2, 6TDA hydrogenation reaction kettle

Abstract

The utility model relates to the field of reaction kettles, particularly discloses a 2, 6TDA hydrogenation reaction kettle, and solves the technical problems of high cost and large potential safety hazard due to the adoption of mechanical seal in the existing hydrogenation reaction kettle. The 2, 6TDA hydrogenation reaction kettle comprises a kettle body; the driving assembly is arranged on the outer side of the top of the kettle body; the outer magnetic steel is arranged on the outer side of the kettle body and connected with the driving assembly; the inner magnetic steel is arranged on the outer side of the kettle body and is arranged on the outer magnetic steel at intervals; the stirring assembly comprises a stirring shaft and a stirring paddle group which are connected with each other, stirring paddles are arranged in the kettle body, and the stirring shaft is connected with the inner magnetic steel; the cooling assembly comprises a cooling sleeve arranged on the outer side of the kettle body in a sleeving manner; and the heating assembly comprises a heat exchange tube at least partially arranged in the kettle body, the heat exchange tube is communicated with a heat source, easy leakage points are eliminated, no hydrogen leakage is ensured, and the reaction safety is ensured.

Description

Technical Field

[0001] This utility model relates to the field of reactor technology, and more specifically, to a 2,6TDA hydrogenation reactor. Background Technology

[0002] 2,6-TDA, or 2,6-diaminotoluene, is an organic compound, typically a white to pale yellow crystalline solid. It is an important antioxidant widely used in the plastics, rubber, and lubricant industries. Hydrogenation is a crucial step in the preparation of 2,6-TDA and is usually carried out in a hydrogenation reactor.

[0003] Hydrogenation reactors are widely used in various catalytic reactions, high-temperature and high-pressure synthesis, hydrogenation reactions, gas-liquid two-phase reactions, liquid-liquid two-phase reactions, exothermic reactions, composition testing, stability and corrosion testing, fine processing, supercritical reactions, catalyst evaluation and development, etc. They are mainly distributed in petrochemical, chemical, pharmaceutical, polymer synthesis, and metallurgical fields. Hydrogenation reactors have advantages such as high temperature resistance, corrosion resistance, and high production capacity, and are widely used in pharmaceutical, beverage, chemical, pigment, resin, and scientific research industries. The reactor integrates a reaction vessel, a reaction condition control system, and experimental equipment. It allows for strict control of important parameters such as temperature, pressure, stirring, and reactants / products during the reaction process.

[0004] In existing technologies, mechanical seals are widely used in hydrogenation reactors, such as the mechanical seal device and sealing method used in the hydrogenation reactor in CN105090517A. However, due to the high pressure and temperature of hydrogenation reactions, mechanical seals are expensive. Mechanical seals also require cooling and pressure balancing devices due to the high pressure and temperature, which are complex and costly. Mechanical seals are not wear-resistant and need to be replaced regularly. Hydrogen has a wide explosive range, and leakage can cause the container to explode, posing a significant safety hazard. Utility Model Content

[0005] The purpose of this invention is to provide a 2,6TDA hydrogenation reactor that solves the technical problems of high cost and significant safety hazards associated with the current use of mechanical seals in hydrogenation reactors.

[0006] This utility model is achieved through the following technical solution:

[0007] A 2,6TDA hydrogenation reactor includes a reactor body, a drive assembly, an outer magnet, an inner magnet, a stirring assembly, a cooling assembly, and a heating assembly.

[0008] The drive assembly is located on the outer side of the top of the vessel body;

[0009] The external magnet is located on the outside of the vessel body and is connected to the output shaft of the drive assembly.

[0010] The inner magnetic steel is arranged outside the kettle body and is arranged in a spaced manner with the outer magnetic steel, and a separation sleeve is arranged between the outer magnetic steel and the inner magnetic steel.

[0011] The stirring assembly comprises a stirring shaft and a stirring paddle group connected with each other, the stirring paddle is arranged inside the kettle body, and the stirring shaft is connected with the inner magnetic steel.

[0012] The cooling assembly comprises a cooling sleeve arranged outside the kettle body.

[0013] The heating assembly comprises a heat exchange pipe arranged at least partially inside the kettle body, and the heat exchange pipe is connected with a heat source.

[0014] In some embodiments, the stirring paddle group comprises a first stirring paddle, a second stirring paddle, a first sleeve, a first bevel gear, a second bevel gear and a third bevel gear connected with the first bevel gear and the second bevel gear; the first stirring paddle and the first sleeve are arranged on the stirring shaft, the first stirring paddle is connected with the first bevel gear through the first sleeve, and the second stirring paddle and the second bevel gear are connected with the stirring shaft.

[0015] In some embodiments, the cooling sleeve and the kettle body jointly define a cooling cavity for containing cooling water.

[0016] In some embodiments, the outer magnetic steel is arranged outside the inner magnetic steel.

[0017] In some embodiments, the supernatant outlet pipe has one end located in the middle of the kettle body and the other end extending out of the kettle body.

[0018] In some embodiments, the hydrogen inlet pipe has one end located in the bottom of the kettle body and the other end extending out of the kettle body.

[0019] In some embodiments, the kettle body is further provided with a pressure relief pipe.

[0020] In some embodiments, the separation sleeve is connected with the top of the kettle body and is arranged in a spaced manner with the inner magnetic steel and the outer magnetic steel.

[0021] The technical scheme of the utility model has at least the following advantages and beneficial effects:

[0022] (1) The utility model discloses a driving assembly, an inner magnetic steel, an outer magnetic steel, a separation sleeve, a stirring assembly, a cooling assembly and a heating assembly are arranged on the kettle body, and the driving assembly is connected with the inner magnetic steel.

[0023] (2) The utility model discloses set up the stirring paste group, wherein, first stirring paste and second stirring paste are coaxial counter -rotating stirring paste, further improve mixing effect, promote the contact between hydrogen and reactant, accelerate the reaction rate.

[0024] (3) The utility model discloses set up the cooling jacket located at the outside of cauldron body, and the cooling jacket and cauldron body are surrounded and form the cooling cavity for containing cooling water to carry out uniform cooling to the reactant in the inside of cauldron body through cooling water.

[0025] (4) The utility model discloses include at least partial heat exchange pipe of being located in the cauldron body, and the heat exchange pipe is connected with heat source to realize the temperature control to the reactant in the inside of cauldron body.

[0026] (5) The utility model discloses reasonable in design, simple structure, good practicality. DRAWINGS

[0027] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the drawing needed to be used in the embodiment briefly introduces, should understand, the following drawing only shows some embodiment of the utility model, therefore should not be regarded as the limited scope, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0028] Figure 1 The structure schematic diagram of 2,6TDA hydrogenation reaction kettle provided by the embodiment of the utility model is shown in the drawing.

[0029] Figure 2 The structure top view of 2,6TDA hydrogenation reaction kettle provided by the embodiment of the utility model is shown in the drawing.

[0030] Figure 3 For Figure 1 The enlarged view of A place is shown in the drawing.

[0031] The icon is shown in the drawing.

[0032] 100, cauldron body is shown in the drawing.

[0033] 200, drive assembly is shown in the drawing.

[0034] 300, inner magnetic steel is shown in the drawing.

[0035] 400, outer magnetic steel is shown in the drawing.

[0036] 500, cooling jacket is shown in the drawing.

[0037] 600, heat exchange pipe is shown in the drawing.

[0038] 710, stirring shaft; 720, first stirring paddle; 730, second stirring paddle; 740, first sleeve; 750, first bevel gear; 760, second bevel gear; 770, third bevel gear;

[0039] 800, pressure relief pipe;

[0040] 900, feeding pipe;

[0041] 1000, catalyst slurry supplement pipe;

[0042] 1100, catalyst slurry return pipe;

[0043] 1200, liquid material feeding pipe;

[0044] 1300, helium gas inlet pipe;

[0045] 1400, temperature measuring port;

[0046] 1500, discharge pipe;

[0047] 1600, supernatant outlet pipe;

[0048] 1700, hydrogen gas inlet pipe. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0050] Embodiment 1

[0051] The embodiments of the present application provide a 2,6TDA hydrogenation reaction kettle to replace mechanical seal.

[0052] Please refer to Figure 1 , Figure 2 and Figure 3 The embodiments of the present application provide a 2,6TDA hydrogenation reaction kettle, which comprises a kettle body 100, a driving assembly 200, an outer magnetic steel 400, an inner magnetic steel 300, a stirring assembly, a cooling assembly and a heating assembly.

[0053] In the present embodiment, the driving assembly 200 is arranged on the top outer side of the kettle body 100. In the present embodiment, the driving assembly 200 is a driving motor, and the driving motor is provided with an output shaft.

[0054] In the embodiment, the outer magnetic steel 400 is arranged outside the kettle body 100 and connected to the driving assembly 200. In the embodiment, the outer magnetic steel 400 is connected to the output shaft of the driving motor and is driven to rotate by the driving motor. The outer magnetic steel 400 is a cup-shaped magnetic steel with an opening downward.

[0055] In the embodiment, the inner magnetic steel 300 is arranged outside the kettle body 100 and is arranged at intervals with the outer magnetic steel 400. In the embodiment, the inner magnetic steel 300 is a cup-shaped magnetic steel with an opening downward. The central axis of the inner magnetic steel 300 coincides with the central axis of the outer magnetic steel 400. The inner magnetic steel 300 is arranged inside the outer magnetic steel 400.

[0056] In the embodiment, the stirring assembly includes a stirring shaft 710 and a stirring paddle group connected to each other. The stirring paddle is arranged inside the kettle body 100. The stirring shaft 710 is connected to the inner magnetic steel 300.

[0057] In the embodiment, the cooling assembly includes a cooling jacket 500 arranged outside the kettle body 100 to cool the kettle body 100. In the embodiment, the cooling jacket 500 can be a refrigeration pipeline or cooling water. In the embodiment, the cooling jacket 500 is provided with a cooling water inlet 510 and a cooling water outlet 520.

[0058] In the embodiment, the heating assembly includes a heat exchange pipe 600 arranged at least partially inside the kettle body 100. The heat exchange pipe 600 is connected to a heat source. In the embodiment, the heat source is hot oil. In the embodiment, the heat exchange pipe 600 is a coiled pipe. In the embodiment, the heat exchange pipe 600 is provided with a heat exchange liquid inlet 610 and a heat exchange liquid outlet 620 which extend out of the kettle body 100.

[0059] In the embodiment, the stirring paddle set comprises a first stirring paddle 720, a second stirring paddle 730, a first sleeve 740, a first bevel gear 750, a second bevel gear 760, and a third bevel gear 770 connecting the first bevel gear 750 and the second bevel gear 760; the first stirring paddle 720 and the first sleeve 740 are sleeved on the stirring shaft 710, the first stirring paddle 720 is connected to the first bevel gear 750 through the first sleeve 740, and the second stirring paddle 730 and the second bevel gear 760 are connected to the stirring shaft 710; in the embodiment, the central lines of the first stirring paddle 720, the second stirring paddle 730, the first bevel gear 750, the second bevel gear 760, and the first sleeve 740 are the same axis, the first bevel gear 750 and the second bevel gear 760 are arranged in a spaced manner and are engaged with the third bevel gear 770; the stirring shaft 710 drives the stirring paddle and the second bevel gear 760 to rotate, the second bevel gear 760 drives the third bevel gear 770 to rotate, and then the third bevel gear 770 drives the first bevel gear 750, the first sleeve 740 connected to the first bevel gear 750, and the first stirring paddle 720 to rotate, so that the first stirring paddle 720 and the second stirring paddle 730 are coaxially counter-rotated; in the embodiment, a second sleeve sleeved on the first bevel gear 750, the second bevel gear 760, and the third bevel gear 770 is arranged to isolate the gears and the liquid; in the embodiment, the first stirring paddle 720 is arranged at a height not higher than the height of the highest liquid level; in the embodiment, the second stirring paddle 730 is close to the bottom of the kettle; in the embodiment, a plurality of first stirring paddles 720 and second stirring paddles 730 can be arranged in a spaced manner along the extension direction of the stirring shaft 710.

[0060] In the embodiment, the cooling jacket 500 and the kettle body 100 jointly form a cooling cavity for containing cooling water, so as to water-cool the kettle body 100.

[0061] In the embodiment, the outer magnetic steel 400 is sleeved outside the inner magnetic steel 300, and the isolation sleeve 310 is arranged between the outer magnetic steel 400 and the inner magnetic steel 300 to isolate and prevent leakage of hydrogen, and the isolation sleeve 310 is connected to the top of the kettle body 100 and jointly forms a sealed cavity with the kettle body 100.

[0062] In the embodiment, the supernatant outlet pipe 1600 is further arranged, one end of the supernatant outlet pipe 1600 is located in the middle of the kettle body 100, and the other end of the supernatant outlet pipe 1600 extends out of the kettle body 100 to pass out the supernatant through the internal pressure of the kettle body 100; in the embodiment, the supernatant outlet pipe 1600 is provided with a valve.

[0063] In the embodiment, the hydrogen inlet pipe 1700 is further arranged, one end of the hydrogen inlet pipe 1700 is located at the bottom of the kettle body 100, and the other end of the hydrogen inlet pipe 1700 extends out of the kettle body 100; in the embodiment, the hydrogen inlet pipe 1700 is provided with a valve.

[0064] In the embodiment, the kettle body 100 is also provided with a pressure relief pipe 800, the pressure relief pipe 800 is provided with a bursting disc, and the pressure relief pipe 800 is provided with a valve.

[0065] In the embodiment, the kettle body 100 is provided with a feeding pipe 900, and the feeding pipe 900 is provided with a valve.

[0066] In the embodiment, the kettle body 100 is provided with a catalyst slurry supplement pipe 1000, and the catalyst slurry supplement pipe 1000 is provided with a valve.

[0067] In the embodiment, the kettle body 100 is provided with a catalyst slurry return pipe 1100, and the catalyst slurry return pipe 1100 is provided with a valve.

[0068] In the embodiment, the kettle body 100 is provided with a liquid material feeding pipe 1200, and the liquid material feeding pipe 1200 is provided with a valve.

[0069] In the embodiment, the kettle body 100 is provided with a helium gas inlet pipe 1300, and the helium gas inlet pipe 1300 is provided with a valve.

[0070] In the embodiment, the kettle body 100 is provided with a temperature measuring port 1400 at the bottom, and is internally provided with a temperature detector, and the temperature measuring port 1400 is provided with a valve.

[0071] In the embodiment, the kettle body 100 is provided with a discharge pipe 1500 at the bottom, and the discharge pipe 1500 is provided with a valve.

[0072] In the embodiment, the kettle body 100 is provided with a connecting plate at the top, and the device further comprises a protective sleeve sleeved outside the outer magnetic steel 400, the protective sleeve is detachably connected with the connecting plate through bolts or pins, the protective sleeve is provided with a containing cavity which is isolated from the outside, an output shaft of the driving motor is connected with the outer magnetic steel 400 located in the protective sleeve, and the inner magnetic steel 300 and part of the stirring shaft 710 are also located in the containing cavity of the protective sleeve.

[0073] The use process of the 2,6TDA hydrogenation reaction kettle in the embodiment 1 of the utility model will be described in detail as follows:

[0074] In use, the driving motor drives the outer magnetic steel 400 to rotate, the outer magnetic steel 400 drives the inner magnetic steel 300 to rotate, the inner magnetic steel 300 drives the connected stirring shaft 710 to rotate, and then, the stirring paddle and the second bevel gear 760 are driven to rotate, the second bevel gear 760 drives the third bevel gear 770 to rotate, the third bevel gear 770 drives the first bevel gear 750, the first sleeve 740 connected to the first bevel gear 750 and the first stirring paddle 720 to rotate, so that the first stirring paddle 720 and the second stirring paddle 730 realize coaxial counter-rotation, the temperature inside is controlled through the heat exchange pipe 600 inside the kettle body 100 and the cooling jacket 500 outside the kettle body 100, and the temperature of the kettle bottom reactant is monitored through the temperature measuring port 1400 extending into the bottom of the kettle body 100.

[0075] Embodiment 2

[0076] The utility model discloses an embodiment provides a 2, 6TDA hydrogenation reaction kettle to replace mechanical seal.

[0077] The utility model discloses an embodiment 2 provides a 2, 6TDA hydrogenation reaction kettle, and the difference with embodiment 1 is only in this embodiment, the kettle body 100 inside still includes the heat exchange snake pipe for passing in cooling water to carry out cooling action to the kettle body 100 inside material.

[0078] The embodiment of the utility model has at least the following advantages:

[0079] (1) the utility model discloses a drive assembly is installed on the output shaft of outer magnetic steel, and the rotation of outer magnetic steel is driven through drive assembly, and the rotation of inner magnetic steel is driven through outer magnetic steel, and the rotation of stirring shaft is driven through inner magnetic steel, thereby realizing stirring effect, and hydrogen is isolated in the isolation sleeve inside the isolation sleeve, and the overflow is prevented.

[0080] (2) the utility model discloses setting up stirring paddle group, and wherein, the first stirring paddle and the second stirring paddle are coaxial counter-rotation stirring paddle, further improve mixing effect, promote the contact between hydrogen and reactant, and accelerate the reaction rate.

[0081] (3) the utility model discloses setting up the cooling jacket located at the outside of kettle body, and the cooling cavity for containing cooling water is formed with the kettle body, so that the reactant in the kettle body is uniformly cooled through cooling water.

[0082] (4) the utility model discloses including at least part heat exchange pipe arranged in the kettle body, and the heat exchange pipe is communicated with heat source, so that the temperature control of reactant is realized in the kettle body.

[0083] (5) the utility model discloses reasonable in design, simple structure, and good practicality.

[0084] The above merely is preferred embodiment of the present utility model, and is not for limiting the present utility model, for the person skilled in the art, the present utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A 2,6TDA hydrogenation reactor, characterized in that, The utility model relates to a kind of stirring kettle, including: Kettle body; Driving assembly, located at the top outside of the kettle body; Outer magnetic steel, located at the outside of the kettle body, connected with the driving assembly; Inner magnetic steel, located at the outside of the kettle body, is arranged at intervals in the outer magnetic steel; Stirring assembly, including the stirring shaft and stirring paddle group connected with each other, the stirring paddle is located in the kettle body, and the stirring shaft is connected with the inner magnetic steel; Cooling assembly, including cooling jacket set on the outside of the kettle body; Heating assembly, including at least part of the heat exchange pipe located in the kettle body, and the heat exchange pipe is communicated with heat source.

2. The 2,6TDA hydrogenation reactor of claim 1, wherein, The stirring paddle group includes first stirring paddle, second stirring paddle, first sleeve, first bevel gear, second bevel gear and third bevel gear connected with the first bevel gear and the second bevel gear;The first stirring paddle and the first sleeve are set on the stirring shaft, the first stirring paddle is connected with the first bevel gear by first sleeve, and the second stirring paddle and the second bevel gear are connected with the stirring shaft.

3. The 2,6TDA hydrogenation reactor of claim 1, wherein, The cooling jacket and the kettle body form a cooling cavity for containing cooling water.

4. The 2,6TDA hydrogenation reactor according to any one of claims 1-3, characterized in that, The outer magnetic steel is set outside the inner magnetic steel, and an isolation sleeve is arranged between the outer magnetic steel and the inner magnetic steel.

5. The 2,6TDA hydrogenation reactor according to any one of claims 1-3, characterized in that, It also includes supernatant outlet pipe, one end of the supernatant outlet pipe is located in the middle of the kettle body, and the other end extends out of the kettle body.

6. The 2,6TDA hydrogenation reactor according to any one of claims 1-3, characterized in that, It also includes hydrogen inlet pipe, one end of the hydrogen inlet pipe is located at the bottom of the kettle body, and the other end extends out of the kettle body.

7. The 2,6TDA hydrogenation reactor according to any one of claims 1-3, characterized in that, The kettle body is also provided with a pressure relief pipe.

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