A super gravity rotating distillation bed

Abstract

The present invention proposes a supergravity rotating distillation bed, comprising: a body, a power input device, a gas-liquid channel, a rotating tray and a mass transfer component; the rotating tray is arranged in the body, and the power input device drives the rotating tray to rotate; the gas-liquid channel runs through the rotating tray and the body; the mass transfer component comprises: a stuffing box, a liquid receiving tray and a liquid distribution tray; a stuffing box is arranged in the rotating tray, and the lower part of the stuffing box is provided with the liquid receiving tray; the liquid receiving tray is connected with the gas-liquid channel, and the liquid distribution tray is arranged on the gas-liquid channel and connected with the stuffing box; the rotating tray, the stuffing box and the power input device rotate synchronously; the gas-liquid channel and the liquid distribution tray are all in a stationary state. When the distillation bed of the present invention is in use, the intermediate shaft does not rotate, and the arrangement of the liquid distribution pipe is simpler and more efficient; its structural design is reasonable, and it can be convenient for multi-level stacking, which is equivalent to increasing the number of tower plates very easily and simply; the mass transfer adaptability is wide.

Description

Technical Field

[0001] The invention relates to the technical field of rotating beds, in particular to an ultra-gravity rotating distillation bed. Background Art

[0002] In the industrial production of chemicals, materials, environmental protection and energy, the separation operations of compounds (such as distillation, stripping or absorption, etc.) use a large number of towers, including packed towers and plate towers. The gas and liquid phases rely on the action of the gravity field to achieve contact mass transfer, achieving the purpose of separation and purification.

[0003] Distillation is a process of mass transfer and heat transfer. In the chemical industry, distillation towers are often used to achieve this purpose. A distillation tower is a tower-type vapor-liquid contact device for distillation. The material in the tower kettle is heated to become steam, enters from the bottom of the tower, rises to the top of the tower, and the condensed liquid part flows back to the top of the tower and flows downward under the action of gravity. The rising gas phase and the descending liquid phase are in countercurrent contact on the packing in the tower; during the two-phase contact, the volatile components in the descending liquid are continuously transferred to the gas phase, and the non-volatile components in the gas phase are continuously transferred to the descending liquid, thereby achieving the purpose of component separation.

[0004] Since the liquid phase contacts the gas phase by falling due to gravity, the liquid phase only has one gravity, the gravity field is weak, the liquid film flows slowly, and the effective contact area per unit volume is small, so the mass transfer efficiency is very low, the equipment is bulky, and the space utilization rate is low.

[0005] The ultra-gravity rotating distillation bed is a new type of temperature and mass transfer equipment. It uses the centrifugal force generated by rotation to make the liquid carry ultra-gravity of dozens of times gravity and contact with the gas phase. Its gas-liquid mass transfer is carried out in this ultra-gravity field. The liquid is torn into micron or even nano-scale liquid films and liquid filaments by ultra-gravity. The gas-liquid two phases have a large contact area and the interface can be quickly updated, which makes the mass transfer efficiency 1 to 2 orders of magnitude higher than that of traditional tower equipment.

[0006] One layer of ultra-gravity rotating distillation bed can equal dozens of theoretical tower plates; an ultra-gravity rotating bed with a height of 1 meter is equivalent to a 15-meter-high common distillation tower; with the same processing capacity, the ultra-gravity rotating distillation bed can reduce the equipment volume by 50 to 70 times.

[0007] Therefore, compared with conventional distillation tower technology, the ultra-gravity rotating distillation bed has the advantages of high reaction mass transfer efficiency, small equipment size, low installation height, flexible installation, easy operation, etc. It also has the characteristics of short reaction material retention time, high flooding point, not easy to foam, not easy to clog, energy saving and environmental protection, convenient maintenance, and can make the equipment run stably within a few seconds. The ultra-gravity rotating bed is a typical new technology for intensifying multiphase flow transfer and reaction process. It is widely used in gas-liquid contact absorption, distillation, desorption, chemical reaction and other occasions in petrochemical, coal chemical, pharmaceutical, metallurgy, light industry, explosives and other industries; it can make chemical production under the conditions of more compact factory layout, lower unit energy consumption and less three waste pollutant emissions.

[0008] Rotating packed distillation beds are classified into countercurrent, crosscurrent and baffled flow according to the gas-liquid contact mode. The structural principle of the countercurrent packed bed is that the annular packed bed composed of wire mesh packing (or other packing) rotates at high speed driven by the motor, and the liquid is evenly sprayed from the static inner cavity in the middle of the packed bed to the inner wall of the rotating packing by the liquid distributor. Under the action of high-speed rotation, the liquid moves radially outward in the packing. At the same time, the gas enters the inner cavity of the packing from the periphery of the packing under the action of pressure difference, and the liquid and gas contact in reverse. The liquid has the characteristics of high dispersion and strong mixing under the action of strong centrifugal force, which greatly enhances the mass transfer and reaction process.

[0009] The single-layer rotating packed distillation bed has a significant distillation effect. In industrial production, multi-layer rotating packed distillation beds are often used. The liquid and gas between each layer are connected through external connecting pipes.

[0010] Chinese patent CN107987279A discloses a baffled supergravity rotating bed, whose rotor includes a concentric rotating disk and a stationary disk. The baffle ring on the stationary disk is at a certain distance from the rotating disk, and the baffle ring on the rotating disk is at a certain distance from the stationary disk. The rotating bed has an original structure, a small size, a low height, low purchase and operation costs, and is easy to use and maintain. It can avoid the need to consider lightning protection, typhoons, earthquakes, and high-altitude operations when using traditional distillation tower equipment.

[0011] Chinese patent CN1014178573A discloses a composite rotor supergravity rotating bed, the innermost layer of which is a dynamic baffle ring, which is fixed to the outside of the liquid inlet pipe, and a number of corrugated discs evenly distributed from top to bottom are fixed on the wall of the dynamic baffle ring. This rotating bed device has a compact and reasonable structure and is suitable for occasions with high liquid-gas velocity and large gas phase flux. However, the gas-liquid mass transfer rate of the above-mentioned rotating bed is not high, and there are disadvantages such as large pressure drop and high power consumption, which limits its application in certain industries.

[0012] The rotating bed provided by Chinese patent CN1059105A adds an annular or cylindrical rotating part at the center of the rotating bed, uses the centrifugal field to remove the liquid entrained in the gas, and adopts various forms of liquid inlet pipes to increase the operating gas speed, evenly distribute the liquid, enhance the mass transfer effect, and thus improve the production capacity.

[0013] The baffled rotating bed disclosed in Chinese patent CN1686591 has as its core component baffle discs composed of concentric circles of different diameters embedded in each other from top to bottom; the baffle disc located at the top is fixed on the shell and is a static baffle disc; the static baffle disc is matched with the dynamic baffle disc embedded below it, which is fixed on the rotating shaft and rotates with the shaft. The gas enters the cavity from the air inlet, flows from the outer edge to the center along the gap between the dynamic and static baffle discs in a zigzag manner, and finally leaves the bed through the air outlet; the liquid enters from the liquid inlet, is drained to the center of the dynamic baffle disc by the guide pipe, and is then thrown to the corresponding static circle by a series of rotating dynamic circles, and finally flows out from the liquid outlet after being collected in the cavity.

[0014] Chinese patent CN1325137C discloses a multi-layer baffled ultra-gravity rotating bed device, including a shell, a rotating shaft with two ends passing through the shell is arranged in the center of the shell, and a group of rotors arranged in layers from top to bottom are connected in series on the rotating shaft to increase the mass transfer capacity of a single device, increase the gas-liquid phase flux, improve the processing capacity per unit time, and the liquid phase is not easy to be mixed.

[0015] Chinese patent CN 202983665 U proposes a direct-drive rotating packed bed reactor, which increases power transmission capacity and reduces equipment vibration by setting structures such as shock absorbers, shock-absorbing springs, shock-absorbing brackets, and a direct drive method.

[0016] Chinese patent CN 101306258 B discloses a high-efficiency rotating distillation bed device, in which gas and liquid are in overall countercurrent contact and cross-current in each rotating filler, and the transfer process is strengthened and the transfer efficiency is improved by means of 3 to 6 layers of rotating fillers; its characteristics are that the contact time and area of ​​gas and liquid are extended through multiple levels of fillers, so that the process is strengthened and the efficiency is improved; the uppermost layer of fillers in the rotating packed bed is used as a demisting layer to reduce mist entrainment and improve the purification capacity; it not only ensures the separation capacity of the rotating packed bed distillation, but also solves the problems of bed flooding and liquid foam entrainment that are easy to occur at the inner diameter of the rotor in the rotating packed bed countercurrent distillation.

[0017] Chinese patent CN104549100A discloses a new type of passive ultra-gravity rotating bed device; without the use of a motor, the rotor is driven to rotate by the flow performance of the high-pressure fluid itself, which can effectively save energy and thus reduce the energy consumption of the entire device. The device requires a high-pressure fluid with a pressure of ≥500Pa, and uses the strong pressure difference generated by such fluid to drive the rotor to rotate, so as to achieve the purpose of energy saving.

[0018] However, experiments have shown that whether it is the air flow entering from the outer diameter or the liquid flow entering from the inner diameter, the kinetic energy required to drive the rotor to rotate is very large. It is only suitable for occasions where there is excess kinetic energy, and its application areas are limited.

[0019] Chinese patent CN 112206698 A discloses a baffled ultra-gravity rotating bed with a rotor rotating as a whole; the rotor rotates as a whole, and a horn-shaped liquid distributor extends downward into the rotor; the first baffle ring and the second baffle ring of the upper and lower rotating disks of the rotor are respectively equipped with a first triangular prism and a second triangular prism as baffles, when the liquid is thrown out from the corresponding position of the first baffle ring or the second baffle ring, it will contact the side edge of the adjacent second triangular prism or the first triangular prism, because the liquid velocity direction is perpendicular to it, the velocity loss can be maximized, and a strong impact force is obtained at the same time, so that the liquid is crushed into a large number of fine droplets, and the mass transfer effect is enhanced, and the S-shaped motion trajectory of the liquid is just opposite to the S-shaped motion trajectory of the gas, the two-phase contact effect is enhanced, and then the gas-liquid mass transfer rate of the rotating bed is improved; the liquid contacts the gas in the rotor in countercurrent, which increases the mass transfer, heat transfer and reaction contact area, so it has a very high heat and mass transfer efficiency. At the same time, it has the advantages of low pressure drop and low power consumption.

[0020] This invention reduces the rotational resistance by rotating the rotor as a whole and improves the efficiency of heat and mass transfer by deflection. However, due to the design structure of the device, it is impossible to realize multi-layer merging and series connection. It is also still unable to adapt to the heat and mass transfer problems of highly corrosive materials.

[0021] The concentric countercurrent type ultra-gravity rotating bed device disclosed in Chinese patents CN101254356A and CN101254357A has the advantages of high mass transfer efficiency, easy intermediate feeding, and convenient multi-layer installation, but this type of rotating bed has high requirements for the initial distribution of the liquid, and whether the liquid is evenly distributed directly affects the mass transfer performance of the equipment. The layer-by-layer partition distributor and stepped distributor used in this type of device can play an initial distribution role in the liquid, but the liquid is unevenly distributed in the axial direction of the moving disk, the porosity of the distributor is low, and it is easy to form a bottleneck of the gas channel in the tower, and the manufacture and installation of the distributor is relatively troublesome.

[0022] Chinese patent CN1060415A discloses a rotating liquid distribution type rotating bed device; a rotating liquid distribution type rotating bed device in which a liquid distributor is fixedly connected to a rotor or a component on the rotor. Liquid is distributed by the centrifugal force generated by rotation, which increases the liquid flow rate operating range. However, a dynamic sealing structure is required between the liquid distributor and the liquid feed pipe, and the distributor structure is complex and difficult to manufacture and install; the liquid is unevenly distributed in the axial direction in the liquid distribution pipe.

[0023] Chinese patent CN 101898047B discloses a supergravity rotating bed with a coil-type rotating liquid distributor; a coil-type liquid distributor is installed on a high-speed rotating rotor, and the coil-type liquid distributor rotates with the rotor, providing a supergravity rotating bed with a coil-type rotating liquid distributor that utilizes the centrifugal force generated by rotation to distribute liquid, has uniform liquid distribution, a wide liquid flow operating range, a high porosity, a simple and compact structure, is easy to manufacture and install, and has better use effect. However, the liquid distributor of the device rotates synchronously with the rotor, and the relative position of the circumference of the moving coil and the liquid distributor remains unchanged. The moving coil part that is not sprayed (or sprayed less) with liquid will always be in the original state and will not be adjusted with the rotation of the rotating shaft. Due to the existence of manufacturing errors, the liquid distributor is always in an eccentric state, so the state of uneven liquid spraying lines always exists.

[0024] Chinese patent CN102240461 A discloses a multi-stage absorption type supergravity rotating bed; it includes a cylindrical shell, a rotating shaft is vertically arranged at the center of the cylindrical shell, connected to a motor, and a gap is left between the outer circumference of the plane mesh plate packing group and the inner wall of the shell; the rotating shaft is a hollow structure, and a liquid inlet is arranged at its upper end; the first-level plane mesh plate packing group is fixed at the upper end of the rotating shaft, the secondary plane mesh plate packing group is arranged below it and is located on the outer side of the central distribution groove wall, the central distribution groove is fixed on the rotating shaft, and small holes are distributed at the rotating shaft where the first-level plane mesh plate packing group is located; between each level of the plane mesh plate packing group, there is a liquid collection groove for collecting the liquid flowing down from the upper level of the plane mesh plate, and a guide pipe is arranged on the groove, and the liquid outlet of the guide pipe is directly opposite to the distribution groove below it; a rotary demister is also fixed on the rotating shaft above the first-level plane mesh plate packing group. The rotating bed obtains higher heat transfer, mass transfer coefficient and higher dust removal efficiency under the condition of lower liquid-gas ratio. The advantages of the flat mesh filler cross-flow type super gravity rotating bed, such as low gas resistance, high mass transfer and heat transfer efficiency, and high dust removal efficiency, are retained. It is a multi-stage rotating bed, which drives the turntable and filler to rotate through the rotation of the middle shaft. However, there are problems such as difficulty in liquid distribution, uneven liquid distribution, large interlayer spacing, large equipment, and unsuitability for highly corrosive materials.

[0025] From the above disclosure, it can be found that the rotating bed reactor equipment is usually composed of a shell, a rotating rotor, a material inlet and outlet, a transmission shaft and a motor. The rotating rotor is filled with porous medium fillers or multi-layer concentric baffles. The common problems are:

[0026] 1. Since the shaft rotates in the middle, the liquid also falls in the middle, making it inconvenient to distribute the liquid, often resulting in uneven liquid distribution; even the liquid cannot completely wet the filler, and the gas can easily take shortcuts, resulting in reduced mass transfer efficiency of the rotating bed.

[0027] 2. Under a certain processing capacity, if a single-layer (axial) packing wants to improve the transmission capacity (or separation effect) of the equipment, it can only be done by increasing the diameter of the equipment. The increase in the diameter of the equipment makes the difference between the inner and outer diameters of the rotating bed rotor too large, that is, the cross-sectional area of ​​the liquid flow is too large, and the liquid at the inner diameter of the rotor is easy to fill the entire cross-section, resulting in poor gas flow and serious liquid foam entrainment.

[0028] 3. The equipment is not corrosion-resistant and it is very difficult to prevent corrosion.

[0029] 4. When stacking, many pipes are required on the outside of the equipment, which increases the space occupied by the equipment and is prone to leakage at the interface. Summary of the invention

[0030] The invention provides a supergravity rotating distillation bed, which solves the problems of uneven liquid distribution, low mass transfer efficiency and large equipment space occupation in the rotating bed in the prior art.

[0031] The technical solution of the present invention is achieved in this way:

[0032] An ultra-gravity rotating distillation bed, comprising:

[0033] body, power input device, gas-liquid channel, rotating tray and mass transfer assembly;

[0034] The rotating tray is arranged in the machine body, and the power input device drives the rotating tray to rotate;

[0035] The gas-liquid channel runs through the rotating tray and the body, the upper interface of the gas-liquid channel is a liquid inlet and a gas outlet, and the lower interface is a liquid outlet and a gas inlet;

[0036] The mass transfer component includes: a stuffing box, a liquid receiving tray, and a liquid distribution tray;

[0037] A stuffing box is provided in the rotating tray, and the liquid receiving tray is provided at the lower part of the stuffing box; the stuffing box is provided with a lower liquid port, and the stuffing box is connected with the gas-liquid channel through the gas outlet hole provided on the gas-liquid channel; the liquid receiving tray is connected with the gas-liquid channel, and the liquid receiving tray is connected with the liquid outlet and gas inlet holes provided on the gas-liquid channel;

[0038] The liquid distribution pan is arranged on the gas-liquid channel and communicated with the stuffing box. The liquid enters the liquid distribution pan through the upper interface, then enters the stuffing box, and finally enters the liquid receiving pan through the lower liquid port, enters the gas-liquid channel through the liquid outlet and air inlet, and is discharged through the lower interface.

[0039] The rotating tray and the stuffing box rotate synchronously with the power input device; the gas-liquid channel, the liquid distribution tray, and the gas-liquid isolation plate are all in a stationary state.

[0040] In some embodiments, a gas-liquid isolation plate is also included, which is arranged on the gas-liquid channel and located between the liquid outlet and the air inlet and outlet.

[0041] In some embodiments, an anti-corrosion isolation cover is further included, which is disposed between the rotating tray and the stuffing box.

[0042] In some embodiments, the powered rotating tray includes an upper tray, a lower tray, and a tray connecting ring connecting the upper tray and the lower tray.

[0043] In some embodiments, a sealing structure is provided at the connection between the anti-corrosion isolation cover and the gas-liquid channel. A sealing structure is provided at the connection between the machine body, the rotating tray and the gas-liquid channel.

[0044] In some embodiments, the lower liquid port is located at an outer circumference of the stuffing box.

[0045] In some embodiments, the mass transfer components are provided in N groups, where N=2-12.

[0046] In some embodiments, the gas-liquid channel is a pipeline or a pipeline composed of N pipe segments, where N=2-12.

[0047] In some embodiments, the parts in contact with liquid and gas are made of anti-corrosion materials.

[0048] In some embodiments, the liquid distribution plate is composed of a liquid collecting ring and a liquid distribution pipe. The liquid collecting ring is an annular protrusion with a hollow structure in the middle. The diameter of the protrusion is smaller than the diameter of the gas-liquid channel. The outer wall of the protrusion and the inner wall of the gas-liquid channel form an annular liquid collecting trough to collect the liquid flowing downward in the gas-liquid channel; the liquid distribution pipe is located at the bottom of the liquid collecting trough and is installed in the circumferential through hole of the gas-liquid channel. The outlet of the liquid distribution pipe is close to the stuffing box to achieve fast and uniform liquid distribution.

[0049] In some embodiments, there are multiple liquid distribution pipes, which are evenly distributed on the periphery of the liquid collecting tank.

[0050] Compared with the prior art, the present invention has the following beneficial effects:

[0051] (1) When the distillation bed of the present invention is in use, the intermediate shaft does not rotate, and the arrangement of the liquid distribution pipes is simpler and more efficient.

[0052] (2) The distillation bed structure is reasonably designed and can be easily stacked in multiple stages, which is equivalent to increasing the number of tower plates easily and simply; it has a wide mass transfer adaptability.

[0053] (3) When the distillation bed is in use, the liquid distribution pipe is in a stationary state, so that the packing in the packing box can be evenly subjected to the liquid flow, the liquid distribution is more uniform, and the mass transfer efficiency is high.

[0054] (4) The processing capacity can be improved by simply increasing the height of the stuffing box; the production capacity has wide adaptability.

[0055] (5) The anti-corrosion design of this distillation bed is very simple, and the anti-corrosion materials are extensive and easy to select, so it can accept any highly corrosive materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative labor.

[0057] Figure 1 : It is a schematic diagram of the structure of the rotary distillation bed of Example 1;

[0058] Figure 2 : It is a schematic structural diagram of the rotating tray of the rotating distillation bed in Example 1;

[0059] Figure 3 : It is a schematic structural diagram of the liquid distribution plate of the rotary distillation bed in Example 1;

[0060] Figure 4 : It is a schematic structural diagram of the liquid distribution pipe of the rotary distillation bed in Example 1;

[0061] Figure 5 : It is a schematic diagram of the structure of the rotary distillation bed of Example 2;

[0062] Among them: body 10, power input device 20, gas-liquid channel 30, rotating tray 40, mass transfer component 50, upper interface 301, lower interface 302, air outlet 303, liquid outlet and air inlet 304, upper tray 401, lower tray 402, tray connecting ring 403, tray panel 404, hollow rotating shaft 405, bearing 406, stuffing box 501, liquid receiving tray 502, liquid distribution tray 503, gas-liquid isolation plate 504, anti-corrosion isolation cover 505, lower liquid port 5011, liquid collecting ring 5031, liquid distribution pipe 5032, liquid collecting tank 50311, stuffing 5012, sealing structure 60. DETAILED DESCRIPTION

[0063] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection, an electrical connection, or a communication 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.

[0065] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0066] Example 1

[0067] See also Figure 1-4As shown, a supergravity rotating distillation bed comprises: a body 10, a power input device 20, a gas-liquid channel 30, a rotating tray 40 and a mass transfer assembly 50. The rotating tray 40 is arranged inside the body 10. In order to facilitate the disassembly of the rotating tray 40, the power rotating tray 40 in this embodiment comprises an upper tray 401, a lower tray 402 and a tray connecting ring 403 connecting the upper tray 401 and the lower tray 402. The upper tray 401 and the lower tray 402 are both a combination of a disk panel 404 and a hollow rotating shaft 405, the two disk panels 404 correspond to each other up and down, and the hollow rotating shaft 405 is combined with the bearing seat on the body 10 through a bearing 406. The power input device 20 is connected to the rotating tray 40 to drive the rotating tray 40 to operate synchronously. The gas-liquid channel 30 runs through the rotating tray 40 and the body 10, the upper interface 301 of the gas-liquid channel 30 is a liquid inlet and a gas outlet, and the lower interface 302 is a liquid outlet and a gas inlet. The mass transfer component 50 includes: a stuffing box 501, a liquid receiving tray 502, and a liquid distribution tray 503. The stuffing box 501 is arranged inside the rotating tray 40, and the stuffing box 501 is filled with stuffing 5012. The stuffing box 501 is provided with a lower liquid port 5011, and the lower liquid port 5011 is located at the outer circumference of the stuffing box 501. The liquid receiving tray 502 is arranged at the lower part of the stuffing box 501 and wraps the lower liquid port 5011, so that the exchanged liquid is collected through the lower liquid port 5011 and enters the gas-liquid channel 30. The liquid receiving tray 502 is not in direct contact with the stuffing box 501, and it is fixed on the gas-liquid channel 30, and does not rotate with the rotating tray 40, and is in a stationary state. A plurality of air outlets 303 are provided on the gas-liquid channel 30, and the stuffing box 501 is connected with the gas-liquid channel 30 through the air outlets 303, and the gas is collected into the gas-liquid channel 30 through the air outlets 303. The liquid receiving tray 502 is connected with the gas-liquid channel 30 through the liquid outlet and the air inlet 304 arranged on the gas-liquid channel 30. After the gas enters the gas-liquid channel 30, it enters the liquid receiving tray 502 through the liquid outlet and the air inlet 304, and enters the stuffing box 501 through the outer circumference to carry out heat and mass transfer between the gas and the liquid. The liquid distribution tray 503 is arranged on the gas-liquid channel 30 and is connected with the stuffing box 501. The liquid enters the liquid distribution tray 503 through the upper interface 301, and then enters the stuffing box 501. After heat and mass transfer, it enters the liquid receiving tray 502 through the lower liquid port 5011, enters the gas-liquid channel 30 through the liquid outlet and the air inlet 304, and is discharged through the lower interface 302. The above-mentioned rotating tray 40, the stuffing box 501 and the power input device 20 rotate synchronously; the gas-liquid channel 30 and the liquid distribution tray 503 are all in a stationary state. The liquid distribution tray 503 is composed of a liquid collecting ring 5031 and a liquid distribution pipe 5032.The liquid collecting ring 5031 is an annular protrusion with a hollow structure in the middle. The diameter of the protrusion is smaller than the diameter of the gas-liquid channel 30. The outer wall of the protrusion and the inner wall of the gas-liquid channel 30 form an annular liquid collecting groove 50311 to collect the liquid flowing downward in the gas-liquid channel 30. The liquid distributing pipe 5032 is located at the bottom of the liquid collecting groove 50311 and is installed in the circumferential through hole of the gas-liquid channel 30. The outlet of the liquid distributing pipe 5032 is close to the stuffing box 501 to achieve fast and uniform liquid distribution. The liquid distributing pipe 5032 can be set to multiple as needed, evenly distributed on the outer periphery of the liquid collecting groove 50311. Since the liquid distributing plate 503 is in a stationary state, the liquid distributing pipe is installed in the circumferential through hole of the gas-liquid channel 3030. This design makes the installation of the liquid distributing pipe not only convenient but also efficient. Moreover, when the liquid distribution pipe is in use, it does not rotate and is not affected by centrifugal force, so that the filler in the filler box 501 can be evenly affected by the liquid flow, and the liquid is distributed more evenly, thus solving the problem of low mass transfer efficiency caused by uneven liquid distribution and gas taking shortcuts.

[0068] In order to allow the liquid and the gas to fully transfer heat and mass on the packing, the present embodiment further adds a gas-liquid isolation plate 504. The gas-liquid isolation plate 504 is arranged on the gas-liquid channel 30 and is located between the liquid outlet and the gas inlet 304 and the gas outlet 303. In this way, the liquid in the upper layer is blocked by the gas-liquid isolation plate 504 from directly entering the gas-liquid channel 30 at the lower part, while the gas can smoothly pass through the gas-liquid channel 30 for heat or mass transfer.

[0069] Since many application scenarios involve corrosive materials, this embodiment also adds an anti-corrosion isolation cover 505, which is arranged between the rotating tray 40 and the stuffing box 501. First, the anti-corrosion isolation cover 505 is more convenient to add to this design, and secondly, the gas and liquid are wrapped in the anti-corrosion isolation cover 505, which prolongs the service life of the equipment. In addition, the parts in contact with liquid and gas in this equipment are all made of anti-corrosion materials.

[0070] In order to better seal, the distillation bed is also designed with sealing structures in multiple places. These sealing structures themselves belong to existing designs and are not described in detail here. The distillation bed is provided with a sealing structure 60 at the connection between the anti-corrosion isolation cover 505 and the gas-liquid channel 30, and a sealing structure 60 is provided at the connection between the body 10 and the rotating tray 40 and the gas-liquid channel 30.

[0071] The process of the above-mentioned ultra-gravity rotating distillation bed is as follows: the power input device 20 rotates, driving the coaxial rotating tray 40 to rotate synchronously; the anti-corrosion isolation cover 505, the stuffing box 501 and the stuffing arranged on the rotating tray 40 rotate synchronously together. The gas enters the device from the lower interface 302 of the vapor-liquid channel, and the liquid enters the device from the upper interface 301 of the vapor-liquid channel. In the stuffing box 501, the gas enters the stuffing layer from the outer circumference, and the liquid enters the stuffing layer from the inner circumference. The gas and liquid contact on the stuffing, and heat and mass transfer occur to achieve the purpose of distillation. Subsequently, the gas returns to the vapor-liquid channel through the gas outlet 303 and moves upward; the liquid is thrown on the inner wall of the stuffing box 501 under the action of centrifugal force and flows into the liquid receiving tray 502, and returns to the vapor-liquid channel through the liquid outlet and the vapor inlet and moves downward.

[0072] Example 2

[0073] For the mass transfer components 50, those skilled in the art can select from 2 to 12 groups as needed. Figure 5 As shown: there are 3 groups of mass transfer components 50. The 3 groups of mass transfer components 50 are closely connected, so that the gas and liquid can perform multiple heat mass transfers, thereby improving the mass transfer efficiency. Since the mass transfer components 50 can be selected from 2-12 groups, the gas-liquid channel 30 can also be a pipe or a combination of 2-12 pipes. The difference between this embodiment and embodiment 1 is that 2 groups of mass transfer components 50 are added, and the rest of the parts are the same as embodiment 1.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high gravity rotating distillation bed, characterized in that: include: body, power input device, gas-liquid channel, rotating tray and mass transfer assembly; The rotating tray is arranged in the machine body, and the power input device drives the rotating tray to rotate; The gas-liquid channel runs through the rotating tray and the body, the upper interface of the gas-liquid channel is a liquid inlet and a gas outlet, and the lower interface is a liquid outlet and a gas inlet; The mass transfer component includes: a stuffing box, a liquid receiving tray, and a liquid distribution tray; A stuffing box is provided in the rotating tray, and the liquid receiving tray is provided at the lower part of the stuffing box; the stuffing box is provided with a lower liquid port, and the stuffing box is connected with the gas-liquid channel through an air outlet provided on the gas-liquid channel; The liquid receiving pan is connected to the gas-liquid channel, and the liquid receiving pan is in communication with the liquid outlet and gas inlet holes provided on the gas-liquid channel; The liquid distribution pan is arranged on the gas-liquid channel and communicated with the stuffing box. The liquid enters the liquid distribution pan through the upper interface, then enters the stuffing box, and finally enters the liquid receiving pan through the lower liquid port, enters the gas-liquid channel through the liquid outlet and air inlet, and is discharged through the lower interface. The rotating tray and the stuffing box rotate synchronously with the power input device; the gas-liquid channel and the liquid distribution tray are both in a stationary state; It also includes a gas-liquid isolation plate, which is arranged on the gas-liquid channel and located between the liquid outlet and the gas inlet and outlet holes; The lower liquid port is located at the outer circumference of the stuffing box; The liquid distribution plate is composed of a liquid collecting ring and a liquid distribution pipe, and the liquid distribution pipe is installed in the circumferential through hole of the gas-liquid channel; The liquid collecting ring is an annular protrusion with a hollow structure in the middle, the diameter of the protrusion is smaller than the diameter of the gas-liquid channel, the outer wall of the protrusion and the inner wall of the gas-liquid channel form an annular liquid collecting trough to collect the liquid flowing downward in the gas-liquid channel; the liquid distribution pipe is located at the bottom of the liquid collecting trough and is installed in the circumferential through hole of the gas-liquid channel, and the outlet of the liquid distribution pipe is close to the stuffing box.

2. The high gravity rotating distillation bed according to claim 1, characterized in that: Also included is an anti-corrosion isolation cover, which is arranged between the rotating tray and the stuffing box.

3. The high gravity rotating distillation bed according to claim 1, characterized in that: The rotating tray includes an upper tray, a lower tray and a tray connecting ring connecting the upper tray and the lower tray.

4. The high gravity rotating distillation bed according to claim 2, characterized in that: A sealing structure is provided at the connection between the anti-corrosion isolation cover and the gas-liquid channel; A sealing structure is provided at the connection between the machine body, the rotating tray and the gas-liquid channel.

5. The high gravity rotating distillation bed according to claim 1, characterized in that: The mass transfer components are provided with N groups, where N=2-12; the gas-liquid channel is a pipeline or a pipeline composed of N pipe sections, where N=2-12.

6. The high gravity rotating distillation bed according to claim 1, characterized in that: There are multiple liquid distribution pipes, which are evenly distributed on the outer periphery of the liquid collecting tank.

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