Anti-blocking rectifying column

Abstract

The application provides a kind of anti-blocking rectifying tower, belongs to rectifying tower technical field, including tray, the valve hole is opened in the tray;Rotary assembly, including outer ring and inner ring, the outer ring is fixedly installed in the inner wall of valve hole, the inner ring is rotatably connected in the inside of outer ring, the lower surface of the inner ring is provided with driving impeller, for driving the rotation of inner ring, the inner ring is radially provided with rotating shaft, a plurality of float valves are axially rotatably arranged on the rotating shaft, each float valve is sealed and matched with the upper surface of inner ring when rotating to horizontal state, and the side edges of adjacent two float valves abut each other to form closed structure, the lower surface of the float valve is fixedly provided with gas distribution cover, and the side wall and bottom wall of gas distribution cover are provided with dispersion hole;The application can solve the problem that the float valve of rectifying tower is easy to be stuck due to impurity adhesion and accumulation when contacting with liquid phase, the self-cleaning effect is weak, thereby affecting the gas-liquid mass transfer efficiency and stable operation of equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rectifying column, in particular to a kind of anti-blocking rectifying column. BACKGROUND

[0002] As an important gas-liquid contact device, rectifying column plays an indispensable role in modern industrial production. Rectifying column realizes the separation of mixture based on the difference in volatility of components, and provides high-purity product solutions for various industries through precise temperature control and mass transfer process. Currently, the common rectifying columns on the market mainly include plate column and packed column. In plate column, gas-liquid two phases make multiple countercurrent contact, and gas-liquid two phases generally make cross flow on each plate. In packed column, gas-liquid two phases make continuous countercurrent contact.

[0003] The plate column family includes bubble column, sieve plate column, float valve column and other typical structures. Float valve plate type rectifying column, as the mainstream model, has significant technical advantages: its unique float valve structure can automatically adjust the opening according to gas velocity, greatly improving the flexibility of column operation. Compared with sieve plate column with fixed hole diameter, float valve column significantly improves gas-liquid contact efficiency, especially in low gas velocity conditions. The complex gas lift pipe components of bubble column are cancelled in the structural design, combining high efficiency and economy. However, when dealing with complex materials containing impurities, solid particles or high viscosity components are easy to adhere and accumulate in the valve hole and float valve guide groove of the column plate. With the extension of running time, the float valve is gradually jammed and fails, which further leads to instability of the entire production process, increasing the cost of equipment maintenance and the risk of production interruption.

[0004] Referring to the Chinese patent document with publication number CN119565199B and publication date May 30, 2025, entitled "Rectifying column with anti-blocking structure", it includes a column plate, a sieve hole is formed on the column plate; a floating ball is arranged on the upper side of the sieve hole, the diameter of the floating ball is larger than the diameter of the sieve hole, and a plurality of concaves are formed on the peripheral wall of the floating ball; a plurality of elastic arc plates are fixed on the upper side of the sieve hole in a central symmetric manner, the upper end of the plurality of elastic arc plates forms an open end with a diameter smaller than that of the floating ball, a gap is formed between the inner wall of the elastic arc plate and the peripheral wall of the floating ball.

[0005] Referring to the above technical solution, through the cooperation of the floating ball and the elastic arc plate, the elastic arc plate can continuously vibrate during the rolling process of the floating ball, reducing the probability of column plate blockage. When facing some materials with high viscosity, high impurity content or special chemical properties, scaling phenomenon will inevitably occur on the surface of the elastic arc plate. Relying solely on the vibration of the elastic arc plate, it is difficult to remove the scaling impurities. After a long time of accumulation, the gap between the two adjacent elastic arc plates is reduced, affecting the normal flow of gas phase, and the anti-blocking effect is not ideal. SUMMARY

[0006] In view of this, this application provides an anti-clogging distillation column, which aims to solve the problem that the existing distillation column float valve is prone to jamming due to the adhesion and accumulation of impurities when in contact with the liquid phase, resulting in weak self-cleaning effect, thereby affecting the gas-liquid mass transfer efficiency and stable operation of the equipment.

[0007] To solve the above-mentioned technical problems, this application provides an anti-clogging distillation column, comprising:

[0008] The tower plate has valve holes.

[0009] The rotating assembly includes an outer ring and an inner ring. The outer ring is fixedly installed on the inner wall of the valve hole, and the inner ring is rotatably connected to the inside of the outer ring. A drive impeller is provided on the lower surface of the inner ring for driving the inner ring to rotate. A rotating shaft is provided radially on the inner ring, and multiple float valves are axially rotatably mounted on the rotating shaft. When each float valve rotates to a horizontal state, it forms a sealing fit with the upper surface of the inner ring, and the sides of two adjacent float valves abut against each other to form a closed structure.

[0010] By adopting the above technical solution, when the gas phase rises from the middle of the tower, the uneven flow rate and distribution will generate a pressure difference between the two ends of the float valve. One side of the float valve is pushed and rotates around the rotating shaft, making the inner ring connected from top to bottom, and the gas phase contacts the liquid phase of the tower plate for mass transfer. The greater the flow rate, the greater the pressure difference, the greater the torsion angle of the float valve, and the more float valves on the same rotating shaft open, thereby realizing adaptive adjustment of the valve orifice opening according to the gas phase flow rate. This adaptive mechanism stabilizes the gas flow rate within a reasonable range, preventing a decrease in mass transfer efficiency due to sudden changes in flow rate. When the gas phase flow rate decreases, the float valve falls back, reducing the valve orifice opening and maintaining dynamic flow rate balance. In addition, the drive impeller can be pushed by the rising gas phase, causing the inner ring to rotate, which in turn causes the float valve and gas distribution hood to rotate circumferentially. On the one hand, the shear force of the gas phase spray carries away solid particles, reducing precipitation and accumulation around the inner ring; on the other hand, it disperses the gas phase into the liquid phase from different circumferential directions, improving the uniformity of gas-liquid mass transfer. The structural design takes into account both anti-clogging and mass transfer efficiency improvement. In particular, during the opening, closing, and swinging process of the float valve, the sides of adjacent float valves scrape against each other, and the upper surface of the inner ring forms a scraping fit with the end face of the float valve, which can effectively remove a small amount of solid impurities adhering to the side wall and end face of the float valve. This prevents impurities from accumulating for a long time, which would increase the adhesion strength and cause the float valve to jam, affecting its normal rotation. This further enhances the anti-clogging effect from a mechanical structure perspective.

[0011] Optionally, a gas distribution hood is fixedly provided on the lower surface of the float valve. The side wall and bottom wall of the gas distribution hood are provided with dispersion holes. The bottom wall of the gas distribution hood is slidably fitted with the inner spherical surface of the inner ring.

[0012] By adopting the technical scheme, the dispersion holes of the gas distribution cover can disperse the gas phase into fine bubbles, increase the contact area with the liquid phase, and significantly improve the mass transfer efficiency. When the float valve rotates around the rotating shaft, the synchronous rotation of the gas distribution cover with the float valve is ensured by the sliding connection between the bottom wall and the inner spherical surface of the inner ring. At the same time, the bottom walls of adjacent gas distribution covers cooperate to form a spherical surface structure, which can guide the uniform diffusion of the gas phase and avoid the concentration of gas flow, thereby preventing the local mass transfer efficiency from decreasing.

[0013] Optionally, the gas distribution cover is movably provided with a balance weight ball inside, and when the float valve rotates around the axis of the rotating shaft, the balance weight ball rolls inside the gas distribution cover.

[0014] By adopting the technical scheme, when the float valve is inclined due to the gas phase thrust, the balance weight ball rolls in the gas distribution cover along the inclined direction, and the center of gravity offset generates a restoring torque around the rotating shaft. When the flow rate decreases, the restoring torque overcomes the residual pressure of the gas flow, so that the float valve is quickly restored to the horizontal state, the restoring time is shortened, and liquid leakage caused by slow float valve restoration is avoided. In addition, the presence of the balance weight ball increases the inertia resistance when the float valve rotates, which can inhibit the frequent oscillation of the float valve caused by gas flow fluctuations, so that the valve hole opening adjustment is more stable. This restoring mechanism based on gravity eccentricity does not require additional power and realizes self-adaptive restoration through structural design.

[0015] Optionally, the outer surface of the balance weight ball is uniformly provided with protrusions, and the protrusions can be inserted into the inside of the dispersion hole when the balance weight ball rolls.

[0016] By adopting the technical scheme, during the rolling process of the balance weight ball, the surface protrusions are randomly inserted into the inner wall of the dispersion hole, and the accumulated solid particles, crystalline substances and other impurities are pushed out by using the rigidity extrusion and friction of the protrusions, so that the impurities are stripped from the hole to avoid the blockage of the hole caused by the accumulation of impurities. The restoring function of the balance weight ball is combined with the anti-blocking function to form an integrated mechanism of restoring and cleaning. In addition, the slight vibration generated when the protrusions are inserted into the dispersion hole can also accelerate the separation of impurities from the gas distribution cover, further enhance the anti-blocking effect, and ensure the long-term smoothness of the gas distribution system.

[0017] Optionally, the lower surface of the outer ring is circumferentially and uniformly provided with arc-shaped baffles, and gaps are formed between the inner arc surfaces of the arc-shaped baffles and the outer arc surfaces of the bottom walls of the gas distribution cover.

[0018] By adopting the technical scheme, when the gas phase pushes one side of the float valve to lift, the other side falls, the gas flow on the falling side is blocked by the arc-shaped baffle and changes the flow direction, so that the gas phase is more evenly dispersed in the liquid phase, and the mass transfer efficiency is improved. At the same time, when the gas distribution cover rotates with the inner ring, the gap between the arc-shaped baffle and the bottom wall of the gas distribution cover forms a scraping area, the inner arc surface of the arc-shaped baffle can scrape off the part of the particle impurities attached to the surface of the gas distribution cover and pushed out by the protrusion, so as to avoid that the thick particle accumulation affects the rotation of the gas distribution cover or blocks the dispersion hole. The arc-shaped baffles are uniformly arranged in the circumferential direction, so as to ensure the cleaning of the whole circumferential direction of the gas distribution cover. The relative movement between the arc-shaped baffles and the gas distribution cover forms a dynamic anti-blocking mechanism, cooperates with the internal scraping of the balance weight, realizes the effect of double anti-blocking of the inner and outer parts, and significantly improves the anti-blocking ability of the equipment.

[0019] Optionally, the driving impeller comprises connecting pieces, a fixed shaft and blades, the connecting pieces are arranged in an axial array on the lower surface of the inner ring, the fixed shaft is fixedly connected with the bottom end of the connecting pieces, and the blades are uniformly arranged on the outer arc surface of the fixed shaft in the circumferential direction.

[0020] By adopting the technical scheme, the gas phase that rises pushes the blades to rotate, and drives the inner ring to rotate through the fixed shaft and the connecting pieces. The rotation of the blades converts the kinetic energy of the gas phase into the rotational power of the inner ring, so as to make the float valve and the gas distribution cover rotate in the circumferential direction, and make the gas phase enter the liquid phase from different directions in the circumferential direction of the inner ring, so as to avoid that the concentrated gas flow causes uneven gas-liquid contact on the surface of the tray. On the other hand, the blades have a dispersing effect on the gas phase, can balance the gas flow velocity distribution, and reduce the mass transfer efficiency fluctuation caused by the flow velocity difference. In addition, the connecting pieces are located between the gas distribution cover and the arc-shaped baffle, so as to avoid interference with the arc-shaped baffle. When the connecting pieces rotate, the gas flow in the gap between the gas distribution cover and the arc-shaped baffle can be disturbed, the turbulence effect is enhanced, and the gas-liquid mixing effect is further improved. When the inner ring rotates, the float valve swings irregularly due to uneven gas distribution, so as to reduce the deposition probability of solid particles on the surface of the dispersion hole. In cooperation with the scraping effect of the arc-shaped baffle, a synergistic mechanism of rotating dispersion, swing anti-blocking and turbulence enhancement is formed, so as to drive the double improvement of anti-blocking and mass transfer efficiency from the power level.

[0021] Optionally, the upper surface of the inner ring is provided with a scraping strip in the circumferential direction, and the outer end of the scraping strip extends in the form of an involute.

[0022] By adopting the technical scheme, when the inner ring rotates, the scraping strip rotates with the inner ring, the scraping strip generates a radial thrust on the solid particles on the surface of the tray around the inner ring, the solid particles are pushed away radially from the valve hole, accumulation of the particles around the valve hole is avoided, the design of the involute shape makes the thrust direction of the particles change gradually during the rotation of the scraping strip, the particles at different positions can be cleaned more efficiently, and the cleaning range is improved. In addition, the liquid phase on the tray is disturbed when the scraping strip rotates, the degree of liquid turbulence is increased, the gas-liquid interface is updated, the mass transfer between the gas phase and the liquid phase is more sufficient, the scraping strip combines the mechanical cleaning function and the flow field optimization function, the blockage problem around the valve hole is solved, the mass transfer efficiency is improved through the flow field disturbance, and multi-functional integration of the structural design is realized.

[0023] Optionally, the tower body is further provided, the tower body is provided with an inner wall, the tower plates are arranged on the inner wall along the height direction of the tower body, and the overflow weirs are arranged on one side of the tower plates.

[0024] By adopting the technical scheme, the overflow weirs are arranged on the opposite sides of the tower body axis, the flow path of the liquid phase on the tower plate is lengthened, the gas-liquid contact time and area are increased, and therefore the component separation effect is improved.

[0025] Optionally, the lower surfaces of the overflow weirs are flush with the upper surfaces of the adjacent overflow weirs below, the height difference of the liquid falling is reduced, the impact disturbance is reduced, and the decrease of the gas-liquid contact efficiency caused by the uneven liquid level distribution on the tower plate is avoided.

[0026] Optionally, the outer arc surfaces of the tower body are uniformly and fixedly provided with mounting seats in the circumferential direction, hoisting and fixing of the equipment are facilitated, stability of the tower body during operation is ensured, and reliable structural support is provided for the internal gas-liquid mass transfer.

[0027] Compared with the prior art, the present application has at least one of the following beneficial technical effects:

[0028] 1. When the gas phase rises from the middle of the tower body, the floating valve is rotated and lifted around the rotating shaft on one side by the thrust force, the inner ring is connected with the upper and lower parts, the valve hole opening is self-adaptively adjusted according to the gas phase flow, the gas flow rate is stabilized in a reasonable range, when the gas phase flow rate decreases, the floating valve falls back, the valve hole opening is reduced, the flow rate dynamic balance is maintained, in addition, the driving impeller can be pushed by the rising gas phase, the inner ring is rotated, the floating valve and the gas distribution cover are rotated in the circumferential direction, on one hand, the shear force brought by the gas phase jetting removes the solid particles, reduces the deposition accumulation around the inner ring, on the other hand, the side edges of the adjacent floating valves will be scraped with each other in the opening and closing and swinging process, and the end surface of the floating valve forms a scraping cooperation with the upper surface of the inner ring, a small amount of solid impurities adhered to the side wall and the end surface of the floating valve can be effectively removed, accumulation of the impurities for a long time to increase the adhesion strength is avoided, the floating valve is further prevented from being stuck, the normal rotation of the floating valve is affected, and the anti-blocking effect is further strengthened.

[0029] 2、When the float valve is tilted by the gas phase thrust, the balance ball rolls in the gas distribution cover along the tilting direction. When the flow rate decreases, the float valve quickly resets to the horizontal state under the action of the balance ball gravity, shortens the reset time, avoids liquid phase leakage caused by slow float valve reset, in addition, the presence of the balance ball increases the inertia resistance when the float valve rotates, which can inhibit the frequent shaking of the float valve caused by gas flow fluctuations, making the valve hole opening adjustment more stable, and during the rolling process of the balance ball, the surface protrusions are randomly inserted into the inner wall of the dispersion hole, using the rigidity extrusion and friction of the protrusions, the accumulated solid particles, crystalline impurities and other impurities are pushed out, and the impurities are stripped from the hole to avoid the accumulation of impurities to block the hole.

[0030] 3、When the gas pushes one side of the float valve to lift up, the other side drops, and the gas flow on the descending side is blocked by the arc-shaped baffle and changes direction, so that the gas phase is more evenly dispersed in the liquid phase, improving the mass transfer efficiency. At the same time, when the gas distribution cover rotates with the inner ring, the gap between the arc-shaped baffle and the bottom wall of the gas distribution cover forms a "scraping interval", and the inner arc surface of the arc-shaped baffle can scrape off some particle impurities adhered to the surface of the gas distribution cover, avoiding the accumulation of particles to affect the rotation of the gas distribution cover or block the dispersion hole. Combined with the internal scraping of the balance ball, the effect of double anti-blocking is realized, and the anti-blocking ability of the equipment is significantly improved.

[0031] 4、When the inner ring rotates, the scraper rotates with the inner ring, and the scraper generates a radial thrust on the solid particles on the inner ring periphery of the tray, causing the solid particles to move radially away from the valve hole, avoiding the accumulation of particles around the valve hole. Moreover, the scraper disturbs the liquid phase on the tray when it rotates, increasing the degree of liquid turbulence and accelerating the renewal of the gas-liquid interface, making the mass transfer between the gas phase and the liquid phase more sufficient. Not only does it solve the problem of valve hole blockage, but also improves the mass transfer efficiency through flow field disturbance, achieving multifunctional integration of structural design. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a structural diagram of a anti-blocking rectifying column of the present application;

[0033] Figure 2 It is a structural diagram of a anti-blocking rectifying column of the present application; Figure 1 It is an enlarged structural diagram of region A in the present application;

[0034] Figure 3 It is an enlarged structural diagram of region B in the present application; Figure 2 It is an enlarged structural diagram of region B in the present application;

[0035] Figure 4 It is a front view structural diagram of the rotating assembly, driving impeller and gas distribution cover of the present application;

[0036] Figure 5 It is an enlarged structural diagram of region C in the present application; Figure 4 It is an enlarged structural diagram of region C in the present application;

[0037] Figure 6 The exploded structural schematic diagram of the float valve and the gas distribution cover of the present application;

[0038] Figure 7 The structural schematic diagram of the balance weight of the present application.

[0039] Label explanation: 1, tower body; 101, mounting seat; 2, tray; 21, valve hole; 22, overflow weir; 3, rotating assembly; 31, outer ring; 32, inner ring; 321, rotating shaft; 4, driving impeller; 41, connecting plate; 42, fixed shaft; 43, blade; 5, float valve; 6, gas distribution cover; 61, dispersion hole; 7, balance weight; 71, protrusion; 8, arc baffle; 9, scraping strip. DETAILED DESCRIPTION

[0040] The technical solutions of the embodiments of the present application will be described below in conjunction with the Figures 1-7 The technical solutions of the embodiments of the present application will be described below in conjunction with the

[0041] With reference to Figure 1 , Figure 2 and Figure 3 , the present embodiment provides a clogging-preventing rectifying tower, which comprises a tower body 1, a tray 2, a rotating assembly 3 and a float valve 5, the outer arc surface of the tower body 1 is uniformly and circumferentially fixedly installed with mounting seats 101, the inner wall of the tower body 1 is arrayed with the trays 2 along the height direction of the tower body 1, one side of each of the trays 2 is fixedly installed with an overflow weir 22, the two adjacent overflow weirs 22 are respectively located on the opposite sides of the axis of the tower body 1, the flow path of the liquid on the tray 2 is prolonged by staggered arrangement, the contact time and contact area of the gas phase and the liquid phase are increased, so that the component separation effect is improved, the lower surface of each of the overflow weirs 22 is flush with the upper surface of the adjacent overflow weir 22 below, when the liquid overflows from the overflow weirs 22, the height difference of the liquid falling is reduced due to the flush upper and lower surfaces, the impact disturbance of the liquid falling is reduced, and the uneven liquid level distribution on the tray 2 is avoided.

[0042] With reference to Figure 3 and Figure 6, the valve hole 21 is arranged on the tray 2, the rotating assembly 3 comprises an outer ring 31 and an inner ring 32, the outer ring 31 is fixedly installed on the inner wall of the valve hole 21 and provides support for the inner ring 32, the inner ring 32 is rotationally connected to the inside of the outer ring 31, the inner ring 32 is provided with a rotating shaft 321 in the radial direction, the rotating shaft 321 is perpendicular to the axis of the inner ring 32, a plurality of float valves 5 are rotationally arranged on the rotating shaft 321 in the axial direction, each float valve 5 is in sealing cooperation with the upper surface of the inner ring 32 when rotating to the horizontal state, and the side edges of the adjacent two float valves 5 abut against each other to form a closed structure, so as to avoid direct leakage of the liquid phase from the inner ring 32 downward, and the lower surface of the inner ring 32 is provided with a driving impeller 4 for driving the inner ring 32 to rotate.

[0043] During the process of the gas phase rising from the middle of the tower body 1, due to the non-uniformity of the gas flow rate and distribution, a pressure difference is generated at both ends of the float valve 5, which pushes one side of the float valve 5 to rotate along the axis of the rotating shaft 321 and lift, so that the lower part of the inner ring 32 is communicated with the upper part, the gas contacts the liquid phase accumulated on the surface of the tray 2 to transfer mass, the greater the flow rate of the gas phase, the greater the pressure difference generated, and the greater the angle of the float valve 5 twisted; the greater the action area of the gas phase, the more the float valves 5 rotationally connected with the same rotating shaft 321 are opened, so as to realize self-adaptive adjustment of the opening degree of the valve hole 21 according to the gas phase, and the self-adaptive adjustment mechanism can stabilize the flow rate of the gas passing through the float valve 5 in a reasonable range, so as to avoid the decrease of the mass transfer efficiency caused by the sudden change of the flow rate. When the flow rate of the gas phase decreases, the float valve 5 gradually falls under the action of its own gravity, reduces the opening degree of the valve hole 21, and maintains the relative stability of the gas flow rate. This dynamic balance helps to maintain the stability and efficiency of the rectification process.

[0044] It is worth noting that when the float valve 5 rotates around the rotating shaft 321, the side edges of the adjacent float valves 5 will relatively slide and form a mutual scraping effect, and the upper surface of the inner ring 32 is closely combined with the end surface of the float valve 5, which produces a scraping effect when the float valve 5 is reset or rotated, so as to scrape off the fine impurities adhered to the side wall and end surface of the float valve 5, prevent the impurities from hardening due to long-term accumulation, cause the float valve 5 to rotate to be stuck, and further ensure the flexible operation of the float valve 5.

[0045] Referring to Figure 3 and Figure 4 , the lower surface of each float valve 5 is fixedly provided with a gas distribution cover 6, the side wall and the bottom wall of the gas distribution cover 6 are provided with dispersion holes 61, the dispersion holes 61 are uniformly distributed in a honeycomb shape, the bottom walls of the adjacent gas distribution covers 6 are cooperatively formed into a spherical surface structure, and the bottom walls of the gas distribution covers 6 are slidably combined with the inner spherical surface of the inner ring 32 (for example Figure 6As shown in the figure, the inner spherical center of the inner ring 32 coincides with the rotation center of the inner ring 32, the inside of the gas distribution cover 6 is movably provided with the counterweight ball 7, when the float valve 5 rotates around the axis of the rotation axis 321, the counterweight ball 7 rolls in the gas distribution cover 6, and the counterweight ball 7 has a tendency to drive the float valve 5 to reset to the horizontal state, specifically, when the float valve 5 tilts, the center of gravity of the counterweight ball 7 deviates, a reset torque around the rotation axis 321 is generated, when the gas flow rate decreases, the torque can overcome the residual pressure of the gas flow to quickly reset the float valve 5, and the reset time is shortened. The outer surface of the counterweight ball 7 is uniformly provided with the protrusion 71 (as shown in the figure), the protrusion 71 can be inserted into the inside of the dispersion hole 61 when the counterweight ball 7 rolls, and the impurities accumulated on the inner wall of the dispersion hole 61 are scraped out by mechanical scraping, so that the dispersion hole 61 is not blocked by the impurities to affect the gas flow. The presence of the counterweight ball 7 not only enhances the reset ability of the float valve 5, but also effectively prevents the dispersion hole 61 from being blocked through the mechanical action in the rolling process of the counterweight ball 7, and ensures the uniformity and stability of the gas distribution. Figure 7 The outer surface of the counterweight ball 7 is uniformly provided with the protrusion 71 (as shown in the figure), the protrusion 71 can be inserted into the inside of the dispersion hole 61 when the counterweight ball 7 rolls, and the impurities accumulated on the inner wall of the dispersion hole 61 are scraped out by mechanical scraping, so that the dispersion hole 61 is not blocked by the impurities to affect the gas flow. The presence of the counterweight ball 7 not only enhances the reset ability of the float valve 5, but also effectively prevents the dispersion hole 61 from being blocked through the mechanical action in the rolling process of the counterweight ball 7, and ensures the uniformity and stability of the gas distribution.

[0046] The gas phase enters the inside of the gas distribution cover 6 through the dispersion hole 61 below the inner ring 32, and pushes the float valve 5 to rotate along the axis of the rotation axis 321 to open the float valve 5, and then the gas phase is dispersed into the liquid phase inside through the dispersion hole 61 above the inner ring 32 for mass transfer, the dispersion design of the dispersion hole 61 can disperse the gas phase into small bubbles to increase the contact area with the liquid phase, thereby improving the mass transfer efficiency, the float valve 5 drives the gas distribution cover 6 to rotate in the process of rotating, the counterweight ball 7 rolls in the inside of the gas distribution cover 6, in this process, the protrusion 71 is randomly inserted into the inside of the corresponding dispersion hole 61, so that the impurities accumulated on the inner wall of the dispersion hole 61 are pushed out to the outside, avoiding that the dispersion hole 61 is blocked by too much impurities to affect the normal flow of the gas phase; in addition, the inclination of the counterweight ball 7 towards one side increases the imbalance of the float valve 5 on both sides of the rotation axis 321, which assists the float valve 5 to quickly reset to the horizontal state when the gas flow rate decreases, because the eccentric action of the counterweight ball 7 generates a reset torque, so that the float valve 5 responds in time when the gas flow changes, avoiding that the slow reset of the float valve 5 causes the liquid phase to leak, and the rotation of the gas distribution cover 6 also makes the distribution of the gas phase in the liquid phase more uniform, further improving the gas-liquid mass transfer efficiency.

[0047] Referring to Figure 4 The driving impeller 4 includes a connecting sheet 41, a fixed shaft 42 and a blade 43, the connecting sheet 41 is fixedly arranged in an axial array on the lower surface of the inner ring 32, the fixed shaft 42 is fixedly connected with the bottom end of the connecting sheet 41, and the blade 43 is fixedly arranged on the outer camber surface of the fixed shaft 42 in a circumferential uniform manner.

[0048] In the process of ascending, the kinetic energy of the gas phase is transmitted to the blades 43, which drives the blades 43 to rotate, drives the inner ring 32 to rotate along the inner circle of the outer ring 31 through the fixed shaft 42 and the connecting piece 41, and the rotation of the blades 43 not only drives the inner ring 32 to rotate, but also has a certain dispersion effect on the ascending gas phase, so that the velocity distribution of the gas phase is more uniform, avoiding the gas phase being too concentrated to reduce the mass transfer efficiency with the liquid phase. The inner ring 32 drives the float valve 5 and the gas distribution cover 6 to rotate along the axis of the inner ring 32 through the rotating shaft 321, so that the gas phase is dispersed into the liquid phase from different directions around the inner ring 32, which can improve the uniformity of the distribution of the gas phase on the tray 2, thereby improving the mass transfer efficiency between the gas phase and the liquid phase. At the same time, the shear force generated by the horizontal or inclined ejection of the gas phase can carry away the surrounding condensed solid particles, reduce the accumulation of solid particles around the inner ring 32, and reduce the blockage of the dispersion holes 61. In addition, due to the non-uniformity of the gas phase distribution (the reasons for non-uniformity include gas flow rate fluctuation and interference of liquid flow on gas path in gas-liquid mass transfer), the float valve 5 will irregularly swing along the rotating shaft 321 due to the uneven gas thrust during rotation, which further reduces the probability of accumulation of solid particles on the surface of the dispersion holes 61. The rotation of the impeller 4 can also enhance the turbulence degree of the gas-liquid two-phase flow, promote the renewal of the gas-liquid interface, and thus improve the mass transfer efficiency.

[0049] With reference to Figure 4 and Figure 5 The lower surface of the outer ring 31 is uniformly provided with arc-shaped baffles 8 in the circumferential direction, gaps are formed between the inner arc surfaces of the arc-shaped baffles 8 and the outer arc surfaces of the bottom walls of the gas distribution covers 6, and the upper ends of the connecting pieces 41 are located between the outer arc surfaces of the gas distribution covers 6 and the inner arc surfaces of the arc-shaped baffles 8. In the process of ascending, the gas phase pushes one side of the float valve 5 to rise and the other side to drop, at this time, the gas on the rising side is dispersed into the liquid phase through the dispersion holes 61, and the gas flow on the dropping side of the float valve 5 changes direction after being blocked by the arc-shaped baffles 8 to form turbulent flow, which enhances the gas-liquid mixing. In the process of rotating along the axis of the inner ring 32, the arc-shaped baffles 8 can partially scrape and clean the solid particles pushed out by the protrusions 71 on the surface of the gas distribution cover 6, the particles are scraped off the surface of the gas distribution cover 6 through the relative movement between the arc-shaped baffles 8 and the gas distribution cover 6, and the accumulation of too many particles is avoided to affect the flow of the gas phase. The arrangement of the arc-shaped baffles 8 not only enhances the gas-liquid mixing effect, but also further improves the anti-blocking ability.

[0050] In addition, the gas distribution cover 6, the dispersion hole 61, the balance weight 7 and the arc-shaped baffle 8 below the float valve 5 only contact with the gas phase, the impurity concentration in the gas phase is much lower than that in the liquid phase, and the continuous scouring of the high-speed gas flow on the surface can reduce the adhesion of crystalline substances, polymers and solid particles commonly found in the liquid phase. Combined with the mechanical scraping of the balance weight 7 and the arc-shaped baffle 8, a double anti-blocking mechanism of gas phase scouring and structural cleaning is formed.

[0051] With reference toFigure 4 and Figure 6 The outer side end of the scraping strip 9 extends in an involute. During rotation of the inner ring 32 along its own axis, the scraping strip 9 rotates with the inner ring 32. Due to the involute extension of the outer side end of the scraping strip 9, the scraping strip 9 generates a radial thrust on the solid particles on the surface of the tray 2 around the inner ring 32 during rotation, pushing the particles to the edge of the tray 2, assisting in cleaning the peripheral area of the inner ring 32, further reducing the probability of solid particles adhering to the surface of the gas distribution cover 6, improving the anti-blocking effect. In addition, the rotation of the scraping strip 9 disturbs the flow of the liquid, increasing the degree of turbulence of the liquid, accelerating the renewal of the gas-liquid interface, and further improving the mass transfer efficiency. The involute design of the scraping strip 9 enables it to clean the surface of the tray 2 more effectively during rotation, while enhancing the degree of turbulence of the liquid, which is beneficial to improving the mass transfer efficiency.

[0052] The implementation principle of the anti-blocking rectifying column according to an embodiment of the present application is as follows:

[0053] The liquid phase enters the interior from the upper part of the column body 1 and flows along the tray 2. The overflow weirs 22 on the tray 2 are arranged alternately to prolong the flow path of the liquid, increase the contact time and area with the gas phase, and improve the separation effect. When the liquid level of the tray 2 rises, the liquid overflows from the overflow weirs 22 to the lower layer of the tray 2. Since the upper and lower surfaces of the overflow weirs 22 are flush, the height difference of the falling liquid is small, reducing the impact disturbance and avoiding the influence of uneven liquid level on the gas-liquid contact efficiency. At the same time, the gas phase enters from the feed inlet in the middle of the column body 1. During the upward process, due to the uneven flow rate and distribution, a pressure difference is generated on both ends of the float valve 5, pushing one side of the float valve 5 to rotate around the rotating shaft 321 to lift, so that the inner ring 32 is connected to the upper and lower parts, and the gas contacts and mass transfers with the liquid on the tray 2. The greater the flow rate of the gas, the greater the pressure difference, and the greater the twisting angle of the float valve 5; the greater the area of action, the greater the number of float valves 5 opened on the same rotating shaft 321, so as to realize self-adaptive adjustment of the opening degree of the valve hole 21 according to the gas flow, stabilize the flow rate to ensure the mass transfer efficiency.

[0054] When the gas enters the gas distribution cover 6 below the inner ring 32, it is dispersed into fine bubbles through the dispersion holes 61 in the side wall and the bottom wall, and enters the interior of the liquid for mass transfer. The rotation of the float valve 5 drives the rotation of the gas distribution cover 6, and the center of gravity of the balance weight 7 inside is offset due to the inclination, generating a restoring torque to drive the float valve 5 to quickly reset when the flow rate of the gas is reduced. At the same time, the protrusions 71 on the outer surface of the balance weight 7 are inserted into the dispersion holes 61 when rolling, and the impurities on the inner wall are pushed out by mechanical scraping, avoiding the blockage of the dispersion holes 61. In addition, the upward movement of the gas drives the blades 43 of the driving impeller 4 to rotate, which drives the inner ring 32 to rotate through the fixed shaft 42 and the connecting piece 41. The blades 43 not only disperse the gas to make it uniformly distributed, but also make the inner ring 32 rotate with the float valve 5 and the gas distribution cover 6, so that the gas enters the liquid from different directions, improving the uniformity of mass transfer. During the rotation process, the shearing force of the gas spray removes the solid particles, reducing the deposition accumulation around the inner ring 32.

[0055] The arc-shaped baffle 8 under the outer ring 31 leaves a gap with the bottom wall of the gas distribution cover 6. When the gas pushes the float valve 5 to lift, the gas flow on the descending side is blocked by the arc-shaped baffle 8 to form turbulence, thereby enhancing gas-liquid mixing. When the gas distribution cover 6 rotates, the arc-shaped baffle 8 scrapes the particles on the surface of the gas distribution cover 6, thereby assisting in preventing blockage. The scraping strip 9 rotates with the inner ring 32, pushes the solid particles on the surface of the tray 2 in the periphery of the inner ring 32 radially to the edge, thereby cleaning the peripheral area, while disturbing the liquid to increase turbulence and accelerate the renewal of the gas-liquid interface. Finally, through the gas-liquid mass transfer separation of multiple trays 2, the gas phase is discharged from the top of the tower body 1, and the liquid phase flows out from the bottom of the tower body 1, thereby realizing efficient separation of components, and through the synergistic effect of various components, effectively avoiding blockage at the dispersion holes 61 and other positions, thereby ensuring stable operation of the equipment.

[0056] In addition, in the description of the present application, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, and those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

Claims

1. An anti-plugging rectifying column, characterized in that, The utility model relates to a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry.

2. The anti-plugging distillation column according to claim 1, wherein: The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry.

3. The anti-plugging distillation column of claim 1, wherein: The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry.

4. A choke prevention distillation column according to any one of claims 1-3, characterized in that: The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry.

5. A choke preventing rectifying column as claimed in claim 4, wherein: The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry.

6. The anti-plugging distillation column of claim 4, wherein: The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. 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The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. 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The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. The utility model discloses a tower plate and a tower body, and belongs to the field of chemical industry. 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