Diphenylamine reaction product separation device

Abstract

The utility model discloses a diphenylamine reaction product separating device, which relates to the technical field of separating devices and comprises a filtering bin, a feeding pipe fixedly connected to the surface of the filtering bin, a cover plate connected to a top flange of the filtering bin, a discharging pipe fixedly connected to the bottom of the filtering bin, and a supporting ring fixedly connected to the inner wall of the filtering bin. The supporting ring is connected with a separation mechanism used for separating particulate matter, a buckling block fixedly connected with the first filter bag is buckled to separate the first filter bag from the second filter bag, the first filter bag and impurities are taken out of the filter bin, and the third filter bag and the second filter bag are left on the inner side of the filter bin to filter the impurities. After certain impurities are left in the second filter bag, the second filter bag is taken out from the filter bin, and the impurities are intercepted and separated only through the third filter bag, so that the time for installing the filter bags twice can be saved, the operation process is reduced, and the problem that the existing device is not easy to use is solved.

Description

Technical Field

[0001] This utility model relates to the field of separation device technology, and in particular to a diphenylamine reaction product separation device. Background Technology

[0002] During the synthesis of diphenylamine, the reaction products often contain insoluble substances such as polyaniline impurities, aluminum compounds, carbides, and catalyst particles. To obtain high-purity diphenylamine products, it is necessary to effectively separate these insoluble substances and particles.

[0003] Currently, most existing diphenylamine reaction product separation devices achieve their effects using the following technologies;

[0004] Filtration technology: Utilizing filter media to intercept insoluble substances and particulate matter, such as plate and frame filter presses, bag filters, and other equipment.

[0005] Distillation technology: Based on the difference in boiling points of diphenylamine and its impurities, separation is achieved through heating evaporation and condensation reflux, often using vacuum distillation.

[0006] Extraction technology: Select a suitable extractant, extract diphenylamine into the extractant phase according to its different solubility, and then perform phase separation.

[0007] Crystallization technology: including solution crystallization and melt crystallization, which involves changing the conditions to crystallize out diphenylamine and separate it from impurities.

[0008] Membrane separation technology: This technology utilizes the selective permeability of semi-permeable membranes to separate diphenylamine from impurities. It has advantages such as simple operation, but the membranes are expensive and prone to fouling. In actual production, appropriate technologies or combinations are often selected based on specific circumstances.

[0009] Currently, existing separation devices used to separate insoluble substances and particulate matter from diphenylamine reaction products have been found to have at least the following technical problems in actual use;

[0010] Currently, most existing bag filters only have one filter bag to intercept insoluble substances and particulate matter. However, after the filter bag has been used for a long time, it needs to be replaced. The used filter bag needs to be removed and replaced with an unused filter bag, which is a cumbersome process and makes the existing devices difficult to use. Utility Model Content

[0011] To address the shortcomings of existing technologies, this invention provides a diphenylamine reaction product separation device, which solves the problem of the filter bag being difficult to replace in existing devices.

[0012] To achieve the above objectives, this utility model provides the following technical solution:

[0013] A diphenylamine reaction product separation device includes a filter chamber, a feed pipe fixedly connected to the surface of the filter chamber, a cover plate connected to the top flange of the filter chamber, a discharge pipe fixedly connected to the bottom of the filter chamber, a support ring fixedly connected to the inner wall of the filter chamber, and a separation mechanism for separating particulate matter connected to the support ring. The separation mechanism is located inside the filter chamber and includes a connecting ring with six through holes on its surface. A third filter bag is fixedly connected to the inner ring of the connecting ring, a second filter bag is disposed inside the third filter bag, and a first filter bag is disposed inside the second filter bag.

[0014] Preferably, the surface of the support ring has six threaded grooves.

[0015] Preferably, the six through holes of the connecting ring are aligned with the six threaded grooves, and each of the six through holes is fitted with a hexagonal bolt, which is threaded into the six threaded grooves.

[0016] Preferably, a ring of silicone adhesive is applied to the top of the outer wall of the second filter bag, and the second filter bag is bonded to the inner wall of the third filter bag by the silicone adhesive.

[0017] Preferably, a ring of silicone adhesive is applied to the top of the outer wall of the first filter bag, and the first filter bag is bonded to the inner wall of the second filter bag by the silicone adhesive.

[0018] Preferably, the top of the inner wall of the second filter bag and the first filter bag are both fixedly connected with fastening blocks.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. After prolonged use, a significant amount of impurities will accumulate in the first filter bag. At this point, the cover plate can be removed, and the first filter bag can be separated from the second filter bag by fastening the locking block that secures the first filter bag. The first filter bag and impurities can then be removed from the filter chamber. The third filter bag and the second filter bag can remain inside the filter chamber to filter the impurities. The cover plate can then be reinstalled. When a certain amount of impurities remain in the second filter bag, the above process can be repeated to remove the second filter bag from the filter chamber. Only the third filter bag can be used to intercept and separate the impurities. When a sufficient amount of impurities remain in the third filter bag, the cover plate can be removed. Then, all hexagonal bolts can be disassembled, and the entire separation mechanism can be removed from the filter chamber and replaced with a new separation mechanism. This process reduces the time and operations required for installing the separation mechanism twice. Compared to existing methods of replacing filter bags, this application can save time and reduce operational procedures to a certain extent, making it easy to use and solving the problem of existing devices being difficult to use.

[0021] Second, this application, by setting up a third filter bag, a second filter bag and a first filter bag, has a three-layer filtration system, which not only has a better interception and separation effect, but also prevents filtration failure after a single filter bag breaks when the first filter bag and the second filter bag are not removed. For example, if the first filter bag breaks accidentally, the second filter bag and the third filter bag can continue to filter. If the second filter bag breaks, the second filter bag can perform filtration separation, which makes this application have high stability. Attached Figure Description

[0022] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a structural diagram of the cover plate in the separated state of this utility model;

[0025] Figure 3 This is a structural diagram showing the separation mechanism and filter chamber of this utility model in their separated state.

[0026] Figure 4 This is a half-sectional view of the separation mechanism of this utility model.

[0027] Legend: 1. Filter chamber; 2. Cover plate; 3. Support ring; 4. Separation mechanism; 5. Hex bolt; 101. Feed pipe; 102. Discharge pipe; 401. Connecting ring; 402. Through hole; 403. Third filter bag; 404. Second filter bag; 405. First filter bag; 406. Fastening block. Detailed Implementation

[0028] This application provides a diphenylamine reaction product separation device, which effectively solves the problem that existing devices are not easy to use.

[0029] Example

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the technical problem that existing devices are not easy to replace filter bags. The overall idea is as follows:

[0031] To address the problems existing in the prior art, this utility model provides a diphenylamine reaction product separation device, including a filter chamber 1. A feed pipe 101 is fixedly connected to the surface of the filter chamber 1. A cover plate 2 is connected to the top flange of the filter chamber 1. A discharge pipe 102 is fixedly connected to the bottom of the filter chamber 1. A support ring 3 is fixedly connected to the inner wall of the filter chamber 1. A separation mechanism 4 for separating particulate matter is connected to the support ring 3. The separation mechanism 4 is located inside the filter chamber 1. The separation mechanism 4 includes a connecting ring 401. Six through holes 402 are opened on the surface of the connecting ring 401. A third filter bag 403 is fixedly connected to the inner ring of the connecting ring 401. A second filter bag 404 is arranged inside the third filter bag 403. A first filter bag 405 is arranged inside the second filter bag 404.

[0032] The surface of the support ring 3 has six threaded grooves.

[0033] The six through holes 402 of the connecting ring 401 are respectively aligned with the six threaded grooves. Each of the six through holes 402 is fitted with a hexagonal bolt 5, and the six hexagonal bolts 5 are respectively threaded to the six threaded grooves.

[0034] A ring of silicone adhesive is applied to the top of the outer wall of the second filter bag 404, and the second filter bag 404 is bonded to the inner wall of the third filter bag 403 by the silicone adhesive.

[0035] A ring of silicone adhesive is applied to the top of the outer wall of the first filter bag 405, and the first filter bag 405 is bonded to the inner wall of the second filter bag 404 by the silicone adhesive.

[0036] Both the top of the inner walls of the second filter bag 404 and the first filter bag 405 are fixedly connected to a fastening block 406.

[0037] Filter chamber 1: As the main structure of the entire filtration device, it provides space for the filtration of liquid diphenylamine mixture and accommodates the separation mechanism 4 for filtration operation.

[0038] Cover plate 2: It is connected to the top surface of filter chamber 1 via a flange, which serves to seal filter chamber 1 and prevent leakage of liquid diphenylamine mixture. It can also be removed when the filter bag needs to be replaced.

[0039] Support ring 3: Fixed to the inner wall of filter chamber 1, providing support for separation mechanism 4 and ensuring that separation mechanism 4 is stably installed inside filter chamber 1.

[0040] Separation mechanism 4: core filtration component, consisting of connecting ring 401, third filter bag 403, second filter bag 404 and first filter bag 405, used to separate insoluble substances and particulate matter in liquid diphenylamine mixture.

[0041] Hex bolt 5: Passes through the through hole 402 of the connecting ring 401 and is threaded into the threaded groove of the support ring 3 to fix the separation mechanism 4 on the support ring 3.

[0042] Feed pipe 101: Fixed on the surface of filter chamber 1, used to add liquid diphenylamine mixture to the inside of filter chamber 1.

[0043] Discharge pipe 102: Fixed at the bottom of filter chamber 1, the liquid diphenylamine after being filtered by separation mechanism 4 is discharged through discharge pipe 102.

[0044] Connecting ring 401: Part of the separation mechanism 4, with through holes 402 on its surface for engaging with hexagonal bolts 5 to fix the separation mechanism 4 onto the support ring 3, while its inner ring fixes the third filter bag 403.

[0045] Through hole 402: It is formed on the surface of the connecting ring 401 and is a channel through which the hexagonal bolt 5 passes, used to achieve a fixed connection between the connecting ring 401 and the support ring 3.

[0046] The third filter bag 403 is a layer of filter structure in the separation mechanism 4, which is fixedly connected to the inner ring of the connecting ring 401 to further intercept impurities filtered by the second filter bag 404.

[0047] The second filter bag 404 is located inside the third filter bag 403 and is bonded to the inner wall of the third filter bag 403 by silicone adhesive, performing secondary filtration after the first filter bag 405.

[0048] First filter bag 405: Located on the innermost side, it first filters the liquid diphenylamine mixture, intercepting most of the insoluble substances and particulate matter.

[0049] Fastening block 406: Fixed to the top of the inner wall of the second filter bag 404 and the first filter bag 405, so as to facilitate the removal of the first filter bag 405 or the second filter bag 404 from the filter chamber 1 when changing the filter bag.

[0050] Working principle:

[0051] In the first step, this application adds a liquid diphenylamine mixture to the inside of the filter chamber 1 through the feed pipe 101. During this process, the liquid diphenylamine mixture is filtered by the separation mechanism 4. First, the first filter bag 405 intercepts insoluble substances and particulate matter in the mixture, leaving the impurities behind. After passing through the first filter bag 405, the liquid diphenylamine passes through the second filter bag 404 and the third filter bag 403 and is finally discharged through the discharge pipe 102, thus achieving separation and filtration.

[0052] The second step involves removing the cover plate 2 after prolonged use. Using the latching block 406 that secures the first filter bag 405, separate the first filter bag 405 from the second filter bag 404. Remove the first filter bag 405 along with the impurities from the filter chamber 1. Leave the third filter bag 403 and the second filter bag 404 inside the filter chamber 1 to filter the impurities. Then, reinstall the cover plate 2. Repeat the above process when some impurities remain in the second filter bag 404. The second filter bag 404 is removed from the filter chamber 1, and impurities are intercepted and separated only by the third filter bag 403. When there are enough impurities in the third filter bag 403, the cover plate 2 is removed, and then each hexagonal bolt 5 is disassembled to remove the separation mechanism 4 from the filter chamber 1 as a whole and replace it with a new separation mechanism 4. In this process, the time and operation of installing the separation mechanism 4 twice can be reduced. Compared with the existing method of replacing filter bags, this application can save time to a certain extent, reduce the operation process, and make this application easy to use.

[0053] Thirdly, this application, by setting a third filter bag 403, a second filter bag 404, and a first filter bag 405, has a three-layer filtration system. This not only has a good interception and separation effect, but also prevents filtration failure after a single filter bag breaks when the first filter bag 405 and the second filter bag 404 are not removed. For example, if the first filter bag 405 breaks accidentally, the second filter bag 404 and the third filter bag 403 can continue to filter. If the second filter bag 404 breaks, the second filter bag 404 can perform filtration separation, giving this application high stability.

[0054] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A diphenylamine reaction product separation device, comprising a filter chamber (1), wherein a feed pipe (101) is fixedly connected to the surface of the filter chamber (1), a cover plate (2) is connected to the top flange of the filter chamber (1), and a discharge pipe (102) is fixedly connected to the bottom of the filter chamber (1), characterized in that, The inner wall of the filter chamber (1) is fixedly connected to a support ring (3), and the support ring (3) is connected to a separation mechanism (4) for separating particulate matter. The separation mechanism (4) is located inside the filter chamber (1). The separation mechanism (4) includes a connecting ring (401), the surface of which is provided with six through holes (402), a third filter bag (403) is fixedly connected to the inner ring of the connecting ring (401), a second filter bag (404) is provided inside the third filter bag (403), and a first filter bag (405) is provided inside the second filter bag (404).

2. The diphenylamine reaction product separation device as described in claim 1, characterized in that: The surface of the support ring (3) has six threaded grooves.

3. The diphenylamine reaction product separation device as described in claim 2, characterized in that: The six through holes (402) of the connecting ring (401) are respectively aligned with the six threaded grooves. Each of the six through holes (402) is fitted with a hexagonal bolt (5), and the six hexagonal bolts (5) are respectively threaded to the six threaded grooves.

4. The diphenylamine reaction product separation device as described in claim 3, characterized in that: The top of the outer wall of the second filter bag (404) is coated with a ring of silicone adhesive, and the second filter bag (404) is bonded to the inner wall of the third filter bag (403) by the silicone adhesive.

5. The diphenylamine reaction product separation device as described in claim 4, characterized in that: The top of the outer wall of the first filter bag (405) is coated with a ring of silicone adhesive, and the first filter bag (405) is bonded to the inner wall of the second filter bag (404) by the silicone adhesive.

6. The diphenylamine reaction product separation device as described in claim 5, characterized in that: The top of the inner wall of the second filter bag (404) and the first filter bag (405) are both fixedly connected with a fastening block (406).

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