Continuous production device of epoxy resin refining unit

Abstract

The utility model relates to a continuous production device of an epoxy resin refining unit, which sequentially comprises a refining kettle and a crystallization kettle, the output end of the crystallization kettle is connected with a salt leaching tank and a phase splitter group, and cleaning water used by the phase splitter group is recycled in the phase splitter group and between the phase splitter group and the salt leaching tank. According to the utility model, the processes of alkalifying and refining, salt dissolving, washing, settling separation and the like at the final stage of production are completed in other containers by utilizing the existing refining kettle, so that the kettle occupying time is shortened; meanwhile, water used in the separation process of other steps can be recycled, so that continuous production of the refining unit is realized, the kettle occupying time of the refining kettle is greatly shortened, the production capacity is improved, the product quality is ensured, and the energy consumption of the device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor raw material refining equipment, in particular to a continuous production device for epoxy resin refining units. Background Art

[0002] Currently, the production of epoxy resins adopts an intermittent production process, which can be divided into multiple production units according to the process, including reaction, refining, desolvation, etc.; the refining unit generally includes multiple steps such as alkali refining, salt dissolution, water washing, and separation.

[0003] In existing production processes, the entire refining process takes approximately 6 to 8 hours. Even if it is divided into two reactors, each reactor still requires 3 to 4 hours, which seriously affects production capacity. To increase production capacity, it is often necessary to reduce the number of water washes and shorten the sedimentation time to increase output. However, this raises two problems:

[0004] Insufficient water washing times result in incomplete washing, and some impurities are carried into the finished product, affecting product quality;

[0005] The sedimentation time is not enough, and the concentrated brine, aged resin, and clear liquid are not separated clearly, resulting in entrainment. In order to ensure product quality, part of the clear liquid is usually entrained into the aged resin and concentrated brine, which reduces the product yield and increases the cost of solid waste treatment and energy consumption. Utility Model Content

[0006] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a rationally structured continuous production device for epoxy resin refining units. By modifying the refining units, continuous production of the refining units is achieved after the alkali refining is completed in the refining units.

[0007] The technical solutions adopted in this utility model are as follows:

[0008] A continuous production device for epoxy resin refining unit comprises a refining kettle and a crystallization kettle in sequence. The output end of the crystallization kettle is connected to a salt washing tank and a phase separator group. The cleaning water used by the phase separator group is circulated inside the phase separator group and between the phase separator group and the salt washing tank.

[0009] As a further improvement of the above technical solution:

[0010] The output end of the salt washing tank is connected to a discharge pump, which pumps the supernatant into the phase separator group; the output end of the salt washing tank is also connected to a centrifuge, which sends the bottom material into the salt washing tank.

[0011] The output water of the salt washing tank is circulated back to the crystallization kettle, and the generated solid is discharged from the other output end.

[0012] The phase splitter group includes phase splitter 1, phase splitter 2, mixer 1, phase splitter 3, mixer 2, and phase splitter 4.

[0013] The mixer 1, the phase separator 3, the mixer 2 and the phase separator 4 form a circulating water unit.

[0014] The supernatant of the phase separator 1 flows into the phase separator 2, and the solid at the bottom is output separately.

[0015] The supernatant of the second phase separator flows into the first mixer, and the solid at the bottom is output separately.

[0016] The supernatant of phase separator three flows into phase separator four, and the bottom mixture of phase separator three is connected to the salt washing tank.

[0017] The bottom recycled water of the phase separator 4 is connected to the input port of the mixer 1, and the supernatant of the phase separator 4 is output separately.

[0018] Mixer 2 is provided with a water inlet for easy replenishment of external pure water.

[0019] The beneficial effects of the utility model are as follows:

[0020] The utility model utilizes the existing refining kettle to complete the alkali refining in the final stage of production, and the processes of salt dissolution, water washing, sedimentation, separation, etc. are realized in other containers, thus reducing the time the kettle is occupied; at the same time, the water used in the separation process of other steps can be recycled, and each step has a separate solid or mixture output.

[0021] When using the device of this solution, saturated brine is added during the first water wash to crystallize and precipitate part of the industrial salt produced during the reaction process in advance;

[0022] Then, two phase separators are used to automatically separate the concentrated brine, aged resin, and clear liquid, eliminating the need to consider the entrainment caused by manual separation, thereby improving the quality of the separated semi-finished products.

[0023] When using this equipment, multiple water washings can be performed according to product needs, and a phase separator can be used to automatically separate water and clear liquid to reduce the impurity content of the product; thereby achieving continuous production of the refining unit, significantly shortening the occupancy time of the refining kettle, and increasing production capacity. At the same time, product quality is guaranteed and energy consumption of the device is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic block diagram of the overall equipment of the present utility model.

[0025] Among them: 1. Refining kettle; 2. Crystallization kettle; 3. Centrifuge 1; 4. Salt washing tank; 5. Centrifuge 2; 6. Discharge pump; 7. Phase separator 1; 8. Phase separator 2; 9. Mixer 1; 10. Phase separator 3; 11. Recycle water pump 1; 12. Mixer 2; 13. Phase separator 4; 14. Recycle water pump 2. DETAILED DESCRIPTION

[0026] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0027] like Figure 1 As shown, the continuous production device of the epoxy resin refining unit of this embodiment includes a refining kettle 1 and a crystallization kettle 2 in sequence. The output end of the crystallization kettle 2 is connected to a salt washing tank 4 and a phase separator group. The cleaning water used by the phase separator group is circulated inside the phase separator group and between the phase separator group and the salt washing tank 4.

[0028] The output end of the salt washing tank 4 is connected to a discharge pump 6, which pumps the supernatant into the phase separator group; the output end of the salt washing tank 4 is also connected to a centrifuge, which sends the bottom material into the salt washing tank 4.

[0029] The output water of the salt washing tank 4 is circulated and transported back to the crystallization kettle 2, and the generated solid is output from the other output end.

[0030] The phase splitter group includes phase splitter 1 7, phase splitter 2 8, mixer 1 9, phase splitter 3 10, mixer 2 12, phase splitter 4 13,

[0031] The mixer 1 9, the phase separator 3 10, the mixer 2 12 and the phase separator 4 13 form a circulating water unit.

[0032] The supernatant of phase separator 1 7 flows into phase separator 2 8, and the solid at the bottom is output separately.

[0033] The supernatant from the phase separator 2 8 flows into the mixer 1 9, and the solid at the bottom is output separately.

[0034] The supernatant of the phase separator three 10 flows into the phase separator four 13, and the bottom mixture of the phase separator three 10 is connected to the salt washing tank 4.

[0035] The bottom recycled water of the phase separator 4 13 is connected to the input port of the mixer 9, and the supernatant of the phase separator 4 13 is output separately.

[0036] The mixer 2 12 is provided with a water inlet for supplying pure water from the outside.

[0037] The specific structure and working principle of the utility model are as follows:

[0038] Combined with reference Figure 1 , all the epoxy resins that have completed the previous process enter the refining kettle 1, add toluene to dilute and wash, and then add alkali as needed to complete the refining process. This process takes about 2 to 2.5 hours in the kettle;

[0039] After the refining is completed, all the epoxy resin enters the crystallization kettle 2, where saturated brine is added to wash the dissolved salt and the salt is appropriately heated to allow the salt to crystallize and precipitate. The crystallization kettle 2 can also serve as a buffer tank to ensure continuous production of feed.

[0040] The solid salt is centrifuged in centrifuge 3 and then enters the salt washing tank 4. The impurities carried by the salt are washed away with the recycled water generated in the subsequent process. The recycled water is then sent to the salt washing tank 4 as saturated brine for recycling. The solid salt is separated again by centrifuge 2 5 and then output as a by-product of industrial salt.

[0041] The epoxy resin mixture in the crystallization kettle 2 is pumped into the phase separator 7 through the discharge pump 6. The bottom of the phase separator 7 separates the concentrated brine and outputs it. The upper mixture is sent to the phase separator 8;

[0042] The aged resin is separated and outputted from the bottom of the second phase separator 8, and the upper portion is the epoxy resin clear liquid containing toluene. The clear liquid is mixed with the recycled water of the subsequent process through the mixer 9 and sent to the third phase separator 10;

[0043] The recycled water separated at the bottom of the phase separator 3 10 is pressurized by the recycled water pump 11 and sent to the salt washing tank 4. After washing and saturation, it is sent to the crystallization kettle 2 for recycling; the upper clear liquid is mixed with fresh pure water added from the outside and sent to the phase separator 4 13;

[0044] The recycled water separated at the bottom of the phase separator 4 13 is pressurized by a pump and sent to the mixer 1 9 of the phase separator 3 10 for recycling; the clean clear liquid separated at the top of the phase separator 4 13 is sent to the next production unit for filtration and distillation.

[0045] In this utility model, Figure 1 For example, four phase separators are provided for processing. You can also add more phase separators according to product needs to achieve multiple washing. The separated water is sent to the previous process for recycling. The last phase separator is washed with fresh pure water added from the outside to ensure product quality. The volume of the phase separator is set according to the processing volume of continuous production to ensure that the sedimentation time is 0.5 to 1 hour.

[0046] The device of the utility model can realize the continuous production of the epoxy resin refining unit, and at the same time greatly shorten the occupation time of the refining kettle 1, thereby improving production capacity, ensuring product quality and reducing energy consumption of the device.

[0047] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the scope of protection of the utility model.

Claims

1. A continuous production device for epoxy resin refining unit, characterized by: The invention comprises a refining kettle (1) and a crystallization kettle (2) in sequence. The output end of the crystallization kettle (2) is connected to a salt washing tank (4) and a phase separator group. The washing water used by the phase separator group is circulated inside the phase separator group and between the phase separator group and the salt washing tank (4). The output end of the salt washing tank (4) To the crystallization kettle (2), the output end of the crystallization kettle (2) is connected There is a discharge pump (6), centrifuge One (3) , the discharge pump (6) pumps the supernatant into the phase separator group; Centrifuge 1 (3) Send the bottom material into the salt washing tank (4); The output water of the salt washing tank (4) is circulated back to the crystallization kettle (2), and the generated solid is output from the other output end.

2. The continuous production device for epoxy resin refining unit according to claim 1, characterized in that: The phase splitter group includes phase splitter 1 (7), phase splitter 2 (8), mixer 1 (9), phase splitter 3 (10), mixer 2 (12), and phase splitter 4 (13). The mixer 1 (9), the phase separator 3 (10), the mixer 2 (12) and the phase separator 4 (13) form a circulating water unit.

3. The continuous production device for epoxy resin refining unit according to claim 2, characterized in that: The supernatant of the phase separator 1 (7) flows into the phase separator 2 (8), and the solid at the bottom is output separately.

4. The continuous production device for epoxy resin refining unit according to claim 2, characterized in that: The supernatant of the second phase separator (8) flows into the first mixer (9), and the solid at the bottom is output separately.

5. The continuous production device for epoxy resin refining unit according to claim 2, characterized in that: The supernatant of phase separator three (10) flows into phase separator four (13), and the bottom mixture of phase separator three (10) is connected to the salt washing tank (4).

6. The continuous production device for epoxy resin refining unit according to claim 2, characterized in that: The bottom recycled water of the phase separator four (13) is connected to the input port of the mixer one (9), and the supernatant of the phase separator four (13) is output separately.

7. The continuous production device for epoxy resin refining unit according to claim 2, characterized in that: Mixer 2 (12) is provided with a water inlet for easy replenishment of external pure water.

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