Drying system for dicumyl peroxide

Abstract

The utility model relates to a drying system, in particular to a drying system of dicumyl peroxide. Comprising a feed liquid kettle, a discharge port of the feed liquid kettle is sequentially connected with a condenser, a crystallizer, a first centrifugal machine, a first vibrating screen, a second centrifugal machine and a second vibrating screen, the second vibrating screen is connected with a feed port of a fluidized bed dryer, a discharge port of the fluidized bed dryer is connected with a product tank, and the first vibrating screen and the second vibrating screen are connected with a feed port of the feed liquid kettle. The first centrifugal machine and the second centrifugal machine are connected with a solvent intermediate storage tank, the solvent intermediate storage tank is connected with a liquid inlet of the feed liquid kettle, the fluidized bed dryer is connected with a hot air recycling system, and the hot air recycling system is connected with a powder recycling system. According to the utility model, through two-stage centrifugation and two-stage screening, a solvent is separated from solids as well as powder and crystals as much as possible, so that the energy consumption of a subsequent drying process is reduced, the efficiency is improved, meanwhile, the loss of the solvent in the drying process is reduced, and the solvent is recycled as much as possible.

Description

Technical Field

[0001] The utility model relates to a drying system, in particular to a drying system for cumene peroxide. Background Art

[0002] As an important chemical raw material, cumene peroxide plays a vital role in chemical production. Drying is a critical step in its production process to ensure product quality and production efficiency. However, traditional cumene peroxide drying systems, particularly those using fluidized bed dryers, face a series of technical challenges that require urgent resolution.

[0003] First, during operation, the fluidized bed dryer uses hot air to dry cumene peroxide. However, during this process, some of the incompletely crystallized cumene peroxide is blown away with the hot air, which not only leads to significant waste of raw materials but also increases production costs. Secondly, the efficiency of hot air utilization in the drying process also needs to be improved. In traditional drying systems, hot air is often discharged directly into the atmosphere after completing the drying task, and effective recycling cannot be achieved. This not only results in a huge waste of energy, but also increases the environmental burden, which is contrary to the current green and low-carbon production concept advocated.

[0004] Furthermore, the centrifuged slurry often contains a certain amount of uncrystallized cumene peroxide powder. This powder not only affects the efficiency of the drying process but also increases the difficulty of subsequent processing. To remove this powder, the traditional method involves sieving the slurry after drying. However, this step not only increases production costs but also may cause the dried powder to be re-introduced into the solvent and recrystallize. This repetitive process not only wastes resources but also reduces overall production efficiency.

[0005] In summary, traditional cumene peroxide drying systems suffer from multiple issues, including waste of raw materials, high energy consumption, low process efficiency, and environmental pollution. Therefore, developing a highly efficient, energy-saving, and environmentally friendly cumene peroxide drying system is crucial for improving product quality, reducing production costs, and achieving sustainable development. Utility Model Content

[0006] The utility model provides a cumene peroxide drying system to solve the problems of raw material waste, large energy loss, low process efficiency and environmental pollution in the cumene peroxide drying system.

[0007] The drying system of isopropyl benzene peroxide described in the utility model comprises a liquid kettle, the discharge port of the liquid kettle is sequentially connected to a condenser, a crystallizer, a first centrifuge, a first vibrating screen, a second centrifuge, and a second vibrating screen, the second vibrating screen is connected to the feed port of a fluidized bed dryer, the discharge port of the fluidized bed dryer is connected to a product tank, the first vibrating screen and the second vibrating screen are respectively connected to the feed port of the liquid kettle via a first conveyor belt and a second conveyor belt, the first centrifuge and the second centrifuge are connected to a solvent intermediate storage tank via a pipeline, the solvent intermediate storage tank is connected to the liquid inlet of the liquid kettle via a solvent recycling transport pipe, the fluidized bed dryer is connected to a hot air recycling system, and the hot air recycling system is connected to a powder recovery system.

[0008] Through secondary centrifugation, the solvent and solid are separated as much as possible, which reduces the energy consumption of the subsequent drying process, improves the efficiency, and reduces the loss of solvent in the drying process, so that the solvent can be recycled as much as possible.

[0009] Through secondary screening, the uncrystallized powder is separated from the crystallized powder, and the powder is transported back to the liquid kettle through a conveyor belt to be re-dissolved and then recrystallized, which reduces the loss of raw materials, reduces the energy consumption of the drying process, and improves the efficiency of the drying process.

[0010] Furthermore, the hot air recycling system includes a first cyclone separator and a second cyclone separator connected to the outlet of the fluidized bed dryer, the first cyclone separator and the second cyclone separator are connected in series, and the second cyclone separator is connected to the inlet of the fluidized bed dryer through a pipeline.

[0011] Furthermore, the first cyclone separator and the second cyclone separator are connected to a powder intermediate storage tank, a nitrogen pipeline is provided on the powder intermediate storage tank, and the powder intermediate storage tank is connected to the powder storage tank through a powder return pipeline.

[0012] Furthermore, the powder storage tank is provided with an exhaust port, a filter screen is installed at the bottom of the exhaust port, the powder storage tank is located above the liquid kettle, and is connected to the feed port of the liquid kettle through a pipeline, and a valve is provided on the pipeline.

[0013] The cumene peroxide powder in the circulating hot air is removed by a secondary cyclone separator and collected in an intermediate powder storage tank. Nitrogen is then used to transport the powder to the powder storage tank. The gas is then discharged from the exhaust port through a filter screen to filter the powder. When enough powder has been collected in the powder storage tank, it is added to the liquid kettle as raw material for heat melting.

[0014] Furthermore, a heater is provided on the pipeline between the second cyclone separator and the inlet of the fluidized bed dryer.

[0015] Furthermore, an induced draft fan is provided on the pipeline between the first cyclone separator and the outlet of the fluidized bed dryer.

[0016] Furthermore, the liquid kettle is provided with a solvent pipeline and a cumene peroxide raw material pipeline.

[0017] Furthermore, a solvent pump is provided on the solvent recycling transport pipe.

[0018] Working Principle: Ethanol and cumene peroxide are added to the feed kettle via the solvent pipeline and the cumene peroxide raw material pipeline, heated and mixed. After cooling in the condenser, the mixture crystallizes and settles in the crystallizer. After centrifugation in the first centrifuge, the filtrate is stored in the solvent intermediate storage tank. The centrifuged slurry is screened through the first vibrating screen to remove the wet fine powder, which is transported to the feed kettle feed port via the first conveyor belt. The screened wet coarse material enters the second centrifuge. After centrifugation in the second centrifuge, the filtrate enters the solvent intermediate storage tank. The centrifuged slurry is screened through the second vibrating screen to remove the wet fine powder, which is transported to the feed kettle feed port via the second conveyor belt. The screened wet coarse material enters the fluidized bed dryer for hot air drying. After drying, the finished product is stored in the product tank. The hot air from the fluidized bed dryer enters the first cyclone separator and the second cyclone separator, respectively, to remove the cumene peroxide powder from the circulating hot air and collect it in the powder intermediate storage tank. Nitrogen is then used to transport the powder to the powder storage tank. The gas is discharged from the exhaust port through a filter to filter the powder. When enough powder is collected in the powder storage tank, it is put into the liquid kettle as the raw material for hot melting. The hot air that removes the solid powder is heated by the heater and then circulated for the drying process of the fluidized bed drying.

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

[0020] (1) The utility model separates the solvent and the solid as much as possible through secondary centrifugation, thereby reducing the energy consumption of the subsequent drying process, improving the efficiency, and reducing the loss of the solvent in the drying process, so that the solvent can be recycled as much as possible.

[0021] (2) The utility model separates the uncrystallized powder from the crystallized powder through secondary screening, and the powder is transported back to the liquid kettle through a conveyor belt to be re-dissolved and then recrystallized, thereby reducing the loss of raw materials, lowering the energy consumption of the drying process, and improving the efficiency of the drying process.

[0022] (3) The utility model removes cumene peroxide powder from the circulating hot air through a secondary cyclone separator and collects it in an intermediate powder storage tank. Nitrogen is then used to transport the powder to the powder storage tank. The gas is then discharged from the exhaust port through a filter screen to filter the powder. When enough powder has been collected in the powder storage tank, it is fed into the liquid kettle as raw material for heat melting. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic structural diagram of a drying system for cumene peroxide according to the present invention;

[0025] In the figure: 1. liquid kettle; 101. solvent pipeline; 102. isopropyl benzene peroxide raw material pipeline; 2. condenser; 3. crystallizer; 4. first centrifuge; 5. first vibrating screen; 6. second centrifuge; 7. second vibrating screen; 8. solvent intermediate storage tank; 801. solvent recycling transport pipe; 802. solvent pump; 9. fluidized bed dryer; 10. product tank; 11. first cyclone separator; 12. second cyclone separator; 13. powder intermediate storage tank; 1301. nitrogen pipeline; 1302. powder recycling pipeline; 14. powder storage tank; 15. exhaust port; 16. filter screen; 17. valve; 18. first conveyor belt; 19. second conveyor belt; 20. induced draft fan; 21. heater. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below in conjunction with the embodiments.

[0027] Example 1

[0028] like Figure 1 As shown, the drying system of isopropyl benzene peroxide includes a liquid kettle 1, the discharge port of the liquid kettle 1 is connected to a condenser 2, a crystallizer 3, a first centrifuge 4, a first vibrating screen 5, a second centrifuge 6, and a second vibrating screen 7 in sequence, the second vibrating screen 7 is connected to the feed port of a fluidized bed dryer 9, the discharge port of the fluidized bed dryer 9 is connected to a product tank 10, the first vibrating screen 5 and the second vibrating screen 7 are connected to the feed port of the liquid kettle 1 through a first conveyor belt 18 and a second conveyor belt 19 respectively, the first centrifuge 4 and the second centrifuge 6 are connected to the solvent intermediate storage tank 8 through a pipeline, the solvent intermediate storage tank 8 is connected to the liquid inlet of the liquid kettle 1 through a solvent recycling transport pipe 801, the fluidized bed dryer 9 is connected to a hot air recycling system, and the hot air recycling system is connected to a powder recovery system.

[0029] Through secondary centrifugation, the solvent and solid are separated as much as possible, which reduces the energy consumption of the subsequent drying process, improves the efficiency, and reduces the loss of solvent in the drying process, so that the solvent can be recycled as much as possible.

[0030] Through secondary screening, the uncrystallized powder is separated from the crystallized powder, and the powder is transported back to the liquid kettle 1 through a conveyor belt to be re-dissolved and then recrystallized, which reduces the loss of raw materials, reduces the energy consumption of the drying process, and improves the efficiency of the drying process.

[0031] It can be understood that the hot air recycling system includes a first cyclone separator 11 and a second cyclone separator 12 connected to the outlet of the fluidized bed dryer 9, the first cyclone separator 11 and the second cyclone separator 12 are connected in series, and the second cyclone separator 12 is connected to the inlet of the fluidized bed dryer 9 through a pipeline.

[0032] It can be understood that the first cyclone separator 11 and the second cyclone separator 12 are connected to the powder intermediate storage tank 13, and the powder intermediate storage tank 13 is provided with a nitrogen pipeline 1301. The powder intermediate storage tank 13 is connected to the powder storage tank 14 through a powder recycling pipeline 1302.

[0033] It can be understood that the powder storage tank 14 is provided with an exhaust port 15, and a filter screen 16 is installed at the bottom of the exhaust port 15. The powder storage tank 14 is located above the liquid kettle 1 and is connected to the feed port of the liquid kettle 1 through a pipeline, and a valve 17 is provided on the pipeline.

[0034] The cumene peroxide powder in the circulating hot air is removed by a secondary cyclone separator and collected in an intermediate powder storage tank 13. Nitrogen is then used to transport the powder to a powder storage tank 14. The gas is then discharged from an exhaust port 15 through a filter screen 16, filtering the powder. When sufficient powder has been collected in the powder storage tank 14, it is added to the feed liquid kettle 1 as raw material for heat melting.

[0035] It can be understood that a heater 21 is provided on the pipeline between the second cyclone separator 12 and the inlet of the fluidized bed dryer 9 .

[0036] It can be understood that an induced draft fan 20 is provided on the pipeline between the first cyclone separator 11 and the outlet of the fluidized bed dryer 9 .

[0037] It can be understood that the liquid reactor 1 is provided with a solvent pipeline 101 and a cumene peroxide raw material pipeline 102.

[0038] It can be understood that a solvent pump 802 is provided on the solvent recycling transport pipe 801 .

[0039] Working principle: ethanol and isopropyl benzene peroxide are added to the liquid kettle 1 through the solvent pipeline 101 and the isopropyl benzene peroxide raw material pipeline 102, and heated and mixed. After cooling through the condenser 2, the crystallizer 3 in the machine crystallizes and settles. After centrifugation in the first centrifuge 4, the filtrate enters the solvent intermediate storage tank 8 for storage. The slurry after centrifugation is screened out with wet fine powder through the first vibrating screen 5, and is transported to the feed port of the liquid kettle 1 through the first conveyor belt 18. The screened wet coarse material enters the second centrifuge 6. After centrifugation in the second centrifuge 6, the filtrate enters the solvent intermediate storage tank 8 for storage. The slurry after centrifugation is screened out with wet fine powder through the second vibrating screen 7, and is transported to the feed port of the liquid kettle 1 through the second conveyor belt 19. The screened wet coarse material enters the fluidized bed dryer 9 and is dried by hot air. After drying, the finished product enters the product tank 10. The hot air from the outlet of fluidized bed dryer 9 enters first cyclone separator 11 and second cyclone separator 12 in sequence, removing cumene peroxide powder from the circulating hot air and collecting it in intermediate powder storage tank 13. Nitrogen then transports the powder to powder storage tank 14, where the gas is discharged from exhaust port 15 after filtering the powder through filter 16. When sufficient powder has accumulated in powder storage tank 14, it is added to liquid kettle 1 as raw material for heat melting. The hot air that removes the solid powder is heated by heater 21 and then recycled for use in the fluidized bed drying process.

[0040] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.

[0041] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of the present invention.

Claims

1. A drying system for cumene peroxide, characterized in that: The invention comprises a liquid feed kettle (1), wherein the discharge port of the liquid feed kettle (1) is sequentially connected to a condenser (2), a crystallizer (3), a first centrifuge (4), a first vibrating screen (5), a second centrifuge (6), and a second vibrating screen (7); the second vibrating screen (7) is connected to the feed port of a fluidized bed dryer (9); the discharge port of the fluidized bed dryer (9) is connected to a product tank (10); the first vibrating screen (5) and the second vibrating screen (7) are connected to the feed port of the liquid feed kettle (1) via a first conveyor belt (18) and a second conveyor belt (19), respectively; the first centrifuge (4) and the second centrifuge (6) are connected to a solvent intermediate storage tank (8) via a pipeline; the solvent intermediate storage tank (8) is connected to the liquid inlet of the liquid feed kettle (1) via a solvent recycling transport pipe (801); the fluidized bed dryer (9) is connected to a hot air recycling system; and the hot air recycling system is connected to a powder recovery system.

2. The drying system for cumene peroxide according to claim 1, characterized in that: The hot air recycling system comprises a first cyclone separator (11) and a second cyclone separator (12) connected to the outlet of the fluidized bed dryer (9), wherein the first cyclone separator (11) and the second cyclone separator (12) are connected in series, and the second cyclone separator (12) is connected to the inlet of the fluidized bed dryer (9) through a pipeline.

3. The drying system for cumene peroxide according to claim 2, characterized in that: The first cyclone separator (11) and the second cyclone separator (12) are connected to a powder intermediate storage tank (13), a nitrogen pipeline (1301) is provided on the powder intermediate storage tank (13), and the powder intermediate storage tank (13) is connected to a powder storage tank (14) via a powder return pipeline (1302).

4. The drying system for cumene peroxide according to claim 3, characterized in that: The powder storage tank (14) is provided with an exhaust port (15), and a filter screen (16) is installed at the bottom of the exhaust port (15). The powder storage tank (14) is located above the liquid kettle (1) and is connected to the feed port of the liquid kettle (1) through a pipeline, and a valve (17) is provided on the pipeline.

5. The drying system for cumene peroxide according to claim 2, characterized in that: A heater (21) is provided on the pipeline between the second cyclone separator (12) and the inlet of the fluidized bed dryer (9).

6. The drying system for cumene peroxide according to claim 2, characterized in that: An induced draft fan (20) is provided on the pipeline between the first cyclone separator (11) and the outlet of the fluidized bed dryer (9).

7. The drying system for cumene peroxide according to claim 1, characterized in that: The liquid feed kettle (1) is provided with a solvent pipeline (101) and a cumene peroxide raw material pipeline (102).

8. The drying system for cumene peroxide according to claim 1, characterized in that: The solvent recycling transport pipe (801) is provided with a solvent pump (802).

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