A hydrogen peroxide resin column purification equipment and process

Abstract

The application discloses a hydrogen peroxide resin column purification device and process, and belongs to the technical field of hydrogen peroxide purification. The device comprises a purification resin column, a purification pipeline and a regeneration pipeline arranged on the purification resin column. The regeneration pipeline is symmetrical to the purification pipeline in structure. At least two resin layers are arranged in the purification resin column. The at least one resin layer in the purification resin column can be regenerated or replaced independently through the regeneration pipeline and the purification pipeline. The resin in the resin layer can be regenerated or replaced while production is not stopped, the purification efficiency is greatly improved, the resin in the purification resin column is layered, the phenomenon of partial flow is reduced, and the adsorption and exchange efficiency is improved.

Description

Technical Field

[0001] This invention relates to a purification device and process, and more particularly to a reagent-grade hydrogen peroxide resin column purification device and process, belonging to the field of hydrogen peroxide purification technology. Background Technology

[0002] Hydrogen peroxide is an inorganic compound with the chemical formula H₂O₂. Pure hydrogen peroxide is a pale blue, viscous liquid, miscible with water in any proportion. It is a strong oxidizing agent, and its aqueous solution, commonly known as hydrogen peroxide solution, is a colorless and transparent liquid. Hydrogen peroxide has wide applications in textiles, papermaking, chemicals, light industry, pharmaceuticals, electronics, food, and environmental protection.

[0003] In recent years, with the rapid growth in demand for high-purity hydrogen peroxide (such as reagent-grade hydrogen peroxide), the requirements for the impurity content in hydrogen peroxide have become increasingly stringent. High-purity hydrogen peroxide is generally obtained by using inexpensive and readily available industrial-grade hydrogen peroxide products as raw materials, and through a series of purification processes. Industrial-grade hydrogen peroxide contains organic matter, various metallic and non-metallic impurities.

[0004] From the current development trend, distillation, membrane separation, adsorption, and ion exchange resin methods are commonly used methods for hydrogen peroxide purification. Among them, the use of ion exchange resins to purify hydrogen peroxide has always been a research focus and is one of the most widely used methods in production. These methods typically employ multiple resin towers connected in series, using resin adsorption and resin ion exchange for purification. There are many patents in this area. Currently, the published patents regarding hydrogen peroxide ion exchange resin purification methods mainly include the following: 1) using organic carbon adsorption combined with anion and cation exchange; 2) using anion and cation exchange resins combined with mixed-bed ion exchange resins; and 3) using macroporous adsorption resins combined with anion and cation exchange resins.

[0005] However, most existing hydrogen peroxide purification technologies using ion exchange resins cannot achieve continuous production because the exchange capacity of the resin is limited. Therefore, after its exchange capacity is exhausted, it must be regenerated or the system must be shut down and the resin removed for replacement, which affects the efficiency of hydrogen peroxide purification.

[0006] Furthermore, in the ion exchange resin method, 1) under ideal conditions, the liquid to be treated continuously flows downwards through each layer of resin, and its flow trajectory is approximately a straight line. However, due to various reasons (such as resin clumping at the bottom of the exchange column), abnormal flow phenomena such as flow deviation and channeling often occur in actual operation, resulting in low resin utilization, incomplete ion exchange reaction, and low separation efficiency. 2) Under normal circumstances, the ion exchange resin column is relatively high, and the pressure on the resin particles increases continuously from top to bottom. In severe cases, the resin at the bottom may break due to excessive pressure. In addition, the resin layer settles and settles as the liquid to be treated flows downwards, causing the gaps between the ion exchange resin particles to continuously decrease, resulting in problems such as difficult and insufficient resin backwashing. Summary of the Invention

[0007] (a) Technical problems to be solved

[0008] The technical problem to be solved by the present invention is that the existing hydrogen peroxide purification technology using ion exchange resin is difficult to achieve continuous production, resulting in low hydrogen peroxide purification efficiency, and the purification process suffers from problems such as low adsorption and exchange efficiency, flow deviation, and high pressure on resin particles.

[0009] (II) Technical Solution

[0010] To address the aforementioned technical problems, this invention provides a hydrogen peroxide resin column purification apparatus, comprising a purification resin column and purification and regeneration pipelines disposed on the purification resin column, wherein:

[0011] The purification pipeline includes a purification inlet main pipe, purification inlet branch pipes, purification sub-pipes, and purification outlet branch pipes. The purification resin column contains at least two resin layers, with partitions between each pair of resin layers. The inner cavities of the purification resin column above and below the partitions are connected by purification sub-pipes, each including an upper purification sub-pipe and a lower purification sub-pipe. A purification inlet branch pipe is positioned above the uppermost resin layer in the purification resin column, and a purification outlet branch pipe is positioned below the lowermost resin layer. The purification inlet branch pipes, upper purification sub-pipes, lower purification sub-pipes, and purification outlet branch pipes are all connected to the purification inlet main pipe. A purification main valve is installed between the purification inlet branch pipe and adjacent purification sub-pipes, between two adjacent purification sub-pipes, and between the purification outlet branch pipe and adjacent purification sub-pipes on the purification inlet main pipe. Purification sub-pipes are installed on the purification inlet branch pipes, upper purification sub-pipes, lower purification sub-pipes, and purification outlet branch pipes.

[0012] The regeneration pipeline has the same structure as the purification pipeline and is arranged symmetrically to the purification pipeline.

[0013] Furthermore, the regeneration pipeline includes a regeneration inlet main pipe, regeneration inlet branch pipes, regeneration branch pipes, and regeneration outlet branch pipes. The inner cavities of the purified resin columns above and below the baffle are connected through the regeneration branch pipes, which include upper and lower regeneration sub-pipes. A regeneration inlet branch pipe is provided above the uppermost resin layer in the purified resin column, and a regeneration outlet branch pipe is provided below the lowermost resin layer. The regeneration inlet branch pipes, upper regeneration sub-pipes, lower regeneration sub-pipes, and regeneration outlet branch pipes are respectively connected to the regeneration inlet main pipe. A regeneration main valve is provided between the regeneration inlet branch pipe and the adjacent regeneration branch pipe, between two adjacent regeneration branch pipes, and between the regeneration outlet branch pipe and the adjacent regeneration branch pipe on the regeneration inlet main pipe. A regeneration branch valve is provided on the regeneration inlet branch pipe, upper regeneration sub-pipe, lower regeneration sub-pipe, and regeneration outlet branch pipe.

[0014] Furthermore, the purification equipment also includes a water distribution plate. Inside the purification resin column, water distribution plates are respectively installed between the liquid inlet branch pipe of the purification pipeline or regeneration pipeline and the uppermost resin layer, and between the lower branch pipe and the adjacent resin layer.

[0015] Furthermore, a partition is provided below the lowest resin layer in the purified resin column, and the drain branch of the purification pipeline or regeneration pipeline connects to the inner cavity between the lowest resin layer and the partition.

[0016] Furthermore, the purified resin column is provided with replacement holes at both the upper and lower ends corresponding to each resin layer, which are connected to the purified resin column.

[0017] Furthermore, the upper end of the purified resin column is provided with a pressure detection interface and a temperature detection interface.

[0018] Furthermore, the purification equipment includes two sets of purification resin columns connected in series. Each set has three purification resin columns connected in series. The three purification resin columns in the first set are sequentially filled with organic resin, cation-anion mixed resin, and cation-anion mixed resin. The three purification resin columns in the second set are each filled with cation-anion mixed resin. The hydrogen peroxide solution is purified sequentially by passing through the first set of purification resin columns to the second set of purification resin columns before being discharged.

[0019] Furthermore, the anion and cation mixed resins are mixed in a ratio of 1.5:1.

[0020] The present invention also provides a process for purifying hydrogen peroxide using the above-mentioned hydrogen peroxide resin column purification equipment, which includes the following steps:

[0021] S1. Close all main purification valves, open all branch purification valves, and close all main regeneration valves and branch regeneration valves;

[0022] S2. Fill all purified resin columns with the corresponding resin, and ensure that each resin layer in the purified resin column is filled. Close the replacement hole and ensure that the pressure and temperature detectors are accurately installed on the pressure and temperature detection interfaces.

[0023] S3. The industrial-grade hydrogen peroxide raw material is pumped into the first set of purification resin columns through the purification inlet manifold, and the hydrogen peroxide solution coming out of the first set of purification resin columns enters the second set of purification resin columns.

[0024] S4. Collect the hydrogen peroxide solution purified from the second set of purified resin columns.

[0025] Furthermore, purification process control: flow rate ≤ 3m³ 3 / h, pressure ≤0.35Mpa, temperature ≤40℃.

[0026] (III) Beneficial Effects

[0027] The above-described technical solution of the present invention has the following advantages:

[0028] This invention allows for independent regeneration or replacement of the resin layer within the purified resin column without requiring machine shutdown, significantly improving the production efficiency of hydrogen peroxide purification and possessing immense economic value and promising prospects for widespread application.

[0029] During the use of this purification equipment, the resin in the purification resin column is layered, significantly reducing the continuous height of the resin and thus lowering the pressure on the bottom resin particles, preventing them from breaking due to excessive pressure. In addition, it also reduces the sedimentation of the resin layer as it flows downwards with the liquid to be treated, facilitating resin backwashing. Layering the resin in the purification resin column, collecting the liquid to be treated after flowing through each layer, and then immersing it from above the next layer, combined with the water distribution structure, improves adsorption and exchange efficiency, increases resin utilization, and reduces channeling phenomena. This extends resin life, reduces the use of regeneration agents, and lowers the production burden on enterprises.

[0030] This invention promotes a more complete reaction between the liquid to be treated and the resin, reduces the pressure on the lower resin layer, improves the adsorption efficiency of the resin, avoids the continuous accumulation of sediment at the bottom of the resin which could cause column blockage and resin breakage, and also facilitates smooth backwashing during resin regeneration.

[0031] In addition to the technical problems solved by the present invention, the technical features of the technical solutions constituted by the present invention, and the advantages brought about by the technical features of these technical solutions as described above, other technical features of the present invention and the advantages brought about by these technical features will be further explained in conjunction with the accompanying drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the isometric projection of the present invention.

[0034] Figure 2 This is a top view schematic diagram of the present invention.

[0035] Figure 3 This is an isometric schematic diagram of the present invention, showing only the regeneration pipeline or purification pipeline.

[0036] Figure 4 for Figure 3 Top view diagram.

[0037] Figure 5 This is a schematic diagram of the isometric projection of the purified resin column of the present invention.

[0038] Figure 6 This is a schematic cross-sectional view of the resin column used in the present invention.

[0039] In the diagram: 1. Purification resin column; 11. Replacement port; 12. Pressure detection interface; 13. Temperature detection interface; 2. Purification pipeline; 21. Purification inlet main pipe; 22. Purification inlet branch pipe; 23. Upper purification sub-pipe; 24. Lower purification sub-pipe; 25. Purification drain branch pipe; 26. Purification main valve; 27. Purification branch valve; 3. Regeneration pipeline; 31. Regeneration inlet main pipe; 32. Regeneration inlet branch pipe; 33. Upper regeneration sub-pipe; 34. Lower regeneration sub-pipe; 35. Regeneration drain branch pipe; 36. Regeneration main valve; 37. Regeneration branch valve; 4. Resin layer; 5. Baffle plate; 6. Water distribution plate. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection 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 invention based on the specific circumstances.

[0042] Example 1

[0043] like Figures 5-6 As shown: A hydrogen peroxide resin column purification device includes a purification resin column 1, a purification pipeline 2 and a regeneration pipeline 3 disposed on the purification resin column 1 and communicating with its inner cavity, wherein:

[0044] The purification pipeline 2 includes a purification inlet main pipe 21, a purification inlet branch pipe 22, a purification branch pipe, and a purification outlet branch pipe 25. The purification resin column 1 contains three resin layers 4, which are supported by a support plate with densely packed through holes. Each resin layer 4 is spaced apart and separated by a partition 5. The inner cavities of the purification resin column 1 above and below the partition 5 are connected by purification branch pipes. Each purification branch pipe includes an upper purification sub-pipe 23 and a lower purification sub-pipe 24 that are interconnected. A purification inlet branch pipe 22 is positioned above the uppermost resin layer 4 in the purification resin column 1, and the lowermost... A purification drain branch pipe 25 is provided below the resin layer 4. The purification inlet branch pipe 22, the upper purification sub-pipe 23, the lower purification sub-pipe 24 and the purification drain branch pipe 25 are respectively connected to the purification inlet main pipe 21. A purification main valve 26 is provided between the purification inlet branch pipe 22 and the adjacent purification branch pipe, between two adjacent purification branch pipes, and between the purification drain branch pipe 25 and the adjacent purification branch pipe on the purification inlet main pipe 21. A purification branch valve 27 is provided on the purification inlet branch pipe 22, the upper purification sub-pipe 23, the lower purification sub-pipe 24 and the purification drain branch pipe 25.

[0045] The regeneration pipeline 3 has the same structure as the purification pipeline 2 and is symmetrically arranged with it. Specifically, the regeneration pipeline 3 includes a regeneration inlet main pipe 31, a regeneration inlet branch pipe 32, a regeneration branch pipe, and a regeneration outlet branch pipe 35. The inner cavities of the purification resin columns 1 above and below the partition 5 are connected by the regeneration branch pipe, which includes an upper regeneration sub-pipe 33 and a lower regeneration sub-pipe 34. The regeneration inlet branch pipe 32 is arranged above the uppermost resin layer 4 in the purification resin column 1, and the regeneration outlet branch pipe 35 is arranged below the lowermost resin layer 4. The upper regeneration sub-pipe 33, the lower regeneration sub-pipe 34, and the regeneration drain branch pipe 35 are respectively connected to the regeneration inlet main pipe 31. A regeneration main valve 36 is respectively installed on the regeneration inlet main pipe 31 between the regeneration inlet branch pipe 32 and the adjacent regeneration branch pipe, between two adjacent regeneration branch pipes, and between the regeneration drain branch pipe 35 and the adjacent regeneration branch pipe. A regeneration branch valve 37 is respectively installed on the regeneration inlet branch pipe 32, the upper regeneration sub-pipe 33, the lower regeneration sub-pipe 34, and the regeneration drain branch pipe 35.

[0046] During the use of this purification equipment, if resin replacement or other operations are required, the purification branch valves 27 on the nearest purification branch pipes on both sides of a resin layer 4 can be closed, and then the corresponding purification main valve 26 can be opened. This allows for resin replacement without stopping production. If regeneration is required, after the above operations, simply open the regeneration branch valves 37 on the nearest regeneration branch pipes on both sides of the resin layer 4, and then open all regeneration main valves 36 except for the corresponding regeneration main valve 36, and add regeneration solution for regeneration. At least one resin layer 4 can be independently regenerated or have its resin replaced simultaneously. (To ensure that the purification effect of hydrogen peroxide is not affected during the independent regeneration or other operations of one or more resin layers 4, the operation should be performed before the adsorption or exchange capacity of the resin layer 4 is exhausted. Furthermore, to ensure the purification effect of hydrogen peroxide, it is recommended that no more than two resin layers 4 be regenerated simultaneously.)

[0047] For example:

[0048] (1) If the uppermost resin layer 4 of the purified resin column 1 is to be replaced or regenerated, close the purification inlet branch pipe 22 and the purification branch valve 27 on the upper purification sub-pipe 23 adjacent to the lowermost resin layer 4 of the purified resin column 1 (the purification inlet branch pipe 22 can be closed for a period of time before the upper purification sub-pipe 23 is closed), and open the purification main valve 26 on the purification main pipe 21 corresponding to the uppermost resin layer 4 of the purified resin column 1, located between the purification inlet branch pipe 22 and the upper purification sub-pipe 23 adjacent to the lowermost resin layer 4. At this time, the liquid to be treated bypasses the uppermost resin layer 4 of the purified resin column 1. The upper resin layer 4 is purified by the middle resin layer 4 and the lowermost resin layer 4. Then, open the replacement holes 11 at the upper and lower ends of the purified resin column 1, corresponding to the uppermost resin layer 4, to replace the resin in the uppermost resin layer 4 or perform other operations. Alternatively, without opening the replacement holes 11, open the regeneration inlet branch pipe 32 and the regeneration branch valve 37 on the upper regeneration sub-pipe 33 adjacent to the lower part of the uppermost resin layer 4. Then open all the regeneration main valves 36 on the regeneration main inlet pipe 31 except for the regeneration main valve 36 corresponding to the uppermost resin layer 4, and introduce regeneration liquid for forward and backwashing. After the operation is complete, restore all valves to their initial state.

[0049] (2) To replace or regenerate the resin layer 4 in the middle layer of the purified resin column 1, close the purification branch valves 27 on the lower purification sub-pipe 24 above the middle resin layer 4 and the upper purification sub-pipe 23 below the middle resin layer 4, open the purification main valve 26 corresponding to the middle resin layer 4 (i.e., the purification main valve 26 on the purification inlet main pipe 21 between the previously closed upper purification sub-pipe 23 and lower purification sub-pipe 24), and open the corresponding replacement hole 11 to perform the replacement operation. Alternatively, open the regeneration branch valves 37 on the lower regeneration sub-pipe 34 above the middle resin layer 4 and the upper regeneration sub-pipe 33 below the middle resin layer 4, and open all regeneration main valves 36 except for the regeneration main valve 36 corresponding to the middle resin layer 4 (i.e., the regeneration main valve 36 on the regeneration inlet main pipe 31 between the previously opened upper regeneration sub-pipe 33 and lower regeneration sub-pipe 34), and then perform a non-stop resin regeneration operation. After the operation is completed, restore each valve to its initial state.

[0050] The principle of regenerating or replacing the bottom resin layer 4, or simultaneously regenerating two or more resin layers 4 (when performing regeneration or other operations on two or more resin layers 4 at the same time, it is recommended that the purification resin column 1 be equipped with three or more resin layers 4, that is, at least one resin layer should be in operation) is the same as in Examples (1) and (2).

[0051] When regenerating or replacing resin layer 4 inside the resin column, it is recommended to proceed from top to bottom.

[0052] By stratifying the resin within the purification resin column 1, the continuous height of the resin is significantly reduced, thereby decreasing the pressure on the bottom resin particles and preventing them from breaking due to excessive pressure. In addition, this also mitigates the sedimentation of the resin layer 4 as it flows downwards with the treatment liquid, facilitating resin backwashing. By stratifying the resin within the purification resin column 1, the treatment liquid is collected after flowing through each resin layer 4 and then immersed from above the next resin layer 4. Combined with the water distribution structure, this improves adsorption efficiency and also reduces channeling phenomena.

[0053] Example 2

[0054] This embodiment is a further design based on Embodiment 1. The purification equipment also includes a water distribution plate 6. Water distribution plates 6 are respectively installed between the inlet branch pipe of the purification pipeline 2 or the regeneration pipeline 3 and the uppermost resin layer 4, and between the lower branch pipe and the adjacent resin layer 4 within the purification resin column 1. Water caps (not shown in the attached drawings, conventional existing technology can be used) are provided on the water distribution plates 6 to further reduce flow deviation and improve adsorption efficiency and resin utilization. Furthermore, a resin layer 4 cavity is formed between the water distribution plate 6 and the support plate below the resin layer 4, which can constrain the resin within the resin layer 4, reduce mixing, and ensure gaps between resins. Replacement holes 11, communicating with the purification resin column 1, are respectively provided at the upper and lower ends of each resin layer 4. That is, each resin layer 4 corresponds to two replacement holes 11, the lower replacement hole 11 for removing resin and the upper replacement hole 11 for injecting resin. Furthermore, the upper replacement hole 11 is located below the water distribution plate 6 above the resin layer 4, which prevents the resin from splashing everywhere in the purification column during the resin injection process, and also prevents blockage of the branch pipes of the purification pipeline 2 and the regeneration pipeline 3.

[0055] A baffle 5 is installed below the lowest resin layer 4 inside the purification resin column 1. The drain branch of the purification pipeline 2 or regeneration pipeline 3 connects to the cavity between the lowest resin layer 4 and the baffle 5, reducing the excess space between the lowest resin layer 4 and the lower end of the purification column, facilitating the complete discharge of the liquid to be treated and the regenerated liquid. A pressure detection interface 12 and a temperature detection interface 13 are provided at the upper end of the purification resin column 1, used to detect the temperature and pressure inside the purification column, respectively, to ensure production safety.

[0056] Example 3

[0057] like Figures 1-4As shown: The purification equipment disclosed in this embodiment includes two sets of purification resin columns 1 connected in series. The purification resin columns 1 are the same as those in Embodiments 1 and 2. Each purification resin column 1 is equipped with a purification pipeline 2 and a regeneration pipeline 3 as described in Embodiments 1 and 2. Each set of purification resin columns 1 consists of three purification resin columns 1 connected in series. Between sets and within sets, purification pipelines 2 and regeneration pipelines 3 are connected in series. The three purification resin columns 1 in the first set are sequentially filled with organic resin, a cation-anion mixed resin, and a cation-anion mixed resin. The three purification resin columns 1 in the second set are each filled with a cation-anion mixed resin, which are mixed in a 1.5:1 ratio. The hydrogen peroxide solution is purified sequentially through the first set of purification resin columns 1 and the second set of purification resin columns 1 before being discharged.

[0058] Example 4

[0059] This embodiment discloses a process for purifying hydrogen peroxide using a resin column method with the purification equipment described in Embodiment 3, which includes the following steps:

[0060] S1. Close all purification main valves 26, open all purification branch valves 27, and close all regeneration main valves 36 and regeneration branch valves 37.

[0061] S2. Fill all purification resin columns 1 with the corresponding resin, ensuring that each resin layer 4 in the purification resin column 1 is filled. The resin filled in the same purification resin column 1 is the same (or the resin in different resin layers 4 in the same purification resin column 1 can be different according to the actual production situation. The setting can be made according to the production requirements and the company's strength, while reducing the number of purification resin columns 1). Close the replacement hole 11 and ensure that the pressure detection interface 12 and temperature detection interface 13 are accurately installed with pressure detectors and temperature detectors. Backwash with pure water first and then forward wash until the conductivity of the effluent is about 10us / cm. Drain the pure water and prepare to start the purification of hydrogen peroxide.

[0062] S3. The industrial-grade hydrogen peroxide raw material is pumped into the first set of purification resin columns 1 through the purification inlet manifold 21. An intermediate tank (not shown in the attached figure) can be set between the first set of purification resin columns 1 and the second set of purification resin columns 1. The first set of purification resin columns 1 is used to produce the first-level product. When the material in the intermediate tank reaches 1 ton, the pump of the second set of purification resin columns 1 is turned on to produce the reagent-grade product. The hydrogen peroxide solution coming out of the first set of purification resin columns 1 enters the second set of purification resin columns 1.

[0063] S4. Collect the hydrogen peroxide solution purified from the second set of purified resin column 1 (note the need to test the online conductivity of the product; the conductivity of the first set is ≤650us / cm, and the conductivity of the second set is ≤20us / cm).

[0064] Production process control: Flow rate ≤ 3m 3 / h, pressure ≤0.35Mpa, temperature ≤40℃.

[0065] In embodiments 1-4 above, various control valves can be operated manually or electrically. This invention uses electric valves, and the status of each valve and the working status of each purified resin column 1 are displayed and controlled in real time through a controller. When regeneration of a certain resin layer 4 is required, the corresponding valve is closed or opened electrically, and the accuracy of the operation can be observed on the display screen. In addition, an online conductivity meter is connected to the outlet end of the regeneration pipeline 3 of each purified resin tank, and a temperature meter and a pressure meter are installed at the upper end of the purified resin column 1. The online conductivity meter, temperature meter, and pressure meter are connected to the controller for data display and linkage. The controller, online conductivity meter, temperature meter, and pressure meter mentioned above are all existing technologies, and their installation, connection, control methods, or functions can all be implemented using existing technologies, which will not be described in detail and are not shown in the accompanying drawings.

[0066] Furthermore, in the description of the invention, unless otherwise stated, the terms "multiple," "multiple roots," and "multiple groups" mean two or more, and "several," "several roots," and "several groups" mean one or more. In the description of the invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention 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; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0067] The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A hydrogen peroxide resin column purification device, comprising a purification resin column (1) and a purification pipeline (2) and a regeneration pipeline (3) arranged on the purification resin column (1), characterized in that: the purification pipeline (2) comprises a purification liquid inlet main pipe (21), a purification liquid inlet branch pipe (22), a purification branch pipe and a purification liquid outlet branch pipe (25), at least two layers of resin layers (4) are arranged in the purification resin column (1), and a partition plate (5) is arranged between every two resin layers (4); the inner cavities of the upper and lower purification resin columns (1) are communicated through the purification branch pipe, and the purification branch pipe comprises an upper purification sub-pipe (23) and a lower purification sub-pipe (24); a purification liquid inlet branch pipe (22) is arranged above the uppermost resin layer (4) in the purification resin column (1), and a purification liquid outlet branch pipe (25) is arranged below the lowermost resin layer (4); the purification liquid inlet branch pipe (22), the upper purification sub-pipe (23), the lower purification sub-pipe (24) and the purification liquid outlet branch pipe (25) are respectively communicated with the purification liquid inlet main pipe (21), and purification main valves (26) are respectively arranged on the purification liquid inlet main pipe (21) between the purification liquid inlet branch pipe (22) and the adjacent purification branch pipe, between the adjacent two purification branch pipes and between the purification liquid outlet branch pipe (25) and the adjacent purification branch pipe; purification branch valves (27) are respectively arranged on the purification liquid inlet branch pipe (22), the upper purification sub-pipe (23), the lower purification sub-pipe (24) and the purification liquid outlet branch pipe (25); the regeneration pipeline (3) is the same in structure as the purification pipeline (2) and is arranged in symmetry with the purification pipeline (2). Further comprising a water distribution plate (6), which is arranged between the liquid inlet branch pipe of the purification pipeline (2) or the regeneration pipeline (3) and the uppermost resin layer (4) and between the lower branch pipe and the adjacent resin layer (4) in the purification resin column (1). A partition plate (5) is arranged below the lowermost resin layer (4) in the purification resin column (1), and the liquid outlet branch pipe of the purification pipeline (2) or the regeneration pipeline (3) communicates the inner cavities between the lowermost resin layer (4) and the partition plate (5).

2. The hydrogen peroxide resin-in-pulp purification apparatus of claim 1, wherein: Corresponding to the upper and lower ends of each resin layer (4) in the purification resin column (1), a replacement hole (11) is arranged, which is communicated with the purification resin column (1).

3. The hydrogen peroxide resin-in-pulp purification apparatus of claim 2, wherein: A pressure detection interface (12) and a temperature detection interface (13) are arranged at the upper end of the purification resin column (1).

4. The hydrogen peroxide resin-in-pulp purification apparatus of claim 3, wherein: It comprises two groups of purification resin columns (1) connected in series, each group is provided with three purification resin columns (1) connected in series, the three purification resin columns (1) in the first group are sequentially filled with organic matter resin, mixed anion-cation resin and mixed anion-cation resin, and the three purification resin columns (1) in the second group are all filled with mixed anion-cation resin, and the hydrogen peroxide solution is sequentially purified through the first group of purification resin columns (1) to the second group of purification resin columns (1) and then discharged.

5. The hydrogen peroxide resin-in-pulp purification apparatus of claim 4, wherein: The mixed anion-cation resin is mixed at a ratio of 1.5:

1.

6. The hydrogen peroxide resin-in-pulp purification apparatus of claim 5, wherein: It comprises the following steps:

7. The hydrogen peroxide resin-in-pulp purification apparatus of claim 6, wherein: S1, close all purification main valves (26), open all purification branch valves (27), close all regeneration main valves (36) and regeneration branch valves (37).

8. The purification process of a hydrogen peroxide resin column purification apparatus according to any one of claims 1 to 7, characterized in that: ​ ​ S2, all the purification resin column (1) is installed in the corresponding resin, and the purification resin column (1) is installed in each layer of resin layer (4), and the change hole (11) is closed, and the pressure detection instrument and the temperature detection instrument are accurately installed on the pressure detection interface (12) and the temperature detection interface (13); S3, the industrial grade hydrogen peroxide raw material is pumped into the first group of purification resin column (1) through the purification liquid inlet main pipe (21), and the hydrogen peroxide solution out of the first group of purification resin column (1) enters the second group of purification resin column (1); S4, collect the hydrogen peroxide solution after the purification of the second group of purification resin column (1).

9. The apparatus and process for purifying hydrogen peroxide resin-in-pillar according to claim 8, characterized in that: Production process control: flow rate ≤3m³ / h, pressure ≤0.35Mpa, temperature ≤40℃.

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