Sewage treatment equipment for tert-butyl peroxybenzoate production

Abstract

The utility model discloses sewage treatment equipment for tert-butyl peroxybenzoate production. The sewage treatment equipment comprises an evaporation tank; the jacket is arranged on the outer side of the evaporation tank, and a steam heating space is formed between the jacket and the evaporation tank; the sealing head is arranged at the top end of the evaporation tank; the stirring driver is arranged on the sealing head; the stirring drive is connected with the stirring shaft, and the stirring shaft is rotatably arranged on the sealing head; the scraping plate is arranged on the stirring shaft. High-temperature steam is discharged into the steam heating space and rapidly heats the evaporation tank, so that the sewage in the evaporation tank is heated and boiled, water in the sewage is converted into steam, and sodium chloride in the sewage is crystallized and separated out. In the treatment process, the stirring shaft is driven by the stirring drive to rotate, sewage is continuously stirred, bumping of the sewage is avoided, high-quality crystal salt can be formed easily, and meanwhile, the inner wall of the evaporation tank is scraped by the scraping plates differently, so that salt is prevented from being hung on the inner wall of the evaporation tank.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to a wastewater treatment device for the production of tert-butyl peroxide. Background Technology

[0002] tert-butyl peroxide is an organic compound, a colorless to slightly yellow liquid with a slightly aromatic odor. It is insoluble in water but soluble in organic solvents. Tert-butyl peroxide is widely used as an initiator in the polymerization of materials such as ethylene, styrene, propylene, vinyl acetate, diallyl phthalate, and isobutylene.

[0003] The production of tert-butyl peroxide generates wastewater containing sodium chloride. In the wastewater treatment process, salt is usually extracted from the wastewater by evaporation and concentration before the treated wastewater is discharged. In the existing technology, the salt obtained by evaporation and concentration tends to stick to the inner wall of the evaporation tank, which makes it difficult for the salt to be effectively discharged and affects the efficiency of wastewater treatment.

[0004] Therefore, it is necessary to propose a wastewater treatment device for the production of tert-butyl peroxide to prevent salt from adhering to the inner wall of the evaporator, which has become an important technical problem that urgently needs to be solved. Utility Model Content

[0005] This application provides a wastewater treatment device for the production of tert-butyl peroxide, which aims to solve the problem in the prior art that the salt obtained by evaporation and concentration is easily stuck on the inner wall of the evaporation tank, resulting in the inability to effectively discharge the salt and affecting the efficiency of wastewater treatment.

[0006] To achieve the above objectives, this application proposes a wastewater treatment device for the production of tert-butyl benzoate, comprising: an evaporator; a jacket disposed on the outside of the evaporator, forming a steam heating space between the jacket and the evaporator; an end cap disposed on the top of the evaporator; a stirring drive disposed on the end cap; a stirring shaft connected to the stirring drive, rotatably disposed on the end cap; and a scraper disposed on the stirring shaft.

[0007] In some embodiments, the device further includes: a feed pipe disposed on the end cap; and a steam outlet disposed on the end cap.

[0008] In some embodiments, it further includes: a ring pipe, wherein multiple feed pipes are provided and the multiple feed pipes are connected to the ring pipe; and a spray nozzle, wherein a plurality of ring pipes are provided on the outer side of the ring pipe.

[0009] In some embodiments, the system further includes: a steam inlet disposed in the jacket and connected to the steam heating space; and a steam trap outlet disposed in the jacket and connected to the steam heating space.

[0010] In some embodiments, the device further includes a temperature measuring hole disposed in the evaporator.

[0011] In some embodiments, it further includes a pressure relief port, which is disposed in the jacket and communicates with the steam heating space.

[0012] This application proposes a wastewater treatment device for the production of tert-butyl peroxide, comprising: an evaporator; a jacket disposed on the outside of the evaporator, forming a steam heating space between the jacket and the evaporator; an end cap disposed on the top of the evaporator; a stirring drive disposed on the end cap; a stirring shaft connected to the stirring drive, rotatably disposed on the end cap; and a scraper disposed on the stirring shaft. Wastewater is discharged into the evaporator, and high-temperature steam is discharged into the steam heating space. The high-temperature steam rapidly heats the evaporator, causing the wastewater inside to boil. The water in the wastewater is converted into water vapor, while the sodium chloride in the wastewater crystallizes and precipitates out. This achieves the purpose of removing salt from the wastewater. During the treatment process, the stirring drive drives the stirring shaft to rotate, continuously stirring the wastewater to prevent violent boiling and to facilitate the formation of high-quality crystalline salt. Simultaneously, the scraper scrapes the inner wall of the evaporator to prevent salt from adhering to the inner wall. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0014] Figure 1 This is a schematic diagram of a wastewater treatment device for the production of tert-butyl peroxide in one embodiment of this application;

[0015] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0016] In the diagram: 1. Evaporator; 2. Connector; 3. First connecting end; 4. Second connecting end; 5. Stirring shaft; 6. Stirring drive; 7. Steam outlet; 8. Feed pipe; 9. End cap; 10. Steam inlet; 11. Mounting base; 12. Temperature measuring hole; 13. Jacket; 14. Discharge port; 15. Steam trap port; 16. Scraper; 17. Ring pipe; 18. Spray nozzle. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0018] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0019] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0020] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0021] See Figure 1 As shown, this application proposes a wastewater treatment device for the production of tert-butyl benzoate, comprising: an evaporator 1; a jacket 13, which is disposed on the outside of the evaporator 1, forming a steam heating space between the jacket 13 and the evaporator 1; a head 9, which is disposed at the top of the evaporator 1; a stirring drive 6, which is disposed on the head 9; a stirring shaft 5, which is connected to the stirring drive 6 and is rotatably disposed on the head 9; and a scraper 16, which is disposed on the stirring shaft 5.

[0022] The evaporator 1 is an open-top tank. A first connecting end 3 is located at the top of the evaporator 1, and a second connecting end 4 is located at the bottom of the end cap 9. Both the first connecting end 3 and the second connecting end 4 have corresponding connecting holes. The first connecting end 3 and the second connecting end 4 are connected together by bolts, lock nuts, and the connecting holes to form a complete tank. A sealing element is provided between the first connecting end 3 and the second connecting end 4.

[0023] The jacket 13 is welded to the outside of the evaporator 1. The jacket 13 and the evaporator 1 enclose a steam heating space. High-temperature steam is discharged into the steam heating space and exchanges heat with the evaporator 1, thereby raising the temperature of the evaporator 1 and causing the salt-containing wastewater in the evaporator 1 to evaporate and concentrate, forming crystalline salt.

[0024] The stirring drive 6 is a motor mounted on the end cap 9. The output end of the stirring drive 6 is connected to the stirring shaft 5 via a coupling, thereby driving the stirring shaft 5 to rotate. The mounting structure of the stirring drive 6 and the connection method between the output end of the stirring drive 6 and the stirring shaft 5 are mature existing technologies, and their specific structures are not limited here. Multiple connecting parts 2 are arranged axially at intervals on the stirring shaft 5, and scrapers 16 are welded to the connecting parts 2. During the rotation of the stirring shaft 5, it can continuously stir the wastewater, avoid the wastewater from boiling violently, and also facilitate the formation of high-quality crystalline salt. At the same time, the scrapers 16 scrape the inner wall of the evaporator 1 to prevent salt from adhering to the inner wall of the evaporator 1.

[0025] In this embodiment, the scraper 16 is attached to the inner wall of the evaporator 1. The scraper 16 can be straight, curved, or a combination of both. No specific limitation is made here, as long as it is ensured that the scraper 16 can continuously scrape off the salt on the inner wall of the evaporator 1 during rotation.

[0026] Specifically, wastewater is discharged into evaporator 1, and high-temperature steam is discharged into the steam heating space. The high-temperature steam rapidly heats evaporator 1, causing the wastewater inside to boil. The water in the wastewater is converted into water vapor, while the sodium chloride in the wastewater crystallizes and precipitates out. This achieves the purpose of removing salt from the wastewater. During the treatment process, the stirring drive 6 drives the stirring shaft 5 to rotate, continuously stirring the wastewater to prevent it from boiling violently and to facilitate the formation of high-quality crystalline salt. At the same time, the scraper 16 scrapes the inner wall of evaporator 1 to prevent salt from adhering to the inner wall.

[0027] See Figure 1 As shown, in some embodiments, it further includes: a feed pipe 8, which is disposed at the end cap 9; wastewater is discharged into the interior of the evaporator 1 from the feed pipe 8, and a steam outlet 7, which is disposed at the end cap 9. The water vapor generated by evaporation and concentration is discharged from the steam outlet 7.

[0028] See Figure 1 and Figure 2As shown, in some embodiments, it further includes: a ring pipe 17, with multiple feed pipes 8 connected to the ring pipe 17; multiple feed pipes 8 are spaced circumferentially on the end cap 9, and the ends of the feed pipes 8 are welded to the ring pipes 17, allowing wastewater to enter the feed pipes 8 and flow into the ring pipes 17. A spray nozzle 18 is provided on the outer side of the ring pipes 17, with several ring pipes 17 formed therein. Wastewater in the ring pipes 17 is sprayed from the spray nozzle 18 onto the inner wall of the evaporator 1, allowing newly entering wastewater to quickly heat up under the high-temperature steam in the steam heating space.

[0029] In this embodiment, multiple spray nozzles 18 are provided, and the flow area of ​​the spray nozzles 18 gradually increases along the diameter direction of the ring pipe 17 to increase the spray range of sewage, so that the sewage can fully contact the inner wall of the evaporator 1 and improve the heat exchange efficiency.

[0030] See Figure 1 As shown, in some embodiments, it further includes: a steam inlet 10, which is disposed in the jacket 13 and connected to the steam heating space; high-temperature steam enters the steam heating space from the steam inlet 10; and a steam trap 15, which is disposed in the jacket 13 and connected to the steam heating space. The steam trap 15 is connected to a steam trap, and the high-temperature steam is discharged from the steam trap after condensation and liquefaction.

[0031] In this embodiment, after the sewage forms steam and is discharged from the steam outlet 7, it can enter the compressor to increase the internal energy of the steam. The steam with increased internal energy can flow into the steam heating space from the steam inlet 10 to heat the sewage. Of course, the temperature of the steam can also be increased by other means, and no specific restrictions are made here.

[0032] See Figure 1 As shown, in some embodiments, it further includes a temperature measuring hole 12, which is disposed in the evaporator 1. The temperature measuring hole 12 is used to insert a thermometer to measure the temperature inside the evaporator 1. The scraper 16 inside the evaporator 1 needs to be designed to avoid the thermometer.

[0033] See Figure 1 As shown, in some embodiments, a pressure relief port is also included, which is disposed in the jacket 13 and connected to the steam heating space. The pressure relief port is used to prevent excessive pressure in the steam heating space. Preferably, the evaporator 1 is also provided with a pressure relief port.

[0034] In this embodiment, an mounting base 11 is provided on the outside of the evaporator 1 for securely mounting the mounting base 11. The evaporator 1 is also provided with a discharge port 14 for discharging salt.

[0035] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A wastewater treatment device for the production of tert-butyl peroxide, characterized in that, include: Evaporator (1); A jacket (13) is provided on the outside of the evaporator (1), and a steam heating space is formed between the jacket (13) and the evaporator (1); End cap (9), the end cap (9) is disposed at the top of the evaporator (1); A stirring drive (6) is disposed on the end cap (9); A stirring shaft (5) is connected to the stirring drive (6), and the stirring shaft (5) is rotatably disposed on the end cap (9). Scraper (16), the scraper (16) is disposed on the stirring shaft (5).

2. The wastewater treatment equipment for the production of tert-butyl peroxide according to claim 1, characterized in that, Also includes: Feed pipe (8), the feed pipe (8) is disposed on the end cap (9); Steam outlet (7) is provided on the head (9).

3. The wastewater treatment equipment for the production of tert-butyl peroxide according to claim 2, characterized in that, Also includes: The annular pipe (17) is provided with multiple feed pipes (8), and the multiple feed pipes (8) are connected to the annular pipe (17). The spray nozzle (18) has several ring pipes (17) on its outer side.

4. The wastewater treatment equipment for the production of tert-butyl peroxide according to claim 1, characterized in that, Also includes: Steam inlet (10) is provided in the jacket (13) and communicates with the steam heating space; A steam trap (15) is provided in the jacket (13) and is connected to the steam heating space.

5. The wastewater treatment equipment for the production of tert-butyl peroxide according to claim 3, characterized in that, Also includes: Temperature measuring hole (12) is provided in the evaporator (1).

6. The wastewater treatment equipment for the production of tert-butyl peroxide according to claim 1, characterized in that, Also includes: A pressure relief port is provided in the jacket (13) and is connected to the steam heating space.

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