Multistage tail gas absorption and anti-blocking reaction kettle for synthesis of pyridine intermediate

Abstract

This utility model relates to the field of reaction vessel technology, specifically to a multi-stage tail gas absorption and anti-clogging reaction vessel for the synthesis of pyridine intermediates. It includes a reaction vessel with a stirring shaft inserted inside. Multiple through-grooves in a ring structure are formed on the inner wall of the reaction vessel, and a filter membrane is disposed inside each through-grooves. It also includes a mounting plate fixedly installed inside the reaction vessel, and a movable component movably connected to the lower end of the reaction vessel, with multiple discharge grooves on the movable component. Through the mounting plate inside the reaction vessel, and the communication between the ring grooves and through-grooves within the mounting plate, effective exhaust gas discharge can be achieved. Furthermore, the rubber layer located on the upper side of the mounting plate and the movable component ensure stable discharge and guarantee synthesis efficiency.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessels, and in particular to a multi-stage tail gas absorption and anti-clogging reaction vessel for the synthesis of pyridine intermediates. Background Technology

[0002] In the production process of intermediates, a reaction vessel is required as a reaction container. Pyridine is a nitrogen-containing heterocyclic aromatic organic compound. In the actual production process, the raw materials in the reaction vessel will accumulate together, which will affect the efficiency of the synthesis reaction. At the same time, the discharge port located at the bottom of the reaction vessel will also be blocked due to the accumulation of raw materials, which makes it inconvenient to centrally treat the waste and affects the synthesis efficiency. In view of this, we designed a multi-stage tail gas absorption and anti-blocking reaction vessel for the synthesis of pyridine intermediates. Summary of the Invention

[0003] To address the aforementioned shortcomings of existing technologies, this invention provides a multi-stage tail gas absorption and anti-clogging reactor for the synthesis of pyridine intermediates. This effectively solves the problems of raw materials accumulating in existing reactors, which affects the efficiency of the synthesis reaction. Additionally, the discharge port located at the bottom of the reactor can become clogged due to the accumulation of raw materials, making it difficult to centrally process waste and further impacting synthesis efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A multi-stage tail gas absorption and anti-clogging reactor for the synthesis of pyridine intermediates includes a reaction vessel, a stirring shaft inserted inside the reaction vessel, and multiple through grooves in a ring structure on the inner wall of the reaction vessel, with a filter membrane disposed inside the through grooves.

[0006] It also includes a mounting plate that is fixedly installed inside the reaction vessel, and a movable component that is movably connected to the lower end of the reaction vessel, the movable component having multiple discharge slots.

[0007] Preferably, the reaction vessel has a reaction tank inside and also includes an annular member fixedly sleeved on the outer wall of the reaction vessel, with a through groove formed between the annular member and the outer wall of the reaction vessel, and the outer wall of the mounting plate is fixedly connected to the inner wall of the reaction tank.

[0008] Preferably, it also includes a sealing plate detachably connected to the top surface of the reaction vessel, the sealing plate having an installation groove in the middle, a sealing sleeve fixedly installed on the outer wall of the stirring shaft, the outer wall of the sealing sleeve being connected and fixed to the inner wall of the installation groove, and the outer wall of the stirring shaft being rotatably connected to the sealing sleeve.

[0009] Preferably, it also includes an annular groove formed inside the mounting plate, the annular groove being in communication with the upper end of the connecting pipe, and the upper end of the annular groove being a rubber layer.

[0010] Preferably, a vertical groove is provided in the middle of the mounting plate, the outer wall of the movable part slides in fit with the inner wall of the vertical groove, and the lower outer wall of the movable part is fixedly connected to the output shaft of an external hydraulic cylinder through a connecting shaft.

[0011] Preferably, a through hole is provided on one side of the outer wall of the annular groove, and an air outlet pipe is connected to one side of the through hole, and a pump body is provided on the air outlet pipe.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention utilizes an installation plate installed inside the reaction vessel, along with the connection between the annular groove and the through groove within the installation plate, to effectively discharge exhaust gas. Furthermore, during this process, a rubber layer and movable parts located on the upper side of the installation plate enable stable unloading, ensuring synthesis efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of the reactor of the present invention;

[0016] Figure 2 This is a schematic diagram of the overall front view of the reactor of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the reactor of the present invention;

[0018] Figure 4 This is a schematic diagram of the overall exploded structure of the reactor of the present invention.

[0019] Drawing number explanation:

[0020] 100. Reaction vessel; 101. Reaction tank; 102. Through-slot; 110. Annular component; 120. Connecting pipe; 130. Filter membrane;

[0021] 200. Sealing plate; 210. Stirring shaft; 220. Sealing sleeve;

[0022] 300. Mounting plate; 301. Vertical groove; 302. Annular groove; 310. Air outlet pipe;

[0023] 400. Moving parts; 401. Unloading chute. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0026] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this invention and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this invention.

[0027] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number. Example

[0028] See attached document Figure 1-4 As shown, a multi-stage tail gas absorption and anti-clogging reactor for the synthesis of pyridine intermediates includes a reaction vessel 100, a stirring shaft 210 inserted inside the reaction vessel 100, a mounting plate 300 fixedly installed inside the reaction vessel 100, and a movable component 400 movably connected to the lower end of the reaction vessel 100. The movable component 400 has multiple discharge channels 401. In the actual synthesis process, the stirring shaft 210 can rotate relative to the reaction vessel 100. It should be noted that in this application, the raw materials inside the reaction vessel 100 are all located above the mounting plate 300. The stirring shaft 210 enables thorough mixing and reaction of the raw materials, achieving the synthesis of pyridine intermediates. Specifically, when the synthesis reaction progresses to a certain extent, the raw materials in the reaction vessel 100 need to be processed. In this application, the movable component 400, through its vertical position adjustment combined with the discharge channels 401 on the movable component 400, effectively prevents the raw materials from clogging.

[0029] Furthermore, in this application, the inner wall of the reaction vessel 100 is provided with a plurality of through grooves 102 in a ring-shaped structure, and a filter membrane 130 is disposed inside the through grooves 102; the reaction vessel 100 is provided with a reaction groove 101 inside, and also includes an annular member 110 fixedly sleeved on the outer wall of the reaction vessel 100, forming a through groove 102 between the annular member 110 and the outer wall of the reaction vessel 100. In the actual reaction synthesis process, gas is generated in the reaction vessel 100 and moves towards the upper part of the reaction vessel 100. In this process, the through grooves 102 opened on the upper side of the reaction groove 101 and the filter membrane 130 disposed at the through grooves 102 can ensure the normal overflow of gas, but prevent the raw materials from overflowing from the through grooves 102. The through grooves 102 ensure that the tail gas generated during the synthesis process can be discharged normally.

[0030] Specifically, during the synthesis reaction, to ensure that the stirring shaft 210 can fully stir various raw materials and guarantee the efficient progress of the synthesis reaction, this application also includes a sealing plate 200 detachably connected to the top surface of the reaction vessel 100. The sealing plate 200 has an installation groove in its middle. A sealing sleeve 220 is fixedly installed on the outer wall of the stirring shaft 210, and the outer wall of the sealing sleeve 220 is connected and fixed to the inner wall of the installation groove. The outer wall of the stirring shaft 210 and the sealing sleeve 220 are rotatably connected. Specifically, the stirring shaft 210 is fixedly connected to the output shaft of an external servo motor, which can drive the stirring shaft 210 to rotate stably. A stirring blade is fixedly installed at the lower end of the stirring shaft 210, allowing the stirring blade to fully contact various raw materials and ensure thorough mixing between them.

[0031] It should be noted that, in order to ensure that the fully reacted raw materials can be discharged normally from the lower part of the reaction tank 100, in this application, the outer wall of the mounting plate 300 is fixedly connected to the inner wall of the reaction tank 101, and an annular groove 302 is also provided inside the mounting plate 300. The annular groove 302 is connected to the upper end of the connecting pipe 120, and the upper end of the annular groove 302 is set as a rubber layer. Combined with the connection between the through groove 102 and the annular groove 302 through the connecting pipe 120, the exhaust gas generated during the synthesis reaction can enter the interior of the annular groove 302. In this process, the rubber layer set on the upper part of the annular groove 302 expands upward. In this process, the fully reacted raw materials that were originally spread flat on the upper part of the rubber layer will be concentrated in the vertical groove 301 in the middle position to facilitate subsequent unloading.

[0032] Furthermore, a through hole is provided on one side of the outer wall of the annular groove 302, and a control valve is provided in the vent pipe 310. The vent pipe 310 is connected to one side of the through hole, and a pump body is provided on the vent pipe 310. When the rubber layer is in an expanded state and the raw material is gathered to the center, the air pressure in the corresponding annular groove 302 is relatively large. By opening the control valve, the exhaust gas can be discharged normally from the vent pipe 310.

[0033] In this application, to ensure stable unloading of the reacted raw materials, a vertical groove 301 is provided in the middle of the mounting plate 300. The outer wall of the movable part 400 slides in conjunction with the inner wall of the vertical groove 301, and the lower outer wall of the movable part 400 is fixedly connected to the output shaft of an external hydraulic cylinder via a connecting shaft. By adjusting the height of the movable part 400 in the vertical direction, the unloading groove 401 on the outer wall of the movable part 400 can be intermittently exposed inside the reaction tank 101. When the unloading groove 401 is exposed inside the reaction tank 101, the reacted raw materials will enter the interior of the unloading groove 401. When the movable part 400 moves downward, the corresponding reacted raw materials can be taken out from the reaction tank 100, thereby completing the unloading, effectively preventing blockage, and ensuring the full synthesis of the remaining raw materials in the reaction tank 100.

[0034] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from the stated principles.

Claims

1. A multi-stage tail gas absorption and anti-blocking reaction kettle for synthesis of pyridine intermediates, characterized in that, include: A reaction vessel (100) is provided with a stirring shaft (210) inserted inside the reaction vessel (100). Multiple through grooves (102) are provided in a ring structure on the inner wall of the reaction vessel (100). A filter membrane (130) is provided inside the through grooves (102). It also includes a mounting plate (300) fixedly installed inside the reaction vessel (100), and a movable part (400) movably connected to the lower end of the reaction vessel (100), the movable part (400) having a plurality of discharge slots (401).

2. The multi-stage tail gas absorption and anti-blocking reaction kettle for synthesizing pyridine intermediates according to claim 1, characterized in that: The reaction vessel (100) has a reaction tank (101) inside and also includes an annular member (110) fixedly sleeved on the outer wall of the reaction vessel (100). A through groove (102) is formed between the annular member (110) and the outer wall of the reaction vessel (100). The outer wall of the mounting plate (300) is fixedly connected to the inner wall of the reaction tank (101).

3. The multi-stage tail gas absorption and anti-blocking reaction kettle for synthesizing pyridine intermediates according to claim 2, characterized in that: It also includes a sealing plate (200) that is detachably connected to the top surface of the reaction vessel (100). The sealing plate (200) has an installation groove in the middle. A sealing sleeve (220) is fixedly installed on the outer wall of the stirring shaft (210). The outer wall of the sealing sleeve (220) is connected and fixed to the inner wall of the installation groove. The outer wall of the stirring shaft (210) and the sealing sleeve (220) are rotatably connected.

4. The multi-stage tail gas absorption and anti-blocking reaction kettle for synthesizing pyridine intermediates according to claim 3, characterized in that: It also includes an annular groove (302) formed inside the mounting plate (300), the annular groove (302) being in communication with the upper end of the connecting pipe (120), and the upper end of the annular groove (302) being a rubber layer.

5. The multi-stage tail gas absorption and anti-blocking reaction kettle for synthesizing pyridine intermediates according to claim 4, characterized in that: The mounting plate (300) has a vertical groove (301) in the middle. The outer wall of the movable part (400) slides with the inner wall of the vertical groove (301). The lower outer wall of the movable part (400) is fixedly connected to the output shaft of the external hydraulic cylinder through a connecting shaft.

6. The multi-stage tail gas absorption and anti-blocking reaction kettle for synthesizing pyridine intermediates according to claim 5, characterized in that: A through hole is provided on one side of the outer wall of the annular groove (302), and an air outlet pipe (310) is connected to one side of the through hole. A pump body is provided on the air outlet pipe (310).

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