A pseudo-boehmite carbonization synthesis reaction device

Abstract

The present application relates to the technical fields of pseudo-boehmite synthesis, and discloses a pseudo-boehmite carbonization synthesis reaction device, which comprises a supporting cover, a support fixedly arranged on the supporting cover, a uniform cutting structure, a uniform discharge structure and a placing frame fixedly arranged on the supporting cover. The uniform cutting structure comprises a transmission shaft rotatably arranged on the support, a connecting flange fixedly arranged on the transmission shaft, a stirring shaft fixedly arranged on the connecting flange, a plurality of connecting sleeves fixedly arranged on the stirring shaft at equal intervals along the axial direction of the stirring shaft, and a turbulence plate fixedly arranged on each connecting sleeve. The uniform discharge structure comprises the placing frame fixedly arranged on the supporting cover. The present application effectively eliminates the high concentration gradient zone formed when the single-pipe jet flow enters the reaction kettle, makes the gas content distribution of each region in the reaction kettle more uniform, tends to balance the carbonization reaction intensity in the whole range, and significantly enhances the stability and controllability of the carbonization process.

Description

Technical Field

[0001] This invention relates to the field of boehmite synthesis technology, and more specifically to a boehmite carbonization synthesis reaction apparatus. Background Technology

[0002] Boehmite, also known as monohydrate alumina or pseudo-boehmite, is synthesized by carbonization by introducing carbon dioxide into a sodium aluminate solution to control the gelation process and generate boehmite crystals.

[0003] Chinese Patent CN222342865U discloses a pseudo-boehmite carbonization device, including a base plate. A reaction vessel is fixedly installed on the top of the base plate. A gas storage tank is fixedly installed on the left side of the top of the base plate. A through hole is opened on the right side of the gas storage tank. A connecting box is fixedly installed on the right side of the gas storage tank. A round tube is fixedly sleeved on the top of the right side of the connecting box. The right end of the round tube is fixedly connected to the outer surface of the reaction vessel. By setting the through hole, sealing plug, movable rod, and push rod, the operator can input carbon dioxide into the gas storage tank through the gas inlet pipe. Since the capacity of the gas storage tank is fixed, the input amount of carbon dioxide can be controlled.

[0004] However, the existing technology still has some technical problems: carbon dioxide enters the reactor in the form of a jet through a single circular tube on the side wall, forming a high concentration gradient field centered on the gas inlet in the reactor, which causes the reaction in this area to be abnormally violent. Due to the rapid absorption of carbon dioxide, it is very easy to generate heterocrystalline phases such as alumina trihydrate. Moreover, the configuration of the stirrer is not compatible with the gas inlet method, resulting in insufficient bubble shearing and dispersion, uneven gas content distribution in the reactor, and exacerbating the differences in reaction space in the reactor.

[0005] Therefore, this invention proposes a pseudoboehmite carbonization synthesis reaction apparatus. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a pseudo-boehmite carbonization synthesis reaction device. By using a built-in vertical box for pre-dispersion and multi-point balanced gas distribution, combined with the synchronous shearing of the turbulent cutting plate, it achieves the effects of suppressing the formation of impurity phases, improving the uniformity of gas content in the reactor, and enhancing the stability of the carbonization reaction.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: This invention provides a pseudoboehmite carbonization synthesis reaction apparatus, comprising: a support cover, on which a support is fixedly disposed, and further comprising: The uniform cutting structure includes a drive shaft rotatably mounted on the support, a connecting flange fixedly mounted on the drive shaft, a stirring shaft fixedly mounted on the connecting flange, a plurality of connecting sleeves fixedly mounted on the stirring shaft, the plurality of connecting sleeves being fixedly arranged at equal intervals along the axial direction of the stirring shaft, each connecting sleeve being fixedly mounted with a cutting plate, and a drive assembly fixedly mounted on the stirring shaft. And, the uniform discharge structure includes a mounting frame fixedly mounted on the support cover, an internal vertical box fixedly mounted on the mounting frame, a stirring shaft rotatably mounted on the internal vertical box, an air supply pipe fixedly mounted on the mounting frame, and a discharge assembly fixedly mounted on the internal vertical box; The built-in vertical box is provided with an upper cavity and a lower cavity, and a first enclosure plate and a second enclosure plate are fixedly installed in the lower cavity; The first enclosure is provided with a plurality of flow collecting plates at intervals along the vertical direction, and the spacing between adjacent flow collecting plates is equal; The venting assembly includes a plurality of vent pipes fixedly disposed at equal intervals on the second enclosure, an vent chamber disposed on the vent pipe, and a chamfered surface disposed on the vent pipe; The gas delivery pipe is connected to the lower cavity; The two adjacent shearing plates are offset by the same angle in the circumferential direction of the stirring shaft to achieve a circumferentially equal phase difference arrangement, and each shearing plate is spatially positioned exactly opposite the exhaust chamber outlet of one of the exhaust pipes.

[0008] Preferably, a drive wheel is fixedly mounted on the stirring shaft, and a belt is rotatably mounted on the drive wheel, with the drive wheel located inside the upper cavity.

[0009] Preferably, the drive assembly includes an external sleeve rotatably mounted on the built-in vertical box, and a driven wheel fixedly mounted on the external sleeve. The belt is rotatably mounted on the driven wheel, and the external sleeve is located inside the upper cavity.

[0010] Preferably, the external sleeve is rotatably fitted onto the outer periphery of the gas transmission pipe.

[0011] Preferably, a first gear is fixedly mounted on the external sleeve, a second gear is meshed on the first gear, a rotating shaft is fixedly mounted on the second gear, and the rotating shaft is rotatably mounted on the internal vertical box.

[0012] Preferably, one end of the rotating shaft extends into the lower cavity, and multiple wheel axle sleeves are fixedly arranged at equal intervals on the rotating shaft, with a helical blade fixedly arranged on each wheel axle sleeve.

[0013] Preferably, a guide hole is provided on the chamfered surface, and an exhaust hole is provided on the wall surface of the exhaust chamber.

[0014] Preferably, the guide hole and the exhaust hole are sealed and connected by a sealing cylinder, and a check valve plate is fixedly installed in the exhaust chamber.

[0015] Preferably, an outer tank, a support, and a discharge connector are fixedly mounted on the support cover, a motor is fixedly mounted on the support, a drive shaft is mounted on the output end of the motor, and an inner liner is coaxially fixedly mounted in the outer tank.

[0016] Compared with existing technologies, the beneficial effects achieved by this invention are as follows: By pre-dispersing carbon dioxide in the built-in vertical box, the high concentration gradient zone formed when a single-tube jet enters the reactor is effectively eliminated, avoiding the formation of impurity phases such as alumina trihydrate caused by local supersaturation reaction, thus improving product purity from the source; the multi-point evenly arranged exhaust pipes, in conjunction with the synchronously rotating turbulent shearing plate, make the bubbles discharged from each exhaust port more consistent in particle size and diffusion state, greatly improving the bubble shearing and dispersion effect, and making up for the defects of the mismatch between the original air intake method and the stirrer configuration; it can make the gas content distribution in each area of ​​the reactor more uniform, and the carbonization reaction intensity tends to be balanced throughout the entire range, significantly enhancing the stability and controllability of the carbonization process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the boehmite carbonization synthesis reactor. Figure 2 A schematic diagram of the built-in vertical box of the pseudoboehmite carbonization synthesis reactor; Figure 3 A schematic diagram of the internal structure of the built-in vertical box of the pseudoboehmite carbonization synthesis reactor; Figure 4 A schematic diagram of the stirring shaft of the pseudoboehmite carbonization synthesis reactor; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 A schematic diagram of the exhaust pipe of the pseudoboehmite carbonization synthesis reactor; Figure 7 Schematic diagram of the first and second enclosure plates of the pseudoboehmite carbonization synthesis reactor; Figure 8 A schematic diagram of the sealed cylinder of the pseudoboehmite carbonization synthesis reactor; Figure 9 A cross-sectional schematic diagram of the exhaust pipe of the pseudoboehmite carbonization synthesis reactor; Figure 10 A schematic diagram of the overall reactor for the carbonization synthesis of boehmite. Figure 11 Line graph showing verification data of structural variables in the pseudoboehmite carbonization synthesis reactor; Figure 12 Line graphs comparing three indicators under different combinations of spatially aligned and circumferentially staggered eccentrically arranged ...

[0018] Reference numerals: 101, Support cover; 102, Outer tank; 103, Inner liner; 104, Discharge connector; 200, Uniform cutting structure; 201, Stirring shaft; 202, Connecting sleeve; 203, Uniform cutting plate; 204, Connecting flange; 205, Drive shaft; 2061, Drive wheel; 2062, Belt; 300, Uniform discharge structure; 301, Internal vertical box; 301a, Upper cavity; 301b, Lower cavity; 302, Mounting frame; 303, Gas supply pipe; 304, First enclosure plate; 3 05. Second enclosure plate; 305a. Collector plate; 3061. External sleeve; 3062. Driven wheel; 3063. First gear; 3064. Second gear; 3065. Shaft; 3066. Wheel and axle sleeve; 3067. Spiral blade; 3071. Exhaust pipe; 3072. Exhaust chamber; 3073. Chamfered surface; 3074a. Guide hole; 3074b. Exhaust hole; 3075. Sealing cylinder; 3076. Check valve plate; 401. Support; 402. Motor. Detailed Implementation

[0019] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solution of the present invention, rather than limitations thereof.

[0020] like Figure 1 - Figure 10 As shown, this embodiment provides a pseudoboehmite carbonization synthesis reaction apparatus, including a support cover 101, on which a support 401 is fixedly mounted, and further including: The uniform cutting structure 200 includes a drive shaft 205, a connecting flange 204, a stirring shaft 201, multiple connecting sleeves 202, a shredding plate 203, and a drive assembly. The drive shaft 205 is rotatably mounted on a support 401, the connecting flange 204 is fixedly mounted on the drive shaft 205, the stirring shaft 201 is fixedly mounted on the connecting flange 204, the multiple connecting sleeves 202 are fixedly mounted on the stirring shaft 201, the multiple connecting sleeves 202 are fixedly mounted at equal intervals along the axial direction of the stirring shaft 201, each connecting sleeve 202 is fixedly mounted with a shredding plate 203, and the drive assembly is fixedly mounted on the stirring shaft 201. The uniform discharge structure 300 includes a mounting frame 302, an internal vertical box 301, an air supply pipe 303, and a discharge assembly. The mounting frame 302 is fixedly mounted on the support cover 101, the internal vertical box 301 is fixedly mounted on the mounting frame 302, the stirring shaft 201 is rotatably mounted on the internal vertical box 301, the air supply pipe 303 is fixedly mounted on the mounting frame 302, and the discharge assembly is fixedly mounted on the internal vertical box 301. Two adjacent shearing plates 203 are offset by the same angle around the stirring shaft 201.

[0021] The support cover 101 is fixedly equipped with an outer tank 102, a support 401 and a discharge connector 104. The support 401 is fixedly equipped with a motor 402. The output end of the motor 402 is equipped with a drive shaft 205. The outer tank 102 is coaxially fixedly equipped with an inner liner 103.

[0022] The entire built-in vertical box 301 is located in the inner liner 103, and there is a gap between the bottom of the built-in vertical box 301 and the bottom of the inner liner 103.

[0023] The motor 402 is used to control the rotation of the drive shaft 205. The motor 402 is fixedly connected to the support cover 101 through the support 401. The motor 402 and the drive shaft 205 provide power for the operation of the uniform cutting structure 200.

[0024] The internal vertical box 301 is provided with an upper cavity 301a and a lower cavity 301b. A first surrounding plate 304 and a second surrounding plate 305 are fixedly installed in the lower cavity 301b. The first surrounding plate 304 is provided with a plurality of flow collecting plates 305a at intervals along the vertical direction, and the spacing between adjacent flow collecting plates 305a is equal. A drive wheel 2061 is fixedly installed on the stirring shaft 201, and a belt 2062 is rotatably installed on the drive wheel 2061. The drive wheel 2061 is located in the upper cavity 301a. The drive assembly includes an outer sleeve 3061 rotatably installed on the internal vertical box 301 and a driven wheel 3062 fixedly installed on the outer sleeve 3061. A belt 2062 is rotatably installed on the driven wheel 3062. The outer sleeve 3061 is located in the upper cavity 301a.

[0025] Among them, the gas supply pipe 303 is connected to the lower cavity 301b, and the external sleeve 3061 is rotatably sleeved on the outer periphery of the gas supply pipe 303.

[0026] In use, the staff installs the mounting frame 302 on the support cover 101 and fixes the stirring shaft 201 and the drive shaft 205 together through the connecting flange 204 to ensure stable power transmission. The stirring shaft 201 and the built-in vertical box 301 are a whole. The stirring shaft 201 rotates in the upper chamber 301a and the lower chamber 301b. The rotating stirring shaft 201 is used on the one hand to drive the shearing plate 203 to rotate and shear the exhaust section of each exhaust pipe 3071, and on the other hand to provide power for the rotation of the rotating shaft 3065.

[0027] It should be noted that the stirring shaft 201 drives the driven wheel 3062 to rotate through the driving wheel 2061 and the belt 2062. The driven wheel 3062 drives the outer sleeve 3061 to rotate inside the upper cavity 301a. Since the outer sleeve 3061 is rotatably located on the outer periphery of the gas delivery pipe 303, the rotation of the outer sleeve 3061 does not affect the gas delivery pipe 303 from discharging carbon dioxide into the lower cavity 301b. The carbon dioxide discharged into the lower cavity 301b will enter the collecting plate 305a and fill the space formed by the first enclosure plate 304 and the second enclosure plate 305.

[0028] Furthermore, a first gear 3063 is fixedly mounted on the outer sleeve 3061, and a second gear 3064 is meshed on the first gear 3063. A rotating shaft 3065 is fixedly mounted on the second gear 3064, and the rotating shaft 3065 is rotatably mounted on the inner vertical box 301. One end of the rotating shaft 3065 extends into the lower cavity 301b, and multiple wheel axle sleeves 3066 are fixedly mounted on the rotating shaft 3065 at equal intervals. Each wheel axle sleeve 3066 is fixedly mounted with a helical blade 3067.

[0029] The rotating outer sleeve 3061 drives the first gear 3063 to rotate, the rotating first gear 3063 drives the second gear 3064 to rotate, the rotating second gear 3064 drives the rotating shaft 3065 to rotate, the rotating shaft 3065 drives the wheel axle sleeve 3066 and the spiral blade 3067 to rotate. The rotation direction of the rotating shaft 3065 is consistent with the tilt angle direction of the spiral blade 3067 on the wheel axle sleeve 3066. When the spiral blade 3067 rotates, the windward surface of the spiral blade 3067 will generate an axial pushing force on the gas, rather than reverse blocking or shearing disorder, thereby ensuring that the carbon dioxide gas is orderly pushed to the chamfered surface 3073 along the axial direction, avoiding turbulent short circuit. Moreover, the spiral blade 3067 continuously pushes the gas along the axial direction, so that the gas concentration tends to be uniform in the circumferential and axial sections of the pre-distribution space, thereby eliminating the high concentration gradient field centered on the single-point air inlet.

[0030] It should be noted that when the spiral blade 3067 rotates and pushes the carbon dioxide gas axially to the chamfered surface 3073, the equally spaced collector plates 305a will generate local flow resistance to the carbon dioxide gas located in the lower cavity 301b, breaking the spiral short circuit or central high-speed flow band phenomenon that occurs in the circumferential direction of the carbon dioxide gas, so that the local pressure of the carbon dioxide gas in the region between adjacent collector plates 305a is rebalanced, thereby achieving a more uniform axial distribution.

[0031] Furthermore, the collector plate 305a forms a partition in the radial direction of the first enclosure plate 304, so that when the carbon dioxide gas passes through the gap between adjacent collector plates 305a, airflow mixing occurs, causing concentration exchange of carbon dioxide gas at different radial positions. This reduces the radial concentration difference of carbon dioxide in the space enclosed by the first enclosure plate 304 and the second enclosure plate 305, and enhances the consistency and uniformity of the overall concentration field.

[0032] Before entering the main reactor, carbon dioxide is pre-dispersed in the built-in vertical box 301, eliminating the high concentration gradient zone and local supersaturation reaction caused by direct injection of single-tube jet into the reactor. This suppresses the conditions for the formation of impurity phases such as alumina trihydrate in the reactor liner 103 from the source. After pre-homogenization, the carbon dioxide gas has a more uniform concentration distribution when it enters the liner 103, making up for the defects of insufficient bubble shear dispersion and uneven gas content distribution caused by the mismatch between the original gas inlet method and the stirrer configuration. This makes the reaction in each area of ​​the reactor more balanced, ultimately increasing the uniformity of the carbonization reaction process and improving the purity and quality of the product.

[0033] Furthermore, the venting assembly includes multiple exhaust pipes 3071 fixedly arranged at equal intervals on the second enclosure 305, exhaust chambers 3072 disposed on the exhaust pipes 3071, and chamfered surfaces 3073 disposed on the exhaust pipes 3071. A guide hole 3074a is provided on the chamfered surface 3073, and an exhaust hole 3074b is provided on the wall of the exhaust chamber 3072. The guide hole 3074a and the exhaust hole 3074b are sealed and connected by a sealing cylinder 3075, and a check valve plate 3076 is fixedly disposed in the exhaust chamber 3072.

[0034] Multiple sets of turbulent shearing plates 203 are fixedly installed on the stirring shaft 201. Adjacent turbulent shearing plates 203 are staggered by the same angle in the circumferential direction of the stirring shaft 201 to achieve a circumferentially equal phase difference arrangement. Each turbulent shearing plate 203 is spatially aligned with the exhaust chamber 3072 outlet of an exhaust pipe 3071. When the stirring shaft 201 rotates, all turbulent shearing plates 203 rotate synchronously. Each turbulent shearing plate 203 periodically cuts and disturbs the carbon dioxide gas flow discharged from the corresponding exhaust hole 3074b. This one-to-one correspondence combined with the equiangular staggered arrangement ensures that at any given time, the gas flow at the outlet of each exhaust chamber 3072 is subjected to the same phase and the same intensity of turbulent shearing action, avoiding differences in shear strength between the outlets of each exhaust chamber 3072, thereby ensuring that the carbon dioxide bubble density tends to be consistent in the circumferential direction.

[0035] It should be noted that, as Figure 11As shown, from the complete structure to the removal of the helical blades and then to the elimination of the shearing of the turbulent shear plate 203, the coefficient of variation of gas holdup increased from about 4.5% to 22% and 34% respectively, and the mass fraction of alumina trihydrate impurities also increased from about 0.4% to 2.4% and 3.7% respectively. The two curves show the same trend, which indicates that once the circumferential isophase arrangement of the turbulent shear plate 203 is destroyed, the shear strength of the bubbles at each exhaust port varies, the uniformity of gas holdup decreases, and the amount of impurity formation increases accordingly. These data show that after the turbulent shear plate 203 and the exhaust pipe 3071 are matched one-to-one, the local supersaturated reaction conditions are weakened, the formation of impurity phases is suppressed, the uniformity of product phases is improved, the formation of impurity phases such as alumina trihydrate caused by local supersaturated reaction is avoided, and the bubbles discharged from each exhaust port tend to be consistent in particle size and diffusion state.

[0036] The shear plate 203 cuts the continuous airflow or large bubbles discharged from the exhaust chamber 3072 into small bubbles, greatly increasing the gas-liquid contact area and improving the carbonization mixing efficiency. The rotation of the shear plate 203 drives the surrounding liquid to form a local vortex, which generates a lateral drag force on the just discharged bubbles. This causes the bubbles to not rise in a straight line in a single direction after leaving the exhaust chamber 3072, but to be forced to diffuse in all directions, achieving rapid and uniform dispersion of the intake air in multiple dimensions. Since all the shear plates 203 are arranged in equal phase along the circumference and rotate synchronously, the outflow state at the outlet of each exhaust chamber 3072 is exactly the same. The bubble groups generated at each point superimpose and fill the gaps between each other in the radial and axial directions of the reactor, ultimately making the carbon dioxide concentration field and bubble distribution in the entire reactor tend to be uniform across the entire region. This eliminates the non-uniform concentration gradient field centered on the air inlet in the original single-tube jet mode, providing a reaction environment with a consistent gas content for subsequent reactions.

[0037] It should be noted that when the exhaust chamber 3072 is filled with carbon dioxide gas and a positive pressure is established, the check valve 3076 is opened by the gas thrust, and the carbon dioxide gas is discharged outward from the exhaust port 3074b. When the gas pressure in the exhaust chamber 3072 drops or a reverse pressure difference occurs, the check valve 3076 closes quickly to prevent liquid or gas in the reactor from flowing back into the exhaust chamber 3072 and the interior of the built-in vertical box 301, thus avoiding contamination or blockage of the pre-distribution space.

[0038] It should be noted that the sealing cylinder 3075 rigidly seals the guide hole 3074a on the chamfered surface 3073 with the exhaust hole 3074b on the wall of the exhaust chamber 3072, forming a closed intermediate guide channel. When the carbon dioxide gas pushed by the spiral blade 3067 enters the guide hole 3074a of the exhaust pipe 3071, the flow cross-sectional area suddenly shrinks, the airflow velocity increases and the pressure decreases. After entering the sealing cylinder 3075, the gas flows through a closed cavity of fixed volume. This cavity acts as a buffer container, which reduces the pressure fluctuation of the airflow inside the sealing cylinder 3075 and makes the airflow velocity tend to be stable. Subsequently, when the gas is discharged from the exhaust hole 3074b, it ensures that each exhaust pipe 3071 has the same outlet flow rate under the same inlet pressure.

[0039] Furthermore, the sealing cylinder 3075 introduces a straight or short pipe channel between the guide hole 3074a and the exhaust hole 3074b, so that the airflow re-forms a regular flow direction before entering the exhaust hole 3074b, avoiding uneven flow velocity distribution at the outlet of the exhaust hole 3074b due to the eccentric position of the guide hole 3074a or the oblique guidance of the chamfered surface 3073, and ensuring that the airflow velocity field distribution at the outlet of each exhaust pipe 3071 is consistent.

[0040] Before carbon dioxide enters the inner liner 103 of the reactor, it is pre-dispersed. Then, multi-point balanced discharge and shearing are adopted in the reactor to eliminate the local high concentration gradient field and supersaturated reaction area caused by single-tube jet. This avoids the formation conditions of impurity phases such as alumina trihydrate. At the same time, multi-point synchronous outflow combined with circumferential phase disordered shearing makes the particle size and diffusion state of the bubbles entering the reactor from all directions tend to be consistent. The gas content is evenly distributed throughout the entire range, which makes up for the defects of insufficient bubble shearing and dispersion caused by the mismatch between the original gas inlet method and the agitator. Finally, the reaction intensity in each area of ​​the reactor is balanced, which greatly improves the product purity and stability in the carbonization reaction.

[0041] It should be noted that, as Figure 12As shown, in comparison group 1, the spatial positional relationship between the shear plate 203 and the outlet of the exhaust chamber 3072 is completely misaligned, with a circumferential deviation greater than 90°, and the circumferential phase arrangement of the shear plate 203 is completely randomly staggered, resulting in an irregular phase difference. In comparison group 2, the spatial positional relationship between the shear plate 203 and the outlet of the exhaust chamber 3072 is partially misaligned, with a circumferential deviation of 45°, and the circumferential phase arrangement of the shear plate 203 is staggered with non-equivalent phase differences. In comparison group 3, the spatial positional relationship between the shear plate 203 and the outlet of the exhaust chamber 3072 is directly opposite, with a circumferential deviation less than 15°. In comparison group 4, the circumferential phase arrangement of the shear plate 203 adopts a non-uniform phase difference staggered arrangement, resulting in an uneven phase difference. In comparison group 5, the spatial positional relationship between the shear plate 203 and the exhaust cavity 3072 outlet is completely misaligned, with a circumferential deviation greater than 90°. The circumferential phase arrangement of the shear plate 203 adopts a full circumferential phase difference staggered arrangement. In comparison group 6, there is no shear plate 203 structure.

[0042] In experimental groups 1, 2, 3, 4, 5 and 6, the spatial positional relationship between the shear plate 203 and the outlet of the exhaust chamber 3072 is that they are directly opposite each other, and the circumferential phase arrangement of the shear plate 203 adopts a full circumferential phase difference staggered arrangement.

[0043] The experimental results corresponding to the line graph show that only when the shear plate 203 and the outlet space of the exhaust chamber 3072 are directly aligned and the shear plate 203 is circumferentially staggered by equal phase difference, do the three indicators of circumferential bubble density distribution deviation, circumferential non-uniformity of gas holdup, and XRD content of alumina trihydrate impurities simultaneously show a significant and stable decrease. These decreases are significantly lower than those in the control groups of complete misalignment, non-equivalent phase difference misalignment, full circumferential phase difference misalignment but not spatially aligned, and spatially aligned but non-equivalent phase difference misalignment. This indicates that the effect is not solely due to the misaligned propeller itself, nor is it... This cannot be achieved simply by spatial alignment or phase misalignment. Instead, it requires a one-to-one spatial alignment between the shear plate 203 and the outlet of the exhaust chamber 3072, while simultaneously ensuring that each shear plate 203 is staggered by a phase difference along the circumferential direction of the stirring shaft 201. This ensures that the bubbles at the outlet of each exhaust chamber 3072 are subjected to shearing and disturbance of the same phase and intensity at any given time. Consequently, the bubbles discharged from each exhaust port tend to be consistent in terms of particle size, diffusion state, and circumferential distribution. Ultimately, this results in a more uniform gas content distribution within the reactor, a more balanced carbonization reaction intensity across the entire range, and the suppression of the formation of heteromorphic phases such as alumina trihydrate.

[0044] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0045] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A pseudoboehmite carbonization synthesis reaction apparatus, comprising: The support cover (101), on which a support (401) is fixedly disposed, is characterized in that it further includes: The uniform cutting structure (200) includes a drive shaft (205) rotatably mounted on the support (401), a connecting flange (204) fixedly mounted on the drive shaft (205), a stirring shaft (201) fixedly mounted on the connecting flange (204), a plurality of connecting sleeves (202) fixedly mounted on the stirring shaft (201), the plurality of connecting sleeves (202) being fixedly mounted at equal intervals along the axial direction of the stirring shaft (201), each connecting sleeve (202) being fixedly mounted with a shredding plate (203), and a drive assembly fixedly mounted on the stirring shaft (201). And, the uniform discharge structure (300) includes a mounting frame (302) fixedly mounted on the support cover (101), an internal vertical box (301) fixedly mounted on the mounting frame (302), a stirring shaft (201) rotatably mounted on the internal vertical box (301), an air supply pipe (303) fixedly mounted on the mounting frame (302), and a discharge assembly fixedly mounted on the internal vertical box (301); The built-in vertical box (301) is provided with an upper cavity (301a) and a lower cavity (301b) respectively. A first enclosure plate (304) and a second enclosure plate (305) are fixedly provided in the lower cavity (301b). The first enclosure (304) is provided with a plurality of flow collecting plates (305a) spaced apart in the vertical direction, and the spacing between adjacent flow collecting plates (305a) is equal; The venting assembly includes a plurality of vent pipes (3071) fixedly arranged at equal intervals on the second enclosure (305), an vent chamber (3072) arranged on the vent pipes (3071), and a chamfered surface (3073) arranged on the vent pipes (3071). The gas delivery pipe (303) is connected to the lower cavity (301b); The two adjacent shearing plates (203) are offset by the same angle in the circumferential direction of the stirring shaft (201) to achieve a full circumferential equal phase difference arrangement. Each shearing plate (203) is exactly opposite to the exhaust chamber (3072) outlet of one of the exhaust pipes (3071).

2. The boehmite carbonization synthesis apparatus according to claim 1, characterized in that, A drive wheel (2061) is fixedly mounted on the stirring shaft (201), and a belt (2062) is rotatably mounted on the drive wheel (2061). The drive wheel (2061) is located inside the upper cavity (301a).

3. The pseudoboehmite carbonization synthesis reaction apparatus according to claim 2, characterized in that, The drive assembly includes an external sleeve (3061) rotatably mounted on the built-in vertical box (301) and a driven wheel (3062) fixedly mounted on the external sleeve (3061). The belt (2062) is rotatably mounted on the driven wheel (3062), and the external sleeve (3061) is located in the upper cavity (301a).

4. The boehmite carbonization synthesis apparatus according to claim 3, characterized in that, The external sleeve (3061) is rotatably fitted onto the outer periphery of the gas transmission pipe (303).

5. The boehmite carbonization synthesis apparatus according to claim 4, characterized in that, A first gear (3063) is fixedly installed on the external sleeve (3061), a second gear (3064) is meshed on the first gear (3063), and a rotating shaft (3065) is fixedly installed on the second gear (3064). The rotating shaft (3065) is rotatably mounted on the internal vertical box (301).

6. The boehmite carbonization synthesis apparatus according to claim 5, characterized in that, One end of the rotating shaft (3065) extends into the lower cavity (301b). Multiple wheel axle sleeves (3066) are fixedly arranged at equal intervals on the rotating shaft (3065), and each wheel axle sleeve (3066) is fixedly arranged with a spiral blade (3067).

7. The boehmite carbonization synthesis apparatus according to claim 6, characterized in that, A guide hole (3074a) is provided on the chamfered surface (3073), and an exhaust hole (3074b) is provided on the wall of the exhaust chamber (3072).

8. The boehmite carbonization synthesis apparatus according to claim 7, characterized in that, The flow guide hole (3074a) and the exhaust hole (3074b) are sealed and connected by a sealing cylinder (3075), and a check valve plate (3076) is fixedly installed in the exhaust chamber (3072).

9. The boehmite carbonization synthesis apparatus according to claim 8, characterized in that, The support cover (101) is fixedly provided with an outer tank (102), a support (401) and a discharge connector (104). The support (401) is fixedly provided with a motor (402). The output end of the motor (402) is provided with a transmission shaft (205). The outer tank (102) is coaxially fixedly provided with an inner liner (103).

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