Single-shaft driven axial flow dust removal rotating packed bed integrated device

Abstract

The application discloses a single-shaft driving axial-flow dust-removing rotating packed bed integrated device and belongs to the technical field of gas-solid separation and purification. In order to solve the problems of equipment dispersion, high energy consumption and low efficiency in the prior art, the single-shaft driving axial-flow dust-removing rotating packed bed integrated device is provided, which comprises a rotating bed main body, a dust-removing device and a transmission device. The hollow rotating shaft is used for synchronously driving the packing rotor and the centrifugal impeller by a single motor. Dust-containing gas enters the dust-removing device through a tangential gas inlet, and gas-solid separation is completed under the action of the centrifugal impeller. The purified gas is directly introduced into the rotating bed main body through a gas conveying pipe and completes gas-liquid mass transfer with the absorption liquid sprayed by a liquid distributor in the packing layer. The device adopts a vertical compact layout, cancels repeated power configuration, greatly reduces the floor area and energy consumption, and solves the problems of the traditional split-type equipment, such as dispersion and low efficiency. The device is suitable for the collaborative requirements of "gas-solid dust removal + gas-liquid mass transfer" in the fields of chemical industry, environmental protection and energy, and has a wide application prospect.

Description

Technical Field

[0001] This invention belongs to the field of gas-solid separation and purification technology, and specifically relates to a single-axis driven axial flow dust removal rotary packing bed integrated device. Background Technology

[0002] In the fields of chemical production and environmental protection, gas-solid dust removal equipment and gas-liquid mass transfer equipment are usually designed independently and operated in stages, which leads to the following problems: (1) In traditional processes, the independent arrangement of the two sets of equipment not only occupies a lot of space, but also increases the cost of equipment purchase, installation and operation and maintenance; (2) The power systems of the two sets of equipment are redundantly configured, resulting in energy waste, which does not conform to the industrial development trend of "energy saving and consumption reduction"; (3) The gas after dust removal needs to be transported to the mass transfer equipment through pipelines. During the transportation process, it is easily affected, resulting in the attenuation of mass transfer effect, which affects the stability and economy of the overall process.

[0003] While some existing technologies attempt to integrate dust removal and mass transfer equipment, they still suffer from drawbacks such as the lack of integrated drive systems, poor flow field matching between dust removal and mass transfer, and insufficient collaborative design between packing and dust removal components. Therefore, there is an urgent need to develop an integrated device with single-shaft drive, compact structure, high energy utilization, and efficient dust removal-mass transfer synergy to address the core problems of dispersed equipment, high energy consumption, and low efficiency in existing technologies. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the lack of integration between dust removal and mass transfer equipment, poor flow field matching between dust removal and mass transfer, and insufficient collaborative design between packing and dust removal components. This invention provides a single-axis driven axial flow dust removal rotary packing bed integrated device, which synchronously drives the dust removal impeller and packing rotor with a single motor, eliminating redundant power configuration, reducing flow loss and mass transfer attenuation, and improving mass transfer efficiency.

[0005] To achieve the above objectives, the present invention employs the following technical solution:

[0006] A single-axis driven axial flow dust collector rotary packing bed integrated device includes a transmission device, a rotary packing bed and a dust collector, wherein the rotary packing bed and the dust collector are connected by a flange seal.

[0007] The transmission device includes a motor, a rotating shaft, a driven pulley, a transmission belt, and a driving pulley. The motor is connected to the driving pulley, and the driving pulley is connected to the driven pulley mounted on the rotating shaft via the transmission belt.

[0008] The dust removal device includes an air inlet, a centrifugal impeller, an air delivery pipe, a dust collection chamber, and a dust removal device housing. The upper part of the side wall of the dust removal device housing is provided with an air inlet, and the bottom end is provided with a dust collection chamber. A hole is opened on the upper surface of the dust removal device housing, and a deep groove ball bearing adapted to the rotating shaft is installed in the hole. One end of the rotating shaft passes through the deep groove ball bearing and extends into the interior of the dust removal device housing, and is supported and connected to the dust removal device housing. The rotating shaft has a hollow structure, and an air delivery pipe is formed inside. The centrifugal impeller is connected to the lower part of the rotating shaft, and the horizontal position of the centrifugal impeller is lower than the air inlet.

[0009] The rotating packed bed includes a rotating bed shell, an air outlet, packing, a liquid distributor, a liquid inlet, an air outlet, a turntable, and a liquid outlet. The bottom surface of the rotating bed shell has a hole, into which a deep groove ball bearing adapted to the rotating shaft is installed. The other end of the rotating shaft passes through the deep groove ball bearing and extends into the rotating bed shell, where it is supported and connected. An air outlet is provided on the side wall of the rotating shaft extending into the rotating bed shell. The turntable is connected to the top of the rotating shaft, and packing is placed on the turntable. The air outlet abuts against the turntable. The liquid inlet is connected to the liquid distributor via a stainless steel bellows. The liquid distributor is inserted into the center hole of the packing. The liquid outlet is located at the bottom of the rotating bed shell.

[0010] Furthermore, the motor is a YVP series variable frequency speed control three-phase asynchronous motor with a rated power of 4kW, a rated speed of 1480rpm, a protection level of IP54, and an operating voltage of 380V / 50Hz.

[0011] Furthermore, both the driving pulley and the driven pulley are made of gray cast iron, and the driven pulley has a V-groove on its surface; the transmission belt is a V-belt, and the tension is controlled between 50-80N during operation; the shaft is made of 304 stainless steel seamless tube.

[0012] Furthermore, the dust removal device housing adopts a conical structure design, is made of 304 stainless steel, and has a wear-resistant coating sprayed on the inner wall with a thickness of ≥0.5mm.

[0013] Furthermore, the air inlet is a DN100 flange, arranged tangentially, and a guide plate is provided inside the air inlet. The angle between the guide plate and the tangential direction of the dust removal device housing is 30°.

[0014] Furthermore, the centrifugal impeller adopts a backward-curved blade structure with 12 blades made of wear-resistant alloy steel. The connection between the centrifugal impeller and the shaft adopts a transition fit and is axially fixed by a locking nut. The dust collection chamber has a drawer-type structure with a wear-resistant rubber liner inside. A sealing door is provided at the front end of the dust collection chamber. The door is sealed with a rubber sealing ring between itself and the dust removal device housing. A handle and a locking buckle are provided on the outside of the sealing door.

[0015] Furthermore, the rotating bed housing is made of 304 stainless steel and is stamped, with the inner wall polished; the air outlet is a ring array structure with a total of 8 air holes, evenly distributed on the same circumference.

[0016] Furthermore, both the liquid inlet and the air outlet adopt DN50 flange interfaces, the liquid inlet is equipped with a stainless steel shut-off valve, and the air outlet has a built-in stainless steel filter screen; 12 atomizing nozzles are evenly arranged below the liquid distributor.

[0017] Furthermore, the packing material is a type 1000 conventional wire mesh structured packing with a specific surface area of ​​1000 m². 2 / m 3 The porosity is ≥90%. The filler is fixed to the turntable by two layers of stainless steel pressure rings. The edge of the pressure rings is equipped with anti-drop buckles.

[0018] The beneficial effects of this invention are:

[0019] (1) A single motor synchronously drives the dust collector impeller and the packing rotor, eliminating redundant power configuration and significantly reducing energy consumption;

[0020] (2) The vertical layout significantly reduces the equipment footprint and installation space, making it suitable for confined working environments;

[0021] (3) The gas after dust removal enters the mass transfer zone directly, reducing flow loss and mass transfer attenuation, and improving mass transfer efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a single-axis driven axial flow dust collector rotary packing bed integrated device;

[0023] Figure 2 yes Figure 1 A three-dimensional structural diagram of a centrifugal impeller.

[0024] In the picture:

[0025] Rotary bed housing 1, air inlet 2, air outlet 3, motor 4, rotating shaft 5, packing 6, liquid distributor 7, liquid inlet 8, air outlet 9, turntable 10, liquid outlet 11, driven pulley 12, transmission belt 13, centrifugal impeller 14, air delivery pipe 15, dust collection chamber 16, dust removal device housing 17, driving pulley 18. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0027] Example:

[0028] A single-axis driven axial flow dust collector rotary packing bed integrated device includes a transmission device, a rotary packing bed and a dust collector, wherein the rotary packing bed and the dust collector are connected by a flange seal.

[0029] The transmission device includes a motor 4, a rotating shaft 5, a driven pulley 12, a transmission belt 13, and a driving pulley 18. The motor 4 is connected to the driving pulley 18, and the driving pulley 18 is connected to the driven pulley 12, which is mounted on the rotating shaft 5, via the transmission belt 13.

[0030] The dust removal device includes an air inlet 2, a centrifugal impeller 14, an air delivery pipe 15, a dust collection chamber 16, and a dust removal device housing 17. The upper part of the side wall of the dust removal device housing 17 is provided with the air inlet 2, and the bottom end is provided with the dust collection chamber 16. A hole is opened on the upper surface of the dust removal device housing 17, and a deep groove ball bearing adapted to the rotating shaft 5 is provided in the hole. One end of the rotating shaft 5 passes through the deep groove ball bearing and extends into the interior of the dust removal device housing 17, and is supported and connected to the dust removal device housing 17. The rotating shaft 5 has a hollow structure, and the air delivery pipe 15 is formed inside. The centrifugal impeller is connected to the lower part of the rotating shaft 5, and the horizontal position of the centrifugal impeller 14 is lower than that of the air inlet 2.

[0031] The rotating packed bed includes a rotating bed shell 1, an air outlet 3, packing 6, a liquid distributor 7, a liquid inlet 8, an air outlet 9, a turntable 10, and a liquid outlet 11. The bottom surface of the rotating bed shell 1 has a hole, and a deep groove ball bearing adapted to the rotating shaft 5 is installed in the hole. The other end of the rotating shaft 5 passes through the deep groove ball bearing and extends into the interior of the rotating bed shell 1, and is supported and connected to the rotating bed shell 1. An air outlet 3 is provided on the side wall of the rotating shaft 5 extending into the interior of the rotating bed shell 1. The turntable 10 is connected to the top of the rotating shaft 5. The packing 6 is installed on the turntable 10. The air outlet 9 abuts against the turntable 10. The liquid inlet 8 is connected to the liquid distributor 7 through a stainless steel bellows. The liquid distributor 7 is inserted into the center hole of the packing 6. The liquid outlet 11 is located at the bottom of the rotating bed shell 1.

[0032] Specifically, the rotating bed body serves as the core unit for gas-liquid mass transfer. Its rotating bed shell 1 is made of 304 stainless steel and is stamped and formed. The inner wall is polished, which can effectively reduce liquid residue on the wall and gas flow resistance. Both the liquid inlet 8 and the gas outlet 9 adopt DN50 flange interfaces. The liquid inlet 8 is equipped with a stainless steel shut-off valve to facilitate the adjustment of the absorption liquid flow rate. The gas outlet 9 has a built-in stainless steel filter screen to prevent liquid droplets from being carried out with the gas.

[0033] Specifically, the liquid distributor 7 is connected to the liquid inlet 8 of the rotating bed housing 1 through a stainless steel bellows, which can offset the slight vibration during the operation of the device and ensure stable delivery of the absorbent liquid; according to the spray coverage range shown in the attached figure, 12 atomizing nozzles are evenly arranged below the liquid distributor 7, and the spray area completely covers the packing layer to avoid mass transfer dead zones.

[0034] Specifically, packing 6 uses type 1000 traditional wire mesh structured packing, which has a specific surface area of ​​1000 m². 2 / m 3 With a porosity of ≥90%, it features high throughput and low pressure drop. The packing 6 is fixed to the turntable 10 by two layers of stainless steel pressure rings. The edge of the pressure rings is equipped with anti-drop buckles to ensure that the packing layer is stable and has no displacement during high-speed rotation.

[0035] Specifically, the turntable 10 has a keyway in the center, which is fixedly connected to the upper end of the rotating shaft 5 by a flat key to ensure that the power transmission is free from slippage; the bottom of the rotating bed housing 1 has a liquid outlet 11, which adopts a DN40 flange interface.

[0036] Specifically, as a pre-unit for gas-solid separation, the dust removal device has a conical shell 17 made of 304 stainless steel. The inner wall is coated with a wear-resistant coating with a thickness of ≥0.5mm, which can resist the scouring and wear of dust particles and extend the service life of the equipment.

[0037] Specifically, the air inlet 2 is located on the upper side of the dust removal device housing 17, and is arranged tangentially. The interface specification is DN100 flange. When connected to the external gas pipeline, a flexible joint needs to be installed to reduce the impact of pipeline vibration on the device. The air inlet 2 is equipped with a guide plate, and the guide plate makes an angle of 30° with the tangent direction of the housing. This guide plate can guide the gas to form a pre-swirling flow, so that large dust particles (particle size ≥5μm) settle to the housing wall under the initial action of centrifugal force, thus separating some impurities in advance.

[0038] Specifically, the centrifugal impeller 14 is located below the air inlet 2, adopts a backward curved blade structure, has 12 blades, and is made of wear-resistant alloy steel; it is connected to the lower end of the rotating shaft 5 by a double key, the connection adopts a transition fit, and is axially fixed by a lock nut to prevent the impeller from loosening during high-speed rotation.

[0039] Specifically, the dust collection chamber 16 has a drawer-type structure and is located at the bottom of the dust removal device housing 17. The interior is equipped with a wear-resistant rubber liner to prevent dust from impacting and causing noise and wear. The front end of the dust collection chamber 16 is equipped with a sealed door, and the door body is sealed with a rubber sealing ring to ensure that there is no gas leakage. The outside of the sealed door is equipped with a handle and a locking buckle, which makes it easy for operators to regularly pull it out for cleaning.

[0040] Specifically, the vent 3 is a ring array structure, located on the upper part of the rotating shaft 5, with a total of 8 vents evenly distributed on the same circumference; the vent 3 discharges gas into the packing 6 for mass transfer, and the liquid outlet 11 is located below the vent 3. Since the liquid becomes rich after mass transfer and is discharged from the liquid outlet 11, a liquid seal is formed to prevent gas leakage.

[0041] Specifically, the transmission device serves as the core power unit. Motor 4 is a YVP series variable frequency speed-regulating three-phase asynchronous motor with a rated power of 4kW, a rated speed of 1480rpm, a protection level of IP54, and an operating voltage of 380V / 50Hz.

[0042] Specifically, both the driving pulley 18 and the driven pulley 12 are made of gray cast iron. The driven pulley 12 has a V-groove on its surface, which fits tightly with the transmission belt 13 to prevent slippage during transmission.

[0043] Specifically, the transmission belt 13 is a V-belt, and the tension is controlled between 50-80N during operation. The tension can be adjusted by adjusting the position of the motor bracket. A protective cover is provided on the outside of the pulley. The protective cover is welded from steel plate, which not only prevents foreign objects from getting in, but also provides safety protection. An observation window is provided on the protective cover to facilitate the operator to check the belt's operating status.

[0044] Specifically, the rotating shaft 5 is the core power transmission component, which is made of seamless 304 stainless steel tube. Both ends are supported and connected to the rotating bed housing 1 and the dust removal device housing 17 through deep groove ball bearings. The bearing seat is made of cast iron and filled with lithium-based grease. The bearing is equipped with a sealing end cap on the outside to prevent dust and liquid from entering the bearing.

[0045] Specifically, the rotating bed housing 1 and the dust removal device housing 17 are sealed together by a flange to ensure that there is no leakage of internal gas during the operation of the device, thus avoiding environmental pollution and energy loss.

[0046] Specifically, the gas path design of this device follows the principle of "low resistance and uniform distribution". After the gas enters from the inlet 2, it is guided by the guide plate to form a pre-swirling flow. The centrifugal impeller 14 can provide greater centrifugal force to the gas entering from the inlet 2 through high-speed rotation, so that large dust particles with a particle size ≥5μm settle to the wall of the dust removal device shell 17 under the initial action of centrifugal force. The dust collection chamber 16 is located at the bottom of the dust removal device, which collects and stores the dust particles separated from the gas. After the gas passes through the dust removal process, it enters the gas delivery pipe 15 and enters the rotating bed shell 1 from the outlet 3. The gas can completely enter the packing 6 for mass transfer, effectively reducing the energy consumption of subsequent gas transportation.

[0047] Specifically, the liquid circuit design of this device emphasizes "uniform spraying and full contact". After the absorbent enters from the inlet 8, it is atomized by the liquid distributor 7 and uniformly covers the surface of the packing 6. Under the action of centrifugal force, a thin liquid film is formed, which comes into countercurrent contact with the gas flowing from bottom to top. The liquid film is renewed quickly, ensuring that the mass transfer reaction is fully carried out.

[0048] In this embodiment, the operating parameters of the device can be flexibly adjusted by the motor 4. When the dust content in the treated gas is high, the speed of the motor 4 can be increased to enhance the dust removal capacity of the centrifugal impeller 14. When it is necessary to improve the mass transfer efficiency, the liquid spray density can be increased to ensure that the liquid film on the surface of the packing 6 is continuous and free of dry areas.

[0049] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A single-axis driven axial flow dust collector rotary packing bed integrated device, characterized in that: It includes a transmission device, a rotating stuffing bed, and a dust removal device, wherein the rotating stuffing bed and the dust removal device are connected by a flange seal. The transmission device includes a motor (4), a rotating shaft (5), a driven pulley (12), a transmission belt (13), and a driving pulley (18). The motor (4) is connected to the driving pulley (18), and the driving pulley (18) is connected to the driven pulley (12) on the rotating shaft (5) through the transmission belt (13). The dust removal device includes an air inlet (2), a centrifugal impeller (14), an air supply pipe (15), a dust collection chamber (16), and a dust removal device housing (17). The upper part of the side wall of the dust removal device housing (17) is provided with an air inlet (2), and the bottom end is provided with a dust collection chamber (16). The upper end face of the dust removal device housing (17) is provided with a hole, and a deep groove ball bearing adapted to the rotating shaft (5) is provided in the hole. One end of the rotating shaft (5) passes through the deep groove ball bearing and extends into the interior of the dust removal device housing (17), and is supported and connected to the dust removal device housing (17). The rotating shaft (5) is a hollow structure, and an air supply pipe (15) is formed inside. The centrifugal impeller is connected to the lower part of the rotating shaft (5), and the horizontal position of the centrifugal impeller (14) is lower than the air inlet (2). The rotating packed bed includes a rotating bed shell (1), an air outlet (3), packing (6), a liquid distributor (7), a liquid inlet (8), an air outlet (9), a turntable (10), and a liquid outlet (11). The bottom end face of the rotating bed shell (1) has a hole, and a deep groove ball bearing adapted to the rotating shaft (5) is installed in the hole. The other end of the rotating shaft (5) passes through the deep groove ball bearing and extends into the interior of the rotating bed shell (1) and is supported and connected to the rotating bed shell (1). An air outlet (3) is provided on the side wall of the rotating shaft (5) extending into the interior of the rotating bed shell (1). The turntable (10) is connected to the top end of the rotating shaft (5). The packing (6) is installed on the turntable (10). The air outlet abuts against the turntable (10). The liquid inlet (8) is connected to the liquid distributor (7) through a stainless steel corrugated pipe. The liquid distributor (7) is inserted into the center hole of the packing (6). The liquid outlet (11) is located at the bottom of the rotating bed shell (1). The air inlet (2) has a DN100 flange interface and is arranged tangentially. The air inlet (2) is equipped with a guide plate, and the guide plate is at an angle of 30° with the tangential direction of the dust removal device housing (17).

2. The single-axis driven axial flow dust collector rotary packing bed integrated device according to claim 1, characterized in that: The motor (4) is a YVP series variable frequency speed regulation three-phase asynchronous motor with a rated power of 4kW, a rated speed of 1480rpm, a protection level of IP54, and an operating voltage of 380V / 50Hz.

3. The single-axis driven axial flow dust collector rotary packing bed integrated device according to claim 2, characterized in that: Both the driving pulley (18) and the driven pulley (12) are made of gray cast iron. The driven pulley (12) has a V-groove on its surface. The transmission belt (13) is a V-belt, and the tension is controlled between 50-80N during operation. The rotating shaft (5) is made of 304 stainless steel seamless tube.

4. The single-axis driven axial flow dust collector rotary packing bed integrated device according to claim 3, characterized in that: The dust removal device housing (17) adopts a conical structure design and is made of 304 stainless steel. The inner wall is sprayed with a wear-resistant coating with a thickness of ≥0.5mm.

5. The single-axis driven axial flow dust collector rotary packing bed integrated device according to claim 4, characterized in that: The centrifugal impeller (14) adopts a backward curved blade structure with 12 blades made of wear-resistant alloy steel. The centrifugal impeller (14) and the shaft (5) are connected by a transition fit and are axially fixed by a locking nut. The dust collection chamber (16) is a drawer-type structure with wear-resistant rubber pads inside. The front end of the dust collection chamber (16) is equipped with a sealing door. The door body is sealed with a rubber sealing ring between it and the dust removal device housing (17). The outside of the sealing door is equipped with a handle and a locking buckle.

6. The single-axis driven axial flow dust collector rotary packing bed integrated device according to claim 5, characterized in that: The rotating bed housing (1) is made of 304 stainless steel and is stamped and formed, with the inner wall polished. The air outlet (3) is a ring array structure with a total of 8 air outlets, which are evenly distributed on the same circumference.

7. The single-axis driven axial flow dust collector rotary packing bed integrated device according to claim 6, characterized in that: Both the liquid inlet (8) and the air outlet (9) adopt DN50 flange interfaces. The liquid inlet (8) is equipped with a stainless steel shut-off valve, and the air outlet (9) has a built-in stainless steel filter screen. Twelve atomizing nozzles are evenly arranged below the liquid distributor (7).

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