Obliquely-arranged side-spraying continuous spraying fluidized bed

Abstract

The utility model discloses an obliquely-arranged side-spraying continuous spraying fluidized bed, and relates to the technical field of spraying fluidized bed granulation equipment. Comprising a rectangular bed body, an air distribution chamber, an air distribution screen plate, a fluidization chamber and a separation chamber are sequentially arranged in the bed body from bottom to top, a plurality of side spray guns are arranged on the bed body and are mounted on one side or two sides of the bed body of the fluidization chamber, part of or all the side spray guns are obliquely arranged towards one end of the bed body, and the inclination angle is 3-30 degrees. The side spray guns are obliquely arranged on one side or two sides of the bed body in the length direction, atomization flow of the side spray guns can form planar oblique local vortexes, due to the existence of the local vortexes, firstly, materials in a spray fluidization area form vortex-shaped movement, bubble merging is not prone to occurring in an area which can be influenced by a spray area, bubbles can be blown broken into small bubbles, and the materials can be sprayed into the bed body. And the material particles are accelerated to update, so that more coatings are formed, the agglomeration is reduced, the heat and mass transfer between the particles and the fluidized air is accelerated, the stability of a bed layer is facilitated, and the effect of the utility model is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of spray fluidized bed granulation equipment, in particular to a continuous spray fluidized bed granulation and drying device with side spray guns arranged obliquely. Background Art

[0002] In the prior art, the fluidized bed device used for spray fluidized bed granulation and drying of seeds (mother nuclei, bottom materials) (abbreviated as fluidized bed granulation) usually adopts the following method: in the fluidized bed, with the help of a raw material liquid (mother liquid) nozzle (spray gun), one or more liquid raw materials are sprayed onto a seed that is basically smaller in average particle size than the granular product to be produced (i.e., on the fluidized material layer in the main body of the fluidized bed, and the fluidized material layer is the fluidized bed layer). The volatile components in the one or more sprayed raw materials are evaporated to achieve fluidized bed spray granulation. According to different functions, adjustments or targeted designs can be made to optionally meet the production requirements of four types of particles: snowflake-shaped, golden sugar flat-shaped, spherical-like, and spherical. Usually, the average particle size of the finished product can be between 0.15 - 5 mm and can be specifically designed according to needs. When the seeds are continuously fed into the fluidized bed or / and seeds are generated in the fluidized bed, and the granular products are continuously discharged from the fluidized bed, a continuous spray fluidized bed is formed. The granulation principle is divided into agglomeration and coating. In the fluidized bed, agglomeration and coating exist simultaneously, with different proportions. Because there are many Chinese meanings, sometimes coating is also called coating, covering, cladding, etc. The discharged granular products can be screened according to needs. The qualified particle size range is used as the finished product, and the unqualified particle size range is used as seeds (usually after large particles are broken). Sometimes, to meet the required amount of seeds, a part of the finished product can also be returned as seeds (it can be broken or not). When the seeds return from outside the main body of the fluidized bed, there can be a dedicated feed port, or it can share and merge with other housing connection ports, such as the seed return port for cyclone collection and discharging, the seed return port for bag collection and returning powder, the seed return port after screening, and the seed feeding port for feeding the bottom material at startup (such as manual feeding port, pneumatic feeding port, mechanical conveying feeding port), etc. The solid components of the seeds and the raw material liquid can be the same or different.

[0003] In the fluidized bed, there is a rising process and merging phenomenon of small bubbles. In the rising process, especially when they are above the fluidized bed layer, they will break, and some particles will be thrown up, even very high. Because the bubbles rise, merge, and break, this throwing phenomenon is more obvious. At this time, there is no stable upper interface (that is, the upper interface cannot be measured and observed). This fluidization state is called aggregate fluidization. Usually, dispersed and aggregate fluidization will exist at the same time in the fluidized material layer, that is, the merging and breaking of bubbles will always occur, and the proportions are large or small. When the proportion is small, that is, when the dispersed fluidization is dominant, it can be considered to have an upper interface similar to the steady boiling of liquid. Although there are countless small bubbles, the throwing phenomenon is small and can be considered to be absent. The average height of boiling can be taken as the upper interface. When the bubbles break, there will be a violent impact between the particles, causing great turbulence inside and outside the bubbles, thereby strengthening the heat and mass exchange between gas and solid and between particles. However, the heat and mass exchange of multiple small bubbles is better than that of a small number of large bubbles, and is more conducive to fluidization stability, that is, the stability and effect of dispersed fluidization are greater than that of aggregate fluidization.

[0004] According to the atomization direction of the nozzle, the spray route can be divided into three basic directions: bottom spraying, that is, spraying from bottom to top; side spraying, that is, spraying from one side of the shell to the other side; and top spraying, that is, spraying from top to bottom. Side spraying is divided into upper side spraying at the upper part of the material layer height position, middle side spraying at the middle part of the material layer height position, and lower side spraying at the lower part of the material layer height position according to different installation height positions. Usually, a fluidized bed only has one spray route, that is, there is only one (one-dimensional) direction of spray flow. There is a deviation between the fluidization state and principle of fluidized bed granulation and fluidized bed drying. Therefore, some principles in fluidized bed drying books can only be used for reference and cannot be directly moved to the spray fluidized bed.

[0005] The characteristic of the side-spray fluidized bed is that the spray flow is completely embedded in the fluidized material layer, and there is no "spray drying" phenomenon. However, in the conventional side-spray fluidized bed, it is easy to have difficulty in updating material particles in the spray flow atomization area. In the atomization area, it is easy to produce excessive spraying of particles, that is, excessive humidity, and no time to dry, resulting in agglomeration. When the spray flow is sprayed into the fluidized material layer dominated by the polymer fluidized bed, due to the existence of bubbles and the existence of bubble merging and rupture, the renewal of particles is more difficult, agglomeration is more, and the heat and mass exchange efficiency decreases. The traditional side-spray fluidized bed needs to rely on the mechanical power of the turntable, plus the action of the fluidized bed, to form a ring or hemp rope-like movement route so that material particles can be updated in time, avoid agglomeration, and accelerate heat and mass exchange.

[0006] The above shortcomings may also cause the fluidized material layer in a large fluidized bed to fluctuate or even fluctuate greatly in the length direction of the fluidized bed, resulting in instability of the fluidized material layer. In addition, the liquid-solid mixing and replacement effect of the fluidized bed is single, the internal heat and mass exchange efficiency is reduced, and the particle morphology is uneven (for example, when the agglomeration form becomes more, the bulk density will decrease), and even local fluidization may slow down, or even the fluidized bed may die and the operation may not continue. Summary of the Invention

[0007] The object of the present utility model is to provide a continuous spray fluidized bed with laterally inclined spray guns, which can make the height of the fluidized material layer operate stably, improve the heat and mass transfer efficiency in the spray area, update the material particles in a timely manner, increase the coating, reduce agglomeration, and avoid the defects in the background art.

[0008] The technical solution for achieving the above object is: a continuous spray fluidized bed with laterally inclined spray guns, including a rectangular bed body, in which an air distribution chamber, an air distribution screen plate, a fluidization chamber, and a separation chamber are successively arranged from bottom to top. It is characterized in that: a plurality of side spray guns are arranged on the bed body and installed on one side or both sides of the fluidization chamber bed body, and some or all of the side spray guns are inclined towards one end of the bed body, and the inclination angle is 3° - 30°.

[0009] The beneficial effects of the present utility model: the side spray guns are inclined on one side or both sides in the length direction of the bed body, which can make the atomized flow of the side spray guns form a planar inclined local eddy current. The existence of the local eddy current first makes the materials in the spray fluidization area move in an eddy current shape. The area that the spray area can affect is not easy to have bubble coalescence, and if there are bubbles, they will be blown into small bubbles. The update of material particles is accelerated, so that there are more coatings and less agglomeration, thereby accelerating the heat and mass transfer between the particles and the fluidizing air. Multiple eddy currents form a resistance deceleration to the change in the bed layer height of the fluidized bed in the length direction of the fluidized bed, that is, the eddy current damping effect. Coupled with the reduction of bubble coalescence, the proportion of dispersed fluidization is more, which is beneficial to the stability of the bed layer, thus achieving the utility model effect.

[0010] Furthermore, the side spray guns are arranged in multiple rows with different heights in the fluidization chamber. Through the multi-row arrangement, local eddy currents exist at different heights of the fluidized material layer. Preferably, it is a combination of middle side spray and upper side spray.

[0011] The included angle between the side spray gun and the horizontal line in the height direction is 0° - 30°. The combination of horizontal and height inclinations makes the planar eddy current tilt up or down, presenting the characteristics of a three-dimensional eddy current, making the bed layer more stable, reducing bubble coalescence in height, and better achieving the object of the utility model.

[0012] Furthermore, side spray guns are respectively arranged on both sides of the bed body. The side spray guns on both sides are staggered in the length direction of the bed body, and the distance between two adjacent staggered side spray guns is 150 - 600 mm.

[0013] A rubbing effect is formed between the atomized flows of the side spray guns staggered on both sides, which is beneficial to the liquid-solid mixing and displacement effect, strengthens the bubble destruction ability and the heat and mass transfer ability in the spray area, and the damping effect is further enhanced. Preferably, the adjacent staggered distance is 200 - 400 mm to make the rubbing effect stronger.

[0014] Furthermore, side spray guns are respectively arranged on both sides of the bed, and the side spray guns on both sides are symmetrically arranged or approximately symmetrically arranged. When the side spray guns are approximately symmetrically arranged, the height difference between the height installation positions of the two adjacent side spray guns on both sides is 0-150mm, and the distance between the axes of the two adjacent side spray guns on both sides at the shortest position is greater than 0 and less than 150mm. The spray flows on both sides arranged symmetrically or approximately symmetrically have a collision effect, which is not only conducive to liquid-solid mixing and replacement, but also can prevent the spray flow from spraying on the opposite wall, increase the spray volume of a single-gun spray gun, and increase the material stacking density.

[0015] Furthermore, all the side spray guns are inclined toward the discharge end of the bed. When set, the inclination angles of the side spray guns can be consistent or inconsistent, and the distances between them can be equal or unequal. When the inclination angles are consistent, a resonance effect can be formed, which can enhance the heat and mass exchange and damping effect of the plane inclined vortex.

[0016] The side spray gun is tilted toward the discharge port at the same time. At this time, a driving force toward the discharge port is formed by the spray flow, and a resonance effect is generated by the consistency of the plane vortex shape, which can enhance the heat and mass exchange and damping effect of the plane inclined vortex.

[0017] Furthermore, all the side spray guns are tilted toward the opposite end of the bed discharge port. At this time, the residence time of small particles can be extended, and the residence time of large particles in the fluidized bed is shorter than that of small particles, making the fluidized bed granulation discharge more uniform, that is, improving the first-time yield. The principle of consistent tilt angle and arrangement distance is the same as the above-mentioned resonance effect.

[0018] Furthermore, the side spray gun is partially inclined toward the discharge port end and partially inclined toward the opposite end of the discharge port. Because when the inclination directions are the same, the inclined local vortex of the plane will have a certain unidirectional resistance effect. By adopting the method of partially inclining toward the discharge port end and partially inclining toward the opposite end of the discharge port, there are bidirectional damping effects and mixing replacement effects in the length direction of the fluidized bed, which avoids the unidirectional effect causing the material layer height at one end of the bed to be always higher than the other end.

[0019] Furthermore, a grid is provided below the side spray gun, and the distance between the grid and the muzzle of the side spray gun in the height direction is 100-1000mm. The holes of the grid are usually rectangular, and the setting of the grid is conducive to destroying bubbles and promoting dispersed fluidization. Because the grid bars stand in the fluidized material layer, the fluidized material hits the grid up and down, which plays the role of a blade cutting. At the same time, due to the distance between the grid and the side gun muzzle, the material near the grid is not completely dry, and the surface of the particles has a certain plasticity. At this time, the surface of the particles has a further calendering and spreading effect, which is conducive to improving the density of the particles and facilitating the dispersion of loose block materials. Preferably, the muzzle of the side spray gun of the grid is 150-500mm in the height direction, so that the plasticity of the particle surface is good enough.

[0020] Further, to achieve a better cutting effect, the grid bars of the grid are provided with cutting edges facing upward, downward, or both upward and downward. More preferably, the width of the cutting edge is less than 5 mm, and the width of the grid bar is between 5% and 16% of its height.

[0021] Further, the angle between the grid bars arranged along the width direction of the bed and the vertical line is 0 - 30°, preferably 5 - 20°.

[0022] The present utility model can comprehensively adopt various solutions of the existing other technologies to achieve a better combined effect. For example, an internal heater is provided above the side spray gun, an internal heater is provided below the side spray gun, and a top spray gun is simultaneously provided on the bed to form a cross atomization flow of the side spray gun and the top spray gun.

[0023] In summary, in a continuous spray fluidized bed device with inclined side spray guns, when the present utility model works, it can accelerate the renewal of material particles in the material particle renewal area affected by the side spray gun mist feed flow, improve the heat and mass transfer efficiency, increase the coating particles, reduce the agglomerated particles, increase the dispersed fluidization in the fluidized material layer, and the fluidized material layer operates stably, realizing stable continuous operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a combined front view of the main body of the present utility model;

[0025] Figure 2 It is a combined side view of the main body of the present utility model;

[0026] Figure 3 It is a combined top view of the main body of the present utility model;

[0027] Figure 4 It is a front view of the grid of the present utility model;

[0028] Figure 5 It is a top view of the grid of the present utility model;

[0029] Figure 6 It is a schematic cross-section of the grid bar.

[0030] As shown in the figure, where: 1 is the air distribution chamber, 2 is the air distribution grid plate, 3 is the internal heating fluidized chamber, 4 is the spray fluidized chamber, 5 is the separation chamber, 6 is the dust discharge port, 7 is the grid, 8 is the internal heat exchanger, 9 is the side spray gun, 10 is the fluidized chamber, 13 is the discharge port, 15 is the return air shut-off fan, 16 is the cyclone separator, 20 is the straight section of the fluidized chamber, 21 is the enlarged section of the fluidized chamber, 26 is the granulation bed air inlet, 27 is the rectangular bed body, 28 is the local eddy current;

[0031] 33 is a schematic diagram of the fluidized material layer, and 39 is the rubbing effect formed between the atomization flows of the side spray guns arranged alternately on both sides;

[0032] 43 is the horizontal movement trend of the fluidized material towards the enlarged section housing;

[0033] a is the installation distance between adjacent side spray guns on both sides;

[0034] b is the angle between the side spray gun and the horizontal line;

[0035] f is the distance between the grille and the side spray gun nozzle in the height direction;

[0036] h is the height of the fluidized material layer;

[0037] i is the tilt angle of the side spray gun in the top view;

[0038] k is the height of the grille bar;

[0039] m is the width of the grille bar;

[0040] n is the width of the edge of the grille bar;

[0041] p is the adjacent staggered distance of the side spray gun in the top view;

[0042] r is the angle between the grille bar arranged along the width direction of the bed body and the vertical line. Detailed implementation mode Example 1

[0043] As Figures 1 to 6 shown: A continuous spray fluidized bed device with inclined side spray guns includes a rectangular bed body 27. The bed body 27 is provided with a dust discharge port 6. Inside the bed body, there are successively arranged a wind distribution chamber 1, a wind distribution screen plate 2, a fluidization chamber 10, and a separation chamber 5 from bottom to top. The fluidization chamber 10 includes a spray fluidization chamber 4 and an internal heating fluidization chamber 3 arranged up and down.

[0044] Side spray guns 9 are arranged on the side walls of the fluidization chamber. The nozzles of the side spray guns 9 extend into the fluidized material layer 33. The side spray guns are installed on one side or both sides of the bed body 27 of the fluidization chamber. Part or all of the side spray guns 9 are inclined towards one end of the bed body 27, and the inclination angle i is 3° - 30°; preferably, the inclination angle i is 5° - 20° to maximize the following eddy resistance.

[0045] The side spray gun 9 is inclined on one or both sides in the length direction of the bed body 27, and can make the atomized flow of the side spray gun 9 form a planar inclined local eddy current 28. The existence of the eddy current first makes the materials in the spray fluidization zone form an eddy current-shaped movement. In the area that the spray zone can affect, the merging of bubbles is not easy to occur. If there are bubbles, they will be blown into small bubbles. The renewal of material particles is accelerated, so that there are more coatings and fewer agglomerations. As a result, the heat and mass transfer between the particles and the fluidizing air is accelerated. Multiple local eddy currents 28 form a resistance deceleration to the change in the bed height in the length direction of the fluidized bed layer bed body 27, that is, the eddy current damping effect. Coupled with the reduction of the bubble merging phenomenon and more dispersed fluidization ratio, it is beneficial to the stability of the bed layer, thus achieving the utility model effect.

[0046] As an implementation manner of this embodiment, the side spray gun 9 is inclined towards the discharge port end 13 at the same time, and the inclination angles are the same or different, and the distances between adjacent two side spray guns 9 are equal or unequal. When the inclination angles are the same, a resonance effect can be formed, which can strengthen the heat and mass transfer and damping effect of the local eddy current 28.

[0047] The side spray gun 9 is inclined towards the discharge port end 13 at the same time to form a driving force towards the discharge port end 13. A resonance effect is generated through the consistency of the shape of the local eddy current 28. The driving force and the cross two-dimensional atomized flow act together to form a three-dimensional liquid-solid mixing and displacement effect inside the fluidized material layer. In addition to further improving the effect, the large particles in the fluidized material layer can be pushed towards the discharge port end 13 through the oblique atomized flow, which is more conducive to continuous and stable operation.

[0048] As an implementation manner of this embodiment, part of the side spray gun 9 is inclined towards the discharge port end 13 and part is inclined towards the reverse end of the discharge port end 13. Because when the inclination directions are the same, the planar inclined local eddy current 28 will have a certain one-way resistance effect. By adopting the method of inclining part towards the discharge port end and part towards the reverse end of the discharge port, in the length direction of the fluidized bed, there are two-way damping effects and mixing and displacement effects, avoiding the situation that the height of the material layer at one end of the bed body is always higher than that at the other end due to the one-way effect.

[0049] As an implementation manner of this embodiment, all the side spray guns 9 are inclined towards the reverse end 13 of the discharge port of the bed body 27. At this time, the residence time of small particles can be extended. The residence time of large particles in the fluidized bed is less than that of small particles, making the granulation and discharging of the fluidized bed more uniform, that is, improving the primary product rate. The inclination angles are the same or different, and the distances between adjacent two side spray guns 9 are equal or unequal.

[0050] In summary, in this embodiment, there are three inclination combinations of the side spray gun 9: all inclined towards the discharge port end, all inclined towards the reverse end of the discharge port, and part inclined towards the discharge port end and part inclined towards the reverse end of the discharge port.

[0051] In Figure 2In it, multiple rows of side spray guns 9 with different installation heights are arranged in the fluidization chamber 10, such as Figure 1 shown. The axes of two adjacent side spray guns 9 may not be in the same vertical plane. Through the multi-row arrangement, local eddies exist at different heights of the fluidized material layer. Preferably, it is a combination of middle side sprays and upper side sprays, and the other combinations will not be elaborated. The side spray gun 9 may not be horizontally arranged either, and the angle b between it and the horizontal line in the height direction is 0°-30°. The combination of horizontal and height inclinations makes the planar eddy tilt upward or downward, presenting a three-dimensional eddy characteristic, making the bed layer more stable, reducing the bubble coalescence phenomenon in height, and better achieving the purpose of the utility model. Embodiment 2

[0052] Such as Figure 3 shown. The difference between this embodiment and the first embodiment is that side spray guns 9 are respectively arranged on both sides of the bed body 27, and the two side spray guns 9 on both sides are staggeredly arranged in the length direction of the bed body 27. The distance p between two adjacent staggeredly arranged side spray guns is 150-600 mm. A rubbing effect 39 is formed between the atomization flows of the two side spray guns 9 staggeredly arranged on both sides, which is beneficial to the liquid-solid mixing and replacement effect, strengthens the bubble destruction ability and the heat and mass transfer ability of the spray area, and the damping effect is further enhanced. Preferably, the adjacent stagger distance is 200-400 mm to make the rubbing effect stronger. Embodiment 3

[0053] The difference between this embodiment and the first embodiment is that side spray guns 9 are respectively arranged on both sides of the bed body 27, and the two side spray guns 9 on both sides are symmetrically arranged or approximately symmetrically arranged. When approximately symmetrically arranged, the height difference between the height installation positions of two adjacent side spray guns 9 on both sides is 0-150 mm, and the distance p between the shortest positions of the axes of two adjacent side spray guns on both sides is greater than 0 and less than 150 mm, so as to form a collision effect of the spray flows on both sides. In addition to being beneficial to liquid-solid mixing and replacement, it can prevent the spray flow from hitting the opposite wall, increase the spray volume of a single spray gun, and increase the material stacking density. Embodiment 4

[0054] The difference between this embodiment and the first embodiment is that as Figure 3 shown, side spray guns 9 are respectively arranged on both sides of the bed body 27, and the distance a between the two side spray guns 9 on both sides in the length direction of the bed body 27 is 0-150 mm. This distance setting enables the collision effect of the spray flows of the side spray guns 9. Embodiment 5

[0055] The differences between this embodiment and the second and third embodiments are as follows: Side spray guns 9 are respectively arranged on both sides of the bed body 27. A part of the side spray guns 9 on both sides are symmetrically arranged or approximately symmetrically arranged in the length direction of the bed body 27 (the meaning of approximately symmetrically arranged is the same as that in the third embodiment), and the other part is arranged staggeredly in the length direction of the bed body 27. When arranged staggeredly, the distance p between two adjacent side spray guns 9 arranged staggeredly is 150 - 600 mm. Because when the local eddy current of the plane is the same in all directions, there will be a certain one-way resistance effect. Embodiment 6

[0056] As Figure 2 , 4 , 5, and 6 show that a grille 7 is arranged below the side spray gun 9. The material can be made of stainless steel, carbon steel, wear-resistant material, polymer material, etc., and its characteristics can be changed accordingly with the material characteristics. The distance f between the grille 7 and the muzzle of the side spray gun 9 in the height direction is 100 - 1000 mm, so as to keep a certain plasticity on the particle surface, which is beneficial to exert the functions of cutting, rolling, and spreading.

[0057] When an internal heater 8 located below the grille 7 is arranged in the bed body 27, the preferred distance d between the grille 7 and the uppermost heating surface of the internal heater 8 is 20 - 200 mm, so as to avoid the thermal influence of the internal heater on the materials on the grille.

[0058] The grille holes of the grille 7 are usually rectangular. In addition to being beneficial to destroying bubbles and promoting dispersed fluidization, the grille bars of the grille 7 stand in the fluidized material layer, and the fluidized materials pass through and collide with the grille 7 up and down, thus playing the cutting role of a blade. At the same time, due to the distance between the grille and the side muzzle, the materials near the grille are not completely dry, and the particle surface has a certain plasticity. At this time, there is a further rolling and spreading effect on the particle surface, which is beneficial to improving the particle density and dispersing the loose massive materials. Preferably, the distance between the grille and the side spray muzzle in the height direction is 150 - 500 mm, so that the plasticity of the particle surface is good enough.

[0059] As Figure 1 shown, the grille 7 can also be arranged to incline downward towards the discharge port end 13 with an included angle, which is beneficial to promoting the movement of large particles and large blocks towards the discharge port end 13.

[0060] As Figure 6 shown, preferably, chamfers are arranged on the end faces of the upper and lower sides or the upper side or the lower side of the grille bars to form cutting edges. The width of the cutting edge n is less than 5 mm, and the width m of the grille bars of the grille 7 is between 5% and 16% of the height k. While playing the cutting role of the blade, the grille 7 has a certain rigidity to resist the impact damage of the materials.

[0061] As Figure 4As shown in the figure, further, the angle r between the grille bars arranged along the width direction of the bed body 27 and the vertical line is 0 - 30°, preferably 5 - 20°. At this time, the fluidizing air passing through up and down is used to push the massive materials blocked on the grille 7 towards the discharge port.

[0062] The present utility model can comprehensively adopt various solutions of the existing other technologies to achieve a better combined effect. For example, an internal heater is arranged above the side spray gun, an internal heater is arranged below the side spray gun, and a top spray gun is simultaneously arranged on the bed body to form a cross atomization flow of the side spray gun and the top spray gun. At this time, the grille 7 can also play a role in preventing large pieces from above from falling into the internal heater 8 and causing adverse failures.

[0063] The side spray gun 9 is divided into an upper side spray located above the material layer height position, a middle side spray located in the middle of the material layer height position, and a lower side spray located below the material layer height position according to different installation height positions. Because bubbles have the phenomena of rising, merging, and bursting, it can be known that when the side spray gun of the present utility model is arranged above the fluidized material layer, it is superior to the middle and lower positions. When the side spray gun is arranged in a fluidized chamber with an enlarged section, since the fluidization wind speed in the enlarged section shows a linear decrease and there are more small particles towards the upper part, the material has a tendency to move towards the inclined shell on both sides in the enlarged section 43. Combined, the three-dimensional liquid-solid mixing and displacement effect is better.

[0064] The terms in the above implementation modes and arrangement schemes of the present utility model are all prior arts. In this embodiment, only the innovative points of the present utility model are described in detail. As is well known to those skilled in the art, for a fluidization device or system, it is also necessary to configure or select a blower, an air heater, an air inlet pipeline, an air damper, a support platform, a connecting pipe from the main machine to the cyclone separator, a bag filter, a connecting pipe from the cyclone to the bag filter, an induced draft fan, a connecting pipe from the bag filter to the induced draft fan, water dust removal, a connecting pipe from the induced draft fan to the water dust removal, a control system, instruments, and optionally there are also existing common configurations such as semi-finished product conveying, a screening machine, a crusher, seed conveying or pneumatic conveying, screw conveying, a rotary air lock valve or airtight valve, an acceleration pipe, finished product conveying, a finished product bin, and packaging machinery. The cooling device can optionally adopt fluidized bed cooling, drum cooling, a hollow paddle drying and cooling machine, a solid cooler (such as plate type or tubular type, etc.), or a combination of multiple cooling methods. For example, the solid cooler has a plate heat exchanger for powdery and granular solid materials with the patent number ZL201110393598.1 to form a complete system device, which belongs to conventional technology and will not be elaborated here.

[0065] Appendix Figures 1 to 6 The working process shown is only partially schematic and not all working forms, so no further explanations will be given here one by one.

[0066] Such as Figure 2As shown, theoretically, the interface of the material layer height can be in the fluidization chamber, at the boundary between the fluidization chamber and the separation chamber, or in the separation chamber. When there is no internal heater 8, the theoretical interface of the material layer height can be reduced to the middle and lower parts of the fluidization chamber. The side spray guns can be the upper side spray, middle side spray, and lower side spray as described in the background art. The effect of the upper and middle side sprays is better than that of the middle and lower side sprays because the phenomenon of bubble coalescence, rising, and bursting is more obvious in the middle and upper parts of the fluidized material layer. Therefore, when using the upper side spray, the bubble coalescence in the spray flow influence area may be greatly reduced, the exciting force caused by the swinging of the material thrown up in the upper part is greatly decreased, the proportion of particulate fluidization is higher, the renewal of particles, especially small particles, in the spray flow influence area is accelerated, the orderly renewal is accelerated, the agglomeration is reduced, and the heat and mass transfer efficiency is better. At the same time, by adopting technical means to stabilize the swing of the material layer pressure difference from the middle and / or upper parts of the material layer, similar to the lever principle, due to the longer force arm, the effect is better than that of the side sprays in the middle and lower parts.

Claims

1. A laterally spraying continuous spray fluidized bed arranged obliquely, comprising a rectangular bed body, in which an air distribution chamber, an air distribution screen plate, a fluidization chamber and a separation chamber are successively arranged from bottom to top. It is characterized in that: A plurality of side spray guns are provided on the bed body and installed on one side or both sides of the fluidized chamber bed body. Some or all of the side spray guns are inclined towards one end of the bed body, and the inclination angle is 3°-30°. The side spray guns are also inclined in the height direction at the same time. A grille is provided below the side spray guns, and the distance between the grille and the muzzles of the side spray guns in the height direction is 100-1000 mm.

2. The inclined side-jet continuous spray fluidized bed according to claim 1, wherein: The side spray guns are arranged in multiple rows with different heights in the fluidized chamber.

3. The side spray continuous spray fluidized bed arranged obliquely according to claim 1, characterized in that: Side spray guns are respectively provided on both sides of the bed body, and the side spray guns on both sides are staggered in the length direction of the bed body. The distance between two adjacent staggered side spray guns is 150-600 mm.

4. A laterally-arranged side-jet continuous spray fluidized bed according to claim 1, characterized in that: Side spray guns are respectively provided on both sides of the bed body, and the side spray guns on both sides are symmetrically arranged or approximately symmetrically arranged. When approximately symmetrically arranged, the height difference between the installation positions of two adjacent side spray guns on both sides is 0-150 mm, and the distance between the shortest positions of the axes of two adjacent side spray guns on both sides is greater than 0 and less than 150 mm.

5. A laterally sprayed continuous spray fluidized bed arranged obliquely according to claim 1, characterized in that: All the side spray guns are inclined towards the discharge end of the bed body.

6. A side spray continuous spray fluidized bed arranged obliquely as described in claim 1, characterized in that: All the side spray guns are inclined towards the reverse end of the bed body discharge port.

7. A laterally-arranged side-spray continuous spray fluidized bed according to claim 1, characterized in that: Some of the side spray guns are inclined towards the discharge port end and some are inclined towards the reverse end of the discharge port.

8. A laterally-arranged side-jet continuous spray fluidized bed according to claim 1, wherein: Blades facing upwards or downwards or both upwards and downwards are provided on the grille bars of the grille.

9. The inclined side spray continuous spray fluidized bed according to claim 1, characterized in that: The angle between the grille bars arranged along the width direction of the bed body and the vertical line is 0-30°.

10. A laterally-arranged side-jet continuous spray fluidized bed according to any one of claims 1-9, characterized in that: The fluidized chamber includes an internal heating fluidized chamber.

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