment, both ends of the bypass loop are connected to the pipeline at the discharge port of the kettle body. In order to make the bypass pipe have a better drainage pressure, a venturi drain 7 can be further provided at the connection between the discharge end of the bypass pipe and the discharge port of the kettle body.

[0050] Example 2

[0051] like Figure 6-Figure 8As shown in the technical solution, the two ends of the first pipeline 1 are respectively provided with sixth valves 56, and the liquid inlets of the plurality of kettle bodies 3 are located between the two sixth valves 56 in communication with the first pipeline 1, one end of the first pipeline 1 is used as a raw material supply end, and the other end of the first pipeline 1 is used as a backwashing drainage end; the two ends of the second pipeline 2 are respectively provided with seventh valves 57, and the liquid inlets of the plurality of kettle bodies 3 are located between the two sixth valves 56 in communication with the first pipeline 1, one end of the second pipeline 2 is used as a raw material discharge end, and the other end of the second pipeline 2 is used as a backwashing water inlet, so that the opening and closing states of the sixth valves and the seventh valves are adjusted to adjust the entire trace element removal device to be in a removal operation state or a backwashing state, and the two sixth valves and the two seventh valves are selectively opened.

[0052] Figure 6-Figure 8 A corresponds to the raw material supply end, B corresponds to the backwashing drainage end, C corresponds to the backwashing drainage end, D corresponds to the raw material discharge end, during removal operation, A is fed, D is discharged, and B and C are closed (during removal, the plurality of kettle bodies are in parallel, series or series-parallel combination, which is selected as needed), during backwashing, C is fed, B is drained, and A and D are closed (during backwashing, the plurality of kettle bodies are preferably in parallel mode).

[0053] On the basis of Figure 6 , Figure 7 and Figure 8 the missing sixth valve and the seventh valve indicate that the valve is in an open state.

[0054] Specifically, in the present embodiment, a pump body can be added at A of the first pipeline, and flow meters are added at A and B of the first pipeline and at C and D of the second pipeline.

[0055] Embodiment 3

[0056] As shown in Figure 9 , the present embodiment provides a trace element removal system, which comprises a batching tank 200 and a trace element removal device 100 as described in Embodiment 1 or Embodiment 2, the batching tank 200 has a liquid outlet, the first pipeline 1 is in communication with the liquid outlet of the batching tank 200, and the batching tank 200 is used to prepare a solution, which can conveniently remove trace elements in the material.

[0057] In the technical solution, the batching tank 200 is a stirring tank (further preferably, the batching tank is a stirring tank with heating function, so that the raw material can be more conveniently dissolved), so that the dissolution effect of the material in the solvent is better.

[0058] In the above technical solution, a flow regulating valve 300 is provided at the liquid outlet of the batching tank 200, so that the flow rate of the solution supplied to the trace element removal device can be adjusted by the flow regulating valve.

[0059] The trace element removal system provided in this embodiment can be used to remove free chloride ions in OLED organic raw materials.

[0060] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples provided are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in a very simplified form and are not in exact proportions, and are only used to facilitate and clearly illustrate the embodiments of the present invention.

Claims

1. A trace element removal device, characterized in that: The invention comprises a first pipe (1), a second pipe (2) and a plurality of kettle bodies (3), wherein the kettle bodies (3) are filled with ion exchange resin, and the kettle bodies (3) are provided with a liquid inlet and a liquid outlet, wherein the plurality of kettle bodies (3) are arranged in a front-to-back order, wherein the liquid inlets of the plurality of kettle bodies (3) are all connected to the first pipe (1), and the liquid outlets of the plurality of kettle bodies (3) are all connected to the second pipe (2), and the liquid outlet of each kettle body (3) is connected to the liquid inlet of the kettle body (3) immediately behind it through a connecting pipe (4), and a first valve (51) is provided at the liquid inlet of each kettle body (3), and each kettle body (3) is connected to the liquid outlet of the kettle body (3) immediately behind it. ) is provided with a second valve (52) at the discharge port, and a third valve (53) is provided on each of the connecting pipes (4). Except for the frontmost kettle body (3), a fourth valve (54) is provided at the liquid inlet of each of the remaining kettle bodies (3), and the connection point between its liquid inlet and the corresponding connecting pipe (4) is located between the corresponding first valve (51) and the fourth valve (54). Except for the rearmost kettle body (3), a fifth valve (55) is provided at the discharge port of each of the remaining kettle bodies (3), and the connection point between its liquid inlet and the corresponding connecting pipe (4) is located between the corresponding second valve (52) and the fifth valve (55).

2. The trace element removal device according to claim 1, characterized in that: At least four kettle bodies (3) are provided.

3. The trace element removal device according to claim 1, characterized in that: The liquid inlet of the kettle body (3) is arranged at its upper end, and the liquid outlet of the kettle body (3) is arranged at its lower end.

4. The trace element removal device according to claim 1, characterized in that: Sixth valves (56) are respectively provided at both ends of the first pipe (1), and the connection point between the liquid inlets of the plurality of kettle bodies (3) and the first pipe (1) is located between the two sixth valves (56), one end of the first pipe (1) serves as a raw material supply end, and the other end of the first pipe (1) serves as a backwashing drainage end; seventh valves (57) are respectively provided at both ends of the second pipe (2), and the connection point between the liquid inlets of the plurality of kettle bodies (3) and the first pipe (1) is located between the two sixth valves (56), one end of the second pipe (2) serves as a raw material discharge end, and the other end of the second pipe (2) serves as a backwashing water inlet end.

5. The trace element removal device according to claim 1, characterized in that: The kettle body (3) is made of stainless steel, and its inner wall is coated with an enamel layer.

6. The trace element removal device according to claim 1, characterized in that: A sampling tube (31) is also provided at the liquid discharge port of each kettle body (3), and an eighth valve (58) is provided at the sampling tube (31).

7. The trace element removal device according to claim 1, characterized in that: The system further comprises a plurality of online ultraviolet absorption monitors (6), wherein the plurality of online ultraviolet absorption monitors (6) correspond one-to-one to the plurality of kettle bodies (3), a bypass pipeline (32) is provided at the liquid discharge port of each kettle body (3), and each online ultraviolet absorption monitor (6) is connected to the corresponding bypass pipeline (32).

8. A trace element removal system, characterized in that: The invention comprises a batching tank (200) and a trace element removal device (100) as described in any one of claims 1 to 7, wherein the batching tank (200) has a liquid outlet, the first pipe (1) is connected to the liquid outlet of the batching tank (200), and the batching tank (200) is used to prepare a solution.

9. The trace element removal system according to claim 8, characterized in that: The batching tank (200) is a stirring tank.

10. The trace element removal system according to claim 8, characterized in that: A flow regulating valve (300) is provided at the liquid outlet of the batching tank (200).

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