Continuous washing and purifying device for organic peroxides

Abstract

The utility model relates to the technical field of separation devices, and particularly discloses an organic peroxide continuous washing and purifying device which comprises a tank body, a plurality of baffles are fixedly arranged in the tank body at intervals, a plurality of through holes are formed in the baffles at intervals, a product inlet is formed in one side of the tank body, a product outlet is formed in the other side of the tank body, and a jacket is arranged outside the tank body. A first partition plate and a second partition plate are sequentially arranged on the side, close to the product outlet, in the tank body, a liquid level sensor and a waste water discharge valve are arranged at the top and the bottom between the first partition plate and the second partition plate respectively and are in linkage, and a thermometer is arranged on the top of the tank body. According to the utility model, the demulsification probability of emulsified liquid drops in materials can be increased, the separation speed of oil and water phases is accelerated, continuous operation is realized, the single-batch time period of products is shortened, the use efficiency of the reaction kettle and the single-kettle yield are improved, the production cost is reduced, the washing water consumption is reduced, and the discharge of production wastewater is reduced; and the later wastewater treatment pressure is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of separation devices, and specifically discloses a continuous washing and purification device for organic peroxides. Background Art

[0002] During the reaction process of organic peroxide production, the vigorous stirring of the agitator in the reactor will cause partial emulsification of the oil and water phases. The emulsion droplets contain more water, and the water is coated with a large amount of salt impurities. Therefore, it is necessary to break the emulsion droplets in the product by washing, so as to completely separate the product and the water phase to obtain a purified and qualified product.

[0003] In the current production process, after the reaction is completed, stirring is first stopped, and the lower mother liquor is discharged after the solution is allowed to stand for stratification, and then water is added for stirring and washing. During the washing process, salt, demulsifiers, etc. are usually added to accelerate the demulsification of the emulsified phase and improve the separation efficiency of the oil-water phase during standing. After the oil-water phase is separated, the lower aqueous phase is discharged, and then this process is repeated until the product is washed to neutral. Since the emulsified layer is easily enriched between the oil-water phase and has a certain height, and contains water and products at the same time, it cannot be completely separated in a short time, resulting in a low separation efficiency of this method. In the process of discharging the lower aqueous phase, the emulsified layer is easily carried out by the aqueous phase, so it is necessary to control the drainage speed, and it is necessary to stop the discharge when the dense area of ​​the emulsified layer is close to the drain port, and continue the next washing to ensure that the emulsified layer will not be carried out by the aqueous phase. The advantage of this method is to reduce the operation time, and the disadvantage is that the single separation efficiency decreases, and the number of product washings needs to be increased, which leads to an increase in production wastewater.

[0004] In order to ensure the product yield, the prior art usually adopts the method of multiple drainage, increasing the static stratification time, and increasing the amount of salt used for salting out and demulsification to reduce the thickness of the emulsion layer. This method will increase the single operation time, resulting in a long washing time and low production efficiency. The increase in the amount of salt and demulsifier will increase the production cost, which is not conducive to subsequent wastewater treatment. Utility Model Content

[0005] In view of the above deficiencies in the prior art, the utility model provides an organic peroxide continuous washing and purification device, which improves the washing and purification efficiency of the product in the organic peroxide preparation process, shortens the single batch product production cycle, improves the product yield, avoids the use of salt and demulsifiers, reduces the discharge of production wastewater, reduces the pressure of later wastewater treatment, and is more economical and environmentally friendly.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] The organic peroxide continuous washing and purification device comprises a tank body, a plurality of baffles are fixedly arranged at intervals in the tank body, a plurality of through holes are arranged at intervals on the baffles, a product inlet is arranged on one side of the tank body, a product outlet is arranged on the other side of the tank body, a jacket is arranged on the outside of the tank body, a partition plate 1 and a partition plate 2 are arranged in sequence on the side of the tank body close to the product outlet, a liquid level sensor and a wastewater discharge valve are respectively arranged on the top and bottom between the partition plate 1 and the partition plate 2, the liquid level sensor and the wastewater discharge valve are linked, and a thermometer is arranged on the top of the tank body.

[0008] Furthermore, the included angle between the baffle and the vertical direction is 10-15°, and a horizontal plate is fixedly provided on the top of the baffle.

[0009] Furthermore, the trough body is made of 316L stainless steel or plastic, the baffle is made of 316L stainless steel, the thickness of the baffle is 2-5mm, the porosity of the baffle is 40-70%, and the length of the horizontal plate is 20-50mm.

[0010] Furthermore, the number of through holes is 6-15, and the through holes are arranged in a polygonal shape as a whole, and the side length of the through holes is 3-20 mm.

[0011] Furthermore, a cold medium inlet is arranged at a lower portion of a side of the jacket close to the product outlet, and a cold medium outlet is arranged at an upper portion of a side of the jacket close to the product inlet.

[0012] Furthermore, a heat-insulating layer is arranged outside the jacket.

[0013] Furthermore, a water cavity is arranged between the partition plate 1 and the partition plate 2, a product cavity is arranged between the partition plate 2 and the inner wall of the tank body, and a liquid level sensor and a waste water discharge valve are arranged on the cavity wall of the water cavity.

[0014] Furthermore, a viewing mirror is fixedly arranged on the cavity wall of the water cavity, the height of the viewing mirror is higher than the height of the partition plate 1, and the height of the partition plate 2 is higher than the height of the viewing mirror.

[0015] Furthermore, the upper part of the partition plate 2 is a screen, and the lower part of the partition plate 2 and the partition plate 1 are both stainless steel plates.

[0016] Furthermore, the height of the stainless steel plate of the partition two is higher than that of the partition one, and the height of the sight glass is higher than that of the stainless steel plate of the partition two.

[0017] The beneficial effects of the utility model are:

[0018] The utility model adopts a flattened trough design, which shortens the vertical movement distance when the oil-water two-phase is separated, and improves the oil-water separation efficiency; the baffle is set to increase the demulsification probability of emulsified droplets in the material; the baffle is set to physically cut the material, increase the demulsification probability of the emulsion droplets contacting the hole wall, accelerate the separation speed of the oil-water two-phase, realize continuous operation, shorten the single batch time cycle of the product, and improve the use efficiency of the reactor and the single reactor output; the utility model does not use additives such as salt and demulsifiers, thereby reducing production costs; the utility model avoids product entrainment in the water phase discharge process, and improves the product yield; the utility model reduces the amount of washing water, reduces the discharge of production wastewater, and reduces the pressure of later wastewater treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the baffle of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the partition board 2 of the utility model.

[0022] In the figure: 1. tank body; 2. baffle; 3. through hole; 4. product inlet; 5. product outlet; 6. jacket; 7. cold medium inlet; 8. cold medium outlet; 9. partition 1; 10. partition 2; 11. insulation layer; 12. sight glass; 13. liquid level sensor; 14. wastewater discharge valve; 15. thermometer; 16. level plate. DETAILED DESCRIPTION

[0023] The utility model is described and illustrated in detail below in conjunction with the accompanying drawings.

[0024] Example 1

[0025] like Figure 1-3 As shown, the organic peroxide continuous washing and purification device comprises a tank body 1, a plurality of baffles 2 are fixedly arranged at intervals in the tank body 1, a plurality of through holes 3 are arranged at intervals on the baffles 2, a product inlet 4 is arranged on one side of the tank body 1, a product outlet 5 is arranged on the other side of the tank body 1, a jacket 6 is arranged on the outside of the tank body 1, a partition 1 9 and a partition 2 10 are arranged in sequence on one side of the tank body 1 near the product outlet 5, a liquid level sensor 13 and a wastewater discharge valve 14 are respectively arranged on the top and bottom between the partition 1 9 and the partition 2 10, the liquid level sensor 13 and the wastewater discharge valve 14 are linked, and a thermometer 15 is arranged on the top of the tank body 1.

[0026] By setting the baffle 2, the probability of demulsification of emulsion droplets in the material can be increased; by setting the through hole 3, the material can be physically cut, the probability of demulsification of emulsion droplets contacting the hole wall of the through hole 3 can be increased, and the separation speed of the oil-water two phases can be accelerated; by setting the partition 1 9 and the partition 2 10, the liquid level height can be controlled; by setting the liquid level sensor 13, the height of the oil phase can be detected, and the opening of the wastewater discharge valve 14 can be adjusted according to the height of the oil phase through the linkage between the liquid level sensor 13 and the wastewater discharge valve 14.

[0027] The angle between the baffle 2 and the vertical direction is 10-15°, and a horizontal plate 16 is fixedly arranged at the top of the baffle 2. The baffle 2 is arranged at an angle with the vertical direction, which is conducive to the floating of the oil phase and the sinking of the water phase. The horizontal plate 16 can better demulsify the oil phase product.

[0028] The material of the tank body 1 is 316L stainless steel or plastic, the material of the baffle plate 2 is 316L stainless steel, the thickness of the baffle plate 2 is 2-5mm, the porosity of the baffle plate 2 is 40-70%, and the length of the horizontal plate 16 is 20-50mm.

[0029] The number of through holes 3 is 6-15, and the through holes 3 are arranged in a polygonal shape as a whole, and the side length of the through holes 3 is 3-20 mm. The through holes 3 are in a polygonal shape as a whole, which can increase the perimeter of the through holes 3 and the outer edge of the material contact, and increase the mechanical cutting effect.

[0030] A cold medium inlet 7 is provided at a lower portion of the jacket 6 close to the product outlet 5 , and a cold medium outlet 8 is provided at an upper portion of the jacket 6 close to the product inlet 4 .

[0031] The outside of the jacket 6 is provided with a heat-insulating layer 11. The heat-insulating layer 11 can play a role in heat insulation and warmth preservation.

[0032] A water cavity is arranged between the partition plate 1 9 and the partition plate 2 10 , a product cavity is arranged between the partition plate 2 10 and the inner wall of the tank body 1 , and a liquid level sensor 13 and a waste water discharge valve 14 are arranged on the cavity wall of the water cavity.

[0033] A sight glass 12 is fixedly arranged on the cavity wall of the water cavity, and the height of the sight glass 12 is higher than the height of the partition 1 9, and the height of the partition 2 10 is higher than the height of the sight glass 12. The sight glass 12 can be arranged to observe the oil-water interface at any time.

[0034] The upper part of the partition 2 10 is a screen, and the lower part of the partition 2 10 and the partition 1 9 are both stainless steel plates. The upper part of the partition 2 10 is a screen, which enables the oil phase to pass through the partition 2 10 into the product chamber.

[0035] The height of the partition 2 10 stainless steel plate is higher than that of the partition 1 9, and the height of the sight glass 12 is higher than that of the partition 2 10 stainless steel plate. The height of the partition 2 10 stainless steel plate is higher than that of the partition 1 9 to prevent the water phase from entering the product chamber.

[0036] Working principle and process:

[0037] When in use, firstly pass the cooling medium into the jacket 6 to make the device reach a suitable temperature, and then add the material into the tank body 1 through the product inlet 4. The material moves forward in the tank body 1. When passing through the baffle 2, the baffle 2, the hole wall of the through hole 3 and the emulsified droplets in the material collide, and the emulsified droplets are physically cut to break the emulsified droplets and then separate the oil phase and the water phase therein. Under the action of gravity, due to the difference in density, the oil phase floats up and the water phase sinks. In the process of the material moving forward through several baffles 2, the emulsified droplets in the material, the water phase and the oil phase will continue to demulsify. The water phase and the oil phase in the material are basically completely separated before the partition 9. The water phase and the oil phase both enter the water cavity through the partition 9, and the oil phase at the top enters the product cavity through the screen on the upper part of the partition 10 to obtain the organic peroxide product, and is discharged from the device through the product outlet 5 to enter the subsequent process.

Claims

1. A continuous washing and purification device for organic peroxides, comprising a tank body (1), characterized in that: A plurality of baffles (2) are fixedly arranged at intervals in the tank body (1), and a plurality of through holes (3) are arranged at intervals on the baffles (2). A product inlet (4) is arranged on one side of the tank body (1), and a product outlet (5) is arranged on the other side of the tank body (1). A jacket (6) is arranged outside the tank body (1). A partition plate 1 (9) and a partition plate 2 (10) are arranged in sequence on one side of the tank body (1) near the product outlet (5). A liquid level sensor (13) and a wastewater discharge valve (14) are arranged at the top and bottom between the partition plate 1 (9) and the partition plate 2 (10), respectively. The liquid level sensor (13) and the wastewater discharge valve (14) are linked to each other, and a thermometer (15) is arranged at the top of the tank body (1).

2. The organic peroxide continuous washing and purification device according to claim 1, characterized in that: The included angle between the baffle plate (2) and the vertical direction is 10-15°, and a horizontal plate (16) is fixedly arranged on the top end of the baffle plate (2).

3. The organic peroxide continuous washing and purification device according to claim 2, characterized in that: The material of the tank body (1) is 316L stainless steel or plastic, the material of the baffle plate (2) is 316L stainless steel, the thickness of the baffle plate (2) is 2-5 mm, the porosity of the baffle plate (2) is 40-70%, and the length of the horizontal plate (16) is 20-50 mm.

4. The organic peroxide continuous washing and purification device according to claim 1, characterized in that: The number of the through holes (3) is 6-15, and the through holes (3) are arranged in a polygonal shape as a whole, and the side length of the through holes (3) is 3-20 mm.

5. The organic peroxide continuous washing and purification device according to claim 1, characterized in that: A cold medium inlet (7) is provided at the lower part of one side of the jacket (6) close to the product outlet (5), and a cold medium outlet (8) is provided at the upper part of one side of the jacket (6) close to the product inlet (4).

6. The organic peroxide continuous washing and purification device according to claim 1, characterized in that: A heat-insulating layer (11) is provided outside the jacket (6).

7. The organic peroxide continuous washing and purification device according to claim 1, characterized in that: A water cavity is provided between the partition plate 1 (9) and the partition plate 2 (10), a product cavity is provided between the partition plate 2 (10) and the inner wall of the tank body (1), and a liquid level sensor (13) and a wastewater discharge valve (14) are provided on the cavity wall of the water cavity.

8. The organic peroxide continuous washing and purification device according to claim 7, characterized in that: A sight glass (12) is fixedly arranged on the wall of the water chamber, the height of the sight glass (12) being higher than the height of the partition plate 1 (9), and the height of the partition plate 2 (10) being higher than the height of the sight glass (12).

9. The organic peroxide continuous washing and purification device according to claim 8, characterized in that: The upper part of the partition plate 2 (10) is a screen, and the lower part of the partition plate 2 (10) and the partition plate 1 (9) are both stainless steel plates.

10. The organic peroxide continuous washing and purification device according to claim 9, characterized in that: The height of the stainless steel plate of the second partition (10) is higher than the height of the first partition (9), and the height of the sight glass (12) is higher than the height of the stainless steel plate of the second partition (10).

Images