Vertical granulation device and granulation system

Abstract

The utility model relates to the technical field of granulation, in particular to a vertical granulation device and a granulation system. The utility model aims to solve the problems of tedious maintenance operation and low efficiency of the reaction kettle of the existing granulation device. According to the vertical granulation device, a heating furnace comprises an upper furnace body and a lower furnace body, the lower furnace body comprises two half furnace bodies, the first sides of the two half furnace bodies are rotatably connected, and the second sides of the two half furnace bodies are detachably connected; the two half furnace bodies can open the heating cavity from the side face of the reaction kettle, so that the lower furnace body is separated from the reaction kettle, the reaction kettle is exposed, maintenance of the reaction kettle or the inner side of the lower furnace body and replacement of devices are achieved, and normal operation of the granulation device is guaranteed. Operation is simple, and efficiency is high. Each half furnace body comprises a shell and a first light heat preservation layer arranged on the outer side and the inner side, a heating device is arranged on the inner side of each first light heat preservation layer, the heat preservation effect can be guaranteed, the mass of the half furnace bodies can be reduced, and the two half furnace bodies are convenient to disassemble and assemble.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of granulation, and particularly relates to a vertical granulation device and a granulation system. BACKGROUND

[0002] The granulation device is a device for chemical reaction and granulation process, which is mainly used for preparing suitable granulation materials through chemical reaction, mixing and heating of liquid or powder materials, and then converting the materials into granular products through a granulation system, and is widely used in the pharmaceutical, chemical, food, feed and fertilizer industries.

[0003] In the related art, the granulation device includes a heating furnace on the outside and a reaction kettle on the inside. The heating furnace heats the reaction kettle on the inside. The reaction kettle contains granulation materials to provide space for chemical reaction, mixing and stirring granulation of the materials.

[0004] Since the heating furnace is provided with a traditional material insulation layer, such as a cement insulation layer, an insulation brick or a refractory brick, the structure is heavy. When the reaction kettle is maintained, the corresponding pipeline of the reaction kettle needs to be disassembled, and the reaction kettle needs to be taken out from the heating furnace for maintenance. The operation is complicated and the efficiency is low. CONTENT OF THE INVENTION

[0005] The present application provides a vertical granulation device and a granulation system to solve the technical problem of complicated maintenance operation and low efficiency of the reaction kettle of the existing granulation device.

[0006] In order to solve the above technical problem, the present application adopts the following technical solution:

[0007] The first aspect of the present application provides a vertical granulation device, comprising: a reaction kettle and a heating furnace; the heating furnace comprises: an upper furnace body and a lower furnace body; the upper furnace body and the lower furnace body are butted along the height direction to enclose a heating cavity; the lower furnace body comprises two half furnace bodies, the two half furnace bodies respectively have a first side and a second side opposite to each other in the radial direction of the reaction kettle, the first sides of the two half furnace bodies are rotatably connected, and the second sides of the two half furnace bodies are detachably connected to open or close the heating cavity from the side of the reaction kettle, so that the reaction kettle is covered or exposed; the two half furnace bodies comprise an outer shell, a first lightweight insulation layer and a heating device, the outer shells of the two half furnace bodies are connected, the outer shell is covered on the outside of the first lightweight insulation layer, and the heating device is arranged on one side of the first lightweight insulation layer away from the outer shell; at least part of the reaction kettle is contained in the heating cavity.

[0008] Compared with the prior art, the vertical granulation device provided by the first aspect of the present application has the following advantages:

[0009] The vertical granulation device provided by the application comprises a heating furnace and a reaction kettle, wherein the heating furnace is of a split structure and comprises an upper furnace body and a lower furnace body, the lower furnace body comprises two half furnace bodies, the first sides of the two half furnace bodies are rotatably connected, and the second sides of the two half furnace bodies are detachably connected to close the heating cavity from the side of the reaction kettle, so that the reaction kettle is sleeved in the heating cavity; or the two half furnace bodies can open the heating cavity from the side of the reaction kettle, so that the lower furnace body is separated from the reaction kettle, and the reaction kettle is exposed, thereby realizing the maintenance and replacement of the inside of the reaction kettle or the lower furnace body and ensuring the normal operation of the vertical granulation device. In addition, the two half furnace bodies comprise an outer shell and a first lightweight thermal insulation layer arranged on the inner side of the outer shell, the inner side of the first lightweight thermal insulation layer is provided with a heating device, and the heating device is used for heating the reaction kettle. The arrangement of the first lightweight thermal insulation layer can not only ensure the heat preservation effect, but also reduce the mass of the half furnace body, so that the disassembly and assembly of the two half furnace bodies are convenient, and the arrangement of the outer shell can shield and protect the first lightweight thermal insulation layer and is also conducive to heat preservation.

[0010] As an improvement of the vertical granulation device provided by the application, the first sides of the two half furnace bodies are hinged; and the second sides of the two half furnace bodies are screwed or clamped.

[0011] As an improvement of the vertical granulation device provided by the application, the upper furnace body comprises an upper furnace shell and a second lightweight thermal insulation layer, and the upper furnace shell is wrapped on the outer side of the second lightweight thermal insulation layer.

[0012] As an improvement of the vertical granulation device provided by the application, the upper furnace body is detachably connected with the reaction kettle; and / or at least one of the two half furnace bodies is detachably connected with the reaction kettle.

[0013] As an improvement of the vertical granulation device provided by the application, the lower furnace body is provided with a plurality of first temperature detectors, and the positions of the plurality of first temperature detectors are different in the height direction; the heating device comprises a plurality of heating elements arranged in sequence in the height direction, each heating element is provided with a first temperature detector corresponding to the arrangement area of the heating element, and the heating element is configured to determine the heating parameter according to the temperature detected by the first temperature detector in the arrangement area of the heating element.

[0014] As an improvement of the vertical granulation device provided by the application, the reaction kettle comprises a kettle body, a driving motor and a stirring mechanism, the kettle body is accommodated in the heating cavity, the kettle body is configured to form an accommodation cavity, the top of the accommodation cavity forms a feeding port, and the bottom of the accommodation cavity forms a discharging port; the stirring mechanism is installed in the accommodation cavity, the driving motor is installed on the outer side of the accommodation cavity, the driving motor is connected with the stirring mechanism, and the driving motor is configured to drive the stirring mechanism to rotate.

[0015] As an improvement of the vertical granulation device mentioned above, a plurality of second temperature detectors are arranged on the reactor, and the positions of the plurality of second temperature detectors along the axial direction of the reactor are different; at least one of the second temperature detectors is arranged on the outer wall of the reactor body, and at least one of the second temperature detectors is arranged on the stirring shaft.

[0016] As an improvement of the vertical granulation device mentioned above, the stirring mechanism comprises a stirring shaft, a support rod, an inner layer screw belt, an outer layer screw belt, and a plough assembly, the stirring shaft is in transmission connection with the driving motor; the support rod is fixedly connected with the stirring shaft, and the support rod extends along the radial direction of the stirring shaft; a plurality of support rods are arranged, and part of the support rods are arranged at intervals along the circumferential direction of the stirring shaft to form a support rod group; a plurality of support rod groups are arranged at intervals along the axial direction of the stirring shaft; the inner layer screw belt and the outer layer screw belt are connected with the support rod respectively, and the inner layer screw belt and the outer layer screw belt are arranged in a spiral around the stirring shaft, the outer diameter of the inner layer screw belt is smaller than the outer diameter of the outer layer screw belt; the rotation directions of the inner layer screw belt and the outer layer screw belt are different, the inner layer screw belt is configured to turn up the material in the containing cavity, and the outer layer screw belt is configured to turn down the material in the containing cavity; the plough assembly is installed on the support rod.

[0017] As an improvement of the vertical granulation device mentioned above, the total helical pitch of the inner layer screw belt along the axial direction of the stirring shaft is equal to the total helical pitch of the outer layer screw belt along the axial direction of the stirring shaft, and the starting point of the inner layer screw belt and the starting point of the outer layer screw belt are located on the same support rod group.

[0018] As an improvement of the vertical granulation device mentioned above, the plough assembly comprises a first plough and a second plough, the first plough is installed on one end of the support rod away from the stirring shaft, the second plough is installed between one end of the support rod away from the stirring shaft and the stirring shaft, and the first plough and the second plough are installed on different support rods.

[0019] As an improvement of the vertical granulation device mentioned above, the support rod extends along the radial direction of the stirring shaft, and a plurality of support rods in the support rod group are arranged at intervals along the circumferential direction of the stirring shaft; the number of the support rods in the support rod group is even; the extension direction of the support rod provided with the first plough is the same as the extension direction of the support rod provided with the second plough.

[0020] The second aspect of the present application provides a granulation system, which comprises the vertical granulation device of the first aspect and a cooling kettle, and the discharge port of the reactor of the vertical granulation device is in communication with the inlet of the cooling kettle.

[0021] The granulation system provided by the second aspect of the present application has the same advantages as the vertical granulation device provided by the first aspect of the present application, because it comprises the vertical granulation device provided by the first aspect of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments of the present application or the prior art will be briefly introduced. Obviously, the drawings in the following description are only a part of the embodiments of the present application, and these drawings and the detailed description are not intended to limit the scope of the present application in any way, but to explain the present application to those skilled in the art by referring to specific embodiments. Those skilled in the art can also obtain other drawings without creative effort based on these drawings.

[0023] Figure 1 A structural schematic diagram of a heating furnace provided by an embodiment of the present application is shown in the figure.

[0024] Figure 2 A sectional schematic diagram of a heating furnace provided by an embodiment of the present application is shown in the figure.

[0025] Figure 3 A structural schematic diagram of a reaction kettle provided by an embodiment of the present application is shown in the figure.

[0026] Figure 4 A structural schematic diagram of a stirring mechanism provided by an embodiment of the present application is shown in the figure.

[0027] Figure 5 A structural schematic diagram of a first ploughshare provided by an embodiment of the present application is shown in the figure.

[0028] Figure 6 An end surface schematic diagram of a first ploughshare provided by an embodiment of the present application is shown in the figure.

[0029] Figure 7 A side surface schematic diagram of a first ploughshare provided by an embodiment of the present application is shown in the figure.

[0030] Figure 8 A structural schematic diagram of a second ploughshare provided by an embodiment of the present application is shown in the figure.

[0031] Figure 9 An end surface schematic diagram of a second ploughshare provided by an embodiment of the present application is shown in the figure.

[0032] Figure 10 A side surface schematic diagram of a second ploughshare provided by an embodiment of the present application is shown in the figure.

[0033] Figure 11 A structural schematic diagram of a granulation system provided by an embodiment of the present application is shown in the figure.

[0034] Explanation of reference signs:

[0035] 100: heating furnace; 101: heating cavity; 110: upper furnace body; 111: upper furnace shell; 112: second light insulation layer; 120: lower furnace body; 121: half furnace body; 122: outer shell; 123: first light insulation layer; 124: heating device; 130: first temperature detector;

[0036] 200: reaction kettle; 210: kettle body; 211: containing cavity; 212: feeding port; 213: discharging port; 213: discharging port; 220: driving motor; 230: stirring mechanism; 231: stirring shaft; 232: support rod; 233: inner layer spiral belt; 234: outer layer spiral belt; 240: plough assembly; 241: first plough; 2411: first mounting hole; 2412: first working curved surface; 242: second plough; 2421: second mounting hole; 2422: second working curved surface; 251: first scraper; 252: second scraper; 260: second temperature detector;

[0037] 300: cooling kettle; 400: tail gas cooling tank. DETAILED DESCRIPTION

[0038] In the related art, the granulating device includes a heating furnace on the outside and a reaction kettle on the inside, the heating furnace heats the reaction kettle on the inside, and the reaction kettle contains granulating materials to provide space for chemical reaction, mixing and stirring granulation of the materials.

[0039] In order to ensure the heating performance of the heating furnace, an insulation layer is formed on the outside of the heating furnace. The existing heating furnace forms a cement insulation layer on the outside, which can ensure the insulation effect and has low cost. However, the heating furnace is heavy and inconvenient to disassemble and move.

[0040] The reaction kettle needs to be maintained and inspected from time to time, at which time the corresponding pipeline of the reaction kettle needs to be disassembled and the reaction kettle needs to be taken out of the heating furnace for maintenance and inspection, which is complicated and inefficient to operate.

[0041] The present applicant researches the structure of the vertical granulating device. Since the reaction kettle is disassembled for maintenance, it is complicated and inefficient to operate. Therefore, the heating furnace can be separated from the outside of the reaction kettle to expose the reaction kettle for maintenance.

[0042] The first problem to be solved is the weight of the heating furnace. Since the existing cement insulation layer is relatively heavy and has an integral structure, the disassembly of the heating furnace is not operable. In addition, the insulation performance of the heating furnace is crucial to the heating efficiency.

[0043] To this end, the applicant's R&D personnel use a light thermal insulation layer to insulate the heating furnace, for example, thermal insulation cotton, and set a shell on the outside of the light thermal insulation layer to protect the light thermal insulation layer, so as to reduce the overall weight of the heating furnace.

[0044] After the weight of the heating furnace is reduced, the applicant's R&D personnel design the heating furnace as a split structure to facilitate disassembly of the heating furnace.

[0045] Since the top end and the bottom end of the reaction kettle are respectively provided with pipeline structures and the like, the heating furnace is difficult to operate when disassembled from the top end or the bottom end of the reaction kettle.

[0046] Therefore, the applicant's R&D personnel consider disassembling the heating furnace from the side of the reaction kettle. Specifically, the applicant's R&D personnel design at least part of the heating furnace as two half shells. When the connection between the two half shells is disconnected, at least part of the heating furnace can be separated from the reaction kettle to expose at least part of the reaction kettle, thereby facilitating maintenance.

[0047] However, the two sides of the two half shells are respectively disassembled during the experiment, and the operation is still cumbersome and inefficient.

[0048] Therefore, the applicant's R&D personnel hinge the first side of the two half shells and detachably connect the second side. When the second side of the two half shells is disassembled, the two half shells rotate relative to each other and are separated from the reaction kettle. The operation is simple and helps to improve the maintenance efficiency of the reaction kettle.

[0049] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0050] The vertical granulation device of the embodiments of the present application is a vertical structure.

[0051] In combination with Figure 1 and Figure 2 , the embodiments of the present application provide a vertical granulation device, which comprises a reaction kettle 200 and a heating furnace 100, wherein the reaction kettle 200 is used to hold reaction materials, and the heating furnace 100 is used to heat the reaction kettle 200.

[0052] In some embodiments, the heating furnace 100 comprises an upper furnace body 110 and a lower furnace body 120. The upper furnace body 110 and the lower furnace body 120 are butted along the height direction to enclose a heating cavity 101. The upper furnace body 110 is located above the lower furnace body 120.

[0053] The lower furnace body 120 can be directly connected with the upper furnace body 110, and in this case, the lower furnace body 120 is detachably connected with the upper furnace body 110, so that the lower furnace body 120 can be separated from the outside of the reaction kettle 200.

[0054] Alternatively, the lower furnace body 120 and the upper furnace body 110 are respectively connected with the reaction kettle 200, so that the lower furnace body 120 and the upper furnace body 110 are indirectly connected. In this case, the lower furnace body 120 is detachably connected with the reaction kettle 200, so that the lower furnace body 120 can be detached from the reaction kettle 200.

[0055] In addition, the bottom end of the upper furnace body 110 and the top end of the lower furnace body 120 are in contact, so that the upper furnace body 110 and the lower furnace body 120 jointly form the heating cavity 101.

[0056] At least part of the reaction kettle 200 is contained in the heating cavity 101 to heat the material inside. The heating cavity 101 is a chamber with a top opening and a bottom opening. The top opening is to expose the feed inlet and the power component of the reaction kettle 200. The bottom opening of the heating cavity 101 is to expose the discharge structure of the reaction kettle 200.

[0057] The shape of the heating cavity 101 matches the shape of the kettle body of the reaction kettle 200 to improve the heating effect on the reaction kettle 200. For example, the cross-sectional shape of the heating cavity 101 is circular, and in this case, the cross-sectional shape of the kettle body is also circular, which is convenient for arranging the stirring mechanism inside to stir the material. The vertical cylindrical granulation device is cut by a plane perpendicular to the height direction, and the formed plane is the cross section.

[0058] In some embodiments, the heating cavity 101 includes a cylindrical chamber and a conical chamber. The large-diameter end of the conical chamber is connected with the cylindrical chamber. The discharge port of the reaction kettle 200 is located at the small-diameter end of the conical chamber, which is convenient for the concentrated discharge of the material. The feed inlet of the reaction kettle 200 is located at the end of the cylindrical chamber away from the conical chamber, which has sufficient space for arranging the power structure of the reaction kettle 200.

[0059] In other embodiments, the cylindrical chamber can include multiple sections with different diameters to adapt to the shape of the reaction kettle 200.

[0060] In the embodiments of the present application, the lower furnace body 120 includes two half furnace bodies 121. When the cross section of the lower furnace body 120 is circular, the central angle of the two half furnace bodies 121 is 180°, and the two half furnace bodies 121 jointly form a chamber with a circular cross section. In short, the lower furnace body 120 is divided into two halves along the radial direction, and the two halves are the two half furnace bodies 121.

[0061] In this way, when the two half furnace bodies 121 are opened, the reaction kettle 200 can be taken out of the cavity formed by the lower furnace body 120.

[0062] In the embodiment of the present application, the top ends of the two half furnace bodies 121 are in contact with the bottom end of the upper furnace body 110 to ensure the heating effect. At least one of the two half furnace bodies 121 is directly or indirectly connected to the upper furnace body 110.

[0063] The two half furnace bodies 121 respectively have first sides and second sides opposite to each other in the radial direction of the reaction kettle 200. The first sides of the two half furnace bodies 121 are rotatably connected, and the second sides of the two half furnace bodies 121 are detachably connected to open or close the heating cavity 101 from the side of the reaction kettle 200, so as to cover the reaction kettle 200 or expose the reaction kettle 200.

[0064] The first sides of the two half furnace bodies 121 are rotatably connected, which not only enables the two half furnace bodies 121 to rotate relative to each other to open or close the heating cavity 101, but also eliminates the need to disassemble the first sides of the two half furnace bodies 121, thereby simplifying the maintenance operation of the reaction kettle 200 and improving the maintenance efficiency.

[0065] For example, the first sides of the two half furnace bodies 121 can be connected by a pin shaft to enable the first sides of the two half furnace bodies 121 to be rotatably connected, but the structure is complex.

[0066] For example, the first sides of the two half furnace bodies 121 are rotatably connected by a buckle type rotation connection, but the connection position is prone to disconnection, and rotation is prone to jamming.

[0067] In the embodiment of the present application, the first sides of the two half furnace bodies 121 are hingedly connected. For example, the first sides of the two half furnace bodies 121 are hingedly connected by a hinge, which not only enables the two half furnace bodies 121 to rotate relative to each other, but also has a simple and reliable connection mode.

[0068] To improve the stability of the connection, a plurality of hinges are arranged between the two half furnace bodies 121 and are arranged in the height direction.

[0069] The detachable connection mode of the second sides of the two half furnace bodies 121 can be various. For example, the second sides of the two half furnace bodies 121 can be connected by screws or bolts, which has a simple and stable connection mode. For another example, the second sides of the two half furnace bodies 121 are connected by buckles, which is simple and convenient to disassemble and assemble.

[0070] In some embodiments, the second sides of the two half furnace bodies 121 have a plurality of screwing or buckling positions, and the plurality of screwing or buckling positions are arranged in the height direction to improve the reliability and stability of the connection of the second sides of the two half furnace bodies 121.

[0071] The heating furnace 100 of the embodiment of the present application is of a split structure, comprising an upper furnace body 110 and a lower furnace body 120, the lower furnace body 120 comprising two half furnace bodies 121, the first sides of the two half furnace bodies 121 being rotatably connected, and the second sides of the two half furnace bodies 121 being detachably connected, so as to close the heating cavity 101 from the side of the reaction kettle 200, thereby sleeving the reaction kettle 200 in the heating cavity 101; or, the two half furnace bodies 121 can open the heating cavity 101 from the side of the reaction kettle 200, so as to separate the lower furnace body 120 from the reaction kettle 200, thereby exposing the reaction kettle 200, and realizing the maintenance and replacement of devices inside the reaction kettle 200 or the lower furnace body 120, and ensuring the normal operation of the vertical granulating device.

[0072] In the embodiment of the present application, one side of the two half furnace bodies 121 of the lower furnace body 120 is hinged, and the other side is detachably connected, which is simple to disassemble and assemble, and is conducive to improving the maintenance efficiency of the inside of the reaction kettle 200 or the lower furnace body 120.

[0073] Continuing to refer to Figure 1 and Figure 2 In some embodiments, the two half furnace bodies 121 comprise an outer shell 122, a first lightweight insulation layer 123, and a heating device 124.

[0074] The outer shells 122 of the two half furnace bodies 121 are connected, specifically, the first sides of the two outer shells 122 are rotatably connected, and the second sides of the two outer shells 122 are detachably connected.

[0075] The outer shell 122 is wrapped on the outside of the first lightweight insulation layer 123, and the outer shell 122 can not only provide shielding, protection and mounting structure for the first lightweight insulation layer 123, but also provide structure for the connection of the two half furnace bodies 121.

[0076] For example, the outer shell 122 is a stainless steel shell, such as a 204 stainless steel shell, which has low cost and stable structure.

[0077] The first lightweight insulation layer 123 has a small density, which is lower than that of a cement insulation layer, so that the mass of the lower furnace body 120 can be reduced, and the disassembly and assembly of the lower furnace body 120 is facilitated.

[0078] In the embodiment of the present application, the order of magnitude of the density of the first lightweight insulation layer 123 is lower than that of the cement insulation layer. Generally, the density of the cement insulation layer is in the order of 10 3 kg / m 3 The order of magnitude of the density of the first lightweight insulation layer 123 can be 10 2 kg / m 3 , which is conducive to reducing the weight of the lower furnace body 120 and improving the convenience of disassembly and assembly of the lower furnace body 120.

[0079] For example, the first light thermal insulation layer 123 can be thermal insulation cotton, which has the characteristic of high temperature resistance. The first light thermal insulation layer 123 has the functions of heat insulation and thermal insulation.

[0080] In some embodiments of the present application, the first light thermal insulation layer 123 of the half furnace body 121 is an integrated thermal insulation layer, such as an integrated thermal insulation cotton, which is conducive to improving the thermal insulation effect.

[0081] For example, the first light thermal insulation layer 123 can be ceramic fiber, high-temperature glass cotton, high-temperature mineral cotton, etc.

[0082] Continuing to refer to Figure 2 In the embodiments of the present application, the heating device 124 is arranged on the side of the first light thermal insulation layer 123 away from the shell 122, that is, the heating device 124 is located on the side of the first light thermal insulation layer 123 facing the reaction kettle 200, so that the heat loss of the heating device 124 can be reduced, and the heating effect can be improved.

[0083] For example, the heating device 124 is fixed on the first light thermal insulation layer 123, without the need for additional fixing structure, which is conducive to simplifying the structure of the heating furnace 100; and there is no structural obstruction between the heating device 124 and the reaction kettle 200, which is conducive to heat transfer, thereby improving the heating effect.

[0084] The heating device 124 can be a heating wire, or an electric heating device such as a heating belt.

[0085] In some embodiments, there is a gap between the lower furnace body 120 and the reaction kettle 200, which can provide a space for the arrangement of the heating device 124.

[0086] In the embodiments of the present application, the two half furnace bodies 121 of the lower furnace body 120 are insulated by light thermal insulation layers, which can not only ensure the thermal insulation effect, but also reduce the mass of the lower furnace body 120, facilitate the disassembly and assembly of the lower furnace body 120, and further improve the efficiency of the maintenance and operation of the reaction kettle 200.

[0087] In some embodiments, the upper furnace body 110 includes an upper furnace shell 111 and a second light thermal insulation layer 112, and the upper furnace shell 111 is wrapped on the outside of the second light thermal insulation layer 112. The upper furnace shell 111 can not only provide shielding, protection and mounting structure for the second light thermal insulation layer 112, but also provide mounting structure for the upper furnace body 110.

[0088] The upper furnace shell 111 is directly or indirectly connected with the shells 122 of the two half furnace bodies 121.

[0089] Exemplarily, the upper furnace shell 111 is a metal shell, which has a high hardness and is beneficial to reduce the possibility of deformation of the upper furnace shell 111. For example, the upper furnace shell 111 is a stainless steel shell, such as a 204 stainless steel shell, which has a low cost and a stable structure.

[0090] In some embodiments, the material of the upper furnace shell 111 is the same as that of the outer shell 122, which is beneficial to the appearance design.

[0091] The second lightweight insulation layer 112 has a small density, which is lower than that of the cement insulation layer, so that the mass of the lower furnace body 120 can be reduced, and the disassembly of the lower furnace body 120 is facilitated.

[0092] In the embodiments of the present application, the order of magnitude of the density of the second lightweight insulation layer 112 is lower than that of the cement insulation layer. Generally, the density of the cement insulation layer is in the order of 10 3 kg / m 3 The order of magnitude of the density of the second lightweight insulation layer 112 can be 10 2 kg / m 3 , which is beneficial to reduce the weight of the lower furnace body 120 and improve the convenience of disassembly of the lower furnace body 120.

[0093] Exemplarily, the second lightweight insulation layer 112 can be thermal insulation cotton, which has the characteristics of high temperature resistance. The second lightweight insulation layer 112 has the functions of heat insulation and thermal insulation.

[0094] In some embodiments of the present application, the second lightweight insulation layer 112 of the half furnace body 121 is an integrated insulation layer, such as an integrated thermal insulation cotton, which is beneficial to improve the thermal insulation effect.

[0095] Exemplarily, the second lightweight insulation layer 112 can be ceramic fiber, high-temperature glass cotton, high-temperature mineral cotton, etc.

[0096] In some embodiments, the material of the second lightweight insulation layer 112 is the same as that of the first lightweight insulation layer 123, so as to ensure the consistency of the thermal insulation performance of the heating furnace in the height direction.

[0097] In the embodiments of the present application, the upper furnace body 110 is provided with the second lightweight insulation layer 112, which not only has the same thermal insulation performance as the lower furnace body 120, but also is beneficial to reduce the mass of the upper furnace body 110 and facilitate the disassembly of the upper furnace body 110.

[0098] In some embodiments, the upper furnace body 110 is fixed to the outside of the reaction kettle 200 and cannot be disassembled, so that the connection between the upper furnace body 110 and the reaction kettle 200 is stable and reliable.

[0099] In some embodiments, the upper furnace body 110 is detachably connected with the reaction kettle 200. In this way, the upper furnace body 110 can be separated from the reaction kettle 200, so that the position opposite to the reaction kettle 200 of the upper furnace body 110 is exposed, thereby facilitating maintenance.

[0100] In the reaction kettle 200, an ear is arranged on the kettle body, and the upper furnace body 110 can be detachably connected with the ear. For example, the upper furnace body 110 is connected with the ear arranged on the kettle body by bolts, and the connection is stable and reliable.

[0101] In some embodiments of the present application, at least one of the two half furnace bodies 121 is detachably connected with the reaction kettle 200.

[0102] In the reaction kettle 200, an ear is arranged on the kettle body, and the upper furnace body 110 can be detachably connected with the ear. For example, the upper furnace body 110 is connected with the ear arranged on the kettle body by bolts, and the connection is stable and reliable.

[0103] In some embodiments, one of the half furnace bodies 121 is detachably connected with the reaction kettle 200. In this way, when the lower furnace body 120 is disassembled, only the connection between the half furnace body 121 and the reaction kettle 200 needs to be disassembled, and the operation is relatively simple.

[0104] In some embodiments, the two half furnace bodies 121 are respectively detachably connected with the reaction kettle 200. In this way, the reliability and stability of the connection between the lower furnace body 120 and the reaction kettle 200 can be improved.

[0105] Continuing to refer to Figure 2 In some embodiments, a plurality of first temperature detectors 130 are arranged on the lower furnace body 120, and the positions of the plurality of first temperature detectors 130 in the height direction are different, so as to detect the temperatures at different height positions of the lower furnace body 120.

[0106] In the reaction kettle 200, an ear is arranged on the kettle body, and the upper furnace body 110 can be detachably connected with the ear. For example, the upper furnace body 110 is connected with the ear arranged on the kettle body by bolts, and the connection is stable and reliable.

[0107] For example, the first temperature detector 130 can be provided with three, and the number of the first temperature detector 130 is not limited in the embodiments of the present application.

[0108] In some embodiments, the plurality of first temperature detectors 130 can be arranged at intervals in the height direction. In this way, the plurality of first temperature detectors 130 are arranged in sequence along the generatrix direction of the lower furnace body 120, thereby facilitating the arrangement of the cable.

[0109] In some embodiments of the present application, the heating device 124 comprises a plurality of heating elements arranged in sequence in the height direction, a first temperature detector 130 is arranged in the arrangement region of each heating element, and the heating element is configured to determine a heating parameter according to the temperature detected by the first temperature detector 130 in the arrangement region of the heating element, and the heating parameter can be a heating power, a heating current, etc.

[0110] According to the embodiments of the present application, the heating device 124 is arranged in zones, and the first temperature detector 130 is arranged respectively, so as to realize independent temperature control of the heating elements arranged in each zone, the heat distribution can be adjusted according to the heating requirement of the material, the heat energy utilization efficiency is improved, the service life of the equipment is prolonged, and the energy consumption is saved.

[0111] The heating furnace 100 of the embodiments of the present application adopts a light thermal insulation layer, so as to reduce the weight of the self, save the manufacturing cost, require a smaller operation space, and be more conducive to installation, maintenance and replacement.

[0112] The structure and function of the reaction kettle 200 of the embodiments of the present application will be introduced below in combination with the drawings.

[0113] As shown in FIGS. Figure 3 and Figure 4 In some embodiments, the reaction kettle 200 comprises a kettle body 210, the kettle body 210 is configured to form a containing cavity 211, and the containing cavity 211 is used for containing reaction materials; a feeding port 212 is formed at the top of the containing cavity 211, and a discharging port 213 is formed at the bottom of the containing cavity 211.

[0114] In the embodiments of the present application, the kettle body 210 is contained in the heating cavity 101, the feeding port 212 of the kettle body 210 is exposed to the top opening of the heating cavity 101, so as to facilitate feeding; the discharging port 213 of the kettle body 210 is exposed to the bottom opening of the heating cavity 101, so as to facilitate connection of a discharging structure.

[0115] The reaction kettle 200 of the embodiments of the present application further comprises a driving motor 220 and a stirring mechanism 230, the stirring mechanism 230 is installed in the containing cavity 211, the driving motor 220 is installed outside the containing cavity 211, the driving motor 220 is connected with the stirring mechanism 230, and the driving motor 220 is configured to drive the stirring mechanism 230 to rotate, so as to stir the materials in the containing cavity, and make the materials in the kettle fully mixed.

[0116] The driving motor 220 is located at the top of the kettle body 210, and the installation space is sufficient.

[0117] A transmission assembly, such as a speed reducer, etc., can be further arranged between the driving motor 220 and the stirring mechanism 230.

[0118] In some embodiments, the stirring mechanism 230 comprises a stirring shaft 231 extending in the vertical direction and located at the central position of the kettle body 210. The stirring shaft 231 is in transmission connection with the driving motor 220 and rotates under the driving of the driving motor 220.

[0119] The stirring mechanism 230 further comprises a plurality of support rods 232 fixedly connected with the stirring shaft 231 and extending in the radial direction of the stirring shaft 231.

[0120] The plurality of support rods 232 are arranged in the circumferential direction of the stirring shaft 231 to form a support rod group. For example, the plurality of support rods 232 are uniformly arranged in the circumferential direction of the stirring shaft 231 to form a support rod group, which is conducive to ensuring the uniformity of the force received by the stirring shaft 231.

[0121] For example, the support rod group comprises four support rods 232 uniformly arranged in the circumferential direction of the stirring shaft 231.

[0122] A plurality of support rod groups are arranged in the axial direction of the stirring shaft 231. For example, three support rod groups are arranged in the axial direction of the stirring shaft 231.

[0123] In the embodiments of the present application, the bottom of the kettle body 210 is conical so that the material can be concentrated and discharged through the discharge port 213. In order to adapt to the shape of the kettle body 210, the support rods 232 arranged in the conical portion of the kettle body 210 are shorter in length.

[0124] The stirring mechanism 230 of the embodiments of the present application further comprises at least one inner spiral belt 233 and at least one outer spiral belt 234. The inner spiral belt 233 and the outer spiral belt 234 are respectively connected with the support rods 232 and are arranged in a spiral around the stirring shaft 231. The outer diameter of the inner spiral belt 233 is smaller than the outer diameter of the outer spiral belt 234, and therefore the inner spiral belt 233 is located on the side of the outer spiral belt 234 facing the stirring shaft 231. The rotation directions of the inner spiral belt 233 and the outer spiral belt 234 are different, the inner spiral belt 233 and the outer spiral belt 234 form a convection of the material, the inner spiral belt 233 is configured to overturn the material in the containing cavity 211 upwards, the outer spiral belt 234 is configured to overturn the material in the containing cavity 211 downwards, which ensures sufficient convection of the material in the vertical kettle body 210 and improves the coating granulation effect.

[0125] In some embodiments, the number of inner spiral belts 233 is greater than the number of outer spiral belts 234. In this way, the greater number of inner spiral belts 233 can better overcome the weight of the material, conveying and turning the material upward. The material has a tendency to move downward by gravity; the smaller number of outer spiral belts 234 plays a role in assisting downward conveying and turning the material.

[0126] When the inner spiral belts 233 are provided in multiple, the multiple inner spiral belts 233 are uniformly spaced along the circumference of the stirring shaft 231.

[0127] When the outer spiral belts 234 are provided in multiple, the multiple outer spiral belts 234 are uniformly spaced along the circumference of the stirring shaft 231.

[0128] In some specific implementations, the inner spiral belts 233 are provided in two, and the outer spiral belts 234 are provided in one, so that the inner spiral belts 233 can have sufficient upward conveying and turning force, and the excessive adhesion of the material caused by too many spiral belts can be avoided.

[0129] In the embodiments of the present application, the outer spiral belts 234 are connected to the end of the support rod 232 away from the stirring shaft 231; the connection position of the inner spiral belts 233 to the support rod 232 is located between the outer spiral belts 234 and the stirring shaft 231.

[0130] In some embodiments, the total pitch of the inner spiral belts 233 along the axial direction of the stirring shaft 231 is equal to the total pitch of the outer spiral belts 234 along the axial direction of the stirring shaft 231, and the starting point of the inner spiral belts 233 and the starting point of the outer spiral belts 234 are located on the same support rod group, so that a complete convection channel is formed between the inner spiral belts 233 and the outer spiral belts 234, ensuring the turning and stirring of the material.

[0131] Due to the large action area of the spiral belt, material adhesion and accumulation are prone to occur during the sintering process, resulting in uneven stirring, affecting the granulation fineness and uniformity.

[0132] Therefore, the stirring mechanism 230 of the embodiments of the present application further comprises a plow assembly 240 mounted on the support rod 232, which plays a role in turning and stirring the material in the kettle body 210.

[0133] Compared with the spiral belt, the action area of the plow is smaller, and the material is less likely to adhere during stirring, and the material is more easily scooped up, reducing wall adhesion.

[0134] Although the stirring area of the plow is small, the inner layered material is rolled up and down under the action of the inner spiral belts 233 and the outer spiral belts 234, assisting in stirring, so that the material in the kettle can be fully and uniformly mixed.

[0135] The stirring mechanism 230 of the embodiment of the present application creatively combines the use of the screw belt and the plough blade assembly 240, which can not only utilize the small action area of the plough blade to reduce adhesion in the stirring process, but also utilize the large action area of the screw belt to realize the up-and-down turning of the material and the sufficient mixing of the material. In particular, for the material with high viscosity, the plough blade can reduce the adhesion of the material in the stirring process, and more easily scoop up the material to reduce the wall sticking.

[0136] With reference to the foregoing Figure 4 In some embodiments, the plough blade assembly 240 includes a first plough blade 241 and a second plough blade 242, the first plough blade 241 is installed at one end of the support rod 232 away from the stirring shaft 231, and the second plough blade 242 is installed between one end of the support rod 232 away from the stirring shaft 231 and the stirring shaft 231, and the first plough blade 241 and the second plough blade 242 are installed on different support rods 232.

[0137] The first plough blade 241 has a certain gap with the inner wall surface of the kettle body 210, so that the first plough blade 241 can scoop up the material on the inner wall surface of the kettle body 210, loosen the material, reduce the wall sticking of the material, and make the material more discrete to facilitate the flow circulation, and also facilitate the faster diffusion of the heat of the kettle wall to the material in the kettle to improve the heat utilization rate.

[0138] The second plough blade 242 is located at the middle part of the support rod 232, which turns up the material near the inner layer of the kettle body up and down, loosens it, and makes it more discrete to facilitate the flow circulation of the material, and plays a role in scooping up and stirring the material in the middle part.

[0139] In the embodiment of the present application, the combination of the first plough blade 241, the second plough blade 242, the inner layer screw belt 233 and the outer layer screw belt 234 facilitates the increase of the flowability of the easily adhering material, makes the material heated more evenly, and the reaction more fully.

[0140] In some embodiments, the position of the second plough blade 242 on the support rod 232 is located between the inner layer screw belt 233 and the outer layer screw belt 234, so that the second plough blade 242 can stir the material between the inner layer screw belt 233 and the outer layer screw belt 234 to reduce the adhesion between the materials.

[0141] In some embodiments, the support rod 232 extends along the radial direction of the stirring shaft 231, and the plurality of support rods 232 in the support rod group are uniformly and spacedly arranged along the circumferential direction of the stirring shaft 231; the number of the support rods 232 in the support rod group is even;

[0142] The extending direction of the support rod 232 provided with the first plough 241 is the same as the extending direction of the support rod 232 provided with the second plough 242, that is, the support rod 232 provided with the first plough 241 is opposite to the support rod 232 provided with the second plough 242 along the radial direction of the stirring shaft 231, so that the support rod 232 can simultaneously install the first plough 241, the second plough 242, the inner layer spiral belt 233 and the outer layer spiral belt 234.

[0143] When a plurality of support rods 232 are included in the support rod group, a plurality of first ploughs 241 and a plurality of second ploughs 242 are respectively provided to improve the turnover stirring effect.

[0144] In combination Figures 5 to 7 In some embodiments, the first plough 241 is provided with a first mounting hole 2411, and the first mounting hole 2411 is fixedly connected with the stirring shaft 231. The first plough 241 is provided with a first working curved surface 2412 to turn over the material.

[0145] In some embodiments, the first working curved surface 2412 is provided with two, and the two first working curved surfaces 2412 are symmetrical about the first center line O1. Among them, Figure 6 It is a view obtained by observing the first plough 241 from the end surface of the first mounting hole 2411.

[0146] In this way, the first working curved surface 2412 can more effectively cover more areas in the kettle body 210 during stirring, which is beneficial to reduce the stirring dead angle; moreover, the two relatively symmetrical first working curved surfaces 2412 can generate greater shear force during stirring, which is beneficial to break and disperse the agglomerated material particles, especially to improve the dispersibility of the easily adhered material. Moreover, such arrangement can not only ensure sufficient contact area to make the material mixing more sufficient, but also can reduce the material adhesion caused by large area.

[0147] In combination Figures 8 to 10 In some embodiments, the second plough 242 is provided with a second mounting hole 2421, and the second mounting hole 2421 is fixedly connected with the stirring shaft 231. The second plough 242 is provided with a second working curved surface 2422 to turn over the material.

[0148] In some embodiments, the second working curved surface 2422 is provided with two, and the two second working curved surfaces 2422 are symmetrical about the second center line O2. Among them, Figure 9 It is a view obtained by observing the second plough 242 from the end surface of the second mounting hole 2421.

[0149] In this way, the second working curved surface 2422 can effectively cover more areas in the kettle body 210 during stirring, so as to reduce the dead angle of stirring. In addition, the two symmetrical second working curved surfaces 2422 can generate greater shear force during stirring, so as to break and disperse the agglomerated material particles, and especially improve the dispersibility of the easily adhered material. In addition, the sufficient contact area can be ensured, so that the material mixing is more sufficient, and the material adhesion caused by the large area can be reduced.

[0150] In the embodiment of the present application, the first scraper 251 is installed on the support rod 232 at the top of the stirring shaft 231, and is used to scrape the material on the top inner wall of the kettle body 210.

[0151] In the embodiment of the present application, the first scraper 251 is installed on the support rod 232 at the top of the stirring shaft 231, and is used to scrape the material on the top inner wall of the kettle body 210.

[0152] In the embodiment of the present application, the second scraper 252 is installed on the support rod 232 at the bottom of the stirring shaft 231, and is used to scrape the material on the top inner wall of the kettle body 210.

[0153] In the embodiment of the present application, the first scraper 251 is installed on the support rod 232 at the top of the stirring shaft 231, and is used to scrape the material on the top inner wall of the kettle body 210.

[0154] In some embodiments of the present application, in combination with Figure 3 and Figure 4 The plurality of second temperature detectors 260 are arranged on the reaction kettle 200, and the positions of the plurality of second temperature detectors 260 along the axial direction of the reaction kettle 200 are different, so that the temperatures at different heights of the reaction kettle 200 can be detected. In this way, by setting the temperature error, the material in the reaction kettle 200 is heated more uniformly, so that the reaction of the material in the reaction kettle 200 is more sufficient. In addition, the partition heating of the heating device is matched, which is beneficial to reduce the heating time, fully utilize the heat energy, and reduce the energy consumption.

[0155] At least one of the second temperature detectors 260 is arranged on the outer wall of the kettle body 210, and at least one of the second temperature detectors 260 is arranged on the stirring shaft 231.

[0156] For example, three second temperature detectors 260 are arranged on the reaction kettle 200, two second temperature detectors 260 at the top and the bottom are arranged on the stirring shaft 231, and the second temperature detector 260 in the middle is arranged on the outer wall of the kettle body 210 of the reaction kettle 200.

[0157] In the embodiment of the present application, the stirring shaft 231 is a hollow shaft, and the second temperature detector 260 arranged on the stirring shaft 231 is arranged through the cable in the cavity in the stirring shaft 231.

[0158] In combination Figure 11 The granulation system provided by the embodiment of the present application comprises the vertical granulation device and the cooling kettle 300, the discharge port of the reaction kettle 200 of the vertical granulation device is communicated with the inlet of the cooling kettle, and the cooling kettle is used for cooling the material.

[0159] The structure, function and effect of the vertical granulation device provided by the embodiment are the same as those of the above-mentioned embodiments, and details can be referred to the above-mentioned embodiments, which will not be repeated here.

[0160] In some embodiments, the granulation system further comprises a tail gas cooling tank 400, which is connected with the top end of the reaction kettle 200 and used for cooling the high-temperature tail gas generated by the reaction kettle 200 to a safe temperature.

[0161] In the above description, the description of the terms “one embodiment”, “some embodiments”, “an example”, “a specific example” or “some examples” means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0162] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A vertical granulation device, characterized by, The application relates to a reaction kettle and a heating furnace. The heating furnace comprises an upper furnace body and a lower furnace body; the upper furnace body and the lower furnace body are butted along the height direction to form a heating cavity. The lower furnace body comprises two half furnace bodies, each of which has a first side and a second side opposite to each other in the radial direction of the reaction kettle; the first sides of the two half furnace bodies are rotatably connected; and the second sides of the two half furnace bodies are detachably connected to open or close the heating cavity from the side of the reaction kettle, so that the reaction kettle is covered or exposed. The two half furnace bodies comprise an outer shell, a first light insulation layer and a heating device; the outer shells of the two half furnace bodies are connected, and the outer shells are covered on the outer side of the first light insulation layer; and the heating device is arranged on the side of the first light insulation layer away from the outer shell. At least part of the reaction kettle is contained in the heating cavity. The first sides of the two half furnace bodies are hinged; and the second sides of the two half furnace bodies are screwed or clamped.

2. The vertical granulation apparatus according to claim 1, characterized by The upper furnace body comprises an upper furnace shell and a second light insulation layer; and the upper furnace shell is covered on the outer side of the second light insulation layer.

3. The vertical granulation apparatus according to claim 1, wherein The upper furnace body is detachably connected with the reaction kettle; and / or at least one of the two half furnace bodies is detachably connected with the reaction kettle.

4. The vertical granulation apparatus according to any one of claims 1 to 3, characterized by A plurality of first temperature detectors are arranged on the lower furnace body and are located at different positions in the height direction.

5. The vertical granulation apparatus according to any one of claims 1 to 3, characterized by The heating device comprises a plurality of heating elements arranged in sequence in the height direction; each heating element is arranged in an area corresponding to a first temperature detector; and the heating element is configured to determine a heating parameter according to the temperature detected by the first temperature detector in the arrangement area of the heating element. The reaction kettle comprises a kettle body, a driving motor and a stirring mechanism; the kettle body is contained in the heating cavity; the kettle body is configured to form a containing cavity; the top of the containing cavity forms a feeding port; the bottom of the containing cavity forms a discharging port; the stirring mechanism is installed in the containing cavity; the driving motor is installed on the outer side of the containing cavity; the driving motor is connected with the stirring mechanism; and the driving motor is configured to drive the stirring mechanism to rotate.

6. The vertical granulation apparatus according to any one of claims 1 to 3, characterized by The stirring mechanism comprises a stirring shaft, a support rod, an inner layer screw belt, an outer layer screw belt and a plough blade assembly; the stirring shaft is in transmission connection with the driving motor; the support rod is fixedly connected with the stirring shaft and extends in the radial direction of the stirring shaft; a plurality of support rods are arranged, part of which are arranged in the circumferential direction of the stirring shaft to form a support rod group; and a plurality of support rod groups are arranged in the axial direction of the stirring shaft.

7. The vertical granulation apparatus according to claim 6, wherein The inner layer screw belt and the outer layer screw belt are respectively connected with the support rod; the inner layer screw belt and the outer layer screw belt are arranged in a spiral around the stirring shaft; the outer diameter of the inner layer screw belt is smaller than that of the outer layer screw belt; the rotation directions of the inner layer screw belt and the outer layer screw belt are different; the inner layer screw belt is configured to turn up the material in the containing cavity; and the outer layer screw belt is configured to turn down the material in the containing cavity. The plough blade assembly is installed on the support rod. ​ 8. The vertical granulation apparatus according to claim 7, wherein The coulter assembly comprises a first coulter and a second coulter, the first coulter is installed at one end of the support rod away from the stirring shaft, and the second coulter is installed between one end of the support rod away from the stirring shaft and the stirring shaft, and the first coulter and the second coulter are installed on different support rods.

9. The vertical granulation apparatus according to claim 7, wherein The total helical pitch of the inner layer helical belt along the axial direction of the stirring shaft is equal to the total helical pitch of the outer layer helical belt along the axial direction of the stirring shaft, and the starting point of the inner layer helical belt and the starting point of the outer layer helical belt are located on the same support rod group.

10. A granulation system characterized by, The vertical granulation device comprises a reaction kettle and a cooling kettle, and the outlet of the reaction kettle of the vertical granulation device is communicated with the inlet of the cooling kettle.

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