Catalyst electromagnetic induction heating rotary furnace
By using electromagnetic induction heating technology in catalyst calcining equipment and using alternating magnetic field to heat the catalyst, the problems of large temperature gradient and low thermal efficiency in traditional heating methods are solved, and efficient heating and environmentally friendly catalyst calcining process are achieved.
Patent Information
- Application Number
- CN202420776899.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-15
AI Technical Summary
In traditional catalyst calcining equipment, electric heating or gas heating methods lead to problems such as large temperature gradient and low thermal efficiency utilization.
The catalyst electromagnetic induction heating rotary furnace is used to generate alternating magnetic field heating by induction coil wound around the outer wall of the rotary furnace and connected AC power supply, achieving efficient heating, and controlling the temperature by adjusting the current frequency, combining the inclined rotary furnace body and support transmission structure , improve heating speed and thermal efficiency.
It realizes high thermal efficiency utilization of catalyst roasting, rapid heating, and environmental protection, reduces pollution, and is suitable for continuous production.
Smart Images
Figure CN222279274U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rotary kilns, in particular to a catalyst electromagnetic induction heating rotary kiln. Background Art
[0002] Catalysts have important and extensive applications in chemical production. Catalysts are used in the production of fertilizers, pesticides, and various chemical raw materials. In order to make the catalyst have better performance, the catalyst needs to be calcined to achieve the desired effect.
[0003] At present, catalyst carriers or finished products are mainly heated by continuous roasting rotary kilns, and the heating methods mainly include electric heating and gas heating. Among them, electric heating rotary kilns use resistance materials as electric heating elements for heating, and gas heating mainly uses natural gas for heating. These two methods heat the local rotary furnace body, and then heat the materials in the furnace by heat conduction and radiation, and the energy utilization efficiency is low.
[0004] Therefore, it is urgent to propose corresponding solutions to the problems of large temperature gradient and low thermal efficiency utilization rate in traditional electric heating or gas heating methods when producing catalysts. Utility Model Content
[0005] The utility model aims to overcome the problem that the prior art lacks catalyst carrier roasting equipment with high heat utilization rate, and provides a heating rotary kiln for catalyst roasting, which has the advantages of high heat efficiency utilization rate and fast heating speed.
[0006] In order to achieve the above-mentioned purpose, the utility model provides a catalyst electromagnetic induction heating rotary kiln, including a rotary kiln body for accommodating a catalyst and an electromagnetic heating structure, wherein the electromagnetic heating structure includes an induction coil wound around the outer wall of the rotary kiln body and an AC power supply connected to the induction coil, so as to heat the rotary kiln body through the alternating magnetic field generated by the induction coil.
[0007] In some embodiments, the rotary furnace body includes a feeding part, a heating part, a cooling part, and a discharging part which are connected in sequence, and the induction coil is wound around the outside of the heating part.
[0008] In some embodiments, the heating part includes a preheating section and a constant temperature section, the induction coil includes a first induction coil wound around the outside of the preheating section and a second induction coil wound around the outside of the constant temperature section, and the AC power supply includes a first AC power supply connected to the first induction coil and a second AC power supply connected to the second induction coil.
[0009] In some embodiments, along the direction from the feeding part toward the discharging part, the rotary furnace body is configured to extend downwardly at an inclination angle of 1°-10°.
[0010] In some embodiments, the temperature inside the rotary furnace body is 100°C-1100°C.
[0011] In some embodiments, the frequency of the output current of the AC power source is a medium frequency.
[0012] In some embodiments, a supporting transmission structure for driving the rotary furnace body to rotate is further included, and the supporting transmission structure includes a gear ring arranged on the outer wall of the rotary furnace body and a motor drivingly connected to the gear ring.
[0013] In some embodiments, the rotation speed of the supporting transmission structure is 1 rpm-20 rpm.
[0014] In some embodiments, the supporting transmission structure further comprises a plurality of skeleton bases mounted on the outer wall of the rotary furnace body, and the rotary furnace body is rotatably disposed within the skeleton bases.
[0015] In some embodiments, a heat-insulating layer is further included which is filled between the rotary furnace body and the induction coil.
[0016] Through the above technical scheme, the catalyst is set in the rotary furnace body, and the current is released by the AC power supply and transmitted to the induction coil. The induction coil generates an alternating magnetic field, so that the rotary furnace body close to the induction coil is quickly heated in a short time, and the magnitude of the current in the induction coil can be adjusted by changing the current frequency, which is convenient for efficient calcination of the catalyst, with high thermal efficiency utilization rate, and continuous production. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of a catalyst electromagnetic induction heating rotary kiln according to a preferred embodiment of the utility model.
[0018] Description of Reference Numerals
[0019] 1 Rotary furnace 11 Feeding part
[0020] 12 Heating section 13 Cooling section
[0021] 14 Discharging section 2 Induction coil
[0022] 21 first induction coil 22 second induction coil
[0023] 3 AC power supply 31 First AC power supply
[0024] 32 Second AC power supply 4 Support transmission structure
[0025] 41 Ring gear 42 Motor
[0026] 43 skeleton base 5 insulation layer DETAILED DESCRIPTION
[0027] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.
[0028] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.
[0029] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0030] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.
[0031] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.
[0032] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.
[0033] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.
[0034] In order to overcome the problems of large temperature gradient and low thermal efficiency utilization rate in the conventional electric heating or gas heating method of producing catalysts in the prior art, Figure 1 As shown, the utility model provides a catalyst electromagnetic induction heating rotary kiln, comprising a rotary kiln body 1 for accommodating a catalyst and an electromagnetic heating structure, wherein the electromagnetic heating structure comprises an induction coil 2 wound around the outer wall of the rotary kiln body 1 and an AC power supply 3 connected to the induction coil 2, so as to heat the rotary kiln body 1 through the alternating magnetic field generated by the induction coil 2.
[0035] Specifically, the catalyst is placed in the rotary furnace body 1, the induction coil 2 is wound around the outside of the rotary furnace body 1, and the current is released by the AC power supply 3 and transmitted to the induction coil 2 to generate an alternating magnetic field, so that the rotary furnace body 1 close to the induction coil 2 is quickly heated in a short time, and the magnitude of the current in the induction coil 2 can be adjusted by changing the current frequency, which is convenient for efficient roasting of the catalyst, with high thermal efficiency and utilization rate, and continuous production can be carried out. In addition, electromagnetic induction heating is a clean energy, which effectively protects the environment and reduces pollution.
[0036] Wherein, in some embodiments, Figure 1 As shown, the rotary furnace body 1 includes a feeding part 11, a heating part 12, a cooling part 13 and a discharging part 14 which are connected in sequence, and the induction coil 2 is wound around the outer side of the heating part 12.
[0037] Specifically, Figure 1As shown, the feed part 11 is connected with the feed port, and the catalyst to be calcined can enter the rotary furnace body 1 through the feed port. The heating part 12 is the main part for high-temperature calcination of the catalyst, which is connected with the feed part 11 and is generally located in the middle of the rotary furnace body 1. The cooling part 13 is mainly used to cool down the calcined catalyst and discharge it through the discharge port of the discharge part 14. In order to speed up the heating speed, the induction coil 2 can be wound around the outside of the heating part 12, and the rotary furnace body 1 can be quickly heated by electromagnetic heating to avoid heat loss during heat conduction and improve thermal efficiency utilization.
[0038] Furthermore, combined with Figure 1 As shown, the heating part 12 includes a preheating section 121 and a constant temperature section 122, the induction coil 2 includes a first induction coil 21 wound around the outside of the preheating section 121 and a second induction coil 22 wound around the outside of the constant temperature section 122, and the AC power supply 3 includes a first AC power supply 31 connected to the first induction coil 21 and a second AC power supply 32 connected to the second induction coil 22.
[0039] Specifically, the heating temperatures of the preheating section 121 and the constant temperature section 122 can be controlled separately, that is, different current sizes are released by the first AC power supply 31 and the second AC power supply 32, so that different heating temperatures are present between the preheating section 121 and the constant temperature section 122 of the first induction coil 21 and the second induction coil 22, respectively. It is easy to control and adjust the temperature of the rotary furnace body 1, and the temperature control accuracy is high, which is convenient for the catalyst to be roasted at a reasonable temperature.
[0040] In some embodiments, the rotary furnace body 1 is arranged to extend downwardly in an inclined manner from the feed portion 11 toward the discharge portion 14, and the inclination angle of the rotary furnace body 1 is 1°-10°. It can be understood that the rotary furnace body 1 is arranged as a whole in an inclined manner, and the catalyst carrier enters the furnace body through the feed port of the feed portion 11. As the rotary furnace body 1 rotates, the catalyst carrier is roasted in the rotary furnace body 1 and transported to the discharge portion 14, and then discharged. The rotary furnace body 1 is arranged to have an inclination angle of 1°-10°, which is convenient for discharging from the inside of the rotary furnace body 1.
[0041] In some embodiments, the temperature in the rotary furnace body 1 may be 100° C.-1100° C., so that the catalyst carrier in the rotary furnace body 1 can be fully calcined.
[0042] In some embodiments, the frequency of the output current of the AC power supply 3 is a medium frequency. The AC power supply 3 releases the medium frequency current, which is transmitted to the induction coil 2 to generate an alternating magnetic field, so that the rotary furnace body 1 is heated, thereby being able to roast the catalyst or catalyst carrier in the rotary furnace body 1. In some embodiments, combined with Figure 1As shown, the rotary furnace body 1 further includes a supporting transmission structure 4 for driving the rotary furnace body 1 to rotate. The supporting transmission structure 4 includes a gear ring 41 arranged on the outer wall of the rotary furnace body 1 and a motor 42 drivingly connected to the gear ring 41 .
[0043] Specifically, the gear ring 41 is sleeved on the outer side of the rotary furnace body 1, and a motor 42 is installed at the bottom end of the gear ring 41. The output shaft of the motor 42 can mesh with the gear ring 41, and the rotation of the output shaft can drive the gear ring 41 to rotate. Therefore, the rotary furnace body 1 can be driven to rotate by driving the motor 42, and the motor 42 can be a variable frequency speed regulating motor to meet the requirements of the rotation speed of the rotary furnace body 1 under different working conditions.
[0044] Furthermore, according to actual conditions, the rotation speed of the supporting transmission structure 4 can be 1 rpm-20 rpm, that is, the rotation speed of the rotary furnace body 1 can be 1 rpm-20 rpm.
[0045] And, refer to Figure 1 As shown, the supporting transmission structure 4 also includes a plurality of skeleton bases 43 mounted on the outer wall of the rotary furnace body 1, and the rotary furnace body 1 is rotatably arranged in the skeleton base 43. It can be understood that a through hole is opened in the middle of the skeleton base 43 to facilitate the rotation of the rotary furnace body 1, and the rotary furnace body 1 passes through the through hole, so that the rotary furnace body 1 can be supported by the skeleton base 43, and the rotary furnace body 1 is fixed to avoid shaking and damage.
[0046] In some embodiments, a heat preservation layer 5 is further included which is filled between the rotary furnace body 1 and the induction coil 2. It is understandable that the heat preservation layer 5 is installed between the rotary furnace body 1 and the induction coil 2. When electromagnetic heating is performed by the induction coil 2, the heat preservation layer 5 can insulate the rotary furnace body 1 to prevent heat loss, further improve heat utilization efficiency, and reduce energy waste.
[0047] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.
[0048] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.
Claims
1. A catalyst electromagnetic induction heating rotary kiln, characterized in that: The invention comprises a rotary furnace body (1) for accommodating a catalyst and an electromagnetic heating structure, wherein the electromagnetic heating structure comprises an induction coil (2) wound around the outer wall of the rotary furnace body (1) and an alternating current power source (3) connected to the induction coil (2), so as to heat the rotary furnace body (1) through an alternating magnetic field generated by the induction coil (2).
2. The catalyst electromagnetic induction heating rotary kiln according to claim 1, characterized in that: The rotary furnace body (1) comprises a feeding part (11), a heating part (12), a cooling part (13) and a discharging part (14) which are connected in sequence, and the induction coil (2) is wound around the outside of the heating part (12).
3. The catalyst electromagnetic induction heating rotary kiln according to claim 2, characterized in that: The heating portion (12) comprises a preheating section (121) and a constant temperature section (122); the induction coil (2) comprises a first induction coil (21) wound around the outside of the preheating section (121) and a second induction coil (22) wound around the outside of the constant temperature section (122); and the AC power source (3) comprises a first AC power source (31) connected to the first induction coil (21) and a second AC power source (32) connected to the second induction coil (22).
4. The catalyst electromagnetic induction heating rotary kiln according to claim 2, characterized in that: Along the direction from the feeding part (11) toward the discharging part (14), the rotary furnace body (1) is arranged to extend downwardly at an inclination, and the inclination angle of the rotary furnace body (1) is 1°-10°.
5. The catalyst electromagnetic induction heating rotary kiln according to claim 1, characterized in that: The temperature inside the rotary furnace body (1) is 100°C-1100°C.
6. The catalyst electromagnetic induction heating rotary kiln according to claim 1, characterized in that: The frequency of the output current of the AC power source (3) is a medium frequency.
7. The catalyst electromagnetic induction heating rotary kiln according to claim 1, characterized in that: It also includes a supporting transmission structure (4) for driving the rotary furnace body (1) to rotate, wherein the supporting transmission structure (4) includes a gear ring (41) arranged on the outer wall of the rotary furnace body (1) and a motor (42) connected to the gear ring (41) in a transmission manner.
8. The catalyst electromagnetic induction heating rotary kiln according to claim 7, characterized in that: The rotation speed of the supporting transmission structure (4) is 1 rpm-20 rpm.
9. The catalyst electromagnetic induction heating rotary kiln according to claim 7, characterized in that: The supporting transmission structure (4) further comprises a plurality of skeleton bases (43) mounted on the outer wall of the rotary furnace body (1), and the rotary furnace body (1) is rotatably arranged in the skeleton bases (43).
10. The catalyst electromagnetic induction heating rotary kiln according to claim 1, characterized in that: It also includes a heat-insulating layer (5) filled between the rotary furnace body (1) and the induction coil (2).