A reaction kettle nitrogen seal closed feeding device

Abstract

The utility model discloses a kind of nitrogen seal closed feeding devices of reaction kettle, it is connected with the feed inlet of reaction kettle, device includes closed cavity, the top of closed cavity is equipped with nitrogen filling interface, tail gas interface and oxygen detection interface, and nitrogen filling valve is installed at nitrogen filling interface, tail gas valve is installed at tail gas interface, oxygen content detector is installed at oxygen detection interface, nitrogen filling valve is connected with nitrogen source by pipeline, tail gas valve is connected with tail gas treatment system by pipeline;The bottom of closed cavity is equipped with discharging interface, discharging valve is installed at discharging interface, and discharging valve and the feed inlet of reaction kettle form detachable seal connection;At least one pair of operating gloves is embedded in the side wall of closed cavity in airtight manner, and openable and closable side transfer door is equipped on the other side wall.The utility model uses direct connection between the closed cavity of feeding and reaction kettle, reduces manual intervention, avoids human contact, completely eliminates dust dispersion, and feeding efficiency is improved by more than 50%.

Description

Technical Field

[0001] This utility model relates to the field of synthetic chemical production technology, specifically to a nitrogen-sealed closed feeding device for a reaction vessel. Background Technology

[0002] In chemical production, many hazardous chemicals are averse to oxygen and water, easily generate dust, have irritating odors, and are harmful to human health. In actual production operations, they must be placed in reaction vessels and handled in a closed system, with strict prevention of oxygen and water intrusion throughout the entire process to ensure safe production. Summary of the Invention

[0003] To effectively prevent hazardous chemicals from being exposed to air and thus avoid safety accidents, this utility model provides a nitrogen-sealed feeding device for a reaction vessel. It employs a specially designed nitrogen-sealing system and nitrogen gas to isolate hazardous chemicals, ensuring safe nitrogen sealing throughout the feeding process.

[0004] The technical solution adopted is as follows: A nitrogen-sealed closed-loop feeding device for a reactor is connected to the reactor's inlet. The device includes a sealed cavity. The top of the sealed cavity is provided with a nitrogen filling port, a tail gas port, and an oxygen detection port. A nitrogen filling valve is installed at the nitrogen filling port, a tail gas valve is installed at the tail gas port, and an oxygen content detector is installed at the oxygen detection port. The nitrogen filling valve is connected to a nitrogen source via a pipeline, and the tail gas valve is connected to a tail gas treatment system via a pipeline. The bottom of the sealed cavity is provided with a discharge port, and a discharge valve is installed at the discharge port. The discharge valve forms a detachable sealed connection with the reactor's inlet. At least one pair of operating gloves are airtightly embedded in one side wall of the sealed cavity, and an openable and closable side transfer door is provided on the other side wall.

[0005] Furthermore, the oxygen content detector is linked with the nitrogen filling valve and the exhaust gas valve for control. When the oxygen content detector detects that the oxygen concentration exceeds a preset threshold, it automatically triggers the nitrogen filling valve and the exhaust gas valve to open simultaneously for nitrogen replacement.

[0006] Preferably, the side transfer door has a double-layer airtight structure, and a nitrogen buffer chamber is provided between the inner and outer layers of the side transfer door.

[0007] Furthermore, a pressure gauge is provided at the top of the sealed cavity for detecting the internal pressure of the sealed cavity. When the pressure gauge reading exceeds a set threshold, the pressure can be released by opening the exhaust valve.

[0008] Furthermore, the top of the sealed cavity is provided with a cleaning port, a cleaning valve is installed at the cleaning port, and a cleaning gun connected to the outlet of the cleaning valve is provided inside the sealed cavity. The spray direction of the cleaning gun can cover the inner wall of the sealed cavity.

[0009] Preferably, the cleaning gun is connected to the cleaning valve via a pressure-resistant stainless steel hose.

[0010] Furthermore, load-bearing operating platforms are fixedly installed on both sides of the lower part of the sealed cavity, and the surface of the operating platforms is provided with anti-slip texture.

[0011] Preferably, the upper and lower ends of the discharge valve are connected to the discharge interface and the feed inlet of the reactor respectively via flanges, and the sealing surface of the flanges is made of polytetrafluoroethylene-coated gaskets.

[0012] The technical solution of this utility model has the following advantages: A. This utility model adopts a direct connection between the sealed feeding chamber and the reactor, and controls the entry of hazardous materials into the reactor through the feeding valve, reducing manual intervention, avoiding direct contact with people, realizing fully enclosed feeding, completely eliminating dust emission, and improving feeding efficiency by more than 50%.

[0013] B. This utility model adopts an automatic linkage between an oxygen content detector and a nitrogen filling valve to achieve closed-loop control, which has a faster response speed, avoids the safety risks caused by human operation delays, realizes dynamic oxygen concentration regulation, requires no manual intervention, and is safer.

[0014] C. This utility model is equipped with a cleaning system in a sealed cavity. The operator holds the cleaning gun in the sealed cavity with operating gloves, and after opening the cleaning valve, quickly cleans the inner wall of the sealed cavity. The spray angle of the cleaning gun can cover the entire inner wall of the sealed cavity, and remove the hazardous materials stuck on the inner wall in time, which is more efficient and safer.

[0015] D. This utility model provides operating gloves and side transfer doors on both sides of the sealed cavity, and the side transfer doors are preferably double-layer airtight structures. The sealed cavity adopts a double-layer airtight transfer door and nitrogen buffer chamber structure, which double isolates oxygen. When opening and closing the door, nitrogen buffer is used to isolate air, resulting in a higher sealing level, which is suitable for sensitive materials. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model, the drawings used in the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure provided by this utility model; Figure 2 yes Figure 1The side view shown is shown.

[0018] The markings in the image are as follows: 1-Reaction vessel 11-Inlet 2-Sealed cavity 21-Nitrogen charging port, 22-Exhaust gas port, 23-Oxygen detection port, 24-Discharge port 25-Cleaning Interface 3-Nitrogen purging valve; 4-Exhaust gas valve; 5-Oxygen content detector; 6-Discharge valve 7-Operating gloves; 8-Side transfer door; 9-Pressure gauge; 10-Cleaning valve 20 - Cleaning gun; 30 - Operating platform; 40 - Flange. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] like Figure 1 and Figure 2 As shown, this utility model provides a nitrogen-sealed feeding device for a reactor, which is connected to the feed inlet 11 of the reactor 1. The device includes a sealed cavity 2, and the top of the sealed cavity 2 is provided with a nitrogen filling port 21, a tail gas port 22, and an oxygen detection port 23. A nitrogen filling valve 3, preferably a one-way butterfly valve, is installed at the nitrogen filling port 21, a tail gas valve 4 is installed at the tail gas port 22, and an oxygen content detector 5 for monitoring the oxygen content inside the cavity is installed at the oxygen detection port 23. The nitrogen filling valve 3 is connected to a nitrogen source (not shown in the figure) through a pipeline, and the tail gas valve... Door 4 is connected to the exhaust gas treatment system (not shown in the figure) through a pipeline; a discharge port 24 is provided at the bottom of the sealed cavity 2, and a discharge valve 6 is installed at the discharge port 24. The discharge valve 6 forms a detachable sealed connection with the feed inlet 11 of the reactor 1; at least one pair of operating gloves 7 are embedded in one side wall of the sealed cavity 2 in an airtight manner, and an openable and closable side transfer door 8 is provided on the other side wall. The side transfer door 8 is preferably a double-layer airtight structure. A nitrogen buffer chamber is provided between the inner and outer doors of the side transfer door 8, which can achieve the purpose of double isolation of oxygen.

[0021] In a preferred embodiment of this invention, the oxygen content detector 5 is linked with the nitrogen filling valve 3 and the exhaust valve 4 for coordinated control. The oxygen content detector 5 is a commercially available product. When the oxygen content detector 5 detects that the oxygen concentration exceeds a preset threshold, it automatically triggers the simultaneous opening of the nitrogen filling valve 3 and the exhaust valve 4 for nitrogen replacement. By adopting automatic linkage between the oxygen content detector 5 and the nitrogen filling valve 3, closed-loop control is achieved, resulting in faster response and avoiding safety risks caused by delays in human operation.

[0022] Meanwhile, the present invention also provides a pressure gauge 9 at the top of the sealed cavity 2 for detecting the internal pressure of the cavity, so as to detect the gas pressure inside the cavity in real time. When the detected value is high, the pressure can be released by triggering the exhaust valve 4.

[0023] To facilitate cleaning of the inner wall of the sealed cavity 2, as a further preferred embodiment of this invention, a cleaning interface 25 is provided at the top of the sealed cavity 2, and a cleaning valve 10 is installed at the cleaning interface 25. A cleaning gun 20 connected to the cleaning valve 10 is provided inside the sealed cavity 2. The cleaning gun 20 can be held by the operator's gloves 7 and aimed at any position inside the sealed cavity 2 for rinsing. The spray direction can cover the inner wall of the sealed cavity 2. The cleaning fluid is connected to the cleaning valve 10 through a pipeline. By controlling the cleaning valve 10, the entry of the cleaning fluid can be controlled to achieve the purpose of rapid cleaning of the inner wall of the cavity. The preferred cleaning gun 20 of this invention is a cleaning gun made of ordinary pressure-resistant stainless steel, which is connected to the cleaning valve 10 through a pressure-resistant stainless steel hose.

[0024] like Figure 2 As shown, load-bearing operating platforms 30 are also fixedly installed on the ground below both sides of the sealed cavity 2. The surface of the operating platform 30 is provided with anti-slip texture, which has a good anti-slip effect, allowing operators to stand on the operating platform, making it easier to operate and avoiding material blockage and operational risks.

[0025] In this utility model, the upper and lower ends of the discharge valve 6 are connected to the discharge interface 24 and the feed inlet 11 of the reactor 1 respectively through flanges 40. The connection sealing surface of the flange 40 is covered with a polytetrafluoroethylene gasket to achieve better interface sealing.

[0026] The specific operation involves the following steps: (1) Connect the discharge port 24 of the sealed cavity 2 to the discharge valve 6 through the flange 40. The discharge valve 6 is connected to the reactor 1 through the flange 40 and the device is fixed. (2) Open the side transfer door 8 and put the unopened hazardous chemical materials into the platform inside the sealed cavity 2; (3) Close the side transfer door 8, connect the nitrogen filling valve 3 to the nitrogen system, connect the tail gas valve 4 to the tail gas system, open the nitrogen filling valve 3 to introduce nitrogen, and open the tail gas valve 4 to perform nitrogen replacement. Check the pressure gauge 9 and oxygen content detector 5 according to the production process requirements. (4) When the display parameters of pressure gauge 9 and oxygen content detector 5 reach the range required for safe operation of production process, nitrogen is continuously introduced to ensure the nitrogen sealing state inside the device. The operator stands on the operating platform 30 and uses operating gloves 7 to unpack and inspect the hazardous chemical materials in the sealed cavity 2. (5) After the inspection of the hazardous chemical materials is completed and confirmed to be correct and usable, observe whether the parameters displayed by the pressure gauge 9 and the oxygen content detector 5 are normal. After confirming that they are normal, open the discharge valve 6 and put the hazardous chemical materials into the reaction vessel 1 through the discharge valve 6. (6) After feeding is completed, open the cleaning valve 10 connected to the cleaning solvent inlet, pick up the cleaning gun 20 with the operating gloves, rinse the inside of the sealed cavity 2, and rinse the surrounding contaminated material into the reactor 1. (7) After rinsing, close the cleaning valve 10, put away the cleaning gun 20, close the feeding valve 6, close the nitrogen charging valve 3, close the exhaust gas valve 4, and the operation is over.

[0027] This invention optimizes the reactor feeding process, effectively preventing hazardous chemicals from being exposed to air and causing risks. It employs a specially designed nitrogen-sealed feeding device, which contains the hazardous chemicals and is filled with nitrogen for isolation, ensuring safe nitrogen sealing throughout the feeding process and completely avoiding safety accidents. Furthermore, this invention is compatible with various equipment and has wide applications, ensuring both safety and improved operational convenience.

[0028] Any aspects not covered in this utility model are applicable to the prior art.

[0029] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A nitrogen-sealed feeding device for a reactor, which is connected to the feed inlet (11) of a reactor (1), characterized in that, The device includes a sealed cavity (2), the top of which is provided with a nitrogen filling port (21), a tail gas port (22) and an oxygen detection port (23), and a nitrogen filling valve (3) is installed at the nitrogen filling port (21), a tail gas valve (4) is installed at the tail gas port (22), and an oxygen content detector (5) is installed at the oxygen detection port (23). The nitrogen filling valve (3) is connected to a nitrogen source through a pipeline, and the tail gas valve (4) is connected to a tail gas treatment system through a pipeline. The bottom of the sealed cavity (2) is provided with a discharge port (24), and a discharge valve (6) is installed at the discharge port (24). The discharge valve (6) forms a detachable sealed connection with the feed inlet (11) of the reactor (1). At least one pair of operating gloves (7) are embedded in one side wall of the sealed cavity (2) in an airtight manner, and an openable and closable side transfer door (8) is provided on the other side wall. The oxygen content detector (5) forms a linkage control with the nitrogen filling valve (3) and the exhaust gas valve (4). When the oxygen content detector (5) detects that the oxygen concentration exceeds the preset threshold, it automatically triggers the nitrogen filling valve (3) and the exhaust gas valve (4) to open simultaneously for nitrogen replacement. The top of the sealed cavity (2) is also provided with a cleaning interface (25), a cleaning valve (10) is installed at the cleaning interface (25), and a cleaning gun (20) connected to the outlet of the cleaning valve (10) is provided inside the sealed cavity (2). The spray direction of the cleaning gun (20) can cover the inner wall of the sealed cavity (2).

2. The nitrogen-sealed feeding device for a reaction vessel according to claim 1, characterized in that, The side transfer door (8) is a double-layer airtight structure, and a nitrogen buffer chamber is provided between the inner and outer layers of the side transfer door (8).

3. The nitrogen-sealed feeding device for a reactor according to claim 1, characterized in that, The top of the sealed cavity (2) is also provided with a pressure gauge (9) for detecting the internal pressure of the sealed cavity (2).

4. The nitrogen-sealed feeding device for a reaction vessel according to claim 1, characterized in that, The cleaning gun (20) is connected to the cleaning valve 10 via a pressure-resistant stainless steel hose.

5. The nitrogen-sealed feeding device for a reactor according to any one of claims 1-4, characterized in that, The sealed cavity (2) is fixedly installed on both sides of the lower part of the cavity, and the operating platform (30) is provided with anti-slip texture.

6. The nitrogen-sealed feeding device for a reaction vessel according to claim 4, characterized in that, The upper and lower ends of the discharge valve (6) are connected to the discharge interface (24) and the feed inlet (11) of the reactor (1) respectively via flanges (40), and the connection sealing surface of the flange (40) is covered with a polytetrafluoroethylene gasket.

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