A reaction kettle device capable of effectively improving production efficiency of triethylaluminum

Abstract

The utility model provides a kind of effectively improve reaction kettle device of triethylaluminium production efficiency, it solves the problems, such as aluminium powder reaction rate reduction and stirring system abrasion, it includes reaction kettle main part, reaction kettle main part inside rotation is installed with the stirring shaft extending along axial direction, fixed sleeve is installed between the stirring shaft lower end and reaction kettle main part, stirring disc connected with stirring shaft is rotationally installed at the bottom of reaction kettle main part, stirring blade is installed on stirring disc and adjusting assembly is arranged between stirring blade and stirring disc, high-pressure circulating pump is connected to the bottom and top of reaction kettle main part by circulation pipe.The utility model has the advantages of good reaction effect, stable structure and the like.

Description

Technical Field

[0001] This utility model belongs to the field of reaction equipment technology, specifically relating to a reaction vessel device that effectively improves the production efficiency of triethylaluminum. Background Technology

[0002] Triethylaluminum (TEAL) is an important organoaluminum compound widely used in chemical and catalytic fields. The hydrogenation reaction in its production is the core step of the entire process. During hydrogenation, aluminum powder, triethylaluminum, and hydrogen react in a three-phase reaction to produce diethylaluminum hydride. Since this is a multiphase reaction system, good stirring efficiency is crucial to ensure uniform mixing between different phases, improve the contact opportunities and mass transfer efficiency of reactants, and thus promote the complete reaction. Therefore, in the actual production process of triethylaluminum, to prevent the agitator from shifting and vibrating during high-speed operation, a bushing is used to fix the agitator shaft at the bottom. However, this structure also presents some challenges. First, the design of the reactor's stirring structure causes aluminum powder to form a dead volume inside the reactor, hindering the complete reaction and reducing production efficiency. These incompletely reacted aluminum powders deposit in certain areas of the equipment, especially near the bushing, accelerating the wear of internal bearings and increasing equipment maintenance costs and downtime. Furthermore, under certain conditions, increased aluminum powder particle size can cause serious damage to the stirring device, increasing the operational risk of the reactor.

[0003] To address the shortcomings of existing technologies, people have conducted long-term explorations and proposed various solutions. For example, Chinese patent literature discloses a stirred reaction vessel [202410974247.7], which places different materials in a first reaction chamber and a second reaction chamber respectively. Driven by a driving component, the first and second reaction chambers rotate independently. Since a first stirring component is installed in the first reaction chamber and a second stirring component is installed in the second reaction chamber, the first and second stirring components complete the stirring of the materials as the first and second reaction chambers rotate, while the surrounding plate can slide along the bottom plate.

[0004] The above solution has solved the problem of the stirring system shifting and shaking to some extent, but it still has many shortcomings, such as aluminum powder deposition affecting the reaction rate and the stirring system being prone to wear. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a reactor device that can reduce the risk of wear in the stirring system and prevent material deposition, thereby effectively improving the production efficiency of triethylaluminum.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a reactor device for effectively improving the production efficiency of triethylaluminum, comprising a reactor body, an axially extending stirring shaft rotatably mounted inside the reactor body, a fixed sleeve installed between the lower end of the stirring shaft and the reactor body, a stirring disc rotatably mounted at the bottom of the reactor body and connected to the stirring shaft, stirring blades mounted on the stirring disc, and an adjustment component provided between the stirring blades and the stirring disc, and a high-pressure circulating pump connected to the bottom and top of the reactor body via a circulation pipe. The high-pressure circulating pump and circulation pipe circulate aluminum powder from areas that cannot be reached by stirring into the top of the reactor body to continue participating in the reaction, thereby improving the aluminum powder reaction rate and solving the problems of uneven reaction caused by material deposition and blockage of the stirring structure. The high-pressure circulating pump is installed at the bottom of the reactor body, with the pump inlet connected to the bottom of the reactor body and the outlet connected to the upper part of the reactor body. The pump circulates into the reactor, transporting the aluminum powder that has not participated in the reaction at the bottom to the top to continue participating in the reaction.

[0007] In the above-mentioned reactor device for effectively improving the production efficiency of triethylaluminum, the stirring plate includes a stirring seat connected to the stirring shaft, the stirring seat is rotatably connected to the fixed sleeve, the stirring seat is connected to the main plate body, and the main plate body has several fan-shaped stirring ports that match the stirring blades, and the stirring blades are rotatably installed in the stirring ports.

[0008] In the above-mentioned reactor device for effectively improving the production efficiency of triethylaluminum, the regulating component includes an regulating hole arranged inside the stirring port and located in the radial direction of the main plate, the stirring blade has an regulating shaft rotatably connected to the regulating hole, and an elastic reset component is installed between the regulating shaft and the regulating hole.

[0009] In the above-mentioned reactor device for effectively improving the production efficiency of triethylaluminum, guide plates perpendicular to the edge of the stirring blade are provided, and the guide plates on both sides of the stirring blade face opposite directions.

[0010] In the aforementioned reactor device for effectively improving the production efficiency of triethylaluminum, several stirring rods are installed along the axial direction of the stirring shaft.

[0011] In the aforementioned reactor apparatus for effectively improving the production efficiency of triethylaluminum, the reactor body includes an inner shell and an outer shell, with an insulation jacket between the inner and outer shells. A cooling coil is installed inside the reactor body, and a pressure-bearing structure is installed on the outer side of the reactor body. The insulation jacket can be heated using hot oil, and the cooling coil inside the reactor body is used for cooling.

[0012] In the above-mentioned reactor device for effectively improving the production efficiency of triethylaluminum, the pressure-bearing structure includes several support plates arranged in the middle of the outer side of the reactor body and facing both ends. The support plates are in the shape of a ring, and the outer diameter of each support plate decreases from the middle to both ends.

[0013] In the above-mentioned reactor device for effectively improving the production efficiency of triethylaluminum, the upper end of the reactor body has a feed inlet and the lower end of the reactor body has a discharge outlet. The feed inlet and the discharge outlet are respectively equipped with flanges. The feed inlet is equipped with a bottom insertion pipe that is inserted below the liquid surface.

[0014] In the aforementioned reactor apparatus for effectively improving the production efficiency of triethylaluminum, the reactor body has built-in temperature and pressure sensors. Pressure relief ports are located on the sides and top of the reactor body. The reactor body is typically equipped with rupture discs and vent valves to further enhance reaction safety. In addition, the reactor body is connected to a semi-inserted pipe, a fully inserted pipe, a hydrogen inlet pipe, and an ethylene inlet pipe.

[0015] In the aforementioned reactor device for effectively improving the production efficiency of triethylaluminum, the circulation pipe is equipped with a flow meter and a pressure sensor.

[0016] Compared with existing technologies, the advantages of this invention are as follows: the high-pressure circulating pump and circulating pipe realize the circulating transport of materials such as aluminum powder, and the stirring blades on the stirring plate prevent the bottom material from settling. Aluminum powder in areas that cannot be stirred is circulated into the top of the reactor to continue to participate in the reaction, thereby improving the reaction rate of materials such as aluminum powder; the stirring plate assists the stirring shaft in disturbing the internal materials, which effectively reduces the solid content, extends the service life of the reactor, and reduces the frequency of stirring maintenance; the main body of the reactor adopts a reinforced structure, and the high-temperature and high-pressure circulating pump can meet the requirements of high-pressure and high-temperature reaction processes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the main body of the reaction vessel of this utility model;

[0019] Figure 3 This is a cross-sectional view of the main body of the reaction vessel of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of this utility model;

[0021] Figure 5 This is a structural cross-sectional view of the present invention;

[0022] In the figure, the reactor body 1, inner shell 11, outer shell 12, insulation jacket 13, support plate 14, feed inlet 15, discharge outlet 16, flange 17, pressure relief port 18, cooling coil 19, stirring shaft 2, stirring rod 21, bottom insertion pipe 22, fixing sleeve 3, stirring plate 4, stirring seat 41, main plate body 42, stirring port 43, stirring blade 5, guide plate 51, adjusting component 6, adjusting hole 61, adjusting shaft 62, circulation pipe 7, and high-pressure circulation pump 71. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1-5 As shown, a reactor device for effectively improving the production efficiency of triethylaluminum includes a reactor body 1 made of stainless steel. An axially extending stirring shaft 2 is rotatably mounted inside the reactor body 1. A fixing sleeve 3 is installed between the lower end of the stirring shaft 2 and the reactor body 1. The upper end of the stirring shaft 2 is connected to an external drive structure. The fixing sleeve 3 at the lower end prevents the stirring shaft 2 from shifting its axis during prolonged operation. To prevent aluminum powder and other materials from accumulating at the bottom of the reactor body 1 and causing uneven reaction, a stirring disc 4 connected to the stirring shaft 2 is rotatably mounted at the bottom of the reactor body 1. Stirring blades 5 are mounted on the stirring disc 4, and an adjustment component 6 is provided between the stirring blades 5 and the stirring disc 4. When the stirring shaft 2 rotates, it drives the stirring disc 4 to rotate synchronously. The stirring blades 5 are rotated by the adjustment component 6 to guide the aluminum powder at the bottom to rise and prevent deposition. The bottom and top of the reactor body 1 are connected to a high-pressure circulation pump 71 capable of withstanding high temperature and pressure via a circulation pipe 7. The circulation pipe 7 drives the material back into the top of the reactor body 1, thereby further improving the reaction rate of the aluminum powder. The high-pressure circulating pump 71 is located at the bottom of the reactor body 1. The pump inlet is connected to the bottom and the outlet is connected to the upper part of the reactor body 1. Aluminum powder is circulated into the reactor. Through the circulation of the pump, the aluminum powder that has not participated in the reaction at the bottom is transported to the top to continue to participate in the reaction, thus avoiding the aluminum powder from depositing and invading the fixed sleeve 3 and causing wear on internal bearings and other components.

[0025] Specifically, unlike conventional stirring systems, in this embodiment, the stirring plate 4 includes a stirring seat 41 connected to the stirring shaft 2. The stirring seat 41 is rotatably connected to the fixed sleeve 3, and the stirring seat 41 is connected to a main plate body 42. The main plate body 42 has several fan-shaped stirring ports 43 that engage with the stirring blades 5. The stirring blades 5 are rotatably installed inside the stirring ports 43. In a static state, the stirring blades 5 close the stirring ports 43, and the material settles on the upper end of the main plate body 42. The rotation of the stirring shaft 2 disturbs the material, thereby meeting the requirements for continuous reaction of the internal material.

[0026] Specifically, the regulating component 6 employs an automatic regulating structure, including an regulating hole 61 arranged inside the stirring port 43 and located radially on the main disc 42. The stirring blade 5 has an regulating shaft 62 rotatably connected to the regulating hole 61, and an elastic reset element is installed between the regulating shaft 62 and the regulating hole 61. When the main disc 42 rotates, the stirring blade 5 opens relative to the stirring port 43 under the action of fluid resistance, thereby further increasing its stirring contact surface and improving its material disturbance.

[0027] Furthermore, to ensure the normal movement and tumbling of the stirring blade 5, a guide plate 51 perpendicular to it is provided at the edge of the stirring blade 5, with the guide plates 51 on both sides of the stirring blade 5 facing opposite directions. The guide plate 51 is driven by the fluid impact to tumble the stirring blade 5, and the edge of the stirring blade 5 then faces the bottom of the reactor body 1, guiding the material deposited at the bottom.

[0028] Furthermore, the stirring shaft 2 is equipped with several stirring rods 21 arranged axially. The number and specifications of the stirring rods 21 can be adjusted according to actual needs to adapt to the reactor body 1 of different heights.

[0029] In addition, similar to existing tank structures, the reactor body 1 in this embodiment includes an inner shell 11 and an outer shell 12, with an insulation layer 13 between the inner shell 11 and the outer shell 12. A cooling coil 19 is installed inside the reactor body 1, and a pressure-bearing structure is provided on the outside of the reactor body 1. The insulation layer 13 and the pressure-bearing structure improve the overall structural strength of the reactor body 1, enabling it to meet the requirements of high-pressure and high-temperature reactions. The cooling coil 19 inside the reactor body 1 achieves cooling.

[0030] Meanwhile, the pressure-bearing structure includes several support plates 14 arranged in a circular shape on the outer side of the reactor body 1, with the outer diameter of each support plate 14 decreasing from the middle towards both ends. This pressure-bearing structure provides local reinforcement to the reactor body 1 and also provides an installation platform for easy loading and fixing of the reactor body 1 as a whole.

[0031] As can be seen, the reactor body 1 has a feed inlet 15 at the upper end and a discharge outlet 16 at the lower end. Both the feed inlet 15 and the discharge outlet 16 are equipped with flanges 17. The feed inlet 15 and the discharge outlet 16 are sealed by flanges 17, and are used in conjunction with sensing elements to monitor abnormal internal pressure relief in real time. The feed inlet 15 is equipped with a bottom-inserting pipe 22 extending below the liquid surface. In addition, the reactor body 1 is also connected to a half-inserting pipe, a full-inserting pipe, a hydrogen inlet pipe, and an ethylene inlet pipe to meet the reaction supply requirements.

[0032] It is evident that the reactor body 1 has a built-in temperature sensor and a pressure sensor. The reactor body 1 has pressure relief ports 18 on its side and top. These pressure relief ports 18, together with the external pressure relief pipe, can provide emergency pressure relief for the internal materials. In addition, the reactor body 1 is usually equipped with components such as rupture discs and vent valves to further improve the safety of the reaction.

[0033] Preferably, the circulation pipe 7 is equipped with a flow meter and a pressure sensor, which uses a feedback regulation method to ensure the stability of material circulation and transmission.

[0034] In summary, the principle of this embodiment is as follows: the stirring plate 4 inside the reactor body 1 rotates in conjunction with the stirring shaft 2, wherein the adjusting component 6 causes the stirring blades 5 to open when the stirring plate 4 rotates, thereby guiding the bottom deposited material to rise, improving the reaction rate of aluminum powder material, and preventing aluminum powder from entering the solid sleeve 3 and causing wear on the stirring structure.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0036] Although this document frequently uses terms such as reactor body 1, inner shell 11, outer shell 12, insulation jacket 13, support plate 14, feed inlet 15, discharge outlet 16, flange 17, pressure relief port 18, cooling coil 19, stirring shaft 2, stirring rod 21, bottom insertion tube 22, fixing sleeve 3, stirring plate 4, stirring seat 41, main plate body 42, stirring port 43, stirring blade 5, guide plate 51, adjusting assembly 6, adjusting hole 61, adjusting shaft 62, circulation pipe 7, and high-pressure circulation pump 71, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A reactor apparatus for effectively improving the production efficiency of triethylaluminum, comprising a reactor body (1), wherein an axially extending stirring shaft (2) is rotatably mounted inside the reactor body (1), and a fixing sleeve (3) is installed between the lower end of the stirring shaft (2) and the reactor body (1), characterized in that, The bottom of the reactor body (1) is rotatably mounted with a stirring plate (4) connected to a stirring shaft (2). The stirring plate (4) is equipped with stirring blades (5) and an adjustment component (6) is provided between the stirring blades (5) and the stirring plate (4). The bottom and top of the reactor body (1) are connected to a high-pressure circulating pump (71) through a circulation pipe (7).

2. The reactor apparatus for effectively improving the production efficiency of triethylaluminum according to claim 1, characterized in that, The stirring plate (4) includes a stirring seat (41) connected to the stirring shaft (2). The stirring seat (41) is rotatably connected to the fixed sleeve (3). The stirring seat (41) is connected to a main plate body (42). The main plate body (42) has several fan-shaped stirring ports (43) that match the stirring blades (5). The stirring blades (5) are rotatably installed in the stirring ports (43).

3. The reaction kettle device for improving the production efficiency of triethylaluminum according to claim 2, characterized in that, The adjustment assembly (6) includes an adjustment hole (61) arranged inside the stirring port (43) and located in the radial direction of the main plate (42). The stirring blade (5) has an adjustment shaft (62) rotatably connected to the adjustment hole (61). An elastic reset member is installed between the adjustment shaft (62) and the adjustment hole (61).

4. The reaction kettle device for improving the production efficiency of triethylaluminum according to claim 3, characterized in that, The stirring blade (5) is provided with a guide plate (51) perpendicular to it at the edge, and the guide plates (51) on both sides of the stirring blade (5) face opposite directions.

5. The reactor apparatus for effectively improving the production efficiency of triethylaluminum according to claim 1, characterized in that, The stirring shaft (2) is equipped with several stirring rods (21) arranged axially.

6. The reaction kettle device for improving the production efficiency of triethylaluminum according to claim 1, characterized in that, The reactor body (1) includes an inner shell (11) and an outer shell (12), with a heat insulation interlayer (13) between the inner shell (11) and the outer shell (12). The reactor body (1) is equipped with a cooling coil (19) inside, and a pressure-bearing structure is provided on the outside of the reactor body (1).

7. The reaction kettle device for improving the production efficiency of triethylaluminum according to claim 6, characterized in that, The pressure-bearing structure includes several support plates (14) arranged in the middle of the outer side of the reactor body (1) and facing both ends. The support plates (14) are in the shape of a ring and the outer diameter of each support plate (14) decreases from the middle to both ends.

8. The reactor apparatus for effectively improving the production efficiency of triethylaluminum according to claim 1, characterized in that, The reactor body (1) has a feed inlet (15) at the upper end and a discharge outlet (16) at the lower end. The feed inlet (15) and the discharge outlet (16) are respectively equipped with flanges (17). The feed inlet (15) is equipped with a bottom insertion pipe (22).

9. The reaction kettle device for improving the production efficiency of triethylaluminum according to claim 1, characterized in that, The reactor body (1) has a built-in temperature sensor and a pressure sensor. The reactor body (1) has pressure relief ports (18) on its side and top. The reactor body (1) is connected to a half-insertion pipe, a full-insertion pipe, a hydrogen inlet pipe and an ethylene inlet pipe.

10. The reaction kettle device for improving the production efficiency of triethylaluminum according to claim 1, characterized in that, The circulation pipe (7) is equipped with a flow meter and a pressure sensor.

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