Electric heating graphite reaction kettle

Abstract

The invention relates to an electric heating graphite reaction kettle, relates to the technical field of reaction kettles, and aims at solving the problem that a traditional reaction kettle is low in material heating efficiency. The electric heating graphite reaction kettle comprises a kettle body and a kettle cover arranged at the top of the kettle body, wherein a stirring device for stirring materials is arranged in the kettle body; an extension sleeve is arranged in the kettle body, a plurality of groups of flow guide holes for materials to flow are formed in the inner circumferential wall of the extension sleeve, a plurality of groups of through-flow holes communicated with the flow guide holes are formed in the end wall of the extension sleeve in a penetrating manner, and the two ends of each through-flow hole are communicated with the interior of the kettle body; and a heating assembly for heating the kettle body is arranged outside the kettle body. The reaction kettle has the effect of improving the material heating efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of reactors, and in particular to an electrically heated graphite reactor. Background Art

[0002] Reactors are widely used in the fields of petroleum, chemical industry, rubber, pesticide, dye, medicine and food. They are pressure vessels used to complete processes such as vulcanization, nitration, hydrogenation, hydrocarbonization, polymerization, condensation, etc. Common types of reactors include carbon manganese steel, stainless steel and graphite.

[0003] In the related technology, an electrically heated graphite reactor includes a reactor body and a reactor cover arranged on the reactor body, a stirring shaft is rotatably installed inside the reactor body, a stirring blade is fixedly connected to the stirring shaft, and a rotating motor for driving the stirring shaft to drive the stirring blade to rotate is installed on the reactor cover; a steam pipe for heating the reactor body is arranged outside the reactor body.

[0004] With regard to the above-mentioned related technologies, in the process of heating the fluid material inside the reactor through external steam or other pipelines, the time for the reactor to be gradually heated from the outside to the inside to reach the predetermined reaction temperature is very long, resulting in low heating efficiency of the fluid material inside the reactor, which needs to be improved. Summary of the invention

[0005] In order to improve the problem of low heating efficiency of materials in traditional reactors, the present application provides an electrically heated graphite reactor.

[0006] The electric heating graphite reactor provided in this application adopts the following technical solution: An electrically heated graphite reactor comprises a reactor body and a reactor cover arranged on the top of the reactor body, wherein a stirring device for stirring materials is arranged inside the reactor body; an extension sleeve is arranged inside the reactor body, and a plurality of groups of guide holes for material flow are opened on the inner peripheral wall of the extension sleeve, and a plurality of groups of through holes connected with the guide holes are opened through the end wall of the extension sleeve, and both ends of the through holes are connected with the inside of the reactor body; a heating component for heating the reactor body is arranged outside the reactor body.

[0007] By adopting the above technical scheme, the heating component heats the kettle body, the extension sleeve and the fluid material therein, the stirring device stirs the fluid material inside the kettle body, and applies centrifugal force to the material, so that the material rotates around the stirring device inside the kettle body; during the rotation of the fluid material, the material inside the kettle body flows toward the edge of the kettle body, enters the extension sleeve through the guide hole, and returns to the kettle body again through the flow hole, thereby realizing the continuous circulation of the fluid material inside the kettle body, and in the above circulation process, the materials at the center and edge of the kettle body are in close contact with the heated extension sleeve, thereby improving the heating efficiency and uniformity of the materials at various locations inside the kettle body, and further improving the heating efficiency and heating effect of the kettle body on the materials.

[0008] Preferably, the guide holes are arranged in a plurality of layers along the axial direction of the extension sleeve, the guide holes in each layer are distributed along the circumferential direction of the extension sleeve, and the adjacent guide holes in each layer are staggered along the axial direction of the extension sleeve.

[0009] By adopting the above technical solution, the multi-layer guide holes make it convenient for fluid materials at different depths inside the kettle body to easily enter the extension sleeve for uniform heating. The staggered distribution of the guide holes makes the guide holes more evenly dispersed on the inner wall of the extension sleeve, so that fluid materials at various locations inside the kettle body can more easily enter the extension sleeve for uniform heating.

[0010] Preferably, the ends of the guide holes facing the inside of the kettle body are inclined toward the bottom of the extension sleeve, and the ends of the guide holes of the layer closest to the kettle cover facing the inside of the kettle body are inclined toward the kettle cover.

[0011] By adopting the above technical solution, during the process of the fluid material rotating inside the reactor, due to the restriction of the extension sleeve, the material at the edge of the reactor body flows toward the reactor cover, and with the inclined guide hole, the rotating material can enter the extension sleeve more conveniently and labor-savingly for uniform heating, and the inclined guide hole reduces the kinetic energy lost by the material hitting the flow holes and the guide hole during the process of entering the extension sleeve, which facilitates the material to flow faster inside the flow holes and the guide hole, so as to facilitate faster position exchange and uniform heating of the material in the middle and edge of the reactor body; The rotating material flows inside the flow holes toward the direction close to the kettle cover. The guide holes on the highest layer facilitate the material inside the flow holes to easily return to the middle area of ​​the kettle body through the inclined direction of the guide holes, reducing the kinetic energy lost by the material colliding with the inner wall of the guide holes when passing through the guide holes on the highest layer, making it easier for the material inside the flow holes to fly toward the middle area of ​​the kettle body, and making it easier to quickly change the position of the material in the center and edge of the kettle body, thereby improving the heating efficiency and uniformity of the material in various parts of the kettle body, and further improving the heating efficiency and heating effect of the kettle body on the material.

[0012] Preferably, the through holes are distributed at intervals along the circumference of the extension sleeve, and adjacent through holes are distributed staggered along the radial direction of the extension sleeve.

[0013] By adopting the above technical solution, the staggered distribution of flow holes reduces the number of flow holes existing in the same radial direction of the extension sleeve, thereby ensuring the structural strength of the extension sleeve, and while ensuring the structural strength of the extension sleeve, increases the inner diameter of the flow holes to facilitate the circulation of fluid materials; in addition, the staggered distribution of flow holes increases the distance between adjacent flow holes, thereby reducing the production cost and refinement requirements during the extension sleeve processing.

[0014] Preferably, the inner peripheral wall of the end of the extension sleeve is provided with a flow guiding notch connected to all the flow holes.

[0015] By adopting the above technical solution, the guide notch ensures that the end of the flow hole is stably connected with the interior of the kettle body, and makes it easier for the material inside the extension sleeve to flow conveniently at the end of the flow hole.

[0016] Preferably, the heating assembly comprises a protective layer, a heating element, an insulating layer and an outer shell; the protective layer is arranged on the outer wall of the kettle body, the heating element is wound around the outside of the protective layer, and the insulating layer is arranged on the inside and outside of the heating element, one group of the insulating layers is used to cover the protective layer, and the other group of the insulating layers is used to cover the heating element; the outer shell is sleeved on the outside of the insulating layer and the heating element to protect the insulating layer.

[0017] By adopting the above technical scheme, the heating element heats the kettle body and the materials inside it, the heating component inside the outer shell is protected, and the insulation layer reduces the heat loss of the kettle body, thereby ensuring the heating effect and heating efficiency of the kettle body by the heating element; the protective layer increases the structural strength of the kettle body itself, and reduces the occurrence of kettle body rupture caused by external forces; thus, a stable and efficient heating force is achieved on the kettle body and the materials inside it.

[0018] Preferably, a fixed ring plate is provided on the peripheral wall of the kettle cover, a connecting ring plate is provided on the outside of the kettle body, and the heating assembly is located between the fixed ring plate and the connecting ring plate; a plurality of groups of fasteners for fixing and connecting the fixed ring plate and the connecting ring plate are provided between the fixed ring plate and the connecting ring plate.

[0019] By adopting the above technical solution, the area between the fixed ring plate and the connecting ring plate protects the heating assembly, and the fixed ring plate and the connecting ring plate are stably connected by fasteners, further increasing the overall structural stability of the reactor.

[0020] Preferably, a flow guide portion for circulating the heat-conducting medium is provided inside the extension sleeve, and a heat supply component for conveying the heat-conducting medium toward the inside of the flow guide portion is provided on the kettle body.

[0021] By adopting the above technical solution, the heating component transports the heated heat-conducting medium to the inside of the guide part, and the material in the middle position of the extension sleeve contacts the guide part, so that the heat-conducting medium inside the guide part assists in heating the material in the middle position of the kettle body, and cooperates with the heating component to improve the heating efficiency and uniformity of the material in various places inside the kettle body, thereby further improving the heating efficiency and heating effect of the kettle body on the material.

[0022] Preferably, the guide part includes a guide pipe, a feed pipe, a discharge pipe and an auxiliary rod; the guide pipe is arranged between the extension sleeve and the stirring device, and the guide pipe is extended in a spiral shape along the axial direction of the extension sleeve; the feed pipe is connected to one end of the guide pipe, and the discharge pipe is connected to the other end of the guide pipe, and the feed pipe and the discharge pipe are both connected to the heating component, and the auxiliary rod is arranged between the guide pipe and the extension sleeve for fixedly connecting the guide pipe and the extension sleeve.

[0023] By adopting the above technical solution, the auxiliary rod assists in fixing the guide tube so that the guide tube can be installed around the stirring device, and cooperates with the feed pipe and the discharge pipe to perform stable auxiliary heating on the material in the center of the kettle body, thereby further improving the heating efficiency and uniformity of the material inside the kettle body.

[0024] Preferably, the heating component includes a circulation pipe, a transfer box and a circulation pump; the circulation pipe is spirally wound between the kettle body and the heating component, and one end of the circulation pipe is connected to the feed pipe; the transfer box is arranged outside the kettle body, and the discharge pipe is connected to the inside of the transfer box; the circulation pump is connected to the transfer box, and the output end of the circulation pump is connected to the end of the circulation pipe away from the feed pipe.

[0025] By adopting the above technical scheme, the circulation pump transports the heat-conducting medium inside the transfer box to the circulation pipe for transportation. During the flow of the heat-conducting medium inside the circulation pipe, it is heated by the heating component, and then flows to the inside of the guide pipe to heat the material in the center of the kettle body; after the heating is completed, the cooled heat-conducting medium is reintroduced into the transfer box so as to be recycled through the circulation pump and the circulation pipe, thereby realizing the efficient use of the heat generated by the heating component, and thereby effectively heating the material in the middle of the kettle body, realizing the effective exchange of heat between the edge of the kettle body and the heat in the center, and realizing the recycling of heat.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The kettle body is heated by setting a heating component, and the stirring device stirs the fluid material inside the kettle body; the fluid material is continuously circulated inside the kettle body through the guide holes and the through-flow holes, so that the materials at the center and edge of the kettle body are in close contact with the heated extension sleeve, thereby improving the heating efficiency and uniformity of the materials in various places inside the kettle body, and further improving the heating efficiency and heating effect of the kettle body on the materials; 2. The kettle body and the materials inside it are heated by setting a heating element, and the heating components inside the shell are protected. The insulation layer reduces the heat loss of the kettle body, ensuring the heating effect and heating efficiency of the kettle body by the heating element; the protective layer increases the structural strength of the kettle body itself, reduces the phenomenon of kettle body rupture caused by external forces, and realizes stable and efficient heating force on the kettle body and the materials inside it; 3. By setting up a heating component to transport the heated heat-conducting medium inside the guide part, the material in the middle of the extension sleeve contacts the guide part, so that the heat-conducting medium inside the guide part assists in heating the material in the middle of the kettle body, and cooperates with the heating component to improve the heating efficiency and uniformity of the material in various parts of the kettle body, further improving the heating efficiency and heating effect of the kettle body on the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an electrically heated graphite reactor in Example 1 of the present application.

[0028] Figure 2 It is a cross-sectional schematic diagram of the internal structure of the kettle body in Example 1.

[0029] Figure 3 It is a cross-sectional schematic diagram of the internal structure of the extension sleeve in Example 1.

[0030] Figure 4 It is a cross-sectional schematic diagram of the internal structure of the kettle body and the heating component in Example 2.

[0031] Figure 5 It is a structural schematic diagram of the connection relationship between the guide part and the heating component in Example 2.

[0032] Description of reference numerals: 1. Kettle body; 11. Kettle cover; 111. Fixed ring plate; 12. Stirring device; 13. Connecting ring plate; 131. Fastener; 2. Extension sleeve; 21. Guide hole; 22. Through hole; 23. Guide gap; 3. Heating component; 31. Protective layer; 32. Heating element; 33. Insulating layer; 34. Outer shell; 4. Guide part; 41. Guide pipe; 42. Feed pipe; 43. Discharge pipe; 44. Auxiliary rod; 5. Heating component; 51. Circulation pipe; 52. Transfer box; 53. Circulation pump. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] The embodiment of the present application discloses an electrically heated graphite reactor, which is used to improve the efficiency of heating materials in the reactor.

[0035] Embodiment 1: Reference Figure 1 and Figure 2 An electrically heated graphite reactor includes a reactor body 1 and a reactor cover 11 fixedly mounted on the top of the reactor body 1 by flanges and bolts. A stirring device 12 is installed inside the reactor body 1 to mix and stir the fluid material inside the reactor body 1. In this embodiment, the reactor body 1 can be made of graphite, and the stirring device 12 is a stirring shaft and stirring blades driven by a motor. A heating component 3 is installed outside the reactor body 1 to heat the reactor body 1 and the material inside it.

[0036] Reference Figure 2 and Figure 3 An extension sleeve 2 is integrally formed inside the kettle body 1, and a plurality of groups of flow guide holes 21 are provided on the inner circumferential wall of the extension sleeve 2 for materials to flow through, and a plurality of groups of flow holes 22 connected to the flow guide holes 21 are provided through the end wall of the extension sleeve 2. The flow holes 22 are distributed at intervals along the circumference of the extension sleeve 2, and adjacent flow holes 22 are distributed staggered along the radial direction of the extension sleeve 2. In this embodiment, all the flow holes 22 on the extension sleeve 2 are respectively located on two groups of circles with different semi-axial sizes on the extension sleeve 2. The inner circumferential walls at both ends of the extension sleeve 2 in the length direction are provided with flow guide notches 23 connected to all the flow holes 22, so that the ends of the flow holes 22 are connected to the inside of the kettle body 1.

[0037] Reference Figure 2 and Figure 3 In this embodiment, the guide holes 21 are arranged in several layers along the axial direction of the extension sleeve 2, and each layer of the guide holes 21 is spaced along the circumferential direction of the extension sleeve 2, and each layer of adjacent guide holes 21 is staggered along the axial direction of the extension sleeve 2. The ends of the guide holes 21 facing the inside of the kettle body 1 are inclined to extend away from the kettle cover 11, and the ends of the guide holes 21 in the layer closest to the kettle cover 11 facing the inside of the kettle body 1 are inclined to extend toward the direction close to the kettle cover 11.

[0038] Reference Figure 2 and Figure 3The outer peripheral wall of the kettle cover 11 is integrally formed with a fixed ring plate 111, and the outer peripheral wall of the kettle body 1 away from the end of the kettle cover 11 is integrally formed with a connecting ring plate 13, and the heating assembly 3 is located between the fixed ring plate 111 and the connecting ring plate 13. A plurality of sets of fasteners 131 are installed between the fixed ring plate 111 and the connecting ring plate 13. In this embodiment, the fastener 131 is composed of a screw rod penetrating the fixed ring plate 111 and the connecting ring plate 13 and a nut threadedly connected to the end of the screw rod, so as to fix and connect the fixed ring plate 111 and the connecting ring plate 13.

[0039] Reference Figure 2 and Figure 3 The heating assembly 3 includes a protective layer 31, a heating element 32, two groups of thermal insulation layers 33, and an outer shell 34, which are arranged between the connecting ring plate 13 and the fixed ring plate 111. In this embodiment, the protective layer 31 is made of carbon fiber, the thermal insulation layer 33 is made of thermal insulation cotton, the heating element 32 is an electric heating wire, and the outer shell 34 is made of aluminum. The protective layer 31 is fixedly installed on the outer peripheral wall of the kettle body 1, wherein one layer of thermal insulation layer 33 is coated on the outer peripheral wall of the protective layer 31, the heating element 32 is spirally wound on the outer peripheral wall of the thermal insulation layer 33, and another group of thermal insulation layers 33 is coated on the outside of the heating element 32. The outer shell 34 is sleeved on the outside of the outermost thermal insulation layer 33, and the outer shell 34 is welded and fixed to the connecting ring plate 13 and the fixed ring plate 111 to protect the thermal insulation layer 33 and the heating element 32.

[0040] The implementation principle of an electrically heated graphite reactor in Example 1 of the present application is: The heating element 32 heats the kettle body 1 and the material inside the kettle body 1, and the stirring device 12 stirs the fluid material inside the kettle body 1, so that the material rotates around the stirring axis inside the kettle body 1. During the rotation of the material, the material in the center of the kettle body 1 continuously moves to the edge of the kettle body 1, and the material at the edge of the kettle body 1 enters the flow hole 22 through the guide hole 21, and finally returns to the kettle body 1 through the end of the flow hole 22, so that the material at the center of the kettle body 1 and the material at the edge pass through the extension sleeve 2 and are continuously exchanged.

[0041] The material inside the kettle body 1 is heated while passing through the extension sleeve 2, so that the material inside the kettle body 1 is evenly heated, thereby improving the heating efficiency and uniformity of the material inside the kettle body 1, and further improving the heating efficiency and heating effect of the kettle body 1 on the material.

[0042] Embodiment 2: The difference between this embodiment 2 and embodiment 1 is that: Figure 4 and Figure 5 A guide part 4 for circulating a heat-conducting medium is installed inside the extension sleeve 2, and a heating component 5 is installed on the kettle body 1 to transport the heated heat-conducting medium inside the guide part 4. In this embodiment, the heat-conducting medium can be heat-conducting oil.

[0043] Reference Figure 4 and Figure 5 The flow guide part 4 includes a flow guide pipe 41, a feed pipe 42, a discharge pipe 43 and an auxiliary rod 44; the flow guide pipe 41 is installed between the extension sleeve 2 and the stirring shaft, and the flow guide pipe 41 is spirally extended along the axial direction of the extension sleeve 2. The auxiliary rod 44 is fixed between the flow guide pipe 41 and the inner circumferential wall of the extension sleeve 2 to fix the flow guide pipe 41. The feed pipe 42 is connected and installed at the end of the flow guide pipe 41 away from the kettle cover 11, and the discharge pipe 43 is detachably connected and installed at the end of the flow guide pipe 41 facing the kettle cover 11 through a docking valve.

[0044] Reference Figure 4 and Figure 5 The heating component 5 includes a circulation pipe 51, a transfer box 52 and a circulation pump 53; the circulation pipe 51 is spirally wound around the outside, the circulation pipe 51 is embedded in the inside of the protective layer 31, and the end of the circulation pipe 51 away from the kettle cover 11 is fixedly connected to the feed pipe 42.

[0045] Reference Figure 4 and Figure 5 The transfer box 52 is welded and installed on the outside of the kettle body 1, and the end of the discharge pipe 43 away from the guide pipe 41 is fixedly connected to the inside of the transfer box 52. The circulation pump 53 is installed on the transfer box 52 through a pipeline, and the output end of the circulation pump 53 is fixedly connected to the end of the circulation pipe 51 away from the feed pipe 42 through a pipeline, so that the heat transfer medium inside the transfer box 52 circulates in the direction of the circulation pipe 51, the feed pipe 42, the guide pipe 41, the discharge pipe 43 and the transfer box 52 in sequence.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electrically heated graphite reaction kettle, comprising a kettle body (1) and a kettle cover (11) arranged on the top of the kettle body (1), wherein a stirring device (12) for stirring materials is arranged inside the kettle body (1); characterized in that: An extension sleeve (2) is arranged inside the kettle body (1); a plurality of groups of flow guide holes (21) for material flow are provided on the inner peripheral wall of the extension sleeve (2); a plurality of groups of flow through holes (22) connected to the flow guide holes (21) are provided through the end wall of the extension sleeve (2); and both ends of the flow through holes (22) are connected to the inside of the kettle body (1); a heating component (3) for heating the kettle body (1) is arranged outside the kettle body (1).

2. An electrically heated graphite reactor according to claim 1, characterized in that: The guide holes (21) are arranged in a plurality of layers at intervals along the axial direction of the extension sleeve (2); the guide holes (21) in each layer are distributed at intervals along the circumference of the extension sleeve (2), and adjacent guide holes (21) in each layer are distributed in an alternating manner along the axial direction of the extension sleeve (2).

3. An electrically heated graphite reactor according to claim 2, characterized in that: The ends of the guide holes (21) facing the interior of the kettle body (1) are arranged obliquely toward the bottom of the extension sleeve (2), and the ends of the guide holes (21) in the layer closest to the kettle cover (11) facing the interior of the kettle body (1) are arranged obliquely toward the direction of the kettle cover (11).

4. An electrically heated graphite reactor according to claim 3, characterized in that: The through-flow holes (22) are distributed at intervals along the circumference of the extension sleeve (2), and adjacent through-flow holes (22) are distributed in a staggered manner along the radial direction of the extension sleeve (2).

5. The electrically heated graphite reactor according to claim 1, characterized in that: The inner peripheral wall of the end of the extension sleeve (2) is provided with a flow guiding notch (23) which is connected to all the flow holes (22).

6. The electrically heated graphite reactor according to claim 1, characterized in that: The heating assembly (3) comprises a protective layer (31), a heating element (32), a heat-insulating layer (33) and an outer shell (34); the protective layer (31) is arranged on the outer wall of the kettle body (1), the heating element (32) is arranged around the outside of the protective layer (31), and the heat-insulating layer (33) is arranged on both sides of the inside and outside of the heating element (32), one group of the heat-insulating layers (33) is used to cover the protective layer (31), and the other group of the heat-insulating layers (33) is used to cover the heating element (32); the outer shell (34) is sleeved on the outside of the heat-insulating layer (33) and the heating element (32) to protect the heat-insulating layer (33).

7. The electrically heated graphite reactor according to claim 1, characterized in that: The circumferential wall of the kettle cover (11) is provided with a fixed ring plate (111); the outside of the kettle body (1) is provided with a connecting ring plate (13); and the heating assembly (3) is located between the fixed ring plate (111) and the connecting ring plate (13); and a plurality of groups of fasteners (131) for fixing and connecting the fixed ring plate (111) and the connecting ring plate (13) are provided between the fixed ring plate (111) and the connecting ring plate (13).

8. The electrically heated graphite reactor according to claim 1, characterized in that: The extension sleeve (2) is provided with a flow guide portion (4) for circulating a heat-conducting medium inside, and the kettle body (1) is provided with a heat supply component (5) for conveying the heat-conducting medium toward the inside of the flow guide portion (4).

9. The electrically heated graphite reactor according to claim 8, characterized in that: The flow guide part (4) comprises a flow guide pipe (41), a feed pipe (42), a discharge pipe (43) and an auxiliary rod (44); the flow guide pipe (41) is arranged between the extension sleeve (2) and the stirring device (12), and the flow guide pipe (41) is extended in a spiral shape along the axial direction of the extension sleeve (2); the feed pipe (42) is connected to one end of the flow guide pipe (41), and the discharge pipe (43) is connected to the other end of the flow guide pipe (41), and the feed pipe (42) and the discharge pipe (43) are both connected to the heating component (5); the auxiliary rod (44) is arranged between the flow guide pipe (41) and the extension sleeve (2) to fix the connection between the flow guide pipe (41) and the extension sleeve (2).

10. An electrically heated graphite reactor according to claim 9, characterized in that: The heating component (5) comprises a circulation pipe (51), a transfer box (52) and a circulation pump (53); the circulation pipe (51) is spirally wound between the kettle body (1) and the heating component (3), and one end of the circulation pipe (51) is connected to the feed pipe (42); the transfer box (52) is arranged outside the kettle body (1), and the discharge pipe (43) is connected to the inside of the transfer box (52); the circulation pump (53) is arranged on the transfer box (52), and the output end of the circulation pump (53) is connected to the end of the circulation pipe (51) away from the feed pipe (42).

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