Rotational flow shearing type supergravity rectifying tower

Abstract

The invention relates to the technical field of rectification equipment, in particular to a rotational flow shearing type supergravity rectification tower which comprises a tower body, a rotating shaft, a driving rotor and a driven rotor, a driving ring on the driving rotor and a driven ring on the driven rotor are matched in a penetrating mode to form a bent baffling channel, and meanwhile, a film forming net on the driven rotor surrounds the driving ring. A stator in an original rotational flow shearing type supergravity rectifying tower is improved, the stator which is originally static is converted into a driven rotor which rotates in the opposite direction of the rotor, meanwhile, a film forming net hung on the driven rotor is used for spraying a liquid film to fisheye spraying holes in a driving rotor, liquid film distribution is further optimized through liquid filaments and liquid drops, and the rectifying efficiency is improved. Meanwhile, the liquid flowing speed is slightly slowed down, so that the shearing action of gas and liquid phases is increased, the mass transfer effect is enhanced, and the rectification efficiency is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of distillation equipment, in particular to a cyclone shearing type ultra-gravity distillation tower. Background Art

[0002] At present, most distillation systems are filled with packing. The working principle of the cyclone shear type ultra-gravity distillation tower is the same as that of ordinary distillation. They are based on the difference in relative volatility (or boiling point) of each component in the solution, and the components are separated through multiple partial condensation and vaporization. The difference is that the cyclone shear type ultra-gravity distillation tower completes this multiple partial condensation and vaporization process in an ultra-gravity field, and the separation efficiency is much better than that of ordinary distillation processes. In essence, in the traditional distillation tower process, the most basic gas-liquid mass transfer unit is the bubble, while in the ultra-gravity rotary distillation process, there are only liquid films, liquid droplets and gas phases filling the packing space in the packing, and there are no bubbles. The basic gas-liquid mass transfer units are liquid films, liquid filaments and liquid droplets.

[0003] Specifically, ordinary distillation towers (plate or packed towers) complete heat and mass transfer between vapor and liquid phases under the action of the earth's gravity field (i.e., under the action of 1g), thereby achieving product component separation. Since the liquid flooding speed of ordinary towers under the gravity field is relatively small, generally within 1.5-1.6m / s, the vapor phase speed must be less than the liquid phase speed, otherwise it will flood, and the distillation operation will not be able to proceed, thereby limiting the increase in the vapor speed in the tower, and the enhancement of the vapor and liquid mass transfer is also limited accordingly; while the "supergravity distillation device" realizes the environment of supergravity field (under the action of 10-1000g) through the centrifugal force generated by high-speed rotation, that is, the supergravity factor β (ω2r / g) is usually about 350-450. In this environment, the speed of vapor and liquid phases is greatly increased, and its speed can reach 4-12m / s, thereby greatly increasing the flooding speed. The liquid in the tower is torn into micron to nanometer-scale liquid films, liquid filaments and droplets at high speed, which greatly enhances the heat and mass transfer process between the vapor and liquid phases, making the mass transfer efficiency more than ten times higher than that of ordinary towers. The equipment volume required for the same production capacity is greatly reduced (the height is reduced by 8-10 times), and the separation effect is also greatly improved (the number of theoretical plates per unit volume is greatly increased, and the height of the theoretical plate is only about 1 cm).

[0004] A cyclone shearing type ultra-gravity distillation tower is disclosed in a Chinese patent application with the patent application number of 201220066902.1, which is the existing conventional cyclone shearing type ultra-gravity distillation tower. However, there are still many problems in the use of this type of tower. 1. After the liquid is centrifugally dispersed, the contact time between the vapor and liquid phases is short under the action of centrifugal force, and the heat transfer and mass transfer time between the vapor and liquid phases are insufficient, and the efficiency still needs to be improved; 2. The gas phase material flows in the reverse direction in the tower. Due to the influence of the centrifugal force of the liquid phase material, the gas phase material has a large resistance to entering the rotor.

[0005] A Chinese patent with patent application number 201910231172.2 discloses a disc for a mixed-flow ultra-gravity rotating bed rotor structure, which allows gaseous matter to enter the rotor from both the radial and axial directions. However, this solution will also cause liquid-phase matter to quickly detach from the rotor from the axial direction.

[0006] Therefore, there is an urgent need for a technical solution for a cyclone shear type ultra-gravity distillation tower with higher heat and mass transfer efficiency and smoother gas flow. Summary of the invention

[0007] In view of the above problems, the present invention provides a cyclone shearing type ultra-gravity distillation tower. By improving the stator in the original cyclone shearing type ultra-gravity distillation tower, the originally stationary stator is transformed into a driven rotor rotating in the opposite direction to the rotor. At the same time, the film-forming net suspended on the driven rotor is used to spray liquid film, liquid filaments and droplets from the fisheye spray holes on the active rotor to further optimize the liquid film distribution, and at the same time slightly slow down the liquid flow rate, so that the shearing effect of the gas and liquid phases is increased, the mass transfer effect is enhanced, and the distillation efficiency is improved.

[0008] To achieve the above object, the present invention provides the following technical solutions: A cyclone shearing type ultra-gravity distillation tower, comprising: Tower body, rotating shaft, driving rotor and driven rotor; The tower body is cylindrical, and a rectification chamber is arranged in the tower body; The rotating shaft is coaxially rotatably mounted on the central axis of the tower body; The active rotor is installed in the distillation chamber, and the active rotor is driven to rotate by the coaxial rotating shaft. The active rotor is upwardly protruding and provided with a plurality of concentrically sleeved active rings, and the side walls of the active rings are provided with outwardly protruding fish-eye spray holes; The driven rotor is suspended above the active rotor, and is driven by the active rotor to rotate in the opposite direction to the active rotor. The driven rotor protrudes downward and is provided with a plurality of concentrically sleeved driven circles, which are interlaced with the active circles to form a bent baffle channel. The driven rotor protrudes downward and is provided with a film-forming net corresponding to the corresponding active circle, and a plurality of film-forming meshes are evenly distributed on the film-forming net.

[0009] As an improvement, the film-forming net and the active ring are eccentrically arranged, and the inner wall of the film-forming net is tangent to the outer wall of the active ring.

[0010] As an improvement, a gas phase outlet is provided at the top of the tower body, a gas phase inlet and a residual liquid inlet are provided at the bottom of the tower body, and a plurality of liquid phase feed inlets are provided at equal intervals in the vertical direction on the side wall of the tower body, a reflux port is provided above the liquid phase feed inlet, and a liquid phase feed pipe installed at the liquid phase feed inlet extends toward the center of the tower body, and the outlet of the liquid phase feed pipe is located at the center of the active rotor; A tower top thermometer and a tower bottom thermometer are respectively arranged at the top and the bottom of the tower body.

[0011] As an improvement, the rotating shaft is driven by a driving device arranged at the bottom of the tower body, which includes a driver and a transmission unit. The driver is installed on one side of the tower body, and the driver is connected to the rotating shaft through the bottom of the tower body through the transmission unit.

[0012] As an improvement, the rotating shaft is provided with a guide blade at the center of the active rotor, and the guide blade rotates synchronously with the rotating shaft.

[0013] As an improvement, the driving rotor and the driven rotor are transmission-connected via a planetary gear set disposed at the rotating shaft, and the angular speed ratio between the driving rotor and the driven rotor is 6:1-3:1.

[0014] As an improvement, inclined guide vanes are provided on the side walls of the driven ring located on the outer ring of the driven rotor. When the driven rotor rotates, the guide vanes rotate to inhale the gas below.

[0015] As an improvement, an oblique exhaust waist hole is arranged at the center position of the driven rotor, and an air dispersion impeller is arranged above the exhaust waist hole.

[0016] As an improvement, a liquid surrounding plate is arranged around the exhaust waist hole at the center position of the driven rotor, and adjacent exhaust waist holes are separated by liquid partition plates, and the outlet of the liquid phase feed pipe is located above the area surrounded by the liquid surrounding plate.

[0017] As an improvement, a roller seat for bearing the rotation of the driven rotor is arranged at the outer circumferential edge of the driven rotor, and the roller seat is fixedly connected to the inner side wall of the tower body; The outer circumference of the driven rotor is provided with communication holes at equal intervals, and the outer sides of the communication holes are surrounded by inclined flanges.

[0018] The beneficial effects of the present invention are: (1) The present invention improves the stator in the original cyclone shearing type ultra-gravity distillation tower, so that the originally stationary stator is transformed into a driven rotor that rotates in the opposite direction to the rotor. At the same time, the film-forming net suspended on the driven rotor is used to spray liquid film, liquid filaments and liquid droplets from the fisheye spray holes on the active rotor to further optimize the distribution of the liquid film, and at the same time slightly slow down the liquid flow rate, so that the shearing effect of the gas and liquid phases is increased, the mass transfer effect is enhanced, and the distillation efficiency is improved; (2) In the present invention, when the film-forming net rotating with the driven rotor optimizes the distribution of the liquid film, the radial velocity of the liquid is slowed down, but the increase in the angular velocity of the film-forming net relative to the active ring increases the circumferential velocity of the liquid. Therefore, the liquid flow velocity does not change much, nor does it produce too much resistance to the flow of the liquid. It only changes the flow direction of the liquid, and can still well ensure that the gas phase velocity is less than the liquid phase velocity to avoid flooding. At the same time, the film-forming net changes the radial and circumferential velocities of the liquid, and can also well increase the heat transfer and mass transfer time, thereby further improving the distillation efficiency. (3) When setting the film-forming net, the present invention fully considers the problem of high-viscosity materials blocking the film-forming net. The film-forming net and the corresponding active ring are innovatively designed to be eccentrically tangent. The fisheye spray holes set on the active ring are used to scrape the film-forming net to remove high-viscosity materials and ensure the circulation of the film-forming net. There is no need to frequently clean and replace the film-forming net. At the same time, the crescent area between the eccentrically set film-forming net and the active ring can optimize the distribution of liquid film, liquid filaments and droplets, and can also drive the entry of gas phase substances, thereby reducing the flow resistance of gas phase substances. (4) The present invention is designed to rotate the driven rotor (i.e., the stator in the original cyclone shear type ultra-gravity distillation tower) so that the guide vanes at the outer circumferential edge of the moving blade rotor can suck the external gas phase material into the baffle channel, thereby increasing the input speed of the gas phase material, so that the baffle channel is filled with more gas phase material and the liquid phase material undergoes heat and mass transfer reactions. At the same time, the liquid phase material will not leave the baffle channel too quickly.

[0019] In summary, the present invention has the advantages of strong shearing effect, good mass transfer effect, high distillation efficiency, etc., and is particularly suitable for the technical field of cyclone shearing type ultra-gravity distillation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the cross-sectional structure of the tower body of the present invention; Figure 2 It is a schematic diagram of the internal structure of the tower body of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the baffle channel of the present invention; Figure 4 The three-dimensional structure of the driven rotor of the present invention is shown in FIG. Figure 1 ; Figure 5It is a schematic diagram of the three-dimensional structure of the planetary gear set of the present invention; Figure 6 The three-dimensional structure of the driven rotor of the present invention is shown in FIG. Figure 2 ; Figure 7 It is a schematic diagram of the inverted three-dimensional structure of the driven rotor of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the active rotor of the present invention; Fig. 9 for Figure 8 Schematic diagram of the structure at A in the middle; Fig.10 This is a schematic diagram of the coordination structure between the active coil and the film-forming net of the present invention; Fig.11 It is a schematic diagram of the coordination structure of the fisheye spray hole and the film-forming mesh of the present invention.

[0021] Reference numerals in the figure: baffle channel 001, tower body 1, distillation chamber 10, gas phase outlet 11, gas phase inlet 12, residual liquid port 13, liquid phase feed port 14, liquid phase feed pipe 141, reflux port 15, tower top thermometer 16, tower bottom thermometer 17, rotating shaft 2, guide blade 21, active rotor 3, active ring 31, fisheye spray hole 311, driven rotor 4, driven ring 41, guide blade 411, film forming net 42, film forming mesh 421, exhaust waist hole 43, gas diffusion impeller 44, liquid surrounding plate 45, liquid partition plate 46, connecting hole 47, flange 48, driving device 5, driver 51, transmission unit 52, planetary gear set 6, roller seat 7. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships 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 referred device or element 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.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] Embodiment 1: like Figures 1 to 11 As shown, a cyclone shearing type ultra-gravity distillation tower comprises: Tower body 1, rotating shaft 2, driving rotor 3 and driven rotor 4; The tower body 1 is cylindrical, and a distillation chamber 10 is arranged inside the tower body 1; The rotating shaft 2 is coaxially rotatably mounted on the central axis of the tower body 1; The active rotor 3 is installed in the distillation chamber 10, and the active rotor 3 is driven to rotate by the coaxial rotating shaft 2, and the active rotor 3 is upwardly protruding and provided with a plurality of concentrically sleeved active rings 31, and the side walls of the active rings 31 are provided with outwardly protruding fish-eye spray holes 311; The driven rotor 4 is suspended above the active rotor 3, and is driven by the active rotor 3 to rotate in the opposite direction to the active rotor 3. The driven rotor 4 protrudes downward and is provided with a plurality of concentrically sleeved driven circles 41. The driven circles 41 and the active circles 31 are interlaced and cooperated with each other to form a bent deflection channel 001. The driven rotor 4 protrudes downward and is provided with a film-forming net 42 corresponding to the corresponding active circle 31, and the film-forming net 42 is evenly distributed with a plurality of film-forming meshes 421.

[0026] The film-forming net 42 and the active ring 31 are eccentrically arranged, and the inner wall of the film-forming net 42 is tangent to the outer wall of the active ring 31 .

[0027] It should be noted that, when the driven rotor 4 in the present application (i.e., the stator in the original cyclone shear type ultra-gravity distillation tower) rotates, the driven circle 41 thereon has the same effect as the stator, and still surrounds the active circle 31 to form a bent deflection channel 001. Therefore, the rotation of the driven rotor 4 will not have any influence on the distillation work of the cyclone shear type ultra-gravity distillation tower.

[0028] Furthermore, it should be noted that the setting of the film-forming net 42, due to its mesh structure and its film-forming mesh 421 is bound to be smaller than the fisheye nozzle 311, will cause blockage of the flow of gas-phase materials, and will also cause the film-forming mesh 421 to be blocked by viscous materials. However, in the present application, an innovative structure in which the film-forming net 42 and the active ring 31 are eccentrically set is adopted. This structure improves the fluidity of the gas-phase material. Specifically, when the eccentric setting structure of the film-forming net 42 rotates, it will destroy the original gas-phase flow in the deflection channel 001, and then scoop the gas-phase material into the crescent area to form a mass transfer reaction with the liquid film, liquid droplets, and liquid filaments, thereby promoting the fluidity of the gas-phase material.

[0029] Furthermore, the tangency of the inner wall of the film-forming net 42 and the outer wall of the active circle 31 recorded in the present application means that the film-forming net 42 and the fisheye spray holes 311 on the active circle 31 are in a state of approaching each other. During the reverse rotation of the active circle 31 and the film-forming net 42, the part of the fisheye spray holes 311 protruding from the active circle 31 will effectively remove the material adhering to the film-forming net 42. In addition, the reverse rotation of the film-forming net 42 enables all the fisheye spray holes 311 on the active circle 31 to play a role in cleaning the film-forming net 42, rather than relying solely on a group of fisheye spray holes 311 on the active circle 31 for cleaning, thereby ensuring the normal circulation of the fisheye spray holes 311.

[0030] It should also be emphasized that the specific structure of the fisheye spray hole 311 has been disclosed in the Chinese patent application No. 201220066902.1, and will not be described in detail in this application.

[0031] Embodiment 2: With reference to Example 1, the differences between Example 2 of the present invention and Example 1 are as follows: like Figure 1 As shown, as a preferred embodiment, a gas phase outlet 11 is provided at the top of the tower body 1, and a gas phase inlet 12 and a residual liquid inlet 13 are respectively provided at the bottom of the tower body 1, the gas phase outlet 11 and the gas phase inlet 12 are arranged diagonally, and a plurality of liquid phase feed ports 14 are equidistantly arranged on the side wall of the tower body 1 in the vertical direction, a reflux port 15 is arranged above the liquid phase feed port 14, and a liquid phase feed pipe 141 installed at the liquid phase feed port 14 extends toward the center of the tower body 1, and the outlet of the liquid phase feed pipe 141 is located at the center of the active rotor 3. It should be noted that the liquid phase feed pipe 141 in the present application is preferably arranged in three groups, and three groups of active rotors 3 and driven rotors 4 are respectively arranged in the distillation chamber 10, thereby forming three groups of baffle channels 001 corresponding to the liquid phase feed pipe 141, so that the distillation efficiency of the swirl shear type ultra-gravity distillation tower is increased by multiples; In addition, in order to monitor the temperature in the distillation chamber 10 well, a tower top thermometer 16 and a tower bottom thermometer 17 are respectively provided at the top and the bottom of the tower body 1 .

[0032] It should be noted that the gas phase material is input from the gas phase inlet 12, reversely upward from the bottom of the tower body 1, and after heat transfer and mass transfer reaction with the liquid phase material, the gas phase material is output from the gas phase outlet 11 at the top of the tower body 1, and the liquid phase material is directly transported to the center of the active rotor 3 through the liquid phase feed port 14 and the liquid phase feed pipe 141, and then the active rotor 3 breaks up the liquid phase material through centrifugal action to form droplets, liquid filaments and liquid films, and the remaining liquid port 13 is used to remove the liquid phase material in the distillation chamber 10, and the reflux port 15 is to return part of the top distillate to the distillation tower, so that the reflux liquid is fully in contact with the rising steam on the tower plate or packing layer. In this way, the mass transfer area and mass transfer time of the gas-liquid two phases can be increased, and the driving force for the material exchange in the distillation process is provided, thereby improving the separation effect. By adjusting the reflux amount of the reflux port, the gas-liquid balance and mass transfer efficiency in the distillation tower can be controlled to achieve the expected product purity and recovery rate.

[0033] Embodiment 3: With reference to Example 1, the differences between Example 3 of the present invention and Example 1 are as follows: like Figure 1 As shown, the rotating shaft 2 is driven by a driving device 5 arranged at the bottom of the tower body 1. The driving device 5 includes a driver 51 and a transmission unit 52. The driver 51 is installed on one side of the tower body 1. The driver 51 is connected to the rotating shaft 2 through the bottom of the tower body 1 through the transmission unit 52.

[0034] Specifically, the driver 51 is preferably a three-phase asynchronous motor, and the transmission unit 52 is preferably a belt transmission unit. The driver 51 drives the shaft 2 to rotate in the tower body 1 through the transmission unit 52, and the shaft 2 is rotationally sealed at the rotationally matched part of the tower body 1 through a liquid sealing structure.

[0035] Embodiment 4: With reference to Example 1, the differences between Example 4 of the present invention and Example 1 are as follows: like Figure 3 As shown, the rotating shaft 2 is provided with a guide blade 21 at the center of the active rotor 3 , and the guide blade 21 rotates synchronously with the rotating shaft 2 .

[0036] It should be noted here that the setting of the guide blades 21 needs to depend on the viscosity and fluidity of the liquid material. For liquid materials with high viscosity and poor fluidity, the centrifugal force of the liquid material can be enhanced by setting the guide blades 21, while at the same time enhancing the suction force on the gas material and improving the fluidity of the gas material in the deflection channel. However, due to the excessively high rotation speed of the rotating shaft 2, the rotation frequency of the guide blades 21 is too high. For liquid materials with low viscosity and good fluidity, the gas flow rate will increase, which is not conducive to the stability of the liquid dynamic balance.

[0037] Embodiment 5: With reference to Example 1, the differences between Example 5 of the present invention and Example 1 are as follows: like Figure 5 As shown, preferably, the driving rotor 3 and the driven rotor 4 are connected to each other through a planetary gear set 6 arranged at the rotating shaft 2, and the angular speed ratio of the driving rotor 3 to the driven rotor 4 is 6:1-3:1; It should be noted that the planetary gear set 6 in the present application is composed of a sun gear, planetary gears and a ring gear, wherein the sun gear is sleeved on the rotating shaft 2, and the planetary gears are arranged equidistantly around the sun gear. The planetary gears are mounted and connected to the side wall of the tower body 1 through a fixed mounting plate, and the ring gear is coaxially connected to the driven rotor. Through the gear transmission unit, the active rotor 3 rotates to drive the driven rotor 4 to rotate in the opposite direction, and through the deceleration of the planetary gear set 6, the rotation speed of the driven rotor 4 is much lower than the rotation speed of the active rotor 3, thereby preventing the high-speed rotating film-forming network from hindering the flow of gas-phase materials.

[0038] Embodiment 6: With reference to Example 1, the differences between Example 6 of the present invention and Example 1 are as follows: like Figure 6 As shown, an inclined guide vane 411 is provided on the side wall of the driven ring 41 located on the outer ring of the driven rotor 4. When the driven rotor 4 rotates, the guide vane 411 rotates to inhale the gas below.

[0039] It should be noted that, through the rotation of the driven rotor 4 and the setting of the guide blades 411, the outer circumferential edge of the driven rotor 4 can continuously absorb gaseous materials, thereby increasing the speed and efficiency of the gaseous materials entering the deflection channel 001 and improving the distillation efficiency of the gaseous materials and liquid materials.

[0040] Embodiment 7: With reference to Example 1, the differences between Example 7 of the present invention and Example 1 are as follows: like Figures 4 to 6 As shown, an oblique exhaust waist hole 43 is arranged at the center of the driven rotor 4 , and a diffuser impeller 44 is arranged above the exhaust waist hole 43 .

[0041] Among them, a liquid surrounding plate 45 is arranged around the exhaust waist hole 43 at the center position of the driven rotor 4, and adjacent exhaust waist holes 43 are separated by a liquid partition plate 46. The outlet of the liquid phase feed pipe 141 is located above the area surrounded by the liquid surrounding plate 45, and the liquid phase feed pipe 141 inputs liquid phase material through one group of exhaust waist holes 43.

[0042] Furthermore, a roller seat 7 for bearing the rotation of the driven rotor 4 is disposed at the outer circumferential edge thereof, and the roller seat 7 is fixedly connected to the inner side wall of the tower body 1; In addition, communication holes 47 are equidistantly formed along the outer circumference of the driven rotor 4 , and an inclined flange 48 surrounds the outer side of the communication hole 47 .

[0043] It should be noted that the gaseous material entering the deflection channel 001 is eventually discharged outward through the exhaust waist hole 43. In order to improve the fluidity of the gaseous material, a diffuser impeller 44 is arranged above the exhaust waist hole 43. The rotation of the diffuser impeller 44 allows the gas at the exhaust waist hole 43 to escape quickly.

[0044] It should be further explained that, in order to improve the rotational stability of the driven rotor 4 , a roller seat 7 is provided on the outer circumferential edge of the driven rotor 4 , and the load-bearing and rolling characteristics of the roller seat 7 are utilized to ensure the stable operation of the driven rotor 4 .

[0045] It is further explained that the gas phase material and the liquid phase material flow through the connecting hole 47 between the driving rotor and the driven rotor of each layer, so that the liquid phase material of the upper layer can be discharged to the lower layer, and the gas phase material of the lower layer can flow back to the upper layer.

[0046] Application Example 1: The invention relates to an ammonia water recovery system using the cyclone shearing type ultra-gravity distillation tower of the present application. The low-concentration waste ammonia water generated in the production process can be distilled and concentrated by the ammonia water recovery system into industrial ammonia water with an ammonia content of more than 20% for recycling.

[0047] Specifically, in this application example, the waste ammonia water contains about 5% ammonia, and the concentration of the ammonia water product after distillation is 23-30%. The use of multiple layers of active rotors and transmission rotors has high mass transfer efficiency, convenient material input and output, and continuous recovery. The waste liquid at the bottom of the tower contains low material, the product concentration is stable, the distillation efficiency is high, and the operating cost is low. Under the same conditions, the existing cyclone shear type ultra-gravity distillation tower can achieve a product ammonia water concentration of 17-25% after distillation.

[0048] Application Example 2: The invention relates to a solvent recovery system using the cyclone shearing type ultra-gravity distillation tower of the present application, which is suitable for the recovery and concentration of low-concentration solvents such as methanol, ethanol, acetone, etc. For example, when the solvent recovery system of the present application recovers ethanol, the recovery rate is greater than 97.5%, while the existing cyclone shearing type ultra-gravity distillation tower can only achieve a recovery rate of 95%, and the solvent concentration in the discharged wastewater can reach below 0.5%.

[0049] In addition, due to the small volume of the tower and the absence of fillers, the retained liquid is small and the liquid holding time is short, generally only 1 to 5 minutes, thereby achieving an energy saving effect of 10-30%.

[0050] Compared with the traditional packed tower, the volume and height of the cyclone shearing ultra-gravity distillation tower of the present application are much smaller. The specific comparison data are as follows: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cyclone shearing type ultra-gravity distillation tower, characterized in that: include: A tower body (1), a rotating shaft (2), a driving rotor (3) and a driven rotor (4); The tower body (1) is arranged in a cylindrical shape, and a distillation chamber (10) is arranged inside the tower body (1); The rotating shaft (2) is coaxially rotatably mounted on the central axis of the tower body (1); The active rotor (3) is installed in the distillation chamber (10), the active rotor (3) is driven to rotate by the coaxial rotating shaft (2), and the active rotor (3) is upwardly protruding and provided with a plurality of concentrically sleeved active rings (31), and the side walls of the active rings (31) are each provided with outwardly protruding fish-eye spray holes (311); The driven rotor (4) is suspended above the active rotor (3), the driven rotor (4) is driven by the active rotor (3) and is arranged to rotate in the opposite direction to the active rotor (3), and the driven rotor (4) is protruding downwards and is provided with a plurality of concentrically sleeved driven circles (41), the driven circles (41) and the active circles (31) are interlaced and matched with each other to form a bent baffle channel (00), and the driven rotor (4) is protruding downwards and is provided with a film-forming net (42) corresponding to the corresponding active circle (31) and is sleeved around, and the film-forming net (42) is evenly distributed with a plurality of film-forming meshes (421).

2. A cyclone shearing type ultra-gravity distillation tower according to claim 1, characterized in that: The film-forming net (42) and the active ring (31) are eccentrically arranged, and the inner side wall of the film-forming net (42) is tangentially arranged to the outer side wall of the active ring (31).

3. A cyclone shearing type ultra-gravity distillation tower according to claim 1, characterized in that: The top of the tower body (1) is provided with a gas phase outlet (11), the bottom of the tower body (1) is provided with a gas phase inlet (12) and a residual liquid outlet (13), and a plurality of liquid phase feed inlets (14) are equidistantly arranged on the side wall of the tower body (1) in the vertical direction, a reflux port (15) is arranged above the liquid phase feed inlet (14), and a liquid phase feed pipe (141) installed at the liquid phase feed inlet (14) extends toward the center of the tower body (1), and the outlet of the liquid phase feed pipe (141) is located at the center of the active rotor (3); A tower top thermometer (16) and a tower bottom thermometer (17) are respectively arranged at the top and the bottom of the tower body (1).

4. A cyclone shearing type ultra-gravity distillation tower according to claim 1, characterized in that: The rotating shaft (2) is driven by a driving device (5) arranged at the bottom of the tower body (1), the driving device (5) comprising a driver (51) and a transmission unit (52), the driver (51) being installed at one side of the tower body (1), and the driver (51) being connected to the bottom of the rotating shaft (2) passing through the tower body (1) through the transmission unit (52).

5. The cyclone shearing type ultra-gravity distillation tower according to claim 1, characterized in that: The rotating shaft (2) is provided with a guide blade (21) at the center of the active rotor (3), and the guide blade (21) rotates synchronously with the rotating shaft (2).

6. The cyclone shearing type ultra-gravity distillation tower according to claim 1, characterized in that: The driving rotor (3) and the driven rotor (4) are transmission-connected via a planetary gear set (6) disposed at the rotating shaft (2), and the angular speed ratio between the driving rotor (3) and the driven rotor (4) is 6:1-3:

1.

7. The cyclone shearing type ultra-gravity distillation tower according to claim 1, characterized in that: Inclined guide vanes (411) are provided on the side walls of the driven ring (41) located on the outer ring of the driven rotor (4); when the driven rotor (4) rotates, the guide vanes (411) rotate to inhale gas below.

8. The cyclone shearing type ultra-gravity distillation tower according to claim 3, characterized in that: An oblique exhaust waist hole (43) is provided at the center of the driven rotor (4), and a diffuser impeller (44) is provided above the exhaust waist hole (43).

9. A cyclone shearing type ultra-gravity distillation tower according to claim 8, characterized in that: A liquid surrounding plate (45) is provided around the exhaust waist hole (43) at the center position of the driven rotor (4), and adjacent exhaust waist holes (43) are separated by liquid partition plates (46), and the outlet of the liquid phase feed pipe (141) is located above the area surrounded by the liquid surrounding plate (45).

10. The cyclone shearing type ultra-gravity distillation tower according to claim 1, characterized in that: A roller seat (7) for supporting the rotation of the driven rotor (4) is arranged at the outer circumferential edge of the driven rotor (4), and the roller seat (7) is fixedly connected to the inner side wall of the tower body (1); The outer circumference of the driven rotor (4) is provided with communication holes (47) at equal intervals, and the outer sides of the communication holes (47) are surrounded by inclined flanges (48).

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