Dual-channel fluid-driven rotating packed bed and application thereof

Abstract

This invention discloses a dual-channel fluid-driven rotary packed bed, comprising a shell, a rotor assembly, a shell fluid channel, a rotating shaft fluid channel, and a guide plate. The rotor assembly includes a rotating shaft, a drive impeller, a turntable, and packing. Both ends of the rotating shaft are housed in bearing seats, which are fixed to the inner sidewall of the shell. The drive impeller is fixedly connected to the rotating shaft. The turntable is fixedly connected to the rotating shaft and located at the center of the rotating shaft. The packing is fixed to the edge of the turntable. A rotating shaft fluid channel is provided within the rotating shaft. A shell fluid channel is provided on the sidewall of the shell. A liquid outlet is provided at the top of the shell. One end of the guide plate is fixed to the shell, and a gap exists between the other end and the rotating shaft; this gap faces inward towards the drive impeller. This invention's dual-channel fluid-driven rotary packed bed employs dual-channel symmetrical fluid drive, which can counteract the axial force of the fluid drive, improving the stability and safety of equipment operation.

Description

Technical Field

[0001] This invention relates to the field of rotary packed bed technology. More specifically, it relates to a dual-channel fluid-driven rotary packed bed and its applications. Background Technology

[0002] Rotating packed beds simulate a hypergravity field through centrifugal force, making them a highly efficient process intensifier. By using a high-speed rotating rotor, the liquid phase is dispersed into micro-elements, increasing the surface area for mass transfer and thus efficiently enhancing processes such as reaction, separation, and mixing. Therefore, they are widely used in waste gas / wastewater treatment, distillation, and nanoparticle preparation.

[0003] Traditional rotary packed beds use an electric motor to drive the rotor, which increases the overall size of the equipment and the complexity of the process. However, by using the energy of the fluid itself to power the rotor, the equipment size can be further reduced and the overall safety of the reactor can be improved while retaining the efficient mass transfer and mixing capabilities of traditional rotary packed beds. At the same time, the development of a dual-channel fluid-driven rotary packed bed for large liquid volume scenarios can counteract axial forces, thereby further improving the stability and safety of equipment operation. Summary of the Invention

[0004] The first technical problem this invention aims to solve is to provide a dual-channel fluid-driven rotary filling bed. This rotary filling bed employs dual-channel symmetrical fluid drive, which can counteract the axial force of the fluid drive, thereby improving the stability and safety of equipment operation.

[0005] The second technical problem to be solved by the present invention is to provide an application of the above-mentioned dual-channel fluid-driven rotary filling bed.

[0006] To solve the first technical problem mentioned above, the invention adopts the following technical solution:

[0007] A dual-channel fluid-driven rotary packed bed includes a shell, a rotor assembly, a shell fluid channel, a rotor shaft fluid channel, and a guide plate;

[0008] The rotor assembly includes a rotating shaft, a drive impeller, a turntable, packing, and a bearing housing;

[0009] Both ends of the rotating shaft are disposed in bearing seats, and the bearing seats are fixed to the inner sidewall of the housing;

[0010] The drive impeller is fixedly connected to the rotating shaft;

[0011] The turntable is fixedly connected to the rotating shaft and is located at the center of the rotating shaft;

[0012] The filler is fixed at the edge of the turntable;

[0013] The rotating shaft is provided with a rotating shaft fluid channel;

[0014] The shell sidewall is provided with a shell fluid channel;

[0015] The top of the shell is provided with a liquid outlet;

[0016] One end of the guide plate is fixed to the housing, and there is a gap between the other end and the rotating shaft; this gap faces the drive impeller inward.

[0017] Preferably, the surface shape of the guide plate includes a flat plate or a streamlined shape.

[0018] Preferably, the guide plate and the inner wall of the housing form a Venturi structure.

[0019] Preferably, the rotating shaft has a hollow structure and a through hole is provided on the side wall of the rotating shaft.

[0020] Preferably, the filler is a plastic filler.

[0021] Preferably, the driving impeller blade is a straight blade, a curved blade, or a helical blade; more preferably, the driving impeller blade is a perforated curved blade.

[0022] Preferably, the shell fluid channel on the side wall of the shell is provided with two channels, which are arranged facing each other on the left and right.

[0023] Preferably, the drive impeller is fixedly connected to the rotating disk.

[0024] To solve the second technical problem mentioned above, the present invention adopts the following technical solution. :

[0025] Application of a dual-channel fluid-driven rotating packed bed in multiphase flow reaction and absorption processes.

[0026] Preferably, the multiphase flow includes gas-liquid and liquid-liquid.

[0027] Preferably, the application includes the following specific steps:

[0028] 1) The liquid enters the rotating packed bed device through the liquid channels on both sides of the shell, and drives the impeller in the direction of flow through the gap between the guide plate and the rotating shaft;

[0029] 2) The impeller rotates under the action of liquid force, which drives the rotating shaft to rotate, the rotating shaft drives the turntable to rotate, and the turntable drives the packing to rotate;

[0030] 3) The two fluids enter the rotating packed bed through the fluid channel of the rotating shaft. They are efficiently dispersed by the dual shearing action of the rotating impeller and the packing, thereby enhancing the mass transfer and reaction process.

[0031] Preferably, in step 3), the pressure of the fluid is >500 Pa.

[0032] Preferably, in step 3), the fluid includes gas, liquid, or supercritical fluid.

[0033] Any range described in this invention includes the endpoint, any value between the endpoints, and any subrange consisting of the endpoint or any value between the endpoints.

[0034] Unless otherwise specified, all raw materials used in this invention can be obtained commercially, and the equipment used in this invention can be conventional equipment in the relevant field or refer to existing technology in the relevant field.

[0035] Compared with the prior art, the present invention has the following beneficial effects. :

[0036] 1) The dual-channel fluid-driven rotary filling bed designed in this invention makes full use of the energy of the conveying fluid itself, and provides power through fluid drive. It can operate efficiently without the need for a motor, effectively reducing energy consumption and achieving energy saving and emission reduction.

[0037] 2) The dual-channel fluid-driven rotary packed bed designed in this invention counteracts the axial force of the rotating shaft through a symmetrical liquid inlet arrangement, which has high operational stability and safety.

[0038] 3) The dual-channel fluid-driven rotary packed bed designed in this invention disperses the fluid through a rotating impeller and packing, which can efficiently enhance the mass transfer / mixing process. Attached Figure Description

[0039] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] Figure 1 This is a schematic diagram of the structure of the dual-channel fluid-driven rotary packed bed of the present invention;

[0041] Figure 2 This is a flowchart illustrating the experimental process of applying the dual-channel fluid-driven rotating packed bed of the present invention to a water-air system.

[0042] Figure 3 This invention relates to a dual-channel fluid-driven rotary packed bed applied to a water-carbon dioxide system process.

[0043] Figure 4 This is a process flow diagram of the application of the Venturi structure dual-channel fluid-driven rotating packed bed of the present invention to the ozone degradation of p-nitrophenol system in water;

[0044] Figure 5 This is a process flow diagram of the porous blade structure dual-channel fluid-driven rotary packed bed of the present invention applied to the ozone degradation of p-nitrophenol system in water;

[0045] Figure 6This is a flowchart illustrating the experimental application of the Venturi structure dual-channel fluid-driven rotating packed bed of the present invention in a kerosene-water system.

[0046] Figure 7 for Figure 1 Side view;

[0047] Figure 8 for Figure 1 A cross-sectional view of the rotor assembly. Detailed Implementation

[0048] To more clearly illustrate the present invention, the following description, in conjunction with preferred embodiments and accompanying drawings, further explains the invention. Similar components in the drawings are indicated by the same reference numerals. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of the present invention.

[0049] Various cross-sectional views of embodiments of the present invention are shown in the accompanying drawings. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0050] Example 1

[0051] like Figure 1 , Figure 7 and Figure 8 As shown, a dual-channel fluid-driven rotary filling bed includes a housing 10, a rotor assembly 20, a housing fluid channel 30, a rotor shaft fluid channel 40, and a guide plate 50.

[0052] The rotor assembly 20 includes a rotating shaft 21, a drive impeller 22, a turntable 23, packing 24, and a bearing housing 25;

[0053] Both ends of the rotating shaft 21 are disposed in the bearing housing 25, and the bearing housing 25 is fixed on the inner side wall of the housing 10;

[0054] The drive impeller 22 is fixedly connected to the rotating shaft 21;

[0055] The turntable 23 is fixedly connected to the rotating shaft 21 and is located at the center of the rotating shaft 21;

[0056] The filler 24 is fixed at the edge of the turntable;

[0057] A fluid channel 40 is provided inside the rotating shaft 21;

[0058] The shell 10 is provided with a shell fluid channel 30 on its side wall;

[0059] The top of the housing 10 is provided with a liquid outlet 52;

[0060] One end of the guide plate 50 is fixed to the housing 10, and there is a gap 51 between the other end and the rotating shaft 21; this gap 51 faces the drive impeller 22 inward. When liquid material enters from the inlet of the fluid channel 30 in the housing, it impacts the drive impeller 22 through the gap 51, providing power for the rotation of the drive impeller 22;

[0061] The surface shape of the guide plate 50 includes a flat plate type or a streamlined type;

[0062] The guide plate 50 and the inner wall of the housing 10 form a Venturi structure;

[0063] The rotating shaft 21 has a hollow structure, and a through hole 211 is provided on the side wall of the rotating shaft 21;

[0064] The filler 24 is a plastic filler;

[0065] The blades of the drive impeller 22 are straight blades, curved blades, or helical blades; more preferably, the blades of the drive impeller are perforated curved blades.

[0066] The shell fluid channel on the side wall of the shell is provided with two channels, which are arranged facing each other on the left and right.

[0067] The drive impeller is fixedly connected to the rotating disk.

[0068] The working principle of the rotary filling bed of this invention is as follows:

[0069] One stream of fluid enters the rotating packed bed device through the rotating shaft fluid channel 40, while two other streams of liquid enter the rotating packed bed device through the inlet 31 of the two shell fluid channels 30. The symmetrically entering fluids drive the impeller 22 to rotate, which can also counteract the axial force. The impeller 22 drives the packing 24 to rotate through the rotating shaft 21 and the turntable 23. The liquids entering from the rotating shaft fluid channel 40 and the shell fluid channels 30 are cut and broken by the rotating impeller 22 and the packing 24, increasing the specific surface area and thus enhancing the mass transfer / mixing process.

[0070] Example 2

[0071] See Figure 2 As shown, a dual-channel fluid-driven rotating packed bed is applied to a water-air experimental system process:

[0072] 0.2m 3 / h Air is delivered into the rotating packed bed device by the fan 250 through the fluid channel of the rotating shaft, 1m3 Water at a rate of / h is pumped into the rotary packed bed device through the inlet of the fluid channel in the shell by pump 150, which drives the impeller to rotate. The rotating disk and packing rotate under the drive of the impeller and cut and break the bubbles. The rotor speed is 400 rpm. A visualization window 200 is connected to the liquid outlet at the top of the shell. A high-speed camera 300 is used to photograph the bubbles and obtain the bubble size. The obtained bubble size is in the range of 100 micrometers to 2000 micrometers.

[0073] Example 3

[0074] See Figure 3 As shown, a dual-channel fluid-driven rotary packed bed is applied to a water-carbon dioxide system process:

[0075] Carbon dioxide is transported into the rotating packed bed device by a blower through the fluid channel of the rotating shaft. Water is pumped into the rotating packed bed device by pump 150 through the inlet of the fluid channel in the shell, driving the impeller to rotate. The rotating disk and packing rotate under the drive of the impeller, cutting and breaking up the bubbles, so that the carbon dioxide dissolves in the water. The pH value of the solution measured at the liquid outlet is 5.6.

[0076] Example 4

[0077] See Figure 4 As shown, a Venturi-structured dual-channel fluid-driven rotating packed bed is applied to the ozone degradation of p-nitrophenol in water:

[0078] The difference from Examples 1 and 3 is that the guide plate in this example adopts a Venturi structure; the wastewater containing p-nitrophenol enters the device from the inlet of the fluid channel in the shell, driving the impeller to rotate, and the concentration of p-nitrophenol in the rotating packed bed device is 100 mg·L⁻¹. -1 The concentration of gaseous ozone is 20 mg·L⁻¹. -1 The removal rate of p-nitrophenol after the reaction reached 92%.

[0079] Example 5

[0080] See Figure 5 As shown, a porous blade structure dual-channel fluid-driven rotating packed bed is applied to the ozone degradation of p-nitrophenol in water:

[0081] The difference between Example 5 and Example 4 is that Example 5 uses a porous blade structure.

[0082] Wastewater containing p-nitrophenol enters the device through the inlet of the shell fluid channel, driving the impeller to rotate. The concentration of p-nitrophenol in the rotating packed bed device is 100 mg·L⁻¹. -1 The concentration of gaseous ozone is 20 mg·L⁻¹. -1The removal rate of p-nitrophenol after the reaction reached 90%.

[0083] Example 6

[0084] See Figure 6 As shown, a Venturi-structured dual-channel fluid-driven rotating packed bed is applied to an experimental process in a kerosene-water system.

[0085] Adding 2% by mass of Tween 80 to the kerosene as a surfactant, water enters the device through the inlet of the shell fluid channel to drive the impeller to rotate, and kerosene is transported into the device through the shaft fluid channel. A viewing window 200 is arranged at the outlet pipe, and a laser particle size analyzer 300 is used to measure the particle size distribution of the outlet kerosene. The average particle size of the obtained kerosene is in the range of 0.3 micrometers to 5 micrometers.

[0086] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is impossible to exhaustively list all embodiments here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A dual-channel fluid-driven rotary packed bed, characterized in that: Includes housing, rotor assembly, housing fluid channel, shaft fluid channel, and guide plate; The rotor assembly includes a rotating shaft, a drive impeller, a turntable, and packing. Both ends of the rotating shaft are disposed in bearing seats, and the bearing seats are fixed to the inner sidewall of the housing; The drive impeller is fixedly connected to the rotating shaft; The turntable is fixedly connected to the rotating shaft and is located at the center of the rotating shaft; The filler is fixed at the edge of the turntable; The rotating shaft is provided with a rotating shaft fluid channel; The shell sidewall is provided with a shell fluid channel; there are two shell fluid channels on the shell sidewall, which are arranged facing each other on the left and right; The top of the shell is provided with a liquid outlet; One end of the guide plate is fixed to the housing, and there is a gap between the other end and the rotating shaft; this gap faces the drive impeller inward.

2. The dual-channel fluid-driven rotary packed bed according to claim 1, characterized in that: The surface shape of the guide plate can be flat or streamlined.

3. The dual-channel fluid-driven rotary packed bed according to claim 1, characterized in that: The guide plate and the inner wall of the shell form a Venturi structure.

4. The dual-channel fluid-driven rotary packed bed according to claim 1, characterized in that: The shaft is a hollow structure, and a through hole is provided on the side wall of the shaft.

5. The dual-channel fluid-driven rotary packed bed according to claim 1, characterized in that: The filler is a plastic filler.

6. The dual-channel fluid-driven rotary packed bed according to claim 1, characterized in that: The drive impeller blades are straight blades, curved blades, or helical blades.

7. The dual-channel fluid-driven rotary packed bed according to claim 1, characterized in that: The drive impeller is fixedly connected to the rotating disk.

8. The application of the dual-channel fluid-driven rotating packed bed as described in any one of claims 1-7 in multiphase flow reaction and absorption processes; The multiphase flow includes gas-liquid and liquid-liquid.

9. The application according to claim 8, characterized in that, The specific steps include the following: 1) The liquid enters the rotating packed bed device through the liquid channels on both sides of the shell, and drives the impeller in the direction of flow through the gap between the guide plate and the rotating shaft; 2) The impeller rotates under the force of the liquid, which in turn drives the rotating shaft to rotate. The rotating shaft then drives the turntable to rotate, and the turntable drives the packing to rotate. 3) The two fluids enter the rotating packed bed through the fluid channel of the rotating shaft, and are efficiently dispersed by the dual shearing action of the rotating impeller and the packing, thereby enhancing the mass transfer and reaction process; In step 3), the pressure of the fluid is >500 Pa; In step 3), the fluid includes gas, liquid or supercritical fluid.

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