Device for producing high-purity m-phenylenediamine
By designing a high-purity m-phenylenediamine production device, using condensate and efficient separation equipment, the problem of low resource utilization of existing equipment is solved, and efficient and stable m-phenylenediamine production is achieved.
Patent Information
- Application Number
- CN202420888870.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The resource utilization rate of existing m-phenylenediamine production equipment is low, resulting in waste of resources and equipment limitations during the production process.
A high-purity m-phenylenediamine production device including kettle body A, kettle body B and kettle body C was designed, and each device was connected through a pipeline, and equipped with a membrane filter, a mixed amine storage tank, a decoking tower, and a m-amine tower. , decolorization tower and adjacent alignment tower adopt inter-series to improve the gas phase purity, use condensate as a cooling medium, combine with efficient separation equipment and shock absorber design to improve resource utilization and product separation effect.
Improve the production efficiency and purity of m-phenylenediamine, improve resource utilization through the reuse of condensate and the application of efficient separation equipment, and reduce equipment vibration through the design of shock absorbers and springs, ensuring stable production process.
Smart Images
Figure CN222240186U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of m-phenylenediamine production equipment, in particular to a device for producing high-purity m-phenylenediamine. Background Art
[0002] Metaphenylenediamine is an important organic chemical raw material and intermediate, widely used in dye, detergent, rubber, national defense and other industries. Due to its strong coupling ability, metaphenylenediamine can be used to produce azo dyes, fur dyes, reactive dyes and sulfur dyes in the dye industry. It is also used to make hair dyes, petroleum additives and rubber antioxidants. However, the resource utilization rate of the equipment used to produce metaphenylenediamine is low, which often causes some waste of resources, resulting in certain limitations in the equipment for producing metaphenylenediamine. To this end, we propose a device for producing high-purity metaphenylenediamine. Utility Model Content
[0003] In view of the problems in the prior art, the utility model provides a device for producing high-purity meta-phenylenediamine.
[0004] The utility model solves the technical problem by adopting a technical solution that is a high-purity m-phenylenediamine production device, comprising a kettle body A, a kettle body B and a kettle body C, wherein the kettle body A, the kettle body B and the kettle body C are connected to each other through a pipeline, and the discharge end of the kettle body C is connected to a membrane filter through a pipeline, the discharge end of the membrane filter is connected to a mixed amine storage tank through a pipeline, and the discharge end of the mixed amine storage tank is connected to a decoking tower through a pipeline, the discharge end of the decoking tower is connected to an amine tower through a pipeline, and the discharge end of the amine tower is connected to a decolorizing tower and an ortho-para tower through a pipeline;
[0005] The outer peripheral surfaces of the kettle body A, the kettle body B and the kettle body C are all welded with ring frames that can be used for connection, and the bottom end surfaces of the ring frames are equipped with a ring seat located on the outer periphery of the kettle body A through bolts, the bottom end surfaces of the ring seats are integrally constructed with legs that can be used for auxiliary support, and there are multiple groups of legs, a pipe seat is slidably installed on the end of the leg away from the ring seat, and a chassis is integrally constructed on the end of the pipe seat away from the leg, and a spring and a shock absorber located on the inner side of the pipe seat are assembled between the pipe seat and the legs.
[0006] By adopting the above technical scheme, when producing m-phenylenediamine, the raw materials are first transported to the inside of the kettle reactor composed of kettle body A, kettle body B and kettle body C in an optimized ratio for reaction, and the raw materials are stirred and mixed uniformly at a fixed speed by the stirring structure component inside the kettle body to form a negative pressure for recycling the catalyst. At the same time, kettle body A, kettle body B and kettle body C are connected in series with each other, so as to improve the gas phase purity to ensure the reaction efficiency. The mixed amine obtained after the reaction is removed from the catalyst by the membrane filtration system in the membrane filter, and then enters the mixed amine storage tank and then enters the corresponding separation system for separation treatment. The mixed amine is firstly removed from the solvent and water, and the obtained solvent can be recycled and reused, while the water is sent to wastewater treatment. Then, the mixed amine is conveniently transported into the decoking tower to remove tar, and the tar is conveniently concentrated and discharged from the system; at the same time, the mixed amine separated from the tar is convenient to enter the meta-amine tower and separate the ortho-para position from the meta position, and then meta-phenylenediamine is obtained, and then enters the decolorization tower for decolorization, and then high-purity meta-phenylenediamine can be produced, and the ortho-phenylenediamine and para-phenylenediamine mixture produced in this process is convenient to enter the ortho-para tower for separation, and the top of the ortho-para tower can obtain ortho-phenylenediamine; and the para-phenylenediamine obtained in the tower body enters the decolorization tower for purification to obtain the para-phenylenediamine product, and in this process, the condensate generated in the tower kettle can be used as the tower top cooling medium to improve resource utilization, and high-efficiency separation equipment is used to improve product separation effect;
[0007] When the corresponding reactor fails and needs maintenance, the bolts between the ring frame and the ring seat can be removed, and then the reactor body and the ring seat carrying the legs can be separated from each other, which is convenient for disassembly and maintenance of the reactor body. At the same time, the shock absorber and spring on the inner side of the leg can cooperate with each other to reduce the vibration intensity transmitted to the chassis when the reactor body is in operation and vibrates. The pipe seat and the leg can slide and displace with each other and cannot be separated from each other, which is convenient for reducing the separation between the leg and the chassis, and the shock absorber and spring can stably buffer and damp the reactor, reduce the displacement of the reactor due to vibration, so as to stably produce and process m-phenylenediamine.
[0008] Specifically, a rubber ring for protection is bonded to one side of the supporting leg close to the chassis.
[0009] By adopting the above technical solution, the rubber ring has a certain elasticity, which is convenient for reducing the damage caused by friction when the supporting leg and the chassis contact each other.
[0010] Specifically, inclined blocks for auxiliary support are welded between the ring frame and the kettle body A, and there are multiple groups of inclined blocks.
[0011] By adopting the above technical solution, the inclined block facilitates improving the stability of the ring frame.
[0012] Specifically, the peripheral opening ends of the kettle body A, the kettle body B and the kettle body C are all equipped with safety valve assemblies.
[0013] By adopting the above technical solution and by reasonably arranging the safety valve assembly, the reaction can be ensured to be safer and more stable.
[0014] Specifically, the inner sides of the kettle body A, the kettle body B and the kettle body C are all equipped with spoilers.
[0015] By adopting the above technical solution, the spoiler is arranged inside the reactor, which can disturb the fluid in the reactor tube, so that the gas, liquid and solid three phases of the reaction flow and mix in the reactor reactor. The materials are mixed and the heat transfer effect is good under the action of the spoiler element in the reactor, and the gas, liquid and solid three phases are fully contacted and the reaction speed is fast.
[0016] Specifically, the exhaust ends of the kettle body A, the kettle body B and the kettle body C are all equipped with tail gas emission components.
[0017] By adopting the above technical solution and optimizing the tail gas emission components, the tail gas emission facilities can be used to improve the gas phase purity to ensure the reaction efficiency.
[0018] Compared with the prior art, the utility model has the following beneficial effects:
[0019] 1. The technical solution of this application adopts the condensate produced in the tower bottom as the tower top cooling medium to improve resource utilization, and adopts high-efficiency separation equipment to improve product separation effect, providing a new method for the production of high-purity m-phenylenediamine.
[0020] 2. The technical solution of the present application is designed with a ring frame, a ring seat, a support leg, a pipe seat, a shock absorber, a spring and a chassis. When the corresponding reactor fails and needs maintenance, the bolts between the ring frame and the ring seat can be removed, and then the reactor body and the ring seat carrying the support leg can be separated from each other, which is convenient for disassembly and maintenance of the reactor body. At the same time, the shock absorber and the spring on the inner side of the support leg can cooperate with each other to reduce the vibration intensity transmitted to the chassis when the reactor body is operating and vibrating, and the pipe seat and the support leg can slide and displace with each other but cannot be separated from each other, which is convenient for reducing the separation between the support leg and the chassis, and the shock absorber and the spring can stably buffer and damp the reactor, reduce the displacement of the reactor due to vibration, so as to stably produce and process m-phenylenediamine. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0022] Figure 1 It is a schematic plan view of the structure in which the kettle body A, kettle body B and kettle body C are connected to each other in the utility model;
[0023] Figure 2 It is a schematic plan view of the connection structure of the meta-amine tower, the decolorization tower and the ortho-para tower of the utility model;
[0024] Figure 3 It is a schematic diagram of the connection structure between the ring frame and the ring seat of the utility model;
[0025] Figure 4 It is a schematic cross-sectional view of the inner structure of the support leg of the utility model;
[0026] In the figure: 1. kettle body A; 2. kettle body B; 3. kettle body C; 4. spoiler; 5. exhaust emission assembly; 6. membrane filter; 7. mixed amine storage tank; 8. safety valve assembly; 9. decoking tower; 10. meta-amine tower; 11. decolorization tower; 12. ortho-para tower; 13. ring frame; 14. ring seat; 15. support leg; 16. pipe seat; 17. chassis; 18. shock absorber; 19. spring; 20. rubber ring; 21. inclined block. DETAILED DESCRIPTION
[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0028] See also Figure 1-3 The utility model embodiment provides a technical solution: a device for producing high-purity metaphenylenediamine, comprising a kettle body A1, a kettle body B2 and a kettle body C3, wherein the kettle bodies A1, B2 and C3 are interconnected through pipelines, and the discharge end of the kettle body C3 is connected to a membrane filter 6 through a pipeline, the discharge end of the membrane filter 6 is connected to a mixed amine storage tank 7 through a pipeline, and the discharge end of the mixed amine storage tank 7 is connected to a decoking tower 9 through a pipeline, the discharge end of the decoking tower 9 is connected to an amine tower 10 through a pipeline, and the discharge end of the amine tower 10 is connected to a decolorizing tower 11 and an adjacent amine tower 12 through a pipeline. The kettle body A1, the kettle body B2 and the kettle body C3 are all welded with a ring frame 13 which can be used for connection on the outer peripheral surfaces, and the bottom end surface of the ring frame 13 is assembled with a ring seat 14 located on the outer periphery of the kettle body A1 by bolts, and the bottom end surface of the ring seat 14 is integrally constructed with a support leg 15 which can be used for auxiliary support, and there are multiple groups of the support legs 15, and a pipe seat 16 is slidably mounted on one end of the support leg 15 away from the ring seat 14, and a chassis 17 is integrally constructed on one end of the pipe seat 16 away from the support leg 15, and a spring 19 and a shock absorber 18 located on the inner side of the pipe seat 16 are assembled between the pipe seat 16 and the support leg 15.
[0029] When in use, when producing m-phenylenediamine, the raw materials are first transported to the kettle reactor composed of kettle body A1, kettle body B2 and kettle body C3 in an optimized ratio for reaction, and the stirring structure components inside the kettle body use a fixed speed to stir and mix evenly and form a negative pressure to recycle the catalyst. At the same time, kettle body A1, kettle body B2 and kettle body C3 are connected in series with each other, so as to improve the purity of the gas phase to ensure the reaction efficiency. The mixed amine obtained after the reaction is removed from the catalyst by the membrane filtration system in the membrane filter 6, and then enters the mixed amine storage tank 7 and enters the corresponding separation system for separation treatment. The mixed amine is first removed from the solvent and water, and the obtained solvent can be recycled, and the water is sent to wastewater treatment, which is then convenient. The mixed amine is transported into the decoking tower 9 to remove tar, and the tar is conveniently concentrated and discharged from the system; at the same time, the mixed amine separated from the tar is convenient to enter the meta-amine tower 10 to separate the ortho-para position from the meta position, and then meta-phenylenediamine is obtained, and then enters the decolorization tower 11 for decolorization, and then high-purity meta-phenylenediamine can be produced. In this process, the mixture of ortho-phenylenediamine and para-phenylenediamine produced is convenient to enter the ortho-para tower 12 for separation, and the top of the ortho-para tower 12 can obtain ortho-phenylenediamine; and the para-phenylenediamine obtained in the tower body enters the decolorization tower 11 for purification to obtain the para-phenylenediamine product, and in this process, the condensate generated in the tower kettle can be used as the tower top cooling medium to improve resource utilization, and high-efficiency separation equipment is used to improve product separation effect;
[0030] When the corresponding reactor fails and needs maintenance, the bolts between the ring frame 13 and the ring seat 14 can be removed, and then the reactor body and the ring seat 14 carrying the support leg 15 can be separated from each other, which is convenient for disassembly and maintenance of the reactor body. At the same time, the shock absorber 18 and the spring 19 on the inner side of the support leg 15 can cooperate with each other to reduce the vibration intensity transmitted to the chassis 17 when the reactor body is in operation and vibrates. The pipe seat 16 and the support leg 15 can slide and displace with each other and cannot be separated from each other, which is convenient for reducing the separation between the support leg 15 and the chassis 17, and the shock absorber 18 and the spring 19 can stably buffer and damp the reactor, reduce the displacement of the reactor due to vibration, and thus stably produce and process m-phenylenediamine.
[0031] like Figure 4 As shown, a rubber ring 20 for protection is bonded to one side of the leg 15 close to the chassis 17 .
[0032] When in use, the rubber ring 20 has a certain elasticity, which is convenient for reducing the damage caused by friction when the supporting leg 15 and the chassis 17 contact each other.
[0033] like Figure 3 As shown, inclined blocks 21 for auxiliary support are welded between the ring frame 13 and the kettle body A1, and there are multiple groups of inclined blocks 21.
[0034] When in use, the inclined block 21 is convenient for improving the stability of the ring frame 13 .
[0035] like Figure 1 As shown, the outer peripheral opening ends of the kettle body A1, the kettle body B2 and the kettle body C3 are all equipped with safety valve assemblies 8.
[0036] When in use, a properly arranged safety valve assembly 8 can ensure that the reaction is safer and more stable.
[0037] like Figure 1 As shown, the inner sides of the kettle body A1, the kettle body B2 and the kettle body C3 are all equipped with spoilers 4.
[0038] When in use, the spoiler 4 is arranged inside the reactor, which can disturb the fluid in the reactor tube, so that the gas, liquid and solid phases of the reaction flow and mix in the reactor reactor. The materials are mixed and the heat transfer effect is good under the action of the spoiler element in the reactor, and the gas, liquid and solid three phases are in full contact and the reaction speed is fast.
[0039] like Figure 1 As shown, the exhaust ends of kettle body A1, kettle body B2 and kettle body C3 are all equipped with exhaust gas exhaust components 5.
[0040] When in use, through the optimized tail gas emission component 5, the tail gas emission facilities can be used to improve the gas phase purity to ensure the reaction efficiency.
[0041] The working principle and use process of the utility model are as follows: when in use, firstly, the corresponding structural components are installed in a suitable position. When producing m-phenylenediamine, firstly, raw materials such as hydrogen (gas phase), dinitrobenzene (liquid phase), catalyst (solid particles) are transported to the inside of the kettle reactor composed of kettle body A1, kettle body B2 and kettle body C3 according to the optimized ratio for reaction, and the stirring structural components inside thereof are used to stir and mix uniformly at a fixed speed and form a negative pressure for recycling the catalyst. At the same time, kettle body A1, kettle body B2 and kettle body C3 are connected in series, so as to The gas phase purity can be improved to ensure the reaction efficiency. The mixed amine obtained after the reaction is removed from the catalyst by the membrane filtration system in the membrane filter 6, and then enters the mixed amine storage tank 7 and enters the corresponding separation system for separation treatment. The mixed amine is firstly removed from the solvent and water, and the obtained solvent can be recycled and reused, and the water is sent to the wastewater treatment. Then, the mixed amine is conveniently transported into the decoking tower 9 to remove the tar, and the tar is conveniently concentrated and discharged from the system; at the same time, the mixed amine separated from the tar is convenient to enter the meta-amine tower 10 to separate the ortho-para position from the meta position, and then meta-phenylenediamine can be obtained, and then enters the decolorization tower 11 to Decolorization is performed, and then high-purity m-phenylenediamine can be produced. The mixture of o-phenylenediamine and p-phenylenediamine produced in this process can be conveniently entered into the o-para tower 12 for separation. The top of the o-para tower 12 can obtain o-phenylenediamine; and the p-phenylenediamine obtained in the tower body enters the decolorization tower 11 for purification to obtain the p-phenylenediamine product, and then mixed dinitrobenzene is used as a raw material for hydrogenation reaction, and high-purity m-phenylenediamine is obtained after refined separation. When the corresponding reactor fails and needs maintenance, the bolts between the ring frame 13 and the ring seat 14 can be removed, and then the reactor body and the carrying legs 15 can be separated. The ring seats 14 are separated from each other, which is convenient for disassembly and maintenance of the kettle body. At the same time, the shock absorber 18 and the spring 19 on the inner side of the support leg 15 can cooperate with each other to reduce the vibration intensity transmitted to the chassis 17 when the kettle body is in operation and vibrates. The pipe seat 16 and the support leg 15 can slide and displace with each other but cannot be separated from each other, which is convenient for reducing the separation between the support leg 15 and the chassis 17, and the shock absorber 18 and the spring 19 can stably buffer and damp the reactor, reduce the displacement of the reactor due to vibration, so that the production and processing of m-phenylenediamine can be stably carried out.
[0042] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.
Claims
1. A device for producing high-purity m-phenylenediamine, characterized in that: The invention comprises a kettle body A (1), a kettle body B (2) and a kettle body C (3), wherein the kettle body A (1), the kettle body B (2) and the kettle body C (3) are interconnected via a pipeline, and the discharge end of the kettle body C (3) is connected to a membrane filter (6) via a pipeline, the discharge end of the membrane filter (6) is connected to a mixed amine storage tank (7) via a pipeline, and the discharge end of the mixed amine storage tank (7) is connected to a decoking tower (9) via a pipeline, the discharge end of the decoking tower (9) is connected to an intermediate amine tower (10) via a pipeline, and the discharge end of the intermediate amine tower (10) is connected to a decolorizing tower (11) and an ortho-para tower (12) via a pipeline; The outer peripheral surfaces of the kettle body A (1), the kettle body B (2) and the kettle body C (3) are all welded with a ring frame (13) that can be used for connection, and the bottom end surface of the ring frame (13) is assembled with a ring seat (14) located on the outer periphery of the kettle body A (1) by bolts, and the bottom end surface of the ring seat (14) is integrally constructed with a support leg (15) that can be used for auxiliary support, and the support leg (15) has multiple groups, and a pipe seat (16) is slidably mounted on one end of the support leg (15) away from the ring seat (14), and a chassis (17) is integrally constructed on one end of the pipe seat (16) away from the support leg (15), and a spring (19) and a shock absorber (18) located on the inner side of the pipe seat (16) are assembled between the pipe seat (16) and the support leg (15).
2. A device for producing high-purity m-phenylenediamine according to claim 1, characterized in that: A rubber ring (20) for protection is bonded to one side of the supporting leg (15) close to the chassis (17).
3. A device for producing high-purity m-phenylenediamine according to claim 1, characterized in that: An inclined block (21) for auxiliary support is welded between the ring frame (13) and the kettle body A (1), and there are multiple groups of inclined blocks (21).
4. The device for producing high-purity m-phenylenediamine according to claim 1, characterized in that: The outer peripheral opening ends of the kettle body A (1), the kettle body B (2) and the kettle body C (3) are all equipped with safety valve assemblies (8).
5. The device for producing high-purity m-phenylenediamine according to claim 1, characterized in that: The inner sides of the kettle body A (1), the kettle body B (2) and the kettle body C (3) are all equipped with spoilers (4).
6. The device for producing high-purity m-phenylenediamine according to claim 1, characterized in that: The exhaust ends of the kettle body A (1), kettle body B (2) and kettle body C (3) are all equipped with tail gas exhaust components (5).