Safe separation device for 3, 3 '-diaminobenzidine

Abstract

The utility model relates to the technical field of diaminobenzidine manufacturing, and discloses a 3, 4-diaminobenzidine preparation device. The safe separation device comprises a reaction kettle, the top of the reaction kettle is fixedly connected with a sealing cover, the left end of the rear side of the top of the sealing cover is fixedly connected with a vacuum pump, the output end of the vacuum pump is fixedly connected with an exhaust pipe, and the bottom of the exhaust pipe communicates with the left end of the front side of the top of the sealing cover; the right side of the top of the sealing cover is communicated with a gas conveying pipe, a feeding opening is formed in the front side of the top of the sealing cover, and a placing box is slidably connected to the middle of the inner side of the reaction kettle. According to the utility model, air in the reaction kettle can be effectively pumped out through the matching of the vacuum pump and the exhaust pipe to form a vacuum environment, and then inert gas is filled through the gas conveying pipe, so that oxygen is efficiently isolated at low cost, efficient isolation of oxygen by a reagent under the condition of low cost is ensured, the production efficiency is improved, and the economic cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of 3,3'-diaminobenzidine manufacturing technology, and in particular to a safe separation device for 3,3'-diaminobenzidine. Background Technology

[0002] 3,3'-Diaminobenzidine is a chemical reagent widely used in dyes and pharmaceuticals, but it is highly toxic and carcinogenic. Current technologies using simple filtration and centrifugation expose operators to the reagent through inhalation and skin contact, and DAB dust can disperse during operation, causing environmental pollution. A safe separation device for 3,3'-diaminobenzidine can effectively prevent health threats to operators from contact with or inhalation of this substance, reducing the risk of poisoning and cancer, preventing dust dispersion and the volatilization of harmful gases, and minimizing pollution to air and soil. Furthermore, the safe separation device improves separation efficiency and product quality, ensuring the smooth operation of related experiments and production activities, and meeting the requirements of modern industry and scientific research for safety, environmental protection, and high efficiency.

[0003] A search revealed Chinese patent publication number CN119588279A, which discloses a wet electronic chemical separation and purification device, specifically relating to the field of wet electronic chemical technology. The device includes a transmission base, with a storage chamber fixedly connected to the top. Separation and purification seats are fixedly connected to the front and rear sides of the right side of the transmission base, respectively. A test tube turntable is movably connected to the top of the transmission base. This invention, by incorporating separation and purification seats, a vertical plate, a push-pull plate, a filter chamber, a storage chamber, and a test tube turntable, achieves automated and continuous processing of raw materials. The design of the separation and purification seats allows for sufficient reaction of the raw materials during purification, improving purification efficiency and effectiveness. The structural design of the vertical plate and push-pull plate makes operation more convenient. While ensuring equipment safety and resolving the issue of inadequate integration with wet electronic chemicals, which could lead to insufficient fusion of sodium sulfate and wet electronic chemicals and thus affect the initial passivation effect, traditional safety separation devices struggle to achieve efficient oxygen isolation at low cost in practical applications. Since 3,3'-diaminobenzidine is oxidized during separation, and existing equipment cannot provide a stable inert gas protective environment or has poor oxygen isolation, the oxidation reaction during separation leads to a decline in product quality, resulting in impurities or discoloration. Furthermore, the product quality issues caused by oxidation necessitate frequent adjustments to process parameters and the addition of purification steps, significantly reducing production efficiency and increasing time and economic costs. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a safe separation device for 3,3'-diaminobenzidine, which aims to improve the problem that traditional safe separation devices are difficult to achieve efficient isolation of oxygen under low-cost conditions, resulting in a decline in product quality due to oxidation reaction during separation, and increased time and economic costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a safe separation device for 3,3'-diaminobenzidine, comprising a reaction vessel, a sealing cover fixedly connected to the top of the reaction vessel, a vacuum pump fixedly connected to the left rear end of the top of the sealing cover, an exhaust pipe fixedly connected to the output end of the vacuum pump, the bottom of the exhaust pipe connected to the left front end of the top of the sealing cover, a gas supply pipe connected to the right side of the top of the sealing cover, a feed inlet provided on the front side of the top of the sealing cover, a placement box slidably connected to the middle of the inner side of the reaction vessel, a hole opened on the left side of the outer side of the reaction vessel, the outer side of the placement box slidably connected to the inside of the hole, a heat transfer plate fixedly connected to the lower middle part of the inner side of the reaction vessel, multiple heating wires fixedly connected to the bottom of the heat transfer plate, and a condensation recovery mechanism connected to the right side of the outer side of the reaction vessel.

[0006] Through the above technical solution: the reactor provides a stable space for the separation process, capable of withstanding internal pressure and temperature changes. The top sealing cover is tightly connected to it to form a sealed structure, preventing the leakage of harmful volatiles during separation. The vacuum pump and extraction pipe on the sealing cover can quickly remove air from the reactor, reducing the gas pressure. The gas delivery pipe injects inert gas to create a low-oxygen environment, preventing material oxidation and ensuring product quality. The feed inlet facilitates material feeding, and the sliding placement box facilitates material loading and unloading, reducing direct contact between personnel and materials and lowering safety risks. The heat transfer trough plate and heating wire in the lower middle part of the reactor's inner side constitute a heating component that can evenly conduct heat, promoting material separation at a suitable temperature and improving efficiency. This device achieves low-cost, high-efficiency, and safe material separation, ensuring production safety and product quality. The right side of the reactor's exterior is connected to a condensation recovery mechanism for cooling and collecting volatile components.

[0007] As a further description of the above technical solution:

[0008] The condensation recovery mechanism includes a recovery pipe. The left side of the recovery pipe is connected to the outside right side of the reactor. A fan is fixedly connected to the inside left end of the recovery pipe. An installation box is fixedly connected to the inside middle of the recovery pipe. Multiple condensation pipes are fixedly connected inside the installation box. The right end of the recovery pipe is connected to the top left side of the recovery cylinder. A moisture-proof support is fixedly connected to the bottom of the recovery cylinder. An air outlet cover is provided on the top of the recovery cylinder.

[0009] Through the above technical solution: the recovery pipe connects to the reaction vessel to form a channel for the recovery of harmful volatile components. The fan inside the pipe runs continuously to generate directional airflow, which pushes the gas containing harmful volatile components into the recovery pipe quickly, preventing harmful gases from accumulating around the device. Multiple condenser tubes built into the installation box form a high-efficiency heat exchange area. The high-temperature harmful volatile components are quickly cooled and liquefied through the circulation of cooling medium. The liquefied substances flow into the recovery cylinder for centralized storage, preventing the escape of harmful components and reducing harm to personnel and the environment. The moisture-proof support base at the bottom of the recovery cylinder prevents the recovered substances from getting damp and deteriorating. The vent cover at the top maintains stable pressure inside the cylinder and prevents harmful gas leakage. The entire mechanism effectively controls harmful volatile components and achieves green and safe separation operations.

[0010] As a further description of the above technical solution:

[0011] The left side of the placement box is threaded with a handle, and the front and rear sides of the handle are threaded with screws.

[0012] Through the above technical solution: the handle of the placement box is installed securely with threads, making it convenient for operators to push and pull the placement box, saving effort when transferring materials, avoiding direct contact with materials, improving operational safety, and the screws reinforce the handle to enhance connection stability and prevent it from falling off.

[0013] As a further description of the above technical solution:

[0014] A glass tank is provided on the front side of the reactor, and a glass plate is fixedly connected inside the glass tank.

[0015] With the above technical solution, the glass tank and glass plate on the front side of the reactor form a visual observation window, allowing operators to observe the separation of materials inside at any time without frequently opening the sealing cover, ensuring a stable separation environment and facilitating timely adjustment of process parameters.

[0016] As a further description of the above technical solution:

[0017] Two power supply blocks are fixedly connected to the bottom left end of the front side of the reactor, and power indicator lights are fixedly connected to the front side of each of the two power supply blocks.

[0018] Through the above technical solution, the power block and the power indicator light on the front can intuitively display the power status of the electrical components, making it easier for operators to detect equipment abnormalities and ensuring the stable operation of the separation device.

[0019] As a further description of the above technical solution:

[0020] Rubber columns are fixedly connected to the four corners of the bottom of the reactor, and the bottom of the multiple rubber columns is fixedly connected to the same moisture-proof board.

[0021] The above technical solution enhances the stability and practicality of the device by using rubber columns and moisture-proof boards at the bottom corners of the reactor. The soft rubber columns can absorb shock and reduce vibration during reactor operation, while the moisture-proof boards prevent the bottom of the reactor from getting damp.

[0022] As a further description of the above technical solution:

[0023] The moisture-proof board has a groove on its front side, and a storage box is slidably connected inside the groove.

[0024] The above technical solution allows for the use of a moisture-proof board with front grooves that fit into a storage box, making it convenient for operators to store separation tools and protective equipment.

[0025] As a further description of the above technical solution:

[0026] The moisture-proof board has four fixed support legs at its bottom corners, and the bottom of each of the support legs has a fixed rubber base.

[0027] Through the above technical solution, the support legs at the bottom of the moisture-proof board and the rubber base further improve the support height and stability of the device, and the rubber base increases the friction with the ground to prevent the device from sliding.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the vacuum pump and the suction pipe work together to effectively extract the air from the reaction vessel to form a vacuum environment. Then, the inert gas is introduced through the gas supply pipe to achieve low-cost and high-efficiency isolation of oxygen. The sealing cover ensures the airtightness of the device and prevents external oxygen from entering. The heat transfer plate and heating wire can provide stable heating conditions. In the oxygen-isolated vacuum environment, the reagent can achieve high-efficiency isolation of oxygen under low-cost conditions, which greatly improves production efficiency and reduces time and economic costs.

[0030] 2. In this utility model, the fan causes the gas containing harmful volatile components in the reaction vessel to flow into the recovery pipe in a directional manner, accelerating the gas flow and improving the recovery efficiency. The multiple condenser tubes in the mounting box increase the heat exchange area, which can quickly cool and liquefy the high-temperature harmful volatile components. The liquefied harmful components flow into the recovery cylinder along the recovery pipe, achieving efficient collection, preventing them from escaping into the environment and causing pollution, effectively controlling harmful volatile components, reducing safety risks, and protecting the environment and the health of operators. Attached Figure Description

[0031] Figure 1 This is a perspective view of a safety separation device for 3,3'-diaminobenzidine proposed in this utility model;

[0032] Figure 2 This is a front view of a safety separation device for 3,3'-diaminobenzidine proposed in this utility model;

[0033] Figure 3 This is a schematic diagram of the gas pipeline structure of a safety separation device for 3,3'-diaminobenzidine proposed in this utility model;

[0034] Figure 4 A split view of the reaction vessel of a safety separation device for 3,3'-diaminobenzidine proposed in this utility model;

[0035] Figure 5 This is an exploded view of the condensation and recovery mechanism of a safety separation device for 3,3'-diaminobenzidine proposed in this utility model.

[0036] Legend:

[0037] 1. Reactor; 2. Condensation recovery mechanism; 201. Recovery pipe; 202. Fan; 203. Mounting box; 204. Condensation pipe; 205. Vent cover; 206. Moisture-proof support base; 207. Recovery cylinder; 3. Sealing cover; 4. Vacuum pump; 5. Evacuation pipe; 6. Gas delivery pipe; 7. Feed inlet; 8. Placement box; 9. Heat transfer plate; 10. Heating wire; 11. Hole; 12. Handle; 13. Screw; 14. Glass tank; 15. Glass plate; 16. Power supply block; 17. Power indicator light; 18. Groove; 19. Storage box; 20. Rubber column; 21. Moisture-proof board; 22. Support leg; 23. Rubber base. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 3 and Figure 4An embodiment of this utility model provides a safe separation device for 3,3'-diaminobenzidine, comprising a reaction vessel 1, a sealing cover 3 fixedly connected to the top of the reaction vessel 1, a vacuum pump 4 fixedly connected to the left rear end of the top of the sealing cover 3, an exhaust pipe 5 fixedly connected to the output end of the vacuum pump 4, the bottom of the exhaust pipe 5 connected to the left front end of the top of the sealing cover 3, a gas supply pipe 6 connected to the right side of the top of the sealing cover 3, a feed inlet 7 provided on the front side of the top of the sealing cover 3, a placement box 8 slidably connected to the middle of the inner side of the reaction vessel 1, a hole 11 opened on the left side of the outer side of the reaction vessel 1, the outer side of the placement box 8 slidably connected to the inside of the hole 11, a heat transfer plate 9 fixedly connected to the lower middle part of the inner side of the reaction vessel 1, a plurality of heating wires 10 fixedly connected to the bottom of the heat transfer plate 9, and a condensation recovery mechanism 2 connected to the right side of the outer side of the reaction vessel 1.

[0040] Specifically, reactor 1 provides a stable spatial environment for the separation process, capable of withstanding internal pressure and temperature changes. The top sealing cap 3 is tightly connected to reactor 1 to form a sealed structure, effectively preventing the leakage of harmful volatiles generated during the separation of 3,3'-diaminobenzidine. The vacuum pump 4 and extraction pipe 5 on the sealing cap 3 can quickly remove air from the inside of reactor 1, rapidly reducing the internal pressure. The gas supply pipe 6 is responsible for injecting inert gas into reactor 1 to create a low-oxygen environment, preventing the oxidation of 3,3'-diaminobenzidine during the separation process and ensuring product quality. The feed inlet 7 facilitates material feeding, and the placement box 8 can be placed along the reaction path. The material slides within the hole 11 on the left side of the reactor 1, facilitating loading and unloading of materials, reducing direct contact between operators and 3,3'-diaminobenzidine, and lowering safety risks. The heat transfer plate 9 and multiple heating wires 10 in the lower middle part of the inner side of the reactor 1 constitute a heating assembly. The heat generated by the heating wires 10 is evenly conducted to the interior of the reactor 1 through the heat transfer plate 9, promoting the separation of materials at a suitable temperature, improving separation efficiency, and achieving low-cost, high-efficiency safe separation of 3,3'-diaminobenzidine, ensuring production safety and product quality. The outer right side of the reactor 1 is connected to a condensation recovery mechanism 2, which is used for cooling and collecting volatile components.

[0041] Reference Figure 1 , Figure 3 and Figure 5 The condensation recovery mechanism 2 includes a recovery pipe 201. The left side of the recovery pipe 201 is connected to the outside right side of the reactor 1. A fan 202 is fixedly connected to the inside left end of the recovery pipe 201. An installation box 203 is fixedly connected to the inside middle of the recovery pipe 201. Multiple condensation pipes 204 are fixedly connected inside the installation box 203. The right end of the recovery pipe 201 is connected to the top left side of the recovery cylinder 207. A moisture-proof support base 206 is fixedly connected to the bottom of the recovery cylinder 207. An air outlet cover 205 is provided on the top of the recovery cylinder 207.

[0042] Specifically, the recovery pipe 201 connects to the reactor 1 to form a recovery channel for harmful volatile components. The fan 202 inside the pipe continuously operates to generate directional airflow, which pushes the gas containing harmful volatile components discharged from the reactor 1 into the recovery pipe 201 quickly, effectively preventing harmful gases from accumulating around the device. The multiple condenser pipes 204 built into the mounting box 203 constitute a highly efficient heat exchange area. Through the circulation of cooling medium, the high-temperature harmful volatile components can be quickly cooled and liquefied. The liquefied substances flow along the recovery pipe 201 into the recovery cylinder 207 for centralized storage, preventing harmful components from escaping into the environment and reducing harm to operators and the surrounding environment. The moisture-proof support base 206 at the bottom of the recovery cylinder 207 prevents the recovered substances from deteriorating due to moisture and ensures storage stability. The vent cover 205 at the top maintains the internal pressure of the recovery cylinder 207 while preventing the leakage of harmful gases, effectively controlling harmful volatile components and achieving green and safe separation operations.

[0043] Reference Figure 1 , Figure 2 and Figure 3 A handle 12 is threadedly connected to the left side of the placement box 8, and screws 13 are threadedly connected to the front and rear sides of the handle 12. A glass tank 14 is opened on the front side of the outside of the reactor 1. A glass plate 15 is fixedly connected inside the glass tank 14. Two power blocks 16 are fixedly connected to the bottom left end of the front side of the outside of the reactor 1. Power indicator lights 17 are fixedly connected to the front side of both power blocks 16.

[0044] Specifically, the handle 12 of the placement box 8 is securely installed via a threaded connection, allowing operators to easily push and pull the placement box 8. This saves effort during material transfer and avoids direct contact with 3,3'-diaminobenzidine, improving operational safety. Screws 13 secure the handle 12 from the front and rear sides, further enhancing connection stability and preventing it from falling off during use. The glass tank 14 and glass plate 15 on the front of the reactor 1 form a visual observation window, allowing operators to observe the internal material separation at any time without frequently opening the sealing cover 3. This ensures a stable separation environment and allows for timely adjustment of process parameters. The two power blocks 16 and the front power indicator light 17 clearly display the energizing status of the heating wire 10, facilitating timely detection of equipment abnormalities and ensuring stable operation of the separation device.

[0045] Reference Figure 1 , Figure 2 and Figure 3 Rubber columns 20 are fixedly connected to the four corners of the bottom of the reactor 1. The bottom of the multiple rubber columns 20 is fixedly connected to the same moisture-proof board 21. The front side of the moisture-proof board 21 has a groove 18. A storage box 19 is slidably connected inside the groove 18. Support legs 22 are fixedly connected to the four corners of the bottom of the moisture-proof board 21. The bottom of the multiple support legs 22 is fixedly connected to a rubber base 23.

[0046] Specifically, the rubber pillars 20 and moisture-proof plates 21 at the four corners of the bottom of the reactor 1 effectively enhance the stability and practicality of the device. The rubber pillars 20 are soft and can play a shock-absorbing and buffering role, reducing the vibration generated by the reactor 1 during operation. The moisture-proof plates 21 not only prevent the bottom of the reactor 1 from getting damp, but the slots 18 on the front side, together with the storage box 19, can provide space for operators to store separation tools and protective equipment. The support legs 22 and rubber bases 23 at the bottom of the moisture-proof plates 21 further improve the support height and stability of the device. The rubber bases 23 increase the friction with the ground, prevent the device from sliding, and ensure that the separation operation is carried out safely and orderly.

[0047] Working principle: First, the material is fed into the placement box 8 through the feed inlet 7. Then, the sealing cover 3 is tightly connected to the reaction vessel 1 to form a closed space. Next, the vacuum pump 4 is started to quickly remove the air from the reaction vessel 1 through the air extraction pipe 5 to reduce the internal air pressure. After a certain vacuum degree is reached, the gas supply pipe 6 injects inert gas into the reaction vessel 1 to create a low-oxygen environment and prevent the oxidation of 3,3'-diaminobenzidine. The heat generated by the heating wire 10 is evenly conducted to the reaction vessel 1 through the heat transfer plate 9 to promote the separation of the material at a suitable temperature. After the separation is completed, the operator removes the placement box 8 through the handle 12 to complete the material collection.

[0048] Furthermore, during the separation process, the harmful volatile components generated enter the condensation and recovery mechanism 2 through the pipe on the right side of the reactor 1. The fan 202 in the recovery pipe 201 drives the gas flow, causing the gas to pass through the condenser pipe 204 in the mounting box 203. After being cooled and liquefied, the gas flows into the recovery cylinder 207 for collection. The top vent cover 205 balances the pressure and prevents gas leakage, while the moisture-proof support 206 ensures the stable storage of the substances in the recovery cylinder 207. While ensuring personnel safety and product quality, the efficient separation of 3,3'-diaminobenzidine is achieved.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safe separation device of 3,3'-diaminobenzidine, comprising a reaction kettle (1), characterized in that: The top of the reactor (1) is fixedly connected to a sealing cover (3). The top rear left end of the sealing cover (3) is fixedly connected to a vacuum pump (4). The output end of the vacuum pump (4) is fixedly connected to a suction pipe (5). The bottom of the suction pipe (5) is connected to the top front left end of the sealing cover (3). The top right side of the sealing cover (3) is connected to a gas supply pipe (6). The top front side of the sealing cover (3) is provided with a feed inlet (7). The inner middle part of the reactor (1) is slidably connected to a placement box (8). The outer left side of the reactor (1) is provided with a hole (11). The outer side of the placement box (8) is slidably connected to the inside of the hole (11). The inner lower middle part of the reactor (1) is fixedly connected to a heat transfer trough plate (9). The bottom of the heat transfer trough plate (9) is fixedly connected to multiple heating wires (10). The outer right side of the reactor (1) is connected to a condensation recovery mechanism (2).

2. A safety separation device for 3,3'-diaminobenzidine according to claim 1, characterized in that: The condensation recovery mechanism (2) includes a recovery pipe (201). The left side of the recovery pipe (201) is connected to the outside right side of the reactor (1). A fan (202) is fixedly connected to the left end of the inside of the recovery pipe (201). An installation box (203) is fixedly connected to the middle of the inside of the recovery pipe (201). Multiple condensation pipes (204) are fixedly connected inside the installation box (203). The right end of the recovery pipe (201) is connected to the top left side of the recovery cylinder (207). A moisture-proof support base (206) is fixedly connected to the bottom of the recovery cylinder (207). An air outlet cover (205) is provided on the top of the recovery cylinder (207).

3. A safe separation device of 3,3'-diaminobenzidine according to claim 1, characterized in that: The left side of the placement box (8) is threaded with a handle (12), and the front and rear sides of the handle (12) are threaded with screws (13).

4. The apparatus for safe separation of 3,3'-diaminobenzidine according to claim 1, characterized in that: A glass tank (14) is provided on the front side of the reactor (1), and a glass plate (15) is fixedly connected inside the glass tank (14).

5. A safe separation device of 3,3'-diaminobenzidine according to claim 1, characterized in that: Two power blocks (16) are fixedly connected to the bottom left end of the front side of the reactor (1), and power indicator lights (17) are fixedly connected to the front side of the two power blocks (16).

6. A safe separation device of 3,3'-diaminobenzidine according to claim 1, characterized in that: Rubber columns (20) are fixedly connected to the four corners of the bottom of the reactor (1), and the bottom of the multiple rubber columns (20) is fixedly connected to the same moisture-proof board (21).

7. A safe separation device of 3,3'-diaminobenzidine according to claim 6, characterized in that: The moisture-proof board (21) has a groove (18) on its front side, and a storage box (19) is slidably connected inside the groove (18).

8. A safe separation device of 3,3'-diaminobenzidine according to claim 7, characterized in that: The moisture-proof board (21) has four fixed legs (22) at the bottom corners, and the bottom of each of the legs (22) has a fixed rubber base (23).

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