Inert particle fluidized bed

Abstract

The utility model relates to an inert particle fluidized bed which comprises a bed body, a porous bed plate is arranged in the bed body, the porous bed plate divides an inner cavity of the bed body into an upper chamber and a lower chamber, and a plurality of inert metal particles are arranged at the bottom of the upper chamber. The bed body is sleeved with an alternating magnetic field generating device used for inductively heating inert metal particles, a nozzle located above the inert metal particles is arranged in the upper cavity and connected with a material conveying device arranged outside the bed body through a pipeline, the bed body is provided with an air inlet communicated with the lower cavity, and the air inlet is communicated with the lower cavity. A gas inlet is formed in the top of the bed body and connected with a gas conveying device through a pipeline, the gas conveying device is used for conveying normal-temperature gas, and a gas outlet is formed in the top of the bed body and connected with a gas-solid separation device through a pipeline; the novel inert particle fluidized bed has the characteristics of low energy consumption and high production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, in particular to an inert particle fluidized bed. Background Art

[0002] The working principle of the inert particle fluidized bed is: liquid material is sprayed into the bed, so that it adheres to the inert particles in the fluidized state to form a thin liquid film. Under the combined action of hot particles and hot air, the liquid film is gradually dehydrated and transformed into a solid film. Due to the continuous collision of fluidized particles, the solid film is effectively impacted and falls off to form a powdery material. This powdery material continues to be dried in the fluidized bed, and is then carried out by the air flow, and is separated by gas and solid through the gas-solid separation device to finally obtain a powdery dry product. The inert particle fluidized bed is suitable for various liquid materials, whether it is a thin solution, suspension, emulsion, or a thicker paste or paste material.

[0003] The inert particle fluidized bed of the prior art has the following problems: 1. The inert particle fluidized bed of the prior art needs to input high-temperature hot air into the bed body to complete drying, and the energy consumption in the process of generating high-temperature hot air is relatively large. 2. When the high-temperature hot air brings the powdered material into the gas-solid separation device for gas-solid separation, the waste gas separated by the gas-solid separation device still carries a large amount of heat. The high-temperature waste gas is directly discharged into the atmosphere, which will cause environmental pollution and waste energy; the powdered dry product separated by the gas-solid separation device also carries a large amount of heat. The high-temperature powdered dry product needs to be cooled before it can be packaged and stored, which reduces the production efficiency of the product. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an inert particle fluidized bed, which has the characteristics of low energy consumption and high production efficiency.

[0005] In order to solve the above technical problems, the utility model provides an inert particle fluidized bed, including a bed body, wherein a porous bed plate is arranged in the bed body, and the porous bed plate divides the inner cavity of the bed body into an upper chamber and a lower chamber, and a plurality of inert metal particles are arranged at the bottom of the upper chamber, and an alternating magnetic field generating device for inductively heating the inert metal particles is sleeved on the bed body, and a nozzle located above the inert metal particles is arranged in the upper chamber, and the nozzle is connected to a feeding device arranged outside the bed body through a pipeline, and an air inlet connected to the lower chamber is opened on the bed body, and the air inlet is connected to the gas feeding device through a pipeline, and the gas feeding device is used to transport gas at normal temperature, and an air outlet is opened on the top of the bed body, and the air outlet is connected to a gas-solid separation device through a pipeline.

[0006] Further preferably, the bed body includes an upper bed body with an opening at the bottom, the lower port of the upper bed body is connected to a drying cylinder in an inverted cone shape through a hose, the alternating magnetic field generating device is sleeved on the drying cylinder, the inert metal particles are located in the drying cylinder, and the lower port of the drying cylinder is connected to a lower bed body with an opening at the top.

[0007] Further preferably, the inert metal particles are spherical; spherical inert metal particles have better fluidization effect.

[0008] Further preferably, the alternating magnetic field generating device comprises an inductor coil sleeved on the bed, and the inductor coil is connected to an alternating current power supply.

[0009] Further preferably, the air delivery device is a blower, and the air inlet of the blower is connected to the air filter through a pipeline.

[0010] Further preferably, the gas-solid separation device is a cyclone separator, and the gas outlet of the gas-solid separation device is connected to the induced draft fan through a pipeline.

[0011] Further preferably, a vibration platform is provided at the bottom end of the bed, and an exciter is provided on the outer side of the bottom of the bed; the vibration platform and the exciter are respectively used to increase the fluidization velocity of the inert metal particles, so as to generate more collisions and frictions between the inert metal particles.

[0012] Further preferably, the feeding device is a material pump, and the feed inlet of the material pump is connected to the stirring and heating material tank through a pipeline.

[0013] The beneficial effects of the utility model are as follows: when working, the alternating magnetic field generating device generates an alternating magnetic field. According to the Faraday electromagnetic induction principle, the inert metal particles of the metal material can be induced to heat up to a preset temperature under the action of the alternating magnetic field. The gas delivery device inputs normal temperature gas into the lower chamber, and the normal temperature gas passes through the holes on the porous bed plate into the upper chamber to make multiple inert metal particles enter a fluidized state. The material delivery device delivers liquid material to the nozzle, and the nozzle sprays the material onto the inert metal particles in the fluidized state to form a thin liquid film. Under the action of the heated inert metal particles, the liquid film is gradually dehydrated and converted into a solid film. Due to the continuous collision and friction between the inert metal particles in the fluidized state, the solid film is effectively impacted and falls off. The powdered material is brought out by the airflow and enters the gas-solid separation device for gas-solid separation, and finally a powdered dry product is obtained; since the gas delivery device inputs room temperature gas into the lower chamber, there is no need to heat the room temperature gas through a heating device, so the energy consumption of the inert particle fluidized bed can be effectively reduced; since the gas delivery device inputs room temperature gas into the lower chamber, the waste gas discharged by the gas-solid separation device will be close to or equal to room temperature, and direct discharge of the waste gas will not cause environmental pollution. The powdered dry product finally obtained by the gas-solid separation device is close to or equal to room temperature, and can be directly packaged and stored without additional cooling, thereby improving the production efficiency of the inert particle fluidized bed; the new inert particle fluidized bed has the characteristics of low energy consumption and high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to clearly illustrate the innovative principle of the utility model and its advantages over the existing fluidized beds of inert particles, possible embodiments are described below by non-limiting examples of applying the principle with the aid of the accompanying drawings. In the drawings:

[0015] Figure 1 It is a schematic diagram of the inert particle fluidized bed of the utility model. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0018] It should be noted that all directional indications in the present embodiment (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0020] like Figure 1 , an inert particle fluidized bed, comprising a bed body 1, wherein a porous bed plate 2 is arranged in the bed body 1, wherein the porous bed plate 2 divides the inner cavity of the bed body 1 into an upper chamber 3 and a lower chamber 4, wherein a plurality of inert metal particles 5 are arranged at the bottom of the upper chamber 3, wherein an alternating magnetic field generating device 6 for inductively heating the inert metal particles 5 is sleeved on the bed body 1, wherein a nozzle 7 located above the inert metal particles 5 is arranged in the upper chamber 3, wherein the nozzle 7 is connected to a feeding device 8 arranged outside the bed body 1 through a pipeline, wherein an air inlet 9 connected to the lower chamber 4 is provided on the bed body 1, wherein the air inlet 9 is connected to a gas delivery device 10 through a pipeline, wherein the gas delivery device 10 is used to deliver gas at normal temperature, wherein an air outlet 11 is provided on the top of the bed body 1, wherein the air outlet 11 is connected to a gas-solid separation device 12 through a pipeline.

[0021] Preferably, except for the inert metal particles 5, the structural part of the inert particle fluidized bed within the radiation range of the alternating magnetic field is made of non-metallic materials, such as high temperature resistant non-metallic materials such as PTFE or PEEK.

[0022] Preferably, the bed body 1 includes an upper bed body 13 with an opening at the bottom, the lower port of the upper bed body 13 is connected to a drying cylinder 15 in an inverted cone shape through a hose 14, the alternating magnetic field generating device 6 is sleeved on the drying cylinder 15, the inert metal particles 5 are located in the drying cylinder 15, and the lower port of the drying cylinder 15 is connected to a lower bed body 16 with an opening at the top; the hose 14 is a corrugated tube, a canvas tube or a plastic tube.

[0023] Preferably, the inert metal particles 5 are spherical; spherical inert metal particles 5 have better fluidization effect.

[0024] Preferably, the alternating magnetic field generating device 6 comprises an inductor coil sleeved on the bed body 1, and the inductor coil is connected to an alternating current power supply.

[0025] Preferably, the air delivery device 10 is a blower, and the air inlet of the blower is connected to the air filter 17 through a pipeline; the air delivery device 10 can also be an air compressor or an axial flow fan.

[0026] Preferably, the gas-solid separation device 12 is a cyclone separator, and the gas outlet of the gas-solid separation device 12 is connected to the induced draft fan 18 through a pipeline; the gas-solid separation device 12 can also be a bag dust collector.

[0027] Preferably, a vibration platform 19 is provided at the bottom end of the bed 1, and a vibrator 20 is provided on the outer side of the bottom of the bed 1; the vibration platform 19 and the vibrator 20 are respectively used to increase the fluidization velocity of the inert metal particles 5, so as to generate more collisions and frictions between the inert metal particles 5.

[0028] Preferably, the feeding device 8 is a material pump, and the feed port of the material pump is connected to the stirring and heating material tank 21 through a pipeline.

[0029] During operation, the alternating magnetic field generating device 6 generates an alternating magnetic field. According to the Faraday electromagnetic induction principle, the inert metal particles 5 made of metal material can be induced to heat up to a preset temperature under the action of the alternating magnetic field. The gas delivery device 10 inputs room temperature gas into the lower chamber 4, and the room temperature gas passes through the holes on the porous bed plate 2 and enters the upper chamber 3 to fluidize the plurality of inert metal particles 5. The material delivery device 8 delivers the liquid material to the nozzle 7, and the nozzle 7 sprays the material onto the inert metal particles 5 in the fluidized state to form a thin liquid film. Under the action of the heated inert metal particles 5, the liquid film is gradually dehydrated and converted into a solid film. Due to the continuous collision and friction between the inert metal particles 5 in the fluidized state, the solid film is effectively impacted and falls off to form a powdery material. , the powdered material is carried out by the airflow and enters the gas-solid separation device 12 for gas-solid separation, and finally a powdered dry product is obtained; since the gas delivery device 10 inputs room temperature gas into the lower chamber 4, there is no need to heat the room temperature gas through a heating device, so the energy consumption of the inert particle fluidized bed can be effectively reduced; since the gas delivery device 10 inputs room temperature gas into the lower chamber 4, the waste gas discharged by the gas-solid separation device 12 will be close to or equal to room temperature, and directly discharging the waste gas will not cause environmental pollution. The powdered dry product finally obtained by the gas-solid separation device 12 is close to or equal to room temperature, and can be directly packaged and stored without additional cooling, thereby improving the production efficiency of the inert particle fluidized bed; the inert particle fluidized bed of this embodiment has the characteristics of low energy consumption and high production efficiency.

[0030] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An inert particle fluidized bed, comprising a bed body (1), characterized in that: The bed body (1) is provided with a porous bed plate (2), the porous bed plate (2) divides the inner cavity of the bed body (1) into an upper chamber (3) and a lower chamber (4), a plurality of inert metal particles (5) are arranged at the bottom of the upper chamber (3), an alternating magnetic field generating device (6) for inductively heating the inert metal particles (5) is sleeved on the bed body (1), a nozzle (7) located above the inert metal particles (5) is arranged in the upper chamber (3), the nozzle (7) is connected to a feeding device (8) arranged outside the bed body (1) through a pipeline, an air inlet (9) communicating with the lower chamber (4) is provided on the bed body (1), the air inlet (9) is connected to a gas feeding device (10) through a pipeline, the gas feeding device (10) is used to feed gas at room temperature, and an air outlet (11) is provided on the top of the bed body (1), the air outlet (11) is connected to a gas-solid separation device (12) through a pipeline.

2. The inert particle fluidized bed according to claim 1, characterized in that: The bed body (1) comprises an upper bed body (13) with an opening at the bottom, the lower port of the upper bed body (13) being connected to an inverted cone-shaped drying cylinder (15) via a hose (14), the alternating magnetic field generating device (6) being sleeved on the drying cylinder (15), the inert metal particles (5) being located in the drying cylinder (15), and the lower port of the drying cylinder (15) being connected to a lower bed body (16) with an opening at the top.

3. The inert particle fluidized bed according to claim 1, characterized in that: The inert metal particles (5) are spherical.

4. The inert particle fluidized bed according to claim 1, characterized in that: The alternating magnetic field generating device (6) comprises an inductor coil sleeved on the bed body (1), and the inductor coil is connected to an alternating current power source.

5. The inert particle fluidized bed according to claim 1, characterized in that: The air delivery device (10) is a blower, and the air inlet of the blower is connected to an air filter (17) via a pipeline.

6. The inert particle fluidized bed according to claim 1, characterized in that: The gas-solid separation device (12) is a cyclone separator, and the gas outlet of the gas-solid separation device (12) is connected to the induced draft fan (18) via a pipeline.

7. The inert particle fluidized bed according to claim 1, characterized in that: A vibration platform (19) is provided at the bottom end of the bed body (1), and a vibration exciter (20) is provided on the outer side of the bottom of the bed body (1).

8. The inert particle fluidized bed according to claim 1, characterized in that: The material delivery device (8) is a material pump, and the feed port of the material pump is connected to the stirring and heating material tank (21) through a pipeline.

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