Micro-vibration fluidized bed reactor and system

Abstract

The invention discloses a micro-vibration fluidized bed reactor and a micro-vibration fluidized bed system. The micro-vibration fluidized bed reactor comprises a shell and at least one vibration element positioned in the shell, the at least one vibrating element is used for vibrating particles in an area in which the vibrating element is positioned in the micro-vibrating fluidized bed reactor. By adopting the technical scheme, the high vibration energy consumption caused by the fact that the whole system of a traditional vibrated fluidized bed is arranged on a vibration table and the limitation on the weight, the scale and the height of the reactor are avoided, and the local accurate vibration of the fluidized bed reactor is realized; particle agglomeration or particle deposition dispersion can be carried out in a specific area of the fluidized bed reactor, and the fluidization quality control and optimization efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of chemical equipment, and in particular to a fluidized bed reactor and a system, and in particular to a micro-vibration fluidized bed reactor and a system. Background Art

[0002] Fluidized bed is a multiphase reactor widely used in the fields of petroleum, chemical industry, metallurgy, food, pharmaceuticals, etc. Its core principle is to overcome the gravity of particles through the drag of airflow, so that powder particles are suspended and move violently, showing the characteristics of fluid, thereby greatly enhancing the gas-solid contact efficiency and achieving efficient heat transfer, mass transfer and chemical reaction. However, the action of airflow alone cannot achieve uniform fluidization of systems such as ultrafine powders, high-temperature viscous powders, large particles, and wet particles in a fluidized bed. For this reason, various different technologies are used to enhance the fluidization process. Among them, the vibrating fluidized bed uses mechanical vibration to apply external energy to the system, which can improve the fluidization quality of particle systems that cannot be uniformly fluidized by airflow alone, control the classification and mixing of different particle systems during the fluidization process, and enhance heat and mass transfer. It has been applied to a series of fluidization processes such as drying, coating, and chemical reactions.

[0003] However, vibrating fluidized bed devices usually require the fluidized bed to be placed on a vibration table to apply vertical or lateral vibrations so that the entire system is in a vibrating state. In fact, in most vibrating fluidized bed applications, the role of vibration is only to break the flow dead zone caused by particle agglomeration and particle deposition through the mechanical energy applied by vibration, thereby enhancing particle mixing, improving fluidization quality, and promoting uniform fluidization. Obviously, in these applications, it is not necessary to place the entire fluidized bed on a vibration table. In addition, the traditional vibrating fluidized bed reactor configuration has the following obvious disadvantages: 1) The vibration table has limited support, and the weight and scale of the reactor are greatly restricted; 2) Due to the relationship between the stability of the system and the position of the center of gravity, the reactor can often only be designed as a short and fat structure; 3) Vibrating large devices is extremely energy-consuming.

[0004] Therefore, there is an urgent need to develop a new vibrating fluidized bed reactor that does not require the entire system to be placed on a vibration table but can still promote uniform fluidization of particles. Summary of the invention

[0005] The present invention provides a micro-vibration fluidized bed reactor and system, which precisely applies mechanical vibration to areas of the fluidized bed reactor where particle agglomeration and particle deposition are likely to form, thereby breaking up particle agglomeration and particle deposition in local areas, improving vibration efficiency and effect, and saving energy consumption.

[0006] According to a first aspect of the present invention, there is provided a micro-vibration fluidized bed reactor, comprising: a shell and at least one vibration element located inside the shell;

[0007] At least one of the vibration elements is used to vibrate particles in the micro-vibration fluidized bed reactor in the area where the vibration element is located.

[0008] Optionally, at least one of the vibration elements is disposed on the surface of the built-in load-bearing platform;

[0009] The load-bearing platform includes at least one of a shell inner wall, a distribution plate, a baffle internal component or a heat exchanger.

[0010] Optionally, the number of the vibration elements disposed on the surface of the load-bearing platform is negatively correlated with the absolute value of the slope of the surface of the load-bearing platform.

[0011] Optionally, the vibration parameter of the vibration element disposed on the surface of the load-bearing platform is negatively correlated with the absolute value of the slope of the surface of the load-bearing platform;

[0012] The vibration parameters include vibration frequency and / or vibration amplitude.

[0013] Optionally, the vibration element includes at least one of a pneumatic vibrator, a piezoelectric ceramic vibrator and a vibration motor.

[0014] Optionally, the vibration frequency of the vibration element is 1 Hz to 100 kHz, and the vibration amplitude is 0.1 μm to 30 mm.

[0015] Optionally, the vibration element is installed inside the shell in the form of an embedded or detachable flange.

[0016] Optionally, the number of the vibration elements is 1 to 1000.

[0017] According to a second aspect of the present invention, there is also provided a micro-vibration fluidized bed system, comprising a collection module, a control module and the micro-vibration fluidized bed reactor provided by any embodiment of the present invention;

[0018] The collection module is located inside the micro-vibration fluidized bed reactor and is used to collect particle concentration parameters inside the micro-vibration fluidized bed reactor;

[0019] The control module is electrically connected to the acquisition module and the vibration element, and is used to receive the particle concentration parameter and control a vibration parameter of at least one of the vibration elements according to the particle concentration parameter; the vibration parameter includes a vibration frequency and / or a vibration amplitude.

[0020] Optionally, the acquisition module includes at least one acquisition unit;

[0021] The collecting unit is arranged corresponding to the vibration element, and is used to collect the particle concentration parameter around the vibration element;

[0022] Wherein, the particle concentration parameter includes at least one of pressure drop, temperature or solid content;

[0023] The control module is used to control the vibration parameter of the vibration element corresponding to the collection unit according to the particle concentration parameter.

[0024] In an embodiment of the present invention, at least one vibration element is disposed inside the shell of the fluidized bed reactor, and the vibration element is used to vibrate the fluidized bed reactor in the area where the vibration element is located, thereby achieving precise vibration of the local part of the fluidized bed reactor, accurately improving the local fluidization state, and dispersing particle agglomeration or particle deposition in a specific area of ​​the fluidized bed reactor, thereby enhancing the fluidization effect. At the same time, the use of local micro-vibration elements in the micro-vibration fluidized bed reactor of the present invention avoids a series of problems caused by placing the entire system on a vibration table in a traditional vibrating fluidized bed. Therefore, the present invention can replace the existing vibrating fluidized bed reactor in a more energy-saving manner in terms of enhancing particle mixing, improving fluidization quality, promoting uniform fluidization, etc., and break through the limitations of traditional vibrating fluidized bed reactors in terms of weight, scale, and height, and has broad application prospects.

[0025] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a structural schematic diagram of a micro-vibration fluidized bed reactor provided by an embodiment of the present invention;

[0028] Figure 2 is a schematic structural diagram of another micro-vibration fluidized bed reactor provided by an embodiment of the present invention;

[0029] Figure 3 is a schematic structural diagram of another micro-vibration fluidized bed reactor provided by an embodiment of the present invention;

[0030] Figure 4 is a schematic structural diagram of another micro-vibration fluidized bed reactor provided by an embodiment of the present invention;

[0031] Figure 5 is a structural schematic diagram of another micro-vibration fluidized bed reactor provided by an embodiment of the present invention;

[0032] Figure 6 It is a structural schematic diagram of a micro-vibration fluidized bed system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0036] Fluidized bed reactor (FBR) is a device that suspends solid particles through gas and presents a fluid-like flow state. Its core principle is that when the fluid flow rate reaches a critical value, the particle bed changes from a fixed state to a fluidized state, thereby achieving efficient mass transfer, heat transfer and chemical reaction. During the working process, especially in fluidized systems involving ultrafine powders, high-temperature viscous powders, large particles, wet particles, etc., the fluidized bed reactor may not be able to fully disperse the particles or cause particle aggregation due to flow dead corners caused by the internal structure, resulting in material agglomeration or deposition, causing loss of flow, reducing the contact area between the reactants, reducing the reaction efficiency, causing incomplete particle reaction, affecting the yield and quality of the product, and the system cannot operate stably. In order to overcome the above problems in the prior art, the fluidized bed reactor is usually installed as a whole on a vibration table, and the mechanical vibration of the vibration table is transmitted to the entire reactor, so that the fluidized bed reactor vibrates globally, improving the particle fluidity and fluidization effect as a whole. However, this vibration mode also brings a series of problems. On the one hand, the overall weight of the fluidized bed reactor is relatively large, which not only poses a challenge to the supporting force of the vibration table, but also makes the energy consumption of the vibration process relatively large. In addition, considering the relationship between the stability of the entire system and the position of the center of gravity, the fluidized bed reactor can often only be designed as a short and fat structure, which limits the structure and function of the fluidized bed reactor itself. On the other hand, the homogenous vibration of the fluidized bed reactor cannot specifically solve the flow dead zone with serious particle aggregation, the vibration efficiency is low, and the effect of improving the local particle aggregation of the internal structure of the fluidized bed reactor by vibration is not good.

[0037] In order to solve the above problems, Figure 1 Schematic diagram of the structure of a micro-vibration fluidized bed reactor provided by an embodiment of the present invention. Figure 1 As shown, a micro-vibration fluidized bed reactor 100 provided in an embodiment of the present invention includes: a shell 1 and at least one vibration element 2 located inside the shell 1; the at least one vibration element 2 is used to vibrate particles in the micro-vibration fluidized bed reactor 100 where the vibration element 2 is located.

[0038] Specifically, the shell 1 is the main structure of the micro-vibration fluidized bed reactor 100, and is usually made of high temperature resistant and corrosion resistant materials to adapt to different reaction conditions. The shell 1 is used to accommodate the reaction materials (particles) and gas, and provide a closed reaction space for the reaction materials and gas. During the fluidized bed reaction, the solid particles form a fluidized state under the action of the gas. In this state, the gas-solid two phases can be fully contacted, which greatly improves the reaction efficiency. The existence of the shell ensures that the reaction materials and gases will not leak into the external environment, and also prevents external impurities from entering the reaction system, ensuring the purity and stability of the reaction. At least one vibration element 2 is arranged inside the shell 1, and the vibration element 2 can be installed in a specific area inside the shell 1 according to actual needs. These specific areas are usually determined according to the characteristics of the reaction materials, the requirements of the reaction process and the structural characteristics of the fluidized bed. For example, setting a vibration element in an area where the reaction materials are easy to gather or fluidize poorly can effectively improve the local fluidization state. The vibration element 2 generates vibration by mechanical, electromagnetic or pneumatic means to apply vibration to the particle bed in a specific area, making the particle bed in the area where the vibration element 2 is located looser, destroying the agglomeration, channeling and sedimentation between the particles, and allowing the gas to be more evenly distributed in the gaps between the particles, thereby improving the mass transfer efficiency between the gas and solid phases.

[0039] This embodiment arranges at least one vibration element inside the shell of the fluidized bed reactor, and utilizes the vibration element to vibrate the fluidized bed reactor in the area where the vibration element is located, thereby achieving precise vibration of the local part of the fluidized bed reactor, accurately improving the local fluidization state, and can disperse particle agglomerations or particle deposition in specific areas of the fluidized bed reactor, thereby improving the optimization efficiency of the fluidization effect and avoiding unnecessary energy waste.

[0040] Based on the above embodiments, Figure 2 is a schematic structural diagram of another micro-vibration fluidized bed reactor provided in an embodiment of the present invention, Figure 3 Schematic diagram of another micro-vibration fluidized bed reactor provided by an embodiment of the present invention. Figures 2 to 3 At least one vibration element 2 is arranged on the surface of a built-in load-bearing platform 3; the load-bearing platform 3 includes at least one of a shell inner wall 31, a distribution plate 32, a baffle inner component 33 or a heat exchanger 34.

[0041] Specifically, the load-bearing platform 3 is the installation base of the vibration element 2, which is located inside the fluidized bed reactor and can provide reliable support for the vibration element 2, so that the vibration element 2 can be fixedly installed on the surface of the built-in load-bearing platform 3, and the vibration generated by itself is applied to the load-bearing platform 3, thereby transmitting the vibration energy to the particle bed layer on the surface of the load-bearing platform 3, breaking the adhesion between particles, preventing particle aggregation, and improving the fluidization effect and fluidization quality of the vicinity of the load-bearing platform 3 where the vibration element 2 is set. At the same time, the vibration of the load-bearing platform 3 can also enhance the contact between particles and gas, improve mass transfer and heat transfer efficiency, and can optimize and control the fluidization quality for different specific areas of different load-bearing platforms by adjusting the vibration intensity, frequency and direction of each vibration element 2, realize differentiated vibration, and improve the flexibility of local fluidization optimization.

[0042] Furthermore, the load-bearing platform 3 includes at least one of the inner wall 31 of the shell, the distribution plate 32, the baffle internal component 33 or the heat exchanger 34. The distribution plate 32 is a porous plate located at the bottom of the fluidized bed reactor, which is used to evenly distribute the gas entering the reactor. The gas is evenly distributed to the entire bed layer through the small holes on the distribution plate 32. When the gas passes through the holes or nozzles on the distribution plate, it will be dispersed into many small bubbles or airflows. These small bubbles rise in the particle bed layer, drive the particles to move, and promote the uniform fluidization of the particle bed layer; the baffle internal component 33 is usually installed in a specific area inside the fluidized bed reactor, and its shape, size and installation angle are determined according to the design purpose and fluid mechanics requirements of the fluidized bed reactor, for example Figure 3 As shown, the baffle internal components 33 may include transverse baffle internal components 331 and vertical baffle internal components 332 to guide the flow direction of particles and gases so that they form a specific circulation path in the fluidized bed reactor, control the residence time and reaction path of the materials, and by reasonably setting the position and angle of the baffle internal components 33, the particles and gases can move along a predetermined trajectory to avoid short circuit and back mixing, thereby improving the reaction efficiency; the heat exchanger 34 is installed inside the reactor in a specific arrangement to maximize the use of space and reduce the impact on the fluidized bed flow pattern. Its main function is to achieve heat transfer, maintain the heat balance in the fluidized bed reactor, transfer heat from the hot fluid to the cold fluid, or vice versa, provide heat or remove heat according to the needs of the reaction, and ensure that the reaction is carried out under optimal temperature conditions. Since the structures of the shell inner wall 31, the distribution plate 32, the baffle inner component 33 or the heat exchanger 34 themselves may have flow dead zones for the materials in the fluidization process, resulting in particle agglomeration or particle deposition in the flow dead zones, a vibration element 2 can be set on the surface of at least one of the shell inner wall 31, the distribution plate 32, the baffle inner component 33 or the heat exchanger 34 according to actual conditions to enhance particle mixing, improve fluidization quality and promote uniform fluidization of materials.

[0043] For example, Figure 2 As shown, the vibration element 2 can be arranged on the surface of the inner wall 31 of the shell, the distribution plate 32 and the heat exchanger 34, thereby affecting the movement of particles at the inner wall 31 of the shell, the distribution plate 32 and the heat exchanger 34, improving the fluidization quality and promoting uniform fluidization of the material; or Figure 3 As shown, the vibration element can be arranged on the surface of the transverse baffle inner member 331 and the vertical baffle inner member 332, thereby affecting the movement of particles at the shell inner wall 31, the distribution plate 32 and the heat exchanger 34, or generating small-sized bubbles around, thereby improving the fluidization quality and promoting uniform fluidization of the material. It should be noted that the above only exemplifies the arrangement of the vibration element 2 and does not serve as a specific limitation on this embodiment. The embodiment of the present invention does not specifically limit the arrangement position of the vibration element on the load-bearing platform 3.

[0044] This embodiment arranges at least one vibration element on the surface of the built-in load-bearing platform to accurately break the adhesion between particles on the surface of the load-bearing platform, prevent particles from aggregating or depositing on the load-bearing platform, improve fluidization quality, and increase the flexibility of optimizing the fluidization process.

[0045] Optional, Figure 4 is a schematic diagram of the structure of another micro-vibration fluidized bed reactor provided in an embodiment of the present invention, with reference to Figure 4 The number of vibration elements 2 arranged on the surface of the load-bearing platform 3 is negatively correlated with the absolute value of the slope of the surface of the load-bearing platform 3 .

[0046] Specifically, the slope of the load-bearing platform surface 3 refers to the angle between the platform surface and the horizontal plane. The greater the absolute value of the slope, the more inclined the platform surface is. Due to the uneven force on the inclined surface, the particles are more likely to slide or roll due to gravity; that is, the greater the degree of inclination, the stronger the particle fluidity on its surface, the more obvious the natural flow trend, and the particles are more likely to slide down the slope and accumulate on the surface of the load-bearing platform 3 with a small inclination; the smaller the absolute value of the slope, the closer the platform surface is to the horizontal. Due to the insufficient flow power of the particles themselves, the particles have poor fluidity on the surface close to the horizontal, and are prone to local accumulation or retention. Based on this, the number of vibration elements 2 that can be set on the surface of the load-bearing platform 3 is negatively correlated with the absolute value of the slope of the surface of the load-bearing platform 3. By increasing the number of vibration elements 2, the vibration effect on the load-bearing platform 3 with a small slope is strengthened, helping the particles on its surface to be better dispersed and mixed, and improving the fluidization quality. On the surface of the load-bearing platform 3 with a large slope, fewer vibration elements 2 are set to meet the fluidization requirements of the particles on its surface, avoiding energy waste. By setting the number of vibration elements 2 and the absolute value of the slope of the surface of the load-bearing platform 3 to be negatively correlated, the vibration energy can be more reasonably allocated based on the actual situation of whether the particles are prone to deposition, the vibration elements 2 can be arranged in a differentiated manner, unnecessary vibration energy consumption can be reduced, energy utilization efficiency can be improved, and the flexibility of optimizing the overall fluidization effect can be improved.

[0047] For example, Figure 4 As shown, compared with the inner wall 31 of the shell, the surface of the distribution plate 32 and the upper surface of the heat exchanger 34 have a smaller slope. Due to the smaller inclination, the flow power of the particles on the surface of the distribution plate 32 and the upper surface of the heat exchanger 34 is insufficient, resulting in poor fluidity of the particles on the nearly horizontal surface, and local accumulation or retention is prone to occur. Therefore, two vibration elements 2 are respectively set on the surface of the distribution plate 32 and the upper surface of the heat exchanger 34, and one vibration element 2 is set on the inner wall 31 of the shell, while ensuring the fluidization optimization effect, reducing unnecessary vibration energy consumption, improving energy utilization efficiency and optimizing the flexibility of the overall fluidization effect.

[0048] Optional, continue to refer to Figure 4 The vibration parameters of the vibration element 2 arranged on the surface of the load-bearing platform 3 are negatively correlated with the absolute value of the slope of the surface of the load-bearing platform 3; the vibration parameters include vibration frequency and / or vibration amplitude.

[0049] Specifically, the slope of the load-bearing platform surface 3 refers to the angle between the platform surface and the horizontal plane. The larger the absolute value of the slope, the more inclined the platform surface is. Due to the uneven force on the inclined surface, the particles are more likely to slide or roll due to gravity; that is, the greater the degree of inclination, the stronger the fluidity of the particles on its surface, and the more obvious the natural flow trend. The particles are more inclined to slide down the slope and accumulate on the surface of the load-bearing platform 3 with a small inclination; the smaller the absolute value of the slope, the closer the platform surface is to the horizontal, and due to the insufficient flow power of the particles themselves, the particles have poor fluidity on the nearly horizontal surface, and are prone to local accumulation or retention. Based on this, the vibration parameters on the surface of the load-bearing platform 3 can be set to be negatively correlated with the absolute value of the slope of the surface of the load-bearing platform 3, wherein the vibration parameters include vibration frequency and / or vibration amplitude, and the vibration effect on the load-bearing platform 3 with a small slope can be enhanced by enhancing the vibration frequency and / or vibration amplitude of the vibration element 2, thereby helping the particles on its surface to be better dispersed and mixed, thereby improving the reaction efficiency, and setting the vibration frequency and / or vibration amplitude of the vibration element 2 on the surface of the load-bearing platform 3 with a large slope to be smaller can meet the fluidization requirements of the particles on its surface, thereby avoiding energy waste. By setting the vibration parameters of the vibration element 2 to be negatively correlated with the absolute value of the slope of the surface of the load-bearing platform 3, the vibration energy can be more reasonably allocated in combination with the actual situation of whether the particles are prone to deposition, and the vibration elements 2 can be arranged in a differentiated manner to reduce unnecessary vibration energy consumption, improve energy utilization efficiency, and optimize the flexibility of the overall fluidization effect.

[0050] For example, Figure 4 As shown, compared with the inner wall 31 of the shell, the surface of the distribution plate 32 and the upper surface of the heat exchanger 34 have a smaller slope. Due to the smaller inclination, the flow power of the particles on the surface of the distribution plate 32 and the upper surface of the heat exchanger 34 is insufficient, resulting in poor fluidity of the particles on the nearly horizontal surface, and local accumulation or retention is prone to occur. Therefore, the vibration frequency of the vibration element 2 respectively set on the surface of the distribution plate 32 and the upper surface of the heat exchanger 34 can be 20Hz, and the vibration amplitude can be 2mm, and the vibration frequency of the vibration element 2 set on the inner wall 31 of the shell can be 10Hz, and the vibration amplitude can be 1mm, which ensures the fluidization optimization effect while reducing unnecessary vibration energy consumption, improving energy utilization efficiency and optimizing the flexibility of the overall fluidization effect.

[0051] Optional, Figure 5 is a structural schematic diagram of another micro-vibration fluidized bed reactor provided by an embodiment of the present invention, with reference to Figure 5 The vibration element 2 includes at least one of a pneumatic vibrator 21 , a piezoelectric ceramic vibrator 22 and a vibration motor 23 .

[0052] Specifically, the pneumatic vibrator 21 uses compressed air as a power source to push the internal piston or diaphragm to produce reciprocating motion, thereby driving the load-bearing platform to vibrate. According to actual needs, the frequency and amplitude of vibration can be accurately controlled by adjusting the pressure and flow of compressed air, so that on the load-bearing platform 3 with different slopes, the required vibration parameters can be flexibly achieved to adapt to different reaction processes and particle characteristics. The piezoelectric ceramic vibrator 22 uses the piezoelectric effect to generate mechanical vibration when an alternating electric field is applied. It has the characteristics of small size, fast response speed and high precision. It is suitable for the load-bearing platform 3 with high requirements for vibration accuracy and frequency stability. It can achieve small vibration amplitude (usually at the micrometer or even nanometer level) and high frequency (up to several thousand hertz or even higher) vibration, which is very beneficial for finely controlling the material transfer and reaction process on the surface of the particles. The vibration motor 23 generates centrifugal force by driving the eccentric wheel to rotate through an electric motor, thereby forming vibration. The vibration motor 23 can be directly installed on the load-bearing platform 3 or fixed on the fluidized bed reactor through a simple bracket. It does not require complex installation procedures and auxiliary equipment, and is easy to integrate.

[0053] Optional, continue to refer to Figure 5 The vibration frequency of the vibration element 2 is 1 Hz to 100 kHz, and the vibration amplitude is 0.1 μm to 30 mm.

[0054] Specifically, when the absolute value of the slope of the load-bearing platform 3 is small, the particles flow relatively slowly and are prone to accumulation or blockage. At this time, a vibration mode with a higher frequency (such as 10Hz-100Hz) and / or a larger vibration amplitude (such as 10μm-30mm) can be selected to generate enough energy to break the accumulation structure of the particles. When the absolute value of the slope of the load-bearing platform 3 is large, the particles tend to slide down quickly, and the particle accumulation formed is relatively mild. At this time, the use of a lower frequency (such as 1Hz-10Hz) and / or a smaller vibration amplitude (such as 0.1μm-10μm) can achieve fine control of particle movement and avoid energy waste. In addition, the vibration direction of the vibration element 2 can be set according to actual conditions, and can be continuous vibration or intermittent pulse vibration to improve the flexibility of fluidization quality optimization.

[0055] Optional, continue to refer to Figure 5 , the number of vibration elements is 1 to 1000.

[0056] Specifically, for a small fluidized bed reactor, such as a laboratory-scale small reactor, the area of ​​the load-bearing platform 3 and the particle processing capacity are both small. At this time, a small number (such as 1-10) of vibration elements 2 can meet the needs. A small number of vibration elements 2 are easy to control and adjust, and the vibration mode can be quickly changed according to the experimental requirements. These vibration elements 2 can accurately control the movement of particles on the slope change platform. In a larger-scale industrial fluidized bed reactor, such as a large reactor in chemical production, the load-bearing platform 3 has a large area and a large number of particles. At this time, a large number (such as 10-1000) of vibration elements 2 are required to ensure that the vibration energy is evenly distributed on the entire platform. By reasonably arranging these vibration elements 2, the particles can be subjected to appropriate vibration in areas with different slopes. Using multiple vibration elements 2, the load-bearing platform 3 of the large fluidized bed reactor can be divided into different areas, and the vibration parameters can be independently controlled according to the slope of each area, thereby improving the flexibility and efficiency of fluidization quality optimization.

[0057] For example, Figure 5 As shown, a pneumatic vibrator 21 is arranged on the surface of the inner wall 31 of the shell, and the vibration frequency can be 1-100Hz, the vibration amplitude can be 0.1-10mm, and the number can be 1-100; the heat exchanger 34 is relatively fragile, and a piezoelectric ceramic vibrator 22 is arranged on its surface, and the vibration frequency can be 1-100kHz, the vibration amplitude can be 0.1-2000μm, and the number can be 1-1000. A vibration motor 23 is arranged on the surface of the distribution plate 32, and the vibration frequency can be 1-100Hz, the vibration amplitude can be 0.1-30mm, and the number can be 1-100. It should be noted that the above only exemplarily shows the setting method of the vibration element 2, and it does not serve as a specific limitation on this embodiment. The embodiment of the present invention does not specifically limit the relationship between the type of vibration element and the setting position, quantity and vibration parameters.

[0058] Optional, continue to refer to Figure 1 The vibration element 2 is installed inside the housing 1 through an embedded or detachable flange.

[0059] Specifically, the embedded or removable flange installation can make the vibration element 2 and the shell 1 form an integral structure, so that when the fluidized bed reactor works in a complex environment, even if it is subjected to large external forces and accelerations, the vibration element 2 can remain stable and will not loosen or shift due to vibration, thereby ensuring the stable transmission of vibration. Among them, the embedded installation can effectively reduce the leakage of vibration energy to the surrounding environment, ensuring that the vibration energy is mainly concentrated in the particle area processed by the vibration element; and the removable flange installation method is convenient for the installation and removal of the vibration element 2. The staff can easily remove the vibration element 2 from the inside of the shell 1 for maintenance or replacement by removing the flange. When the vibration element 2 fails, this installation method can quickly repair it, reduce the downtime of the equipment, and improve production efficiency.

[0060] Exemplarily, the vibration element 2 can be installed on the surface of the load-bearing platform inside the shell 1 in the form of an embedded or removable flange. The load-bearing platform can provide reliable support for the vibration element 2, so that the vibration element 2 can be fixedly installed on the surface of the built-in load-bearing platform, and the vibration generated by itself is applied to the load-bearing platform, thereby transmitting the vibration energy to the particle bed on the surface of the load-bearing platform, breaking the adhesion between the particles, preventing the particles from aggregating, and improving the fluidization effect and fluidization quality of the vicinity of the load-bearing platform where the vibration element 2 is provided. It should be noted that the above only exemplarily shows the position where the vibration element 2 can be installed inside the shell 1, and does not serve as a specific limitation on this embodiment. On the basis of realizing that the vibration element 2 is fixedly connected to the inside of the shell 1, those skilled in the art can adjust the installation position of the vibration element 2 inside the shell 1 according to actual conditions, and the embodiment of the present invention does not make specific limitations on this.

[0061] Based on the same inventive concept, Figure 6 is a structural schematic diagram of a micro-vibration fluidized bed system provided by an embodiment of the present invention, such as Figure 6 As shown, a micro-vibration fluidized bed system provided by an embodiment of the present invention includes a collection module 110, a control module 120 and a micro-vibration fluidized bed reactor 100; the collection module 110 is located inside the micro-vibration fluidized bed reactor 100, and is used to collect particle concentration parameters inside the micro-vibration fluidized bed reactor 100; the control module 120 is electrically connected to the collection module 110 and the vibration element 2, and is used to receive the particle concentration parameters and control the vibration parameters of at least one vibration element 2 according to the particle concentration parameters; the vibration parameters include vibration frequency and / or vibration amplitude.

[0062] Specifically, the acquisition module 110 is located inside the fluidized bed reactor 100, and can obtain the particle concentration parameters in real time. The control module 120 timely adjusts the vibration frequency and / or vibration amplitude of the vibration element 2 according to the particle concentration parameters. By reasonably adjusting the vibration parameters, it can adapt to different local accumulation and agglomeration conditions of the particles. According to the instructions of the control module 120, the vibration element 2 increases the vibration frequency and / or amplitude when the particles have a tendency to precipitate, so that the particles are resuspended and evenly distributed, ensuring that the particle concentration at the vibration element 2 remains in an appropriate range, and can quickly adapt to and maintain a stable particle motion state. When the particle concentration is different, the micro-vibration fluidized bed system can be adjusted in real time to ensure that the fluidized reaction is sufficient and efficient.

[0063] This embodiment adjusts the vibration parameters of the vibration element in real time according to the particle concentration parameters, which can effectively stabilize the particles when the deposition or agglomeration conditions change, and timely adjust the vibration mode of the vibration element 2, thereby stabilizing the movement state of the particles, ensuring the stable operation of the fluidized bed, and preventing problems such as poor fluidization quality and low efficiency caused by unstable particle movement.

[0064] Optional, continue to refer to Figure 6 The collection module 110 includes at least one collection unit; the collection unit is set corresponding to the vibration element 2, and is used to collect particle concentration parameters around the vibration element 2; wherein the particle concentration parameters include at least one of pressure drop, temperature or solid content; the control module 120 is used to control the vibration parameters of the vibration element 2 corresponding to the collection unit according to the particle concentration parameters.

[0065] Specifically, the acquisition unit may include a pressure sensor, a temperature sensor or a concentration sensor. Each acquisition unit cooperates closely with the corresponding vibration element 2 and can accurately obtain the particle concentration parameters of the local area around the vibration element 2, including pressure drop, temperature or solid content, etc. The control module 120 adjusts the vibration parameters of the corresponding vibration element 2 in a targeted manner based on these precise data, thereby providing a uniform fluidized state for the micro-vibration fluidized bed reactor 100, increasing the contact area of ​​the reactants, improving the reaction rate and conversion rate, and improving the flexibility of the vibration of the vibration element, thereby effectively ensuring production continuity and product quality.

[0066] Exemplarily, the acquisition unit may include an image acquisition device such as an endoscope, and the control module 120 obtains image information around the vibration element 2 through the image acquisition device, and then identifies the area ratio of the particles in the image, determines the particle concentration around the vibration element 2, and adjusts the vibration parameters of the vibration element 2 in real time according to the particle concentration.

[0067] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A micro-vibration fluidized bed reactor, characterized in that: include: a housing and at least one vibrating element located inside the housing; At least one of the vibration elements is used to vibrate particles in the micro-vibration fluidized bed reactor in the area where the vibration element is located.

2. The micro-vibration fluidized bed reactor according to claim 1, characterized in that: At least one of the vibration elements is disposed on the surface of the built-in load-bearing platform; The load-bearing platform includes at least one of a shell inner wall, a distribution plate, a baffle internal component or a heat exchanger.

3. The micro-vibration fluidized bed reactor according to claim 2, characterized in that: The number of the vibration elements disposed on the surface of the load-bearing platform is negatively correlated with the absolute value of the slope of the surface of the load-bearing platform.

4. The micro-vibration fluidized bed reactor according to claim 2, characterized in that: The vibration parameter of the vibration element disposed on the surface of the load-bearing platform is negatively correlated with the absolute value of the slope of the surface of the load-bearing platform; The vibration parameters include vibration frequency and / or vibration amplitude.

5. The micro-vibration fluidized bed reactor according to claim 1, characterized in that: The vibration element includes at least one of a pneumatic vibrator, a piezoelectric ceramic vibrator and a vibration motor.

6. The micro-vibration fluidized bed reactor according to claim 1, characterized in that: The vibration frequency of the vibration element is 1 Hz to 100 kHz, and the vibration amplitude is 0.1 μm to 30 mm.

7. The micro-vibration fluidized bed reactor according to claim 1, characterized in that: The vibration element is installed inside the shell in the form of an embedded or detachable flange.

8. The micro-vibration fluidized bed reactor according to claim 1, characterized in that: The number of the vibration elements is 1 to 1000.

9. A micro-vibration fluidized bed system, characterized in that: It comprises a collection module, a control module and the micro-vibration fluidized bed reactor as claimed in any one of claims 1 to 8; The collection module is located inside the micro-vibration fluidized bed reactor and is used to collect particle concentration parameters inside the micro-vibration fluidized bed reactor; The control module is electrically connected to the acquisition module and the vibration element, and is used to receive the particle concentration parameter and control a vibration parameter of at least one of the vibration elements according to the particle concentration parameter; the vibration parameter includes a vibration frequency and / or a vibration amplitude.

10. The micro-vibration fluidized bed system according to claim 9, characterized in that: The acquisition module includes at least one acquisition unit; The collecting unit is arranged corresponding to the vibration element, and is used to collect the particle concentration parameter around the vibration element; Wherein, the particle concentration parameter includes at least one of pressure drop, temperature or solid content; The control module is used to control the vibration parameter of the vibration element corresponding to the collection unit according to the particle concentration parameter.

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