Optimized device for the calciumation of sodium alginate
By optimizing the structure of the reaction vessel and the design of the stirring shaft, and combining the rotating spray head and baffle plate, the problems of insufficient material mixing and waste of calcium water in the sodium alginate calcification reaction device were solved, achieving efficient calcification reaction and uniform mixing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QINGDAO BRIGHT MOON SEAWEED GROUP
- Filing Date
- 2023-09-26
- Publication Date
- 2026-07-03
AI Technical Summary
In existing sodium alginate calcification reactors, the material reaction is incomplete, calcium water is wasted in large quantities, the mixing effect is poor, and the design of the stirring blades cannot be adjusted, which leads to increased calcium water consumption.
The design employs a gradient stirring shaft, including first, second, and multi-layer third stirring blades. Combined with optimized reaction vessel structure, it increases the calcium water inlet and utilizes rotating spray heads and baffles to improve mixing efficiency and uniformity.
This method enables rapid mixing of sodium alginate solution and calcium solution, improving the uniformity and efficiency of the calcification reaction, reducing calcium solution consumption, and avoiding calcium solution waste.
Smart Images
Figure CN117258730B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of seaweed extraction and production technology, and more specifically, to an optimized sodium alginate calcification reaction apparatus. Background Technology
[0002] During the calcification reaction of sodium alginate, a chemical reaction occurs between the sodium alginate solution and calcium solution in the reaction vessel. Stirring improves the uniform mixing of the two and enhances the reaction effect. The ratio of the alginate solution to the calcium solution is approximately 100:1, and the flow rate of the alginate solution reaches 100 m³ / h. 3 With a flow rate of over / h, the likelihood of the adhesive and calcium solution mixing evenly is extremely low.
[0003] Currently, the calcification reaction equipment has the following problems: First, the old-style reaction tanks have the same diameter from top to bottom, resulting in a short residence time of materials inside the tank, incomplete reaction, and unreacted calcium solution being carried out to the next process, causing waste of calcium solution; Second, the old-style stirring blades are made of nylon, with a simple one-piece molding design, all being two-blade inclined plates, and the angle and spacing cannot be adjusted. This makes it impossible to adjust the stirring blade style according to the state of the materials after reaction, resulting in poor mixing effect, requiring an increase in the amount of calcium solution added to compensate, leading to increased consumption of calcium solution. Summary of the Invention
[0004] To address the aforementioned issues, this application provides an optimized sodium alginate calcification reaction apparatus. Through the coordinated design of the reaction vessel structure and gradient stirring, rapid mixing of sodium alginate solution and calcium solution can be achieved, improving the mixing effect and solving the technical problems of high calcium solution consumption and poor mixing uniformity.
[0005] This application provides an optimized sodium alginate calcification reaction apparatus, which includes a reaction tank composed of a first part and a second part. The diameter of the second part of the tank is larger than the diameter of the first part of the tank, which facilitates thorough mixing of materials.
[0006] The reaction vessel is equipped with a stirring shaft, and the stirring shaft is provided with a first stirring fin, a second stirring fin, and multiple layers of third stirring fins at intervals from bottom to top.
[0007] The second stirring fin is located inside the second tank section. During operation, the sodium alginate solution and calcium water are mixed and contacted by the first stirring fin. The mixture is stirred by the first stirring fin and floats to the second tank section. The material is then stirred by the second stirring fin to fully mix it. Finally, the third stirring fin stirs the mixture so that the calcium alginate flocculent material precipitated by the calcification reaction is output from the tank section.
[0008] Compared with the prior art, this application achieves at least one of the following beneficial effects:
[0009] (1) The optimized sodium alginate calcification reaction device of this application can achieve rapid mixing of sodium alginate colloid and calcium water through the reaction tank structure design and gradient stirring, thereby improving the mixing effect and enhancing the uniformity of the calcification reaction.
[0010] (2) In the optimized sodium alginate calcification reaction device of this application, the stirring shaft is provided with a first stirring fin, a second stirring fin, and a multi-layer third stirring fin from bottom to top. During operation, the sodium alginate colloid and calcium water are mixed and contacted by the first stirring fin. The first stirring fin stirs the material to float to the second tank, where the second stirring fin stirs the material to fully mix it. Then, the third stirring fin stirs the material to spirally output the calcium alginate flocculent material precipitated by the calcification reaction into the tank. This application improves the mixing effect of the material through the design of the stirring fin and the tank, so that the material can fully carry out the calcification reaction.
[0011] (3) The optimized sodium alginate calcification reaction device of this application sets a second calcium water inlet on the basis of the first calcium water inlet, so that the calcium water concentration can be added in a certain gradient, avoiding excessive calcium water addition at the first calcium water inlet, which would lead to calcium water waste. Attached Figure Description
[0012] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0013] Figure 1 An exemplary embodiment of the optimized sodium alginate calcification reaction apparatus of this application is shown in the schematic diagram.
[0014] Figure 2 It shows Figure 1 Enlarged view of section A;
[0015] Figure 3 Image A shows a partial side view of the rotary spray head of this application along the direction of the arrow, and image B shows a front view of the rotary spray head of this application.
[0016] Figure 4 C shows a top view of the first stirring blade of this application, and D shows a cross-sectional view of the first stirring blade of this application along the dotted line.
[0017] Figure 5 Another exemplary embodiment is shown as a top view of the first stirring blade of this application;
[0018] Figure 6 E shows a front view of the second stirring blade of this application, and F shows a right view of the second stirring blade of this application;
[0019] Figure 7A right view of the third stirring blade of this application is shown.
[0020] Explanation of reference numerals in the attached figures:
[0021] 1-Motor; 2-Reducer; 3-Support; 4-First stirring blade; 5-Second stirring blade; 6-Third stirring blade; 7-Sodium alginate inlet; 8-Calcium alginate outlet; 9-First calcium water inlet; 10-Second calcium water inlet; 11-First section; 12-Second section; 13-Baffle plate; 121-First inclined sidewall; 122-Second vertical sidewall; 123-Third inclined sidewall. Detailed Implementation
[0022] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.
[0023] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.
[0024] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0025] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0026] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.
[0027] In a first exemplary embodiment of this application, the optimized sodium alginate calcification reaction apparatus includes a reaction vessel composed of a first part and a second part, wherein the diameter of the second part is larger than the diameter of the first part to facilitate thorough mixing of materials. For example, the diameter of the second part is 1.1-1.4 times the diameter of the first part. The second part of the reaction vessel is interposed in the middle of the first part, facilitating thorough mixing of materials during use.
[0028] A motor and a reducer can be installed on the top of the reaction vessel, and the motor is connected to the reducer; a stirring shaft is installed inside the reaction vessel, and the stirring shaft is connected to the reducer; the stirring shaft is provided with a first stirring fin, a second stirring fin, and multiple layers of third stirring fins at intervals from bottom to top.
[0029] The second stirring fin is located inside the second tank section. During operation, the sodium alginate solution and calcium water are mixed and contacted by the first stirring fin. The mixture is stirred by the first stirring fin and floats to the second tank section. The material is then stirred by the second stirring fin to fully mix it. Finally, the third stirring fin stirs the mixture so that the calcium alginate flocculent material precipitated by the calcification reaction is output from the tank section.
[0030] Specifically, the motor can be a variable frequency motor, the output end of the reducer is connected to a bracket, the upper end of the stirring shaft is connected to the bracket, and the other end of the stirring shaft is connected to the bottom support of the tank. For example, the bracket is provided with a connecting plate and a coupling, the connecting plate is provided with a bearing, the coupling is provided with a limit pin and a mounting groove, and the upper end of the stirring shaft is fixed in the mounting groove by the limit pin.
[0031] Specifically, the reaction vessel is equipped with a sodium alginate inlet and a first calcium water inlet at its lower part, and a calcium alginate outlet at its upper part. The sodium alginate inlet and the first calcium water inlet are arranged adjacent to each other and their centerlines are at the same height. By controlling the height and distance between the sodium alginate inlet and the first calcium water inlet within a certain range, the mixing degree of the sodium alginate solution and the calcium water can be promoted.
[0032] Preferably, a second calcium hydrate inlet can be provided at the second part of the tank. For example, the second calcium hydrate inlet and the second stirring blade are located at the same height. Furthermore, to avoid incomplete reaction due to insufficient calcium hydrate during the material reaction process, a certain amount of calcium hydrate can be added to the second calcium hydrate inlet according to the state of the material at the outlet. This application, by providing a second calcium hydrate inlet based on the first calcium hydrate inlet, allows the calcium hydrate concentration to be added in a certain gradient, avoiding excessive calcium hydrate addition at the first inlet and resulting waste. For example, the calcium hydrate concentration at the first inlet is 20%-30%, and the calcium hydrate concentration at the second inlet is 10%-15%.
[0033] Specifically, the first or second calcium hydrate inlet can be configured as a rotating spray head. Specifically, the rotating spray head has spray holes and blades along its edges. Furthermore, by configuring the first and second calcium hydrate inlets as rotating spray heads, the contact area between the calcium hydrate and the sodium alginate solution is increased, allowing for thorough mixing of the materials and further ensuring the uniformity of the calcification reaction. In addition, several blades are spaced apart along the edge of the rotating spray head. The calcium hydrate is introduced through the rotating spray head, while the blades simultaneously stir and mix the materials, further improving the mixing efficiency.
[0034] Specifically, the first, second, and multi-layered third stirring blades are all detachably mounted on the stirring shaft. The first stirring blade is a four-bladed stirring blade, the second stirring blade is a two-bladed downward-pressing stirring blade, and the multi-layered third stirring blade consists of several two-bladed upward-flipping stirring blades. Furthermore, since the first, second, and multi-layered third stirring blades are all detachably mounted on the stirring shaft, the spacing and angle of each stirring blade can be adjusted according to the height of the reaction vessel, making it adaptable to various types of reaction vessels. In addition, this facilitates improved mixing efficiency of alginate and calcium solution, enhances reaction results, and reduces calcium solution consumption.
[0035] In addition, during operation, the four-bladed agitator located below the reaction tank stirs and drives the alginate solution and calcium water to initially mix and react. Under the agitation of the first agitator, the material is lifted to the second part of the reaction tank. The diameter of the second part of the reaction tank is larger, which can slow down the rising speed of the material. Under the agitation of the two-bladed downward-pressing agitator, the material has enough time to mix evenly and carry out a full calcification reaction. At the same time, under the agitation of the multi-layered two-bladed upward-turning agitator, the flocculent calcium alginate precipitated after the calcification reaction can be spirally lifted to the material outlet at the top of the tank, preventing the material from agglomerating and causing shaft seizure, which would increase the load on the reducer.
[0036] For example, the first stirring blade is a four-bladed stirring blade, in which the four blades are evenly distributed, and the blades form an angle of 45°-60° with the stirring shaft. The second stirring blade is a two-bladed downward-pressing stirring blade, in which the blades form an angle of 30°-45° with the stirring shaft. The multi-layered third stirring blade consists of several two-bladed upward-turning stirring blades, in which the blades are arranged at certain intervals and staggered.
[0037] Preferably, the second stirring fin is positioned inside the second part of the reaction vessel, and the horizontal length of the second stirring fin is 0.5-0.8 times the diameter of the second part of the reaction vessel. This application further improves the sufficiency of the calcification reaction of the material by increasing the diameter of the second part of the reaction vessel to match the second stirring fin.
[0038] Specifically, the first, second, and third stirring blades can be made of metal, which improves the strength of the stirring blades and avoids the problem of stirring blade wobbling due to excessively long stirring shafts. At the same time, the metal stirring blades of this application can be cut and welded on-site, which facilitates the adjustment of the stirring blade angle and spacing, thereby improving the calcification reaction effect and reducing calcium water consumption.
[0039] Preferably, a baffle plate is provided inside the reaction vessel. The baffle plate is inclinedly disposed at the upper end of the wall of the second part of the reaction vessel. By setting the baffle plate above the wall of the second part of the reaction vessel, this application can further slow down the rising speed of the material, allowing the material sufficient time for the calcification reaction and ensuring its completeness. For example, the cross-section of the baffle plate is triangular. Furthermore, using a baffle plate with a triangular cross-section can prevent the material from accumulating at the baffle plate during the stirring process, thus avoiding incomplete calcification.
[0040] Optionally, in the optimized dimensional structure of the sodium alginate calcification reaction apparatus, the horizontal length of the first stirring fin is 0.5-0.8 times the diameter of the first part of the reaction tank, the length of the second stirring fin is 0.5-0.8 times the diameter of the second part of the reaction tank, the length of the third stirring fin is 0.5-0.8 times the diameter of the first part of the reaction tank, the diameter of the second part of the tank is 1.1-1.4 times the diameter of the first part of the tank, and the number of blades in the first stirring fin is 1.5-2 times the number of blades in the second or third stirring fin. This application controls the type and length of the stirring fins to ensure that the number of blades in the first stirring fin is greater than that in the second. The number of blades in the third stirring fin ensures thorough mixing while maintaining the degree of flocculation of the calcium alginate flocs. This ensures that the stirring speed of the first stirring fin is greater than that of the second stirring fin during coaxial rotation, driving the materials to mix rapidly. Simultaneously, the increased diameter of the second tank and the continued stirring action of the second stirring fin allow sufficient time for the materials to mix evenly and undergo a complete calcification reaction. The calcified calcium alginate flocs are then spirally discharged from the reaction tank by the stirring action of the third stirring fin, ensuring that the stirring during the discharge process is not too vigorous and maintaining the degree of flocculation of the calcium alginate flocs.
[0041] In a second exemplary embodiment of this application, based on the first exemplary embodiment, the structure of the second partial reaction vessel includes, from bottom to top, a first inclined sidewall, a second vertical sidewall, and a third inclined sidewall connected to each other. The first inclined sidewall is connected to the sidewall of the first partial reaction vessel, and the third inclined sidewall is also connected to the sidewall of the first partial reaction vessel. The cross-sectional view of the second partial reaction vessel is trapezoidal, where the first and third inclined sidewalls are the two sides of the trapezoid, and the second vertical sidewall is the upper base of the trapezoid. By providing the first inclined sidewall, this application facilitates the lifting of the initially mixed material to the second partial reaction vessel by the agitation of the first stirring shaft, thus improving work efficiency. The first inclined sidewall also serves to prevent the material from sinking in the second partial reaction vessel; the second inclined sidewall slows down the rising speed of the material and also facilitates the rapid lifting of the calcium alginate flocculent material after the calcification reaction.
[0042] Furthermore, in this embodiment, the baffle plate has a triangular cross-section. The first side of the baffle plate can coincide with the third vertical sidewall, and the second side of the baffle plate is fixed to the sidewall of the first part of the reaction vessel. In this design, the baffle plate serves to further slow down the rising speed of the material, ensuring the sufficiency of the calcification reaction. At the same time, it can prevent the material from accumulating in certain gaps, which could lead to incomplete reaction.
[0043] Figure 1 An exemplary embodiment of the optimized sodium alginate calcification reaction apparatus of this application is shown in the schematic diagram. Figure 2 It shows Figure 1 Enlarged view of section A; Figure 3Figure B shows a front view of the rotary spray head of this application, and Figure A shows a partial side view of the rotary spray head of this application along the direction of the arrow. Figure 4 C shows a top view of the first stirring blade of this application, and D shows a cross-sectional view of the first stirring blade of this application along the dotted line. Figure 5 Another exemplary embodiment is shown as a top view of the first stirring blade of this application; Figure 6 E shows a front view of the second stirring blade of this application, and F shows a right view of the second stirring blade of this application; Figure 7 A right view of the third stirring blade of this application is shown.
[0044] Example 3
[0045] In a third exemplary embodiment of this application, based on the above embodiments, reference is made to... Figures 1-6 As shown, the optimized sodium alginate calcification reaction apparatus includes a reaction vessel consisting of a first part 11 and a second part 12. The first part 11 and the second part 12 are connected to each other. The diameter of the second part 12 is larger than the diameter of the first part 11, which facilitates thorough mixing of materials.
[0046] refer to Figure 2 As shown, the structure of the second part 12 reaction vessel, from bottom to top, includes a first inclined sidewall 121, a second vertical sidewall 122, and a third inclined sidewall 123 that are interconnected. The first inclined sidewall 121 is connected to the sidewall of the first part 11 reaction vessel, and the third inclined sidewall 123 is connected to the sidewall of the first part 11 reaction vessel. The cross-sectional view of the second part 12 reaction vessel is trapezoidal.
[0047] The reaction vessel is equipped with a motor 1 and a reducer 2 on its top. The output end of the reducer 2 is connected to a bracket 3. The upper end of the stirring shaft is connected to the bracket 3, and the other end of the stirring shaft is connected to the bottom support of the vessel. The stirring shaft is provided with a first stirring fin 4, a second stirring fin 5, and several third stirring fins 6 at intervals from bottom to top. The second stirring fin 5 is located inside the second part 12. During operation, the sodium alginate solution and calcium solution are mixed and contacted by the first stirring fin 4. The solution is stirred by the first stirring fin 4 and floats to the second part 12 of the vessel body, where it is stirred by the second stirring fin 5 to fully mix the materials. Then, it is stirred by the several third stirring fins 6, causing the calcium alginate flocculent material precipitated from the calcification reaction to be spirally discharged from the vessel body.
[0048] A sodium alginate inlet 7 and a first calcium hydrate inlet 9 are respectively provided at the bottom of the reaction vessel, and a calcium alginate outlet 8 is provided at the top of the reaction vessel. The sodium alginate inlet 7 and the first calcium hydrate inlet 9 are arranged adjacent to each other and their center lines are at the same height. A second calcium hydrate inlet 10 is provided at the second part 12 tank body, located below the second stirring fin 5. In order to avoid incomplete reaction due to insufficient calcium hydrate during the material reaction process, a certain amount of calcium hydrate can be added to the second calcium hydrate inlet 10 according to the state of the material at the calcium alginate outlet 8. This application sets a second calcium hydrate inlet 10 on the basis of the first calcium hydrate inlet 9, so that the calcium hydrate concentration can be added in a certain gradient, avoiding excessive calcium hydrate added at the first calcium hydrate inlet 9, which would lead to waste of calcium hydrate.
[0049] refer to Figure 2 As shown, a baffle plate 13 is installed inside the reaction vessel. The baffle plate 13 has a triangular cross-section. The first side of the baffle plate 13 can coincide with the third vertical sidewall 123, and the second side of the baffle plate 13 is fixed to the sidewall of the first part 11 of the reaction vessel. In this design, the baffle plate 13 serves to further slow down the rising speed of the material, ensuring the sufficiency of the calcification reaction. At the same time, it can prevent the material from accumulating in certain gaps and eliminate flow dead zones.
[0050] refer to Figure 3 As shown, both the first calcium water inlet 9 and the second calcium water inlet 10 are equipped with rotating spray heads to increase the contact area between the calcium water and the sodium alginate solution, so that the materials are fully mixed and the uniformity of the calcification reaction is further guaranteed.
[0051] refer to Figure 4 As shown, the first stirring fin 4 is a three-bladed stirring fin, in which three blades are evenly distributed, and the blades are at a 45° angle to the stirring shaft.
[0052] refer to Figure 6 As shown, the second stirring blade 5 is a two-bladed downward-pressing stirring blade, in which the blades are at a 45° angle to the stirring shaft. This creates a certain downward pressure on the material during rotation, ensuring full contact between the material and eliminating dead zones in the flow.
[0053] refer to Figure 7 As shown, all four third stirring blades 6 are two-bladed upward-turning stirring blades with the blades staggered at certain intervals. The blades form a 30° angle with the stirring shaft. The second stirring blade 5 has a similar structure to the third stirring blade 6, but the blades of the third stirring blade 6 are symmetrically arranged with the blades of the second stirring blade 5. In this way, when rotating, a certain upward force will be generated on the material, causing the calcium alginate flocculent to be spirally discharged from the reaction vessel.
[0054] Working principle: Sodium alginate solution enters the reaction tank from the sodium alginate inlet 7 at the bottom of the tank. It mixes with high-concentration calcium water from the first calcium water inlet 9 and undergoes a calcification reaction through the first stirring fin 4, precipitating calcium alginate flocculents. The unreacted sodium alginate solution mixes with low-concentration calcium water from the second calcium water inlet 10 and undergoes another chemical reaction through the second stirring fin 5, precipitating calcium alginate flocculents again. Finally, through several upward-folding third stirring fins 6, the material is pushed upward, rapidly lifting the calcium alginate flocculents to the calcium alginate outlet 8.
[0055] Example 4
[0056] In the fourth exemplary embodiment of this application, the difference from the third exemplary embodiment is that the first stirring blade is a four-bladed stirring blade, wherein the four blades are evenly distributed and the blades form a 45° angle with the stirring shaft. (Reference) Figure 5 As shown, compared to the third exemplary embodiment, the fourth exemplary embodiment has an increased number of blades in the first stirring blade, thereby increasing the degree of calcification reaction. For example, the degree of calcification reaction is increased by 30%.
[0057] Comparative Example 1
[0058] Based on the third exemplary embodiment, the difference is that the diameter of the second tank is equal to the diameter of the first tank. Compared to the third exemplary embodiment, the degree of calcification reaction in Comparative Example 3 decreases, which has little impact on the degree of flocculent breakage, but affects the yield of flocculents. For example, if the degree of calcification reaction decreases by 5%, the amount of calcium water added needs to be increased, resulting in waste of calcium water.
[0059] Comparative Example 2
[0060] Based on the third exemplary embodiment, the difference lies in that the number of blades in the third stirring fin is equal to the number of blades in the first stirring fin. Compared to the third exemplary embodiment, the degree of calcification reaction in Comparative Example 2 is not significantly affected. In Comparative Example 2, the reaction is very vigorous during the output of calcium alginate flocs, severely affecting the degree of floc breakage. For example, the degree of floc breakage increases by 10%-15%.
[0061] Comparative Example 3
[0062] Based on the third exemplary embodiment, the difference is that the horizontal length of the second stirring blade is equal to the horizontal length of the third stirring blade. Compared with the third exemplary embodiment, the degree of calcification reaction in Comparative Example 3 decreases by 2%, the degree of material mixing decreases, and the amount of calcium water added needs to be increased, which will result in waste of calcium water.
[0063] Referring to Table 1, the degree of reaction and the degree of calcium alginate flocculent formation were tested.
[0064] Table 1
[0065] Degree of calcification reaction Degree of flocculent breakage Output efficiency Example 3 1 1 1 Example 4 1.3 1 1 Comparative Example 1 0.95 1 1 Comparative Example 2 1 1.1-1.15 1.2 Comparative Example 3 0.98 1 1
[0066] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. An optimized device for the calciumation of sodium alginate, characterized in that, The sodium alginate calcification reaction device includes a reaction tank consisting of a first part and a second part. The diameter of the second part of the tank is larger than the diameter of the first part of the tank, which facilitates thorough mixing of materials. The reaction vessel is equipped with a stirring shaft, and the stirring shaft is provided with a first stirring fin, a second stirring fin, and multiple layers of third stirring fins at intervals from bottom to top. The second stirring fin is located inside the second tank. During operation, the sodium alginate solution and calcium water are mixed and contacted by the first stirring fin. The solution is stirred by the first stirring fin and floats to the second tank. The material is then stirred by the second stirring fin to fully mix the materials. Finally, the third stirring fin stirs the material so that the calcium alginate flocculent material precipitated by the calcification reaction is output from the tank. The reaction vessel is provided with a sodium alginate inlet and a first calcium water inlet at the bottom, and a calcium alginate outlet at the top. The sodium alginate inlet and the first calcium water inlet are arranged adjacent to each other and their center lines are at the same height. The second part of the tank is equipped with a second calcium water inlet; The diameter of the second part of the tank is 1.1 to 1.4 times the diameter of the first part of the tank; The structure of the second tank part, from bottom to top, includes a first inclined sidewall, a second vertical sidewall, and a third inclined sidewall that are connected to each other. The first inclined sidewall is connected to the sidewall of the first tank part, and the third inclined sidewall is connected to the sidewall of the first tank part. The cross-sectional view of the second tank part is "trapezoidal". The first stirring blade, the second stirring blade, and the multi-layer third stirring blade are all detachably mounted on the stirring shaft. The first stirring blade is a four-bladed stirring blade, the second stirring blade is a two-bladed downward-pressing stirring blade, and the multi-layer third stirring blade is a plurality of two-bladed upward-turning stirring blades.
2. The sodium alginate calcification reaction apparatus according to claim 1, characterized in that, The four-blade stirring blade has four blades evenly distributed, and the blades are at an angle of 45°-60° to the stirring shaft.
3. The sodium alginate calcification reaction apparatus according to claim 1, characterized in that, The blades of the two-blade downward-pressing stirring fin are at an angle of 30°-45° to the stirring shaft.
4. The sodium alginate calcification reaction apparatus according to claim 1, characterized in that, The blades of the several two-bladed upward-turning stirring blades are arranged at certain intervals and staggered.
5. The sodium alginate calcification reaction apparatus according to claim 1, characterized in that, The number of blades in the first stirring fin is 1.5 to 2 times the number of blades in the second or third stirring fin.