Separation and purification device for 1, 4-cyclohexanediamine
By introducing cleaning components into the 1,4-cyclohexanediamine separation and purification device, and using high-pressure nozzles and stirred heating components to speed up the reaction and cleaning process, the problem of dismantling and cleaning of existing devices is solved, and high efficiency is achieved Cleanliness and recycling water resources.
Patent Information
- Application Number
- CN202420941280.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing 1,4-cyclohexanediamine separation and purification device needs to be disassembled and cleaned after use, which consumes a lot of manpower and time, and the residual chemical reagents have an impact on the environment and staff.
A device including a reactor, agitating assembly, heating assembly, condensing assembly and cleaning assembly is designed. The inner wall of the container is washed by a high-pressure spray head, eliminating the disassembly step, and the reaction speed is accelerated by using the agitating shaft and heating wire, and the condensing assembly collects evaporation. and cool down through the cooling chamber.
It realizes efficient cleaning of separation and purification devices without disassembling the container, saving manpower and time, improving cleaning efficiency, and reducing the impact on the environment through recycling water resources.
Smart Images
Figure CN222287263U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of separation and purification devices, and specifically relates to a separation and purification device for 1,4-cyclohexanediamine. Background Art
[0002] 1,4-cyclohexanediamine is used as an active agent and catalyst in chemical reactions in polymer synthesis and dye preparation. It can also be used in the biomedical field to prepare certain drugs and biomaterials. Therefore, a mixture of cyclohexanone and ammonia water is required to react chemically to generate 1,4-cyclohexanediamine. After generation, 1,4-cyclohexanediamine needs to be separated and purified.
[0003] At present, existing separation and purification devices often use distillation to separate and purify, but the existing separation and purification devices do not have cleaning components. After use, the containers on the device need to be disassembled for cleaning, which requires a lot of manpower. The chemical reagents remaining on the inner wall of the container will also affect the surrounding environment and staff.
[0004] Therefore, in view of the problem that the existing 1,4-cyclohexanediamine separation and purification device does not have a cleaning component and the method of disassembling the container for cleaning requires a lot of manpower and time, the existing 1,4-cyclohexanediamine separation and purification device is improved by adding a cleaning component so that the separation and purification device can be cleaned without disassembling the container, thereby improving the efficiency of cleaning the separation and purification device. Utility Model Content
[0005] In order to overcome the problem that the existing 1,4-cyclohexanediamine separation and purification device does not have a cleaning component, the disassembly and cleaning method requires a lot of manpower and time.
[0006] The technical scheme of the utility model is: a separation and purification device for 1,4-cyclohexanediamine, comprising a reaction kettle, a stirring component, a heating component, a condensing component and a cleaning component; the reaction kettle is a stainless steel tank structure with a liquid outlet pipe at the bottom, a condensing component is plugged into the reaction kettle, a stirring component is plugged into the reaction kettle, an anti-corrosion heating component is plugged into the reaction kettle, and a cleaning component is arranged on the outside of the reaction kettle and the condensing component.
[0007] Preferably, the generation rate of 1,4-cyclohexanediamine produced by the reaction of ammonia water and cyclohexanone is accelerated by a stirring component and a heating component, the evaporated water and ammonia gas are cooled and collected by a condensing component to facilitate subsequent processing, and the condensing component and the reactor are rinsed by a cleaning component, thereby eliminating the step of workers disassembling the reactor and the condensing component, saving time and manpower, and improving the efficiency of the cleaning separation and purification device.
[0008] Preferably, the stirring assembly includes a stirring shaft and a motor; a stirring shaft with anti-corrosion stirring blades on the outer side is inserted into the reactor, and a transmission element is installed on the top of the reactor to connect the motor on the stirring shaft. After the motor is started, the transmission element drives the stirring shaft to rotate, and the stirring blades stir to accelerate the reaction of ammonia water and cyclohexanone.
[0009] Preferably, the heating component includes a heating wire and a shell; the heating wire is inserted into the reactor, and the outer side of the heating wire is sleeved with a stainless steel shell. The heating wire can heat the solution inside the reactor. On the one hand, it can accelerate the reaction of ammonia water and cyclohexanone. On the other hand, it can evaporate the excess ammonia water after the reaction by increasing the temperature, so as to separate and purify 1,4-cyclohexanediamine. The stainless steel shell has strong corrosion resistance and can prevent the heating wire from being corroded by ammonia water.
[0010] Preferably, the condensation component includes a No. 1 condenser, a No. 2 condenser, and an ammonia collection barrel; the reactor is plugged with a No. 1 condenser with a double-layer structure, the No. 1 condenser is plugged with a No. 2 condenser, and the other end of the No. 2 condenser is connected to an ammonia collection barrel containing a dilute sulfuric acid solution. After the evaporated water and ammonia go up along the pipeline into the No. 1 condenser, the water turns back into liquid after being cooled, and the ammonia with a lower boiling point enters the No. 2 condenser and then enters the ammonia collection barrel, where it is absorbed by the dilute sulfuric acid solution and waits for subsequent treatment.
[0011] Preferably, the condensation component also includes a cooling box; a cooling box filled with coolant is placed on the reactor, and the cooling box is connected to the No. 1 condenser tube through a circulation pipe. The double-layer structure of the No. 1 condenser tube has a cavity structure inside. The coolant absorbs the heat of the internal steam through the cavity structure, so that the steam is cooled to form water. The cooling box can cool the coolant. A reflux valve is provided at the bottom of the No. 1 condenser tube to prevent water vapor from flowing back.
[0012] Preferably, the cleaning component includes a water tank and a high-pressure nozzle; a water tank placed on the ground is provided on the rear side of the reactor, and a high-pressure nozzle connected to the water tank through a hose is plugged into the reactor and the No. 1 condenser. The high-pressure nozzle has a built-in pump that can pump water out of the water tank and spray it into the No. 1 condenser and the reactor to rinse the No. 1 condenser and the reactor.
[0013] Preferably, the cleaning component also includes a connecting seat; the connecting seat is sleeved on the outside of the hose, and the connecting seat is plugged into the reaction kettle and the No. 1 condenser. The connecting seat can fix the high-pressure nozzle on the reaction kettle and the No. 1 condenser to prevent the high-pressure nozzle from falling off due to the recoil force generated by the high-pressure water column.
[0014] Beneficial effects of the utility model:
[0015] 1. By installing a cleaning component plugged into each container of the 1,4-cyclohexanediamine separation and purification device, the inner wall of the container is cleaned by a high-pressure water gun with strong impact force formed by spraying pure water under pressure, and the residual chemical reagents on the inner wall are washed clean. At the same time, the pipeline can transmit the pure water generated in the distillation process to the water tank for subsequent washing of the separation and purification device, thereby saving water resources;
[0016] 2. The stirring shaft is driven by a motor to rotate to speed up the mixing of cyclohexanone and ammonia water for preparing 1,4-cyclohexanediamine, thereby accelerating the generation rate of 1,4-cyclohexanediamine. A stainless steel shell of the same material as the reactor is provided on the outside of the heating wire, which has a certain corrosion resistance and prevents the heating wire from being corroded by ammonia water. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 The first stereoscopic structure schematic diagram of the separation and purification device of 1,4-cyclohexanediamine of the utility model is shown;
[0018] Figure 2 The second stereoscopic structure schematic diagram of the separation and purification device of 1,4-cyclohexanediamine of the utility model is shown;
[0019] Figure 3 The schematic diagram of the cross-sectional three-dimensional structure of the device for separating and purifying 1,4-cyclohexanediamine of the utility model is shown;
[0020] Figure 4 The three-dimensional structure diagram of the reaction kettle, stirring rent and heating component of the separation and purification device of 1,4-cyclohexanediamine of the utility model is shown;
[0021] Figure 5 The schematic diagram of the cross-sectional three-dimensional structure of the heating component of the device for separating and purifying 1,4-cyclohexanediamine of the utility model is shown;
[0022] Figure 6 Shown is a schematic diagram of the three-dimensional structure of the No. 1 condenser of the 1,4-cyclohexanediamine separation and purification device of the utility model.
[0023] Explanation of the reference numerals: 1. Reactor; 2. Stirring assembly; 3. Heating assembly; 4. Condensation assembly; 5. Cleaning assembly; 201. Stirring shaft; 202. Motor; 301. Heating wire; 302. Housing; 401. Condenser No. 1; 402. Condenser No. 2; 403. Ammonia collection barrel; 404. Cooling box; 501. Water tank; 502. High-pressure nozzle; 503. Connecting seat. DETAILED DESCRIPTION
[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0025] See also Figure 1-2 The utility model provides an embodiment: a separation and purification device for 1,4-cyclohexanediamine includes a reactor 1, a stirring component 2, a heating component 3, a condensing component 4, and a cleaning component 5; the reactor 1 is a stainless steel tank structure with a liquid outlet pipe at the bottom, the reactor 1 is plugged with a condensing component 4, the reactor 1 is plugged with a stirring component 2, the reactor 1 is plugged with an anti-corrosion heating component 3, and the reactor 1 and the condensing component 4 are provided with a cleaning component 5 outside. The stirring component 2 and the heating component 3 are used to accelerate the generation rate of 1,4-cyclohexanediamine produced by the reaction of ammonia water and cyclohexanone, the condensing component 4 cools and collects the evaporated water and ammonia gas, which is convenient for subsequent processing, and the cleaning component 5 rinses the condensing component 4 and the reactor 1, eliminating the step of disassembling the reactor 1 and the condensing component 4 by the staff, saving time and manpower, and improving the efficiency of the cleaning separation and purification device.
[0026] See also Figure 3-4 In this embodiment, the stirring component 2 includes a stirring shaft 201 and a motor 202; the stirring shaft 201 with an anti-corrosion stirring blade on the outside is inserted into the reactor 1, and a transmission element is installed on the top of the reactor 1 to connect the motor 202 on the stirring shaft 201; the heating component 3 includes a heating wire 301 and a shell 302; the heating wire 301 is inserted into the reactor 1, and the stainless steel shell 302 is sleeved on the outside of the heating wire 301. After the motor 202 is started, the transmission element drives the stirring shaft 201 to rotate, and the stirring blade stirs to accelerate the reaction of ammonia water and cyclohexanone. The heating wire 301 can heat the solution inside the reactor 1. On the one hand, it can accelerate the reaction of ammonia water and cyclohexanone. On the other hand, it can evaporate the excess ammonia water after the reaction by heating, so as to separate and purify 1,4-cyclohexanediamine. The stainless steel shell 302 has strong corrosion resistance and can prevent the heating wire 301 from being corroded by ammonia water.
[0027] See also Figure 5-6In this embodiment, the condensation assembly 4 includes a No. 1 condenser 401, a No. 2 condenser 402, and an ammonia collection barrel 403; the No. 1 condenser 401 with a double-layer structure is plugged into the reactor 1, the No. 1 condenser 401 is plugged into the No. 2 condenser 402, and the other end of the No. 2 condenser 402 is connected to the ammonia collection barrel 403 containing a dilute sulfuric acid solution. The condensation assembly 4 also includes a cooling box 404; a cooling box 404 filled with a coolant is placed on the reactor 1, and a circulation pipe is passed between the cooling box 404 and the No. 1 condenser 401. The evaporated water and ammonia go up along the pipeline into the No. 1 condenser 401. After being cooled, the water turns back into liquid, and the ammonia with a lower boiling point goes into the No. 2 condenser 402, and then into the ammonia collection barrel 403, where it is absorbed by the dilute sulfuric acid solution and waits for subsequent treatment. The double-layer structure of the No. 1 condenser 401 has a cavity structure inside. The coolant absorbs the heat of the internal steam through the cavity structure, cooling the steam to form water. The cooling box 404 can cool the coolant. A reflux valve is provided at the bottom of the No. 1 condenser 401 to prevent water vapor from flowing back.
[0028] See also Figure 5-6 In this embodiment, the cleaning component 5 includes a water tank 501 and a high-pressure nozzle 502; a water tank 501 placed on the ground is arranged at the rear side of the reactor 1, and a high-pressure nozzle 502 connected to the water tank 501 through a hose is plugged into the reactor 1 and the first condenser 401, and the cleaning component 5 also includes a connecting seat 503; a connecting seat 503 is sleeved on the outer side of the hose, and the connecting seat 503 is plugged into the reactor 1 and the first condenser 401, and the high-pressure nozzle 502 has a built-in pump, which can pump out the water in the water tank 501 and spray it into the No. 1 condenser 401 and the reactor 1 to rinse the No. 1 condenser 401 and the reactor 1, and the connecting seat 503 can fix the high-pressure nozzle 502 on the reactor 1 and the No. 1 condenser 401 to prevent the high-pressure nozzle 502 from falling off due to the recoil force generated by the high-pressure water column.
[0029] When working, the staff first puts cyclohexanone and ammonia water for preparing 1,4-cyclohexanediamine into the reactor 1, and then starts the heating wire 301 and the motor 202. The heating wire 301 heats the solution in the reactor 1, and the motor 202 drives the stirring shaft 201 to rotate, so as to accelerate the reaction of cyclohexanone and ammonia water and reduce the time for the generation of 1,4-cyclohexanediamine.
[0030] After the production of 1,4-cyclohexanediamine is completed, heating is continued. The temperature of the heating rod is controlled by an industrial computer to be below the boiling point of 1,4-cyclohexanediamine. Ammonia water with a boiling point lower than that of 1,4-cyclohexanediamine will evaporate into gas and flow upward. When it reaches the No. 1 condenser 401, the circulating coolant takes away the heat, and the water vapor turns back into liquid. The ammonia gas with a lower boiling point continues to flow upward along the No. 2 condenser 402 into the ammonia gas collection barrel 403, and is absorbed by the dilute sulfuric acid solution inside. The cooled water flows along the pipeline into the water tank 501.
[0031] After the 1,4-cyclohexanediamine inside is taken out, the high-pressure nozzle 502 is started, and the pump draws the water in the water tank 501 and sprays it out under pressure to flush the inner wall of the No. 1 condenser 401 and the reactor 1 to flush away the residual solution inside. Finally, the flushing waste liquid is collected from the discharge pipe of the reactor 1 and waits for subsequent treatment.
[0032] Through the above steps, a cleaning component 5 inserted into each container of the separation and purification device is installed on the 1,4-cyclohexanediamine separation and purification device, and the inner wall of the container is cleaned by a high-pressure water gun with strong impact formed by spraying pure water under pressure, so that the residual chemical reagents on the inner wall are rinsed clean. At the same time, the pipeline can transmit the pure water generated in the distillation process to the water tank 501 for subsequent flushing of the separation and purification device, saving water resources, and solving the problem that the existing 1,4-cyclohexanediamine separation and purification device does not have the cleaning component 5, and the disassembly and cleaning method requires a lot of manpower and time.
[0033] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.
Claims
1. A device for separating and purifying 1,4-cyclohexanediamine, comprising a reaction kettle (1); characterized in that: The invention also comprises a stirring component (2), a heating component (3), a condensing component (4), and a cleaning component (5); the reaction kettle (1) is a stainless steel tank structure having a liquid outlet pipe at the bottom; the reaction kettle (1) is plugged with a condensing component (4); the reaction kettle (1) is plugged with a stirring component (2); the reaction kettle (1) is plugged with an anti-corrosion heating component (3); and the outside of the reaction kettle (1) and the condensing component (4) is provided with a cleaning component (5).
2. A separation and purification device for 1,4-cyclohexanediamine according to claim 1, characterized in that: The stirring assembly (2) comprises a stirring shaft (201) and a motor (202); the stirring shaft (201) with an anti-corrosion stirring blade sleeved on the outside is inserted into the reaction kettle (1), and a transmission element is installed at the top of the reaction kettle (1) to connect the motor (202) on the stirring shaft (201).
3. A separation and purification device for 1,4-cyclohexanediamine according to claim 1, characterized in that: The heating component (3) comprises a heating wire (301) and an outer shell (302); the heating wire (301) is inserted into the reaction kettle (1), and the outer side of the heating wire (301) is sleeved with a stainless steel outer shell (302).
4. A separation and purification device for 1,4-cyclohexanediamine according to claim 1, characterized in that: The condensation assembly (4) comprises a No. 1 condenser (401), a No. 2 condenser (402), and an ammonia collection barrel (403); the No. 1 condenser (401) having a double-layer structure is plugged into the reaction kettle (1), the No. 1 condenser (401) is plugged into the No. 2 condenser (402), and the other end of the No. 2 condenser (402) is connected to the ammonia collection barrel (403) containing a dilute sulfuric acid solution.
5. A separation and purification device for 1,4-cyclohexanediamine according to claim 4, characterized in that: The condensation assembly (4) also includes a cooling box (404); a cooling box (404) filled with a coolant is placed on the reaction kettle (1), and the cooling box (404) is connected to the first condenser tube (401) through a circulation pipeline.
6. A separation and purification device for 1,4-cyclohexanediamine according to claim 4, characterized in that: The cleaning component (5) comprises a water tank (501) and a high-pressure nozzle (502); a water tank (501) placed on the ground is arranged at the rear side of the reaction kettle (1), and a high-pressure nozzle (502) connected to the water tank (501) via a hose is plugged into the reaction kettle (1) and the first condenser (401).
7. A separation and purification device for 1,4-cyclohexanediamine according to claim 6, characterized in that: The cleaning assembly (5) also includes a connecting seat (503); the connecting seat (503) is sleeved on the outside of the hose, and the connecting seat (503) is plugged into the reaction kettle (1) and the first condenser (401).